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中文摘要：
使用人工配水，以A／O／A／O方式运行，考察了溶解氧（DO）对脱氮吸磷的影响，并结合批式试验进一步研究了NO2^--N、NO3^--N对反硝化除磷的影响。试验证明，在SRT=15d，ρ（MLSS）=3200mg·L^-的条件下，ρ（DO）=2．5mg·L^-1时氮和磷的去除效果最佳，TN、TP、COD和TOC的去除率分别为96．26％、99．87％、90．46％和85．57％。
英文摘要：
In this study, experiments were performed by the operating manner of anaerobic/ aerobic/ anoxic/aerobic in a sequencing batch reactor （SBR） which was fed with synthetic wastewater. The target is to study the effect of different dissolved oxygen on synchronous nitrogen and phosphorus removal. It was proved that under the condition which was DO=2.5 mg· L^-1, SRT= 15 d, MLSS=3 200 mg · L ^-1, respectively, the system has the best removal effect of nitrogen and phosphorus, the removal efficiency of TN,TP,COD,TOC was 96.26%, 99.87%, 90.46%, 85.57%, respectively, combined with batch experiments, the effect of nitrate and nitrite on denitrifying phosphorus removal was further clarified.
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