摘要
将次氯酸钠(NaClO)分别与过硫酸氢钾(KHSO_5,简称PMS)和臭氧(O_3)协同活化,用于处理模拟印染废水,以罗丹明B(Rhodamine B,RhB)、活性艳蓝(Reactive Brilliant Blue,Knr)、活性艳红(Reactive Red X-3B)、甲基橙(Methyl Orange,MO)染料的降解率为指标,采用紫外-可见吸收光谱分析测试法,探讨其物质的量比、pH及废水中Cl^-、NO_3^-、SO_4^(2-)、HCO_3^-等因素的影响。结果表明:NaClO-PMS及NaClO-O_3体系最佳物质的量比分别为n(NaClO):n(PMS)=1:1,n(NaClO):n(O_3)=2:3,分别在pH为3～11、3～9时对模拟印染废水具有较好的降解效果,NaClO-PMS体系在酸性条件下降解RhB效果较好,pH=3时降解率可达到96.18%;NaClO-O_3体系在中性条件下对RhB的降解效果较好,pH=7时降解率为97.91%;阴离子对NaClO-PMS及NaClO-O_3体系处理印染废水的影响均较小。
Sodium hypochlorite(NaClO)was synergistically activated with peroxymonosulfate(PMS)and ozone(O3)to treat simulated printing and dyeing wastewater.The indicators are the degradation rates of dyes such as Rhodamine B(RhB),Reactive Brilliant Blue(Knr),Reactive Red(X-3B),and Methyl Orange(MO).UV-visible absorption spectroscopy analysis method is used to explore the influence of factors such as the ratio of material mass,pH,Cl-,NO3-,SO42-,and HCO3-in wastewater.The results show that the ratio of the optimum mass of NaClO-PMS and NaClO-O3 systems are n(NaClO):n(PMS)=1:1 and n(NaClO):n(O3)=2:3,which have good degradation of RhB at the pH of 3~11 and 3~9,respectively.The NaClO-PMS system has better degradation of RhB under acidic conditions,the degradation rate reaches96.18%at pH=3.The NaClO-O3 system has a good degradation effect on RhB under the neutral p H condition,and the degradation rate reaches 97.91%at p H=7.The concentration of anions have a little influence on the treatment effect of printing and dyeing wastewater by NaClO-PMS or NaClO-O3 system.
作者
张斌阳
李东亚
徐海明
孙磊
夏东升
ZHANG Bin-yang;LI Dong-ya;XU Hai-ming;SUN Lei;XIA Dong-sheng(School of Environmental Engineering,Wuhan Textile University,Wuhan 430200,Hubei,China;Engineering Research Center of Textile Printing and Dyeing Production,Ministry of Education,Wuhan 430200,Hubei,China;ShishiZhanyao Textile Technology Co.,Ltd.,Shishi 362712,Fujian,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2019年第5期979-983,共5页
Fine Chemicals
基金
湖北省自然科学基金项目(2018CFB682
2017CFA026)
石狮市科技计划重点项目(SS[2016]0137)~~
关键词
高级氧化
臭氧
次氯酸钠
过硫酸氢盐
印染废水
水处理技术
advanced oxidation
ozone
sodium hypochlorite
persulfate
printing and dyeing wastewater
water treatment
