An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment

Komurcuoda leachate treatment plant, Istanbul, which consists of membrane bioreactor (MBR) and nanofiltration (NF) system, faced rapid flux decline in membranes after 3-year successful operation. To compensate rapid flux decline in membranes, the fouled membranes were renewed but replacement of the membranes did not solve the problem. To find the reasons and make a comprehensive analysis, membrane autopsy was performed. Visual and physical inspection of the modules and some instrumental analysis were conducted for membrane autopsy. Membranes were found severely fouled with organic and inorganic foulants. Main foulant was iron which was deposited on surface. The main reason was found to be the changing of aerator type of MBR. When surface aerators were exchanged with bottom diffusers which led to increasing of dissolved oxygen (DO) level of the basin, iron particles were oxidized and they converted into particulate insoluble form. It was thought that probably this insoluble form of the iron particles was the main cause of decreased membrane performance. After the diagnosis, a new pretreatment alternative including a new iron antiscalant was suggested and system performance has been recovered.

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REMOVAL OF REFRACTORY COMPOUNDS FROM LANDFILL LEACHATE BY USING NANOFILTRATION

Jurnal Teknologi ◽

10.11113/jt.v80.12728 ◽

2018 ◽

Vol 80 (3-2) ◽

Author(s):

Titik Istirokhatun ◽

Desinta Aswin Amalia ◽

Wiharyanto Oktiawan ◽

Arya Rezagama ◽

M. Arief Budihardjo ◽

...

Keyword(s):

Landfill Leachate ◽

Nanofiltration Membrane ◽

Permeate Flux ◽

Leachate Treatment ◽

Membrane Pore ◽

Effluent Quality ◽

Membrane Performance ◽

Refractory Compounds ◽

Membrane Pore Size ◽

Synthetic Leachate

Landfill leachate is a serious problem during treatment of municipal solid waste using landfill method. Less attention has been paid for the treatment of this leachate while this leachate is usually highly polluted. This study investigated the performances of nanofiltration membrane for treatment of landfill leachate (from Semarang, Indonesia). Landfill leachate was treated using NF99 nanofiltration membrane (pore size 200 Da). Synthetic leachate was used in this research which follows the characteristics of real leachate. Microfiltration (MF) membrane was used as a pretreatment before Nanofiltration (NF). The effect of pressure on membrane performance was observed. The membrane performance was examined for permeate flux and membrane rejection for TSS, TDS, and COD then compared to the effluent quality of existing leachate treatment. The rejection of COD, TSS and TDS were 96, 100 and 62%, respectively. The results suggest that the effluent had much better quality than the existing installation leachate treatment.

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Molecular weight distribution of a full-scale landfill leachate treatment by membrane bioreactor and nanofiltration membrane

Waste Management ◽

10.1016/j.wasman.2012.12.010 ◽

2013 ◽

Vol 33 (4) ◽

pp. 866-870 ◽

Cited By ~ 60

Author(s):

Marco Campagna ◽

Mehmet Çakmakcı ◽

F. Büşra Yaman ◽

Bestamin Özkaya

Keyword(s):

Molecular Weight ◽

Molecular Weight Distribution ◽

Landfill Leachate ◽

Weight Distribution ◽

Membrane Bioreactor ◽

Full Scale ◽

Nanofiltration Membrane ◽

Leachate Treatment

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Nitrifying biotower upsets due to snails and their control

Water Science & Technology ◽

10.2166/wst.1997.0058 ◽

1997 ◽

Vol 36 (1) ◽

pp. 247-254 ◽

Cited By ~ 3

Author(s):

Gudny Palsdottir ◽

Paul L. Bishop

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Treatment Plant ◽

Operating Parameters ◽

Control Mechanisms ◽

Successful Operation ◽

Snail Control ◽

The North ◽

Physa Gyrina

The primary purpose of this study was to find the proper operating parameters for successful operation of the nitrification biotowers at the North Regional Wastewater Treatment Plant in Dayton, Ohio, and to recommend an operational protocol to prevent future failures. This plant is subject to regular, periodic biotower upsets. It was found that these upsets are correlated with blooms of snails (Physa gyrina) which it is believed graze the biofilm and devour the nitrifying organisms. Snail control mechanisms are under investigation.

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Continuous starch fermentation process by nanofiltration membrane bioreactor

Membrane Technology ◽

10.1016/0958-2118(93)90091-y ◽

1993 ◽

Vol 1993 (37) ◽

pp. 6-9

Author(s):

P. Canepa ◽

A. Gradozzi

Keyword(s):

Membrane Bioreactor ◽

Fermentation Process ◽

Nanofiltration Membrane ◽

Starch Fermentation

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Evaluation of forward osmosis membrane performance and fouling during long-term osmotic membrane bioreactor study

Journal of Membrane Science ◽

10.1016/j.memsci.2016.06.014 ◽

2016 ◽

Vol 517 ◽

pp. 1-13 ◽

Cited By ~ 44

Author(s):

Elizabeth A. Bell ◽

Ryan W. Holloway ◽

Tzahi Y. Cath

Keyword(s):

Membrane Bioreactor ◽

Forward Osmosis ◽

Membrane Performance ◽

Osmotic Membrane Bioreactor

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Comparison of two treatments for the removal of selected organic micropollutants and bulk organic matter: conventional activated sludge followed by ultrafiltration versus membrane bioreactor

Water Science & Technology ◽

10.2166/wst.2011.300 ◽

2011 ◽

Vol 63 (4) ◽

pp. 733-740 ◽

Cited By ~ 26

Author(s):

E. Sahar ◽

M. Ernst ◽

M. Godehardt ◽

A. Hein ◽

J. Herr ◽

...

Keyword(s):

Organic Matter ◽

Activated Sludge ◽

Membrane Fouling ◽

Membrane Bioreactor ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Macrolide Antibiotics ◽

Organic Micropollutants ◽

Removal Rates ◽

Conventional Activated Sludge

The potential of membrane bioreactor (MBR) systems to remove organic micropollutants was investigated at different scales, operational conditions, and locations. The effluent quality of the MBR system was compared with that of a plant combining conventional activated sludge (CAS) followed by ultrafiltration (UF). The MBR and CAS-UF systems were operated and tested in parallel. An MBR pilot plant in Israel was operated for over a year at a mixed liquor suspended solids (MLSS) range of 2.8–10.6 g/L. The MBR achieved removal rates comparable to those of a CAS-UF plant at the Tel-Aviv wastewater treatment plant (WWTP) for macrolide antibiotics such as roxythromycin, clarithromycin, and erythromycin and slightly higher removal rates than the CAS-UF for sulfonamides. A laboratory scale MBR unit in Berlin – at an MLSS of 6–9 g/L – showed better removal rates for macrolide antibiotics, trimethoprim, and 5-tolyltriazole compared to the CAS process of the Ruhleben sewage treatment plant (STP) in Berlin when both were fed with identical quality raw wastewater. The Berlin CAS exhibited significantly better benzotriazole removal and slightly better sulfamethoxazole and 4-tolyltriazole removal than its MBR counterpart. Pilot MBR tests (MLSS of 12 g/L) in Aachen, Germany, showed that operating flux significantly affected the resulting membrane fouling rate, but the removal rates of dissolved organic matter and of bisphenol A were not affected.

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Ozonation of Membrane Bioreactor Effluent for Landfill Leachate Treatment

Environmental Technology ◽

10.1080/09593332608618583 ◽

2005 ◽

Vol 26 (1) ◽

pp. 65-73 ◽

Cited By ~ 31

Author(s):

A. Chaturapruek ◽

C. Visvanathan ◽

K.H. Ahn

Keyword(s):

Landfill Leachate ◽

Membrane Bioreactor ◽

Leachate Treatment

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Biological treatment of wastewater from fruit juice production using a membrane bioreactor: parameters limiting membrane performance

Water Science & Technology Water Supply ◽

10.2166/ws.2003.0175 ◽

2003 ◽

Vol 3 (5-6) ◽

pp. 253-259

Author(s):

C. Blöcher ◽

T. Britz ◽

H.D. Janke ◽

H. Chmiel

Keyword(s):

Membrane Bioreactor ◽

Extracellular Polymeric Substances ◽

Municipal Wastewater ◽

Fruit Juice ◽

Operating Conditions ◽

Production Plant ◽

Permeate Flux ◽

Produce Water ◽

Membrane Performance ◽

Test Operation

The application of a membrane bioreactor (MBR) was investigated to treat polluted process water from fruit juice processing. The aim was either direct discharge or further treatment by nanofiltration/low pressure reverse osmosis to produce water of drinking quality. The results of a one-year test operation of the process in industrial scale at a fruit juice production plant are presented. Focus was centred on the influence of activated sludge characteristics on membrane performance. Under the operating conditions in place, neither solids content, particle size distribution nor addition of nutrient significantly affected the permeate flux which was considerably lower than expected (based on municipal wastewater treatment with MBRs). Instead, evidence was obtained that the insufficient permeate flux was most likely due to the high content of extracellular polymeric substances. However, it was impossible to relate in detail the substantial flux variations during the test run to AS characteristics or changes in microbial population.

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