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首页> 外文会议>2011 water quality technology conference amp; exposition: An Oasis of Ideas for a Changing Environment. >CASTAIC LAKE WATER AGENCY OPERATING EXPERIENCE WITH LEAD-LAG ANION EXCHANGE FOR PERCHLORATE REMOVAL
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CASTAIC LAKE WATER AGENCY OPERATING EXPERIENCE WITH LEAD-LAG ANION EXCHANGE FOR PERCHLORATE REMOVAL

机译：带有铅离子阴离子交换剂的高氯酸盐去除钙的湖水操作经验

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摘要

This paper presents the Castaic Lake Water Agency's experience with starting up and operating its new Saugus Perchlorate Treatment Facility (SPTF) located in Santa Clarita, California. The 2,400 gpm capacity plant includes a lead-lag anion exchange process for removing perchlorate from an extremely impaired groundwater (about 20 to 60 μg/L perchlorate in the blended groundwater). The resin is single use and replacement of the lead bed resin is based on its effluent perchlorate concentration reaching the perchlorate MCL of 6 μg/L. In addition to perchlorate and other compliance monitoring, CLWA must also conduct nitrosamine monitoring after virgin resin is installed to characterize the duration and extent of nitrosamine formation and implement resin installation and flushing procedures to minimize the risk of producing water with nitrosamines. The paper describes the performance of the anion exchange process before and after modifications were made to address shorter than anticipated resin bed life. The paper also describes experience with addressing nitrosamine formation and chloride peaking issues.
机译：本文介绍了Castaic Lake Water Agency在加利福尼亚州圣克拉丽塔市启动和运营其新的Saugus高氯酸盐处理设施（SPTF）的经验。这座产能为2,400 gpm的装置包括铅-滞后阴离子交换工艺，用于从极端受损的地下水（混合地下水中约20至60μg/ L高氯酸盐）中去除高氯酸盐。该树脂为一次性使用，铅床树脂的更换基于其流出的高氯酸盐浓度达到6μg/ L的高氯酸盐MCL。除了高氯酸盐和其他合规性监测之外，CLWA还必须在安装原始树脂后进行亚硝胺监测，以表征亚硝胺形成的持续时间和程度，并实施树脂安装和冲洗程序，以最大程度地降低使用亚硝胺生产水的风险。本文描述了在进行改性以解决比预期的树脂床寿命短之前和之后的阴离子交换工艺的性能。本文还介绍了解决亚硝胺形成和氯离子峰化问题的经验。

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