华东师范大学学报(自然科学版) ›› 2018, Vol. 2018 ›› Issue (6): 81-87.doi: 10.3969/j.issn.1000-5641.2018.06.010

• 论文 • 上一篇    下一篇

LAS在城市黑臭河道中的生物降解

尹超1,2, 黄民生1,2, 何岩1,2, 崔贺1,2, 王迪芳1,2, 张婷月1,2, 肖冰1,2   

  1. 1. 华东师范大学 生态与环境科学学院, 上海 200241;
    2. 华东师范大学 上海市城市化生态过程与生态恢复重点实验室, 上海 200241
  • 收稿日期:2018-07-13 出版日期:2018-11-25 发布日期:2018-12-01
  • 通讯作者: 黄民生,男,教授,博士生导师,研究方向为水环境治理与修复.E-mail:mshuang@des.ecnu.edu.cn. E-mail:mshuang@des.ecnu.edu.cn
  • 作者简介:尹超,男,博士研究生,研究方向为水环境治理与修复.E-mail:yinchao31@163.com.
  • 基金资助:
    国家科技重大专项(2017ZX07207001,2018ZX07208008);上海市科技创新行动计划(18DZ1203806)

Biodegration of LAS in an urban malodorous river

YIN Chao1,2, HUANG Min-sheng1,2, HE Yan1,2, CUI He1,2, WANG Di-fang1,2, ZHANG Ting-yue1,2, XIAO Bing1,2   

  1. 1. School of Ecological and Environmental Science, East China Normal University, Shanghai 200241, China;
    2. Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, East China Normal University, 200241, China
  • Received:2018-07-13 Online:2018-11-25 Published:2018-12-01

摘要: 采用"river-die away"研究不同环境条件下阴离子表面活性剂LAS在上海市普陀区李湾河黑臭水体中的降解.探究不同的温度、pH、LAS初始浓度、葡萄糖和曝气条件对LAS生物降解的影响.结果表明:温度由10℃升至30℃,LAS降解半衰期由6.5 d降至2.5 d;表面活性剂在pH值为8.5±0.2时的降解性能优于pH值为7.5±0.2和pH值为9.5±0.2的降解性能;各实验组降解半衰期随着LAS初始浓度增大而增大(由2.9 d增至3.4 d);添加葡萄糖会抑制LAS生物降解,连续曝气会促进LAS生物降解.

关键词: LAS, 黑臭河道, 生物降解

Abstract: Biodegradation of the anion-surfactant LAS in the urban malodorous water of Liwan River in Putuo District (Shanghai) was studied by "river-die away"under different conditions. In particular, the influences of temperature, pH, initial concentration of LAS, nutrients (C6H12O6) and aeration conditions on the biodegradation of LAS were investigated. The study showed that when the temperature increased from 10℃ to 30℃, the half-life of LAS decreased from 6.5 days to 2.5 days. The biodegration of surfactant at pH=8.5±0.2 was slightly better than that at pH=7.5±0.2 and pH=9.5±0.2. With greater initial concentration, the half-life of LAS increased from 2.9 days to 3.4 days. C6H12O6 inhibited degradation of LAS, but the degradation of LAS accelerated under continuous aeration conditions.

Key words: LAS, urban malodorous river, biodegration

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