磁化或电离化微咸水理化特性试验  

Experiment on physical and chemical characteristics of activated brackish water by magnetization or ionization

作　　者：王全九[1] 张继红[1] 门旗 谭帅[1] 周莉薇 刘湘岩 

机构地区：[1]西安理工大学西北旱区生态水利工程国家重点实验室培育基地,西安710048 [2]新疆惠利灌溉科技股份有限公司,乌鲁木齐832011

出　　处：《农业工程学报》2016年第10期60-66,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：水利部公益性行业科研专项经费项目(201301102)资助;新疆水利科技项目(2015Y11)

摘　　要：改善微咸水理化特性,提高微咸水利用效率,成为合理利用微咸水重要研究内容。为了对微咸水活化效果及活化微咸水理化特性进行定量评价,该文采用磁化和电离化法对微咸水进行不同的活化处理,通过室内测试,对电离化微咸水活化系统的技术参数进行了分析,并对活化微咸水的表面张力系数、溶氧量、电导率及p H值等理化特性进行了研究。结果表明,电离化系统要求接地电阻不超过5Ω;活化微咸水表面张力系数显著减小、溶氧量显著增加、电导率和p H值受到不同程度的影响;但对表面张力系数和溶解氧影响比较明显,对电导率和p H值影响不显著。在矿化度5 g/L时,活化微咸水表面张力相对减少9.14%-13.84%,溶氧量相对增加8.04%-10.23%,表面张力相对减少量与溶氧量相对增加量可以从客观上反应活化微咸水理化特性的变化,而表面张力相对减少量与溶氧量相对增加量之间又存在显著的指数函数关系。根据表面张力相对减少量,电离化微咸水活化处理效果优于磁化处理,磁场强度3 000 Gs与变频磁化处理活化效果显著。因此,可以用表面张力相对减少量作为定量评价指标对活化微咸水的理化特性进行综合性定量评价,以判断不同活化方式的活化效果。The application of activated brackish water in the water treatment and agriculture fields has been getting a lot of attention. The activated brackish water usually has different impact on the growth of plant, and a reasonable index is necessary for evaluating the effects of different activated brackish water. In this paper, a laboratory experiment was carried out to investigate the physical and chemical characteristics of the Na Cl brackish water, which were set as different salinity（0.1, 1, 2, 3 and 5 g/L）. The magnetized and ionized methods were adopted to activate the brackish water, and the technical requirements of the ionized activation system of brackish water were ascertained. Meanwhile, the changes of surface tension coefficient, dissolved oxygen, electrical conductivity and p H value of activated brackish water were studied by the laboratory test. The results indicated that there were stable grounding current and activation effects, when the grounding resistance was less than 5 Ω. Furthermore, the changes of the physical and chemical characteristics of the activated brackish water were extremely remarkable. The surface tension coefficient reduced significantly, while the change of dissolved oxygen was opposite. In the meantime, the electrical conductivity and p H value were affected at different degrees.With the increase of brackish water salinity, the surface tension coefficient increased accordingly, while the dissolved oxygen changed oppositely. The surface tension of the activated brackish water relatively reduced by 9.14%-13.84% in the brackish water with the salinity of 5 g/L, while the dissolved oxygen relatively increased by 8.04%-10.23%. According to the surface tension′ s relative reduction, the difference was obvious among different activated treatments. The ionized activation treatment was superior to the magnetized water, and the stainless steel ionized separator（SIW） was better than the one with magnesium core（MIW）. There was the optimum magnetization for permanent magnet, a

关 键 词：磁化 电离化 物理特性 化学特性 活化微咸水 表面张力系数 定量评价 

分 类 号：O441.6[理学—电磁学]