Method for absorption of toxic metals in ashes after thermal rendering harmless of sewage sludge

摘要

absorption of toxic metals in the ashes after a thermal disposal sewage sludge and the toxic metals in sparingly soluble compounds, which reduces the degree of leaching to surface waters and the possibility of subsequent use received it productas a fertilizer applying adsorbentu haloizytowego and parallel extraction process of dilute aqueous solution of inorganic acid and adding into seven parts by weight of thermal disposal sewage sludge containing 90% by weight of the dry weight of the d wu00f3ch parts by weight odu017celazionej zwietrzeliny haloizytowej with iron content below 3% by weight and addidentifying all five to seven parts by weight of an aqueous solution of sulphuric acid, 3% by weight.