Residential sewage treatment technology

Developed on the basis of traditional urban sewage treatment technology. The conventional secondary biological treatment processes of municipal sewage mainly include: oxidation ditch technology, SBR process (series) BAF process, A2/0 process, biological treatment, constructed wetland process, etc. According to the characteristics of the community and its sewage, the general community domestic sewage treatment facilities should be reasonable and stable in the process flow, adopt integrated facilities, and try to use buried treatment and greening on the ground; If above-ground treatment is used, it is necessary to coordinate with the surrounding environment and minimize secondary pollution such as odor, noise, sludge and so on.

The purpose of deep treatment of domestic sewage

Further remove suspended (SS), organic matter, nitrogen and phosphorus nutrients and soluble inorganic salts in sewage. According to the different reuse of sewage and underground conditions, the treatment process and process are also very different.

The advanced treatment process of sewage usually has the following categories:

(1) coagulation, clarification and filtration method;

(2) Direct filtration method;

(3) Microflocculation filtration method;

(4) contact oxidation method;

(5) biological rapid filter method;

(6) Fluidized bed biological oxidation method;

(7) active internal carbon adsorption method;

(8) Membrane filtration technology (ultrafiltration, nanofiltration, etc.);

(9) Biofilm technology, etc.