REVERSE OSMOSIS CONCENTRATE WATER TREATMENT TECHNOLOGY AND REVAMP AFTER STANDARD UPGRADING IN REFINING AND CHEMICAL ENTERPRISES[38]
The Emission Standard of Pollutants for Pe-troleum Refining Industry(GB31570-2015)sets clear control targets for total nitrogen.One petrochemical company carried out standard upgrading before the new standard was issued.On the basis of the original pro-cess,facilities involving denitrification biological filter and sand filter tank were added.The reverse osmosis concentrated water was treated by ozone oxidation,denitrification,air floatation,sand filtration and activat-ed carbon.After such revamp,the operation has been stable;the quality of effluent has been good and the effluent discharge of sewage has reached the standard steadily for five consecutive years.The experience of such revamp after standard upgrading can provide ref-erence for other enterprises.
万方数据
维普
