In the routine operations of oil storage facilities (like oil tank farms), oil-water separation is a critical step for achieving efficient operation and safety control. The term "oil-water separation" specifically refers to the operational process of effectively segregating the water that has settled at the bottom of storage tanks (due to the different density) from the crude oil during the extraction, transportation, storage, and processing of petroleum. Its purpose is to completely separate the water at the tank bottom, ensuring the stability of crude oil quality and the safe and smooth operation of the storage facility.

Implementing efficient oil-water separation can significantly reduce the concentration of pollutants such as oil substances and suspended solids (SS) in the discharged wastewater, thereby mitigating the negative impact on the ecological environment. Simultaneously, the separated water can be reused as a resource or discharged after treatment to meet the required standards, which helps conserve water resources and promotes the sustainable management of the environment.

Faced with increasingly stringent environmental regulations and the rising public expectations for environmental quality, traditional water treatment methods for oil storage facilities have gradually become inadequate to meet the new requirements. In response, an innovative oil-water separation treatment technology has emerged. With its outstanding characteristics of high efficiency, environmental friendliness, and economic viability, this technology is leading the innovation in the field of water treatment for oil storage facilities.

Introduction to the Technical Process

The core of this process lies in the integrated application of two units: the CDFU (Cyclonic Dissolved Gas Flotation Unit) and the Coalescing Oil-Water Separator.

The process begins with the drainage from the tank farm entering the water-cut buffer tank, where initial separation of the oil phase and suspended solids is achieved through gravity settling. Subsequently, the wastewater flows to the Coalescing Oil-Water Separator. Utilizing its unique coalescing filter media and structural design, this unit effectively captures and aggregates fine oil droplets with a particle size of less than 10 microns, significantly accelerating the oil-water separation process with an efficiency exceeding 99%.

Thereafter, the effluent treated by the Coalescing Oil-Water Separator enters the CDFU. The CDFU technology generates a large number of ultrafine bubbles to efficiently and rapidly remove impurities such as free oil, emulsified oil, and suspended solids from the water. These ultrafine bubbles possess strong adsorption capabilities, enabling the demulsification of emulsified oil under the action of surface tension and the removal of oil contaminants adhering to the surface of suspended solids. This further reduces the oil and suspended solids content in the produced water, enhances the system's ability to handle water quality fluctuations, and ensures that the final effluent meets treatment and discharge standards.

Technical Advantages

Exceptional Treatment Efficiency: The solution employs advanced technologies and equipment to efficiently and rapidly remove various pollutants from wastewater, achieving a treatment efficiency of over 90%.

Space-Saving Design: The modular and integrated design significantly reduces the footprint of the entire system, conserving valuable land resources.

Minimal Chemical Usage: The process requires essentially no or only a very small amount of chemical agents, reducing sludge production and subsequent treatment costs.

Strong Fluctuation Resistance: The system possesses excellent shock load resistance, enabling it to adapt to wide fluctuations in water quality and ensuring stable effluent quality.

Low Comprehensive Cost: Benefiting from a streamlined process flow and simplified supporting equipment, the system's investment cost, operational expenses, and maintenance costs are all significantly reduced.

In summary, this innovative oil-water separation process for oil storage facilities, with its characteristics of high efficiency, environmental friendliness, and economic viability, provides a new solution and development path for water treatment in the industry.