An EPN livestock and poultry breeding sewage treatment system

Abstract

The invention relates to an EPN (Ethyl P Nitrophenyl Phenylphosphonothioate) livestock breeding sewage disposal system. The EPN livestock breeding sewage disposal system comprises a centrifugal extrusion solid-liquid separating system, a water feeding system, an EPN electrochemical generator, a dosing system, a floatation system, a sludge drying system, an EPN acousto-optical chemical water quality super oxidization system and a post-treatment water quality stabilization system. A method for implementing the system comprises the following steps: removing large suspended solids (SS) through solid-liquid separation, reducing COD (Chemical Oxygen Demand) and SS in a water body, and scraping flocculates in the water body on the surface to remove the SS in the water; removing heavy metals and antibiotics in sewage and reducing the COD, BOD (Biochemical Oxygen Demand) and ammonia nitrogen through an EPN electrochemical generator, and combining impurities into flocculates in a collision way; effectively grabbing and floating small SS in water through the floatation system, and removing the flocculates formed in the EPN electrochemical generator; and filtering sand carbon through post-treatment, and stabilizing the water quality through the EPN acousto-optical chemical water quality super oxidization system in order to discharge the sewage up to a certain standard and recycle the sewage.

Description

technical field [0001] The invention relates to the field of livestock and poultry breeding sewage treatment, in particular to an EPN livestock and poultry breeding sewage treatment system. Background technique [0002] Traditional livestock and poultry breeding sewage treatment mainly uses biochemical treatment methods. Theoretically, biochemical treatment is the most suitable sewage treatment method, but in large-scale livestock and poultry breeding sewage treatment, its treatment effect is not good. The main reasons are as follows: 1. The biochemical reaction cycle is long, resulting in large site requirements, many civil engineering projects, and large investment, and most breeding enterprises cannot meet the conditions for biochemical treatment to meet the discharge standards; 2. Biochemical reactions are greatly affected by external factors, such as temperature and other external factors. 3. The treatment of biochemical reactions is mainly produced in the biochemical r...

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Problems solved by technology

[0002] Traditional livestock and poultry breeding sewage treatment mainly uses biochemical treatment methods. In theory, biochemical treatment methods are the most suitable sewage treatment methods, but in large-scale livestock and poultry breeding sewage treatment, the treatment effect is not good.

The main reasons are as follows: 1. The biochemical reaction cycle is long, which leads to large site requirements, many civil works, and large investment, and most breeding enterprises cannot meet the conditions for biochemical treatment to meet the discharge standards; 2. Biochemical reactions are greatly affected by external factors, such as temperature and other external factors. 3. The treatment of biochemical reactions is mainly produced in the biochemical reaction pool, and its open-air treatment leads to secondary pollution such as infiltration and exhaust gas discharge; 4. The biological bacterial community of biochemical reactions It has high environmental requirements such as water quality, and it is difficult to control changes in microscopic conditions; 5. Antibiotics, as a kind of spectrum antibiotic, are widely used in the prevention and treatment of animal bacterial infection diseases in large-scale livestock and poultry farms worldwide. Due to their high water solubility , are not easy to degrade and accumulate in the environment, and the antibiotics left in livestock and poultry wastewater can produce huge ecotoxicological effects. The water is generally discharged or reused, but the water still contains some ammonia nitrogen, COD, BOD, antibiotics, Escherichia coli and bacterial microorganisms, etc., causing the water to deteriorate during storage in the clear water tank, such as water turning red, bacterial growth, and stench, etc. etc., and the inability to remove antibiotics leads to a large number of enrichment of antibiotics in surface water, resulting in secondary pollution of water bodies

Heavy metals, antibiotics, and oil slicks in livestock and poultry sewage have a strong inhibitory effect on biological bacteria, resulting in poor sewage treatment effects. At the same time, the discharge of heavy metals and antibiotics is also a huge threat to the environment.

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