净化槽反应器处理生活污水及曝气量对处理效果的影响

Johkasou Reactor for the Treatment of Domestic Sewage and the Influence of Different Aeration on the Treatment Effect of Sewage

[目的]为研发适用于农村的污水处理技术提供技术支持。[方法]设计了采用二级厌氧生物滤床和接触氧化处理工艺的一体化污水处理净化槽,并考察不同曝气量对处理效果的影响,确定了最佳曝气量。[结果]当曝气量为0.1～0.3 m3/h时,溶解氧浓度(DO)随曝气量的增加而增高。COD去除率在曝气量最高时达到94%,但随着曝气量的增加,变化幅度逐渐减小。在氧气供给充足的情况下,出水NH3-N在10 mg/L以下,而在曝气量较低的情况下,NH3-N去除率有明显下降。[结论]该净化槽反应器可实现污水的有效处理。当曝气量为0.1～0.3 m3/h时,污水处理效果随曝气量的增加而提高。

[Objective]The research aimed to provide the technical support for developing sewage treatment technology for rural areas.[Method]A johkasou was developed for the treatment of domestic sewage with two-step anaerobic bio-filters and contacting oxidation treatment technology.The influences of different aeration on the treatment effect were investigated and the optimum aeration quantity was confirmed.[Result]When the aeration quantity was 0.1-0.3 m3/h,dissolved oxygen concentration increased with the increasing of aeration quantity.The highest removal efficiency of COD was 94% at the highest aeration quantity,and the change amplitude decreased gradually with the rise of aeration quantity.Under the conditions of sufficient oxygen supply,the effluent NH3-N was less than 10 mg/L.The removal efficiency of NH3-N reduced obviously at lower aeration quantity.[Conclusion]The efficient treatment of domestic sewage can be realized by using this johkasou reactor.When the aeration quantity was 0.1-0.3 m3/h,the treatment efficiency of sewage was enhanced with the rise of aeration quantity.