长期以来，油田产出废水一般经简单处理后，一部分回注油层，另一部分排入江河沟渠，造成环境污染。对于我国西部沙漠地区，水往往比油贵。如能将油田产出水经处理后，变为工业用水和饮用水，将对油田、环保及沙漠地区带来许多好处。美国加州、洛杉机县Ｐｌａｃｅｒｉｔａ油田 For a long time, after the oilfield effluent is generally treated simply, some of it is injected into the reservoir and the other part is discharged into rivers and ditches, causing environmental pollution. For the desert areas in western China, water is often more expensive than oil. Converting oilfield produced water to industrial and potable water will bring many benefits to the field, the environment and the desert. Placerita, Los Angeles, California, USA