摘要
分析了过滤与堵塞的规律，即过滤时表层堵塞比下层严重．随着过滤运行时间的延续．滤层堵塞由表层逐渐向下层推移；根据反冲洗试验结果，提出了最佳反冲洗强度和最佳膨胀率，并对反冲洗效果进行了实际验证，为正确设计农用砂过滤器提供了设计依据．
The law of filtration andclogging is analyzed. The clogging upper layers is more seriousthan lower lay6rs and it is developed from top to bottom as filtrating time g￣ on. The optimumrate of backflushing and optimum coefficient of expension have been advanced. And the effect ofbackflushing have been verified. These give designers a theory basis for designing and using thiskind of sand filters.
出处
《武汉水利电力大学学报》
CSCD
1996年第6期30-34,共5页
Engineering Journal of Wuhan University
基金
水利部水利技术开发基金
关键词
过滤器
滴灌
堵塞
膨胀率
反冲洗强度
micro-irrigation
clogging
coeffient of expansion
rate of backflushing
