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A pilot study for wastewater reclamation and reuse with MBR/RO and MF/RO systems [An article from: Desalination]
Description
This digital document is a journal article from Desalination, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
A pilot study was conducted to evaluate the quality of the effluent of an enhanced tertiary treatment process consisting of MBR/RO or MF/RO units and explore the feasibility of reclamation of treated effluent for potable and non-potable reuse applications. The performance of both the MBR/RO and MF/RO pilot plants was excellent. The MBR or MF alone was able to bring down the concentrations of most of the pollutants under acceptable limits for non-potable reuse applications. The application of RO further improved the treated water quality, especially the aesthetical and microbial qualities. Different strategies were employed to control membrane fouling in RO, and hypochlorite dosing showed the best results. The RO permeate quality in terms of conductivity, turbidity, organic content, ammonia, nitrate, hardness, E. coli and virus could meet the water quality requirements for many potable and non-potable reuse applications. In removal of total estrogens, the MBR/RO combination performed better than that of MF with RO, indicating the importance of the role of biomass. The rejection of virus in MBR and MF was greatly affected by the chemical membrane cleaning. It took more than 24 h for the recovery, implying that the presence of membrane biofilm plays a key role in rejection of virus.
Description:
A pilot study was conducted to evaluate the quality of the effluent of an enhanced tertiary treatment process consisting of MBR/RO or MF/RO units and explore the feasibility of reclamation of treated effluent for potable and non-potable reuse applications. The performance of both the MBR/RO and MF/RO pilot plants was excellent. The MBR or MF alone was able to bring down the concentrations of most of the pollutants under acceptable limits for non-potable reuse applications. The application of RO further improved the treated water quality, especially the aesthetical and microbial qualities. Different strategies were employed to control membrane fouling in RO, and hypochlorite dosing showed the best results. The RO permeate quality in terms of conductivity, turbidity, organic content, ammonia, nitrate, hardness, E. coli and virus could meet the water quality requirements for many potable and non-potable reuse applications. In removal of total estrogens, the MBR/RO combination performed better than that of MF with RO, indicating the importance of the role of biomass. The rejection of virus in MBR and MF was greatly affected by the chemical membrane cleaning. It took more than 24 h for the recovery, implying that the presence of membrane biofilm plays a key role in rejection of virus.
