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《Coal Science and Technology》 2015-01
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Zero discharge technology and solution idea of waste water from new coal chemistry

HE Xu-wen;WANG Chun-rong;School of Chemistry and Environment Engineering,China University of Mining and Technology( Beijing);  
According to water utilization and waste water discharge problems existed in the new coal chemical enterprises,taking the typical coal gasification technique as a case,the paper stated the node occurred from waste water and water quality features. The analysis held that waster water of the coal gasification mainly would come from washing,condensing and distillation. The features of the waste water would be high concentrated organic pollutants,phenols,oil and nitrogen. The biochemistry would be harmful and many inhibitory substance. The biodegradability of the waste water would be poor. The waster water would be a typical high concentration high polluted,harmful,difficult to biodegrade industrial waster water. Based on the circumstances,the paper analyzed the technical features and major functions of conventional treatment techniques of waste water zero discharge in the new coal chemistry,physical chemistry + biochemistry + biological aerated filter + double membrane( ultrafiltration + reverse osmosis) + membrane distillation + high concentrated brine solidification( evaporation pond or mechanic vaporization). Finally,the paper analyzed the main technical problems existed in the above conventional treatment techniques and certain solution ideas were provided.
【CateGory Index】: X784
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