Leachate treatment for residual-waste landfill

In Malaysia a waste management company operates a landfill for the disposal of residual materials from several waste management companies. Due to the wide range and high degree of contamination of the leachate of this landfill is very complex and difficult to treat. The high concentrations of salts and nitrogenous organic compounds are expecting to be increased due to the increase of waste production and can only be oxidized or eliminated by combining different process steps.

To comply with these requirements, the client was looking for a reliable plant constructor with a treatment concept suitable for this highly complex task. After confirmation of the treatment concept by laboratory testing, WEHRLE, as technology leader for the treatment of complex wastewater, was awarded to build the new leachate treatment plant. WEHRLE’s treatment solution includes a combination of three different process steps to purify this difficult wastewater:

To oxidize the high concentrations of organic compounds, such as nitrogen, a high-performance Membrane Bioreactor (MBR) based on the reliable BIOMEMBRAT® technology. A Reverse Osmosis system will be used for the separation of salts. The Reverse Osmosis concentrate produced will then be treated in an evaporator. The objective is to treat a total of 600 m³ per day for direct discharge into the nature.

Simon Götz, Area Manager for South-East Asia at WEHRLE: “This is definitely a challenging task. We at WEHRLE are proud that our expertise in treating such difficult wastewater has been recognized and we are looking forward to demonstrating our knowledge in this field.”