2results about How to "Save aeration" patented technology

The invention relates to a petrochemical biochemical effluent treatment method which comprises the following steps: S1, introducing petrochemical biochemical effluent to be treated into a membrane catalytic ozonation unit for treatment to obtain a first product; s2, the first product water is introduced into a biological activated carbon unit and sequentially flows through an activated carbon catalytic ozonation zone, a biological activated carbon aerobic zone and a biological activated carbon anoxic zone to be treated, and second product water is obtained. The problems of low ozone utilization rate, long treatment process flow, high overall energy consumption and the like in the existing biochemical effluent treatment and recycling process in the petrochemical industry can be solved.

This invention discloses an apparatus and method for coupling ferroammonia oxidation and anaerobic ammonia oxidation of Fenton waste sludge, comprising an influent tank, a five-stage reactor, a secondary sedimentation tank, and a Fenton reactor connected in sequence. This invention enriches the ferroammonia-oxidizing bacteria in the activated sludge by recirculating the sludge (containing ferric iron) produced in the Fenton reactor to the five-stage reactor. The nitrite and nitrate nitrogen produced by ferroammonia oxidation are directly or indirectly utilized by anaerobic ammonia-oxidizing bacteria on the packing material for anaerobic ammonia oxidation. The nitrate nitrogen produced in the aerobic zone can be denitrified using carbon sources and ammonia nitrogen in the influent through short-cut denitrification anaerobic ammonia oxidation. This invention achieves volume reduction and harmless treatment of Fenton waste sludge, achieving high nitrogen and phosphorus removal efficiency in industrial wastewater while removing recalcitrant organic matter.