The effect of aeration rate on nitrification, and the variation rules of DO and pH in aerobic zones,were studied at different operational conditions.It is found that the average nitrification rate and DO concentration were gradually increased,but the increased range was reduced.The nitrification rate could be indirectly controlled by aeration rate,so as to meet the effluent standard.The average DO concentration and the type of pH profiles could be used to determine the aeration if excessive, sufficient or insufficient.

以啤酒废水为研究对象,用SBR法研究了进水中不同有机物与营养物缺乏程度(以BOD/N/P计)对活性污泥膨胀的影响.结果表明,在进水中BOD/N/P为100/4/0.8以上的条件下,污泥的沉降性能良好;当进水中BOD/N/P为100/3/0.6、100/2/0.4及100/0.9/0.3的条件下,均出现丝状菌的过量生长,发生丝状菌污泥膨胀.同时还研究了对这种丝状菌污泥膨胀的控制.

Batch experiments were performed using two-stage Sequencing Batch Reactor(SBR), which consists of two SBR_s, and conventional SBR for treatment of hotel wastewater. The results showed that the COD_ Cr removal rates of both processes were equally matched. The disposal of domestic wastewater could achieve ideal effect through long-term domestication. The fluctuation of outlet using two-stage SBR was less than that using conventional SBR. The first stage was beneficial to the stabilization of outlet. The two-stage SBR process had shorter reaction time and lower energy consumption. It was indicated from the experimental results using two-stage SBR that both the two stages had not absolutely uniform mass of microbe, which was good to treat various organism in wastewater, this improved the efficiency and performance of the process.