Algal Uptake of Hydrophobic and Hydrophilic Dissolved Organic Nitrogen in Effluent from Biological Nutrient Removal Municipal Wastewater Treatment Systems

2011 ◽  
Vol 46 (2) ◽  
pp. 713-721 ◽  
Author(s):  
Haizhou Liu ◽  
Joonseon Jeong ◽  
Holly Gray ◽  
Scott Smith ◽  
David L. Sedlak
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Dissolved Organic Nitrogen ◽  
Organic Nitrogen ◽  
Municipal Wastewater ◽  
Biological Nutrient Removal ◽  
Municipal Wastewater Treatment ◽  
Wastewater Treatment Systems

Pilot Scale Study on Biological Nutrient Removal and Membrane Fouling Alleviation in Combined Membrane Bioreactor for Municipal Wastewater Treatment

2011 ◽  
Vol 365 ◽  
pp. 354-360 ◽  
Author(s):  
Shuo Liu ◽  
Ji Fu Wang ◽  
Bao Zhen Wang ◽  
Bing Wang ◽  
Wei Wan
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Removal Rate ◽  
Oxygen Demand ◽  
Biological Nutrient Removal ◽  
Municipal Wastewater Treatment ◽  
Nutrient Removal Rate

To solve the problem of eutrophication in receiving water, a novel Membrane Bioreactor (MBR) with combined configuration was designed for municipal wastewater treatment and reclamation. By dividing bioreactor into three zones, the combined MBR operated under anoxic, anaerobic and aerobic conditions. It provided optimum conditions for nitrification, denitrifying and phosphate accumulating bacterial growth which resulted in high biological nutrient removal rate directly. The operational performance of combined MBR pilot plant showed that it exhibited high nutrient removal rate on Chemical oxygen demand (CODcr), total nitrogen (TN) and total phosphorus (TP). The mean value of effluent CODcr, TN and TP removal rate was 90.63%, 63.05% and 60.51% respectively during 180 days of operation. In order to obtain stable membrane flux, the combined MBR packed with fibrous bio-film carrier and added diatomite. Furthermore, it could alleviate membrane fouling effectively. As a result, the combined MBR improved effluent water quality significantly and alleviated membrane fouling remarkably.

Application of Biotechnology to Municipal Wastewater Treatment

1991 ◽  
Vol 23 (10-12) ◽  
pp. 1723-1732 ◽  
Author(s):  
T. Matsui ◽  
S. Kyosai ◽  
M. Takahashi
Keyword(s):  
Wastewater Treatment ◽  
Genetic Engineering ◽  
Municipal Wastewater ◽  
Engineering Application ◽  
Municipal Wastewater Treatment ◽  
Sludge Treatment ◽  
National Project ◽  
Wastewater Treatment Systems ◽  
Raw Wastewater

Application of biotechnology to wastewater treatment for its improvement and greater understanding was investigated in the Japanese national project named Biofocus WT as to a microorganism bank, genetic engineering application, immobilization of microorganisms, bioreactors for wastewater treatment, bioreactors for sludge treatment, SS separators for raw wastewater, biosensors and new wastewater treatment systems.

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