工业水处理 ›› 2022, Vol. 42 ›› Issue (9): 64-71. doi: 10.19965/j.cnki.iwt.2021-1241

• 试验研究 • 上一篇    下一篇

NaHSO3活化KMnO4氧化去除水中嗅味物质的优化控制

田家宇1(), 金圣超1, 韩正双2(), 白雪娟2   

  1. 1. 河北工业大学土木与交通学院,天津 300401
    2. 天津市公用事业设计研究所,天津 300100
  • 收稿日期:2022-07-09 出版日期:2022-09-20 发布日期:2022-09-28
  • 作者简介:

    田家宇(1979— ),工学博士,教授。电话:13602171385,E-mail:

    韩正双,高级工程师。E-mail:

  • 基金资助:
    国家自然科学基金面上项目(51978232); 天津水务集团有限公司科技项目(2017KY-08)

Performance optimization of permanganate/bisulfite process for removing odor compounds in water

Jiayu TIAN1(), Shengchao JIN1, Zhengshuang HAN2(), Xuejuan BAI2   

  1. 1. School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China
    2. Tianjin Public Utility Design & Research Institute, Tianjin 300100, China
  • Received:2022-07-09 Online:2022-09-20 Published:2022-09-28

摘要:

二甲基异莰醇(2-MIB)和土臭素(GSM)等嗅味物质引起的饮用水嗅味问题是供水行业普遍关注的热点问题。围绕水中2-MIB和GSM的有效去除,研究了亚硫酸氢钠(BS)活化高锰酸钾(PM)对两种物质的氧化降解特性,优化了PM/BS体系的药剂投加方式,解析了常见水质因子对PM/BS体系去除2-MIB和GSM效果的影响。结果表明,PM/BS体系能有效氧化去除水中的2-MIB和GSM,但加药方式、药剂浓度比和PM投加量对氧化效果具有显著影响,多次投加比单次集中投加更有利于2-MIB和GSM的氧化去除,纯水条件下适宜的药剂浓度比和PM投加量分别为1∶5和50 μmol/L,2-MIB和GSM去除率可分别达到96%和98%以上。水体pH与HCO3 -对降解效果具有重要影响,pH为6.8的中性微偏酸性条件最有利于2-MIB和GSM的氧化去除;HCO3 -升高会显著抑制PM/BS体系对2-MIB和GSM的氧化去除。水中Cl-浓度未对PM/BS体系氧化降解2-MIB和GSM的效能产生明显影响。实际原水条件下PM/BS体系对2-MIB和GSM的氧化去除效果减弱,但去除率仍能达到44.8%和56.7%,表现出较好的应用潜力。

关键词: 亚硫酸氢钠, 高锰酸钾, 氧化, 嗅味物质, 三价锰, 优化控制

Abstract:

Taste and odor problem caused by typical odorants such as 2-methylisoborneol(2-MIB) and geosmin(GSM) is an important topic of general concern in water supply industry. Aiming at effective removal of 2-MIB and GSM,the degradation characteristics of 2-MIB and GSM by permanganate/bisulfite(PM/BS) process and the dosing mode of PM/BS were studied. Meanwhile,the effects of common water quality factors on the degradation of 2-MIB and GSM by PM/BS process were investigated. The results showed that PM/BS process could effectively remove 2-MIB and GSM. However,the reactant dosing mode,reactant ratio and PM dosage had significant effects on the removal efficiencies. It was found that multiple-step dosing was more efficient than single-centralized dosing. The PM/BS ratio and PM dosage were optimized as 1∶5 and 50 μmol/L,and the removal efficiencies of over 96% and 98% were achieved for 2-MIB and GSM in pure water condition,respectively. Bicarbonate and pH also exhibited significant influence on the removal of 2-MIB and GSM,the most favorable pH for PM/BS process was 6.8,and the increase of bicarbonate content could significantly inhibit the oxidative removal of 2-MIB and GSM. On the other hand,chloride ion had little effect on the removal of 2-MIB and GSM. Though removal of 2-MIB and GSM by PM/BS process were decreased in actual raw water,the removal efficiencies still reached to 44.8% and 56.7%,respectively,displaying good application potential for the PM/BS process.

Key words: sodium bisulfite, potassium permanganate, oxidation, odor compounds, manganese(Ⅲ), performance optimization

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