Fermentation and dewaterability of waste activated sludge under alkaline conditions: Effect of Mg(OH)2 - 文章详情页

作者：

Yuan, Yue (Yuan, Yue.) | Peng, Yong-Zhen (Peng, Yong-Zhen.) (学者：彭永臻) | Jin, Bao-Dan (Jin, Bao-Dan.) | Wang, Bo (Wang, Bo.) (学者：王波) | Wang, Shu-Ying (Wang, Shu-Ying.) (学者：王淑莹)

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EI Scopus PKU CSCD

摘要：

Waste　activated　sludge　anaerobic　fermentation　can　produce　short　chain　fatty　acids　(SCFAs),　which　can　improve　nitrogen　and　phosphate　removal　efficiency　after　being　used　as　carbon　source.　However,　the　nitrogen　and　phosphorus　in　the　fermentation　liquor　can　place　extra　burden　on　waste　water　treatment　plant.　This　study　used　Mg　(OH)2　to　control　the　pH　of　fermentation,　by　contrast　NaOH　was　also　used.　Then　we　tested　if　the　Mg　(OH)2　could　realize　waste　activated　sludge　fermentation　and　remove　the　NH4+-N　and　PO43--P　from　fermentation　liquor　at　the　same　time,　moreover,　the　dewaterability　of　fermented　sludge　was　also　investigated.　The　results　showed　that　Mg　(OH)2　could　promote　waste　activated　sludge　fermentation　with　2336.3　mgCOD/L　SCFAs　in　fermentation　liquor.　Also　Mg　(OH)2　could　remove　the　PO43--P　from　fermentation　liquor,　which　reached　to　nearly　zero　on　fourth　day.　At　last,　the　dewaterability　of　waste　activated　sludge　after　being　fermented　in　Mg　(OH)2　group　was　better　than　that　in　NaOH　group.　The　former　waste　activated　sludge　capillary　suction　time　(CST)　was　shorter　of　42.3　s　than　the　latter.

关键词：

Fermentation Alkalinity Magnesium compounds Sodium hydroxide Fatty acids Wastewater treatment Water treatment Nitrogen removal Waste treatment Magnesium

作者机构：

[ 1 ] [Yuan, Yue]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Peng, Yong-Zhen]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Jin, Bao-Dan]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Wang, Bo]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Wang, Shu-Ying]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China

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电子邮件地址：

pyz@bjut.edu.cn

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