Analysis of pollution status and main pollution sources of Huaisha River in Beijing

doi:10.7523/j.issn.2095-6134.2021.01.010

Abstract

Abstract: Huaisha River is the main source of water in Huairou Reservoir. It is one of the drinking water sources in Beijing. The quality of its water directly affects the health of the citizens in Beijing. The Beijing government requires its quality to meet the second-class water standard. According to the water quality report of Beijing 2017-2018, most of the relevant indicators for the water quality of the Koutou village that is in the downstream area of Huaisha River are relatively good, which meets the requirements of the second type of water. However, the indicators of total phosphorus and total nitrogen often exceed the standard. We tracked the water quality of different sites from Hongjunzhuang village to Tianxianyu village where the water directly flowed into Huairou Reservoir constantly for one year. The survey found that the variation of water quality mainly affected by human activities. The water quality is relatively poor in spring and summer but better during autumn and winter. The main pollutants in the river were total phosphorus and total nitrogen which resulted from substandard domestic sewage discharged by sewage treatment station and phosphorus-containing feed used by fish farms, etc. These factors directly led to water eutrophication of the Huaisha River and caused total phosphorus and nitrogen indexes in downstream water to be inferior to type Ⅳ or even inferior to type Ⅴ, which is far from the requirements of the type Ⅱ water. The current situation poses a serious hidden danger to the safety of drinking water. According to the survey results, this paper proposes some relevant governance programs.

Key words: Huaisha River, water quality assessment, NP pollution, pollution source

CLC Number:

LI Chang, WU Li, HE Yujian. Analysis of pollution status and main pollution sources of Huaisha River in Beijing[J]. Journal of University of Chinese Academy of Sciences, 2021, 38(1): 73-82.

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