AWWA ACE58231 GAC Tailored with Organic Cations: An Emerging Alternative for the Treatment of Perchlorate Contaminated Groundwater

有机阳离子定制的GAC:处理高氯酸盐污染地下水的新兴替代方案

基本信息

标准号
AWWA ACE58231
标准状态
现行
发布单位或类别
美国-美国给水工程协会(US-AWWA);
发布日期
-
实施日期
-
废止日期
-
CCS分类
-
ICS分类
-

研制信息

起草单位
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起草人
-
归口单位
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摘要

Perchlorate (ClO4-) contaminates groundwater that could be used by approximately 15million Americans (U.S. EPA 1999). The majority of perchlorate in the environment originatedfrom its use as a propellant in rocket fuel (Gullick et al. 2001). As perchlorate has a limited shelflife, the rocket fuel was periodically washed from the rockets. This contaminated wash thenmade its way into the groundwater.Perchlorate is a concern to human health. At one time it was used to treat Graves disease;however, its use has been discontinued as perchlorate was linked to anemia and fetal braindamage. The primary health concern with perchlorate deals with the thyroid. Perchlorate willinhibit the uptake of iodide by the thyroid, leading to hypothyroidism (Li et al. 2001). Toaddress the health concern presented by perchlorate, several states including California andTexas, have implemented state action levels for ClO4- that range between 2 and 18 ppb.This research indicates that tailored granular activated carbon (GAC) can removeperchlorate for extended time. This tailoring consists of preloading the GAC with organiccations, and this process can increase the GAC bed life by 30 times. Includes 5 references, figures. 高氯酸盐(ClO4-)污染地下水,大约15%的人可以使用地下水百万美国人(美国环保署,1999年)。环境中的大部分高氯酸盐都来自将其用作火箭燃料的推进剂(Gullick等人,2001年)。因为高氯酸盐的货架有限在生命中,火箭燃料会定期从火箭中清洗出来。那么这是污染的洗涤液吗进入地下水。高氯酸盐是人类健康的一个问题。它一度被用于治疗格雷夫斯病;然而,由于高氯酸盐与贫血和胎儿大脑有关,它的使用已经停止损坏高氯酸盐的主要健康问题涉及甲状腺。高氯酸盐会抑制甲状腺对碘的吸收,导致甲状腺功能减退(Li等人,2001年)。到解决高氯酸盐带来的健康问题,包括加利福尼亚州和加利福尼亚州德克萨斯州已经对ClO4实施了州行动级别-这个范围在2到18 ppb之间。这项研究表明,定制的颗粒活性炭(GAC)可以去除长时间使用高氯酸盐。这种裁剪包括在GAC中预加载有机物这一过程可以将GAC床层寿命提高30倍。包括5个参考文献、图表。 展开▼

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