Landfill leachate treatment

Landfill leachate, in collectors, landfills and incinerators, is the outcome of percolation and leaching phenomena from stockpiled waste. The leachate produced by the waste in the landfill is an extremely pollutant effluent: it contains a significant percentage of ammonia, COD, heavy metals and salinity (chlorides and sulfates). It is therefore hard to treat and requires high effective treatment processes to comply with the very strict limits for discharging operations. Our wastewater evaporation technologies for the landfill leachate water treatment are an effective solution in treating highly polluted, concentrated landfill waste, very difficult to treat by traditional processes.

Landfill leachate treatment through evaporation technologies

Leachate water treatment through evaporation technologies and membranes is based on the separation of water from a water-based solution. The outcomes of the leachate treatment plant are:

condensate or permeate: the main stream representing the majority of the original flowrate containing water.
concentrate: the smaller flow containing the majority of the pollutants; it can be sent to further super-concentration steps, to disposal or to incineration/inertization.

The solutions applied in the landfill leachate treatments can be used also for waste coming out from:

wastewater collector
digestate
gas scrubbers
composting

EVALED® leachate treatment system: a technological solution for leachate disposal

Amongst leachate treatment options, EVALED® evaporators are a technological solution which allows to exploit the biogas cogeneration for the full or partial power supply of the plant within the limits of the environmental regulations.

EVALED® leachate wastewater treatment processes are the solution for:

Leachate and industrial wastewater volumes reduction
Reducing the relevant costs for thermal energy and leachate disposal
Adaptability to the incoming effluent changes
Biogas cogeneration exploitation
Compliance with discharge regulations

The evaporation technologies for this solution are the forced circulation EVALED RV evaporators and vacuum EVALED AC evaporators powered by hot/cold water coming from cogeneration.

Application & products

COLLECTORS

Application	Evaled	ADDED VALUE
Wastewater from Chemical industry	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Wastewater from Pharma industry	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Wastewater from Oil& Gas	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Wastewater from Electroplating industry	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Wastewater from Landfill or Incineration	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Gas scrubber blow-down	RV, AC	Water recovery, disposal cost reduction
Exhausted oil emulsions	RV , AC	Oil recovery, water reuse, disposal cost reduction
Na2SO4 neutralized WW (car batteries recycling)	RV , AC	Salt recovery, disposal cost reduction

LANDFILL

Application	Evaled	ADDED VALUE
Industrial landfill leachate	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Municipal landfill leachate	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Compost leachate	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Polluted rain water	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction

INCINERATION PLANTS

Application	Evaled	ADDED VALUE
Gas scrubber blow-down	RV, AC	Water recovery, disposal cost reduction
Ash storage leachate	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction
Polluted rain water	RV, AC	CO ₂ reduction, adaptability to effluents, disposal cost reduction