滴滤法处理村镇生活污水研究

Research on the Treatment of Rural Domestic Wastewater with the Method of Trickling Filter

[目的]为高效、低耗地处理村镇生活污水提供参考。[方法]研发了新型滴滤池工艺,考察滴滤池的最佳运行参数以及改善系统脱氮效果的措施。[结果]采用新型滴滤池工艺对COD、NH3-N、TN的去除率分别可达80.63%、81.7%、84.7%。滴滤池的水力负荷宜控制在2.0～4.0m3/(m2.d)。用滴滤法处理村镇生活污水,能显著降低废水COD、NH3-N浓度,加设厌氧段能增强滴滤池的抗冲击能力,增强滴滤塔生物膜的稳定性。[结论]研发的新型滴滤池工艺能显著提高村镇污水的处理效果。

s [Objective]The reference for high-efficiency and low-energy consumption in the treatment of rural domestic wastewater was provided through the experiment.[Method]The advanced technology of new pattern of trickling filter and its operation indicator of trickling filter pool was tested for the improvement of nitrogen removal.[Results]The results showed that the removal rate of COD,NH3-N and TN by means of the new technology was 80.63%,81.7% and 84.7%,respectively,and the hydraulic loading should be controlled at 2.0 to 4.0 m3/（m^2·d）.The concentration of COD and NH3-N in rural domestic wastewater could be significantly reduced and the addition of anaerobic treating part could enhance the resistance of trickling filters and the stability of trickling filter bio-film.[Conclusion]The development of a new trickling filter process could significantly improve the effect on town sewage treatment.