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Application of biofilm-membrane bioreactor in municipal wastewater treatment
Summary
Researchers designed and tested a biofilm-membrane bioreactor system for municipal wastewater treatment, using a Fourier series algorithm to model performance against COD and ammonium nitrogen removal metrics. The system achieved stable COD removal of approximately 83% and NH4+-N removal of 85-90%, demonstrating its feasibility for municipal wastewater treatment applications.
Abstract To verify the feasibility of biofilm-membrane bioreactor in municipal wastewater treatment. In this paper, based on the Fourier series algorithm, the basic configuration of biofilm-membrane bioreactor, the design of membrane bioreactor test index and method, the proposed urban wastewater treatment system based on biofilm-membrane bioreactor, and the creation of experiments to verify the biofilm-membrane bioreactor with the example of urban wastewater in the sewer of residential buildings in the district on the two COD Cr and NH 4 + -N in urban wastewater in municipal wastewater. The results showed that the removal rate of COD Cr in municipal wastewater by the biofilm-membrane bioreactor system increased with time, and the removal rate was stable at about 83%. The NH 4 + -N removal rate increased with time and was stable between 85 and 90%. It can be shown that biofilm-membrane bioreactor can sufficiently reduce the concentration of COD Cr and NH 4 + -N in municipal wastewater, thus promoting municipal wastewater treatment. It also presents a new solution for urban wastewater treatment.
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