Unpowered Gravity Oil Separation
The oil separation process primarily uses the natural density difference between oil and water, reducing the need for powered separation components.
Commercial Kitchen Wastewater & Grease Management System
Unpowered Automatic Oil Separation & Wastewater Lifting Integrated Machine
The Unpowered Automatic Oil Separation & Wastewater Lifting Integrated Machine is designed for commercial kitchens and foodservice facilities where greasy wastewater must be separated, collected and discharged efficiently. The oil-water separation section operates primarily through gravity separation, helping separate floating fats, oils and grease from wastewater without requiring powered separation components. The integrated wastewater lifting section then collects and transfers treated wastewater when gravity drainage alone is insufficient. With its enclosed stainless steel structure, integrated pipework, drainage connections and service-friendly design, the system is suitable for restaurants, hotels, shopping malls, central kitchens, canteens, food processing facilities and basement kitchen drainage projects. The final configuration can be selected according to wastewater flow, grease concentration, lifting height, discharge distance, installation space and site drainage conditions.
Selection noteNeed help choosing the right model? Send us your peak wastewater flow, kitchen type, number of sinks or drainage points, required lifting height, discharge distance, installation dimensions and local power supply. We can recommend a suitable configuration for your project.
PRODUCT DETAILS
A closer look at the product
Tell Us About Your Kitchen Wastewater Project
To recommend the correct system, please provide the kitchen type, estimated or peak wastewater flow, number of drainage points, grease load, inlet pipe size, outlet pipe size, required lifting height, horizontal discharge distance, available installation space and local power supply. For basement kitchens or renovation projects, drainage drawings, equipment-room layouts and installation-site photos are especially helpful.
CORE ADVANTAGES
Designed for selection, access and service
Oil Separation & Lifting in One Unit
Combines grease separation, wastewater collection and wastewater lifting in one integrated system to simplify kitchen drainage design.
Automatic Wastewater Transfer
The integrated lifting section can automatically discharge collected wastewater according to the selected control and pump configuration.
Durable Stainless Steel Construction
Stainless steel cabinet construction provides good corrosion resistance, durability and easier cleaning in demanding commercial environments.
Compact Integrated Design
Multiple treatment functions are combined within one enclosure, helping reduce equipment footprint and simplify installation.
Suitable for Basement Kitchens
Ideal for locations where the kitchen drainage point is below the municipal sewer or gravity drainage level and wastewater must be lifted.
Easy Maintenance & Cleaning
Accessible compartments, drainage outlets, valves and service connections simplify routine inspection, grease removal and tank cleaning.
Reduced Grease Load in Drainage Pipes
Separating fats, oils and grease before discharge helps reduce grease accumulation and the risk of downstream pipe blockage.
Project-Based Configuration
Capacity, tank arrangement, lifting system, piping interfaces and control configuration can be matched to different project requirements.
HOW IT WORKS
A clear process path
- 1
Wastewater Inlet: Greasy kitchen wastewater enters the integrated treatment tank through the inlet pipe.
- 2
Solid Settling: Heavier food residues and suspended solids are allowed to settle or be retained in the pretreatment section.
- 3
Gravity Oil Separation: Fats, oils and grease rise naturally to the surface due to the density difference between oil and water.
- 4
Oil Collection: Separated grease is retained in the oil collection area for subsequent removal and maintenance.
- 5
Wastewater Collection: The separated wastewater flows into the integrated wastewater lifting chamber.
- 6
Automatic Lifting: When the preset liquid level is reached, the lifting system transfers wastewater to the designated drainage pipe.
- 7
System Reset: After discharge, the system returns to standby and automatically repeats the treatment cycle.
APPLICATIONS
Where this system fits
- Commercial restaurants
- Hotel kitchens
- Shopping mall food courts
- Central kitchens
- Chain restaurant kitchens
- School canteens
- Hospital kitchens
- Factory cafeterias
- Office building canteens
- Basement commercial kitchens
- Underground food courts
- Catering facilities
- Cloud kitchens
- Supermarket food preparation areas
- Bakery and pastry facilities
- Meat and food processing areas
- Institutional kitchens
- Kitchen renovation projects
- Locations without suitable gravity drainage
- Commercial wastewater pretreatment systems
INFORMATION REQUIRED
Help us select correctly
- Kitchen type – restaurant, hotel, canteen, central kitchen, etc.
- Peak wastewater flow – L/s, m³/h or daily discharge volume.
- Number of sinks – including washing sinks and other wastewater sources.
- Cooking capacity – approximate meals served per day.
- Wastewater grease level – light, medium or heavy grease load.
- Inlet pipe diameter – existing or required connection size.
- Inlet height – height of the incoming wastewater pipe.
- Outlet pipe diameter – required discharge connection.
- Required lifting height – vertical difference from unit to discharge point.
- Horizontal discharge distance – approximate piping distance.
- Available installation space – length × width × height.
- Installation location – basement, equipment room, outdoors or other area.
- Local power supply – voltage, phase and frequency for the lifting system.
- Operating hours – estimated daily wastewater discharge period.
- Drainage system layout – gravity sewer or pressurized discharge connection.
- Required pump configuration – subject to project requirements.
- Maintenance access – available service and cleaning space around the unit.
- Site drawings/photos – recommended for customized projects.
FAQ
Before you request a model
What is an unpowered automatic oil separation and wastewater lifting integrated machine?+
It is a commercial wastewater treatment system that combines gravity-based grease separation with wastewater collection and lifting in one integrated unit.
Does “unpowered” mean the entire machine requires no electricity?+
Not necessarily. The oil-water separation section can work mainly through gravity without powered separation components. The wastewater lifting section normally requires a pump and electrical control system depending on the selected configuration.
How does the equipment separate oil from wastewater?+
It uses the density difference between oil and water. Fats, oils and grease naturally rise to the surface while the separated wastewater continues to the collection or lifting section.
Why is a wastewater lifting system required?+
A lifting system is required when wastewater cannot flow to the sewer naturally, especially in basement kitchens or locations where the drainage outlet is higher than the wastewater source.
Is it suitable for restaurant kitchens?+
Yes. It is designed for commercial restaurants, hotels, canteens, food courts, central kitchens and similar foodservice facilities.
Can it reduce drain blockage?+
By separating a significant portion of fats, oils and grease before wastewater enters downstream drainage pipes, the system can help reduce grease accumulation and blockage risk.
Does the system still need regular maintenance?+
Yes. Collected grease, sediment and food residues should be removed periodically, and the tank, valves, piping, pumps and control components should be inspected according to operating conditions.
Can it be installed in a basement?+
Yes. Basement commercial kitchens are one of the common applications because the integrated lifting function can transfer wastewater to a higher drainage point.
How do I choose the correct capacity?+
Selection should be based on peak wastewater flow, number of sinks, kitchen capacity, grease load, lifting height, discharge distance and available installation space.
Can the inlet and outlet connections be customized?+
Different connection arrangements may be available depending on the project. Provide your drainage drawings, pipe sizes and installation dimensions for confirmation.
Is the equipment made of stainless steel?+
The product shown features a stainless steel exterior structure. The exact stainless steel grade and internal material specifications should be confirmed for the selected model.
What information is required for a quotation?+
Please provide wastewater flow, kitchen type, lifting height, discharge distance, inlet/outlet dimensions, installation space, voltage and destination. Site drawings or photos are also recommended.
PRODUCT VIDEO
See How the Oil Separation & Wastewater Lifting System Works
Watch the uploaded product video or the linked WoECO YouTube or Facebook video.
PROJECT REVIEW
Request a Solution & QuoteNeed an Integrated Grease Separation & Wastewater Lifting Solution?
Send us your kitchen wastewater flow, drainage layout, lifting height and installation dimensions. We will help you select the appropriate oil separation and wastewater lifting system for your project.