Paint Wastewater Treatment
For paint-laden wastewater from water-curtain spray booths and water-based paint operations — uses demulsification + flocculation + flotation + biological combined process for reuse or compliant discharge. MUSI Technology manufactures paint wastewater treatment systems in Changzhou, China, and supplies them together with the coating line as a single turnkey contract, with on-site commissioning and operator training.
Solves water pollution from water-based paint coating
Paint Wastewater Treatment Overview
A paint wastewater treatment system treats paint-laden water from water-curtain spray booths and water-based paint operations by demulsification, flocculation, flotation, biological treatment and filtration.
Built for 5-100 m³/day, with ≥85% COD removal and 60%-80% water reuse, under fully automatic PLC control.
Technical Specifications
The table below shows standard specifications. For custom requirements (non-standard size, specific heating method, robot integration, etc.), please contact MUSI engineers to confirm.
| Capacity | 5-100 m³/day |
|---|---|
| Process | Demulsification + flocculation + flotation + bio + filter |
| COD removal | ≥85% |
| Water reuse | 60%-80% |
| Sludge dewatering | Plate-frame filter press (≤80% moisture) |
| Control | Fully automatic PLC |
| Discharge standard | Per applicable national/regional regulations |
Budget and sizing: what does a paint wastewater treatment plant cost?
The plant is sized against three inputs: the effluent flow, where the water comes from (water-curtain booth, water-based paint operation or pretreatment rinses) and the discharge limit that applies at your site. Discharge to surface water needs a tighter plant than discharge to sewer, which is why the same flow has two budget columns. Indicative ex-works ranges published in MUSI's wastewater treatment process and cost guide:
| Effluent flow | Discharge to sewer | Discharge to surface water |
|---|---|---|
| Up to 1 m³/h | USD 15,000–30,000 | USD 25,000–45,000 |
| 1–3 m³/h | USD 25,000–50,000 | USD 40,000–80,000 |
| 3–8 m³/h | USD 45,000–90,000 | USD 80,000–160,000 |
| Item | Published figure |
|---|---|
| Sludge dewatering equipment | Add USD 8,000–35,000 |
| Running cost | Typically USD 0.8–2.5 per m³ treated for chemicals, plus sludge disposal at local rates |
| Standard treatment train | Demulsification, flocculation, flotation, biological treatment and filtration; plate-frame filter press for sludge (≤80% moisture) |
| Lead time | Standard configurations ship in 30–60 days |
| Warranty | 12 months full machine, 36 months critical components, up to 60 months structural parts |
Figures are indicative budgeting ranges for a correctly specified plant; the firm price is quoted per project once flow, water source and discharge limit are known.
Product Features
- Application-Specific Design — optimized for paint-laden wastewater from water-curtain spray booths and water-based paint operations, avoiding mismatched capacity or wrong sizing.
- Stable Operation — core components from imported or top-tier domestic brands (Siemens PLC, ABB drives, SEW motors). 100% factory testing pre-shipment. Brands are selected to the customer's specification and confirmed in the approved configuration.
- Easy to Operate & Maintain — user-friendly HMI, standardized fault codes, and routine maintenance manageable by your in-house technicians.
- Line Integration — seamlessly integrates with MUSI's pretreatment, curing, and environmental equipment for a complete production line.
Application References
This product has performed excellently in MUSI's customer installations. Selected references include:
- Vietnam — Tier-1 automotive parts supplier: 600,000 pcs/year coating line, 4+ years stable operation with no major faults
- UAE — Aluminum profile manufacturer: Replaced imported equipment, reduced energy use by 28%, saving ~$85K USD per year
- Mexico — Hardware exporter: Two-shift operation, daily output up from 5,000 to 12,000 pcs, 99.5%+ film quality pass rate
More references in our Case Studies section.
Service & Warranty
- Solution Design — free CAD line layout, process flow, and equipment list
- Warranty — 12 months full machine, 36 months on critical components (structural parts up to 60 months)
- Installation & Commissioning — engineers travel to your site for installation through production launch
- Operator Training — 3-5 days of free training for operators and maintenance technicians
- Response Time — 24-hour phone response, 72-hour on-site arrival (international)
What to send for a quotation
Treating paint-laden water from a water-curtain booth or a water-based paint plant? Send your daily effluent volume (m³/day), the source of the water and your local discharge limit, and we size the treatment route against them.
Frequently Asked Questions
QQuestions buyers ask before ordering
quotation · price · lead time · installation · warranty
What information do you need to prepare a quotation?
Send part drawings or photos, the largest part size and weight, the material, the required output per shift, the paint or powder type and number of colours, and the available floor space, ceiling height and power or gas supply. MUSI engineers reply within 24 hours; a recommended configuration and quotation follow once your part data is complete.
How much does this equipment cost?
Budget depends on part size, throughput and the level of automation. Indicative ex-works ranges are published in our paint wastewater treatment cost guide; a configured quotation is prepared from your part data.
What is the lead time?
Standard configurations ship in 30–60 days from contract signing and down payment; custom configurations take longer. The delivery date is fixed in the contract.
Do you install and train operators overseas?
Yes. MUSI engineers carry out on-site installation and commissioning and give 3–5 days of operator and maintenance training. MUSI has delivered 800+ coating lines to customers in 36 countries.
What warranty and after-sales support are included?
12 months full-machine warranty, 36 months on critical components and up to 60 months on structural parts. International customers get 24-hour phone response and 72-hour on-site arrival; spare parts ship from the Changzhou headquarters.
Can the environmental equipment be supplied with the line?
Yes. VOC treatment (RTO, RCO, activated carbon, zeolite rotor), dust collection and paint wastewater treatment are supplied with the coating line under one contract; MUSI has equipped 50+ coating facilities whose projects all passed local environmental compliance reviews.