CAJ | 학술논문

采用上流式曝气生物滤池处理城市污水厂二级出水,以满足火电厂原有地下水处理设备的进水要求,研究曝气生物滤池进出水 pH 值的变化,曝气生物滤池对浊度、氨氮和化学需氧量(chemical oxygen demand, COD)的去除效果,确定最佳运行参数及脱氮效率。实验结果表明,该反应器可有效实现有机物、氨氮的同步去除,出水水质稳定。按碳氮物质的量比为1投加碳源后,曝气生物滤池对氨氮的去除率可维持在63%左右,在高浓度氨氮的情况下,氨氮去除率可以达到72%,对 COD 的去除率可以达到60%,出水 pH 稳定在6.5至7.5,浊度小于3 NTU。
채용상류식폭기생물려지처리성시오수엄이급출수,이만족화전엄원유지하수처리설비적진수요구,연구폭기생물려지진출수 pH 치적변화,폭기생물려지대탁도、안담화화학수양량(chemical oxygen demand, COD)적거제효과,학정최가운행삼수급탈담효솔。실험결과표명,해반응기가유효실현유궤물、안담적동보거제,출수수질은정。안탄담물질적량비위1투가탄원후,폭기생물려지대안담적거제솔가유지재63%좌우,재고농도안담적정황하,안담거제솔가이체도72%,대 COD 적거제솔가이체도60%,출수 pH 은정재6.5지7.5,탁도소우3 NTU。
Up-flow biological aerated filter is used to treat secondary effluent from urban sewage plant to feed water to under-ground water treatment equipment of thermal power plant.The paper investigates pH value change of water from inlet to outlet of the biological aerated filter and the effect on removing turbidity,ammonia nitrogen and chemical oxygen demand (COD)to determine the optimal operation parameter and denitrification efficiency.The experimental result shows that the reactor can effectively remove organic substances and ammonia nitrogen and in the meantime stabilize outlet water quality. With the C/N ratio of 1 ,ammonia nitrogen removal efficiency of the biological aerated filter can be as high as 60% and the pH value of outlet water can be stabilized between 6.5 and 7.5 ,turbidity smaller than 3 NTU.