Treatment of Wastewater Containing Citric Acid and Triethanolamine.
Patent, Filed 24 Feb 92, patented 18 Aug 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
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Process for treating wastewater containing citric acid and triethanolamine and heavy metals by subjecting the wastewater to treatment with hydrogen peroxide and ultraviolet light UV and in the presence of ferrous ion as catalyst, to substantially decompose the citric acid and the triethanolamine. Wastewater generated from ship bilge cleaning and containing up to 10 citric acid or up to 5 triethanolamine, or mixtures thereof, can thus be subjected to UVH202 treatment with ferrous ion in a concentration thereof of about 20 to about 100 ppm, without forming chelates of iron and other heavy metals with citric acid or with triethanolamine, to decompose up to 90 or more of the citric acid and triethanolamine.
- Water Pollution and Control
- Civil Engineering