1, physical and chemical methods: including coagulation, precipitation, filtration, air flotation, adsorption, ion exchange, membrane separation, neutralization, REDOX, extraction, blowing and stripping.
2, biological method: mainly anaerobic method and aerobic method. Anaerobic treatment includes UASB reactor, hydrolysis and acidification, and aerobic treatment includes ordinary activated sludge, biological contact oxidation, SBR, CASS, MBR, and so on.
3. Physicochemical - biological method: At present, most extraction enterprises of traditional Chinese medicine adopt the main processing process of anaerobic - aerobic.