彩云湖水库污染负荷解析及环境容量研究

以彩云湖水库为例,详细调研了彩云湖水库周边污染源,分析了彩云湖各污染源CODCr,NH3-N,TN及TP污染负荷,明确了彩云湖需要重点控制的污染源,即补水设施、生活垃圾及城市地表径流污染。同时,通过选择湖库环境容量计算模型,计算了彩云湖水库水质控制目标下CODCr,NH3-N,TN及TP的环境容量分别为1 894.50,94.73,25.67,3.88 t/a,并与彩云湖水库污染负荷输入总量进行对比,得出彩云湖水库主要控制的对象为TN和TP,以及需要达到水质控制目标TN和TP分别需要削减84.34,9.15 t/a,以此为后期水环境综合整治污染物削减目标及方案制定提供科学依据。

Taking Caiyunhu Reservoir as an example,the pollution sources around the reservoir were investigated in detail. The pollution loads of CODCr,NH3-N,TN and TP from various pollution sources in Caiyun Lake were analyzed. The pollution sources that need to be controlled in Caiyun Lake are identified,including water supply facilities,domestic waste and urban surface runoff pollution. The pollution sources that need to be controlled mainly in Caiyun Lake included water supply facilities,domestic waste and urban surface runoff pollution. At the same time,the environmental capacity of CODCr,NH3-N,TN and TP under the water quality control target of Caiyun Lake Reservoir was calculated by selecting the calculation model of lake and reservoir environmental capacity,which was 1 894.50,94.73,25.67 and 3.88 t/a,respectively. Compared with the total pollution load input of Caiyunhu Reservoir,it is concluded that the main control objects of Caiyunhu Reservoir are TN and TP,and that TN and TP need to be reduced by 84.34 t/a and 9.15 t/a respectively to achieve the water quality control objectives,so as to provide a scientific basis for the formulation of pollutant reduction targets and schemes for comprehensive water environment improvement in the later period.