Research on water environmental capacity and pollution load distribution in the Caoe River Basin
Taking the Caoe River Basin as the research object,the water environmental capacity was calculated,allocated to various control units and refined to the types of pollution sources.The reduction amount of pollutants was proposed in each control unit,in order to improve the water environmental quality of the Caoe River.The results showed:1)from 2016 to 2021,the COD,ammonia nitrogen,and TP of the 3 monitoring sections(Tujiabu,the confluence of Tangcao and the Caoe River Sluice)in the Caoe River basin could meet the Class Ⅲ requirements of"Environmental quality standard for surface water"(GB 3838-2002).2)The inflow of COD,ammonia nitrogen,TN and TP into the river was 16 013.20,959.10,3 658.53 and 416.05 t/a,respectively,mainly from non point sources.3)Based on the constraints of meeting the water quality standards of the Caoe River Basin water monitoring section and the inflow section,the water environmental capacity of COD,ammonia nitrogen,TN and TP was 47 945.18,2 435.81,6 863.19 and 474.98 t/a,respectively.There was still water environmental capacity remained for COD,which did not need to be reduced,ammonia nitrogen,TN,and TP needed to be reduced by 6.91,501.52 and 128.34 t/a,respectively.
Caoe River Basincontrol unitwater environmental capacitypollution load distribution
万方数据
维普
