MEMBRANE BIOREACTOR FOR TREATMENT OF RECALCITRANT WASTEWATERS

Reaktor. 2012;13(1):1-9 DOI 10.14710/reaktor.13.1.1-9

 

Journal Homepage

Journal Title: Reaktor

ISSN: 0852-0798 (Print); 2407-5973 (Online)

Publisher: Diponegoro University

Society/Institution: Diponegoro University

LCC Subject Category: Technology: Chemical technology: Chemical engineering

Country of publisher: Indonesia

Language of fulltext: Indonesian, English

Full-text formats available: PDF

 

AUTHORS

Suprihatin Suprihatin (Department of Agroindustrial Technology, Faculty of Agricultural Technology, IPB Kampus IPB Darmaga, PO. Box 220, Bogor)
Muhammad Romli (Department of Agroindustrial Technology, Faculty of Agricultural Technology, IPB Kampus IPB Darmaga, PO. Box 220, Bogor)

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 2 weeks

 

Abstract | Full Text

<p><em>The low biodegradable wastewaters remain a challenge in wastewater treatment technology. The performance of membrane bioreactor systems with submerged hollow fiber micro- and ultrafiltration membrane modules were examined for purifying recalcitrant wastewaters of leachate of a municipal solid waste open dumping site and effluent of pulp and paper mill. The use of MF and UF membrane bioreactor systems showed an efficient treatment for both types wastewaters with COD reduction of 80-90%. The membrane process achieved the desirable effects of maintaining reasonably high biomass concentration and long sludge retention time, while producing a colloid or particle free effluent. For pulp and paper mill effluent a specific sludge production of 0.11 kg MLSS/kg COD removed was achieved. A permeate flux of about 5 L/m&sup2;h could be achieved with the submerged microfiltration membrane. Experiments using ultrafiltration membrane produced relatively low permeate fluxes of 2 L/m&sup2;h. By applying periodical backwash, the flux could be improved significantly. It was indicated that the particle or colloid deposition on membrane surface was suppressed by backwash, but reformation of deposit was not effectively be prevented by shear-rate effect of aeration. Particle and colloid started to accumulate soon after backwash. Construction of membrane module and operation mode played a critical role in achieving the effectiveness of aeration in minimizing deposit formation on the membrane surface.</em></p>