CN106277270A - 一种用土茯苓深度处理污水中汞的方法 - Google Patents

一种用土茯苓深度处理污水中汞的方法 Download PDF

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Publication number
CN106277270A
CN106277270A CN201610896703.6A CN201610896703A CN106277270A CN 106277270 A CN106277270 A CN 106277270A CN 201610896703 A CN201610896703 A CN 201610896703A CN 106277270 A CN106277270 A CN 106277270A
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hydrargyrum
rhizoma smilacis
smilacis glabrae
treating wastewater
deeply treating
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刘军
杜茹男
袁雅姝
由昆
郭慧宇
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Shenyang Jianzhu University
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Shenyang Jianzhu University
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

本发明涉及水处理领域，尤其涉及一种用土茯苓深度处理污水中汞的方法。本发明的技术方案如下：一种用土茯苓深度处理污水中汞的方法，包括如下步骤：首先将土茯苓烘干并将其加工为0.5～1cm厚的薄片；然后将所述薄片放入到过滤设备中。本发明提供的用土茯苓深度处理污水中汞的方法，能够有效降低污水厂尾水汞的浓度，有效控制含汞出水对江河湖泊的污染及危害，从而也避免了重金属汞对人类及动植物的危害。

Description

一种用土茯苓深度处理污水中汞的方法
技术领域
本发明涉及水处理领域，尤其涉及一种用土茯苓深度处理污水中汞的方法。
背景技术
随着我国工业产业的迅速发展，我国目前已成为工业废水排放大国。工业废水具有排放量大、污染范围广、水质变化大、重金属含量高、污染物质毒性强、危害大等特点。就重金属含量高的工业废水而言，我国大中型污水处理厂尾水出水水质达标率较低。我国重金属废水处理原则是：首先，最根本的是改革生产工艺。不用或少用毒性大的重金属；其次是采用合理的工艺流程、科学的管理和操作，减少重金属用量和随废水流失量，尽量减少外排废水量。一般接纳部分工业废水的污水处理厂，有可能存在汞超标的现象，尤其是利用活性污泥工艺的污水厂，对汞的去除效果为零。
汞是一种可在生物体内积累的毒物，易被皮肤、呼吸及消化道吸收，汞破坏中枢神经组织及口、粘膜和牙齿。汞在水体中经微生物作用生成甲基汞。甲基汞易在鱼、贝壳等海产品体内富集，体内形成很高浓度的甲基汞。人或动物食用了含有甲基汞的海产品，引起甲基汞中毒。由于中毒事件发生在日本的水俣市，而且当时中毒原因不清，故称“水俣病”。水俣病即汞中毒的一种。汞作为一种有毒的重金属，汞会引起人和动物的急、慢性中毒，并且还具有强大的致癌作用。大量的含汞废水排入江河湖泊等水域内将会对水生生物及动物有一定的危害，鱼类、虾类等生物会因为汞中毒大量死亡。鱼类、虾类等生物的腐尸会影响水域内其他生物的生存，因此水质会进一步的恶化。大量的含汞废水直接用来灌溉，水中的汞离子会随着农作物的吸水聚集在农作物体内。根据农业部及质量监督检测部门对农作物安全普查结果表明，我国部分地区农作物的质量安全问题之一是汞超标，超标率超过了20％。
污水处理厂处理含汞废水的常规方法有：还原法、硫化法、离子交换法、吸附法等，这些常规的处理方法对汞的去除有很好的去除效果，但是处理后的水中汞的含量仍然超标。
土茯苓为百合科多年生常绿攀缘状灌木，多生于山坡或林下，有解毒、除湿、利关节功效，主治治梅毒，淋浊，筋骨挛痛，脚气，疗疔疮，痈肿，瘰疬，梅毒及汞中毒所致的肢体拘挛，筋骨疼痛等症状。
发明内容
本发明提供一种用土茯苓深度处理污水中汞的方法，能够有效降低污水厂尾水汞的浓度，有效控制含汞出水对江河湖泊的污染及危害，从而也避免了重金属汞对人类及动植物的危害。
本发明的技术方案如下：
一种用土茯苓深度处理污水中汞的方法，包括如下步骤：首先将土茯苓烘干并将其加工为0.5～1cm厚的薄片；然后将所述薄片放入到过滤设备中。
所述的用土茯苓深度处理污水中汞的方法，其优选方案为，土茯苓的添加量依据污水中汞的含量确定，比例为汞：土茯苓＝1g：60～120kg。
本发明的有益效果为：利用本发明的方法，处理浓度为1mg/L的含汞废水接触45～50min，汞的去除率高达90％以上。本发明的方法可行性高，操作简单，运行成本低，环境友好不会造成二次污染。
附图说明
图1为汞的去除率曲线图。
具体实施方式
一种用土茯苓深度处理污水中汞的方法，包括如下步骤：首先将土茯苓烘干并将其加工为0.5cm厚的薄片；然后将所述薄片放入到过滤设备中；土茯苓的添加比例为汞：土茯苓＝1g：66kg。
实验验证如下：
(1)取100ml已配制好的浓度为1mg/L的汞溶液，放入150ml的广口三角烧瓶中；
(2)称取10g土茯苓，烘干并将其加工为0.5cm厚的薄片，放入广口三角烧瓶中；
(3)将广口三角烧瓶放在磁力搅拌器上进行磁力搅拌；
(4)每隔10min取一次水样，并用水系0.45u的滤膜过滤；
(5)将所取水样用ICP-Ms进行检测，并记录数据计算其中汞的去除率；得到如图1所示的汞的去除率曲线图。

Claims (2)

1.一种用土茯苓深度处理污水中汞的方法，其特征在于，包括如下步骤：首先将土茯苓烘干并将其加工为0.5～1cm厚的薄片；然后将所述薄片放入到过滤设备中。
2.根据权利要求1所述的用土茯苓深度处理污水中汞的方法，其特征在于，土茯苓的添加量依据污水中汞的含量确定，比例为汞：土茯苓＝1g：60～120kg。
CN201610896703.6A 2016-10-13 2016-10-13 一种用土茯苓深度处理污水中汞的方法 Pending CN106277270A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102247814A (zh) * 2011-05-17 2011-11-23 中国农业科学院麻类研究所 用于重金属废水处理的生物质吸附剂及重金属废水处理方法
CN104549169A (zh) * 2014-12-17 2015-04-29 宾远华 一种利用苹果渣制备重金属吸附剂的方法
CN106701093A (zh) * 2016-11-23 2017-05-24 产俊涛 一种铅污染土壤修复剂及其制备方法及应用

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102247814A (zh) * 2011-05-17 2011-11-23 中国农业科学院麻类研究所 用于重金属废水处理的生物质吸附剂及重金属废水处理方法
CN104549169A (zh) * 2014-12-17 2015-04-29 宾远华 一种利用苹果渣制备重金属吸附剂的方法
CN106701093A (zh) * 2016-11-23 2017-05-24 产俊涛 一种铅污染土壤修复剂及其制备方法及应用

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