Method for improving urban atmospheric quality

Abstract

The invention discloses a method for improving urban atmospheric quality, which specifically comprises the following steps of: (1) carrying out septic treatment on excrement and kitchen waste generated by families in an urban storied house area, and filtering to obtain solid waste A (added into a collecting barrel) and dilute liquid A; (2) carrying out precipitation treatment on the dilute liquidA and municipal sewage; (3) filtering to obtain solid waste B (added into the collecting barrel) and dilute liquid B; (4) collecting excrement generated by families in an urban single-storey house area, and jointly adding the excrement, the solid waste A and the solid waste B into an excrement storage pool to obtain solid waste C; (5) after grinding, carrying out a biogas reaction to obtain mixedbiogas; and (6) sequentially carrying out desulfurization, deamination, deodorization and drying treatment to obtain clean biogas, and compressing and storing the clean biogas. The method provided bythe invention purifies the urban atmosphere, reduces the treatment cost of the urban sewage, and provides a good foundation for converting the urban atmosphere condition to a good direction.

Description

Technical field[0001]The present invention relates to the technical field of resource utilization and environmental protection, and more specifically to a method for improving the air quality of a city.Background technique[0002]With the increasing level of urbanization in China, it has brought about a blowout increase in the urban population, which has also brought about a large increase in people's own excrement. These excreta decompose under the action of aerobic bacteria in the underground sewer trench to produce a large amount of CO2Into the urban atmosphere, and under the condition of enclosed anoxic building group septic tanks, these excrement produce a large amount of methane (ie methane) under the action of anaerobic bacteria. CO2Both methane and methane are "greenhouse effect" gases. In addition to the excretion of a large amount of protein waste and residues in food, malodorous H2S gas produces pungent S0 under the action of aerobic bacteria2The decomposition of gas and pr...

AI Technical Summary

Problems solved by technology

[0004] Coupled with the establishment of a new type of city, the excrement discharge in a large number of bungalow areas cannot be effectively solved, and a large amount of kitchen waste is also discharged into urban sewage pipes and ditch, and enters the urban sewage treatment system, thereby increasing the cost of sewage treatment and increasing the degree of urban pollution.