【Key words】 high salt coutent； oil field produced water； high efficiency composite microbial culture； biodegradation； discharge with standards；
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Oil field produced water is one of the most important sources of pollution associated with oil production.
采油污水是石油工业中的重点污染源之一。
The deep bed filter is one of the basic units in water treatment engineering, it plays an important role in the produced water treatment of oil field and waste water treatment of refineries.
深层过滤是水处理工程中的基本单元方法，在油田注水处理、石化厂废水治理方面有很重要的地位。
The causes for creation of black floccules in the mixture of produced water and fresh injection water (shallow formation water) at offshore oil field SZ36-1, Bohai, are investigated.
研究了渤海SZ36-1海上油田采油污水和注入水（浅层地下水，清水）混配时产生黑色絮状悬浮物的原因。
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