聚乙烯醇载体在序批式高校生活污水处理中的应用

Application of PVA carrier in SBR treatment of domestic sewage at university campus

聚乙烯醇(PVA,polyvinyl alcohol)凝胶载体结合传统序批式活性污泥法(SBR,sequencing batch reactor)对高校生活污水进行处理并确定最佳工艺条件.采用单因素实验法研究了污泥沉降比、曝气时间、反应温度、pH变化对化学需氧量(COD,chemical oxygeh demand)以及氨氮去除率的影响,确定最优的控制条件.结果表明,在最佳工艺条件下,处理效果稳定,COD的去除率在80%左右,氨氮的去除率在79%左右,出水COD达到了GB18918—2002《生活污水排放标准》的一级标准的B标准;出水氨氮达到了一级标准的A标准.

By combined the PVA gel carrier with SBR,the domestic sewage is treated and the best process conditions are determined.The effects of sludge settling ratio,aeration time,reaction temperature and pH change on the removal rate of COD and NH_3-N are studied and the optimal control conditions are determined.The results show that in the best process conditions,the treatment effect is stable,the COD removal rate is about 80% and the NH_3-N removal rate is about 79%.The effluent COD reaches the first-level standard B of Domestic Sewage Discharge Standard（GB18918—2002）;the effluent NH_3-N reaches A standard of the first-level standard.