Method for treating wastewater and wastewater sludge using a percarboxylic acid
AssigneeKemira Oyj
InventorsJames Currie Allen, Tafadzwa Mariga
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Abstract
The present invention provides a method for treating wastewater or wastewater sludge, in which method percarboxylic acid is used as an odor controlling agent and/or corrosion controlling agent.
Claims15
A method for treating wastewater and/or wastewater sludge, comprising using a treating chemical comprising percarboxylic acid as an odor controlling agent and/or corrosion controlling agent.
The method according to claim 4, wherein an active concentration of the performic acid is at least 8%, at least 9%, at least 10%, or in a range of 8-14%, calculated as weight to volume.
The method according to 5, wherein the treating chemical is added continuously to the wastewater or wastewater sludge stream in at least one process location.
Use of a treating chemical comprising percarboxylic acid, performic acid, peracetic acid or a combination thereof, in odor control of the wastewater or wastewater sludge.
The use of the treating chemical comprising percarboxylic acid, performic acid, peracetic acid or a combination thereof, in corrosion control of wastewater or wastewater sludge collection and treatment processes.
Dependencies are inferred from the claim text.