Energy output type sewage treatment process

Abstract

The invention provides an energy output type sewage treatment process, and belongs to the technical field of sewage treatment. The energy output type sewage treatment process adopts a composite biological floating bed, a subsequent sewage treatment device, a precipitation tank, a dry type anaerobic fermentation device, an aerobic biomass heat coupling drying device, a baking device, a molding device and a combustion gasification device. The process comprises the following steps: firstly, adsorbing a large amount of nitrogen and phosphorus nutrient elements and organic matters through the composite biological floating bed; and then carrying out secondary treatment through the subsequent sewage treatment process. Clear water discharged from the precipitation tank has good water quality and meets the comprehensive class A discharging standard of national sewage. The energy output type sewage treatment process has the characteristics of good sewage treatment effect and realization of zero emission of carbon dioxide and conversion from pollutants into energy.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to an energy output type sewage treatment process. Background technique [0002] With the rapid development of economy and society, the consumption of water resources has increased significantly, and a large amount of industrial and domestic sewage has been generated at the same time. Reasonable treatment of it has become the key to the relationship between environmental quality and people's health. The hazards of sewage are mainly due to the high content of organic pollutants (commonly measured by chemical oxygen demand), nutrients such as nitrogen and phosphorus, or pollutants such as heavy metals. The main purpose of the sewage treatment process is to effectively remove the above pollutants. The activated sludge process is the most typical sewage treatment process, invented by Clark and Gage in 1912 in the United Kingdom, which mainly uses the biocatalysis of aerobic mi...

AI Technical Summary

Problems solved by technology

There are problems such as high cost and technical bottlenecks in its subsequent transshipment, processing and disposal.

[0005] In recent years, ecological sewage treatment has been widely concerned, and the application of artificial wetland and other methods is more common. This type of method can effectively reduce the cost of aeration, but the main problem of this type of method is that the treatment efficiency is low, and the growth of plants after wetland treatment secondary pollution problem

Images