MA Yu,YANG Chao,CHEN Ling.Preliminary Study on the Potential Ecological Risk of Residual Chlorine in Surface Water and Its Monitoring Necessity[J].China Water & Wastewater,2021,37(14):8-12.
地表水中余氯的潜在生态风险及监测必要性初探
- Title:
- Preliminary Study on the Potential Ecological Risk of Residual Chlorine in Surface Water and Its Monitoring Necessity
- Keywords:
- surface water; residual chlorine; ecological risk; monitoring
- 摘要:
- 在新型冠状病毒肺炎疫情期间,大量的含氯消毒剂被广泛使用,过量的余氯主要通过尾水排放、地面冲刷和地表径流途径进入地表水体。在低浓度情况下,余氯就可影响水生态系统的稳定,给水源地水质带来潜在风险。通过国内外地表水水质标准和相关文献研究的比较,认为余氯对水体生态环境具有重要的指示作用;余氯的监测方法比较成熟,满足常规水质监测要求。因此,建议我国饮用水水源地增设余氯监测指标,保障水源地水生态系统稳定和水质安全。
- Abstract:
- During the outbreak of coronavirus pneumonia, chlorinated disinfectants have been usually overused, leading to a massive discharge of residual chlorine into surface water through the wastewater treatment plant effluent, ground wash-out and surface runoff. Residual chlorine can affect the stability of water ecosystem and bring potential risk to water quality of the drinking water resources even at low concentration level. According to the comparison of surface water quality standards and literature researches between domestic and abroad reports, it is considered that residual chlorine has a significant indicator effect on the water ecological environment. So far, monitoring methods of residual chlorine are relatively mature, which could reach the requirements of the conventional water quality monitoring. Thus, monitoring of residual chlorine in drinking water sources is highly recommended to ensure the stability of water ecosystem and the safety of water quality in the future.
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