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中文摘要：
石化行业中的炼油污水经过常规处理工艺后,各种有害物质含量虽已达到排放标准,但含量仍较高,长期直接排放必然会导致环境问题。石化废水的回收再利用既可以节约用水又可避免对环境的污染,由于石化废水的水质不同,且根据深度处理后的石化废水回用用途的不同,所采用的工艺也差异很大。根据不同水质和不同回用用途,确立了相应深度处理工艺。
英文摘要：
The wastewater in petrochemicals has met the emission standard after regular treatment,but it is still high in amount, which would inevitably lead to environmental pollution in a long term. The recycling of petrochemical wastewater not only saves water but protects the environment. However,due to the different water qualities,the techniques applied are different as well after deep treatment. This paper tries to set corresponding deep treatment techniques according to water quality and its usage.
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