2012 Fiscal Year Final Research Report

Development of reduction in alkalinity through distributed feeding in mesophilic and thermophilic UASB reactor treating acid wastewater

Research Project

Project/Area Number	22760410
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Civil and environmental engineering
Research Institution	Kagoshima National College of Technology
Principal Investigator	YAMADA Masayoshi 鹿児島工業高等専門学校, 都市環境デザイン工学科, 准教授 (80469593)
Project Period (FY)	2010 – 2012
Keywords	中温UASB反応器 / 高温UASB反応器 / アルカリ度削減 / 酸性廃水 / メタン発酵
Research Abstract	This study was conducted to develop a new feeding wastewater system that alkali supply is reduced in methane fermentation processes treating two types of acidic wastewater, i.e. sweet potato-based alcohol distillery wastewater and bio-ethanol distillery wastewater. The system could supply wastewater in the height direction, and was successful to reduce alkalinity to 63% and 36% in mesophilic and thremophilic methane fermentation processes, respectively, at the COD loading rate of 30 kgCOD/m3/day.

(3 results)