西北干旱地区地下水放射性环境污染及防治研究--以内蒙古东乌旗地区为例

以东乌旗地区为例，研究了西北地区地下水放射性环境问题。结果表明：东乌旗地区地下水存在严重的放射性污染，花岗岩裂隙水、砂岩承压水和潜水达标率分别为8％、14％和45％；放射性铀、氡污染主要原因为铀矿化扩散成因、淋漓花岗岩成因和蒸发浓缩成因；处理本地区地下水铀污染的合理方法为阴离子交换树脂吸附法；地下水中氡有两面性，一方面饮用水中氡含量超标，给人体带来危害，只需将其露天放置一星期或加温煮沸即可达到饮用水标准；另一方面氡浴又有利于人体的健康。

SITUATION AND PREVENTION OF UNDERGROUND WATER RADIOACTIVE POLLUTION IN THE DRY AREA OF NORTHWEST CHINA:CASE STUDY FOR DONG WU BANNER,INNER MONGOLIA

This paper studies radioactivity pollution of groundwater in Dongwuqi area, majo rconclusion as follow: firstly, Radioactivity pollution was serious in the groundwater in Dongwuqiarea. The proportions of content of radioactivity isotope(uranium and radon) of granite water and sandstone water and spring meeting criterion are respectively 8%, 14% and 45%. Secondly,mineralize uranium and granite fracture and vaporize condense are the reason that radioactivity pollution of uranium and radon content of groundwater. Thirdly, reasonable way of treatment uranium pollution of groundwater is exchanging and adsorbing anion with resin. Radon content in groundwater has both sides functions, on the one hand, the radon content of drinking water exceeds criterion, the harmful result must be brought, it is a simply way to treat drinking water that radon content excess standard, in order to meet criterion only place it outdoor a week or heat it bubble up; on the other hand, it is in favor of healthiness bath in water of high content radon.