Introduction of sewage treatment technology

The sewage treatment process is generally divided into four steps: primary sewage treatment, biological treatment, sludge treatment and water purification treatment.

1. The primary treatment of sewage refers to removing suspended solids, reducing organic matter, reducing alkaline ions, etc. So as to reduce the pollutants contained in the sewage during the flowing process and prepare for the secondary treatment.

2. Biological treatment refers to the decomposition and adsorption of suspended solids and organic matter in sewage by organisms to reduce the concentration of pollutants.

3. Sludge treatment includes sludge sedimentation and sludge reflux.

Sludge sedimentation refers to the removal of suspended solids from sewage, usually by centrifugal sedimentation or sedimentation.

Reflux sludge means that sludge returns to the biological processor for sorting, so as to improve the quality of sludge.

4, water purification treatment refers to the purification treatment of water, so that the sewage discharged into the environment can reach the qualified level as much as possible.

The above is the basic process of sewage treatment technology.

The development of sewage treatment technology not only needs effective sewage treatment and water body protection, but also needs sustainable development, such as multi-functional technology and low energy consumption technology, in order to reduce the impact of pollution.