盐碱地洗水回收利用研究(Ⅰ)  

Research on Recycling of Washing Water in Saline land

作　　者：陈兰[1] 孔秋婵[1] 梁玉祥[1] 

机构地区：[1]四川大学化工学院,四川成都610065

出　　处：《现代农业科技》2010年第16期263-265,270,共4页Modern Agricultural Science and Technology

摘　　要：通过对新疆盐碱地洗水、地下水体、公共水体的水样进行分析,结果表明:有害盐分离子主要为Na+、Cl-。地下水体、公共水体水样的总盐量分别为2571、1691mg/L,前者含盐量严重超过了农耕用水标准,未经任何处理的盐碱地洗水对地下水体和公共水体都造成了一定的盐污染。对比分析化学、生物、物理3种除盐处理方法,初步讨论物理吸附对洗水盐分的除去效果,选用3种吸附剂(膨润土、海泡石、分子筛)对盐碱地洗水(总盐量为11524mg/L,Na++K+含量为4779mg/L)进行降盐处理。在搅拌速度60r/min,搅拌时间25min,液固比0.03∶1(kg/L)的条件下,改变吸附温度,3种吸附剂在各自的最佳温度条件下能使水样的总盐量分别下降30%、40%、25%。该试验结果对洗水的回收利用具有重要的参考价值。By analyzing water samples of washing water,underground water and public water of Xinjiang saline land,the results showed that the mainly harmful ions were Na＋ and Cl-. The total salt content of the underground water and public water samples were respectively 2 571 mg/L,1 691 mg/L.The former was exceeded the agricultural standard of water using. Obviously,the underground water and the public water were polluted by the salt the washing water in saline land without any treatments. According to comparison among chemical,biological,physical water treatment methods to remove,the physical absorption in demineralization of washing water was discussed. Three adsorbents（bentonite,sepiolite,zeolite） were used to deal with the salt washing water from saline and alkaline land water sample（the total salt content was 11 524 mg/L,Na＋ and K＋ content was 4 779 mg/L） . Under the following condition：a stirring speed of 60r/min,stirring time of 25 min,liquid to solid ratio 0.03 ∶1（kg/L） ,by changing the adsorption temperature,three adsorbents could make the total salt content of the water sample decreased respectively by 30%,40%,25% in its optimum temperature. These results had great references value to the washing water＇s recycle.

关 键 词：盐碱地 洗水 回用 水质评价 物理吸附 

分 类 号：X523[环境科学与工程—环境工程] TV213.9[水利工程—水文学及水资源]