Dissolved air precipitation/solvent sublation for oil-field produced water treatment

Thoma, Greg; Bowen, Mayumi; Hollensworth, D.

doi:10.1016/s1383-5866(98)00115-4

Cited by 42 publications

(11 citation statements)

References 8 publications

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“…Thoma et al [58] reported the use of bubble generation by dissolved air precipitation for use in solvent sublation bubble columns. Solvent sublation is a non-foaming adsorptive bubble separation.…”

Section: Dissolved Air Precipitation (Dap)mentioning

confidence: 99%

Review of technologies for oil and gas produced water treatment

Fakhru’l‐Razi

Pendashteh

Abdullah

et al. 2009

Journal of Hazardous Materials

1,865

787

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Produced water is the largest waste stream generated in oil and gas industries. It is a mixture of different organic and inorganic compounds. Due to the increasing volume of waste all over the world in the current decade, the outcome and effect of discharging produced water on the environment has lately become a significant issue of environmental concern. Produced water is conventionally treated through different physical, chemical, and biological methods. In offshore platforms because of space constraints, compact physical and chemical systems are used. However, current technologies cannot remove small-suspended oil particles and dissolved elements. Besides, many chemical treatments, whose initial and/or running cost are high and produce hazardous sludge. In onshore facilities, biological pretreatment of oily wastewater can be a cost-effective and environmental friendly method. As high salt concentration and variations of influent characteristics have direct influence on the turbidity of the effluent, it is appropriate to incorporate a physical treatment, e.g., membrane to refine the final effluent. For these reasons, major research efforts in the future could focus on the optimization of current technologies and use of combined physico-chemical and/or biological treatment of produced water in order to comply with reuse and discharge limits.

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Section: Dissolved Air Precipitation (Dap)mentioning

confidence: 99%

Review of technologies for oil and gas produced water treatment

Fakhru’l‐Razi

Pendashteh

Abdullah

et al. 2009

Journal of Hazardous Materials

1,865

787

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“…Another method for removing dissolved organics from produced water is air stripping. Thoma et al (1999) observed 40% removal of dissolved toluene and ethylbenzene from produced water in a bubbler separation process. Fang and Lin (1988) also reported greater than 99% benzene removal after less than 1 hour of air stripping.…”

Section: Treatment Of Produced Watermentioning

confidence: 97%

Long Term Field Development of a Surfactant Modified Zeolite/Vapor Phase Bioreactor System for Treatment of Produced Waters for Power Generation

Katz¹,

Kinney²,

Bowman³

et al. 2007

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iii EXECUTIVE SUMMARYThe main goal of this research was to investigate the feasibility of using a combined physicochemical/biological treatment system to remove the organic constituents present in saline produced water. In order to meet this objective, a physical/chemical adsorption process was developed and two separate biological treatment techniques were investigated. Two previous research projects focused on the development of the surfactant modified zeolite adsorption process (DE-AC26-99BC15221) and development of a vapor phase biofilter (VPB) to treat the regeneration off-gas from the surfactant modified zeolite (SMZ) adsorption system (DE-FC26-02NT15461). In this research, the SMZ/VPB was modified to more effectivtly attenuate peak loads and to maintain stable biodegradation of the BTEX constituents from the produced water. Specifically, a load equalization system was incorporated into the regeneration flow stream. In addition, a membrane bioreactor (MBR) system was tested for its ability to simultaneously remove the aromatic hydrocarbon and carboxylate components from produced water. The specific objectives related to these efforts included the following:(1) Optimize the performance VPBs treating the transient loading expected during SMZ regeneration.■ Evaluate the impact of biofilter operating parameters on process performance under stable operating conditions. ■ Investigate how transient loads affect biofilter performance, and identify an appropriate technology to improve biological treatment performance during the transient regeneration period of an SMZ adsorption system. ■ Examine the merits of a load equalization technology to attenuate peak VOC loads prior to a VPB system. ■ Evaluate the capability of an SMZ/VPB to remove BTEX from produced water in a field trial.(2) Investigate the feasibility of MBR treatment of produced water.■ Evaluate the biodegradation of carboxylates and BTEX constituents from synthetic produced water in a laboratory-scale MBR. ■ Evaluate the capability of an SMZ/MBR system to remove carboxylates and BTEX from produced water in a field trial.Laboratory experiments were conducted to provide a better understanding of each component of the SMZ/VPB and SMZ/MBR process. Laboratory VPB studies were designed to address the issue of influent variability and periodic operation (see DE-FC26-02NT15461). These experiments examined multiple influent loading cycles and variable concentration loadings that simulate air sparging as the regeneration option for the SMZ system. Two pilot studies were conducted at a produced water processing facility near Farmington, New Mexico. The first field test evaluated SMZ adsorption, SMZ Final Technical Report DE-FC26-04NT15546iv regeneration, VPB buffering, and VPB performance, and the second test focused on MBR and SMZ/MBR operation. The design of the field studies were based on the results from the previous field tests and laboratory studies.Both of the biological treatment systems were capable of removing the BTEX constituents in the laboratory and ...

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“…It induces the flotation of aliphatic and aromatic hydrocarbons, and removes the aliphatic compounds more efficiently than aromatic compounds. [10] 4.…”

Section: Dissolved Air Precipitation (Dap)mentioning

confidence: 99%