次氯酸钠法处理难降解有机印染废水的研究
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摘要
高效、低成本处理难降解有机物的技术是目前环境治理研究的热点与难点。次氯酸钠法广泛用于处理环境中的污染物质,以其处理效果好、设备简单、投资经济等优点而受到人们的重视。本文采用次氯酸钠法处理三芳甲烷染料、偶氮染料以及葸醌染料,并分析处理效果与物质分子结构之间的关系。
通过正交试验和单因素影响实验,确定各目标物质采用次氯酸钠法进行处理的合理运行条件,包括次氯酸钠投加量、反应时间、染料的初始浓度。以葸醌染料为例,通过单因素影响实验确定次氯酸钠法处理葸醌染料的最佳运行条件。弱酸艳兰RAW(浓度为40mg/L)：次氯酸钠投加量为0.3mL,反应时间为2.5h,在此条件下弱酸艳兰RAW的脱色率可达94.28%,COD去除率可达63.82%。弱酸艳绿GS(浓度为40mg/L)：次氯酸钠投加量为1.0mL,反应时间为3h,在此条件下弱酸艳绿GS的脱色率可达92.52%,COD去除率可达69.45%。
对反应动力学的研究发现,次氯酸钠法处理目标物质的反应都近似呈现一级反应动力学特征。
本研究选择适当的染料分子结构描述符,通过线性哪里有归分析法对几种目标三芳甲烷染料和偶氮染料进行了分子结构与次氯酸钠法对其去除效果之间的定量关系研究。研究发现目标三芳甲烷染料的去除率与磺酸基数目、I/O值、芳香环数目和乙烷基数目之间存在着较好的线性相关性,其中I/O值对目标三芳甲烷染料去除率的影响贡献最显著；目标偶氮染料的去除率与磺酸基数目、I/O值、芳香环数目和偶氮基数目之间存在着较好的线性相关性,其中I/O值对目标偶氮染料去除率的影响贡献最显著。
High efficiency, low cost treatment for refractory organic technology is the hotspot and difficulty in the study of environmental management. Sodium hypochlorite method widely used in treatment of pollutants, with its good treatment effect, simple equipment, investment and other economic advantages and attention. In this paper, using sodium hypochlorite treatment of three aryl methane dyes, azo and anthraquinone dyes, and the analysis of treatment effect and the relationship between the molecular structure of the material.
By orthogonal test and single factor experiment, determine the target substance using sodium hypochlorite method for processing the reasonable operation conditions, including sodium hypochlorite dosage, reaction time, the initial dye concentration. In order to anthraquinone dyes as an example, through the single factor experiment to determine the effect of sodium hypochlorite treatment of anthraquinone dyes and the best operating conditions. Weak acid brilliant blue RAW (concentration is 40mg/L):sodium hypochlorite dosage is 0.3mL, reaction time 2.5h, under the conditions of weak acid brilliant blue RAW removal rate was 94.28%, COD removal rate can reach to 63.82%. Weak acid brilliant green GS (concentration is 40mg/L):sodium hypochlorite dosage is 1.0mL, reaction time 3h, under the conditions of weak acid brilliant green GS removal rate was 92.52%, COD removal rate can reach to 69.45%.
On the reaction kinetics study found, sodium hypochlorite treatment target material response are approximately shows a first-order kinetics characteristics.
This study selects the appropriate dye molecular structure descriptor, by means of linear regression, several target three aryl methane dyes and azo dyes were investigated by molecular structure with sodium hypochlorite method in the study of the quantitative relationship between the removal effect. Study found that target three aryl methane dye removal rate and sulfonic acid number, I/O, aromatic ring number and ethylene alkyl number existed good linear correlation between the I/O value, to target three aryl methane dye removal rate influence the most significant contribution; target azo dye removal rate and sulfonic acid number, I/O, aromatic ring number and azo number existed good linear correlation between the I/O value, the target of azo dye removal is affected the most significant contribution.
通过正交试验和单因素影响实验,确定各目标物质采用次氯酸钠法进行处理的合理运行条件,包括次氯酸钠投加量、反应时间、染料的初始浓度。以葸醌染料为例,通过单因素影响实验确定次氯酸钠法处理葸醌染料的最佳运行条件。弱酸艳兰RAW(浓度为40mg/L)：次氯酸钠投加量为0.3mL,反应时间为2.5h,在此条件下弱酸艳兰RAW的脱色率可达94.28%,COD去除率可达63.82%。弱酸艳绿GS(浓度为40mg/L)：次氯酸钠投加量为1.0mL,反应时间为3h,在此条件下弱酸艳绿GS的脱色率可达92.52%,COD去除率可达69.45%。
对反应动力学的研究发现,次氯酸钠法处理目标物质的反应都近似呈现一级反应动力学特征。
本研究选择适当的染料分子结构描述符,通过线性哪里有归分析法对几种目标三芳甲烷染料和偶氮染料进行了分子结构与次氯酸钠法对其去除效果之间的定量关系研究。研究发现目标三芳甲烷染料的去除率与磺酸基数目、I/O值、芳香环数目和乙烷基数目之间存在着较好的线性相关性,其中I/O值对目标三芳甲烷染料去除率的影响贡献最显著；目标偶氮染料的去除率与磺酸基数目、I/O值、芳香环数目和偶氮基数目之间存在着较好的线性相关性,其中I/O值对目标偶氮染料去除率的影响贡献最显著。
High efficiency, low cost treatment for refractory organic technology is the hotspot and difficulty in the study of environmental management. Sodium hypochlorite method widely used in treatment of pollutants, with its good treatment effect, simple equipment, investment and other economic advantages and attention. In this paper, using sodium hypochlorite treatment of three aryl methane dyes, azo and anthraquinone dyes, and the analysis of treatment effect and the relationship between the molecular structure of the material.
By orthogonal test and single factor experiment, determine the target substance using sodium hypochlorite method for processing the reasonable operation conditions, including sodium hypochlorite dosage, reaction time, the initial dye concentration. In order to anthraquinone dyes as an example, through the single factor experiment to determine the effect of sodium hypochlorite treatment of anthraquinone dyes and the best operating conditions. Weak acid brilliant blue RAW (concentration is 40mg/L):sodium hypochlorite dosage is 0.3mL, reaction time 2.5h, under the conditions of weak acid brilliant blue RAW removal rate was 94.28%, COD removal rate can reach to 63.82%. Weak acid brilliant green GS (concentration is 40mg/L):sodium hypochlorite dosage is 1.0mL, reaction time 3h, under the conditions of weak acid brilliant green GS removal rate was 92.52%, COD removal rate can reach to 69.45%.
On the reaction kinetics study found, sodium hypochlorite treatment target material response are approximately shows a first-order kinetics characteristics.
This study selects the appropriate dye molecular structure descriptor, by means of linear regression, several target three aryl methane dyes and azo dyes were investigated by molecular structure with sodium hypochlorite method in the study of the quantitative relationship between the removal effect. Study found that target three aryl methane dye removal rate and sulfonic acid number, I/O, aromatic ring number and ethylene alkyl number existed good linear correlation between the I/O value, to target three aryl methane dye removal rate influence the most significant contribution; target azo dye removal rate and sulfonic acid number, I/O, aromatic ring number and azo number existed good linear correlation between the I/O value, the target of azo dye removal is affected the most significant contribution.
引文
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[4]中海虹,顾国维,李咏梅.缺氧反硝化去除难降解杂环化合物吡啶研究[J].上海环境科学,2001,20(11)：530-533.
[5]李咏梅,顾国维,赵建夫.焦化废水中儿种含氮杂环化合物缺氧降解机理[J].同济大学学报,2001,29(6)：720-723.
[6]吕萍萍,王慧,施汉昌,等.基因工程菌强化芳香化合物的处理工艺[J].中国环境科学,2003,23(1)：12-15.
[7]李顺成,刘振华,李哲,等.SBR+高效菌种处理采油废水[J].城市环境与城市生态,2003,16(6)：74-75.
[8]乌锡康.有机化工废水治理技术,1999.7.
[9]林中祥.萃取-汽提法处理硝基苯废水的研究.环境导报[J],1998,1,14-16.
[10]张乃东.HV/Fe(C2O4)33-/H2O2法处理苯胺类废水的研究[D].哈尔滨：哈尔滨工业大学,1999.
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[12]周明华.电化学工艺去除有毒难降解有机物应用基础研究[D].杭州,浙江大学,2003.
[13]鞠美庭,冯承武.连续式超临界水氧化装置处理苯酚用溶液的动力学讨论[J].水处理技术,2000,26(2)105-109.
[14]林春绵.超临界水氧化法降解聚氧乐果的研究[J].中国环境科学,2002,20(4)305-308.
[15]贾建丽,等.新型负载型光催化剂及其4BS降解研究[J].中国环境科学,2001,21(4)：293-296.
[16]闫惠珍,樊荣涛.光催化在饮用水中的应用[J].环境与健康,2002,19(20),153-154.
[17]黄艳娥,琚行松.纳米二氧化钛光催化降解水中有机污染物的研究进展[J].化工环保,2002,22(1)：23-27.
[18]武正簧,周丽.Ti02薄膜光催化降解甲基橙和亚甲基蓝[J].化学工程师,2002,88(1),1-3.
[19]沈从学.载铂Ti02对3B艳红染料溶液光催化降解性能的研究[J].水处理技术,2001,27(1)33-36.
[20]张新荣TiO2·SiO2/beads降解有机磷农药的研究[J].工业水处理,2001,21(3)：13-15.
[21]曲显恩.含氯消毒剂的性能与应用[J].中国氯碱,2005,1：19-23.
[22]邵黎歌,程卿.次氯酸钠的分解特性及提高其稳定性能的途径[J].氯碱工业,1997,4：21-24.
[23]波任,M.E.等.无机盐工艺学.第四版.天津化工研究院组织翻译.下册.北京：化学工业出社,1981：405-417.
[24]Lange's Handbook ofChemistry.3th ed. New York(USA):McGraw-Hill Book Company,1985:10-19.
[25]王卉,吕锡武.电厂冷却水采用的杀菌方式[J].给水排水,1999,3：39-41.
[26]顾庆龙.次氯酸钠氧化法脱除二级生化出水中氨氮的中试研究[J].环境科学与管理,2007,32(12)：97-99,147.
[27]施光明,张品三,邢绍然.用次氯酸钠降低ADC发泡剂废水中氨氮含量[J].河南化工2006,32(6)：27-28.
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