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首页> 美国政府科技报告 >Effect of Ozonation on the Biodegradability and Adsorbability of Specific Organics to be Removed in the Biologically Activated Carbon (BAC) Process
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Effect of Ozonation on the Biodegradability and Adsorbability of Specific Organics to be Removed in the Biologically Activated Carbon (BAC) Process

机译：臭氧化对生物活性炭（BaC）过程中去除的特定有机物的生物降解性和吸附性的影响

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Phenol, 2,4, dinitrophenol, paranitrophenol, benzoic acid and ortho-, meta- and parachlorobenzoic acid were ozonated and changes in the adsorption isotherm were measured. Gilson respirometry studies were conducted using unozonated solutions of phenol and benzoic acid in order to measure the availability of sorbed substrate for biodegradation. Similar studies with ozonated solutions examined the effect of ozonation on the biodegradability and availability of sorbed substrate. Even at low ozone dosages, the adsorption isotherm, as measured by the total organic carbon of the mixture, was in most cases different than that of the parent compound; adsorption was decreased but there were also exceptions. Competitive adsorption between the residual parent sorbate and the low concentration(s) of by-products of ozonation was suggested but not proven. Sorbed substrate was shown to be available for biodegradation. Ozonation of phenol increased oxygen uptake substantially in flasks containing activated carbon, but not in flasks containing sand. In the absence of sorbed substrate, ozonation may not necessarily lead to increased oxygen uptake if the effect of ozonation is to lower the stoichiometric amount of oxygen required for biodegradation.

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