%0 Journal Article
%T Impact of pH on the Generation of COD, Phosphorous and Ammonia-Nitrogen During the Anaerobic Fermentation of Excess Activated Sludge<br>pH对剩余污泥厌氧发酵产生的COD、磷及氨氮的影响
%A YUAN Hong-ying
%A ZHANG Hua-xing
%A CHEN Yin-guang
%A ZHOU Qi
%A <br>苑宏英
%A 张华星
%A 陈银广
%A 周琪
%J 环境科学
%D 2006
%I 
%X 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.
%K excess sludge
%K anaerobic fermentation
%K pH controlled<br>剩余污泥
%K 厌氧发酵
%K pH调节
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3ff3aba7486768130c3ff830376f43b398e0c97f0ff2dd53&cid=a7ca601309f5fed03c078bce383971dc&jid=64cd0aa99dd39f69401c615b85f123ef&aid=c9b86c5eaf77a1dc&yid=37904dc365dd7266&vid=db817633aa4f79b9&iid=df92d298d3ff1e6e&sid=fd56dfe2bc7cf81f&eid=700c99d38a660c7c&journal_id=0250-3301&journal_name=环境科学&referenced_num=12&reference_num=11