Simplifying Treatment for Complex Waste Streams: Oil and Gas Produced Water and Fracturing Flowback Wastewater
Development of unconventional oil and gas (O&G) resources through hydraulic fracturing has surged in recent years. While declines in oil prices have temporarily reduced spending towards research and development of innovative water management techniques, regulations and expected
increase in freshwater demand and cost are intensifying competition among treatment providers to develop sustainable and efficient strategies for wastewater treatment and reuse. In this study, biologically active filtration (BAF), ultrafiltration (UF), and nanofiltration (NF) were investigated
for the treatment of O&G produced water (PW) and fracturing flowback (FFB) wastewater. Results demonstrate that with seeding of microorganisms naturally present in PW, a resilient biofilm can develop that effectively removes organic matter from O&G waste streams. This serves as a pretreatment
step for subsequent membrane desalination, mitigating membrane fouling. With thorough pretreatment, > 99% of organic constituents and > 94% of TDS can be removed, producing high quality permeate suitable for advanced reuse applications.
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Keywords: Produced water; beneficial reuse; biologically active filtration; nanofiltration; ultrafiltration
Document Type: Research Article
Affiliations: 1: Department of Civil and Environmental Engineering, Colorado School of Mines, CO 80401, USA 2: Department of Civil and Environmental Engineering, Colorado School of Mines, CO 80401, USA, Email: [email protected]
Publication date: 01 January 2016
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