Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor
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 4.00h). At shorter HRT, more obvious membrane fouling was caused by exacerbated cake layer formation and aggrava...
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
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2023
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| Truy cập trực tuyến: | https://scholar.dlu.edu.vn/handle/123456789/3013 https://www.sciencedirect.com/science/article/pii/S0960852416300323 |
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oai:scholar.dlu.edu.vn:123456789-30132023-09-28T06:14:00Z Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor Deng, Lijuan Guo, Wenshan Ngo, Huu Hao Du, Bing Wei, Qin Tran, Ngoc Han Nguyen Cong Nguyen Chen, Shiao-Shing Li, Jianxin Membrane bioreactor; Sponge; Hydraulic retention time; Bioflocculant; Membrane fouling 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 4.00h). 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® addition at the optimum HRT of 6.67h 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. 2023-09-28T06:13:56Z 2023-09-28T06:13:56Z 2016-06 Journal article Bài báo đăng trên tạp chí thuộc ISI, bao gồm book chapter 0960-8524 https://scholar.dlu.edu.vn/handle/123456789/3013 10.1016/j.biortech.2016.01.056 https://www.sciencedirect.com/science/article/pii/S0960852416300323 en Special Issue on Challenges in Environmental Science and Engineering (CESE-2015) |
| institution |
Thư viện Trường Đại học Đà Lạt |
| collection |
Thư viện số |
| language |
English |
| topic |
Membrane bioreactor; Sponge; Hydraulic retention time; Bioflocculant; Membrane fouling |
| spellingShingle |
Membrane bioreactor; Sponge; Hydraulic retention time; Bioflocculant; Membrane fouling Deng, Lijuan Guo, Wenshan Ngo, Huu Hao Du, Bing Wei, Qin Tran, Ngoc Han Nguyen Cong Nguyen Chen, Shiao-Shing Li, Jianxin Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor |
| description |
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 4.00h). 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® addition at the optimum HRT of 6.67h 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. |
| format |
Journal article |
| author |
Deng, Lijuan Guo, Wenshan Ngo, Huu Hao Du, Bing Wei, Qin Tran, Ngoc Han Nguyen Cong Nguyen Chen, Shiao-Shing Li, Jianxin |
| author_facet |
Deng, Lijuan Guo, Wenshan Ngo, Huu Hao Du, Bing Wei, Qin Tran, Ngoc Han Nguyen Cong Nguyen Chen, Shiao-Shing Li, Jianxin |
| author_sort |
Deng, Lijuan |
| title |
Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor |
| title_short |
Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor |
| title_full |
Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor |
| title_fullStr |
Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor |
| title_full_unstemmed |
Effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor |
| title_sort |
effects of hydraulic retention time and bioflocculant addition on membrane fouling in a sponge-submerged membrane bioreactor |
| publishDate |
2023 |
| url |
https://scholar.dlu.edu.vn/handle/123456789/3013 https://www.sciencedirect.com/science/article/pii/S0960852416300323 |
| _version_ |
1778792476927066112 |