Design of wastewater treatment engineering in a salt chemical industrial park
A wastewater treatment plant mainly receives industrial wastewater generated by upstream fine chemical and pharmaceutical production enterprises,which has poor biodegradability and high salinity.Pretreat-ment-two stage AO biochemical treatment-high efficient sedimentation-ozone catalytic oxidation-biological filter-V type filter-ultrafiltration-reverse osmosis-concentrated water catalytic ozonation-concentrated water BAF-con-centrated water clarification tank-filter cloth filter-sodium hypochlorite disinfection process was adopted,the treat-ment process,design parameters of main structures and operation effect were introduced.The operation results of the project showed that,the quality of the discharged water after the treatment could stably met the requirement of level A grade 1 in GB 18918-2002 Discharge standard of pollutants for municipal wastewater treatment plant,the limiting values of CODCr and BOD5 were superior to the said standard,which were 40 and 6 mg/L respectively.
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