The wastewater produced by coal chemical industry contains a large number of complex and toxic pollutants,and arbitrary discharge can cause irreversible damage to the environment.Therefore,a zero emission technology application measure in coal chemical wastewater treatment is proposed and its application effect is explored.After analyzing the nodes of wastewater generation in three coal chemical processes,the study determined the types of pollutants contained within them.It then applied zero discharge technology to coal chemical wastewater treatment.The wastewater meets the reuse standards through pre-treatment,biochemical treatment,advanced treat-ment,saline wastewater treatment,sludge and crystallization salt treatment,etc.If it cannot be recovered,it is converted into solid,achieving zero discharge of wastewater.Through case analysis,it can be seen that the application of zero discharge technology can achieve water balance in mining wastewater,significantly reduce salt content,and avoid water quality pollution.
关键词
零排放技术/煤化工污水/膜生物反应器/循环水装置/膜分离技术
Key words
zero emission technology/coal chemical wastewater/membrane bioreactor/circulating water device/membrane separa-tion technology
维普
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