Distillation Systems
Thermal separation technology for wastewater concentration, solvent recovery, and high-purity water production
Overview
What is Distillation Systems?
Distillation systems utilize thermal energy to separate water from dissolved contaminants, producing high-purity distillate and concentrated reject streams. This proven separation technology is particularly effective for treating wastewater containing volatile organic compounds, high TDS levels, or valuable solvents that can be recovered and reused.
The distillation process involves heating wastewater to vaporize water or specific components, then condensing the vapors to produce purified liquid. Multiple effect distillation (MED), vapor compression (VC), and vacuum distillation configurations offer energy-efficient solutions tailored to different wastewater characteristics and treatment objectives.
Spans Envirotech's distillation systems incorporate heat recovery, vapor compression, and advanced materials to minimize energy consumption while achieving exceptional separation efficiency. Our solutions are ideal for industries requiring solvent recovery, zero liquid discharge compliance, or production of high-quality water for process reuse.
Process
Distillation Process
Feed Preheating
Wastewater is preheated using waste heat from condensing vapors, improving thermal efficiency. Scaling inhibitors may be added to prevent fouling on heat transfer surfaces.
Evaporation
Heated wastewater enters evaporation chambers where reduced pressure or applied heat causes water to vaporize, leaving dissolved solids and non-volatile compounds behind.
Vapor Separation
Water vapor is separated from the concentrate. Mist eliminators remove entrained droplets to prevent carryover of contaminants into the distillate.
Condensation
Purified vapor is condensed back to liquid in heat exchangers, producing high-quality distillate water suitable for reuse or discharge.
Concentrate Handling
Concentrated brine or residue is continuously or periodically removed for further treatment, disposal, or crystallization for zero liquid discharge applications.
Benefits
Key Advantages
- Produces high-purity distillate water suitable for process reuse or discharge
- Effective for high TDS wastewater (up to 300,000 mg/L)
- Enables valuable solvent recovery reducing raw material costs
- Achieves significant volume reduction (70-95%) lowering disposal costs
- Minimal chemical addition required compared to membrane processes
- Handles temperature-sensitive materials with vacuum distillation
- Integrates with zero liquid discharge systems for total water recovery
Applications
Industries & Use Cases
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