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Removal technology of high concentration nitrate ion in industrial wastewater using mayenite

机译：钙铝石去除工业废水中高浓度硝酸根离子的技术

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摘要

PROBLEM TO BE SOLVED: To provide a method capable of removing anions in acidic industrial wastewater containing a high concentration of anions. SOLUTION: Mayenite or similar calcium aluminumate is added to acidic industrial wastewater containing a high concentration of anions. The pH of wastewater rises when mayenite or similar calcium aluminate is hydrolyzed by acidic wastewater. As a result, Ca / Al layered double hydroxide is generated from the solution, and anions are taken in between the layers to provide a method for removing anions in the wastewater. Further, the present invention provides a method capable of regenerating mayenite or similar calcium aluminumate by heating the residue and reusing it as an anion removing agent. [Selection diagram] None

机译：要解决的问题：提供一种能够去除含有高浓度阴离子的酸性工业废水中阴离子的方法。解决方案：将钙铝石或类似的铝酸钙添加到含有高浓度阴离子的酸性工业废水中。当钙铝石或类似的铝酸钙被酸性废水水解时，废水的pH值升高。结果，从溶液中产生了Ca / Al层状双氢氧化物，并且在两层之间吸收了阴离子，从而提供了一种去除废水中阴离子的方法。此外，本发明提供了一种能够通过加热残留物并将其用作阴离子去除剂而再生钙铝石或类似的铝酸钙的方法。 [选择图]无

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公开/公告号JP2020127914A

专利类型
公开/公告日2020-08-27

原文格式PDF
申请/专利权人栃木県石灰工業協同組合;
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申请/专利号JP20190021175
发明设计人荻原俊夫;野田佳雅;磯文夫;
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申请日2019-02-08
分类号C02F1/28;B01J20/08;B01J20/30;B01J20/34;C02F1/42;C01F7;
国家 JP
入库时间 2022-08-21 11:37:42

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