CE Multiple Effect Evaporator Plant for Lithium Battery Wastewater — Sodium Chloride Recovery
Build a reliable CE-certified Multiple Effect Evaporation (MEE) plant tailored to lithium battery wastewater. Hanpu’s system concentrates high-salinity brine, enables NaCl crystallization and recovery, and reduces fresh steam demand via staged heat reuse. Optimized for EV supply-chain effluents (Li/Na brines, cathode washing liquor, RO reject), our MEE solution helps you reach ZLD/near-ZLD with predictable OPEX and audit-ready documentation.
Client’s Facility — On-Site Views
Purpose-Built for Battery Brines
Handles high TDS, surfactants, and trace organics common in cathode/anode manufacturing wastewater; stable operation at low ΔT to protect heat-sensitive species.
Sodium Chloride Product Value
Concentrated brine feeds a vacuum crystallizer to produce saleable or reusable NaCl crystals, lowering disposal cost and improving sustainability metrics.
Energy-Saving Multi-Effect Design
Vapor from each effect heats the next effect (E1→E2→E3→E4*), driving down steam use; optional TVR/MVR upgrades further cut utilities and carbon intensity.
Process Overview
- Pre-Treatment Interface: Equalization/filtration and anti-scalant dosing (as needed) to stabilize feed quality.
- Multi-Effect Evaporation: Live steam heats Effect-1; generated vapors cascade to downstream effects operating at lower pressure/temperature.
- Brine Management: Online density/conductivity triggers recycle or discharge to NaCl crystallizer; clean condensate is recovered for reuse.
- Vacuum & Non-condensables: Surface condenser with vacuum package ensures low boiling temps; non-condensables are safely vented.
- Crystal Handling: Downstream centrifuge/dryer (optional) delivers consistent bulk density and moisture for storage or sale.
Technical Snapshot (Illustrative)
| Item | Typical Range / Note |
| Evaporation capacity | 1–20 t/h (custom sizing for battery wastewater line rate) |
| Steam economy | ~3.0–4.0 kg water/kg steam (higher with TVR/MVR) |
| Operating temperature (last effect) | ~45–60 °C under vacuum to limit scaling and fouling |
| Materials of construction | SS316L/duplex on product side; elastomers & gaskets matched to chemistry |
| Controls & automation | PLC/HMI with historian; density or refractometer-based set-points; remote support |
| NaCl product quality | Designed for high-purity sodium chloride crystallization (vacuum crystallizer option) |
| Utilities | Low raw steam, low cooling water via heat recovery; power sized to pumps/vacuum |
| Clean-in-Place | CIP skid with validated recipes; anti-scaling strategy based on pilot data |
CE Compliance & Quality Assurance
Our plants are delivered with CE marking and traceable documentation—risk assessment, PED/pressure part dossiers, FAT/SAT protocols, and operating manuals—supporting smooth environmental and EHS audits.
What You Receive
- Process design package: PFD/P&ID, heat & mass balance, utility list, control narrative.
- Skid-based effects, separators, surface condenser, vacuum system, pumps, and instrumentation.
- Integration to NaCl crystallization, centrifugation, and drying (optional modules).
- Commissioning, performance testing against guaranteed KPIs, and operator training.
Use Cases in the EV Supply Chain
- Lithium battery plant wastewater concentration and sodium chloride recovery.
- RO reject brine upgrade for ZLD/near-ZLD programs.
- Cathode/anode line rinses, pickling/neutralization liquors, and solvent-bearing streams (after pre-treatment).
About Hanpu
Hanpu designs and delivers energy-efficient MEE/MVR systems for high-salinity wastewater, battery manufacturing, chemicals, and minerals. Our EPC approach shortens schedules, improves lifetime OPEX, and provides reliable compliance for modern lithium battery ecosystems.
