Mixed electron donor autotrophic denitrification processes for groundwater treatment by immobilized biological filters

被引：2
|
作者：
Su, Jun-feng [1 ,2 ]
Liang, Dong-hui [1 ]
Huang, Ting-lin [1 ,2 ]
Lian, Ting-ting [1 ]
Wang, Wen-dong [1 ]
机构：
[1] Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Xian 710055, Shaanxi, Peoples R China
[2] MOE, Key Lab Northwest Water Resources Environm & Ecol, Xian 710055, Shaanxi, Peoples R China
来源：
WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY | 2017年 / 17卷 / 06期
基金：
中国国家自然科学基金;
关键词：
autotrophic denitrification (AD); electron donor; immobilized biological filter (IBF); nitrate; WASTE-WATER TREATMENT; MEMBRANE BIOFILM REACTOR; DRINKING-WATER; AUTOHYDROGENOTROPHIC DENITRIFICATION; II OXIDATION; NITRATE; SULFUR; BACTERIUM; REMOVAL; MN(II);
D O I：
10.2166/ws.2017.049
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
An immobilized biological filter (IBF) using Fe(II) and Mn(II) as mixed electron donors was evaluated for nitrate removal in groundwater. Results of the single factor experiments of strain SZ28 under the conditions of electron donor: electron acceptor ratio (1:2, 1.45:1, 3:1), Fe(II):Mn(II) ratio (1:9, 3:7, 5:5) demonstrated that the highest nitrate removal ratio was 100%, 49.6% (Mn(II)) and 100% (Fe(II)) under the conditions of electron donor:electron acceptor ratio of 3:1, Fe(II):Mn(II) ratio of 5:5. Mn(II) and Fe(II) as electron donor was tested for the effects on denitrification in the IBF reactor. Optimal conditions were obtained at an electron donor:electron acceptor ratio of 2:1, hydraulic retention time of 12 h and Fe(II):Mn(II) ratio of 5:5 with the highest removal ratio of nitrate-N (100%), Mn(II) (50.25%) and Fe(II) (99.2%). Results suggest that the optimal condition obtained from the IBF was feasible.
引用
收藏
页码：1673 / 1681
页数：9
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