Study on Operating Principle and Application of an Advanced Integrated Processing Technology - Air Lift Bioreactor (ALB) for Nitrogen and Phosphorus Removal

2013 ◽  
Vol 777 ◽  
pp. 274-279
Author(s):  
Xian Bin Liu ◽  
Xiao Ling Lei
Keyword(s):  
Phosphorus Removal ◽  
Small Scale ◽  
Reliable Operation ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Active Sludge ◽  
Integrated Processing ◽  
Energy Saving Technology ◽  
Air Lift ◽  
Operation Cost

ALB integration is consisted of anaerobic hydrolysis regulating, anaerobic aerobic reaction, air-lift reflux circulating and suspension clarifying precipitate. It is a new compact energy-saving technology of active sludge nitrogen and phosphorus removal. Its properties include shorter flow path, less land used, lower construction cost, lower operation cost, less discharge sludge, easier management, more reliable operation and so on. It propitious to be used for small-scale sewage treatments.

Role of Terrestrial Ecosystems Planted with Ligneous Species in M.H.E.A. System Receiving Urban Wastewaters

1999 ◽  
Vol 40 (3) ◽  
pp. 187-194
Author(s):  
M. Nemcova ◽  
D. Cadelli ◽  
M. Radoux
Keyword(s):  
Phosphorus Removal ◽  
Aquatic Ecosystems ◽  
Terrestrial Ecosystems ◽  
Stage Ii ◽  
Small Scale ◽  
Experimental Plant ◽  
Tertiary Treatment ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal

Tests were carried out in a small-scale experimental plant. The system consisted of aquatic ecosystems without macrophytes (stage I) followed by semi-aquatic ecosystems planted with Typha latifolia L. (stage II). The outflow of stage II was evenly distributed into 10 units of terrestrial ecosystems (stage III), planted with ligneous species or without vegetation (control). The whole plant received a hydraulic load of 384 1/day of urban wastewaters. The net treatment area per person equivalent (PE) was 8 m2. The study focused on the evaluation of the role of terrestrial ecosystems mainly in tertiary treatment (nitrogen and phosphorus removal). Stages I and II with a surface area of 4 m2/PE assure a primary and secondary purification level that conforms with European standards. As for the tertiary treatment, removal efficiency remains inadequate. The primary and secondary efficiencies were considerably enhanced by installing terrestrial ecosystems after the two previous stages. The outflow water of all tested successions respects the European norms for suspended solids (35 mg/l), COD (125 mg/l) and BOD5 (25 mg/l). Concerning tertiary efficiency, the planted ecosystems systematically enhance nitrogen and phosphorus removal compared to the control sand. The succession with Salix has shown the best results. The outflow concentrations were 0.8 and 3.7 mg/l of total nitrogen and 1.8 and 1.3 mg/l of total phosphorus respectively (average values for periods 1995 and 1996). The control successions containing non-planted unit (sand) were significantly the least efficient for both nitrogen and phosphorus removal.

Nitrogen and Phosphorus Removal by Activated Sludge Process: A Review

2017 ◽  
Vol 14 (2) ◽  
pp. 99-106 ◽  
Author(s):  
Zhengan Zhang ◽  
Shulin Pan ◽  
Fei Huang ◽  
Xiang Li ◽  
Juanfang Shang ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Phosphorus Removal ◽  
Activated Sludge Process ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal

Nitrogen and Phosphorus Removal by Submerged Membrane Bioreactor

2004 ◽  
Vol 31 (4) ◽  
pp. 349-356
Author(s):  
Li Na ◽  
Li Zhidong ◽  
Li Guode ◽  
Wang Yan ◽  
Wu Shiwei ◽  
...  
Keyword(s):  
Phosphorus Removal ◽  
Membrane Bioreactor ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Submerged Membrane Bioreactor

New German design guideline for single stage activated sludge plants

2000 ◽  
Vol 41 (9) ◽  
pp. 139-145
Author(s):  
R. Kayser
Keyword(s):  
Activated Sludge ◽  
Phosphorus Removal ◽  
Design Procedure ◽  
Single Stage ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Design Guideline

The German design guideline A 131 “Design of single stage activated sludge plants” was amended in 1999. The main changes of the guideline from 1991 are outlined. The design procedure for plants with nitrogen and phosphorus removal is presented.

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