TANGLei,LIUYan-peng,WANG Bao-ming,et al.Influence of Urban Runoff Pollution on River Quality in Riverside Area of Changzhou[J].China Water & Wastewater,2022,38(12):53-60.
Influence of Urban Runoff Pollution on River Quality in Riverside Area of Changzhou
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第12期
Page:
53-60
Column:
Date of publication:
2022-06-17
- Abstract:
- Desheng River is an important emergency drinking water source in Changzhou. There is concentrated urban construction land near the emergency water inlet and pollutants enter the Desheng River along with urban runoff during rainfall, posing a potential threat to urban emergency water supply safety. In 2018 and 2019, water quality of Desheng River and its surrounding urban runoff was monitored at multiple locations and rainfall events. Through comprehensive analysis of the monitoring data, the status of urban runoff pollution around Desheng River and the impact characteristic and regularity of urban runoff to its water quality were studied. The water quality of the Desheng River is generally good throughout the year, but it fluctuates significantly during the flood season and rainfall, and the increase frequency and amplitude of some pollutant concentrations are significant. Some heavy metal indicators such as Cr, Pb, Mn, and Fe have exceeded standards. The indicators of COD, total nitrogen, total phosphorus, Zn, Cr, Pb, Mn, and Fe in the urban runoff around Desheng River are polluted heavily, due to the large regional population density and traffic flow in urban areas, and the existence of many industrial, warehousing, logistics, and dock land. Urban runoff contributes or plays a major role in the increase of COD, SS, turbidity, total phosphorus, Zn, Pb, Mn, Fe, As, benzene and other pollutant concentrations in the urban section of the Desheng River. However, when the rainfall is too large, the impacts of urban runoff pollution will be diluted by the surging water of the river and quickly flow downstream. On this basis, suggestions for controlling urban runoff pollution and optimization of emergency water source operation and management are provided.
Last Update:
2022-06-17