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袁辉洲, 章彩霞, 柯水洲, 陈忠, 高静思. 高锰酸钾氧化水中二甲基三硫醚的动力学[J]. 环境工程学报, 2016, 10(12): 6969-6976. doi: 10.12030/j.cjee.201601150
引用本文: 袁辉洲, 章彩霞, 柯水洲, 陈忠, 高静思. 高锰酸钾氧化水中二甲基三硫醚的动力学[J]. 环境工程学报, 2016, 10(12): 6969-6976. doi: 10.12030/j.cjee.201601150
shu
YUAN Huizhou, ZHANG Caixia, KE Shuizhou, CHEN Zhong, GAO Jingsi. Kinetics on dimethyl trisulfide oxidation by potassium permanganate in drinking water[J]. Chinese Journal of Environmental Engineering, 2016, 10(12): 6969-6976. doi: 10.12030/j.cjee.201601150
Citation: YUAN Huizhou, ZHANG Caixia, KE Shuizhou, CHEN Zhong, GAO Jingsi. Kinetics on dimethyl trisulfide oxidation by potassium permanganate in drinking water[J]. Chinese Journal of Environmental Engineering, 2016, 10(12): 6969-6976. doi: 10.12030/j.cjee.201601150
shu

高锰酸钾氧化水中二甲基三硫醚的动力学

  • 1.

    深圳职业技术学院建筑与环境工程学院, 深圳市工业节水与城市污水资源化技术重点实验室, 深圳 518055

  • 2.

    湖南大学土木工程学院, 长沙 410082

  • 3.

    中山市供水有限公司, 中山 528400

  • 4.

    深圳市清淼环保科技有限公司, 深圳 518055

  • 基金项目:

    国家水利部公益性行业科研专项（201301047）

  • 中图分类号: X52

Kinetics on dimethyl trisulfide oxidation by potassium permanganate in drinking water

  • 1.

    Shenzhen Key Lab of Industrial Water Conservation and Municipal Wastewater Resources Technology, School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518052, China

  • 2.

    School of Civil Engineering, Hunan University, Changsha 410082, China

  • 3.

    Zhongshan Water Supply Co. Ltd., Zhongshan 528400, China

  • 4.

    Shenzhen Qingmiao Environmental Technology Co. Ltd., Shenzhen 518055, China

  • Fund Project:

  • 摘要: 研究了氧化剂KMnO4氧化水中二甲基三硫醚的效能，探讨了KMnO4投加量、二甲基三硫醚的初始浓度、pH值、腐植酸浓度以及同类臭味物质甲硫醚对氧化反应的影响，并对反应动力学进行了分析。结果表明：不同剂量的高锰酸钾对二甲基三硫醚有较强的氧化能力，基本完全氧化需要一定时间（达2 h）。随着高锰酸钾投量的增加，去除率和反应速率也随之增加，但高锰酸钾投加量不宜过多，建议最佳投加量为2 mg·L-1。实验发现：二甲基三硫醚初始浓度、实际水体pH值以及腐殖酸浓度对氧化反应的影响不明显；但水中同类臭味物质甲硫醚对氧化反应有抑制作用，使反应进程变慢。高锰酸钾氧化二甲基三硫醚的反应符合二级反应动力学模型，二级反应的动力学常数为k=0.006 59 L·（min·mg）-1，理论曲线与实际反应曲线存在一定的差距，但整个反应过程中2条曲线反应的去除率的差距不大，因此理论曲线能较好的指导实践。
    Abstract: As a common oxidant in water treatment, potassium permanganate can effectively remove thioether substances from drinking water. In this study, the effects of four factors of the dosage of potassium permanganate, initial concentration of dimethyl trisulfide, pH, humic acid concentration, and same odorous substance (dimethyl sulfide) on the oxidation reaction of dimethyl trisulfide were investigated using beaker experiments. Then, we analyzed the reason for the effects and reaction kinetics of dimethyl trisulfide. The experimental results indicate that the oxidation of dimethyl trisulfide under different dosages of potassium permanganate was limited, and the oxidation time was long, up to 2 h. The removal and reaction rates increased with the increase of potassium permanganate dosage, but the potassium permanganate dosage should not be too high; it is recommended that the best dosage is 2 mg·L-1. The initial concentration of dimethyl trisulfide, pH, and humic acid concentration in the actual water body had no effect on the oxidation reaction. However, the odorous dimethyl sulfide had a certain inhibitory effect on the oxidation reaction, thereby slowing the reaction process down. The kinetics of dimethyl trisulfide decomposition by potassium permanganate in aqueous solution was found to follow a second-order rate law, with a second-order reaction rate constant of k=0.006 59 L·(min·mg)-1. Although there is a gap between the theoretical and experimental reaction curves, the gap between the two curves over the entire process is small; thus, the theoretical curve can be a good guide in practice.
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  • 收稿日期:  2016-03-08
  • 刊出日期:  2016-12-08
袁辉洲, 章彩霞, 柯水洲, 陈忠, 高静思. 高锰酸钾氧化水中二甲基三硫醚的动力学[J]. 环境工程学报, 2016, 10(12): 6969-6976. doi: 10.12030/j.cjee.201601150
引用本文: 袁辉洲, 章彩霞, 柯水洲, 陈忠, 高静思. 高锰酸钾氧化水中二甲基三硫醚的动力学[J]. 环境工程学报, 2016, 10(12): 6969-6976. doi: 10.12030/j.cjee.201601150
shu
YUAN Huizhou, ZHANG Caixia, KE Shuizhou, CHEN Zhong, GAO Jingsi. Kinetics on dimethyl trisulfide oxidation by potassium permanganate in drinking water[J]. Chinese Journal of Environmental Engineering, 2016, 10(12): 6969-6976. doi: 10.12030/j.cjee.201601150
Citation: YUAN Huizhou, ZHANG Caixia, KE Shuizhou, CHEN Zhong, GAO Jingsi. Kinetics on dimethyl trisulfide oxidation by potassium permanganate in drinking water[J]. Chinese Journal of Environmental Engineering, 2016, 10(12): 6969-6976. doi: 10.12030/j.cjee.201601150
shu

高锰酸钾氧化水中二甲基三硫醚的动力学

  • 1. 深圳职业技术学院建筑与环境工程学院, 深圳市工业节水与城市污水资源化技术重点实验室, 深圳 518055
  • 2. 湖南大学土木工程学院, 长沙 410082
  • 3. 中山市供水有限公司, 中山 528400
  • 4. 深圳市清淼环保科技有限公司, 深圳 518055
  • 收稿日期:  2016-03-08
基金项目:

国家水利部公益性行业科研专项（201301047）

摘要: 研究了氧化剂KMnO4氧化水中二甲基三硫醚的效能，探讨了KMnO4投加量、二甲基三硫醚的初始浓度、pH值、腐植酸浓度以及同类臭味物质甲硫醚对氧化反应的影响，并对反应动力学进行了分析。结果表明：不同剂量的高锰酸钾对二甲基三硫醚有较强的氧化能力，基本完全氧化需要一定时间（达2 h）。随着高锰酸钾投量的增加，去除率和反应速率也随之增加，但高锰酸钾投加量不宜过多，建议最佳投加量为2 mg·L-1。实验发现：二甲基三硫醚初始浓度、实际水体pH值以及腐殖酸浓度对氧化反应的影响不明显；但水中同类臭味物质甲硫醚对氧化反应有抑制作用，使反应进程变慢。高锰酸钾氧化二甲基三硫醚的反应符合二级反应动力学模型，二级反应的动力学常数为k=0.006 59 L·（min·mg）-1，理论曲线与实际反应曲线存在一定的差距，但整个反应过程中2条曲线反应的去除率的差距不大，因此理论曲线能较好的指导实践。

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