Why Commercial Grease Separation Matters
Every restaurant, hotel kitchen, and food processing facility generates wastewater saturated with animal fats, vegetable oils, and grease. Without proper pretreatment, this grease solidifies inside municipal sewer pipes — causing blockages, environmental violations, and costly fines. Chaodun’s grease separation equipment provides a fully enclosed, automated solution that separates oils from wastewater before discharge, keeping your operation compliant with municipal discharge standards.
How the Equipment Works
Wastewater enters the unit through the inlet pipe, where large solid debris is first removed by a deslagging device. The flow then passes into the oil-water separation chamber, where differences in specific gravity and specially designed internal structures allow oils to separate naturally and collect in a dedicated storage container. The treated water is then discharged to the municipal sewer network. For installations where gravity flow is not possible, an integrated sewage lift pump system ensures reliable discharge.
Key Design Features
- 304 Stainless Steel Construction: All wetted components built from corrosion-resistant 304 stainless steel, with fully enclosed operation and ventilation piping to eliminate odors.
- Integrated Modular Design: Combines deslagging, oil-water separation, ventilation, and (optionally) sewage lift functions in a single compact unit.
- Secondary Separation: Two-stage separation chamber ensures thorough grease removal — treated effluent meets CJ3082-1999 standards for oil concentration limits in municipal sewer discharge.
- Constant Temperature Heating: Built-in heating element prevents grease from solidifying, ensuring smooth collection and drainage even in cold conditions.
- Automatic or Manual Deslagging: Choose between automatic cutter deslagging or manual basket removal depending on debris volume and labor availability.
- Sludge Discharge Valve: Periodic bottom discharge removes accumulated sediment, preventing buildup and blockage.
- Low-Noise Operation: Equipment noise level stays below 60 dB at 1 meter distance.
Product Series
FGYY Integrated Sealed Grease Separator
Modular design integrates an independent deslagging-sedimentation chamber, oil-water separation chamber, ventilation bridge, piping components, and electrical control system into one unit. Features a special conical collection device for efficient grease capture and sludge removal. Optionally add a sewage lift module for discharge to elevated sewer lines.
FGYZ Integrated Hydraulic Sealed Grease Separator
Box-type exterior with optimized internal geometry combining deslagging, oil-water separation, and ventilation. Excellent grease separation and collection performance. Can be fitted with a sewage lift chamber and protective cover for outdoor or public-area installations.
FGYC Horizontal-Flow Sealed Grease Separator
Box-type structure with manual basket deslagging — a zero-power, gravity-driven oil-water separation unit ideal for low-volume applications. Can be upgraded with a sewage lift device when needed.
Technical Specifications
| Parameter | Value |
|---|---|
| Body Material | 304 Stainless Steel |
| Oil Removal Efficiency | Meets CJ3082-1999 discharge standards |
| Operating Noise | < 60 dB at 1 m |
| Power Supply | 220V / 380V, 50Hz |
| Control System | Dual-pump alternation, auto-failover, alarm, phase protection |
| Heating | Constant temperature device (prevents grease solidification) |
| Separation Stages | Secondary (two-stage) |
| Operation Mode | Fully enclosed, automatic or manual |
Control System Functions
Each unit is equipped with a dedicated control cabinet providing:
- Automatic Pump Alternation: Two main pumps take turns operating, balancing wear and extending service life.
- Auto-Failover: If one pump fails, the system immediately switches to the backup pump and triggers audible + visual alarms.
- Protection Functions: Phase-loss and phase-sequence protection, short-circuit and overload protection for each motor.
- Power-Restart Auto-Resume: After a power outage, the system automatically returns to operation without manual intervention.
- Manual Override: Individual pump start/stop available even during control system faults, ensuring emergency operation.
- Alarm System: High liquid level alarm, fault alarm, and alarm reset button.
Installation Guidelines
- Foundation: Ensure a level, reinforced concrete base is prepared before delivery. Provide adequate clearance for maintenance access on all sides.
- Positioning: Place the unit on the foundation and secure it firmly. Install isolation valves at the inlet and outlet for maintenance access.
- Piping: Connect inlet and outlet pipes. Keep inlet pipe length within 10× pipe diameter; insulate longer runs to prevent grease deposition.
- Ventilation: Install an independent vent pipe routed to an appropriate discharge location.
- Valve Check: Before commissioning, confirm all drain, oil discharge, and effluent valves are in the correct positions (closed for drain/oil, open for effluent).
- Oil Collection: Connect the oil discharge valve to a collection barrel via flexible hose.
- Deslagging Connection: For automatic deslagging units, route the discharge outlet to a debris collection barrel.
- Electrical: Wire according to the control cabinet diagram. Ensure reliable grounding. Supply voltage per equipment configuration: 220V or 380V, 50Hz.
Commissioning & Testing
- Confirm drain valves are closed and effluent valve is open.
- Fill the unit with water until it flows out the outlet. Activate the control cabinet — automatic deslagging will engage if equipped.
- For grease testing, add a measured amount of oil to the influent. Observe effluent — when no visible oil remains (typically after ~1 minute of normal operation), separation is functioning correctly.
- For units with sewage lift pumps: continue filling until the lift chamber water level rises. The low-level float activates the pump; when the float drops, the pump stops. On the next fill cycle, the alternate pump activates.
- Test auxiliary functions (heating, flotation) individually during commissioning.
Maintenance Schedule
| Task | Frequency |
|---|---|
| Check and empty grease/debris collection barrels | Every 1–2 days |
| Open sludge discharge valve to remove sediment | Weekly (or as needed) |
| Comprehensive equipment inspection | Twice per year |
| Motor inspection (after ~5000 operating hours) | As required |
| Seal ring replacement | When wear is observed |
Applications
Chaodun grease separation equipment is designed for:
- Restaurant and hotel kitchens
- Cafeterias and food courts
- Food processing plants
- Residential kitchens
- Oil field and petrochemical wastewater (mineral oil treatment)
- Machining and coking industrial wastewater
Common Troubleshooting
| Symptom | Possible Cause | Solution |
|---|---|---|
| Lift pump runs but no water discharge | Motor rotation reversed | Swap motor wiring connections |
| Lift pump does not start | Float switch stuck or misaligned | Inspect and reposition float mechanism |
| Leakage at pipe connections | Loose fastener or degraded seal | Retighten; replace seal ring if needed |
| Control cabinet trips | Power setting mismatch | Adjust cabinet settings to match equipment rating |
Why Choose Chaodun
Chaodun’s grease separation equipment combines decades of engineering experience with practical, field-tested design. The fully enclosed 304 stainless steel body, dual-stage separation process, intelligent dual-pump control system, and low-noise operation make it a reliable choice for facilities that take wastewater compliance seriously. Whether you need a simple gravity-fed unit for a small kitchen or a fully automated hydraulic system for a large food processing plant, Chaodun has a configuration that fits.