水循环条件下麦饭石矿化自来水研究  

Research on Mineralization of Tap Water with Maifan Stone under Water Circulation Condition

作　　者：王棉棉 黄国富 洪培琪 吕斯濠 WANG Mianmian;HUANG Guofu;HONG Peiqi;LV Sihao(School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China;Dongguan Cleaner Production Center, Dongguan 523808, China,＂ 3.School of Chemical En~neering and Environment, IVeifang University of Science and Technology;Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization, Shouguang 262700, Chin;Dongguan Golden Energy Environment Protection Technology Co., Ltd., Dongguan 523008, China)

机构地区：[1]东莞理工学院生态环境与建筑工程学院,广东东莞523808 [2]东莞市清洁生产科技中心,广东东莞523808 [3]潍坊科技学院化工与环境学院,山东半岛卤水资源高值化绿色化综合利用工程技术研发中心,山东寿光262700 [4]东莞市金能亮环保科技有限公司,广东东莞523008

出　　处：《水处理技术》2018年第6期105-109,共5页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大项目(2012ZX07206-004);广东省自然科学基金项目(2016A030313136)

摘　　要：针对目前市场上纯净水中矿物元素缺失的问题,实验研究构建水循环+麦饭石矿化装置来优化自来水水质,并出前后的麦饭石进行了表征。结果表明,麦饭石溶出总溶解固体(TDS)和Sr的量随固液比的增大而迅速增加,固液质量比为1:2时,TDS和Sr的质量浓度分别提高到41 mg/L和15.6μg/L。酸性条件有利于TDS和Sr的溶出,但不利于偏硅酸的溶出。水体初始p H在5~10时,矿化后p H均稳定在8.0左右。Sr的溶出量随水体硬度的增加而增大,而硬度对偏硅酸的影响不大。TDS、偏硅酸和Sr的溶出均随着溶出时间的延长而增大。溶出后的麦饭石表面孔隙分布较溶出前多,溶出后麦饭石中Si、Sr的质量分数分别从33.47%、2.26%降低到26.22%、0.58%。For the lack of mineral elements in pure water sold in the current market, the water circulation and Maifan stone mineralization system was developed to optimize the quality of tap water, and the Maifan stone was characterized before and after digestion. The results showed that, the dissolution concentrations of total dissolved solids （TDS） and Sr from Maifan stone increased rapidly with the increase of solid liquid ratio. When the solid-liquid mass ratio was 1：2, the mass concentrations of TDS and Sr were increased to 41 mg/L and 15.6 μg/L, respectively. Acidic condition was beneficial to TDS and Sr dissolution, but it was bad.for metasilieate acid dissolution. When initial pH of tap water was 5-10, the pH was stabilized at about 8.0 after mineralization. The dissolution of Sr increased with water hardness increased, but water hardness had little effect on the dissolution of metasilicate acid. The dissolution concentrations of TDS, metasilicate acid and Sr increased with the dissolution time. It was found that the pore distribution of Maifan stone was much higher after dissolution, and the mass fraction of Si and Sr after dissolution decreased from 33.47% and 2.26% to 26.22% and 0.58%. respectively.

关 键 词：麦饭石 矿化 水循环 自来水 

分 类 号：TU991.27[建筑科学—市政工程]