Two Phase Decanter Centrifuge for Landfill Leachate

Landfill Leachate & Hazardous Waste Sludge Decanter is designed for continuous solid-liquid separation of chemical sludge and biochemical sludge generated from landfill leachate, hazardous waste treatment, incineration wastewater, and medical wastewater systems.

For most landfill leachate and hazardous sludge applications, the recommended configuration is a two-phase decanter centrifuge because the main target is to separate solid sludge from wastewater, reduce sludge volume, and lower disposal risk.

• Landfill leachate chemical sludge
• Landfill leachate biochemical sludge
• Incineration plant wastewater sludge
• Hazardous waste neutralization sludge
• Medical wastewater sludge
• High-salt wastewater treatment sludge

Typical materials include chemical sludge, biochemical sludge, flocculated solids, inorganic precipitates, organic sludge, and high-salt wastewater sludge.

• The feed mainly contains sludge solids + wastewater.
• It is suitable for sludge after neutralization and flocculation.
• It helps reduce sludge volume and improve hazardous sludge handling safety.

• If the feed contains oil, grease, or floating scum.
• If the sludge is highly abrasive or contains hard particles.
• If the liquid phase requires very high clarity, downstream filtration may be needed.

1. Landfill leachate sludge or hazardous wastewater sludge enters the rotating bowl.
2. Under centrifugal force, heavier sludge particles move outward and form a sediment layer.
3. The screw conveyor continuously pushes the separated sludge cake toward the discharge end.
4. The clarified liquid phase is discharged through the liquid outlet.
5. The sludge cake is collected for stabilization, drying, incineration, or hazardous waste disposal.

• Continuous automatic operation
• Reduced sludge storage volume
• Lower hazardous sludge disposal cost
• Suitable for high-salt and high-ammonia-nitrogen wastewater sludge
• Optional anti-corrosion material design
• More stable sludge cake discharge
• Reduced risk in sludge handling and transport

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

• 75–95% solid capture rate
• 60–90% suspended solids reduction
• 18–35% cake solids content
• 65–82% final cake moisture
• 30–60% sludge volume reduction
• 20–45% lower sludge handling / disposal load
• 16–24 hours/day continuous operation

Actual results depend on sludge composition, salt content, ammonia nitrogen level, pH, polymer dosing, floc strength, and corrosion conditions.

Is this machine suitable for landfill leachate sludge?

Yes. It is suitable for chemical sludge and biochemical sludge from landfill leachate treatment systems.

Can it handle high-salt sludge?

Yes, but material selection is important. For high-salt and corrosive sludge, anti-corrosion materials should be considered.

Is polymer dosing required?

Usually yes. Polymer dosing helps improve floc formation, solid capture, and cake dryness.

Can the liquid phase be discharged directly?

Not usually. The clarified liquid normally returns to the wastewater treatment system for further treatment.

Please provide feed material, capacity, solids content, pH, salt content, ammonia nitrogen level, temperature, polymer dosing condition, and target cake moisture.

To recommend a suitable model, please share:

• Feed material name
• Capacity requirement
• Solids content
• Salt content
• Ammonia nitrogen level
• pH value
• Temperature
• Target cake moisture
• Polymer dosing condition
• Corrosion requirement
• Operating hours
• Site voltage or control preference

Our engineering team can suggest a suitable two-phase decanter centrifuge configuration for your landfill leachate or hazardous waste sludge dewatering project.

If you have local project resources or customer channels in wastewater treatment, hazardous waste treatment, landfill leachate, or sludge dewatering, please contact Peony.

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.