Preprocessing system

Including grille, sewage lifting pump, aerated sand settling tank and primary settling tank, etc. After treatment, the sewage flows into the aerated biological filter by natural water level difference. Multistage biological aeration filter Different levels of biological aeration filter and different layers of biological carrier contact the water quality of the wastewater, the formation of microbial community composition is not the same, each layer of the growth of microbial flora suitable for the flow into the layer of wastewater water quality.

Post-processing system

The efficient air flotation replaces the traditional secondary sedimentation tank, the sludge is directly discharged into the sludge tank for storage, after digestion, into the belt filter press or spiral centrifuge for treatment, and the mud cake is transported or used as agricultural fertilizer.

Technical key

An aerated biological filter is used instead of an ordinary biological tank. The biological aeration filter adopts forced aeration, the oxygen supply is sufficient, the volume load of the biological aeration tank can reach 2-10kgCOD/m3.d, and the processing capacity per unit volume is about 10 times that of the ordinary biological filter. The addition of different filter materials makes the unit filler have anaerobic, anoxic and aerobic zones at the same time, which is conducive to the formation of the food chain, and can have the functions of nitrogen removal, phosphorus removal and organic matter removal under aeration conditions. Replacing the sedimentation tank in the traditional water treatment process with an air floating tank can greatly improve the removal rate of aging and shed biofilm and suspended matter in the aerated biofilter, reduce the hydraulic residence time, reduce the footprint of structures, and reduce civil construction investment.