Landfill leachate is one of the most challenging wastewaters to treat due to its variable composition and toxic compounds. Learn about effective treatment technologies.

Leachate Characteristics

Leachate composition varies by age:

Young Leachate (less than 5 years)

• High BOD/COD ratio (0.4-0.8)
• High VFA content
• Readily biodegradable
• Lower ammonia levels

Old Leachate (more than 10 years)

• Low BOD/COD ratio (less than 0.1)
• High ammonia (500-2000 mg/L)
• Refractory organics
• Difficult to biodegrade

Treatment Technologies

Biological Treatment

• MBR for young leachate
• Anammox for ammonia removal
• Moving bed biofilm reactors

Physical-Chemical

• Advanced oxidation (O3, H2O2, UV)
• Membrane processes (NF, RO)
• Activated carbon adsorption
• Air stripping for ammonia

ZLD Solutions

Zero liquid discharge for complete treatment:

• RO concentrate evaporation
• Crystallizer for salt recovery

Consulting on landfill leachate treatment? Our team has experience with leachate projects worldwide.

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