NaClO-PMS及NaClO-O_3协同活化降解印染废水
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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(O_3)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~-,NO_3~-,SO_4~(2-),and HCO_3~-in wastewater.The results show that the ratio of the optimum mass of NaClO-PMS and NaClO-O_3 systems are n(NaClO):n(PMS)=1:1 and n(NaClO):n(O_3)=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-O_3 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-O_3 system.
Sodium hypochlorite(NaClO)was synergistically activated with peroxymonosulfate(PMS)and ozone(O_3)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~-,NO_3~-,SO_4~(2-),and HCO_3~-in wastewater.The results show that the ratio of the optimum mass of NaClO-PMS and NaClO-O_3 systems are n(NaClO):n(PMS)=1:1 and n(NaClO):n(O_3)=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-O_3 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-O_3 system.
引文
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[12]Li Yongtao(李永涛),Lai Lianjue(赖连珏),Yue Dong(岳东).Effects of inorganic anions on persulfate heat-activation for degradation of methyldiethanolamine(MDEA)simulated wastewater[J].Chinese Journal of Environmental Engineering(环境工程学报),2018,12(3):1-7.
[2]Ebrahiem E E,Al-Maghrabi M N,Mobarki A R.Removal of organic pollutants from industrial wastewater by applying photo-Fenton oxidation technology[J].Arabian Journal of Chemistry,2013,35(1):1-13.
[3]Yang Y,Jiang J,Lu X,et al.Production of sulfate radical and hydroxyl radical by reaction of ozone with peroxymonosulfate:a novel advanced oxidation process[J].Environmental Science&Technology,2015,49(12):7330-7339.
[4]Merle T,Pronk W,Von Gunten U.MEMBRO3X,a novel combination of a membrane contactor with advanced oxidation(O3/H2O2)for simultaneous micropollutant abatement and bromate minimization[J].Environmental Science&Technology Letters,2017,4(5):180-185.
[5]Bourgin M,Borowska E,Helbing J,et al.Effect of operational and water quality parameters on conventional ozonation and the advanced oxidation process O3/H2O2:Kinetics of micropollutant abatement,transformation product and bromate formation in a surface water[J].Water Research,2017,122:234-245.
[6]Feng Jiahao(冯家豪),Liu Haijin(刘海津),Wang Yingling(汪应灵),et al.Oxidation of salicylic acid by sodium hypochlorite[J].Chinese Journal of Environmental Engineering(环境工程学报),2016,10(2):531-536.
[7]Gao Huanfang(高焕方),Long Fei(龙飞),Cao Yuancheng(曹园城),et al.Advances in degradation of organic pollutants by novel persulfate activated technology[J].Chinese Journal of Environmental Engineerin(环境工程学报),2015,9(12):5659-5664.
[8]Espejo A,Aguinaco A,Amat A M,et al.Some ozone advanced oxidation processes to improve the biological removal of selected pharmaceutical contaminants from urban wastewater[J].Journal of Environmental Science and Health,Part A,2014,49(4):410-421.
[9]Kishimoto N,Nishimura H.Effect of pH and molar ratio of pollutant to oxidant on a photochemical advanced oxidation process using hypochlorite[J].Environmental Technology,2015,36(19):2436-2442.
[10]Hou M F,Liao L,Zhang W D,et al.Degradation of rhodamine B by Fe(0)-based Fenton process with H2O2[J].Chemosphere,2011,83(9):1279-1283.
[11]Gazi S,Rajakumar A,Singh N D P.Photodegradation of organic dyes in the presence of[Fe(Ⅲ)-salen]Cl complex and H2O2 under visible light irradiation[J].Journal of Hazardous Materials,2010,183(1/2/3):894-901.
[12]Li Yongtao(李永涛),Lai Lianjue(赖连珏),Yue Dong(岳东).Effects of inorganic anions on persulfate heat-activation for degradation of methyldiethanolamine(MDEA)simulated wastewater[J].Chinese Journal of Environmental Engineering(环境工程学报),2018,12(3):1-7.