Research on the reuse treatment process of high salt chemical wastewater
This paper focused on the water quality characteristics of high salinity chemical wastewater and recycled raw water,analyzed the key and difficult pollutants that need to be removed between the two,and selected suitable process technology routes for the two water treatment systems.The sewage treatment station process adopts the technology of"desulfurization and cyanide removal+air flotation+hydrolysis acidification+two-stage A/O+built-in MBR+ozone oxidation",and the system effluent meets the"Irrigation Water Quality Standards for Farmland"(GB 5084-2021);The process of the reclaimed water reuse system adopts the technology of"chemical softening sedimentation+V-shaped filter+DTLRO reverse osmosis",and the effluent water quality meets the water quality standards for open loop cooling water in Table 1 of the"Industrial Water Quality for Urban Wastewater Recycling and Utilization"GB/T 19923-2005;The project can provide process route design references for the treatment and reuse of high salt chemical wastewater of the same type.
high salt chemical wastewaterCOD and ammonia nitrogen contentsalt content and hardness ionsintermediate-water reuse
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