Authors: Bourgeous, Keith N.; Riess, Joe; Tchobanoglous, George; Darby, Jeannie L.; Johnson, Lloyd

Source: Proceedings of the Water Environment Federation, WEFTEC 2001: Session 41 through Session 50 , pp. 160-182(23)

Publisher: Water Environment Federation

Abstract:

A cloth-media disk filter (CMDF) was evaluated as an alternative to granular medium filtration for use in wastewater recycling applications. The CMDF was found to be effective for the filtration of effluent from an activated sludge treatment process and performed equivalent to, or better than, filtration technologies approved for California's Title 22 recycling applications. Effluent turbidity values from the CMDF were consistently less than the Title 22 limit of 2 NTU for influent turbidity values of up to 25 NTU at hydraulic loading rates varying between 7 and 15 m/hr (2.86 and 6.1 gal/ft²•min). The filter produced 154 m³/day (3,781 gal/day) at a hydraulic loading rate of 7 m/hr (2.86 gal/ft²•min) with high turbidity (6-25 NTU), and 330 m³/day (8,102 gal/day) at a hydraulic loading rate of 15 m/hr (6.1 gal/ft²•min) with low influent turbidity (equal to or less than 6 NTU), per m² (ft²) of filter cloth. The backwash water required by the CMDF at hydraulic loading rates between 7 and 15 m/hr (2.86 and 6.1 gal/ft²•min), and corresponding solids loading rates between 5 and 32 kg/m•day (0.21 and 1.35 lb/ft²•day), varied from 2.0 to 10 percent of the total influent flow. It was concluded that the CMDF could consistently meet the Title 22 requirements of a turbidity less than 2 NTU over a broad range of influent turbidity values and hydraulic loading rates

Document Type: Research article

Publication date: 2001-01-01

More about this publication?

• Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.
  
  WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
• Subscribe to this Title
• Membership Information
• About WEF Proceedings
• WEFTEC Conference Information
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Earth and Environmental Sciences ,  General & Civil Engineering ,  Hydraulic & Environmental Engineering
• By this author: Bourgeous, Keith N. ;  Riess, Joe ;  Tchobanoglous, George ;  Darby, Jeannie L. ;  Johnson, Lloyd

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers