The general situation on operations of the treatment process for coking wastewater in Bayuquan Branch of Ansteel was introduced.Then,some problems occurred in terms of the treatment process for coking wastewater were analyzed.Based on analytical results,through upgrading the functions of pretreatment unit,biochemical treatment system and advanced treatment system,together with newly installing the membrane desalination treatment system,the effluent quality of wastewater from coking wastewater system was greatly improved,and the recycling rate of reclaimed water reached over 70％.In the end,the concentrated water quality index for the membrane desalination treatment system reached the discharge standard in Pollutant Discharge Standard for Coking Chemical Industry(GB 16171-2012),all of which were reused for sintering mixture,and all clean water was reused for circulating water system,and thus the goal of zero emissions of coking wastewater was achieved.
关键词
焦化废水/中水回用/膜脱盐处理系统
Key words
coking wastewater/reclaimed water reuse/membrane desalination treatment system
维普
万方数据