ISSA PGPR技术在农业面源污染水体修复中的应用研究

Research on Application of ISSA PGPR Technology in Remediation of Water Polluted by Agricultural Non-point Sources

为探究ISSA PGPR技术在农业面源污染水体修复中的应用效果,于2020年8月-2021年8月,以常年种植茶园坡面集水河道为研究对象,布设ISSA PGPR修复系统,监测水体主要污染物。结果表明,ISSA PGPR技术对水体中总氮(TN)、总磷(TP)、化学需氧量(COD_(cr))和五日生化需氧量(BOD_(5))平均消减率分别达60.98%、77.41%、42.64%和43.06%;该技术能够在3个月内有效去除污染物,对上游50 m~100 m范围水体有一定修复效果,对下游修复范围更加广泛。ISSA PGPR技术可有效修复长期承接农业坡面来水的沟渠、水塘等污染水体。

In order to explore the application effect of ISSA PGPR in situ ecological restoration technology in the remediation of water bodies polluted by typical agricultural non-point sources.From August 2020 to August 2021,we took the slope catchment channel with perennial tea gardens as the research object.ISSA PGPR remediation system was deployed to locate and monitor the concentration changes of major pollutants in water.The results showed that the average reduction rates of total nitrogen(TN),total phosphorus(TP),chemical oxygen demand(COD_(cr))and 5-day biochemical oxygen demand(BOD_(5))by ISSA PGPR in situ ecological restoration were 60.98%,77.41%,42.64%and 43.06%,respectively.The ISSA PGPR in situ ecological restoration technology can effectively remove pollutants within 3 months and keep the pollutant concentration at a low level.It has a certain restoration effect on the upstream water body ranging from 50 to 100 m,and the effective restoration control scope of the downstream is more extensive.ISSA PGPR in situ ecological restoration technology can effectively restore polluted water bodies such as ditches and ponds that receive a large amount of agricultural slope inflow for a long time.