Effect of average flow and capacity utilization on effluent water quality from US municipal wastewater treatment facilities.
Effect of average flow and capacity utilization on effluent water quality from US municipal wastewater treatment facilities.
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平均流量和容量利用率对美国城市污水处理设施出水水质的影响。
DOI：
10.1016/j.watres.2011.06.002
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发表时间：
2011
期刊：
影响因子：
12.8
通讯作者：
B. Rajagopalan
中科院分区：
文献类型：
--
作者：
S. Weirich;J. Silverstein;B. Rajagopalan
人们对废水收集和处理系统的权力下放越来越感兴趣。然而，还没有对小型处理设施与大型工厂相比的性能进行系统研究。对210个运行污水处理设施4年的排放月报（DMR）数据进行了统计分析，以确定平均流量和容量利用率对出水生化需氧量（BOD）、总悬浮物（TSS）、氨氮和粪大肠菌群相对于允许值的影响。使用广义线性模型（GLM）量化关系。小型设施（40 m3/d）的BOD、TSS和氨的违规率是最大设施（40万m3/d）的10倍以上。对于平均流量小于40，000 m3/d的设施，增加容量利用率与BOD和TSS的出水水平增加相关。较大的设施往往在接近其设计能力的流量下运行，同时保持处理，这表明效率更高。
There is increasing interest in decentralization of wastewater collection and treatment systems. However, there have been no systematic studies of the performance of small treatment facilities compared with larger plants. A statistical analysis of 4 years of discharge monthly report (DMR) data from 210 operating wastewater treatment facilities was conducted to determine the effect of average flow rate and capacity utilization on effluent biochemical oxygen demand (BOD), total suspended solids (TSS), ammonia, and fecal coliforms relative to permitted values. Relationships were quantified using generalized linear models (GLMs). Small facilities (40 m3/d) had violation rates greater than 10 times that of the largest facilities (400,000 m3/d) for BOD, TSS, and ammonia. For facilities with average flows less than 40,000 m3/d, increasing capacity utilization was correlated with increased effluent levels of BOD and TSS. Larger facilities tended to operate at flows closer to their design capacity while maintaining treatment suggesting greater efficiency.