Integration of Wet Oxidation and Nanofiltration for Treatment of Recalcitrant Organics in Wastewater

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• 作者：Rolf Hellenbrand ; Dionissios Mantzavinos ; Ian S. Metcalfe ; and Andrew G. Livingston
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：1997
• 出版时间：December 1997
• 年：1997
• 卷：36
• 期：12
• 页码：5054 - 5062
• 全文大小：236K
• 年卷期：v.36,no.12(December 1997)
• ISSN：1520-5045

文摘

Wet oxidation and nanofiltration are employed in an integratedsystem for the treatment ofbioresistant industrial wastewaters. The partial oxidationproducts formed during a brief periodof pretreatment in a low pressure WO reactor are separated bynanofiltration, and largermolecules are recycled into the reactor where they undergo furtheroxidation. Experiments werecarried out with polyethylene glycol as a model compound in aqueoussolution, representingpolymer manufacture wastewater. The results demonstrate that byusing a combination of anoxidative and a separative step, a higher selectivity of the overallprocess toward partial oxidationcan be achieved. The permeate leaving the filtration step ismainly composed of short chainorganic acids which could be readily biodegraded in a subsequentbiological treatment, ordischarged if concentrations are low.