试验研究

人造沸石处理钽铌厂矿石分解工序含氟废水的研究

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  • 中南林学院应用化学研究所, 湖南株洲412006
李水芳(1968- ), 1991年毕业于湖南师范大学化学系, 讲师。电话:0731-5623823, E-mail:csfuls@126.com

收稿日期: 2005-02-20

  网络出版日期: 2010-10-01

Study on zeolite for treating fluoride-containing wastewater in the process of ore decomposition in tantalum and niobium plant

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  • Research Institute of Applied Chemistry, Central-South Foresty University, Zhuzhou 412006, China

Received date: 2005-02-20

  Online published: 2010-10-01

摘要

对含氟量为1836mg/L的钽铌厂矿石分解工序碱性废水用沸石进行除氟试验。对未改性沸石,试验了沸石用量、废水初始浓度和振荡吸附时间对氟去除率的影响,发现未改性沸石氟去除率不高。用AlCl3溶液对其改性后,去除率明显升高,可达95%以上,处理后废水残氟量可降到10mg/L以下,达到国家污水综合排放标准中的一级标准。

本文引用格式

李水芳, 李梦 . 人造沸石处理钽铌厂矿石分解工序含氟废水的研究[J]. 工业水处理, 2005 , 25(7) : 18 -19 . DOI: 10.11894/1005-829x.2005.25(7).18

Abstract

A treatment study of some wastewater from the ore decomposition process in a tantalum and niobium plant with F-concentration being 1 836 mg/L is presented. The treatment was conducted by using zeolite.We analyzed the influence of the dosages of zeolite, the content of fluoride in wastewater and the time of adsorbing on the removal efficiency of fluoride about non-modified zeolite. The treatment results show that the removal efficiency of fluoride is low. Zeolite modified by AlCl3 can increase the removal efficiency of fluoride up to beyond 95%. F-concentration in wastewater drops to under 10 mg/L, which meets the requirement of the first grade National Standard for wastewater discharge.

参考文献

[1] 黄怡, 高乃云.改性石英砂及沸石滤料除氟性质比较研究[J].环境卫生工程,2003, 9(3):128-131
[2] 罗道成, 等.改性沸石对电镀废水中Pb2+、Zn: 2+、Ni2+的吸附[J].材料保护, 2002,7(7):41-43
[3] 王萍, 等. 氯化钠改性沸石吸附水中苯酚的研究[J].中国给水排水, 2000, (4):11-13

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