engleski

Removal efficiency of COD, total P and total N components from municipal wastewater using hollow-fibre MBR

The membrane bioreactor (MBR) integrates well within the conventionally activated sludge system regarding advanced membrane separation for wastewater treatment. Over the last decade, a number of MBR systems have been constructed worldwide and this system is now accepted as a technology of choice for wastewater treatment especially for municipal wastewater. The aim of this work was to investigate and compare submerged MBR and conventionally activated sludge system for the treatment of municipal wastewater in Maribor, Slovenia. Because key parameters for successfully wastewater treatment are COD, total P and total N component were comparable these parameters in biological and filtration unit. We also comparable primary treatment of wastewater for both system. It can be concluded from the results, that the efficiencies being determined by the parameters were satisfied, such as, chemical oxygen demand, total phosphorous, and total nitrogen, which were 97%, 75%, and 90%, respectively. The efficiencies of ultrafiltration membrane for the same parameters were also determined, and compared with biological treatment. The results of this analysis show an additional effect regarding an improvement in the quality of the permeate but primary treatment is very important. For successfully application of MBR system smaller grid for primary treatment is needed.

municipal wastewater treatment; membrane bioreactor; membrane filtration; biological treatment

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