以FeOOH/SBC作为渗透反应墙技术(PRB)填料,基于PRB模拟装置考察了填充材料对含水层盐酸金霉素(CTC)的去除效果。实验结果显示,随着CTC在含水层中的迁移运动,包气带土壤中CTC浓度从12.57mg/kg降至4.82mg/kg,水样的pH基本保持不变,而氧化还原电位(ORP)出现波动,溶解氧(DO)在经历初期上升后趋于稳定。在未添加过硫酸盐的条件下,CTC的去除效率可达79%。当添加2mmol/L过硫酸盐后,去除效率提升至84%。本研究结果可为CTC污染地下水的PRB研究提供理论参考。
Using FeOOH/SBC as the permeable reactive barrier (PRB) filler material,the removal efficiency of chlortetracycline hydrochloride (CTC) in aquifers was investigated based on a PRB simulation device.Experimental results showed that as CTC migrated through the aquifer,its concentration in the vadose zone soil decreased from 12.57mg/kg to 4.82mg/kg.The pH of the water samples remained relatively stable,while the oxidation-reduction potential (ORP) fluctuated,and the dissolved oxygen (DO) initially increased and then tended to be stabilized.Without the addition of persulfate,the CTC removal efficiency reached 79%.When 2mmol/L of persulfate was added,the removal efficiency increased to 84%.These findings can provide theoretical insights for PRB research on groundwater contaminated with CTC.
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基金资助
江苏省研究生科研与实践创新计划项目(SJCX23＿1554)
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