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Journal AWWA - Abiotic and Biotic Perchlorate Removal in an Activated Carbon Filter AWWA期刊-活性炭过滤器中的非生物和生物高氯酸盐去除
发布日期: 2002-02-01
高氯酸盐是一种健康问题,因为 它会扰乱甲状腺对激素的使用 碘在代谢产物中的作用 激素,最终可能会阻碍 正常的身体生长和发育。 因为高氯酸盐污染了饮用水 直到最近,水才成为人们关注的焦点, 目前还没有一项技术被确定为 高氯酸盐的最佳处理工艺 移动 这项研究评估了活性炭的使用 碳过滤降低高氯酸盐 使用常规接触的浓度 没有产生集中的 高氯酸盐废水。非生物颗粒 活性炭过滤实验 证明高氯酸盐已被去除 通过离子交换而不是化学还原。 水中高氯酸盐的生物还原 低微克每升浓度 是用生物活性炭实现的 (BAC)过滤。批量实验验证 生物还原与生物降解 BAC过滤器中的微生物 高氯酸盐变成氯酸盐。 研究结果表明,BAC过滤 具有非常高的成本效益和 有效去除高氯酸盐。之前 BAC过滤可应用于完全过滤- 规模 然而,高氯酸盐修复 流程必须针对以下方面进行优化: 操作条件和水质特征。 本文描述了这些发现 应该有助于提高公众对 有前途的生物技术, 已经在欧洲广泛使用 并且正在进军美国 美国。包括39个参考文献、图表。
Perchlorate is a health concern because it disrupts the thyroid gland's use of iodine in the generation of metabolic hormones and could ultimately hinder normal physical growth and development. Because perchlorate contamination of drinking water has only recently come to the forefront, no technology has been established as the optimal treatment process for perchlorate removal. This research evaluated the use of activated carbon filtration to reduce perchlorate concentrations using conventional contact times and without generating a concentrated perchlorate waste stream. Abiotic granular activated carbon filtration experiments demonstrated that perchlorate was removed by ion exchange rather than chemical reduction. Biological reduction of perchlorate in the low-microgram-per-litre concentrations was achieved using biologically active carbon (BAC) filtration. Batch experiments verified the biological reduction and demonstrated that microorganisms in the BAC filter converted perchlorate to chlorate. Study results indicate that BAC filtration has the potential to be very cost-effective and efficient for removing perchlorate. Before BAC filtration can be applied to full-scale perchlorate remediation, however, the process must be optimized with respect to operating conditions and water quality characteristics. The findings described here should help raise the general awareness of promising biologically based technologies, which are already in extensive use in Europe and are making inroads in the United States. Includes 39 references, figures.
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发布单位或类别: 美国-美国给水工程协会
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