Sewage sludge composting

Sewage sludge is formed during mechanical, biological and chemical sewage treatment. Composition of the sewage sludge is very complicated; it is rich in micro- and macroelements, but the sludge can contain toxic compounds and pathogenic organisms. There exist a large variety of methods of neutralization of the sewage sludge. In the present work, the sewage sludge treatment methods are described, the special attention to non-industrial methods of neutralization of the sewage sludge.