氮污染物在非饱和土壤中迁移过程对地下水水质影响分析  

Analysis to the Effect of the Nitrogen Contaminant Transporting in Unsaturated Soil on Groundwater Quality

作　　者：陈尚龙 达丽红 乔光建 

机构地区：[1]邢台水业集团有限公司,河北邢台054001 [2]河北省邢台水文水资源勘测局,河北邢台054000

出　　处：《南水北调与水利科技》2010年第4期58-61,102,共5页South-to-North Water Transfers and Water Science & Technology

摘　　要：根据邢台市平原区土壤环境状况,分析氮污染源在非饱和土壤中迁移规律,根据地下水监测资料,定量分析地下水中各类氮污染物的分布特征。氮类污染物在土壤中转化特征为:氨氮随地下水下移过程中,大部分被土壤吸附;亚硝酸盐氮中间产物,存在时间有限,对地下水的影响不明显;硝酸盐氮溶于水,入渗到地下水中,对地下水造成污染。通过对氮类污染物在非饱和土壤中的迁移规律分析,为合理使用化肥,保护地下水源提供科学依据。The widespread pollution from the overuse of fertilizers and pesticides in rural area is the main reason for the underground water con- tamination. The nitrogen contaminant under soil is affected by a lot of factors as underground environment, soil quality, soil moisture content, vent ability of the soil and pH value etc. And the nitration reaction and denitrification would occur simultaneously. The transporting rule of the nitrogen contaminant in the unsaturated soil is analyzed according to the environment condition of the soil in plain area of Xingtai City,and the quantitative analysis of the distribution feature of various nitrogen contaminants in the groundwater has conducted on the basis of the groundwater monitoring data. The transform characteristics of the nitrogen contaminant in the soil are as follows^most part of the NH N is adsorbed by the soil when the NH-N infiltrates with the underground water; the underground water is not affected by the intermediate product of the nitrite-nitrogen dramatical- ly, since it＇s short existing time;and the nitrate nitrogen dissolves in water, infiltrates into underground water and causes underground water pollu- tion. The analysis to the transporting rule of the nitrogen contaminant in the unsaturated soil provides science proof to the intelligent use of the fertilizers and the protection of the underground water.

关 键 词：氮污染 非饱和土壤 地质环境效应 邢台市平原区 

分 类 号：X523[环境科学与工程—环境工程] S152.7[农业科学—土壤学]