Method of elimination of the heavy metal ions mobile fraction from the sewage sludge

摘要

The method for elimination of mobile fraction of heavy metal ions in sewage sludge is characterised in that the sewage sludge after the methane fermentation is mixed with natural milled zeolite in weight ratio of zeolite of 2-5% of contents of dry mass of fermented sewage sludge and the so obtained mixture is dried until the water content in the mixture is no higher than 20% by weight.