【摘要】 该研究考察了焦化废水的生化出水中运用臭氧和氯碱氧化法对总氰的去除效果,并对影响处理效果的主要因素进行了讨论。试验结果表明:臭氧法对焦化废水中氰化物的去除效果较差,不能使处理后废水中氰化物的浓度达标排放;造成该现象的主要原因是焦化废水中总氰多为铁氰化物,其性质较为稳定,难以被臭氧快速氧化。氯碱氧化法可以有效的去除焦化废水生化出水中的总氰,当次氯酸钠溶液投加量超过6%时,出水总氰浓度低于排放标准更多还原

【Abstract】 Removal efficiency of total cyanides in coking wastewater by ozone oxidation and chlor-alkali oxidation was investigated.The results show that ozone oxidation has a poor effect on removal of total cyanides,the concentration of effluent total cyanides can not meet the discharge standard.The cyanides in coking wastewater,which is relatively stable and difficult to be oxidized by ozone,is mostly ferricyanide.Chlor-alkali oxidation has good effect on removal of total cyanides.When the dosage of sodium hypochlorite solution is over 6 %,the concentration of effluent total cyanides can meet the discharge standard.更多还原