结合某焦化废水深度处理与回用工程项目,考察了电渗析处理焦化废水反渗透浓水的状况和不同工艺参数对膜性能的影响,明确电渗析处理焦化废水反渗透浓水的脱盐率和能耗。结果表明,焦化废水反渗透浓水污染物对电渗析膜污染较重,可用1%稀盐...结合某焦化废水深度处理与回用工程项目,考察了电渗析处理焦化废水反渗透浓水的状况和不同工艺参数对膜性能的影响,明确电渗析处理焦化废水反渗透浓水的脱盐率和能耗。结果表明,焦化废水反渗透浓水污染物对电渗析膜污染较重,可用1%稀盐酸洗涤恢复膜性能。2台电渗析膜堆串联组合处理焦化废水反渗透浓水,脱盐率和吨盐能耗随操作电压的增大而增大。固定操作电压为250 V,淡化液流量为9 m3/h,在此条件下膜堆脱盐率为51%,吨盐能耗为625 k W·h。展开更多
The treatment of typical north China water by dissolved air flotation(DAF)and sedimentation process was examined.A pilot plant with a water treatment capacity of 120 m^3/d constructed in the Jieyuan Water Treatment Pl...The treatment of typical north China water by dissolved air flotation(DAF)and sedimentation process was examined.A pilot plant with a water treatment capacity of 120 m^3/d constructed in the Jieyuan Water Treatment Plant(JWTP) of Tianjin,China,was utilized for the comparison of the two processes.The results show that during the pilot test,DAF process can remove particles and organic mater more efficiently than sedimentation process.The removal rate for turbidity by DAF process is 5.5% higher than that by sedimentation in normal turbidity period,and 40% higher in low turbidity period,it is 5%～10% higher for removals of algae,total organic carbon(TOC),trihalomethane formation potential(THMFP)and bacteria in all periods.The removal rates for turbidity,TOC,THMFP,algae and bacteria by DAF process can reach 95%,30%, 20%,94% and 97% respectively.From the results of the pilot test,it can be concluded that DAF is a feasible clarification process,especially for source water with low turbidity and high algal blooming.展开更多
文摘结合某焦化废水深度处理与回用工程项目,考察了电渗析处理焦化废水反渗透浓水的状况和不同工艺参数对膜性能的影响,明确电渗析处理焦化废水反渗透浓水的脱盐率和能耗。结果表明,焦化废水反渗透浓水污染物对电渗析膜污染较重,可用1%稀盐酸洗涤恢复膜性能。2台电渗析膜堆串联组合处理焦化废水反渗透浓水,脱盐率和吨盐能耗随操作电压的增大而增大。固定操作电压为250 V,淡化液流量为9 m3/h,在此条件下膜堆脱盐率为51%,吨盐能耗为625 k W·h。
基金Supported by the National Hi-tech Research and Development Program (863 Program) of China (No.2002AA601140)
文摘The treatment of typical north China water by dissolved air flotation(DAF)and sedimentation process was examined.A pilot plant with a water treatment capacity of 120 m^3/d constructed in the Jieyuan Water Treatment Plant(JWTP) of Tianjin,China,was utilized for the comparison of the two processes.The results show that during the pilot test,DAF process can remove particles and organic mater more efficiently than sedimentation process.The removal rate for turbidity by DAF process is 5.5% higher than that by sedimentation in normal turbidity period,and 40% higher in low turbidity period,it is 5%～10% higher for removals of algae,total organic carbon(TOC),trihalomethane formation potential(THMFP)and bacteria in all periods.The removal rates for turbidity,TOC,THMFP,algae and bacteria by DAF process can reach 95%,30%, 20%,94% and 97% respectively.From the results of the pilot test,it can be concluded that DAF is a feasible clarification process,especially for source water with low turbidity and high algal blooming.
