脱剂:一种除过程,用于从燃煤发电厂的废水中对环境进行环境净化
Jeffrey D Einkauf1, Zhuoyi Zeng2, Ziheng Shen2
1Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
ACS environmental Au
|January 26, 2026
概括
一个新的DeSelenator工艺有效地从燃煤发电厂的废水中去除有毒. 这种具有成本效益的技术使用共结晶和过来满足严格的排放环境限制.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 水处理技术水处理技术
背景情况:
- 淡水系统中的污染对环境构成重大风险,源自燃煤发电厂等工业来源.
- 有效和经济的技术对于降低废水中的度至关重要,以满足监管排放限制.
研究的目的:
- 从燃煤电厂的废水中证明一种有效和经济高效的去除 (Se) 的过程,主要是作为酸盐离子,从燃煤电厂的废水中去除.
- 在实验室和工业规模上优化和验证DeSelenator过程.
主要方法:
- 在DeSelenator工艺中,使用酸盐和硫酸盐离子与-双-伊米诺二 (BBIG) 离子共同结晶,形成不溶盐.
- 通过过来提取沉物,然后进行离子交换树脂处理,以减少到5ppb.
- 活性炭处理在水排放之前去除剩余的BBIG配体.
主要成果:
- 使用BBIG的SO2-/SeO2-共结晶有效地从废水中去除了90%以上的硫和.
- 阳离子交换和活性炭抛光步骤进一步降低了,以达到EPA的5ppb监管限制,并消除了99.8%的BBIG配体.
- 在燃煤发电厂的实地测试证实了该过程的有效性.
结论:
- 该DeSelenator工艺提供了一种高效且具有成本效益的方法来从工业废水中去除,与现有的最先进技术相美.
- 这项技术可以安全地排放处理过的水,减轻对淡水系统的环境影响.
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