Process for the removal and suppression of dissolved hydrogen sulfide and other malodorous compounds and reduction of acidity in liquid and sludge wastewater systems
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United States of America Patent
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Sep 7, 1999
Grant Date -
N/A
app pub date -
Aug 20, 1997
filing date -
Aug 20, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Nuisance concentrations of hydrogen sulfide and other malodorous compounds are controlled in liquid and sludge waste systems by adding alkaline iron. The process removes immediate sulfide and suppresses the formation of further nuisance sulfide with a single application. As the sulfide and other malodors are being mitigated in this process, alkalinity is added to the waste as a reaction by-product, which acts to increase the waste pH, decreasing corrosivity and promoting biological treatability and purification of the waste.
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