Membrane bioreactor (MBR) for wastewater treatment: Filtration performance evaluation of low cost polymeric and ceramic membranes

2010 ◽  
Vol 71 (2) ◽  
pp. 200-204 ◽  
Author(s):  
P.K. Tewari ◽  
R.K. Singh ◽  
V.S. Batra ◽  
M. Balakrishnan
Keyword(s):  
Wastewater Treatment ◽  
Performance Evaluation ◽  
Membrane Bioreactor ◽  
Low Cost ◽  
Ceramic Membranes ◽  
Filtration Performance

Modelling and simulation of filtration performance in membrane bioreactor systems for municipal wastewater treatment

2003 ◽  
Vol 3 (5-6) ◽  
pp. 267-273 ◽  
Author(s):  
T. Wintgens ◽  
J. Rosen ◽  
T. Melin ◽  
C. Brepols ◽  
K. Drensla ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Transfer Model ◽  
Municipal Wastewater Treatment ◽  
Permeability Evolution ◽  
Filtration Performance ◽  
Cake Layer ◽  
Filtration Unit

The paper outlines a model of the filtration performance of submerged capillary microfiltration modules in membrane bioreactor applications for wastewater treatment. The model was implemented for process simulation and calibrated by using operating data of the full-scale municipal wastewater treatment plant Rödingen, Germany, operated by Erft River Association (Erftverband), which is equipped with activated sludge treatment and microfiltration units for biomass retention. Mathematically recordable foundations of filtration resistances, such as cake layer forming and fouling, are presented along with a mass transfer model, describing the concentration polarisation on the feed-side and its dependence on a multiphase flow regime. The model simulates the long-term decrease in permeability of the membranes and outlines the influence of main operating parameters on flux performance. After parameter fitting for one filtration unit, the permeability evolution for a second unit could be also calculated.

scholarly journals Oily wastewater treatment by adsorption–membrane filtration hybrid process using powdered activated carbon, natural zeolite powder and low cost ceramic membranes

2017 ◽  
Vol 76 (4) ◽  
pp. 895-908 ◽  
Author(s):  
Yaser Rasouli ◽  
Mohsen Abbasi ◽  
Seyed Abdollatif Hashemifard
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Natural Zeolite ◽  
Low Cost ◽  
Ceramic Membranes ◽  
Powdered Activated Carbon ◽  
Hybrid Process ◽  
Oily Wastewater ◽  
Alumina Membranes ◽  
Oily Wastewater Treatment

In this research, four types of low cost and high performance ceramic microfiltration (MF) membranes have been employed in an in-line adsorption–MF process for oily wastewater treatment. Mullite, mullite-alumina, mullite-alumina-zeolite and mullite-zeolite membranes were fabricated as ceramic MF membranes by low cost kaolin clay, natural zeolite and α-alumina powder. Powdered activated carbon (PAC) and natural zeolite powder in concentrations of 100–800 mg L−1 were used as adsorbent agent in the in-line adsorption–MF process. Performance of the hybrid adsorption–MF process for each concentration of PAC and natural zeolite powder was investigated by comparing quantity of permeation flux (PF) and total organic carbon (TOC) rejection during oily wastewater treatment. Results showed that by application of 400 mg L−1 PAC in the adsorption–MF process with mullite and mullite-alumina membranes, TOC rejection was enhanced up to 99.5% in comparison to the MF only process. An increasing trend was observed in PF by application of 100–800 mg L−1 PAC. Also, results demonstrated that the adsorption–MF process with natural zeolite powder has higher performance in comparison to the MF process for all membranes except mullite-alumina membranes in terms of PF. In fact, significant enhancement of PF and TOC rejection up to 99.9% were achieved by employing natural zeolite powder in the in-line adsorption–MF hybrid process.

Ultrafiltration of activated sludge with ceramic membranes in a cross-flow membrane bioreactor process

2000 ◽  
Vol 41 (10-11) ◽  
pp. 243-250 ◽  
Author(s):  
X-j. Fan ◽  
V. Urbain ◽  
Y. Qian ◽  
J. Manem
Keyword(s):  
Wastewater Treatment ◽  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Ceramic Membrane ◽  
Treatment Plant ◽  
Cross Flow ◽  
Ceramic Membranes ◽  
Permeate Flux ◽  
Chemical Cleaning

A cross-flow membrane bioreactor (MBR) for raw municipal wastewater treatment, consisting of a suspended growth bioreactor and a ceramic membrane ultrafiltration unit, was run over a period of more than 300 days in a wastewater treatment plant (WWTP). Sludge Retention Times (SRT) of 20, 10 and 5 days, respectively, and Hydraulic Retention Times (HRT) of 15 and 7.5 hours were tested. Membrane fouling was found to be a function of SRT and permeate flux. Under an SRT of 20 days and flux of 71 l/m2\ · h at 30°C, the MBR was successfully run over 70 days without the need for chemical cleaning. However chemical cleaning had to be undertaken every 3–5 days at shorter sludge retention times (typically an SRT of five days and a flux of 143 l/m2\ · h at 30°C). In this study, fouling materials were removed efficiently through chemical cleaning, with an average permeablity recovery of 87±11%.

scholarly journals High Loaded Synthetic Hazardous Wastewater Treatment Using Lab-Scale Submerged Ceramic Membrane Bioreactor

2017 ◽  
Vol 62 (3) ◽  
pp. 299-304 ◽  
Author(s):  
Mashallah Rezakazemi ◽  
Mohsen Maghami ◽  
Toraj Mohammadi
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Suspended Solids ◽  
Ceramic Membrane ◽  
Membrane Separation ◽  
Operation Time ◽  
Ceramic Membranes ◽  
Suspended Solid ◽  
Membrane Bioreactors ◽  
Separation Processes

Submerged ceramic membrane bioreactors (SCMBRs) are more efficient combinations of traditional activated hazardous sludge and new membrane separation processes in wastewater treatment. Suspended solids are separated from hazardous effluent using microfilter ceramic membranes in SCMBRs. A high loaded wastewater was treated using an SCMBR employing a homemade tubular ceramic membrane in laboratory scale. Hydraulic Retention Time (HRT) was 32 h and COD range was varied from 2000 to 5000 mg/l. COD removal was evaluated to be more than 90% after a week and the lab scale SCMBR showed desired performance for the wastewater treatment. Mixed Liquor Suspended Solid (MLSS) was increased from 2000 to 4000 mg/L during the SCMBR operation time.

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