Biological treatment of oil and gas produced water: a review and meta-analysis.

摘要: Author(s): Camarillo, MK; Stringfellow, WT | Abstract: Biological treatment is effective but infrequently used for oil and gas produced water. To date, physical–chemical methods have been favored due to the smaller space requirements operational simplicity. Changing regulatory increased interest in recycling beneficial reuse led biological treatment. elucidate its potential role, we reviewed summarized 59 studies on of Oilfield water was predominantly studied (g 50%). More using real waternwere from China than any other country (37%). Real most (73%). Studies were bench-scale experiments (69%). Fixed-film reactors prevalent (27%). Water quality waters treated variable; median total dissolved solids (TDS) 28,000nmgnL chemical oxygen demand (COD) 1125nmgnL . Inhibition by salinity variable according system study design, efficacy generally decreased when TDS above 50,000nmgnL For treating samples, average COD removal 73% less , 54% greater Key issues microbial acclimation, toxicity, fouling, mineral scaling. Finding an inoculum not problematic as microorganisms capable degrading hydrocarbons isolated various environments. Treatment performance better where synthetic lieu samples. promising producing effluents suitable reuse, particularly it functions part a larger train. −1