摘要
以人工模拟湿地作为研究对象,利用氯苯、对氯甲苯2种废水对其进行污灌,经过一定的时间后对湿地土壤的理化性质进行研究并加以对比,总结出污灌后土壤理化性质的变异规律。研究表明:经过一段时间的污水处理,污水中的某些成分可能会影响一部分的土壤颗粒的结合状态,但并未改变土壤质地的类别;实验用来污灌的污水中不含有一般综合性污水中所含有的钠盐、镁盐等,同时又存在着土壤的淋溶作用,使得污灌前后土壤中的水溶性盐的含量是减少的;污水处理前后土壤的pH值是先减小再增大的,但均属于弱碱性;土壤含水率的变化正好与pH值的变化特征相反,呈现出先增大再减小的趋势。只是2组平行实验的增大或减小的幅度不一致。
Chosing artificial wetland as the research object, using chlorobenzene and chlortoluence wastewater as the irrigation wastewater, after a certain period of time, the physical and chemical properties of soil in wetland were studied . Contrast was made of the wastewater before and after irrigation and the variation law of soil＇s physical and chemical properties were summed up. The results showed that： after a period of sewage treatment, some components of sewage may affect the combination state of part of the soil particles, but did not change the soil texture categories; the wastewater used to irrigate did not contain Na-salt, Mg-salt, etc., which was different from general comprehensive wastewater, at the same time there was soil eluviation, which made the wastewater irrigation and water soluble salt content of the soil reduced; during sewage treatment, soil pH value first reduced and then increased, but was weak alkaline all the time; soil moisture changed in the opposite trend, which first increased and then decreased. But during＂ the two sets of parallel experiments, the increasing and decreasing range was different.
出处
《环境科技》
2013年第2期58-62,共5页
Environmental Science and Technology
关键词
湿地
污灌
变异
Wetland
Sewage irrigation
Variation
