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Submerged membrane bioreactor system for municipal wastewater treatment process: An overview

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Title Submerged membrane bioreactor system for municipal wastewater treatment process: An overview
 
Creator Gupta, Neha
Jana, N
Majumder, C B
 
Subject Submerged membrane
Bioreactor
Wastewater treatment
Nirification
Hydrarulic retention time
 
Description 604-612
The submerged membrane bioreactor (SMBR) is a promising technology for wastewater treatment and water reclamation. This paper provides an overview of wastewater treatment in a submerged membrane bioreactor process with a special focus on municipal wastewater systems. SMBRs predict more than 95% organic removal with relative short hydraulic retention times (HRTs) of 1-8 h and NH3 removal of more than 90% in the municipal wastewater treatment. It achieves 30% more removal of organic matter than activated sludge process. The COD can be reduced by 95%. Nitrification was complete and up to 82% of the total nitrogen could be denitrified. Nitrification/ denitrification is sensitive to the feed quality, such as dissolved oxygen (DO) concentration, temperature, organic loads, inorganic/ organic compounds and pH. The feed water composition, membrane geometry/configuration, membrane materials, and hydrodynamic effects are responsible for membrane fouling. These drawbacks can be reduced by maintaining turbulent conditions, operating at critical flux, and by selection of a suitable fouling resistance membrane material. Membrane washing is performed when the permeability is less than 10% of initial permeability. The reactor performance and the stability of the process and the membrane capacity are also discussed. Details of the various methods for washing are also included.
 
Date 2009-01-28T07:12:32Z
2009-01-28T07:12:32Z
2008-11
 
Type Article
 
Identifier 0971–457X
http://hdl.handle.net/123456789/2871
 
Language en_US
 
Publisher CSIR
 
Source IJCT Vol.15(6) [November 2008]