DIGESTATE TREATMENT METHOD, FERTILIZER RESULTING FROM SAID METHOD, AND CORRESPONDING TREATMENT UNIT

摘要

The invention relates to a method and unit for treating a digestate extracted from a methanization plant digestion tank. According to the invention, such a method includes: a step for mixing at least the liquid fraction of said digestate with an essentially inorganic material that contains a substantial amount of clay, zeolite, and/or diatomaceous earth, for a duration long enough to allow said material to at least partially trap ionized ammonia nitrogen contained in said digestate; and a step for separating the solid fraction from said mixture.