Method for treating waste water containing oxygen-containing compound having phenolic hydroxyl group of carbonyl group
AssigneeSumitomo Chemical Company, Limited
InventorKenji Itoh
Life of this patent
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Abstract
Disclosed is a method for processing a waste water containing an oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group, which comprises the following first step and second step. First step: An alkaline agent is added into a waste water containing an oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group so that the waste water has a pH of not less than 10. Second step: The waste water to which the alkaline agent is added in the first step is distilled for separating a waste liquid in which the oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group is concentrated.
Claims3
A method for treating a wastewater containing oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group, which comprises the following steps:
- First step:
- a step of adding an alkali agent to the wastewater containing the oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group to control a pH of the wastewater to 10 or more;
- and
- Second step:
- a step of separating a discharge in which the oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group is concentrated through distillation of the wastewater to which the alkali agent has been added.
Dependencies are inferred from the claim text.