| pH对剩余污泥厌氧发酵产生的COD、磷及氨氮的影响 |
| |
| 引用本文： | 苑宏英,张华星,陈银广,周琪.pH对剩余污泥厌氧发酵产生的COD、磷及氨氮的影响[J].环境科学,2006,27(7):1358-1361. |
| |
| 作者姓名： | 苑宏英 张华星 陈银广 周琪 |
| |
| 作者单位： | 1. 同济大学污染控制与资源化研究国家重点实验室,上海,200092;天津城市建设学院,天津,300384
2. 同济大学污染控制与资源化研究国家重点实验室,上海,200092 |
| |
| 基金项目： | 国家高技术研究发展计划(863)青年基金项目(2004AA649330);教育部留学回国人员资助项目 |
| |
| 摘 要： | 城市污水处理厂产生的污泥按照来源的不同可以分为初沉污泥和剩余污泥,通过采用控制pH值的方法,在20～22℃条件下,研究了剩余污泥在不同pH条件下厌氧发酵的情况.结果表明:将剩余污泥的pH值控制为8.0～10.0,在20d的厌氧发酵时间内,溶出的COD(SCOD)要大于pH为5.0～7.0,特别是pH=10.0和pH=11.0时的SCOD值是pH=6.0时的10倍左右,并且第8d产生的挥发性脂肪酸(VFA)也为碱性条件大于酸性条件;但酸性条件下溶出的磷及氨氮大于碱性条件.
|
| 关 键 词： | 剩余污泥 厌氧发酵 pH调节 |
| 文章编号： | 0250-3301（2006）07-1358-04 |
| 收稿时间： | 7/7/2005 12:00:00 AM |
| 修稿时间： | 2005-07-072005-09-14 |
Impact of pH on the Generation of COD,Phosphorous and Ammonia-Nitrogen During the Anaerobic Fermentation of Excess Activated Sludge |
| |
| YUAN Hong-ying,ZHANG Hua-xing,CHEN Yin-guang and ZHOU Qi.Impact of pH on the Generation of COD,Phosphorous and Ammonia-Nitrogen During the Anaerobic Fermentation of Excess Activated Sludge[J].Chinese Journal of Environmental Science,2006,27(7):1358-1361. |
| |
| Authors: | YUAN Hong-ying ZHANG Hua-xing CHEN Yin-guang and ZHOU Qi |
| |
| Institution: | 1. State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China; 2. Tianjin Institute of Urban Construction, Tianjin 300384,China |
| |
| Abstract: | There are mainly two kinds of sludge in the municipal wastewater treatment plant, i. e. , primary and secondary sludge. This study investigated the effect of pH, ranging from 4.0-11.0, on hydrolysis in terms of soluble chemical oxygen demand (SCOD) production in the anaerobic solubilization of excess activated sludge at 20-22 degrees C. It was found that when the value of pH was 8.0-10.0, the production quantity of SCOD were higher than pH = 5.0-7.0. Especially when the pH was 10.0 or 11.0, the value of SCOD was almost 10 times of pH = 6.0 during the whole fermentation of 20 days. And volatile fatty acids (VFA) production on the 8th day under alkaline condition was higher than that under acidic condition. |
| |
| Keywords: | excess sludge anaerobic fermentation pH controlled |
| 本文献已被 CNKI 维普 万方数据 PubMed 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
