Issue contents | Previous abstract  | Next abstract 

Water Practice & Technology © IWA Publishing 2007  |  doi10.2166/wpt.2007.003

Composting of Sewage Sludge of Moscow Waste Water Treatment Plants Using Recycling Filler

D.A. Danilovich, M.N. Kozlov, V.I. Sklyar, Yu.A. Nikolaev, N.M. Shchegolkova, A.Ya. Vanyushina, V.A. Grachev

This work demonstrates a possibility of composting of municipal waste waters sludge (WWS) digested during 5-7 days, of the Kuryanovo waste water treatment plants (the city of Moscow) without the use of traditional organic additives – sawdust, peat, thatch. As a recycling filler (repeatedly used), enhancing the porosity of the composted mixture, ribbed polyethylene spheres (Ø=8 cm) and wood chips (having dimension of 5-10 cm) were used. Composting was performed efficiently in both cases, however, the use of wood ships had technological and economical advantages. The process of composting was carried out during 2-4 weeks and was composed of classical phases of active heating (a rate of 0.2-0.3??/h was obtained), maintaining of maximum temperature during 1-2 days, and cooling down to the ambient temperature. During the course of composting, a product was obtained, having attractive organoleptic properties, suitable for application in municipal laying-out of greenery.

Keywords: composting, municipal wastewater sludge, recycling filler, wood chips

Full text PDF