Breeding sewage treatment method

Abstract

The invention discloses a breeding sewage treatment method which comprises the following steps of: firstly deslagging sewage, then hydrolyzing, acidifying and regulating, then treating the sewage through a UASB (Upflow Anaerobic Sludge Blanket) reactor, and then carrying out corresponding biochemical treatment through a first-stage A / O treatment system, an intermediate sedimentation tank and a second-stage A / O treatment system sequentially; then sequentially carrying out dephosphorization treatment and flocculation treatment on the sewage subjected to the biochemical treatment to remove sediments, wherein supernatant liquid flows into a final sedimentation tank for further sedimentation, and then the supernatant liquid flows into a pH regulating tank so that the pH value of the supernatant liquid is regulated to be 6-9; then carrying out sterilizing treatment so as to achieve emission on standard. The breeding sewage treatment method disclosed by the invention realizes high-efficiency low-consumption synchronous treatment on carbon, nitrogen and phosphorous to remove total nitrogen, ammonia nitrogen and total phosphorus, thereby ensuring the water quality, improving the production efficiency and greatly reducing the production cost; the breeding sewage treatment method disclosed by the invention has the advantages of simple process, stability in system, small occupied area, low operating cost and the like.

Description

Technical field [0001] The present invention involves a method of breeding sewage treatment. Background technique [0002] According to relevant literature, the number of livestock and poultry manure and sewage generated more than 20 billion tons, which is 2.4 times the amount of industrial solid waste generated.The sum of quantity.Pollution pollution of livestock and poultry has become the third largest source of pollution after industrial pollution and life pollution, and has become one of the main reasons for my country's agricultural pollution.The sewage of farms mainly includes urine, some feces and rinse water, which is a high concentration of organic sewage, and the content of suspended materials and ammonia nitrogen is large.After the processed sewage enters the natural water body, it increases the content of solid suspension, organic matter and microbial content in the water, and changes the composition of the physics, chemistry and biological communities of the water bo...

AI Technical Summary

Problems solved by technology

However, due to the high investment and processing costs, it is impossible for all farming enterprises to pray for

Due to the low operating load of the traditional process, it is difficult for the COD content of the effluent to meet the discharge requirements of the new standard; the ability to remove ammonia nitrogen, total nitrogen, and total phosphorus is also low; and the investment cost is high, the operation cost is high, the operation management is difficult, and the burden on the enterprise is heavy.

Images