Landfill Leachate Treatment and Recovery

Leachate Recycling using Evaporation

1. Leachate is fed, along with acid, to the R-Vap Mechanical Vapor Recompression Evaporator.

2. In the R-Vap unit the leachate is concentrated producing distilled water (~95%) and a concentrate (~5%).

3. The concentrate can be sprayed back onto the landfill.

4. Distillate can be discharged directly to the sewer without further treatment.

Using LFG to Power Compressor

1. Landfill gas (LFG) is used to power a diesel engine.

2. Diesel engine rotates the shaft for the steam compressor on the R-Vap unit.

Benefits

• Low cost
  • Recovery costs for the leachate using electricity is ~$0.01 per gallon.
• Can use YOUR energy source
  • Compressor can be driven by diesel engine using LFG or an electric motor. (R-Vap unit typically uses an electric motor to drive the compressor.)
• No harmful dust
  • Concentrate that is sprayed back onto the landfill is a liquid. Therefore, there are no dust particles that can be affected by the wind.