| 乙二胺四乙酸(EDTA)生物降解特性 |
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| 引用本文： | 杨晓奕,蒋展鹏,师绍琪,管运涛,邓建利,路明义.乙二胺四乙酸(EDTA)生物降解特性[J].环境科学,2001,22(2):41-45. |
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| 作者姓名： | 杨晓奕 蒋展鹏 师绍琪 管运涛 邓建利 路明义 |
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| 作者单位： | 1. 清华大学环境科学与工程系,
2. 齐鲁石化公司研究院, |
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| 基金项目： | 国家自然科学基金资助项目(59778018) |
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| 摘 要： | 研究EDTA作为单一碳源以及在乙酸钠、葡萄糖共基质条件下EDTA的厌氧、好氧生物降解特性.静态试验厌氧采用厌氧间歇试验法,好氧采用瓦呼仪测试法.单基质条件时,好氧、厌氧情况下EDTA均难以生物降解;而共基质可促进EDTA降解.动态试验采用活性污泥法,结果表明:污泥经过30d的驯化,EDTA去除率可达到50%左右,加入10mg/L乙酸钠,HRT=160,EDTA去除率可达到80%;当HRT=20h,EDTA去除率可达到92.5%～95.1%.污泥龄是影响EDTA降解的主要因素.乙酸钠本身易生物降解,同时它与EDTA具有相似结构,这种官能团共享促进了EDTA的生物降解.乙酸钠的加入还改善了污泥性能.
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| 关 键 词： | EDTA 共基质 厌氧间歇试验 瓦呼仪 活性污泥法 |
| 文章编号： | 0250-3301(2001)02-05-0041 |
| 收稿时间： | 2000/7/16 0:00:00 |
| 修稿时间： | 2000年7月16日 |
Biodegradation Behavior of Ethylenediaminetetraethylene Acid |
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| Yang Xiaoyi,Jiang Zhanpeng,Shi Shaoqi,Guan Yuantao,Deng Jianli and Lu Mingyi.Biodegradation Behavior of Ethylenediaminetetraethylene Acid[J].Chinese Journal of Environmental Science,2001,22(2):41-45. |
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| Authors: | Yang Xiaoyi Jiang Zhanpeng Shi Shaoqi Guan Yuantao Deng Jianli and Lu Mingyi |
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| Institution: | Dept. of Environ. Sci. and Eng., Tsinghua University, Beijing 100084, China. |
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| Abstract: | Aerobic and anaerobic degradability of ethylenediaminetetraethylene acid(EDTA) were measured on Warburg respirometer and anaerobic batch reactors. Biodegradation of EDTA as a single substance was poor, but biodegradation of EDTA with co-substrate could be improved. The wastewater containing EDTA can be treated by activated sludge process. The EDTA removal efficiency was 80% under the circumstance HRT 16 h and EDTA removal efficiency reached to 92.5%-95.1% when HRT was 20 h. The main factor affecting the biodegradability of EDTA is sludge remained time. |
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| Keywords: | EDTA co-substrate anaerobic batch reactor Warburg respirometer activated sludge |
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