Treatment of oily wastes using high-shear rotary ultrafiltration

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Journal of Environmental Engineering

DOI:https://doi.org/10.1061/(ASCE)0733-9372(1997)123:12(1234)· OSTI ID:566267

Reed, B E; Viadero, R Jr; Young, J ^[1]; Lin, W ^[2]

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1. West Virginia Univ., Morgantown, WV (United States). Dept. of Civil and Environmental Engineering
2. North Dakota State Univ., Fargo, ND (United States). Dept. of Civil Engineering

The high-shear rotary ultrafiltration (UF) system uses membrane rotation to provide the turbulence required to minimize concentration polarization and flux decline. The high-shear UF system was effective in concentrating oily wastes from about 5% to as high as 65%. The decoupling of turbulence promotion from feed pressurization/recirculation by rotating the membrane was the primary reason for the improvement in performance over that observed with conventional UF systems. Transitional and gel layer oil concentrations (20% and 50--59%, respectively) were higher than values reported in the literature. Permeate flux was dependent on the temperature and rotational speed. Flux increased by about 45% when the temperature was increased from 43 to 60 C. A larger decrease in waste viscosity, over that predicted for water alone, and increased oil droplet diffusivity were hypothesized as reasons for the stronger than expected flux-temperature relationship. The flux-rotational speed ({omega}) relationship was described by J = f({omega}){sup 0.90}; however, the gel layer exhibited stability with increasing {omega}. The ceramic membrane was superior to the polymeric membrane in regards to permeate flux and quality as well as cleaning and durability.

• Sponsoring Organization: USDOE
• OSTI ID: 566267
• Journal Information: Journal of Environmental Engineering, Journal Name: Journal of Environmental Engineering Journal Issue: 12 Vol. 123; ISSN 0733-9372; ISSN JOEEDU
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
FILTERS
INDUSTRIAL WASTES
TECHNOLOGY ASSESSMENT
ULTRAFILTRATION
WASTE OILS