第七章发电厂废水处理.................................................................................................3第一节水质指标及水质标准.................................................................................3一、水体污染.....................................................................................................31．水体污染...............................................................................................32．水质指标...............................................................................................4二、污水排放标准.............................................................................................4三、废水处理技术方法分类.............................................................................41．物理控制法...........................................................................................42．化学控制法...........................................................................................43．物化控制法...........................................................................................54．生化控制法...........................................................................................5第二节火电厂排放的废水和水质特点.................................................................5一、凝汽器的冷却排污废水.............................................................................6二、水力冲灰、冲渣废水.................................................................................6三、烟气脱硫废水.............................................................................................7四、热力设备化学清洗和停炉保护排放的废水.............................................7五、化学水处理废水.........................................................................................7六、含油废水.....................................................................................................8七、生活污水.....................................................................................................8八、其他废水.....................................................................................................8第三节工业废水处理方法概述.............................................................................9一、均化法.........................................................................................................91．均化池类型...........................................................................................92．均化池中的混合.................................................................................10二．中和法.......................................................................................................101．酸碱废水相互中和.............................................................................102．投药中和.............................................................................................11三．混凝...........................................................................................................11四．化学沉淀法...............................................................................................111．氢氧化物沉淀法.................................................................................122．硫化物沉淀法.....................................................................................12五．气浮法...............
