城市河流水质模型参数敏感性和可辨识性:现场处理设施排放生活污水的影响

IF 1.6 Q3 WATER RESOURCES Water Practice and Technology Pub Date : 2023-10-01 DOI:10.2166/wpt.2023.166
Yoshihiko Inagaki, Elias Habineza, Hieu Minh Dang, Rodgers Makwinja, Masahito Komori, Yutaka Sakakibara
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引用次数: 0

摘要

摘要河流水质退化是危害人类健康的一大问题。因此,人们开发了许多水质模型来预测水体的未来状态,并了解当前的水处理系统将如何应对未来的污染负荷和气候驱动因素。使用河流水质模型1号(RWQM1)对一条日本河流进行评价,并使用参数敏感性排序、共线性指数和Fisher信息矩阵衍生准则对模型输出进行参数敏感性和可识别性分析。在RWQM1动力学参数中,与水解、好氧异养菌生长和第一期硝化菌相关的动力学参数影响最大。未经处理的灰水中包含的活性可溶性有机物,以及最先进的现场处理设施的流行率,对模型输出变异性有很大贡献。一项补救分析显示,更新最先进的现场处理设施20%的增量几乎相当于从产生最高污染物负荷的现场处理设施的流出浓度降低70%。这项研究提供了基线数据,有助于实施有关现场处理设施废水管理的政策。
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Model parameter sensitivity and identifiability for urban river water quality: impact of domestic wastewater discharges from on-site treatment facilities
Abstract River water quality degradation is a risk to human health. Hence, many water quality models have been developed to predict the future states of water bodies and understand how the current water treatment systems will respond to future pollution loads and climatic drivers. A Japanese river was evaluated with the River Water Quality Model No.1 (RWQM1), and parameter sensitivity and identifiability analyses were executed on the model output using parameter sensitivity ranking, collinearity index, and Fisher Information Matrix-derived criterion. Among RWQM1 kinetic parameters, those related to hydrolysis, growth of aerobicheterotrophs, and first-stage nitrifiers were the most influential. Reactive soluble organic substances included in untreated gray waters, in addition to a prevalence ratio of the most advanced on-site treatment facility, strongly contributed to the model output variability. A remediation analysis revealed that a renewal to the most advanced on-site treatment facility by 20% increment was almost equivalent to the 70% decrease in the effluent concentration from an on-site treatment facility producing the highest pollutant load in terms of a BOD concentration decrease in the stream. This study provided baseline data assisting in policy implementation regarding the management of effluents from on-site treatment facilities.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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