【摘要】 基于负载锰质催化膜陶粒膨胀床滤池（EBF）工艺，构建了规模为1 m~3/h的农村井水除铊处理系统，并开展中试研究。结果表明，除铊关键因素是高锰酸钾投加量和促生新生态二氧化锰催化效果，除铊方式是新生态二氧化锰表面络合羟基与Tl（Ⅰ）进行离子交换，再通过陶粒表面锰质催化膜吸附新生态二氧化锰实现对铊的去除。基于中试在广东省某村建立了规模为120 m~3/d的井水除铊示范工程，在历时3年运行中，当进水Tl（Ⅰ）浓度为0.23～0.52μg/L、高锰酸钾投加量为0.35～0.50 mg/L时，出水铊浓度为0.01～0.06μg/L，达标率为100%。该除铊系统具有出水水质稳定、无二次污染、无需再生、无人值守以及运行费用低等优点，有效解决了农村饮用井水除铊难题。更多还原

【Abstract】 Based on the process of ceramsite expanded bed filter(EBF) loaded with manganese catalytic film, a thallium removal treatment system of rural well water with a scale of 1 m3/h was constructed for a pilot-scale study. The results showed that the key factors for thallium removal were the dosage of potassium permanganate and the catalytic effect of promoting the formation of nascent-state manganese dioxide. The thallium removal method was that the hydroxyl groups on the surface of the nascent-state manganese dioxide underwent ion exchange with Tl(Ⅰ), and the nascent-state manganese dioxide was adsorbed through the manganese catalytic film on the surface of the ceramsite to achieve thallium removal from well water. Based on the pilot test, a demonstration engineering for thallium removal from well water with a scale of 120 m~3/d was established in a village in Guangdong Province. During a three-year operation, when the influent Tl(Ⅰ) concentration was 0.23-0.52 μg/L and potassium permanganate dosage was 0.35-0.50 mg/L, the effluent Tl(Ⅰ) concentration ranged from 0.01 μg/L to 0.06 μg/L, achieving a compliance rate of 100%. This thallium removal system has the advantages of stable effluent quality, no secondary pollution, no need for EBF regeneration, unattended operation and low operating costs. It effectively solves the problem of thallium removal in rural drinking well water.更多还原