臭氧-生物活性炭对微絮凝强化过滤的影响研究  

Influence of Ozone/BAC on Micro-flocculation and Enhanced Filtration

作　　者：刘宏远[1] 许子洋 朱海涛[2] 孙海平[2] 叶守开 代鹏 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014 [2]嘉源给排水有限公司,浙江嘉兴314000

出　　处：《中国给水排水》2018年第1期60-63,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07403-003)

摘　　要：嘉兴市某水厂采用臭氧-生物活性炭结合微絮凝强化过滤工艺,实现了出水浊度和2μm以上颗粒数分别稳定在0.1 NTU和30个/m L以下的良好效果。结合该水厂的净水工艺,考察了臭氧-生物活性炭工艺对微絮凝强化过滤工艺的影响。结果表明,臭氧-生物活性炭工艺去除了大量有机物,影响了胶体的稳定性,有利于微絮凝强化过滤工艺对浊度与颗粒物的去除。臭氧-生物活性炭工艺出水Zeta电位处于-5~0 m V范围内,粒径为5~20μm的大颗粒数量减少、粒径为2~5μm的小颗粒数量上升,总颗粒数和浊度上升,经微絮凝和砂滤池处理后,Zeta电位进一步上升直至接近于零,水中颗粒物与浊度被大幅去除。After the micro-flocculation and enhanced filtration process were combined with ozone/ BAC process in a waterworks in Jiaxing, an excellent treatment result was achieved, in which the turbidity of the effluent was below 0.1 NTU and the number of particles （ 〉 2 μm） was within 30 p/mL. Combined with the process of the waterworks, influence of O3/BAC on the micro-flocculation and the enhanced filtration was investigated. The results showed that the removal of substantial amount of organic compounds affected the stability of colloidal particles in the O3/BAC process and it was beneficial to the removal of turbidity and particle in the micro-flocculation and enhanced filtration process. The Zeta potential of the O3/BAC effluent was in a range from - 5 to 0 mV. The large particle of 5 - 20 μm in diameter was reduced, and the small particle of 2 - 5 μm in diameter was increased. The total number of particles and the turbidity of effluent were increased. After the micro-flocculation and the sand filter process, the Zeta potential further increased to close to zero, and the total number of particles and turbidity were removed substantially.

关 键 词：臭氧 生物活性炭 微絮凝 强化过滤 ZETA电位 

分 类 号：TU991[建筑科学—市政工程]