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金属矿山 ›› 2009, Vol. 39 ›› Issue (11): 151-153+156.

• 安全与环保 • 上一篇    下一篇

石膏/轻烧菱镁矿复合滤床法对铅污染水体修复研究

陈楷翰1,雷少钦1,李达进1,陈清施2   

  1. 1.福建省泉州师范学院;2.福建省厦门市路达工业有限公司
  • 出版日期:2009-11-16 发布日期:2011-04-26
  • 基金资助:

    泉州市科技计划重点项目(编号:2006Z16)。

Research on the Restoration of Lead Polluted Water-body with  Light Burned Magnesite Gypsum Composite Filter Bed

Chen Kaihan1,Lei Shaoqin1,Li Dajin1,Chen Qingshi2   

  1. 1.Quanzhou Normal University, 2.Xiamen Luda Industrial Co., Ltd.
  • Online:2009-11-16 Published:2011-04-26

摘要: 基于吸附共沉淀机理,将石膏和球磨菱镁矿粉复合加入处理模拟铅污染水体(含过量硫酸铅微粒的微混浊饱和硫酸铅溶液,Pb2+约2 mg/L,总铅10 mg/L),研究了石膏(CaSO4·2H2O)、球磨菱镁矿(Mg(OH)2和MgCO3混合物)用量以及过滤时间对去除低浓度铅的影响。发现在最佳条件下可将水体的总铅含量降低到0.02 mg/L。在此基础上提出石膏轻烧菱镁矿复合滤床工艺,在对铅锌尾矿淋滤水和蓄电池厂排出含微量铅水进行试验中发现,可将水体中总铅降低到0.04 mg/L以下,总镉降低到低于0.1 mg/L,适合用于自来水供水及矿山尾矿库治理。

关键词: 石膏/轻烧菱镁矿复合滤床, 铅锌尾矿淋滤水, 含微量铅水体, 无损修复

Abstract: Based on the adsorption co-precipitation mechanism, the gypsum and magnesite powder were mixed to add the simulated lead polluted water (including of turbid saturated sulfate lead solution with excessive sulfate lead micro-particles, Pb2+ about 2 mg/L, the total lead of 10 mg/L).The effect of gypsum (CaSO4·2H2O) and milling magnesite (Mg (OH) 2 and MgCO3 mixtures) content as well as the filtering time on reducing lead content was studied.It is found that under optimal condition, the total lead content in water bodies can be reduced to 0.02 mg/L.Based on this, the light burned magnesite gypsum composite filter bed process was proposed.Some tests on trace lead leaching water from lead-zinc tailings and battery factory showed that the lead content in water was lowered to below 0.04 mg/L and the total cadmium was reduced to below 0.1 mg/L, being suitable for water supply and the treatment of mine tailing.

Key words: Gypsum light burned magnesite composite filter bed, Leaching water from lead-zinc tailings, Trace lead contained water, Non-destructive repair