Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor

被引：60

作者：

Deng, Lijuan ^{[1
]}

Guo, Wenshan ^{[1
]}

Huu Hao Ngo ^{[1
]}

Du, Bing ^{[2
]}

Wei, Qin ^{[3
]}

Ngoc Han Tran ^{[4
]}

Nguyen Cong Nguyen ^{[5
]}

Chen, Shiao-Shing ^{[5
]}

Li, Jianxin ^{[6
]}

机构：

[1] Univ Technol Sydney, Sch Civil & Environm Engn, Ctr Technol Water & Wastewater, Broadway, NSW 2007, Australia

[2] Univ Jinan, Sch Resources & Environm Sci, Jinan 250022, Peoples R China

[3] Univ Jinan, Sch Chem & Chem Engn, Key Lab Chem Sensing & Anal Univ Shandong, Jinan 250022, Peoples R China

[4] Natl Univ Singapore, Fac Engn, Dept Civil & Environm Engn, 1 Engn Dr 2,E1A-02-19, Singapore 117576, Singapore

[5] Natl Taipei Univ Technol, Inst Environm Engn & Management, 1,Sec 3,Chung Hsiao E Rd, Taipei 106, Taiwan

[6] Tianjin Polytech Univ, Sch Mat Sci & Engn, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2016年 / 210卷

关键词：

Membrane bioreactor; Sponge; Hydraulic retention time; Bioflocculant; Membrane fouling; EXTRACELLULAR POLYMERIC SUBSTANCES; NITROGEN REMOVAL; GRANULAR SLUDGE; PERFORMANCE; ENHANCEMENT; REDUCTION; BIOMASS; REACTOR; CAKE;

D O I：

10.1016/j.biortech.2016.01.056

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The characteristics of activated sludge and membrane fouling were evaluated in a sponge-submerged membrane bioreactor (SSMBR) at different hydraulic retention times (HRTs) (6.67, 5.33 and 4.00 h). At shorter HRT, more obvious membrane fouling was caused by exacerbated cake layer formation and aggravated pore blocking. Activated sludge possessed more extracellular polymeric substances (EPS) due to excessive growth of biomass and lower protein to polysaccharide ratio in soluble microbial products (SMP). The cake layer resistance was aggravated by increased sludge viscosity together with the accumulated EPS and biopolymer clusters (BPC) on membrane surface. However, SMP showed marginal effect on membrane fouling when SSMBRs were operated at all HRTs. The SSMBR with Gemfloc (R) addition at the optimum HRT of 6.67 h demonstrated superior sludge characteristics such as larger floc size, less SMP in mixed liquor with higher protein/polysaccharide ratio, less SMP and BPC in cake layer, thereby further preventing membrane fouling. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：11 / 17

页数：7

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