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SS304/316L Multiple Effect Evaporation System for Dye Wastewater — Ammonium Sulfate Recovery
Hanpu designs Multiple Effect Evaporation (MEE) plants in SS304/SS316L specifically for dye & dye-intermediate wastewater. The system concentrates sulfate-rich streams and integrates vacuum crystallization to recover ammonium sulfate (AS) as a reusable salt, cutting disposal cost and enabling ZLD/near-ZLD compliance with optimized OPEX.
Engineered Materials
Product-wetted parts in SS316L for corrosive, colored liquors; structural and utility lines in SS304 for value optimization. Elastomers and gaskets matched to pH and solvent exposure.
Color & Organics Tolerance
Stable low-ΔT operation and high-shear distribution reduce fouling; optional decolorization or carbon polishing can be integrated upstream.
Ammonium Sulfate Payback
Concentrated mother liquor feeds the vacuum crystallizer to produce marketable AS crystals with controlled particle size for storage and sale.
Process Overview
Feed Conditioning: Screening/filtration, pH trim, anti-scalant, and optional defoamer to stabilize dye effluent.
Multi-Effect Evaporation: Live steam heats Effect-1; generated vapors cascade to downstream effects running at progressively lower pressure and temperature.
Concentration Control: Online density/conductivity governs recycle/discharge; clean condensate is recovered for reuse or polishing.
Vacuum Crystallization (AS): Concentrate is cooled under vacuum to crystallize ammonium sulfate; crystals are separated by centrifuge and dried.
Utilities & Emissions: Surface condenser with vacuum package; non-condensables safely vented; minimal cooling water through heat recovery.
Technical Snapshot (Illustrative)
Item
Typical Range / Note
Evaporation capacity
3–20 t/h per train (customized to plant load)
Steam economy
~3.0–4.0 kg water/kg steam (higher with TVR/MVR add-ons)
Boiling temperature (last effect)
~45–60 °C under vacuum to limit scaling & color set
Integrated AS crystallizer, centrifuge and dryer (optional modules).
Commissioning, performance testing to guaranteed KPIs, and operator training.
Applications
Dye & dye-intermediate wastewater concentration with ammonium sulfate recovery.
RO reject and high-TDS mixed effluents in chemical processing zones.
Integration with biological/advanced oxidation for color & COD polishing.
About Hanpu
Hanpu delivers energy-saving MEE/MVR systems in stainless steel for challenging industrial effluents. Our EPC approach shortens schedules, stabilizes lifetime OPEX, and provides reliable compliance for chemical, dye, pharmaceutical, and mineral processing clients worldwide.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Ecer Certification：
Verified Supplier
Jiangsu Hanpu Mechanical Technology Co., Ltd. is a project engineering company jointly established by Jiangsu Zhongyi Environmental Technology Co., Ltd., FERREO A/S in Denmark, Shanghai Jiaotong University and Nanjing Kingreat Machinery Co., Ltd. The company's production base is located in the H... Jiangsu Hanpu Mechanical Technology Co., Ltd. is a project engineering company jointly established by Jiangsu Zhongyi Environmental Technology Co., Ltd., FERREO A/S in Denmark, Shanghai Jiaotong University and Nanjing Kingreat Machinery Co., Ltd. The company's production base is located in the H...
