biological sludge मीनिंग इन हिंदी

Anaerobic wastewater treatment processes ( EGSB ) are also widely applied in the treatment of industrial wastewaters and biological sludge.
These wastes can include mixed sludge, mineral slurry, dust sediment, selected coal washing mud, biological sludge, primary sludge, and straw, wood or waste paper pulp.
Sewage is produced by all human communities and is often left to compost naturally or is treated using processes that separate solid materials by settlement and then convert soluble contaminants into biological sludge and into gases such as carbon dioxide or methane.