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天然气采用低温工艺所产生的气田污水,含有大量的有机物,其中以乙二醇为主,造成污水COD很高,直接影响生物处理,致使污水处理不能达到国家规定的排放标准.因此气田污水的处理问题成为环境保护工作中的严重问题,影响天然气工业的建设与发展. 低温开采工艺所产生的气田污水含乙二醇4～15%,还含有硫化物、悬浮物、油;这种污水用汽提方法进行处理,只能除掉水中硫化物,而很难去除乙二醇;经汽提处理后的气田污水再
Natural gas uses low-temperature process gas field sewage generated, containing large amounts of organic matter, of which ethylene glycol-based, resulting in high effluent COD directly affect the biological treatment, resulting in sewage treatment can not meet the state-specified discharge standards. The problem has become a serious problem in environmental protection work, affecting the construction and development of the natural gas industry. The gas field gas generated by the low-temperature mining process contains 4 to 15% of ethylene glycol and also contains sulfide, suspended matter and oil. Mention the method of treatment, can only get rid of sulfide in water, and it is difficult to remove ethylene glycol; gas stripping after treatment of gas field and then