摘要
实验以多孔陶粒为载体 ,在一定条件下 ,利用非均相及二次成核作用在陶粒表面沉积一层羟基磷酸钙晶体 ,从而培养出初级晶种 .实验将粒径为 1 2 5mm多孔陶粒与石英砂相对比 ,结果表明采用多孔陶粒作载体形成结晶体效果较好 .用该晶种的连续流固定床除磷 ,获得令人满意的效果 .当原水含磷质量浓度在 2～ 5mg/L范围内时 ,空床线速不大于 2 5m/h ,水力停留时间不小于 1 2min时 ,脱磷固定床除磷率较高且稳定 ,磷去除率可达 90 %以上 .
The aim is to remove phosphorus by crystallization on porous ceramisite. The 1.25 mm-diameter-large porous ceramisite is used as a carrier to cultivate crystal owe to relative its merits such as light quality, strong mechanics, more porosity, powerful absorption and cheap price, which is superior to quartz. The crystal fixed beds remove phosphorus by filtering. And the result is satisfying. When the phosphorus density in raw water is between 2 to 5 mg/L, space volume is not more than 2.5 m/h, hydraulic retention time is not less than 12 min, phosphorus removal is stable and effective, greater than 90%.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第5期664-667,共4页
Journal of Southeast University：Natural Science Edition
基金
江苏省建设厅资助项目 (JS2 0 0 12 )
关键词
除磷
多孔陶粒
结晶固定床
Absorption
Crystallization
Phosphorus
Porosity
Porous materials
