A sewage treatment system for pig farms

Abstract

The invention provides a sewage treatment system applied to a pig farm. The sewage treatment system comprises a manure water separation tank, a primary sedimentation tank, a secondary sedimentation tank, a BAF tank, a reaction tank and a final sedimentation tank which are sequentially connected by a water pump and a connecting pipe, wherein the final sedimentation tank comprises a tank body; an overflowing tank is arranged at the upper part of the tank body; an overflowing pipe connected with a coarse filtration tank is arranged on the upper tank body of the overflowing tank; one end of a sewage purifying device is connected with the coarse filtration tank, and the other end of the sewage purifying device is connected with an oxygenating device; the sewage purifying device comprises an active carbon filter, a sand filter cylinder and an infrared sterilizing cylinder, wherein one end of the active carbon filter and one end of the infrared sterilizing cylinder are connected with each other by a main purifying pipe, then are connected with the coarse filtration tank and are controlled by corresponding valves. The sewage treatment system provided by the invention is simple in structure, good in filtration effect, high in automation degree and capable of being regulated and controlled according to actual needs.

Description

technical field [0001] The invention relates to the field of breeding, in particular to a sewage treatment system for pig farms. Background technique [0002] Wild boars were first domesticated in China, and the history of pig farming in China can be traced back to the early and middle Neolithic times. In the pre-Qin period, according to the oracle bone inscriptions unearthed from the Yin Ruins, there were pigs in the Shang and Zhou dynasties. Then, with the development of production, the requirement to distinguish different pigs gradually came into being. With the development of agricultural production in the Han Dynasty, pig raising was not only for food, but also for the accumulation of fat. This situation has prompted a change in the way pigs are raised. Although house feeding existed before the Han Dynasty, grazing was still the main way of raising pigs until the Han Dynasty. At that time, the relationship between the physiological function and external morphology o...

AI Technical Summary

Problems solved by technology

Most of the sewage and feces from existing pig farms are only treated in rough steps or directly discharged into reservoirs or rivers, which greatly affects the surrounding environment

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