硅藻精土强化SBR工艺处理城市污水试验研究

摘要

In order to improve the effect of urban sewage treatment, refined diatomite was added into SBR. Under the same processing condition, the quality of the effluent water from reactors in blank group and strengthened group were compared and analyzed. The results showed that, compared with traditional SBR, SBR added with refined diatomite had a better performance on SS, CODCr and NH3-N removal, and the average removal rates improved 6.4%, 12.2%, 46% and 22.9% respectively; besides, the sedimentation performance of activated sludge was also improved. Except TP, all indexes of the effluent water from the SBR added with refined diatomite met the specification for grade 1 level A in GB 18918-2002 Urban Sewage Treatment Plant Emission Standard.%通过向SBR反应器中投加硅藻精土,以强化对城市污水的处理效果.在相同处理条件下,对空白组和强化组反应器的出水水质进行对比分析,结果表明,与空白SBR法相比,投加硅藻精土的SBR对污水的SS、CODcr、TP、NH3-N去除率均有所提高,其平均去除率分别提高了6.4％、12.2％、46％、22.9％,对活性污泥沉降性能也有所提高.投加硅藻精土的SBR出水水质指标除TP外均能达到GB 18918-2002《城镇污水处理厂排放标准》一级A标准的要求.