A Breakthrough in Refinery Wastewater Treatment: SINOKLE's Pure-Physical Process Revolutionizes Electric Desalting Drained Water Treatment
In the refining and petrochemical industry, the treatment of drained water from electric desalting units has long been a recognized difficult problem. This wastewater is severely emulsified, its oil content fluctuates sharply, and it is rich in various refractory pollutants. Traditional processes relying on gravity settling or chemical demulsification not only have limited separation performance and unstable effluent quality, but also produce high-water-content waste oil, large amounts of hazardous waste (oily sludge), and continuous chemical consumption, all of which ultimately translate into high long-term operating costs and environmental pressure for the enterprise.

Faced with this industry pain point, SINOKLE Technology, drawing on deep industry insight and continuous technological innovation, has proposed a disruptive solution: centering on pure-physical separation technology and turning wastewater treatment from a cost center into a profit growth point.
Technological Cornerstone: The Outstanding Performance of the Pure-Physical Process
The core of SINOKLE's electric desalting wastewater treatment solution lies in adopting a pure-physical process route that combines 'high-efficiency coalescing de-oiling'and“CDFUSwirl Dissolved Air Flotation. The technology eliminates the addition of chemical agents and, through the precise synergy of multiple physical effects such as coalescence, swirl centrifugation, and micro-bubble flotation, achieves efficient and rapid separation of oil, water, and solids.
High-efficiency de-oiling with stable compliance: The system can efficiently remove all types of oil, including emulsified oil, with a de-oiling efficiency of over 95%. Even under shock conditions where the influent oil content reaches 20,000 ppm, it still keeps the effluent oil content stably at extremely low levels (e.g., 10 ppm or less), far surpassing traditional processes.
Strong shock resistance: The process design has excellent tolerance to water quality fluctuations and can withstand large influent variations, ensuring continuous and stable operation under different production conditions.
How Are Costs Reduced? Reconstructing Economic Benefits in Four Dimensions
The technical advantages of SINOKLE's pure-physical solution translate directly into significant economic benefits, reflected in four key dimensions:
Turning waste into treasure and generating direct revenue: Unlike traditional chemical demulsification, which produces heavy waste oil that is hard to reuse, this process recovers high-quality light crude oil that can be returned directly to the crude oil tank farm for reprocessing. This alone opens up a new source of benefit for the enterprise.
Zero chemicals and minimal hazardous waste, sharply cutting treatment costs: The entire process requires no demulsifier or flocculant, completely eliminating chemical procurement costs. At the same time, pure-physical separation produces almost no new oily sludge (hazardous waste), avoiding high hazardous waste disposal fees and environmental risks.
Skid-mounted integration saves land, time, and investment: The unit adopts a highly integrated skid-mounted design with a small footprint and an extremely short construction period, allowing rapid online implementation without affecting production. A fully automatic control system enables unattended operation, reducing labor and O&M costs.
Safeguarding downstream systems for more economical operation: The treated effluent is clear and stable, greatly reducing the impact on the downstream wastewater treatment plant, safeguarding the long-term stable operation of the plant-wide water system, and avoiding system failures and costly remediation caused by upstream fluctuations.
Proven in Practice: Endorsement from Benchmark Enterprises
SINOKLE's electric desalting wastewater treatment solution has been successfully applied by many large refining and petrochemical enterprises, including PetroChina and Sinopec, and its outstanding results have been formally recognized by customers.
PetroChina Dushanzi Petrochemical project: using a two-stage CDFU process with a capacity of 100 m3/h, treating influent with an oil content of 2,000 ppm or less down to an effluent oil content of 10 ppm or less, with remarkable results.

PetroChina Sichuan Petrochemical: the user's report explicitly states that the unit achieves a de-oiling efficiency of over 95% and that the effluent exceeds technical requirements; it is highly automated, easy to operate, simple to maintain, and greatly reduces later operating costs.

PetroChina Urumqi Petrochemical: the assessment report confirms that the unit operates well, has stable performance, meets the discharge standards, and passed the assessment.

Technical Comparison: Intuitively Demonstrating Generational Advantages
Conclusion
The high-cost problem of electric desalting wastewater treatment is essentially a limitation of the traditional technological path. Through its innovative pure-physical separation process, SINOKLE Technology has successfully broken out of the traditional cycle of dosing, sludge generation, and further treatment, providing a reliable path that combines outstanding environmental benefits with prominent economic benefits.
This is not merely a technological upgrade, but an innovation in refining enterprises' philosophy of water management and cost control. Choosing SINOKLE means choosing a smarter and more sustainable way to achieve a win-win of environmental compliance and cost reduction with efficiency improvement, empowering enterprises to gain an early advantage on the road to green development.