3results 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.

The invention discloses a device and a method for coupling Fenton residual iron sludge with iron ammoxidation and anaerobic ammoxidation. The device comprises a water inlet tank, a five-section reactor, a secondary sedimentation tank and a Fenton reactor which are connected in sequence. According to the method, iron sludge (containing ferric iron) generated by a Fenton reactor flows back to a five-section reactor to realize enrichment of iron ammonium oxidation flora in activated sludge, nitrite and nitrate nitrogen generated by iron ammonium oxidation are directly or indirectly utilized by anaerobic ammonium oxidation bacteria on filler, and anaerobic ammonium oxidation reaction is performed; nitrate nitrogen generated in the aerobic zone can be subjected to short-cut denitrification anaerobic ammonia oxidation reaction by utilizing a carbon source and ammonia nitrogen in inlet water for denitrification. According to the method, reduction and innocent treatment of the Fenton iron sludge are realized, and refractory organic matters are removed while high nitrogen and phosphorus removal efficiency of the industrial wastewater is realized.

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.