| 扫频脉冲电磁场对污水的杀菌性能 |
| 摘要点击 1787 全文点击 1712 投稿时间：2002-09-04 修订日期：2002-10-24 |
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| 中文关键词 扫频脉冲电磁场 去除率 细菌 大肠杆菌 |
| 英文关键词 swept pulsed electromagnetic field removal efficiency bacteria coliform |
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| 中文摘要 |
| 将直流脉冲与变频扫频技术相结合开发研制出扫频直流脉冲装置,利用其产生的脉冲电磁场对生活污水进行了电磁杀菌试验研究,探讨了影响杀菌效果的相关因素.试验结果表明,在扫频范围400Hz～60kHz、输出功率20W、电流1～2A条件下,脉冲电磁场对生活污水具有一定的灭菌作用,其杀菌性能随作用时间、pH值、温度、原水菌数的升高而升高.当温度为25℃,pH为7.47时,原水经电磁处理4h后,细菌总数从7.2×106个·mL-1下降到2.2×104个·mL-1,去除率为99.7%;大肠杆菌数从9.2×105个·mL-1下降到3.5×104个·mL-1,去除率为96.2%. |
| 英文摘要 |
| In this paper, an applicable swept pulsed equipment was developed to treat the domestic wastewater and the effect of swept pulsed electromagnetic field on disinfection was studied. It was found that the effect was obvious and the disinfection performance of electromagnetic field was increased with the increasing of the pH, the temperature ,the treatment time and the bactericidal concentration. The experimental results showed that the amounts of total bacterium and coliform per milliliter were decreased from 7.2×106 to 2.2×104 and from 9.2×105 to 3.5×104 respectively after the treatment period of 4h when the temperature was 25℃ and pH 9.0. Corresponding, the removal efficiency of total bacterium were 99.7% and 96.2%. |
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