生活污水汞的排放及对市政污水中汞的贡献

The Sduty on Contribution of Mercury from Living Community to Municipal Sewage

对经市政管网排入北京某市政污水处理厂的生活污水进行了汞来源的调查研究。根据抽样定律确定了生活小区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。结果表明:该区域生活小区污水中汞浓度与所处区域没有线性关系,且相关性不明显,汞污染呈面源污染的特点,该区域生活小区汞排放总量为376.8 g/d,对所属污水处理厂进水汞的贡献率为39.4%,表明生活小区是市政污水处理厂进水汞的主要来源,因此,从技术、管理、政策三方面对生活污水中汞的减排提出了对策和建议。

Investigated and studied the sources of mercury in the mulnicipal sewage arranging a mulnicipal sewage plant through municipal pipe web. Ascertain the amount and position of the community samping point according the sampling rule. Mercury concentrations are mensured by atomic fluorescent photometer, and accord the tonnage of the sampling point to count the emissions of mercuey of sampling point, the results show that in the drainage area, mercury concentration in the living wastewater was out of linearity with its own area, and the relativity wasn＇t in evidence, the mercury pollution assume the characteristic of Non - point source pollution, mercury emissions of all living communities is 376.8 g/d, contribution rate to its sewage treating plant is 39.4%, which indicate that the living communities are the main source, so advanced the countermeasure and advice to decrease mercury in the living sewage.