Livestock and poultry raising sewage disposal process and disposal system thereof

Abstract

The invention relates to a technology for treating sewage of livestock-poultry cultivation and a treatment system thereof. The technology for treating sewage of livestock-poultry cultivation is characterized by the following steps included: 1) pretreatment of sewage is conducted; 2) the sewage after passing through an acidification adjustment basin stays in a red mud plastic anaerobic ferment device for 12-15 days for carrying out anaerobic ferment, the near medium temperature ferment process is utilized for removing the organic matters in the sewage, and the produced marsh gas is recycled; 3) the outlet water biogas liquid after anaerobic ferment enters a multi-level bionic oxidation channel, the residence time of the sewage in the multi-level bionic oxidation channel is 3-6 days, the organic matters are degraded, and nitrogen and phosphor are removed; 4) the outlet water after being treated by the multi-level bionic oxidation channel enters a multi-level artificial geological fast inleak system and goes through an infiltration medium from above to below by means of natural upright flow, and the outlet water is discharged in accord with standard. The technology and system is characterized by low cost, low energy consumption and high treatment efficiency.

Description

technical field [0001] The invention relates to a livestock and poultry breeding sewage treatment process and a treatment system thereof. technical background [0002] With the continuous progress of social economy and science and technology, the livestock and poultry breeding industry is developing rapidly in the direction of industrialization and scale. However, while bringing greater economic benefits to society, its harm to the environment cannot be ignored. The pollutants discharged by the livestock and poultry breeding industry have the characteristics of high concentration and large discharge volume. The waste discharged by it has high concentration of organic matter, high suspended solids, high content of ammonia nitrogen and phosphorus, and all indicators have exceeded the national discharge standard by several times or even Dozens of times, it has become a larger source of pollution than industrial wastewater and domestic sewage, and is an important source of wate...

AI Technical Summary

Problems solved by technology

The chemical precipitation method can quickly remove heavy metal ions in sewage, but there are problems such as high operating costs, high concentration of heavy metal ions in the effluent, and secondary pollution of sediments.

Ion exchange method and activated carbon adsorption method have the advantages of good effluent quality, but when the treated sewage contains other cations, the selectivity to heavy metals is poor, and there are also disadvantages of high operating and material costs

At present, there is no technology specially applied to the treatment of heavy metals in livestock and poultry sewage.

[0008] Due to my country's relatively backward livestock and poultry sewage treatment technology, insufficient funds, and seriously lagging treatment facilities, it is obviously not in line with my country's national conditions to directly adopt the industrial standard model

Images