COMPOSITE TREATMENT METHOD FOR FORMALDEHYDE-CONTAINING WASTE WATER
PROBLEM TO BE SOLVED: To provide a composite treatment method for formaldehyde-containing waste water, by which formaldehyde can be sufficiently decomposed and removed.SOLUTION: A composite treatment method for formaldehyde-containing waste water includes: a biological treatment step of biologically...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a composite treatment method for formaldehyde-containing waste water, by which formaldehyde can be sufficiently decomposed and removed.SOLUTION: A composite treatment method for formaldehyde-containing waste water includes: a biological treatment step of biologically treating formaldehyde-containing waste water; a separation step of separating microorganisms from the biologically treated water processed from the biological treatment step; and a chemical oxidation step of adding an oxidant to the separation treated water processed from the separation step to subject the formaldehyde to oxidation treatment. A UF film is preferably used in the separation step. As the oxidant, ozone and hydrogen peroxide are preferable. |
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