Abstract:

The production, damage and treatment of municipal sewage sludge in Guangzhou city are discussed in detail. In combination with the standardization of sludge treatment in China, 5 processing techniques are discussed. According to the principle of reducing cost, saving energy and reducing consumption, current combination technology of Guangzhou and the economic performance of the routes are compared. It is concluded that the combined technical route of sludge treatment and disposal in Guangzhou is “concentration+mechanical dehydration +thermal dry→off-site or in-site disposal”, and the unit investment cost of sludge drying is 1,900,000 yuan /tDS, the total cost of operation is 19,660 yuan.The technical route is expected to become the standardized route for Guangzhou municipal sludge treatment and disposal.

Key words: sludge; sludge disposal; sludge drying; economic analysis