Influence of light conditions of a mixture of red and blue light sources on nitrogen and phosphorus removal in advanced wastewater treatment using Scenedesmus dimorphus

The application of reversed A2/O process in practice in China is mainly discussed in this paper. As a new process on nitrogen and phosphorus removal, principle and technical features of reversed A2/O process are also summarized. The application in rebuilt wastewater treatment plant shows that reversed A2/O process not only has merits on high nitrogen and phosphorus removal efficiency, but also has merits on energy saving. The application in newly-build wastewater treatment plant shows that infrastructure and equipment investment of reversed A2/O process economized 15% and 10% respectively, compared to conventional A2/O process. The practical application shows that reversed A2/O process is a new nitrogen and phosphorus removal process, which is suitable for China's national conditions.

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Study on the enhanced biological nitrogen and phosphorus removal in a full-scale wastewater treatment plant with modified carrousel oxidation ditch process

2011 International Conference on Remote Sensing, Environment and Transportation Engineering ◽

10.1109/rsete.2011.5965251 ◽

2011 ◽

Author(s):

Linlin Bao ◽

Qingfeng Cheng

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Phosphorus Removal ◽

Treatment Plant ◽

Full Scale ◽

Oxidation Ditch ◽

Nitrogen And Phosphorus ◽

Nitrogen And Phosphorus Removal ◽

Biological Nitrogen ◽

Carrousel Oxidation Ditch

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Cost comparison of wastewater treatment in Danubian countries

Water Science & Technology ◽

10.2166/wst.2010.271 ◽

2010 ◽

Vol 62 (2) ◽

pp. 223-230 ◽

Cited By ~ 21

Author(s):

Matthias Zessner ◽

Christoph Lampert ◽

H. Kroiss ◽

S. Lindtner

Keyword(s):

Wastewater Treatment ◽

Low Income ◽

Phosphorus Removal ◽

Cost Comparison ◽

Low Income Countries ◽

Wastewater Management ◽

Nitrogen And Phosphorus ◽

Nitrogen And Phosphorus Removal ◽

Danube Catchment ◽

Catchment Areas

This paper investigates the costs of wastewater treatment (including sludge management) within the Danube catchment countries A, CZ, SK, HU, SL, RO, BG and UA. TK is considered as well. Additionally, the paper compares the total costs of wastewater management (including sewerage) with the incomes in the different countries. The annual costs of wastewater treatment in Austria are about 30 €/p.e. y for large plants with nitrogen and phosphorus removal. In low income countries of the Danube and Black Sea catchment areas they are at a maximum 30% lower than in Austria. However, the incomes in countries like Bulgaria, Romania or Ukraine are 85% to 90% lower. The total annual costs for wastewater management (sewer development plus treatment) amount at least to 90€/p.e. y. Considering the level of income in those countries, financing of wastewater management completely by charges of the population equivalents connected is not feasible. Therefore other approaches for financing wastewater treatment are required.

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