Anaerobic dynamic membrane bioreactor for wastewater treatment at ambient temperature

被引：67

作者：

Alibardi, Luca ^{[1
]}

Bernava, Nicoletta ^{[2
]}

Cossu, Raffaello ^{[1
]}

Spagni, Alessandro ^{[3
]}

机构：

[1] Univ Padua, Dept Ind Engn, I-35131 Padua, Italy

[2] Univ Padua, Dept Civil Environm & Architectural Engn, I-35131 Padua, Italy

[3] Italian Natl Agcy New Technol Energy & Sustainabl, Water Resources Management Lab, I-40129 Bologna, Italy

来源：

CHEMICAL ENGINEERING JOURNAL | 2016年 / 284卷

关键词：

Ambient temperature; Anaerobic processes; Dynamic membrane; Membrane bioreactor; Mesh filtration; CRITICAL FLUX; CAKE LAYER; SAF-MBR; FILTRATION; METHANE; PERMEABILITY; PERSPECTIVES; RECOVERY; SYSTEM;

D O I：

10.1016/j.cej.2015.08.111

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A bench-scale dynamic membrane (DM) bioreactor was operated to evaluate the anaerobic treatment of a synthetic municipal wastewater at ambient temperature. The DM was developed over a large pore size (200 pm) mesh in order to improve sludge filterability and reduce energy consumption. The system achieved average organic removals higher than 80% and 90% for total COD and filtered COD, respectively. Results also demonstrated that the biofilm, which the DM is made of, played a significant part in obtaining the overall organic removal efficiency. The large pore size of the mesh allowed for high membrane fluxes (approximately 15-20 L m(-2) h(-1)) applying low TMP (usually lower than 50-100 mbar). Fluxes higher than 20 L m(-2) h(-1) produced low solid removal efficiency indicating deterioration of the DM. COD mass balance suggests that the low hydraulic retention times applied to the system caused methane loss through the effluent due to oversaturation. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：130 / 138

页数：9

共 30 条

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