序批式生物膜法处理低浓度城市污水的研究

Research on the Treatment of Low Concentration Municipal Wastewater with Sequence Batch Bio-film Reactor

[目的]解决传统生化处理工艺处理低浓度城市污水时处理效果不理想问题。[方法]采用序批式生物膜法处理低浓度城市污水,对其处理效能进行研究。[结果]序批式生物膜系统对CODCr、NH3-N、浊度、总氮及总磷均有较好的去除效果,平均去除率分别为75.00%、50.28%、62.11%、36.35%及18.76%;随着曝气时间的增加,系统对CODCr、NH3-N及浊度的平均去除率也随之增加,但当曝气时间超过60 min时,各污染物平均去除率均略有下降。[结论]该研究为南方诸多城市污水处理厂进水浓度偏低问题提出了一种可行的解决方法。

[Objective]The problem in the treatment of low concentration municipal wastewater with traditonal biological processes,which effect was not ideal,was solved.[Method]The efficacy of sequence batch bio-film reactor on the treatment of low concentration municipal wastewater was researched.[Result] Sequence batch bio-film reactor could produce good removal efficiency on CODCr,NH3-N,turbidity,total nitrogen and total phosphorous,which average removal rate was 75.00%,50.28,62.11%,36.35% and 18.76%,respectively.With the time-prolonging of its aeration in the system,the average removal rate of CODCr,NH3-N,turbidity was also increased,but when the aeration time exceeded 60 minutes,the average removal rate of each pollutant was slightly decreased.[Conclusion] The feasible measure of the issue-solving of municipal wastewater with low concentration in treatment plant in a lot of cities of southern China was provided.