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USE OF ELECTROCHEMICAL OXIDATION FOR TREATMENT OF PER-AND POLYFLUOROALKYL SUBSTANCES (PFAS) IN WASTE GENERATED FROM SORBENT AND RESIN REGENERATION PROCESSES
USE OF ELECTROCHEMICAL OXIDATION FOR TREATMENT OF PER-AND POLYFLUOROALKYL SUBSTANCES (PFAS) IN WASTE GENERATED FROM SORBENT AND RESIN REGENERATION PROCESSES
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机译:电化学氧化法处理吸附剂和树脂再生过程中产生的全氟和多氟烷基物质(PFAS)
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摘要
Perfluorinated and polyfluorinated compounds in an effluent stream are destroyed by means of electro-oxidation. Although electro-oxidation can be used to directly treat effluent, a more efficient use is to pre-concentrate applicable pollutants with filters or sorbents. Concentrated perfluorinated and polyfluorinated compounds are removed from the filter or sorbent with a regenerant solution and treated by electro-oxidation. A current density of 0.5 mA/cm2 or 1 mA/cm2 effectively reduces the level of perfluorinated contaminants within 1-3 hr. using a titanium electrode. This allows both the regenerant and filter or sorbent to be reused and greatly reduces the amount of material that must be treated as hazardous waste.
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机译:流出物流中的全氟化和多氟化化合物通过电氧化被破坏。尽管电氧化可用于直接处理废水,但更有效的用途是使用过滤器或吸附剂预浓缩适用的污染物。用再生剂溶液从过滤器或吸附剂中去除浓缩的全氟化和多氟化化合物,并通过电氧化处理。 0.5 mA / cm 2 Sup>或1 mA / cm 2 Sup>的电流密度可在1-3小时内有效降低全氟化污染物的水平。使用钛电极。这使得再生剂和过滤器或吸附剂都可以重复使用,并大大减少了必须作为危险废物处理的材料量。
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