Research on Key Points and Existing Problems of"Zero Discharge"Technology for Coal Chemical Wastewater
In recent years,China has been deeply studying the treatment of wastewater in the coal industry,seeking the"zero discharge"of coal chemical wastewater,comprehensively recycling wastewater,and preventing secondary pollution,including pre-treatment,biological treatment,advanced treatment and recycling.Pretreatment can remove unless dissolved particles,biological treatment is the use of microorganisms to degrade organic matter,deep treatment using adsorption,ion exchange and other methods to treat sewage,so that it meets the sewage discharge standards.Although China has made some progress in this regard,there are still many challenges,such as immature technology,high cost,some wastewater treatment difficulties,and containing trace heavy metals,difficult to degrade organic matter,which cause serious harm to the ecological environment,so it is urgent to innovate,efficient and safe coal chemical wastewater"zero discharge"treatment technology.
coal chemical wastewaterzero emissionswastewater treatmentresource utilizationenvironmental protection
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