兰溪流域水环境治理措施分析

Analysis of Water Environment Treatment Measures in Lanxi Watershed

"十三五"时期以来,随着国务院印发《水污染防治行动计划》,全国各地水环境整治任务逐年加重,各主要流域支流的整治已经提上日程。2017年,南安市兰溪流域水质较差,为劣Ⅴ类。本文通过分析兰溪流域各污染源的排放强度,针对性地采取生活污染源治理、农业面源治理、畜禽养殖污染整治等措施,提升兰溪流域水质。2020年底,兰溪水质得到一定改善,基本达到Ⅲ类水质标准。

Since the"Thirteenth Five-Year Plan"period,as the State Council issued the"Water Pollution Prevention and Control Action Plan",the task of water environment remediation across the country has been increasing year by year,and the remediation of major river basins and tributaries has been put on the agenda.In 2017,the water quality of the Lanxi River Basin in Nan'an City was poor,inferior to Grade V.This paper analyzes the discharge intensity of various pollution sources in the Lanxi Basin,and takes targeted measures such as domestic pollution source treatment,agricultural non-point source treatment,and livestock and poultry breeding pollution treatment to improve the water quality of the Lanxi Basin.At the end of 2020,the water quality of Lanxi has been improved to a certain extent,basically reaching the ClassⅢwater quality standard.