NaCS–PDMDAAC immobilized autotrophic cultivation of Chlorella sp. for wastewater nitrogen and phosphate removal

2012 ◽  
Vol 187 ◽  
pp. 185-192 ◽  
Author(s):  
Xianhai Zeng ◽  
Michael K. Danquah ◽  
Chao Zheng ◽  
Ravichandra Potumarthi ◽  
Xiao Dong Chen ◽  
...  
Keyword(s):  
Phosphate Removal ◽  
Chlorella Sp ◽  
Nitrogen And Phosphate Removal

Simultaneous COD, nitrogen, and phosphate removal by aerobic granular sludge

2005 ◽  
Vol 90 (6) ◽  
pp. 761-769 ◽  
Author(s):  
M.K. de Kreuk ◽  
J.J. Heijnen ◽  
M.C.M. van Loosdrecht
Keyword(s):  
Granular Sludge ◽  
Phosphate Removal ◽  
Aerobic Granular Sludge ◽  
Nitrogen And Phosphate Removal

scholarly journals Ammonium and phosphate removal using batch laboratory cultures by microalgae and cyanobacteria isolated from Costa Rica water bodies

2018 ◽  
Vol 66 (1-1) ◽  
pp. 83
Author(s):  
Manuel Campos-Rudin ◽  
Ana Margarita Silva-Benavides
Keyword(s):  
Costa Rica ◽  
Phosphate Concentration ◽  
Phosphate Removal ◽  
Green Microalgae ◽  
Wastewater Reclamation ◽  
Ammonium Removal ◽  
Chlorella Sp ◽  
High Concentrations ◽  
Chlamydomonas Sp ◽  
Synechocystis Sp

This research analyzed three green microalgae (Scenedesmus sp., Chlamydomonas sp., and Chlorella sp.) and two cyanobacteria (Synechocystis sp. as unicellular strain and Nostoc sp. as filamentous strain) native from Costa Rica to remove high concentrations of ammonium and phosphate. Cultures were exposed for 120 h to initial concentrations of 70 mgL-1 ammonium and 9 mgL-1 phosphate, under constant light intensity of 60 µmol m-2s-1. Chlorella sp. showed the highest growth rate, followed by Chlamydomonas sp. and the cyanobacteria Nostoc sp. In contrast, Scenedesmus sp. and Synechocystis sp. cultures grew less than the other ones. The highest percentage of ammonium removal was achieved with Chlorella sp. followed by Chlamydomonas sp. and Synechocystis sp., then Scenedesmus sp. and Nostoc sp. Microalgae removed totally the initial phosphate concentration within 72 h, while cyanobacteria Synechocystis sp. and Nostoc sp. removed phosphate partially. These microorganisms are promising for wastewater reclamation.

Pilot Plant Research on Biological Phosphate and Nitrogen Removal at Seven Waste Water Treatment Plants

1993 ◽  
Vol 27 (5-6) ◽  
pp. 329-341 ◽  
Author(s):  
Eef J. Leeuw ◽  
Peter de Jong
Keyword(s):  
Pilot Plant ◽  
Waste Water Treatment ◽  
Phosphate Removal ◽  
Storm Water ◽  
Effluent Quality ◽  
Water Flows ◽  
Peak Loads ◽  
Water Treatment Plants ◽  
Biological Nitrogen ◽  
Nitrogen And Phosphate Removal

By means of a mobile pilot plant, several technologies for enhanced biological nitrogen and phosphate removal (10 mg N-total/l and 1 mg P/l) have been tested at seven locations. The main results with respect to effluent quality, sludge characteristics, effects of peak loads and storm water flows are presented.

Effects of Aeration on Nitrogen and Phosphate Removal with A2O Process

2012 ◽  
Vol 622-623 ◽  
pp. 1738-1741 ◽  
Author(s):  
Yong Feng Li ◽  
Jian Yu Yang ◽  
Guo Cai Zhang
Keyword(s):  
Phosphorus Removal ◽  
High Efficiency ◽  
Low Cost ◽  
Significant Decline ◽  
Phosphate Removal ◽  
Synthetic Wastewater ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
System A ◽  
Nitrogen And Phosphate Removal

A2O process is shortened form Anaerobic-Anoxic-Aerobic process, which can achieve carbon, nitrogen and phosphate removal, is widely used for its low cost and high efficiency. The Experiment using a 52.15 L anaerobic-anoxic- aerobic (A2O) reactor with simulate synthetic wastewater, by adjusting the aeration of Aerobic units, observing the performance of nitrogen and phosphorus removal under different dissolved oxygen(DO). The result of the whole operation show that the system can not keep a high TN removal efficiency under high aeration, and the low aeration made the system a significant decline in nitrogen and phosphorus removal.

scholarly journals Ammonia-Nitrogen and Phosphate Removal in Leachate using Algae and Bacteria Mixture

2019 ◽  
Vol 8 (4) ◽  
pp. 7007-7012
Keyword(s):  
Biological Treatment ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Phosphate Removal ◽  
Sanitary Landfill ◽  
Standard Set ◽  
Algae And Bacteria ◽  
Nitrogen And Phosphate Removal ◽  
Nitrogen Phosphorus

Leachate is a liquid that has been produced by the waste especially organic waste. In an engineered sanitary landfill, biological treatment is a common practice to reduce the leachate contaminants. The effluent from treated leachate needs to comply with the standard set by the Department of Environment (DOE), Malaysia before it is being released into the river. The leachate contains a high number of contaminants such as ammonia-nitrogen, phosphorus, heavy metal, biochemical oxygen demand (BOD), chemical oxygen demand (COD) and suspended solids. This study focused on the possibility of treating leachate by using algae and bacteria in biological treatment in removing ammonia-nitrogen and phosphate in leachate obtained from Air Hitam Sanitary Landfill, Puchong. Initially, the characteristics of the leachate sample with in-situ and laboratory tests were analyzed to quantify the contaminants in the leachate. In this research, the concentration of leachate samples together with algae and bacteria was diluted in one (1) liter of distilled water varied between 10%, 30%, 50%, 80% and 100% (v/v) in each flask. Then, all the samples were aerated to ensure that the algae and bacteria were at the optimum condition to treat the contaminants in the leachate for all the respective flasks. The results of ammonia-nitrogen, phosphate, nitrite-nitrogen, and nitrate-nitrogen were taken for every 3 days for 15 days to determine the percentage of the removal due to the algae and bacteria uptake in the leachate for all the samples. After 15 days, the percentage of removal of the contaminants were analyzed using factorial design. It showed that 50% (v/v) of leachate concentration in the diluted flask exhibits the highest removal percentage of ammonia-nitrogen with 96.95% ammonia-nitrogen being removed from the leachate. For phosphorus, 10% (v/v) diluted leachate concentration marked highest which is 94.92% has been removed from the leachate. Finally, the regression equation was established to predict the rate of ammonia-nitrogen removal.

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