Procedure for purifying effluent waters, particularly those produced in wood-processing industry
AssigneeEnso-Gutzeit Oy
InventorsRisto Hakulinen, Marja Salkinoja-Salonen, Jorma Rasanen, Juhani Kyytsonen
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Abstract
The present invention concerns a procedure for purifying in a fluidized bed reactor (1) effluent waters, particularly those produced in the wood-processing industry. The reactor contains, in addition to fluidized, finely divided particles (7), also agglomerated fibre material (8) serving the purpose of reducing the quantity of the floating particles required. The fibre material may for instance be cellulose, introduced in the reactor together with the effluent water to be treated and which is converted into agglomerates in the reactor.
Claims5
A method for purifying effluent water comprising treating the effluent water in a reactor containing a fluidized bed of finely divided particles and a bed of agglomerated fibrous material which serve as a fixing base for bacteria which decompose the impurities in the water, wherein the bed of agglomerated fibrous material constitutes a separate layer above the fluidized bed.
Dependencies are inferred from the claim text.