共查询到20条相似文献,搜索用时 62 毫秒
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伴随城市雨污分流改造工作的开展,混合制城市排水系统成为主流.混合制城市排水系统污水溢流是城市受纳水体的重要污染源之一.为有效控制混合制城市排水系统污水溢流的频次和水量,最大程度上降低对城市受纳水体的污染,从理论上、排水工程建设及城市排水系统的日常养护管理等方面剖析了混合制城市排水系统污水溢流的原因,给出了各种针对性的控... 相似文献
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《四川环境》2021,40(3)
针对含铀废水接入某城市污水处理厂可能造成的环境影响进行研究,并从国家相关法律法规、污水处理厂的接收标准及含铀废水对污水处理厂设备的可能影响等方面,论证含铀废水纳入城市污水管网的可行性。研究中采用IAEA-SRS-NO. 19报告推荐的小型湖泊模型计算污水处理厂沉淀池中放射性核素沉积到底泥的方法,并计算由于含铀废水对污水处理厂清污人员、巡视人员和参观人员造成的辐射剂量,以及含铀废水排放对沿岸公众所致辐射剂量。经计算,污水处理厂污泥清污工作人员、巡视工作人员、参观人员及周围用水人群所受剂量均远低于0.01mSv/a的公众剂量约束值。从相关法律法规及标准、废水接入标准的符合性、对污水处理厂的净化效率和污水处理设备的影响以及对公众和工作人员的辐射环境影响方面,含铀废水纳入城市污水管网是可行的。 相似文献
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2004年8月10日建设部向各地下发了《建设部关于加强城镇污水处理厂运行监督的意见》,要求加快配套污水管网的建设,充分发挥污水处理设施的效益,保证城镇污水处理厂投入运行后的实际处理负荷,在一年内不低于设计能力的60%,三年内不低于75%。该《意见》共10条,针对目前城镇污水处理出现的普遍性问题,在加强认识、明确职责、加强监管、推行特许经营制度、严格城市排水许可制度、加快配套污水管网建设等方面提出了明确要求建设部要求污水处理厂 处理负荷不得低于设计能力的60%@本刊编辑部 相似文献
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为实现2000年达标排放和总量控制目标,胜利油田的经验和做法是:制定了污水排放总量控制计划、总量控制监测及监督考核办法;认真搞好工业污水治理和综合利用,重点抓好采油污水的回注,使回注率大于90%,并对各行业污水治理制定了措施 相似文献
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John H. Martin 《Journal of the American Water Resources Association》1997,33(4):741-753
ABSTRACT: On May 19, 1993, a jury in the U.S. District Court for the Western District of New York found Southview Farm and Richard H. Popp guilty of violating the Clean Water Act on five occasions. The violations were the result of storm water runoff from a site used for disposal of dairy cattle manure from an unpermitted concentrated animal feeding operation. The presiding District Court judge later dismissed the jury verdict, and subsequently a U.S. Court of Appeals for the Second Circuit reversed the dismissal. The Court of Appeals concluded that the discharges were not exempt as agricultural storm water discharges, and that the manure spreaders involved were point sources. Because the use of animal manures in crop production activities will result, unavoidably, in the discharge of some pollutants to adjacent surface waters, a rational and universally applicable basis is needed to determine when such discharges are point versus nonpoint source. Current statutes and regulations do not delineate clearly such a boundary. To address this lack of specificity, I propose that application rates be based on recommended crop nutrient needs. 相似文献
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Michael Pacione 《Journal of Environmental Planning and Management》1985,28(2):65-69
Government responses to the problems of the inner city currently focus on comprehensive programmes of positive discrimination. The first and most extensive is the G.E.A.R. project in Glasgow. Regular monitoring of the effectiveness of such large‐scale initiatives is essential. If the physical and social aims of such policies are to be realised, assessments must utilise both objective and subjective indicators. 相似文献