Evaluation of the freeze-thaw/evaportation process for the treatment of produced waters. Quarterly report, April 1 - June 30, 1996
The use of freeze-crystallization is becoming increasingly acknowledged as a low-cost, energy-efficient method for purifying contaminated water. Freeze-crystallization has been shown to be effective in removing a wide variety of contaminants from water. Water purification by using natural conditions to promote freezing appears to be an extremely attractive process for the treatment of contaminated water in many areas where natural climatic conditions will seasonally promote freezing. The natural freezing process can be coupled with natural evaporative processes to treat oil and gas produced waters year-round in regions where sub-freezing temperatures seasonally occur. The objectives of this research were related to development of a commercially-economic natural freeze- thaw/evaporation (FTE) process for the treatment and purification of water produced in conjunction with oil and gas. During the reporting period of 4/l/96 to 6/30/96, project research concentrated on Task 3. The objectives of Task 3 were to conduct detailed inorganic, organic, and radionuclide analyses of the process streams, evaluate the operation of the field demonstration based upon operating data collected and the results of sample analyses, and prepare a final report delineating the results of all project research conducted. All tasks of the research program were completed. Results confirm that the FTE process is effective in removing a wide variety of constituents from produced water, such as salts, organics, and heavy metals (including NORM). Further, the FTE process is capable of economically providing significant quantities of water of a quality suitable for beneficial use from oil and gas produced waters.
- Research Organization:
- Resource Technology Corp., Laramie, WY (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- AC22-92MT92009
- OSTI ID:
- 465827
- Report Number(s):
- DOE/MT/92009-16; ON: DE97003644
- Resource Relation:
- Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
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