微涡流协同排泥水回流混凝增效中试研究  

Pilot-scale Study on Coagulation Synergism of Micro-vortex Synergistic Sludge Water Reflux

作　　者：童祯恭[1] 钟赐龙 刘卓尧 朱新良 TONG Zhengong;ZHONG Cilong;LIU Zhuoyao;ZHU Xinliang(School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013

出　　处：《水处理技术》2021年第10期75-79,共5页Technology of Water Treatment

基　　金：国家自然科学基金(52060006);江西省科技厅重点研发计划一般项目(20192BBGL70046)。

摘　　要：针对微涡流技术的优化问题开展了微涡流协同排泥水回流中试。结果表明,当保证微涡流絮凝时间为总絮凝时间的前3/4时,其优化工况下处理水量可达7 m^(3)/h,投药量为25 mg/L,排泥水回流体积比为4%。在此工况下相比于原装置,可以提升30%以上的处理水量,节省20%的投药量,浊度和UV254最高分别下降68%和40%,CODMn最高去除率为50%,并且不会造成色度、金属及微生物的大量富集,能有效促进大颗粒絮体的形成;对水中颗粒分子的去除效果良好,能适应对于低温低浊水的处理,可为国内小型及乡镇水厂的提标改造提供借鉴和参考。In order to optimize the micro-vortex technology, a pilot study of the micro-vortex synergistic sludge water reflux was carried out. The results showed that, when the micro-vortex coagulation time was guaranteed to be the first three-quarters of the total coagulation time, under the optimal conditions, the treated water volume could reach 7 m^(3)/h, the dosage was 25 mg/L, and the sludge water reflux volume was 4%. Under this condition,compared with the original device, it could increase the treated water volume by about 30% and save 20% of the dosage. The highest turbidity and UV254 decreased by 68% and 40% respectively, the highest removal rate of CODMnwas 50%, and would not cause a large number of enrichment of chromaticity,metals and microorganisms, and could effectively promote the formation of large-particle flocs. The removal effect of particles in water was good, and it can be adapted to the treatment of low temperature and low turbidity water, which can provide reference for the upgrading and transformation of domestic small and township water plants.

关 键 词：微涡流絮凝 排泥水回流 协同作用 

分 类 号：TU991.22[建筑科学—市政工程]