Toward energy-neutral wastewater treatment: A membrane combined process of anaerobic digestion and nitritation-anammox for biogas recovery and nitrogen removal

被引：84
作者：
Dai, Wenchen [1 ]
Xu, Xiaochen [1 ]
Liu, Bing [1 ]
Yang, Fenglin [1 ]
机构：
[1] Dalian Univ Technol, Sch Environm Sci & Technol, Minist Educ, Key Lab Ind Ecol & Environm Engn, Dalian 116024, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2015年 / 279卷
关键词：
Anaerobic digestion; Mainstream nitritation-anammox; MBR; CANON; Energy-neutral wastewater treatment; BIOREACTOR TREATMENT; SEWAGE; STABILIZATION; TEMPERATURE; LIMITATION;
D O I：
10.1016/j.cej.2015.05.036
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Energy-neutral wastewater treatment is increasingly emphasized in practice. In this study, a membrane combined process of a submerged anaerobic MBR and CANON MBR was investigated for biogas recovery and nitrogen removal by treating membrane concentrated municipal wastewater under ambient temperatures. Anaerobic digestion and nitritation-anammox were successfully started up in MBRs within a shorter period. During the sequential operation of 81 d, the COD removal efficiency of the whole system was about 96% and most CODs were converted into biogas in the anaerobic MBR with a stable methane yield of 1672 mL/d, corresponding to 223 mL CH4/g COD. Meanwhile nitrogen removal was obtained in the sequential CANON MBR with a total nitrogen removal efficiency of 81%. Furthermore, the net energy consumption estimated of membrane combined process was 0.09 kWh/m(3). These results indicated that the membrane combined process is a promising treatment process to achieve energy-neutral municipal wastewater treatment. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：725 / 734
页数：10
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