Method of disposing of excess sludge

Details Method of disposing of excess sludge Method of disposing of excess sludge

D - Textiles, Paper

21

C

D21C 11/00 (2006.01) C02F 1/52 (2006.01) C02F 1/66 (2006.01) C02F 3/12 (2006.01) C02F 9/00 (2006.01) C02F 11/06 (2006.01)

Patent

CA 2152618

The invention concerns a method of incinerating excess sludge from biological waste-water-treatment plants, in particular sludges arising from the manufacture of paper or paper pulp, the treatment plant preferably using the magnesium fusion process. Before incineration (61), the excess sludge (85, 9) is neutralized (4) with the same base as used in the pulp process, and the dust (62) entrained by the combustion gases is precipitated to recover the base.

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