文章摘要
陈亚男,陈洁芸,李振华,李娟英.城市污水处理厂污泥中重金属海水浸出影响因素的研究[J].上海海洋大学学报,2016,25(2):223-228.
CHEN Yanan,CHEN Jieyun,LI Zhenhua,LI Juanying.Understanding of the influences on the leaching ability of heavy metals from sewage sludge of municipal wastewater treatment plant in seawater[J].Journal of Shanghai Ocean University,2016,25(2):223-228.
城市污水处理厂污泥中重金属海水浸出影响因素的研究
Understanding of the influences on the leaching ability of heavy metals from sewage sludge of municipal wastewater treatment plant in seawater
投稿时间:2015-07-30  修订日期:2015-10-02
DOI:10.12024/jsou.20150701520
中文关键词: 污水污泥  重金属  海水浸出  影响因素
英文关键词: sewage sludge  heavy metal  leaching  influence
基金项目:国家海洋局公益项目子课题(201105010-10);上海海洋大学水产动物遗传育种协同创新中心(A1-2035-15-000122)
作者单位E-mail
陈亚男 上海海洋大学 水产动物遗传育种协同创新中心, 上海 201306  
陈洁芸 上海海洋大学 水产动物遗传育种协同创新中心, 上海 201306  
李振华 上海海洋大学 水产动物遗传育种协同创新中心, 上海 201306  
李娟英 上海海洋大学 水产动物遗传育种协同创新中心, 上海 201306 jyli@shou.edu.cn 
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中文摘要:
      研究不同因素对城市污水污泥中重金属浸出的影响可以为城市污水污泥最终处理方法的选择、污泥投海对海洋环境的影响评估和海洋生态环境保护提供一定的数据支撑。为了解不同因素对污水污泥中重金属浸出情况的影响,以上海7处污水处理厂的污水污泥为研究对象,采用改进的水平振荡法,探讨了海水温度、盐度和微生物活动对污水污泥中重金属浸出的影响。结果表明,由于不同季节海水温度的差异,而温度影响重金属的存在形态,污泥中Zn和Hg在水温较高的夏季释放的较多,Cu、Cd、Pb和As则在春秋时释放的较多;海水盐度的高低影响海水中电解质的浓度和部分生物体内相关酶的活性,因此污泥在低盐度水域环境中释放出较多的Zn、Cu、Pb和Cd;同时细菌等微生物在污水污泥中可能会发生氧化、硝化等一系列生理生化反应,因此会影响重金属在污水污泥中的存在形态和环境,灭菌后的污泥较未灭菌时更易释放出Zn、Cu、Hg和As。
英文摘要:
      This study is aimed to describe the influence of different factors on the leaching process of heavy metals from urban sewage sludge, which was mainly based on the establishment of hazard-free treatment strategy of sewage sludge and a framework of marine environment protection. The modified horizontal extraction procedure was adopted to explore the impact of temperature, salinity and microbial activity on the leaching of sewage sludge-associated heavy metals collected from seven typical waste water treatment plants (WWTPs) in Shanghai. The results indicated that the releasing of dominated heavy metals from sludge were Zn and Hg under higher temperature, and Cu, Cd, Pb and As were the dominated ones under lower temperature; Salinity in seawater could affect the electrolyte concentration and activity of some enzymes, which led to Zn, Cu, Pb and Cd tend to be released in sea water at lower salinity. Many microbial activities such as oxidation reaction, nitrification and so on could affect the speciation and characteristics of heavy metals in sewage sludge, and more Zn, Cu, Hg and As would be released after sewage sludge were sterilized.
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