Zero Liquid Discharge Systems
The ultimate sustainability solution for eliminating all liquid waste, ensuring total regulatory compliance, and maximizing fresh water recovery.
Complete Effluent Elimination
Our Zero Liquid Discharge (ZLD) plants represent the pinnacle of wastewater treatment. By integrating advanced thermal separation with membrane technologies, we reduce complex industrial effluent to clean water and dry solid waste.
- Multi-Effect Evaporators (MEE) for concentrated brine reduction.
- Mechanical Vapor Recompression (MVR) for high thermal efficiency.
- Agitated Thin Film Dryers (ATFD) for final sludge crystallization.
- Near 100% water recovery for immediate facility reuse.
Eco-Compliance & Cost Recovery
In highly regulated zones, ZLD is no longer optional. Our systems not only guarantee compliance with zero-discharge mandates but also generate ROI through recovered water and captured valuable by-products (like salts).
- Eliminates reliance on external water sources and disposal costs.
- Energy-optimized thermal designs lower steam and power consumption.
- Robust metallurgical design (Titanium, Duplex SS) prevents corrosion.
- Fully automated operation requires minimal manual supervision.
Industries Served
We install ZLD systems in sectors characterized by exceptionally high-TDS effluents and strict environmental oversight.
Textiles & Dyeing
Recovering process water and separating extreme dye and salt concentrations.
Distilleries
Treating highly potent spent wash for complete environmental compliance.
Chemical Mfg.
Isolating toxic chemicals and recovering valuable raw material salts.
Pharmaceuticals
Processing complex API effluents containing high organic and inorganic loads.
Our ZLD Methodology
1. RO Concentrate Intake
Receiving high-TDS reject water from the primary RO treatment stages.
2. Pre-Heating
Using waste heat recovery to raise effluent temperature, minimizing energy costs.
3. Thermal Evaporation
Processing through Multi-Effect Evaporators (MEE) to flash off pure water vapor.
4. Vapor Condensation
Condensing the vapor into high-purity distilled water ready for facility reuse.
5. Slurry Drying
Feeding the concentrated brine into Agitated Thin Film Dryers (ATFD).
6. Solid Waste Disposal
Collecting the final crystallized solid salts for approved landfill or industrial reuse.
Typical ZLD Capabilities
| Parameter | Industrial Challenge | S K Technologies Capability |
|---|---|---|
| Feed TDS Concentration | 40,000 to 100,000+ mg/L | Handled seamlessly by MEE/ATFD |
| Water Recovery Rate | Near complete recovery | 95% to 99% pure water recovered |
| Final Output Form | Liquid to Solid conversion | Dry, easily manageable crystallized solids |
| Metallurgy | High Corrosion Risk | Titanium, SS-316L, or Duplex Steel construction |
| Energy Source | High OPEX constraints | Compatible with Steam, Thermic Fluid, or Electricity |