医院用汞对市政污水中汞的贡献

对经市政管网排入高碑店污水处理厂的医疗行业污水进行汞来源的调查研究.根据抽样定律确定了医院采样点的数量和位置，利用原子荧光光度计测定采样点的汞含量，并根据采样点的排水量计算采样点的汞排放量.利用线性回归的方法建立汞排放量与医院床位数和门诊量的线性模型.结果表明:高碑店流域医疗行业汞排放总量为58.27 g/d，对高碑店污水处理厂进水汞的贡献率为5.48%，表明医疗行业对于高碑店污水处理厂进水汞的贡献并不是主要因素，要进行市政污水中汞来源的全面调查，必须对其他行业进行深入研究.对医院行业污水汞的减排提出了对策和建议. 

Research about the Contribution of Medical Industry Sources to Influent Mercury of Municipal Wastewater

The sources of mercury through the municipal pipes into Gaobeidian Sewage Plant of Beijing were investigated. According to the sampling rule, the number and locations of sampling points of hospitals were determined, mercury concentrations at the sampling points measured using atomic fluorescent photometer, and mercury emissions calculated on the basis of wastewater flow of sampling points. Using linear regression method, a linear model was established between the mercury emissions and the numbers of hospital beds and outpatients. The results show that the total mercury emission from the medical industry is 58.27 g/d in Gaobeidian area, and the influent mercury contribution of the medical industry is 5.48%. It accounts that medical industry in Gaobeidian area is not the main factor in the influent contribution of mercury. The measures and advice about the reduction of mercury emission in hospital industry were finally put forward.