Zero Liquid Discharge systems - waste water recycling

The advantages of closed waste water systems:

• - reduction of water and sewage costs
• - reduction of water consumption
• - the most environmentally friendly water management solution in the production sector

Closed circuits can be designed as:

• Partially closed
  - recycles part of the waste water and thus reduces the production of discharged waste water 
• Completely closed – Zero Liquid Discharge
  - all waste water is recycled back into the production process and no waste water is discharged

For the implementation of closed waste water systems, the following is used:

• - adsorption on ion exchange resins
• - separation of substances by membrane processes
• - distillation using vacuum evaporators