The Decanter Centrifuge for Paint Sludge Dewatering is designed for continuous paint-sludge thickening, pigment and resin solids separation, wastewater clarification, and filter-press feed preparation.

It is suitable for paint manufacturing, automotive spray booths, coating lines, equipment-cleaning wastewater, overspray treatment, and off-spec paint disposal.

• Automotive paint-booth sludge dewatering
• Water-based paint wastewater treatment
• Coating-line wash-water clarification
• Paint manufacturing wastewater treatment
• Overspray sludge concentration
• Tank and pipeline cleaning wastewater
• Powder-coating pretreatment sludge
• Off-spec paint treatment
• Filter press feed thickening
• Colored sludge volume reduction
• Process-water recovery
• Industrial coating wastewater pretreatment

Sticky Resin and Binder Content

Paint sludge may contain acrylic, epoxy, polyurethane, alkyd, latex, or other resins.

These materials can adhere to the bowl, conveyor, and discharge area. Stable feeding, suitable differential speed, and regular flushing help reduce deposits.

Fine and Stable Pigments

Fine pigments may remain dispersed in the liquid, especially in water-based paint wastewater.

pH adjustment, coagulation, and flocculation are often used before centrifugation to form larger, separable solids.

Changing Color and Composition

Wastewater properties may change during product switching and equipment cleaning.

An agitated equalization tank helps stabilize solids concentration, pH, viscosity, and feed flow.

Solvent and VOC Content

Solvent-based paint sludge may contain flammable liquids or vapors.

A sealed machine, explosion-proof electrical system, grounding, vapor collection, and nitrogen protection can be provided when required.

Heavy Metals and Dissolved Pollutants

Some paint streams may contain chromium, zinc, copper, lead, or other metal compounds.

The centrifuge removes suspended or precipitated solids but does not directly remove dissolved metals or dissolved organic pollutants.

Peony provides continuous separation solutions for paint-sludge thickening, wastewater clarification, sludge-volume reduction, and downstream filtration preparation.

Paint Booth / Coating Line / Equipment Cleaning
→ Wastewater Collection
→ Agitated Equalization Tank
→ pH Adjustment
→ Coagulation and Flocculation
→ Decanter Centrifuge
→ Thickened Paint Sludge
→ Filter Press / Dryer / Recovery / Disposal

Clarified Liquid
→ Intermediate Water Tank
→ DAF / Oxidation / Biological Treatment / UF / RO
→ Reuse or Discharge

Peony Can Provide

• Paint-sludge testing and centrifuge selection
• Agitated equalization tank
• Controlled feed pump
• pH adjustment and chemical dosing
• Adjustable bowl and differential speed
• Pond-depth and torque control
• Anti-stick internal configuration
• Automatic flushing or CIP
• Sealed and explosion-proof options
• Clarified-liquid collection system
• PLC and VFD automatic control
• Filter press and wastewater-treatment integration

Continuous Paint-Sludge Thickening

Continuously concentrates pigment and resin solids while reducing sludge volume.

Lower Filter Press Load

Pre-thickening reduces hydraulic load and provides a more stable filter press feed.

Anti-Stick Configuration

Flushing connections and suitable internal surfaces help reduce resin and sludge deposits.

Improved Downstream Treatment

Removing suspended paint solids reduces the load on flotation, oxidation, biological, and membrane systems.

Solvent-Safe Options

Sealed, explosion-proof, and nitrogen-protected configurations are available for suitable solvent-containing streams.

Please provide:

• Paint type and water/solvent base
• Solids concentration, particle size, density, and viscosity
• Flow rate, temperature, and pH
• Resin, solvent, VOC, and heavy-metal content
• Required sludge concentration and liquid quality
• Downstream treatment and explosion-proof requirements

Peony welcomes distributor and agent cooperation with automotive plants, paint manufacturers, coating lines, spray-booth contractors, wastewater-treatment companies, and industrial separation partners.

We support partners with sludge testing, centrifuge selection, chemical-conditioning design, anti-stick configuration, solvent-safe design, filter press integration, commissioning, spare parts, and after-sales service.

Send us your paint sludge information, including paint type, solids concentration, viscosity, solvent content, required capacity, liquid-quality target, and downstream treatment arrangement. Our engineering team will recommend a suitable decanter centrifuge solution for your paint sludge dewatering process.