摘要
目的 观察微电流（DC）与游离氯（FC）对水中大肠杆菌噬菌体f2的协同灭活效果。方法 用电流密度0.4-1.2mA/m2协同游离氯0.2～0.3mg/L对水中大肠杆菌噬菌体f2进行了灭活试验,用Berenbaum方法判断微电流与氯灭活病毒有无协同效应,并比较单独氯处理与协同处理的灭活效果。结果 电流密度达到0.4 mA/cm2对水中大肠杆菌噬菌体f2有弱灭活作用,电流密度0.6 mA/cm2与游离氯0.2mg/L或电流密度0.4 mA/cm2与游离氯0.3 mg/L有协同灭活效应,且灭活率K值与单独用氯比较,差异有显著性（P<0.05）。水的pH值低、硬度高及有机物含量低时,电氯协同有较好的灭活效果。结论 电流密度达到一定强度时协同游离氯可提高低浓度氯对水中大肠杆菌噬菌体f2灭活的效果。
Objective To observe the synergetic virucidal effect of low amperage direct current (DC) and free chlorine(FC) on coliphage f2 in water. Methods Water samples with coliphage f2 added were treated by 0.4-1.2 mA·cm-2 low amperage direct current combined with 0.2- 0.3 mg·L-1 free chlorine(FC) . Synergetic effect and inactivation efficacy of DC combined with FC were estimated by Berenbaum's method and inactivation rates K value. Results Weak virucidal effects of DC alone on coliphage f2 could be observed only when DC was on 0.4 mA·cm-2. The synergetic inactivation effectiveness against coliphage f2 was found at following conditions: 0.6 mA·cm-2 DC combined with 0.2 mg·L-1 FC or 0.4 mA·cm DC combined with 0.3 mg·L-1 FC, and the inactivation rates K value of DC combined with FC was significant higher than that of chlorine alone(P < 0.05) . DC alone and DC in combination with FC produced better inactivating effects on coliphage f2 in water samples with lower pH, higher hardness and less organics contents. Conclusion Direct current with a certain intensity might enhance inactivation effectiveness against coliphage f2 of low-level chlorinated water.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2002年第4期309-311,共3页
Journal of Environment and Health
