投放方式对聚氨酯内微生物及其净化效能影响

The impact of fixed way on polyurethane carrier and purification performance

为探讨聚氨酯在生物接触氧化池内不同投放方式对污水净化效能的影响,通过3种投放方式(完全悬浮、完全下沉、一半悬浮一半下沉)的比较,分析不同投放方式导致的微生物群落结构差异与系统净化效果之间的关系.结果表明:聚氨酯在生物接触氧化池内一半悬浮一半下沉状态下的净化效果最佳,COD及NH4+-N的去除率可达90%和94%;在此状态下载体附着的微生物数量最多、多样性最高、活性最强、功能结构最合理.聚氨酯在生物接触氧化池内的投放状态直接影响着生物接触氧化池的净化效果,一半悬浮一半下沉是更有效的投放方式.

The influences of different fixed ways of polyurethane on the purification performance of wastewater treatment in biological contact oxidation were discussed,the polyurethane was put into biological contact oxidation by up-floating,sinking and general up-floating general sinking respectively,the relationship between microbial community structure and purification performance was analyzed.The results showed that polyurethane fixed by general up-floating general sinking could most efficiently remove pollutants,the purification rate of COD and NH＋4-N were 90% and 94%;the attached microbial populations were with the largest number,the highest diversity,the strongest activity and the most reasonable function in this way.Therefore,the purification performance was affected by the fixed way of polyurethane in biological contact oxidation and the general up-floating general sinking was the most effective fixed way.