Decrement processing system and method for excrement sources of large and medium-sized live pig farms

Abstract

The invention provides a decrement processing system and method for excrement sources of large and medium-sized live pig farms. The decrement processing system comprises hog houses, wastewater collection pipes, excrement collection ditches, water collection tanks and excrement collection tanks, wherein the hog houses are divided into hog lots by virtue of spacing walls, water collection trenches are formed in the ground in the hog houses at intervals along the length directions of the hog houses and have the same lengths with the hog houses, the adjacent water collection trenches are mutually parallel, the water collection trenches are communicated with the wastewater collection pipes, the wastewater collection pipes are connected with the water collection tanks, and the water collection tanks are arranged at one ends of the hog houses; the floors of the hog houses are cement floors, and self-cleaning water permeable bricks are paved on the floors of the hog houses and cover the water collection trenches; and the excrement collection ditches are located on one sides of the hog houses along the length direction, are communicated with the hog lots and are connected with the excrement collection tanks. According to the decrement processing system, the production amount of sewage after excrement in the excrement collection tanks is subjected to solid-liquid separation can be effectively reduced and is reduced by 91.7% at a source, the processing difficulty of the decrement is reduced, and the processing cost is saved.

Description

technical field [0001] The invention relates to a source reduction treatment system and treatment method for large and medium-sized pig farms, belonging to the technical field of wastewater treatment. Background technique [0002] In recent years, the rapid development of my country's pig breeding industry, stable breeding and obvious benefits have effectively promoted the rapid development of the rural economy and become one of the important industries of my country's agriculture and rural economy. However, the rapid development of the pig breeding industry, while increasing economic income and creating social wealth for the vast number of breeding enterprises, inevitably exposed some problems that cannot be ignored and urgently needed to be solved, that is, the pollution caused by pig farm manure. During pig farming, each pig is a source of pollution. According to statistics, the daily excretion coefficients (g / head) of pigs during the 180-day production period are respec...

AI Technical Summary

Problems solved by technology

For another example, Chinese patent document CN 104402175A discloses a biochemical treatment system for pig farm wastewater, which consists of a grid tank, a water collection mixing tank, a solid-liquid separator, a primary sedimentation regulating hydrolysis acidification tank, an IC reactor, and a Level anoxic pool, first carbon lye pool, first level aerobic pool, intermediate sedimentation tank, second level anoxic pool, second carbon lye pool, second level aerobic pool, chemical pool, phosphorus removal sedimentation pool, acidification Pond, aerobic pond, disinfection pond, and packing. The sewage treatment effect of this system is good, and the discharge can finally meet the standard; After liquid separation, the amount of sewage generated is large, the treatment is difficult, and the operating cost is high

[0006] Therefore, in view of the problems that large and medium-sized pig farms produce a large amount of sewage after solid-liquid separation, and the surrounding matching farmland cannot absorb the generated manure, research and develop a method that can effectively reduce the source of manure and reduce the cost of sewage. Manure treatment methods for large and medium-sized pig farms with standard discharge, simple process, convenient operation and maintenance, and low construction and operation costs are imperative

Images