Study On The Process Of "UASB-A/O" For Treating Biological Pharmaceutical Wastewater

Aiming at high concentration of organic matter, ammonia nitrogen treatment, the characteristics and processing technology of the main existing problems and puts forward UASB+A/O biopharmaceuticals wastewater treatment technology.The result shows that the combined wastewater biological pharmaceutical process is feasible.Main effluent can achieve the《Discharge standerds of water pollutants for pharmaceutical industry》existing enterprise emission limits.1. Biopharmaceutical wastewater with pollution load, pollution, water changes greatly, the characteristics of high concentration organic pollutants. The project adopts UASB+A/O combination treatment technology for the treatment of wastewater biological pharmacy.2. the project for the new regulation ponds, adjust the pool 600m3 capacity in hydraulic retention time for 24h, adjust the water in the pool of COD concentration stable 4000mg/L, pH value can reach into the UASB standards3. Anaerobic digester sludge was used to seed in the UASB reactor. The reactor can start-up in 39days on the condition of 18 kgVSS/m3 seed sludge concentration and using intermittently influent mode. On the dynamics study of startup procedure, value in 39th days. Under normal circumstances, UASB water volume load for 3.5-5kgCOD (m3/d), had 50% average COD removal efficiency, the effluent COD was about 1700-2100 mg/L4. A/O process and thus odds ratio, which had 42.9% average COD removal efficiency and 67% NH4+-N removal efficiency and the effluent COD was about 187 mg/L5. The project cost about 1.35 million yuan in all. including 0.45 million yuan RMB, the investment for civil 0.90 million funding for equipment. Direct operation cost is 3.3 yuan/m3...