Biogas and compost from liquid waste
What about solutions?
In general, these effluents hold heavy metals, chlorides, sulfates and other substances as nitrogen, nitrates, ammoniac, boron. Their treatment requires the combination of different technologies, as evaporation, membrane filtration, ion exchange.
Leachate with a high COD content can be treated with biological technology UASB, able to yield biogas thanks to process of organic substances digestion.
From digestate produced from anaerobic treatment of organic fraction of waste, furthermore, can be obtained compost and by-products usable as fertilizers.