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1 Polish Journal of Environmental Studies

1 2010

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Feasibility of bacterial technology for treating a polluted urban streams from the perspective of numerical modelling

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Yudianto D. , Xie Y.-B.

Polish Journal of Environmental Studies

2010

tom 19

nr 2

419-427

With the recent use of bacterial technology for the restoration of a polluted urban stream in China, this paper will show the general feasibility of such biological treatment from the perspective of numerical modelling. Based on the results, a low concentration of BOD₅ can be achieved in shorter distance for higher bacterial concentration applied. Generally greater flow of domestic wastewater will be proportionally balanced by higher bacterial growth. Under limited DO concentration, higher bacterial concentration would also create a breaking point on the declining distribution of BOD₅. The combination of oxygenation and artificial mixing of bacteria would result in lower concentrations of BOD₅ at the downstream.