Process for treating waste water of livestock poultry by mineralizing refuse composite type biological filtering bed

Abstract

A process for treating the sewage generated by domestic fowls and animals by composite biologic filtering bed based on mineralized garbage is composed of the surface layer made of zeolite and mineralized garbage, the main layer made of mineralized garbage, the bottom layer made of lime stone and mineralized garbage, and the bearing layer made of broken stone. It has high degradating power to various organic pollutent.

Description

technical field [0001] The invention discloses a method for treating livestock and poultry wastewater with a compound biological filter bed of mineralized garbage, and relates to a treatment method for livestock and poultry wastewater. Using this method to treat livestock and poultry breeding wastewater such as pigs, cattle, sheep, chickens, ducks, and geese can achieve high organic pollutant removal efficiency and nitrogen and phosphorus removal effects. Background technique [0002] At present, with the advancement of urbanization and the improvement of the living standards of urban residents, the demand for livestock and poultry meat and eggs is increasing rapidly. Especially after the implementation of the vegetable basket project in the 1980s, the livestock and poultry breeding industry took the road of large-scale and intensive development. On the one hand, it increased the output of livestock and poultry products, and at the same time reduc...

AI Technical Summary

Problems solved by technology

There are defects in this process flow: because anaerobic microorganisms, especially methanogens, are sensitive to environmental conditions, the control of anaerobic treatment process conditions is difficult, and the quality of operators is high; due to the conversion of organic nitrogen into ammonia nitrogen under anaerobic conditions, making The concentration of ammonia nitrogen in the effluent has increased; the anaerobic process has almost no phosphorus removal effect

Although the above-mentioned processes can achieve good organic matter removal efficiency and denitrification treatment effect, these processes are complicated, and the capital investment cost is high; the aerobic process unit consumes a lot of energy and high operating costs

Therefore, this will undoubtedly obviously reduce the economic benefits of livestock and poultry breeding enterprises, and it is difficult to be promoted on a large scale.