摘要
逆流共聚气浮水处理工艺相对于传统的气浮、沉淀处理工艺有很大的优越性 ,一方面絮凝过程在逆流共聚气浮反应柱中进行 ,溶气回流水释放的微气泡参与到悬浮颗粒物的絮凝反应中而有助于形成体积质量小而结构牢固的絮体 ;另一方面反应柱中的微絮体在气泡的生成过程中充当了“核”的作用 ,有助于溶气水中气泡的迅速形成并提高气泡与絮体的碰撞粘附效率 ,同时反应柱中可形成稳定的气泡—絮体共聚悬浮层 ,有利于拦截随水流下行的絮体与上升的微气泡 ,提高了处理效率。
Counter current co-flocculation flotation (CCC - FF) for treatment of drinking water has quite a few advantages over the conventional air-flotation/sedimentation process. On one hand, the flocculation proceeds in CCC - FF tank, and then the micro-bubbles released from recycle water will take part in the flocculation of suspended particles, which contributes to the formation of low density but highly stable flocs. On the other hand, the micro-flocs function as 'nucleus' during the bubble formation from the recycle water, resulting in the formation of bubble in water and enhancement of the collision and adhesion rate between bubble and floc. Moreover, bubble - floc aggregate will form blanket in certain part of the CCC-FF tank, which will intercept efficiently the downward-flowing flocs and upward-flowing bubbles.
出处
《中国给水排水》
CAS
CSCD
北大核心
2002年第7期12-16,共5页
China Water & Wastewater
基金
国家自然科学基金资助项目 (5 0 1780 0 9)
关键词
气浮
逆流共聚
除浊
air-flotation
counter current co-flocculation flotation
turbidity removal
