1. Hydrolytic acidification
The hydrolytic acidification process is to enter the hydrolytic acidification tank for further treatment after the preliminary treatment of wastewater. The method mainly decomposes COD and BOD in wastewater through microbial metabolism and reduces the content of organic matter. Acidifying bacteria, aerobic bacteria and anaerobic bacteria are commonly used in hydrolytic acidifying pools.
2. Anaerobic digestion
Anaerobic digestion method is to enter the wastewater treated by the hydrolytic acidification tank into the anaerobic digestion tank for treatment, and use the metabolic action of anaerobic bacteria to further remove pollutants. At the same time, biogas is also produced in the process, which can be recycled.
3. Aerobic treatment
The aerobic treatment method is to pass the wastewater treated by the hydrolytic acidification tank and the anaerobic digestion tank into the aerobic tank for treatment. The metabolic action of aerobic bacteria is mainly used to further decompose the pollutants and improve the quality of the effluent.
4. Mixed biology
The mixed biological method is a combination of anaerobic digestion and aerobic biological treatment, which improves the treatment effect and the stability of the wastewater treatment system.