Revolutionize Farm Wastewater Treatment Solution with Xinjieyuan: Saving Costs and Protecting the Environment
With the rapid development of the aquaculture industry, the problem of farm wastewater treatment has become increasingly prominent. Farm wastewater contains high concentrations of organic matter, ammonia nitrogen, nitrite, nitrate, phosphorus and other pollutants. If it is discharged directly without effective treatment, it will cause serious pollution to the environment.
Different application scenarios of farm wastewater
Therefore, it is particularly important to provide a scientific, efficient and environmentally friendly farm wastewater solution.
1.What is farm wastewater?
Farm wastewater is wastewater generated by farm operations such as pigs, cattle, poultry, fish, etc. This wastewater comes from animal manure, chemicals, feed, and other treatment materials used in the farm process. Farm wastewater contains many nutrients such as phosphates, nitrates, and organic compounds, but also contains many toxic substances such as bacteria, viruses, and heavy metals.
Farm wastewater
Farm wastewater not only affects the water environment, but also affects the soil environment due to the accumulation of toxic substances in the soil. The treatment of farm wastewater is essential to minimize environmental pollution and maintain clean resources.
2.Characteristics of farm wastewater
Farm wastewater is mainly composed of farm urine, some feces and flushing water from the breeding house, and has the characteristics of "three highs": high organic concentration, high suspended solids concentration and high ammonia nitrogen concentration. The characteristics of farm wastewater depend on the type of animals raised and the related breeding activities. But the general characteristics of farm wastewater are that it has an unpleasant odor, turbid color and contains many solid substances, including feces, excess feed and other impurities. The wastewater also contains high concentrations of nutrients, which can cause the "blue algae" phenomenon, thereby reducing the amount of oxygen in the water and causing poisoning of aquatic organisms. These characteristics make the treatment of farm wastewater difficult and require targeted technologies and equipment.
3.Technical specifications for wastewater from livestock farms
The management and treatment of farm wastewater is regulated through technical specifications to ensure that wastewater treatment is carried out in accordance with the process and achieves acceptable wastewater quality. The technical regulations on farm wastewater are issued by the Ministry of Agriculture and Rural Development in accordance with Decree No. 40/2015/ND-CP and Circular No. 25/2016/TT-BNNPTNT.
Therefore, farm wastewater standards include:
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Dissolved oxygen concentration (DO): |
Minimum 3mg/l |
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Ammonia concentration (NH3-N): |
Not more than 20mg/l |
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Nitrate concentration (NO3-N): |
Not more than 50mg/l |
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Nitrite concentration (NO2-N): |
Not more than 3mg/l |
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Total heavy metal concentration: |
Not more than 0.5mg/l |
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Sulfate concentration: |
Not more than 1000mg/l |
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TSS (suspended solids) concentration: |
Not more than 600mg/l |
There are many different methods of treating wastewater to reduce the negative impacts of wastewater on the environment.
Here are some common methods for treating farm wastewater:
Physical treatment: This method uses physical processes to separate pollutants from wastewater. Physical processes include sedimentation, filtration, and separation processes.
Sedimentation pond
MRB Equipment
Chemical treatment: This method uses chemicals to purify, deodorize, and remove pollutants from farm wastewater. Chemicals such as oxidants, reductants, flocculants, and detergents act on pollutants to cause them to agglomerate into larger particles, making them easier to separate. Chemical treatment processes are often used in conjunction with other methods to achieve better results.
Bioremediation: Bioremediation uses microorganisms to break down and remove pollutants from farm wastewater. Microorganisms such as bacteria and nitrate-producing bacteria are able to digest organic matter and nitrogen in wastewater, converting them into non-toxic and non-polluting substances. Bioremediation systems include bioremediation tanks, bioremediation tanks, and bioremediation sludge treatment tanks.
Membrane technology: Membrane technology uses membranes to remove pollutants and separate clean water from farm wastewater. Membranes are able to block particles and solids but allow water and small molecules to pass through. Membrane technology is commonly used in farm wastewater treatment systems, such as membrane equipment treatment systems (MBR) and high-efficiency sludge treatment systems (EBPR).
Advanced technology treatment: using advanced technologies such as aerobic bacteria, microbial application treatment, deodorization and oxidation to treat farm wastewater with more advanced methods and technologies.
4.Schematic diagram of farm wastewater treatment system
To help you better understand the farm wastewater treatment process, below is a diagram describing the pig wastewater treatment system.
Flow Chart of wastewater treatment
Step 1: Mechanical processing
The first step in the wastewater treatment process is to remove suspended solids from the wastewater using physical equipment such as filters, pressure cutters, and solid collection pits. After passing through these equipment, the wastewater will be introduced into the biological tank.
Filters of wastewater system
Step 2: Biological treatment process
In the biological tank, natural materials such as sand, rock or soil are used as habitats for bacteria. Bacteria treat wastewater by decomposing organic matter and converting toxic substances into non-toxic substances.
Step 3: Chemical treatment process
After the wastewater passes through the biological reactor, it is introduced into the chemical treatment tank, where chemicals such as chlorine or ozone are used to remove nutrients and kill bacteria.
Step 4: Heavy Metal Sedimentation Process
Finally, the wastewater will enter the Poly Heavy Metal Sedimentation Tank to remove most of the remaining toxic substances. This tank uses chemicals and a sedimentation process to remove the heavy metals present in the wastewater.
5.Xinjieyuan Farm Wastewater Treatment Technology and Equipment
In its environmental protection treatment process, Xinjieyuan Company systematically adopts diversified means such as physical treatment, chemical treatment, bioremediation, membrane technology and advanced technology treatment to form an efficient and comprehensive treatment system. The system is divided into pretreatment stage, biological treatment stage and deep treatment stage. Each stage is carefully designed and explained in detail to ensure that every step of wastewater treatment achieves the best effect.
Project of xjy wastewater system
Pretreatment stage
1. Grid filtration: By setting up grids, large suspended particles and floating objects in wastewater are intercepted to prevent them from entering the subsequent treatment link. The size of the grid gap is adjusted according to the characteristics of the wastewater to ensure the filtration effect.
2. Sedimentation tank sedimentation: Using gravity, inorganic particles, sand particles, etc. in wastewater are naturally precipitated to remove suspended matter. At the same time, sand discharge facilities are set up to facilitate the cleaning of sediment.
3. Regulating tank regulation: The regulating tank is used to adjust the water quality, water volume and water temperature to provide stable water inlet conditions for subsequent biological treatment. Set up a stirring device to prevent sediment deposition.
Biological treatment stage
1. Anaerobic digestion: Under anaerobic or hypoxic conditions, anaerobic microorganisms are used to decompose macromolecular organic matter in wastewater into small molecular organic matter and inorganic matter. The biogas produced in this process can be used for power generation or heating to achieve resource recycling.
2. Aerobic treatment: Under aerobic conditions, aerobic microorganisms are used to completely oxidize and decompose organic matter in wastewater into carbon dioxide and water. Commonly used technologies include activated sludge method, biofilm method, etc., which have the advantages of good treatment effect and strong stability.
3. Combined process: In view of the complexity of farm wastewater, a combination of "anaerobic + aerobic" processes, such as SBR, A/O, SBBR, etc., are often used to effectively remove pollutants such as organic matter, ammonia nitrogen and phosphorus.
Deep treatment stage
1.Coagulation and sedimentation: Coagulants (such as polyaluminum chloride, polyacrylamide, etc.) are added to the wastewater to condense colloidal particles and suspended matter into larger particles, and then precipitate and separate through sedimentation tanks to remove color, turbidity and some organic matter.
Sedimentation tank
Quartz sand activated carbon filter
2.Filtration: Use porous materials such as quartz sand and activated carbon to intercept suspended matter, colloidal particles and microorganisms in wastewater on the surface or in the pores of the material to further purify the water quality.
3. Disinfection: Use ultraviolet disinfection, chlorine disinfection and other methods to kill pathogenic microorganisms and parasite eggs in wastewater to ensure the safety of effluent.
Main equipment
1. Screen machine: used to intercept large suspended particles in wastewater.
2. Grit chamber: Natural precipitation of inorganic particles and sand particles.
3. Regulating tank: Equipped with a stirring device to adjust water quality, water volume and water temperature.
4. Anaerobic reactor (such as UASB): anaerobic digestion treatment.
5. Aerobic reactor (such as activated sludge tank, biofilm reactor): aerobic treatment.
6. Coagulation sedimentation tank: Add coagulant for coagulation and sedimentation.
7. Filter: Use materials such as quartz sand and activated carbon for filtration.
8. Disinfection equipment: such as ultraviolet disinfector, chlorine dosing device, etc.
6. Xinjieyuan complete process chain
1. Wastewater collection: Collect wastewater from farms to the treatment system.
2. Pretreatment: Remove large suspended solids, inorganic particles and adjust water quality in wastewater through screen filtration, grit chamber sedimentation and regulating tank regulation.
3. Biological treatment: Use anaerobic digestion and aerobic treatment combined process to remove organic matter, ammonia nitrogen and phosphorus and other pollutants in wastewater.
4. Deep treatment: Through coagulation sedimentation, filtration and disinfection processes, further improve the effluent quality to ensure that it meets the discharge standards.
5. Sludge treatment and disposal: Concentrate, dehydrate, stabilize and harmlessly treat the sludge generated during the treatment process to achieve resource utilization or safe disposal.
Application of xjy wastewater equipment
7. Advantages and disadvantages of farm wastewater treatment system
Advantages:
1. Efficiency: The waste water treatment system uses a variety of treatment methods to achieve high efficiency in wastewater treatment and ensure that the wastewater quality meets the standards.
2. Cost savings: Although the initial cost of building a wastewater treatment system can be quite expensive, it will save you money in the long run because there is no need to hire external wastewater treatment services.
3. Water reuse: The wastewater treatment system can reuse treated wastewater for other purposes, such as watering plants or making fertilizers.
Disadvantages:
High upfront investment costs: Building a waste water treatment system requires a large upfront investment cost, especially when using emerging modern technologies.
High technical requirements: Because it is a complex process involving many different technologies, the operation and maintenance of the wastewater treatment system also requires a high degree of engineering.
8.Conclusion
In the context of water shortage and environmental pollution, farm wastewater treatment plays an important role in protecting the environment and ensuring human health and safety. Modern technologies for treating farm wastewater, such as biological treatment systems, chemicals and ultraviolet rays, have been proven to effectively reduce the content of pollutants in wastewater.
It is essential to choose Xinjieyuan (XJY), a unit with a high reputation in the field of professional wastewater treatment system design and construction, to help you save the most cost and time. Most importantly, we ensure that the discharge standards of wastewater meet the environmental standards required by law.
