| abstract |
A urine extraction wastewater treatment and nitrogen and phosphorus resource recovery method comprises the following steps: A. pretreating urine extraction wastewater; B. treating urine extraction wastewater organic matters; C. carrying out denitrification treatment on the urine extraction wastewater; D. advanced treatment of urine extraction wastewater; E. sludge treatment: e1, recycling; e2, concentration and dehydration: and the sludge in the air flotation tank, the coagulating sedimentation tank, the ozone oxidation tank and the carbon source recovery tank enters a sludge concentration tank, is concentrated in the sludge concentration tank and then is sent to a dehydrator for dehydration, the dry sludge is transported and treated, and the filter pressing liquid flows back to the regulating tank for further treatment. The method has the advantages of scientific and reasonable design, simple and easy operation, good treatment effect and low operation cost, can deeply remove pollutants such as nitrogen, phosphorus and the like in urine, simultaneously saves the capital construction cost of carbon source adding and operating facilities, and has remarkable social and economic benefits. |