Preliminary study of groundwater denitrification using a composite membrane bioreactor

To research the composition and proportion of the denitrying bacterium in denitrification tank and increase the nitrogen removals rate. With the purpose of explore the curve between the amount of different denitrying bacterium and the quality of water treating, then find out the optimum of the species of nitrogen removal bacteria and the amount of the specific type of microorganism in the denitrification tank of metal membrane bioreactor at the optimized conditions of the water treating effects. The fluorescence in situ hybridization (FISH) approach is applied in this research, to set a preliminary study on the space-time character of denitrification bacteria population structure in denitrifical tank.

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A typical flat-panel membrane bioreactor with a composite membrane for sulfur removal

Frontiers of Earth Science ◽

10.1007/s11707-013-0370-2 ◽

2014 ◽

Vol 8 (1) ◽

pp. 142-149 ◽

Cited By ~ 2

Author(s):

Jian Guan ◽

Yuan Xiao ◽

Jimin Song ◽

Junhe Miao

Keyword(s):

Composite Membrane ◽

Membrane Bioreactor ◽

Sulfur Removal ◽

Flat Panel

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Biological Denitrification of Groundwater by a Composite Membrane Bioreactor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.864-867.2083 ◽

2013 ◽

Vol 864-867 ◽

pp. 2083-2089 ◽

Cited By ~ 1

Author(s):

Guo Min Cao ◽

Li Hui Zhang ◽

Mei Sheng ◽

Yong Di Liu

Keyword(s):

Carbon Source ◽

Cell Membrane ◽

Composite Membrane ◽

Membrane Bioreactor ◽

Composite Membranes ◽

Ethanol Solution ◽

Microporous Membrane ◽

Immobilized Cell ◽

External Carbon Source ◽

Biological Denitrification

A composite membrane bioreactor (CMBR) integrating the immobilized cell technique and the membrane separation technology was developed for biological denitrification of groundwater. In CMBR the groundwater and external carbon source (ethanol solution) are separated by the composite membranes consisting of a microporous membrane facing the groundwater and a plate-like immobilized cell membrane facing the ethanol solution. Nitrate and ethanol molecules diffused from the respective frames into the plate-like immobilized cell membrane where nitrate was reduced to gaseous nitrogen by the denitrifying bacteria present there with ethanol as carbon source. The microporous membrane attached to one side of plate-like immobilized cell membrane was used to separate product water from a plate-like immobilized cell membrane for retention of the disaggregated bacteria. Using the CMBR for groundwater denitrification, the over dosed external carbon source can be reused, and its treatment performance was perfect during continuous operation up to 98 days, and almost all effluent NO3--N, NO2--N, and CODMn concentrations are below their maximum contaminant levels as the NO3--N loading was less than 4.968 g.m-2.d-1.

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Effect of Antifouling Composite Membrane on Membrane Bioreactor: A Review

Membrane Journal ◽

10.14579/membrane_journal.2020.30.1.1 ◽

2020 ◽

Vol 30 (1) ◽

pp. 1-8

Author(s):

Bo Woo Lee ◽

◽

Sunwoo Lee ◽

Rajkumar Patel

Keyword(s):

Composite Membrane ◽

Membrane Bioreactor

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