Bioreactors for oil sands process-affected water (OSPW) treatment: A critical review

摘要: Canada has the world's largest oil sands reservoirs. Surface mining and subsequent caustic hot water extraction of bitumen lead to an enormous quantity tailings (volumetric ratio bitumen:water=9:1). Due zero-discharge approach persistency complex matrix, producers are storing in vast ponds Northern Alberta. Oil comprised sand, clay process-affected (OSPW). OSPW contains extremely matrix organic contaminants (e.g., naphthenic acids (NAs), residual bitumen, polycyclic aromatic hydrocarbons (PAHs)), which proven be toxic a variety aquatic species. Biodegradation, among examined methods, is believed one most cost effective practical treat OSPW. A number studies have been published on removal related using biodegradation-based practices. This review focuses treatment various bioreactors, comparing bioreactor configurations, operating conditions, performance evaluation microbial community dynamics. Effort made identify governing biotic abiotic factors engineered biological systems receiving Generally, biofilms elevated suspended biomass beneficial resilience degradation bioreactor. The therefore suggests that hybridization membrane technology (to ensure higher biomass) more promising option remove constituents.