摘要
通过采用反渗透法,实验研究了核电站事故情况下应急生活饮用水中放射性核素的去除效果。采用TW30-1812低压反渗透膜组件,考察了核素含量、压力、p H、无机离子干扰等因素对非放射性模拟溶液中Co2+、Cs+、Sr2+等的截留率及出水电导率的影响。结果表明,进水核素的含量对核素截留率的影响不大;随着进水p H的增大,反渗透膜对核素的截留率增大,当p H>9时,核素的截留率变化缓慢;进水Ca2+含量对Cs+截留率的影响最大,当Ca2+的质量浓度增大为250 mg/L时,Cs+的截留率下降到77.4%。
The removal effect of radionuclides from emergency drinking water by reverse osmosis membrane was investigated when a severe nuclear power plant accident happened.The effects of nuclides content,pressure,pH,competing ions on the retention efficiency of non-active nuclides Co^2＋,Cs^＋,Sr^2＋and effluent conductivity were explored by using TW30-1812 low pressure reverse osmosis membrane.The experimental results showed that inflow nuclides content had no significant effect on nuclides retention.With inflow pH increasing,the rejection to nuclides increased; when the pH was higher than 9,the retention efficiency increased very slowly.The inflow Ca^2＋content had the greatest impact on the rejection of cesium ions; when the mass concentration of Ca^2＋in feed solution increased to 250 mg/L,the rejection coefficient of cesium decreased to 77.4%.
出处
《水处理技术》
CAS
CSCD
北大核心
2015年第4期81-84,共4页
Technology of Water Treatment
关键词
反渗透
核事故
应急生活饮用水
reverse osmosis
nuclear accident
emergency drinking water
