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Bendick, John A (2003) FEASIBILITY OF CROSS-FLOW MICROFILTRATIONFOR COMBINED SEWER OVERFLOWS. Master's Thesis, University of Pittsburgh. (Unpublished)

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Combined sewer overflows contribute high levels of suspended solids, pathogenic microorganisms, oxygen-demanding compounds and other pollutants into the receiving stream [US EPA, 2001]. The level of pollution coupled with regulatory pressure is challenging communities to find feasible treatment alternatives. Microfiltration may be a preferred treatment alternative. The feasibility of cross-flow microfiltration for the treatment of a dilute primary sewage effluent simulating combined sewer overflow wastewater was investigated. Ceramic membranes of various pores sizes (0.05 - 5.0 um) were tested at the bench and field scale to understand the impact of operating conditions on the permeate water quality and flux rate. A 0.2 um membrane operated with a 1.8 m/s cross flow velocity, a transmembrane pressure less than 2.1 bar and a backpulse frequency of 60 seconds were selected as the preferred operating conditions. The 0.2 um membrane consistently met water quality objectives for fecal coliforms, E Coli, enterococci, BOD5 and SS. The steady state flux rates are impacted by the feed suspended solids concentration and temperature, and an understanding of these parameters is critical to commercial scale design.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Bendick, John Ajabst149@pitt.eduJABST149
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairNeufeld, Ronald
Committee MemberCasson, Leonard
Committee MemberVidic,
Date: 3 September 2003
Date Type: Completion
Defense Date: 4 June 2003
Approval Date: 3 September 2003
Submission Date: 4 August 2003
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Civil and Environmental Engineering
Degree: MSCE - Master of Science in Civil Engineering
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: BOD; Combined Sewer Overflow; Cross Flow Velocity; Microfiltration; NH3-N; Primary Sewage Effluent; Bacteria; Transmembrane Pressure
Other ID:, etd-08042003-201758
Date Deposited: 10 Nov 2011 19:56
Last Modified: 15 Nov 2016 13:48


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