The broad “Microbe + Low Energy Consumption Tubular Membrane” technology has become a unique technique for water treatment in many oil fields.
Release Date:
2017-04-25
In the course of production, industrial enterprises inevitably generate wastewater. Addressing pollution and achieving a win-win outcome that balances economic benefits with environmental sustainability is not only crucial for the long-term development of the enterprise but also vital for ensuring a prosperous future for generations to come.
In the course of production, industrial enterprises inevitably generate wastewater. How to mitigate pollution and achieve a win-win outcome that balances economic benefits with environmental sustainability is not only crucial for the long-term development of the enterprise but also vital for the well-being of future generations. We cannot afford to prioritize “golden mountains” at the expense of “silver hills”; we must strive for both “green waters” and “green mountains,” for they, in turn, are the very essence of “golden mountains” and “silver hills.”
Boda, with a focus on the “Double Plus Clean” proprietary microbial and membrane technologies, has conducted extensive technical research on oilfield wastewater treatment and developed a unique “microorganism + low-energy tubular membrane” process. This technology features low capital investment, excellent effluent quality, and reduced sludge production, while minimizing or eliminating secondary pollution—offering a novel approach to oilfield wastewater treatment. To date, the project has been implemented in more than 20 oil-production facilities across over 10 domestic oilfields, with more than 30 field trials conducted and over 20 industrial-scale applications successfully completed. The project has demonstrated outstanding treatment performance, earning widespread recognition and unanimous praise from China National Petroleum Corporation, Sinopec, and other major oil companies.
Recently, Jilin Oilfield also announced that after half a year of operation, the effluent quality has met the design requirements and reached the "5.1.1" standard, and even exclaimed that Broad technology can turn corruption into a miracle. This indicates that this technology will be widely promoted and applied in the development of low and ultra-low permeability reservoirs in Jilin.
The incoming sewage flows into the buffer tank, the effluent from the buffer tank is directed to the degreasing tank, and the effluent from the degreasing tank then enters the microbial reaction tank for thorough degradation of oil and organic matter in the sewage. The effluent from the reaction tank is subsequently pressurized and fed into the membrane filtration system, where it meets the reinjection water quality standards required by the water injection system.
The key to this link is the microbial reaction tank and membrane separation.
Then how do they "bath" the large amount of sewage?
The comprehensive “Microbe + Membrane” oilfield produced-water treatment process is hailed as “a technological revolution in oilfield sewage treatment.” It seamlessly integrates microbial treatment technology with membrane separation technology. Specifically, it involves introducing Boda’s proprietary “double-plus-clear” obligate consortia into oily wastewater, where these consortia compete with the indigenous microorganisms to establish a dominant microbial community. This establishes an efficient system that rapidly degrades organic pollutants such as benzene, hydrocarbons, and lipids in petroleum wastewater, and subsequently breaks down complex organic matter like sludge into simple inorganic compounds through a series of intricate processes, including hydration, activation, and oxidation. The final degradation products are water and carbon dioxide. Obligate microorganisms utilize the organic pollutants in the wastewater as nutrients and derive energy to sustain their metabolic activities, thereby achieving the purification of the wastewater.
In May 2014, the “microorganism + membrane separation” pilot plant was commissioned at the Jilin Oilfield site. Following more than two years of commissioning—spanning laboratory testing and pilot-scale trials—during which the process was repeatedly compared, refined, and optimized, this technology was applied in early 2016 to the reconstruction project of the Jilin Oilfield’s wastewater treatment system. The design made full use of existing equipment and facilities, resulting in project cost savings of approximately RMB 3 million. After the unit was put into operation on October 18, 2016, it enabled the recovery and recycling of crude oil, reduced the consumption of coagulants, fungicides, and other chemicals, lowered energy consumption, and generated direct annual economic benefits of RMB 1,995,800.
Following the implementation of “microbe–membrane separation” technology, not only has formation damage caused by water quality been effectively mitigated and waterflooding efficiency improved, but also an adequate water supply has been ensured for oilfield water-injection development, thereby ushering in a new era of low-permeability produced-water treatment at the Jilin Oilfield.
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