This technique combines fixed film bioreactor, compressed bio-contact oxidation, anaerobic denitrification, aerobic hydrolysis, sludge digestion all together. The economical characters of this technique are: higher oxygen utilization efficiency, multi-functions formation, higher biomass and higher removal load.

This device could be used in categories organism contained wastewater treatment, including: sewage, fermentation industry wastewater, chemical fiber industry wastewater, coking industry wastewater, petroleum refining waster-water, etc.. The cost of this device is 0.8~1.3 yuan/t water. And the investment of this device is 800~1500 yuan/(t water/ day)