The grease separation equipment is an integrated, fully enclosed oil-water separator engineered for treating wastewater containing animal and vegetable fats – commonly found in hotels, restaurants, food processing plants, commercial kitchens, and food courts. It is equally suited for industrial applications involving mineral oil wastewater from oil fields, petrochemical facilities, and machining operations.
How It Works
Wastewater enters the unit through the grease interceptor where coarse solids are first removed by the screening mechanism. The effluent then flows into the separation chamber, where the density differential between oil and water – combined with the unit’s specialized internal geometry – achieves efficient phase separation. Recovered oil is stored in a dedicated collection vessel, while the clarified effluent discharges to the municipal sewer network. For installations where gravity discharge is not feasible, an integrated sewage lift station pumps the treated water to the municipal line.
Key Features
- 304 stainless steel construction with integrated modular design; fully enclosed operation with vent piping ensures odor-free performance
- Safety relief device prevents overflow and guarantees no wastewater spillage
- Manual basket or automatic skimmer screening with oil-water separation and automatic oil removal
- Treated effluent meets CJ3082-1999 standards for maximum allowable oil concentration to municipal sewers
- Thermostatic heating system prevents grease solidification, significantly improving oil recovery efficiency
- Two-stage separation chamber for more thorough and efficient grease removal
- Sludge discharge device effectively removes settled solids, preventing blockage buildup
- Operating noise below 60 dB (measured at 1 meter distance)
Control System (with Sewage Lift)
Each unit is equipped with a dedicated control panel featuring high-level alarm, fault alarm, and comprehensive protection functions:
- Dual-pump alternating operation with automatic switchover on failure
- Automatic restart after power restoration – no manual intervention required
- Manual override mode for emergency operation independent of control system status
- Phase-loss, phase-sequence, short-circuit, and overload protection for each motor circuit
- Audible and visual alarm with automatic single-pump mode lockout on fault
Product Variants
To serve diverse application scenarios, our grease trap systems are available in three configurations:
1. Integrated Enclosed Grease Separator (FGYY)
Modular design integrating independent screening settlement chamber, oil-water separation chamber, ventilation bridge, piping components, and electrical control system in one compact unit. Features a special conical collection device for optimal grease and sludge removal. Sewage lift module available as an add-on.
2. Integrated Hydraulic Enclosed Grease Separator (FGYZ)
Box-style exterior with optimized internal geometry combining screening, separation, ventilation, and piping in a single housing. Available with optional sewage lift chamber and protective enclosure for public or outdoor installations.
3. Horizontal-Flow Enclosed Grease Separator (FGYC)
Box-structure design with manual basket screening – a true no-power, energy-saving solution. Optional sewage lift device available per project requirements.
Installation Guidance
- Position the oil water separator level on the prepared foundation and secure firmly
- Install isolation valves at inlet and outlet connections for maintenance access
- Place the unit as close to the drainage point as possible; inlet pipe length should not exceed 10 times the pipe diameter
- Provide independent vent piping routed to an appropriate discharge location
- Connect oil discharge valve via hose to a collection drum for recovered grease
- For automatic screening models, route the screening discharge to a solids collection drum
- Wire the electrical connections per the control panel wiring diagram
- Ensure reliable grounding; supply voltage 220V or 380V, 50Hz per equipment configuration
Commissioning and Start-Up
Before trial operation, confirm all discharge valves are closed and the outlet valve is open. Fill the grease removal equipment with water until it flows from the outlet. For units with a sewage lift system, fill until the lift chamber level triggers pump start via the low-level float switch. The two pumps alternate automatically on each cycle. When both high and low floats are raised simultaneously, both pumps can operate together.
During first run, a small amount of oil may appear briefly in the effluent – this clears within approximately one minute of normal operation. As long as the separation chamber is not completely drained, this phenomenon will not recur during normal use.
Maintenance and Service
- Inspect and empty the oil and solids collection drums every 1 to 2 days under normal operating conditions
- Open sludge discharge valves periodically to remove accumulated sediment
- For FGYY and FGYZ models, sludge from primary and secondary chambers can be routed to the lift chamber and pumped out via the discharge pump
- Recommended twice-yearly comprehensive inspection; motor service interval at approximately 5,000 cumulative running hours
- Replace sealing elements as wear dictates; clean equipment exterior and maintain surrounding area cleanliness
Troubleshooting
- Pump runs but no discharge: Motor rotation may be reversed – swap motor lead connections
- Pump fails to start: Check for jammed float switch or float position misalignment
- Leaking pipe connections: Tighten fasteners; replace sealing gasket if leakage persists
- Control panel protective shutdown: Verify motor power rating matches equipment specification and adjust accordingly
Proper storage, regular maintenance, and timely replacement of wear parts ensure your grease separation system delivers reliable, long-term performance across all commercial and industrial applications.