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centrifuge wastewater treatment
,liquid solid separation centrifuge
The Three Phase Decanter Centrifuge for Insect Oil Rendering continuously separates insect oil, aqueous liquid, and concentrated protein-rich solids from conditioned insect biomass slurry.
It is suitable for black soldier fly larvae, mealworms, crickets, and other insect-processing materials after crushing, heating, enzymatic treatment, or wet rendering.
- Black soldier fly larvae oil recovery
- Mealworm oil extraction
- Insect wet-rendering slurry separation
- Defatted insect protein production
- Insect paste and press-liquor treatment
- Oil recovery from processing residues
- Protein-rich solids concentration
- Insect process-water clarification
High Protein and Fine Solids
Protein particles, chitin, fiber, and cell debris can increase slurry viscosity and affect liquid clarity.
Stable Oil-Water Emulsion
Proteins and fine particles may stabilize the emulsion. Heating, enzymes, or suitable conditioning may improve separation.
Variable Oil Content
Oil content varies with insect species, growth stage, moisture, and upstream processing.
Temperature Control
Suitable heating reduces oil viscosity, but excessive temperature may affect oil and protein quality.
Hygienic Processing
Food-grade materials, sanitary seals, polished surfaces, and effective cleaning are required for sensitive applications.
Insect Oil Rendering Solution
Insect Biomass
→ Crushing / Heating
→ Feed Tank
→ Three Phase Decanter
→ Oil + Water + Solids
Recovered Oil → Filtration / Storage
Water Phase → Recovery / Treatment
Solids → Drying / Meal Production
Peony Can Provide
- Feed testing and selection
- Heated tank and feed pump
- Adjustable phase interface
- Food-grade wetted parts
- CIP cleaning
- PLC and dual-VFD control
How the Decanter Centrifuge Works
1. Conditioned Biomass Feeding
Conditioned insect slurry enters the rotating bowl.
Agitation maintains uniform temperature and solids concentration.
2. Solids Sedimentation
Centrifugal force moves protein solids, chitin, fiber, and dense particles toward the bowl wall.
A concentrated solids layer forms.
3. Oil-Water Separation
The lighter insect oil remains closer to the bowl center.
The heavier aqueous phase forms a separate outer liquid layer.
4. Continuous Solids Conveying
The screw conveyor transports settled solids toward the conical discharge end.
Protein-rich solids discharge continuously.
5. Three-Phase Discharge
Recovered oil and aqueous liquid leave through separate outlets.
The concentrated solids are discharged for drying or further processing.
| Model | Diameter (mm) | Length (mm) | Length-to-diameter rate | G force | Max solid discharge (m³/h) | Weight (kg) | Dimension (L*W*H) (mm) |
|---|---|---|---|---|---|---|---|
| PDC-10 | 250 | 1000 | 4 | 4080 | 0.4 | 1000 | 2410*800*1080 |
| PDC-12 | 4200 | 1350 | 4 | 3500 | 0.6 | 1200 | 2610*800*1080 |
| PDC-12 | 4200 | 1350 | 4.5 | 3180 | 1.2 | 1800 | 3495*840*1180 |
| PDC-18 | 4000 | 1600 | 4.5 | 3180 | 1.2 | 3200 | 3497*1020*1385 |
| PDC-18 | 450 | 2150 | 4 | 2500 | 2 | 3800 | 4447*1080*1385 |
| PDC-20 | 400 | 2250 | 4.5 | 2500 | 3.5 | 4000 | 4580*1140*1470 |
| PDC-21 | 530 | 2280 | 4.3 | 2500 | 5 | 5000 | 4924*1170*1540 |
| PDC-26 | 655 | 2800 | 4.3 | 2270 | 8 | 7000 | 4300*1900*1350 |
Main Advantages
Continuous Insect Oil Recovery
Separates oil continuously from wet-rendered insect biomass.
Improved Oil Yield
Adjustable speed and phase-interface control help reduce oil loss.
Protein-Rich Solids Recovery
Concentrates defatted solids for meal, protein, or other downstream products.
Reduced Downstream Load
Removes solids and oil before polishing, drying, or wastewater treatment.
Sanitary Configuration
Food-grade contact parts and CIP options support hygienic processing.
Please provide:
- Insect species and process stage
- Oil, water, and solids content
- Feed temperature and viscosity
- Particle size
- Required capacity
- Oil and solids quality targets
Can the centrifuge process whole insect larvae directly?
Normally no. The material should first be crushed, heated, or otherwise conditioned into a pumpable slurry.
Is heating required before separation?
Heating is usually helpful because it releases oil and reduces viscosity. The temperature should match the required oil and protein quality.
Can it separate oil from a protein-stabilized emulsion?
Possibly, but strong emulsions may require enzymatic treatment, controlled heating, or other conditioning before centrifugation.
Can the recovered solids be used for insect protein meal?
Potentially. Moisture, residual oil, microbial condition, chitin content, and final product requirements should be evaluated.
Does the recovered insect oil require further purification?
Usually yes. Fine filtration, polishing centrifugation, moisture removal, or deodorization may be required depending on the final use.
Peony supports insect-processing plants, feed producers, rendering companies, biotechnology projects, and engineering contractors.
Send us your insect type, slurry composition, temperature, capacity, and product-quality requirements. Our engineering team will recommend a suitable three-phase decanter centrifuge solution.
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