Guide to Shop Custom Water Bladder in WOLIZE
Shandong Wolize Biotechnology Co., Ltd. is at the front of quality in the field of custom water bladder and we have executed a strict quality control system. To prevent any defects, we have established a system of screening checkpoints to ensure that defective parts are not passed to the next process and we ensure that the job performed at each manufacturing step conforms 100% to quality standards.
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At WOLIZE, a number of useful information is clearly displayed. Customers can have a deep understanding of our customization service. All products including custom water bladder can be customized with various styles, specifications, and so on.
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The filtering drum in the recirculating aquaculture system is an important water treatment equipment, and its main function is to remove suspended solids in the water, including feed residues, fish feces, and biological bacterial masses. There are two main types of filtering drums: drum type and crawler type.
Drum filtering drum:
Filtration is performed using a rotating stainless steel drum with a dense 316L stainless steel screen attached to it, which is driven by a motor through gears.
Crawler type filtering drum:
By controlling the mesh size of the filter cloth, suspended particles with a diameter larger than the corresponding specification can be effectively removed from the water. By filtering on one side, with a built-in backwash device, and then by designing multiple sewage tanks and sewage outlets, secondary pollution can be effectively avoided.
After years of practice, rotary drum filtering drum has gradually become the mainstream of factory-scale recirculating aquaculture due to its compact structure, small footprint, good filtration effect, low operating cost and easy maintenance.
The structure and working principle of rotary drum filtering drum
The rotary drum filtering drum uses a rotating drum to filter. The outside of the drum is covered with a dense mesh and driven by a motor. A pump is installed outside the filtering drum. The filtered clean water is pumped away by the pump, while the dirt is left on the mesh and washed away by back washing.
1. The basic structure of the rotary drum filtering drum
The drum filtering drum is mainly composed of a horizontal drum, a filter screen, a driving device, a water inlet system, a water outlet system, a sewage system, a backwash system, and a control cabinet.
1. Roller:
This is the core component of the rotary drum filtering drum. It is generally a horizontally placed cylindrical structure consisting of a metal frame with a supporting mesh and a working mesh woven from stainless steel wire wrapped around the outside. The mesh size is usually between 60-250 meshes. Different mesh specifications can be selected according to actual needs to achieve the corresponding filtering accuracy.
2. Driving device:
It is composed of a motor and gears. The motor drives the drum to rotate through the gears. The general speed is 1-3r/min. Too fast a speed may cause large particles to break into tiny particles and pass through the filter, reducing the filtering effect.
3. Water inlet system:
It includes water inlet pipe and overflow weir water distributor, etc. The water inlet pipe introduces the aquaculture wastewater to be filtered into the filtering drum machine. After the wastewater enters the overflow weir water distributor, it can be evenly distributed on the filter cartridge filter screen rotating in the opposite direction after a short period of steady flow, so as to achieve better filtering effect.
4. Water outlet system:
It is mainly the water outlet pipe. The clean water filtered by the filter is discharged from the filtering drum machine through the water outlet pipe and enters the next water treatment link.
5. Sewage system:
It consists of a sewage collection tank and a sewage discharge pipe. The solid dirt intercepted by the filter screen will be collected in the sewage collection tank during the rotation of the drum, and then discharged from the filtering drum through the sewage discharge pipe.
6. Backwash system:
It consists of a back washing water pump, a back washing pressure nozzle, a liquid level sensor, a back washing pipe, etc. When the filter is clogged to a certain extent, the water level controller senses the water level change, starts the back washing water pump, and high-pressure water rushes to the filter through the nozzle, flushing the dirt attached to the filter into the sewage collection tank, thereby realizing automatic cleaning of the filter and ensuring the filtering effect.
7. Control chassis:
The control box is the brain of the filtering drum machine. The traditional control box can only perform localized control, and the parameter settings are complicated and inconvenient to operate. When the equipment fails, there is no telephone remote alarm system, which increases the risk of breeding. With the rapid development of the Internet of Things and sensor technology, intelligent filtering drum machines have appeared on the market. For example, the intelligent filtering drum machine launched by wolize can not only monitor the operation of the filtering drum machine in real time through a mobile phone, but also detect faults such as filter blockage, filter damage or back washing abnormalities in time through the use of a variety of sensors. After the fault is discovered, the relevant personnel can be informed by telephone alarm, which greatly reduces the failure rate of the filtering drum machine and reduces the risk of breeding.
2. Working principle of rotary drum filtering drum:
The working principle of the filtering drum mainly consists of two parts: filtration and back washing:
1. Filter:
The sewage enters the equipment through the feed port of the filtering drum and passes through the microporous surface of the filter. The commonly used micropore size is usually around 200 meshes, which can effectively intercept suspended solid particles and colloidal particles.
2. Anti-cleaning:
As the filtration time increases, the surface of the microporous filter membrane will gradually be blocked by solid particles and colloidal particles, reducing the filtration efficiency. In order to maintain the normal operation of the filtering drum machine, the microporous filter membrane needs to be cleaned, and the cleaning process is usually carried out by back washing.
Drum filtering drum:
Filtration is performed using a rotating stainless steel drum with a dense 316L stainless steel screen attached to it, which is driven by a motor through gears.
Crawler type filtering drum:
By controlling the mesh size of the filter cloth, suspended particles with a diameter larger than the corresponding specification can be effectively removed from the water. By filtering on one side, with a built-in backwash device, and then by designing multiple sewage tanks and sewage outlets, secondary pollution can be effectively avoided.
After years of practice, rotary drum filtering drum has gradually become the mainstream of factory-scale recirculating aquaculture due to its compact structure, small footprint, good filtration effect, low operating cost and easy maintenance.
The structure and working principle of rotary drum filtering drum
The rotary drum filtering drum uses a rotating drum to filter. The outside of the drum is covered with a dense mesh and driven by a motor. A pump is installed outside the filtering drum. The filtered clean water is pumped away by the pump, while the dirt is left on the mesh and washed away by back washing.
1. The basic structure of the rotary drum filtering drum
The drum filtering drum is mainly composed of a horizontal drum, a filter screen, a driving device, a water inlet system, a water outlet system, a sewage system, a backwash system, and a control cabinet.
1. Roller:
This is the core component of the rotary drum filtering drum. It is generally a horizontally placed cylindrical structure consisting of a metal frame with a supporting mesh and a working mesh woven from stainless steel wire wrapped around the outside. The mesh size is usually between 60-250 meshes. Different mesh specifications can be selected according to actual needs to achieve the corresponding filtering accuracy.
2. Driving device:
It is composed of a motor and gears. The motor drives the drum to rotate through the gears. The general speed is 1-3r/min. Too fast a speed may cause large particles to break into tiny particles and pass through the filter, reducing the filtering effect.
3. Water inlet system:
It includes water inlet pipe and overflow weir water distributor, etc. The water inlet pipe introduces the aquaculture wastewater to be filtered into the filtering drum machine. After the wastewater enters the overflow weir water distributor, it can be evenly distributed on the filter cartridge filter screen rotating in the opposite direction after a short period of steady flow, so as to achieve better filtering effect.
4. Water outlet system:
It is mainly the water outlet pipe. The clean water filtered by the filter is discharged from the filtering drum machine through the water outlet pipe and enters the next water treatment link.
5. Sewage system:
It consists of a sewage collection tank and a sewage discharge pipe. The solid dirt intercepted by the filter screen will be collected in the sewage collection tank during the rotation of the drum, and then discharged from the filtering drum through the sewage discharge pipe.
6. Backwash system:
It consists of a back washing water pump, a back washing pressure nozzle, a liquid level sensor, a back washing pipe, etc. When the filter is clogged to a certain extent, the water level controller senses the water level change, starts the back washing water pump, and high-pressure water rushes to the filter through the nozzle, flushing the dirt attached to the filter into the sewage collection tank, thereby realizing automatic cleaning of the filter and ensuring the filtering effect.
7. Control chassis:
The control box is the brain of the filtering drum machine. The traditional control box can only perform localized control, and the parameter settings are complicated and inconvenient to operate. When the equipment fails, there is no telephone remote alarm system, which increases the risk of breeding. With the rapid development of the Internet of Things and sensor technology, intelligent filtering drum machines have appeared on the market. For example, the intelligent filtering drum machine launched by wolize can not only monitor the operation of the filtering drum machine in real time through a mobile phone, but also detect faults such as filter blockage, filter damage or back washing abnormalities in time through the use of a variety of sensors. After the fault is discovered, the relevant personnel can be informed by telephone alarm, which greatly reduces the failure rate of the filtering drum machine and reduces the risk of breeding.
2. Working principle of rotary drum filtering drum:
The working principle of the filtering drum mainly consists of two parts: filtration and back washing:
1. Filter:
The sewage enters the equipment through the feed port of the filtering drum and passes through the microporous surface of the filter. The commonly used micropore size is usually around 200 meshes, which can effectively intercept suspended solid particles and colloidal particles.
2. Anti-cleaning:
As the filtration time increases, the surface of the microporous filter membrane will gradually be blocked by solid particles and colloidal particles, reducing the filtration efficiency. In order to maintain the normal operation of the filtering drum machine, the microporous filter membrane needs to be cleaned, and the cleaning process is usually carried out by back washing.
Recirculating Water Quality Parameters
Water quality parameters and design standards form the basis for recirculating water treatment system design and operational management. Below are reference diagrams and parameters commonly used by the Engineering Team:
Water Quality ParametersTotal Suspended Solids (TSS)
≤10mg/L
Total Ammonia Nitrogen (TAN)
≤1mg/L
Nitrite (NO₂⁻ - N)
≤0.5mg/L
Nitrate (NO₃⁻ - N)
≤300mg/L
Dissolved Oxygen (DO)
8-10mg/L
pH
7-8.5
Oxidation-Reduction Potential (ORP)
≤400mV
Water Temperature
23-30℃
1. Solid Particle Removal System Design
Total Suspended Solids (TSS) is commonly used as a parameter to measure solid particulate matter in Recirculating Aquaculture System (RAS). It mainly refers to the total amount of solid particles with a particle size greater than 1 micron in a unit of water. In the circulating water system, TSS includes fish feces, residual bait, biological flocs (dead and live bacteria), etc. The size of these suspended particles varies greatly from micrometer to centimeter level. Suspended particulate matter can directly affect the health and growth of fish (especially cold water fish), and also increase the burden on biofilters. Therefore, it is necessary to maintain the concentration of suspended particles in the circulating water within a reasonable range.
In some EU countries' Recirculating Aquaculture System (RAS) systems, the control of suspended particulate matter is relatively strict. For example, for water bodies used for Recirculating Aquaculture System (RAS), the concentration of suspended particulate matter (measured by total suspended solids TSS) is usually expected to be controlled below 15mg/L to maintain good water quality and ecological environment.
The United States also has relevant water quality regulations in the fields of aquaculture and water treatment. In the Recirculating Aquaculture System (RAS) system, the corresponding suspended particulate matter content (converted by turbidity and other related indicators) also has certain limitations. The ideal range for suspended particulate matter concentration is around 8-12 mg/L, which is used to ensure the survival and reproduction of aquatic organisms.
In the actual operation of the factory based Recirculating Aquaculture System (RAS) system in China, it is generally required to control the suspended particulate matter concentration (suspended solids SS) below 10mg/L. For some precious species that require high water quality, such as salmon, it is even required to control it below 5mg/L.
2. Dissolved Contaminant Removal Parameters
Water solubility includes soluble inorganic substances and soluble organic substances. Among them, water-soluble harmful substances are mainly ammonia nitrogen (NH3-N) and nitrite nitrogen (NO2-- N). Ammonia nitrogen can enter the bloodstream through the gills and skin of fish, disrupting their normal tricarboxylic acid cycle, altering their osmotic pressure, and reducing their ability to absorb oxygen from water, thus affecting their normal growth and survival.
The commonly used fixed membrane nitrification biofilter in Recirculating Aquaculture System (RAS) systems is the ammonia nitrogen conversion bacterial community that grows on the surface of a certain biological packing material, and ammonia nitrogen is transferred to the fixed biofilm through diffusion and converted. The main purpose of the biological filter process design is to ensure that the filter has sufficient nitrifying bacteria to remove ammonia nitrogen excreted by fish, maintain the ammonia nitrogen concentration in the aquaculture system within the predetermined range, and ensure the safety and effective growth of fish.
2.1 Ammonia Nitrogen (NH₃-N) Control
Ammonia nitrogen is one of the main pollutants dissolved in water in Recirculating Aquaculture System (RAS) systems. It mainly comes from the excrement and residual feed of farmed organisms. High concentrations of ammonia nitrogen can be toxic to farmed organisms, affecting their growth, immunity, and reproductive ability. In biofilters, the removal of ammonia nitrogen mainly relies on the nitrification of microorganisms such as nitrifying bacteria, which convert ammonia nitrogen into nitrite and nitrate.
When designing a biofilter, sufficient surface area and volume of the filter material should be considered to provide enough space for nitrifying bacteria to grow and reproduce. At the same time, it is necessary to control the ammonia nitrogen load in the influent and avoid excessive ammonia nitrogen concentration from impacting the biological filter. For example, the concentration of ammonia nitrogen in the influent can be reduced by using an automatic feeding machine and adopting a feeding strategy of small amounts and multiple meals. Determine the allowable ammonia nitrogen concentration for the biofilter based on the ammonia nitrogen tolerance and breeding density of the cultured organisms. Generally speaking, for most freshwater aquaculture fish, the total ammonia nitrogen concentration should be controlled below 1mg/L, and non-ionic ammonia should not exceed 0.025mg/L.
2.2 Nitrite (NO₂⁻-N) Control
Nitrite is also a water quality parameter that needs to be closely monitored in the Recirculating Aquaculture System (RAS) system. It is an intermediate product in the process of ammonia nitrogen nitrification and is also toxic to aquaculture organisms. Nitrite can affect the transport of oxygen in the blood of farmed organisms, leading to symptoms of hypoxia such as shortness of breath, floating heads, and even death.
In the design, it is necessary to ensure that the biofilter can effectively further convert nitrite into nitrate. This requires maintaining the activity of denitrifying bacteria in the biofilter and providing them with suitable environmental conditions, such as appropriate dissolved oxygen. Generally, it is required to control the concentration of nitrite below 0.5mg/L.
2.3 Seawater Aquaculture Considerations
The salinity of seawater is relatively high, containing various ions such as sodium ions (Na ⁺), chloride ions (Cl ⁻), magnesium ions (Mg ² ⁺), calcium ions (Ca ² ⁺), etc. Marine aquaculture organisms have evolved complex ion regulation systems during their long-term adaptation to high salt environments. When nitrite enters marine organisms, these organisms can partially alleviate the physiological effects of nitrite by utilizing their own ion regulation system. In Recirculating Aquaculture System (RAS), chloride ions (Cl -) can reduce the toxicity of nitrite (NO2-) to aquaculture organisms through competitive inhibition. Specifically, both chloride ions and nitrite need to enter the fish body through the chloride cells on the gill plates. The presence of chloride ions increases the difficulty of nitrite entering the fish body, thereby reducing its toxicity. In general, when the concentration of chloride ions in water is six times that of nitrite, it can effectively inhibit the toxicity of nitrite to aquaculture organisms. Compared to freshwater aquaculture, seawater aquaculture has less toxic hazards from nitrite, which is related to the higher concentration of chloride ions in seawater. Therefore, in the Recirculating Aquaculture System (RAS) system, by regulating salinity reasonably, the toxicity of nitrite can be effectively reduced, and the health and safety of aquaculture organisms can be protected.
3. Dissolved Oxygen (DO)
In a Recirculating Aquaculture System (RAS) system, dissolved oxygen (DO) is a key water quality parameter. Fish and other aquatic organisms absorb dissolved oxygen from water through gill respiration to maintain their metabolic activity. The dissolved oxygen concentration required for the normal growth of most warm water fish is generally around 5-8mg/L. When the dissolved oxygen concentration is below the critical level, the respiration of aquatic organisms will be inhibited, their growth rate will slow down, their immunity will decrease, and they are prone to infection with diseases. For example, when the dissolved oxygen is below 2mg/L, many fish will experience floating head phenomenon, and prolonged exposure to low dissolved oxygen can lead to fish death.
In Recirculating Aquaculture System (RAS), it is recommended to maintain dissolved oxygen between 8-10 mg/L. Higher dissolved oxygen is beneficial for increasing feeding levels and reducing feed to feed ratios.
4. pH Control
In a Recirculating Aquaculture System (RAS) system, the suitable pH range for fish is usually between 7.0-8.5. For example, most freshwater fish grow well in environments with pH 7.2-7.8. This is because within this pH range, the physiological functions of fish, such as respiration and osmotic pressure regulation, can be carried out relatively normally. Gas exchange occurs through the gills, and the appropriate acidity or alkalinity in water facilitates the normal exchange process of oxygen and carbon dioxide.
For shrimp farming, such as South American white shrimp, the suitable pH range is roughly 7.8-8.6. This is due to the physiological structure and activity characteristics of crustaceans, which make them more adaptable to slightly higher pH environments. Suitable pH is beneficial for the molting growth of shrimp.
However, during the process of Recirculating Aquaculture System (RAS), the pH value will continuously decrease as the aquaculture progresses, and it is necessary to adjust the pH value of the water. Automatic pH adjustment equipment can be used. Automatically adjust the pH value of the water body based on pH sensor data.
Water quality parameters and design standards form the basis for recirculating water treatment system design and operational management. Below are reference diagrams and parameters commonly used by the Engineering Team:
Water Quality ParametersTotal Suspended Solids (TSS)
≤10mg/L
Total Ammonia Nitrogen (TAN)
≤1mg/L
Nitrite (NO₂⁻ - N)
≤0.5mg/L
Nitrate (NO₃⁻ - N)
≤300mg/L
Dissolved Oxygen (DO)
8-10mg/L
pH
7-8.5
Oxidation-Reduction Potential (ORP)
≤400mV
Water Temperature
23-30℃
1. Solid Particle Removal System Design
Total Suspended Solids (TSS) is commonly used as a parameter to measure solid particulate matter in Recirculating Aquaculture System (RAS). It mainly refers to the total amount of solid particles with a particle size greater than 1 micron in a unit of water. In the circulating water system, TSS includes fish feces, residual bait, biological flocs (dead and live bacteria), etc. The size of these suspended particles varies greatly from micrometer to centimeter level. Suspended particulate matter can directly affect the health and growth of fish (especially cold water fish), and also increase the burden on biofilters. Therefore, it is necessary to maintain the concentration of suspended particles in the circulating water within a reasonable range.
In some EU countries' Recirculating Aquaculture System (RAS) systems, the control of suspended particulate matter is relatively strict. For example, for water bodies used for Recirculating Aquaculture System (RAS), the concentration of suspended particulate matter (measured by total suspended solids TSS) is usually expected to be controlled below 15mg/L to maintain good water quality and ecological environment.
The United States also has relevant water quality regulations in the fields of aquaculture and water treatment. In the Recirculating Aquaculture System (RAS) system, the corresponding suspended particulate matter content (converted by turbidity and other related indicators) also has certain limitations. The ideal range for suspended particulate matter concentration is around 8-12 mg/L, which is used to ensure the survival and reproduction of aquatic organisms.
In the actual operation of the factory based Recirculating Aquaculture System (RAS) system in China, it is generally required to control the suspended particulate matter concentration (suspended solids SS) below 10mg/L. For some precious species that require high water quality, such as salmon, it is even required to control it below 5mg/L.
2. Dissolved Contaminant Removal Parameters
Water solubility includes soluble inorganic substances and soluble organic substances. Among them, water-soluble harmful substances are mainly ammonia nitrogen (NH3-N) and nitrite nitrogen (NO2-- N). Ammonia nitrogen can enter the bloodstream through the gills and skin of fish, disrupting their normal tricarboxylic acid cycle, altering their osmotic pressure, and reducing their ability to absorb oxygen from water, thus affecting their normal growth and survival.
The commonly used fixed membrane nitrification biofilter in Recirculating Aquaculture System (RAS) systems is the ammonia nitrogen conversion bacterial community that grows on the surface of a certain biological packing material, and ammonia nitrogen is transferred to the fixed biofilm through diffusion and converted. The main purpose of the biological filter process design is to ensure that the filter has sufficient nitrifying bacteria to remove ammonia nitrogen excreted by fish, maintain the ammonia nitrogen concentration in the aquaculture system within the predetermined range, and ensure the safety and effective growth of fish.
2.1 Ammonia Nitrogen (NH₃-N) Control
Ammonia nitrogen is one of the main pollutants dissolved in water in Recirculating Aquaculture System (RAS) systems. It mainly comes from the excrement and residual feed of farmed organisms. High concentrations of ammonia nitrogen can be toxic to farmed organisms, affecting their growth, immunity, and reproductive ability. In biofilters, the removal of ammonia nitrogen mainly relies on the nitrification of microorganisms such as nitrifying bacteria, which convert ammonia nitrogen into nitrite and nitrate.
When designing a biofilter, sufficient surface area and volume of the filter material should be considered to provide enough space for nitrifying bacteria to grow and reproduce. At the same time, it is necessary to control the ammonia nitrogen load in the influent and avoid excessive ammonia nitrogen concentration from impacting the biological filter. For example, the concentration of ammonia nitrogen in the influent can be reduced by using an automatic feeding machine and adopting a feeding strategy of small amounts and multiple meals. Determine the allowable ammonia nitrogen concentration for the biofilter based on the ammonia nitrogen tolerance and breeding density of the cultured organisms. Generally speaking, for most freshwater aquaculture fish, the total ammonia nitrogen concentration should be controlled below 1mg/L, and non-ionic ammonia should not exceed 0.025mg/L.
2.2 Nitrite (NO₂⁻-N) Control
Nitrite is also a water quality parameter that needs to be closely monitored in the Recirculating Aquaculture System (RAS) system. It is an intermediate product in the process of ammonia nitrogen nitrification and is also toxic to aquaculture organisms. Nitrite can affect the transport of oxygen in the blood of farmed organisms, leading to symptoms of hypoxia such as shortness of breath, floating heads, and even death.
In the design, it is necessary to ensure that the biofilter can effectively further convert nitrite into nitrate. This requires maintaining the activity of denitrifying bacteria in the biofilter and providing them with suitable environmental conditions, such as appropriate dissolved oxygen. Generally, it is required to control the concentration of nitrite below 0.5mg/L.
2.3 Seawater Aquaculture Considerations
The salinity of seawater is relatively high, containing various ions such as sodium ions (Na ⁺), chloride ions (Cl ⁻), magnesium ions (Mg ² ⁺), calcium ions (Ca ² ⁺), etc. Marine aquaculture organisms have evolved complex ion regulation systems during their long-term adaptation to high salt environments. When nitrite enters marine organisms, these organisms can partially alleviate the physiological effects of nitrite by utilizing their own ion regulation system. In Recirculating Aquaculture System (RAS), chloride ions (Cl -) can reduce the toxicity of nitrite (NO2-) to aquaculture organisms through competitive inhibition. Specifically, both chloride ions and nitrite need to enter the fish body through the chloride cells on the gill plates. The presence of chloride ions increases the difficulty of nitrite entering the fish body, thereby reducing its toxicity. In general, when the concentration of chloride ions in water is six times that of nitrite, it can effectively inhibit the toxicity of nitrite to aquaculture organisms. Compared to freshwater aquaculture, seawater aquaculture has less toxic hazards from nitrite, which is related to the higher concentration of chloride ions in seawater. Therefore, in the Recirculating Aquaculture System (RAS) system, by regulating salinity reasonably, the toxicity of nitrite can be effectively reduced, and the health and safety of aquaculture organisms can be protected.
3. Dissolved Oxygen (DO)
In a Recirculating Aquaculture System (RAS) system, dissolved oxygen (DO) is a key water quality parameter. Fish and other aquatic organisms absorb dissolved oxygen from water through gill respiration to maintain their metabolic activity. The dissolved oxygen concentration required for the normal growth of most warm water fish is generally around 5-8mg/L. When the dissolved oxygen concentration is below the critical level, the respiration of aquatic organisms will be inhibited, their growth rate will slow down, their immunity will decrease, and they are prone to infection with diseases. For example, when the dissolved oxygen is below 2mg/L, many fish will experience floating head phenomenon, and prolonged exposure to low dissolved oxygen can lead to fish death.
In Recirculating Aquaculture System (RAS), it is recommended to maintain dissolved oxygen between 8-10 mg/L. Higher dissolved oxygen is beneficial for increasing feeding levels and reducing feed to feed ratios.
4. pH Control
In a Recirculating Aquaculture System (RAS) system, the suitable pH range for fish is usually between 7.0-8.5. For example, most freshwater fish grow well in environments with pH 7.2-7.8. This is because within this pH range, the physiological functions of fish, such as respiration and osmotic pressure regulation, can be carried out relatively normally. Gas exchange occurs through the gills, and the appropriate acidity or alkalinity in water facilitates the normal exchange process of oxygen and carbon dioxide.
For shrimp farming, such as South American white shrimp, the suitable pH range is roughly 7.8-8.6. This is due to the physiological structure and activity characteristics of crustaceans, which make them more adaptable to slightly higher pH environments. Suitable pH is beneficial for the molting growth of shrimp.
However, during the process of Recirculating Aquaculture System (RAS), the pH value will continuously decrease as the aquaculture progresses, and it is necessary to adjust the pH value of the water. Automatic pH adjustment equipment can be used. Automatically adjust the pH value of the water body based on pH sensor data.
Aquaculture, also known as aquaculture, refers to the cultivation of fish or various seafood in artificially opened fish ponds on the shore for consumption. According to the different aquaculture water quality, it can be divided into three categories: freshwater aquaculture, saltwater aquaculture and sea surface aquaculture. Simply put, fish or various seafood are cultivated in artificially opened fish ponds on the shore, and the distribution is most dense in the southwest coast. Since it is aquaculture, the most important thing besides aquatic products is of course water, so Ganzhou Tengyue Canvas Co., Ltd. thinks of a word-water circulation. What is the position of water circulation in aquaculture and fish pond farming? Or what are the benefits of water circulation in aquaculture fish ponds?
One of the factors that has a greater impact on aquaculture products during the breeding process is the water body. It is critical to maintain water quality in aquaculture, so one of the benefits of water circulation is to maintain water quality. Through reasonable planning and design, a system is established to allow water to flow. This process can also remove the sediment of fish pond dirt and reduce bacterial growth. In addition, the nitrification system absorbs and improves the ammonia nitrogen situation in the water, which can also more effectively maintain the aquaculture water quality. Only when the water body is well maintained can it be more beneficial to the survival and growth of aquaculture products. In addition to water quality, the oxygen required for aquaculture can also be solved. The process of water body movement will increase the contact area with air and increase the dissolved oxygen content in the water body, which can also be more conducive to the growth of aquaculture products.
How should a reasonable and appropriate fish pond water cycle be planned? Take the new aquaculture equipment galvanized sheet canvas fish pond as an example. The galvanized sheet canvas fish pond is a new type of artificial aquaculture pool, which is composed of galvanized sheet and fish pond canvas. It has the characteristics of high strength and wear resistance, is not easy to leak and has a long service life. Intensive management is also convenient for feeding. It is also convenient to install a circulating water system in a canvas fish pond, because the installation of a galvanized canvas fish pond is relatively simple, and the choice of installation location is also more flexible. It is also relatively simple to consider the circulating filter pump, aeration pump, water inlet and outlet for water circulation. The galvanized plate opening and the canvas opening are both very simple, and the location is up to you to choose, but you should try to choose a shaded location so that it is not easily polluted, and plan the direction of each pipeline in advance, so that no external pipelines are required later, and it looks more beautiful overall.
One of the factors that has a greater impact on aquaculture products during the breeding process is the water body. It is critical to maintain water quality in aquaculture, so one of the benefits of water circulation is to maintain water quality. Through reasonable planning and design, a system is established to allow water to flow. This process can also remove the sediment of fish pond dirt and reduce bacterial growth. In addition, the nitrification system absorbs and improves the ammonia nitrogen situation in the water, which can also more effectively maintain the aquaculture water quality. Only when the water body is well maintained can it be more beneficial to the survival and growth of aquaculture products. In addition to water quality, the oxygen required for aquaculture can also be solved. The process of water body movement will increase the contact area with air and increase the dissolved oxygen content in the water body, which can also be more conducive to the growth of aquaculture products.
How should a reasonable and appropriate fish pond water cycle be planned? Take the new aquaculture equipment galvanized sheet canvas fish pond as an example. The galvanized sheet canvas fish pond is a new type of artificial aquaculture pool, which is composed of galvanized sheet and fish pond canvas. It has the characteristics of high strength and wear resistance, is not easy to leak and has a long service life. Intensive management is also convenient for feeding. It is also convenient to install a circulating water system in a canvas fish pond, because the installation of a galvanized canvas fish pond is relatively simple, and the choice of installation location is also more flexible. It is also relatively simple to consider the circulating filter pump, aeration pump, water inlet and outlet for water circulation. The galvanized plate opening and the canvas opening are both very simple, and the location is up to you to choose, but you should try to choose a shaded location so that it is not easily polluted, and plan the direction of each pipeline in advance, so that no external pipelines are required later, and it looks more beautiful overall.
I. Purpose
Water storage liquid bags are widely used in many fields, mainly including:
Agricultural irrigation: In arid areas, liquid bags can store rainwater or irrigation water to help crops grow.
Emergency water storage: In natural disasters or water supply interruptions, liquid bags can be used as emergency water sources.
Outdoor activities: Suitable for outdoor activities such as camping and hiking, easy to carry and use.
Industrial use: In some industrial processes, liquid bags can be used to store and transport liquid raw materials.
II. Materials
The materials of water storage liquid bags are usually durable and safe, including:
Polyethylene (PE): has good chemical resistance and UV resistance, suitable for long-term outdoor use.
Polyvinyl chloride (PVC): has low cost, but may release harmful substances under high temperature conditions.
TPU (thermoplastic polyurethane): has excellent elasticity and wear resistance, and is often used in high-end products.
Composite materials: Combine the advantages of multiple materials to improve strength and durability.
3. Design
The design of water storage bags is becoming more and more user-friendly and functional, mainly reflected in:
Portability: lightweight design, easy to carry, some products are foldable, saving space.
Versatility: some liquid bags are equipped with a filtration system, and the stored water can be drunk directly.
Durability: enhanced sealing design and wear-resistant materials to extend service life.
Visualization: transparent or translucent material design, easy to observe the amount of water inside.
4. Market Trends
The water storage bag market is experiencing rapid development, and the main trends include:
Enhanced environmental awareness: Consumers' attention to environmentally friendly materials and sustainable development has prompted manufacturers to adopt recyclable materials.
Intelligence: Some liquid bags have begun to integrate sensors to monitor water levels and water quality in real time.
Personalized needs: According to different usage scenarios, products with various specifications and functions are launched.
International market expansion: With the intensification of global climate change and water shortage problems, the demand for water storage bags in the international market continues to grow.
Conclusion
Water storage bags play an important role in modern life. Their diverse uses, continuously improving materials and designs, and rapid market development make them an effective tool for addressing water resource challenges. With the advancement of technology and changes in consumer demand, water storage bags in the future will be more intelligent, environmentally friendly and humane.
Water storage liquid bags are widely used in many fields, mainly including:
Agricultural irrigation: In arid areas, liquid bags can store rainwater or irrigation water to help crops grow.
Emergency water storage: In natural disasters or water supply interruptions, liquid bags can be used as emergency water sources.
Outdoor activities: Suitable for outdoor activities such as camping and hiking, easy to carry and use.
Industrial use: In some industrial processes, liquid bags can be used to store and transport liquid raw materials.
II. Materials
The materials of water storage liquid bags are usually durable and safe, including:
Polyethylene (PE): has good chemical resistance and UV resistance, suitable for long-term outdoor use.
Polyvinyl chloride (PVC): has low cost, but may release harmful substances under high temperature conditions.
TPU (thermoplastic polyurethane): has excellent elasticity and wear resistance, and is often used in high-end products.
Composite materials: Combine the advantages of multiple materials to improve strength and durability.
3. Design
The design of water storage bags is becoming more and more user-friendly and functional, mainly reflected in:
Portability: lightweight design, easy to carry, some products are foldable, saving space.
Versatility: some liquid bags are equipped with a filtration system, and the stored water can be drunk directly.
Durability: enhanced sealing design and wear-resistant materials to extend service life.
Visualization: transparent or translucent material design, easy to observe the amount of water inside.
4. Market Trends
The water storage bag market is experiencing rapid development, and the main trends include:
Enhanced environmental awareness: Consumers' attention to environmentally friendly materials and sustainable development has prompted manufacturers to adopt recyclable materials.
Intelligence: Some liquid bags have begun to integrate sensors to monitor water levels and water quality in real time.
Personalized needs: According to different usage scenarios, products with various specifications and functions are launched.
International market expansion: With the intensification of global climate change and water shortage problems, the demand for water storage bags in the international market continues to grow.
Conclusion
Water storage bags play an important role in modern life. Their diverse uses, continuously improving materials and designs, and rapid market development make them an effective tool for addressing water resource challenges. With the advancement of technology and changes in consumer demand, water storage bags in the future will be more intelligent, environmentally friendly and humane.
The water bladder is a convenient water storage tool. It is not easy to carry like traditional water tanks, buckets, and reservoirs. Its weight is very light, but its water storage capacity is different from its own weight. huge. At present, water bladders play an important transportation role in agricultural life, and are especially suitable for water transportation in hills and mountainous areas where water is scarce. The water storage tank can be custom-made and is suitable for various types of vehicles. It will not damage the vehicle body due to bad roads during transportation and prolong the life of the vehicle.
The water storage of the water bladder is still determined by its principle. Since the polymer material used in the water bladder can form a complete and continuous coating film after drying, although it is a relatively complete coating film, there are still gaps. Water in nature is in an association state, and dozens of water molecules are connected by hydrogen bonds to form large molecular clusters. It becomes extremely difficult if the molecular group wants to pass through the polymer gap of the water sac.
Features of agricultural water bladder:
1. It adopts polymer mesh material, professional equipment and advanced technology; it also has good sealing and corrosion resistance, and can be used to store some liquids with pungent odor raw materials, and its service life can be 8-10 years.
2. Good temperature stability: no flowing, no foaming, no sliding at high temperature; no brittle performance at low temperature.
3. Good atmospheric stability: the ability to resist aging and corrosion under the long-term comprehensive action of sunlight, heat, oxygen and other chemical erosion media, microbial erosion media and other factors.
4. The principle of electromagnetic wave heating and welding is used in the production process to instantly polarize and melt the plastic molecules, and the weld seam is beautiful and does not crack.
5. Water resistance: under the action of water and after being soaked by water, the performance is basically unchanged, and it is impermeable under the pressure of water.
6. Easy to transport, the water bladder can be transported with general agricultural machinery, and it is more convenient to transport.
7. Small size, the water bladder is very small when it is not storing liquid, and can even be folded so that it will not take up extra space.
8. The reserves are huge, and the reserves of large water bladders can reach more than ten or even dozens of tons of water.
9. Save energy, the water injection method is simple and fast, and will not waste excess electric energy.
Small water bladders play a big role in agricultural life. The PVC water bladders produced by Shandong Wolize also have good sealing and corrosion resistance. They can be used to store some raw materials with pungent liquids and their lifespan can be 8-10 years. Year.
The water storage of the water bladder is still determined by its principle. Since the polymer material used in the water bladder can form a complete and continuous coating film after drying, although it is a relatively complete coating film, there are still gaps. Water in nature is in an association state, and dozens of water molecules are connected by hydrogen bonds to form large molecular clusters. It becomes extremely difficult if the molecular group wants to pass through the polymer gap of the water sac.
Features of agricultural water bladder:
1. It adopts polymer mesh material, professional equipment and advanced technology; it also has good sealing and corrosion resistance, and can be used to store some liquids with pungent odor raw materials, and its service life can be 8-10 years.
2. Good temperature stability: no flowing, no foaming, no sliding at high temperature; no brittle performance at low temperature.
3. Good atmospheric stability: the ability to resist aging and corrosion under the long-term comprehensive action of sunlight, heat, oxygen and other chemical erosion media, microbial erosion media and other factors.
4. The principle of electromagnetic wave heating and welding is used in the production process to instantly polarize and melt the plastic molecules, and the weld seam is beautiful and does not crack.
5. Water resistance: under the action of water and after being soaked by water, the performance is basically unchanged, and it is impermeable under the pressure of water.
6. Easy to transport, the water bladder can be transported with general agricultural machinery, and it is more convenient to transport.
7. Small size, the water bladder is very small when it is not storing liquid, and can even be folded so that it will not take up extra space.
8. The reserves are huge, and the reserves of large water bladders can reach more than ten or even dozens of tons of water.
9. Save energy, the water injection method is simple and fast, and will not waste excess electric energy.
Small water bladders play a big role in agricultural life. The PVC water bladders produced by Shandong Wolize also have good sealing and corrosion resistance. They can be used to store some raw materials with pungent liquids and their lifespan can be 8-10 years. Year.
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