I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The alkaline stage uses sodium hypochlorite as an oxidant. The particular application involves emissions from the solids management activities at the treatment plant. That is the odorous air sources do not include the liquid treatment parts of the plat. The plant does not have anaerobid digesters. The odorous air results from management of screenings and processing of screenings and sludge from primary and secondary clarifiers.
I know that the use of hypochlorous acid in disnfection of water and wastewater leads to the formation of various halogenated disinfection byproducts that have toxicological concerns. This gives me concern about the use of hypochlorous acid in the odor control scrubber.
There is technical data indicating the efficiency of HOCl in oxidixing reduced odor compounds. But I have not been able to find any information regarding the presence or absence of byproducts of this oxidation process, particularly species such as haloacetics, halates, halites, and haloforms.
Is anybody aware of any information on this topic?
Dear Stephen Nelson many thanks for raising this very interesting technical question. In fact, compounds like HOCl and ClO2 are strong oxidizing agents and highly reactive compounds. Thus it is not surprising that in contact with organic material volatile chlorinated organic compounds can be formed.
For more detailed information on this topic please have a look at the following relevant article
Wet Scrubber Analysis of Volatile Organic Compound Removal in the Rendering Industry
Article Wet Scrubber Analysis of Volatile Organic Compound Removal i...
This article is freely available as public full text on ResearchGate. In the course of this study the chlorinated hydrocarbon derivative methanesulfonyl chloride has been identified in the outlet of a high-intensity wet scrubber, and various volatile organic compounds (VOCs) as well as chlorinated compounds have been identified in the scrubbing solution.
Dear Stephen Nelson many thanks for raising this very interesting technical question. In fact, compounds like HOCl and ClO2 are strong oxidizing agents and highly reactive compounds. Thus it is not surprising that in contact with organic material volatile chlorinated organic compounds can be formed.
For more detailed information on this topic please have a look at the following relevant article
Wet Scrubber Analysis of Volatile Organic Compound Removal in the Rendering Industry
Article Wet Scrubber Analysis of Volatile Organic Compound Removal i...
This article is freely available as public full text on ResearchGate. In the course of this study the chlorinated hydrocarbon derivative methanesulfonyl chloride has been identified in the outlet of a high-intensity wet scrubber, and various volatile organic compounds (VOCs) as well as chlorinated compounds have been identified in the scrubbing solution.
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