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Sequence optimization in a sequencing batch reactor for biological nutrient removal from domestic wastewater

机译:顺序批处理反应器中序列优化,用于去除生活污水中的生物营养

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The purpose of this work was to determine optimum sequence retention times for nutrient removal with low-cost using very short aeration time in an SBR treating domestic wastewater. During the study, four different CYCLEs were evaluated, with the highest removal efficiencies recorded for the CYCLE with fill, anaerobic, aerobic 1, anoxic, aerobic2, settle, and decant sequences operated at retention times of 0.5, 2, 2, 1, 0.75, 1, and 0.5 h, respectively. For this CYCLE, the removal efficiencies of chemical oxygen demand (COD), total Kjeldahl nitrogen (TKN), ammonia nitrogen (NH_3-N), total phosphorus (TP), and ortho-phosphate (PO_4-P) were found, on average, to be 91, 78, 85, 87, and 83%, respectively. The optimum sequence retention time was determined via the analysis of variance (ANOVA) using the Matlab software (Mathworks Inc.). The data indicated that the total time of the aerobic sequences was shorter than those of previous studies for similar level of removal efficiencies in all parameters including N and P.
机译:这项工作的目的是确定在SBR处理生活废水中使用非常短的曝气时间以低成本去除营养的最佳序列保留时间。在研究过程中,对四种不同的CYCLE进行了评估,其中填充,厌氧,好氧1,无氧,好氧2,沉降和倾析序列的保留时间分别为0.5、2、2、1、0.75时,CYCLE的去除效率最高。 ,1和0.5小时。对于该循环,平均发现化学需氧量(COD),总凯氏氮(TKN),氨氮(NH_3-N),总磷(TP)和正磷酸盐(PO_4-P)的去除效率,分别为91%,78%,85%,87和83%。使用Matlab软件(Mathworks Inc.)通过方差分析(ANOVA)确定最佳序列保留时间。数据表明,对于包括N和P在内的所有参数,相似的去除效率水平,有氧序列的总时间比以前的研究要短。

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