Two Phase Decanter Centrifuge for Starch and Food Solids

Starch & Food Solids Separation Decanter Centrifuge is designed for continuous separation and recovery of starch residue, protein flocs, fruit pomace, and other fine food solids from food processing wastewater.

For most food solids separation applications, the recommended configuration is a two-phase decanter centrifuge because the main target is to separate solid residues from liquid wastewater while improving solids recovery and reducing downstream treatment load.

• Potato starch wastewater treatment
• Cassava starch wastewater treatment
• Corn deep processing wastewater
• Soybean product / soy protein wastewater
• Juice and beverage residue separation
• Dairy wastewater sludge treatment
• Beverage wastewater sludge treatment
• Soy sauce, vinegar and seasoning wastewater sludge treatment
• Sugar processing wastewater sludge treatment
• Food processing slurry clarification

Typical materials include starch residue, protein flocs, milk protein flocs, fruit pomace, fine suspended solids, organic sludge, fibers, seasoning wastewater sludge, sugar processing residue, and food processing wastewater.

• The feed usually contains solid residue + liquid, not oil-water-solid three phases.
• It can continuously recover starch residue, protein solids, and fruit pomace.
• It reduces solids loss and lowers the load on downstream wastewater treatment.

• If the feed contains recoverable oil or fat.
• If the material has high emulsified oil content.
• If the process needs simultaneous oil-water-solid separation.

1. Food processing wastewater or starch slurry enters the rotating bowl through the feed pipe.
2. Under centrifugal force, heavier starch residue, protein flocs, fibers, and fruit solids move outward.
3. The screw conveyor continuously pushes the separated solids toward the discharge end.
4. The clarified liquid phase is discharged through the liquid outlet.
5. The recovered solids can be collected for reuse, drying, animal feed, or further processing.

• Continuous automatic operation
• Higher recovery of starch residue and food solids
• Reduced fine residue loss
• Lower suspended solids in wastewater
• Compact footprint
• Suitable for sticky, fibrous, and fine food residues
• Wear protection and CIP cleaning options available
• Helps reduce downstream wastewater treatment cost

With stable feeding and proper pretreatment, this decanter centrifuge can typically achieve:

• 85–95% solids recovery rate
• 70–90% suspended solids reduction
• 25–45% cake solids content, depending on starch or pomace type
• 55–75% final cake moisture
• 30–60% residue volume reduction
• 10–30% lower solids loss compared with simple settling or screening
• 16–24 hours/day continuous operation

Actual results depend on feed composition, particle size, viscosity, screening effect, and operating settings. Pilot testing is recommended when the material changes frequently.

What is the difference between a two-phase and a three-phase decanter centrifuge?

A two-phase decanter separates solids and one liquid phase. A three-phase decanter separates solids, light liquid, and heavy liquid. For starch and food solids separation, a two-phase decanter is usually preferred because the main target is solid-liquid separation.

Is screening required before the decanter centrifuge?

Usually yes. Screening helps remove large fibers, stones, skins, or coarse impurities, reducing wear and improving stable feeding.

Can it recover useful starch or protein solids?

Yes. The machine can recover starch residue, protein flocs, and other food solids, depending on particle size and feed condition.

Can the machine support CIP cleaning?

Yes. CIP cleaning can be configured for food processing applications, especially when hygiene and frequent cleaning are required.

What information is needed for model selection?

Please provide feed material, capacity, solids content, particle size, temperature, viscosity, target recovery rate, target cake moisture, and cleaning requirements.

To recommend a suitable model, please share:

• Feed material name
• Capacity requirement
• Solids content
• Particle characteristics
• Temperature
• pH value
• Target solids recovery rate
• Target cake moisture
• CIP requirement
• Operating hours
• Material or wear protection requirements

Our engineering team can suggest a suitable two-phase decanter centrifuge configuration for your starch or food solids separation project.

Contact Peony for Partnership

If you have local customer channels or project resources in food processing, starch production, beverage manufacturing, dairy wastewater, or industrial wastewater treatment, Peony welcomes cooperation.

Send us your target market, customer type, project background, and cooperation proposal. Our team will evaluate the opportunity and provide technical and commercial support for suitable projects.