采用365 nm光助高铁酸钾法对4-氯酚水溶液进行氧化降解,考察了高铁酸钾投加量、溶液pH以及反应时间等因素对4-氯酚的降解效果的影响.结果表明:365 nm光助高铁酸钾对4-氯酚的CODCr降解明显优于单纯的高铁酸盐氧化法,但对脱氯具有抑制作用,在50 mg/L的4-氯酚溶液,在pH为3,高铁酸钾与对氯苯酚的摩尔比为8︰1,反应时间为60 min时,365 nm光助高铁酸钾协同作用下的4-氯酚的CODCr去除率与脱氯率分为90 %与55 %,比单纯高铁酸钾作用CODCr去除率提高了约10 %,脱氯率降低了约7 %.%Removal of 4-Chlorophenol aqueous solution was studied by potassium ferrate combined with 365 nm UV light. The factors of potassium ferrate dose, solution initial pH value and reaction time on the removal of 4-Chlorophenol was preliminary discussed. The results showed that 4-Chlorophenol was effectively degradation of CODCrand had inhibitory effect on dechlorination by potassium ferrate combined with 365 nm UV light technique,but . When the 4-Chlorophenol initial concentration was 50 mg/L, m(K2FeO4)︰m(nitrobenzene)=8, and the initial pH=3, the degradation efficiency of CODCrreached about 90 % and dechlorination rate reached about 53%;,it improved CODCrremoval efficiency about 10 % and inhibited dechlorination about 7% compared with bare potassium ferrate treatment, respectively.
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