The working principle of the oil-water separating and lifting equipment is mainly based on the density difference between oil and water in the oil-water mixture, and the oil is separated from the mixture through the physical separation principle to purify the water quality and protect the environment. The following are the detailed explanations and summarizations of its working principle:
1. Sewage intake and preliminary separation:
When the sewage containing water is dispersed to a certain degree (generally not more than 100mm), the sewage is pumped into the oil separator. Under the action of gravity, most of the water enters the liquid storage chamber inside the container through the filter cloth, while the oil and suspended solids stay on the top due to the difference in density.
2. Oil-water separation process:
The internal of the oil separator has a special-designed separation membrane. When the oil-water mixture flows into the equipment, because of the flow field design and the action of the separation membrane, the oil and water will automatically separate. The oil layer floats upward due to its small density, while the water layer sinks downward due to its large density, achieving efficient separation of oil and water.
3. Formation and cleaning of sludge layer:
Under the action of gravity, some heavier suspended solids settle to the bottom to form the sludge layer. The cleaning of the sludge layer can be achieved by the stirring force of the scraper and the shearing force of the water flow on the floating layer, removing oil and suspended solids.
4. Clean water discharge:
After oil-water separation and sludge cleaning, clean water is discharged from the bottom. With the help of the scraper’s pushing force or the pumping station, clean water can be smoothly discharged from the equipment for subsequent use or treatment.
5. Oil discharge and treatment:
The oil layer is discharged through the oil discharge pipeline and can be further processed or recycled. The recovered grease can be reused as a resource, reducing environmental pollution.
6. Intelligent control:
Modern oil-water separating and lifting equipment is also equipped with an electrical control system, which can realize automatic operation and intelligent monitoring. Through sensors and controllers, the working status and water quality of the equipment can be monitored in real-time, ensuring the stable operation of the equipment and the quality of the water meets the standards.
The working principle of oil-water separating and lifting equipment is a continuous and efficient process that separates oil from the oil-water mixture and cleans the sludge layer while discharging clean water to improve the water quality. This kind of equipment is widely used in industries such as petroleum, chemical, papermaking, power, and urban sewage and food processing plants waste water treatment systems. It is of great significance to protect the environment and improve the efficiency of water resource utilization.
