Model-Based Evaluation of Reduction Strategies for Micropollutants from Wastewater Treatment Plants in Complex River Networks

被引：111

作者：

Ort, Christoph ^{[1
,2
]}

Hollender, Juliane ^{[1
]}

Schaerer, Michael ^{[3
]}

Siegrist, Hansruedi ^{[1
]}

机构：

[1] Swiss Fed Inst Aquat Sci & Technol, CH-8600 Dubendorf, Switzerland

[2] Univ Queensland, Adv Water Management Ctr, Brisbane, Qld 4072, Australia

[3] Fed Off Environm, Water Div, CH-3003 Bern, Switzerland

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2009年 / 43卷 / 09期

基金：

澳大利亚研究理事会;

关键词：

THE-DRAIN CHEMICALS; AQUATIC ENVIRONMENT; RISK-ASSESSMENT; PHARMACEUTICALS; OZONATION; REMOVAL; FATE;

D O I：

10.1021/es802286v

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A model based on graph theory was developed to efficiently evaluate the impact of the effluent from 742 wastewater treatment plants (WWTPs) on micropollutant loading throughout all river catchments in Switzerland. Model results agree well with measured loads for 12 compounds in river water samples, revealing mean predictive accuracy factors between 0.8 and 3.4. Subsequently, pollutant concentrations were predicted for river sections downstream from 543 WWTPs where hydrological information was available, and compared with recent recommendations for water quality criteria. At base flow conditions, carbamazepine concentrations (parent compound only) are ubiquitously below a water quality criterion of 0.5 mu g L-1. In contrast, the sum of diclofenac and its metabolites is expected to exceed the corresponding water quality criterion of 0.1 mu g L-1 in 224 river sections. If diclofenac cannot be eliminated at the source, the model suggests a directed upgrade of 173 WWTPs to meet the condition that concentrations are never to exceed this water quality criterion.

引用

页码：3214 / 3220

页数：7

共 22 条

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