摘要
从常规砂滤池改造成膜池的角度出发,通过中试,研究了浸没式超滤工艺处理水厂沉后水的处理效能及其运行的稳定性。结果表明,超滤出水平均浊度为(0.050±0.014)NTU,粒径>2μm的颗粒数小于20个.mL-1,能有效保证出水的生物安全性;超滤膜膜丝作为生物载体附着生长一定量的微生物,能去除少量氨氮;超滤对沉后水中有机物的去除率不高,CODMn和UV254的去除率均为10%左右;在试验工况下,工艺稳定运行,化学清洗周期可达4个月;同时试验装置的等效滤速为8.6 m.h-1。因此,从除污染效能和基建用地上看,超滤膜可以替代传统砂滤池。
A Pilot-scale study was performed to investigate the treatment efficiency and operation stability by using the Immersed Ultrafiltration Process in place of sand filter for treating the settled water of a conventional water plant.The results showed that the Immersed Ultrafiltration Process could ensure the biological-safety with（0.050±0.014） NTU and 20 particles（particle size 2 μm） per milliliter effluent.But it couldn＇t remove CODMn and UV254 effectively,only 10% around.Though,the process could remove NH4＋-N slightly by nitrification.The process could run stably under the experimental condition.The equal filtration rate was 8.6 m·h-1.With regard to treatment efficiency and land saving,the Immersed Ultrafiltration Process can substitute the sand filter as technological upgrading of conventional water plant.
出处
《水处理技术》
CAS
CSCD
北大核心
2012年第4期114-117,共4页
Technology of Water Treatment
关键词
浸没式超滤膜
沉后水
工艺改造
immersed ultrafiltration process
sedimentation effluent
technological upgrading of conventional water treatment process
