Rjnyuk F. Reduction of a level of ecologically dangerous influence of municipal sludge on an environment

Object: reduction of a level of ecologically dangerous influence of municipal sewage sludge on an environment. The purpose: reduction of a level of ecologically dangerous influence of municipal sewage sludge on an environment by removal of heavy metals. Methods and equipment: the experimental and theoretical researches at laboratory-scale and commercial plants with use of modern measuring devices are carried out. Theoretical and practical results: the new method of extraction of heavy metals from municipal sewage sludge with the help of humic substances is developed, the opportunity of municipal sewage sludge filtering through precoat filtering layer, as which it is recommend to use coal-alkali reagent layer, is proved. Novelty: it is established, that humic substance have selective sorption ability with respect to heavy metals. A degree of introduction: By the results of researches it is developed and introduced the plant of mechanical dewatering of sludge with extraction of heavy metals with the help of humic substances on a Complex of plants for waste water treatment in Drogobych-town. Sphere of use: systems and plants of municipal sewage sludge dewatering.