Light Oil Storage Tank Water Treatment Process
Process Overview
Process Introduction
Light oil (gasoline) storage depots regularly perform water draining operations, during which the drained water carries oil and must be treated to meet the requirements for reuse as cleaning water, while simultaneously recovering high-quality gasoline to create environmental and economic benefits. Shenzhen Sinokle Technology Co., Ltd. adopts a pure physical treatment process for depot wastewater with "CDFU + KHC Coalescing Oil Remover" as the core technology, which has been widely applied in water drainage treatment at crude oil tank farms, refined oil depots, heavy oil power plant tank farms of PetroChina, Sinopec, China Power, etc., solving environmental problems for customers while creating considerable economic benefits.
CDFU cyclone dissolved air flotation + KHC coalescing oil remover, pure physical separation process, recovered high-quality light oil can be directly reused, fully enclosed operation with exhaust gas directed to oil vapor recovery system, compliant effluent for reuse.
| Water Quality Parameter | Process Influent | Process Effluent |
|---|---|---|
| Oil Content | ≤500mg/L | ≤5mg/L |
| pH Value | 6-9 | 6-9 |
Light Oil Depot Water Treatment Process Flow Diagram
Technical Advantages
Technological Advantage
Compact equipment, reduced footprint and weight, suitable for space-constrained oil depot scenarios
Meets automated control and convenient operation requirements, minimizing manual operation steps and maximizing reduction of operational intensity
Pure physical separation process, no chemical agents added, recovered high-quality light oil can be directly reused, creating economic benefits
Fully enclosed pressurized operation, all exhaust gas directed to oil vapor recovery system, both eco-friendly and safe, zero VOC emissions
While ensuring effluent quality, the solution optimizes economic efficiency, stability and operability
No chemical pure physical separation, no oily sludge (hazardous waste) generated, high oil recovery rate, zero secondary pollution
Technical Comparison
Technical Comparison
| Comparison Item | Traditional Oil Separation + Chemical Coagulation | CDFU + KHC Coalescing Oil Remover |
|---|---|---|
| Treatment Effect | Unstable effluent, light oil is highly volatile and difficult to effectively remove, low compliance rate | Stable compliant effluent, CDFU high-efficiency flotation + KHC coalescing deep oil removal, effluent oil content below 5 mg/L |
| Chemical Usage | Requires demulsifiers, coagulants and other chemicals, high operating cost, generates oily sludge | Pure physical separation, no chemical agents required, no oily sludge generated, low operating cost |
| Light Oil Recovery | After chemical dosing, light oil quality degrades and cannot be directly reused, causing economic losses | Pure physical separation recovers high-quality light oil with low water content, can be directly returned to oil tanks, significant economic benefits |
| Safety and Environmental Protection | Open operation, severe light oil volatilization, VOC emissions exceeding standards, safety hazards | Fully enclosed pressurized operation, exhaust gas directed to oil vapor recovery system, zero VOC emissions, inherently safe and eco-friendly |
| Footprint | Oil separation tank + dosing system occupies large area, requires new concrete structures | Skid-mounted design, small footprint, no civil construction required, online installation without production shutdown |
| Operation and Maintenance | High manual operation, frequent dosing system maintenance, troublesome sludge treatment | Fully automated operation, remote monitoring capable, minimal manual labor, simple maintenance, low O&M cost |
