DRINKING-WATER DENITRIFICATION IN A MEMBRANE BIOREACTOR

被引:35
作者
DELANGHE, B
NAKAMURA, F
MYOGA, H
MAGARA, Y
GUIBAL, E
机构
[1] YAMANASHI UNIV,DEPT CIVIL & ENVIRONM ENGN,KOFU,YAMANASHI 400,JAPAN
[2] JAPAN ORGANO CO LTD,CENT RES LABS,TODA,SAITAMA 335,JAPAN
[3] INST PUBL HLTH,DEPT SANIT ENGN,MINATO KU,TOKYO 108,JAPAN
关键词
DENITRIFICATION; DRINKING WATER; ETHANOL CONSUMPTION; MEMBRANE SEPARATION; NITRATE REMOVAL; ULTRAFILTRATION;
D O I
10.2166/wst.1994.0263
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Drinking water denitrification was studied on a membrane bioreactor pilot plant. The nitrate removal yields remained constant at 99 %. The specific denitrification activities averaged 0.16 kg N-NO3.kg(-1)MLSS.d(-1) at 20 degrees C and pH 8, The permeation flux was about 0.5 m(3).m(-2).d(-1) throughout the study and did not vary with an increase in the suspended solids concentration. The dependence of the process efficiency on temperature and pH was put into equation, The specific denitrification activity decreased by a factor 1.9 with a temperature decrease of 10 degrees C, The optimal pH was found to be 8 - 8.5. The ethanol consumption was 1.4 g C.g(-1)N-NO3. The membrane bioreactor technique seems to be a promising answer for the nitrate problem of drinking waters.
引用
收藏
页码:157 / 160
页数:4
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