煤基活性炭在臭氧-生物活性炭净水工艺中的应用及展望  

Application and prospect of coal-based activated carbon in O_(3)-biologicalactivated carbon of water purification process

作　　者：李秀春 LI Xiuchun(China Coal Huali Energy Holding Co.,Ltd.;Beijing 100013,China;China Coal Huali Xinjiang Carbon Technology Co.,Ltd.,Hami 839000,China)

机构地区：[1]中煤华利能源控股有限公司,北京200240 [2]中煤华利新疆炭素科技有限公司,新疆哈密839000

出　　处：《洁净煤技术》2023年第8期84-94,共11页Clean Coal Technology

基　　金：中煤集团重点科技资助项目(20223CY045)。

摘　　要：水源水污染的加剧及用水标准的提高,使高效、经济的臭氧-生物活性炭(O_(3)-Biological Activated Carbon,O_(3)-BAC)饮用水深度净化工艺应用更加广泛。基于O_(3)-BAC工艺及净化机制,讨论煤基活性炭的作用和失效判断方法,分析净水用活性炭关键影响因素。结合煤基压块活性炭的生产工艺、所用原料煤及配煤调节孔结构的研究现状,展望了煤基活性炭在O_(3)-BAC净水工艺中的发展趋势。活性炭在O_(3)-BAC工艺中具有吸附、协同及生物载体作用,对溶解性有机物、异味和消毒副产物都有较好的净化效果。漂浮率、强度、装填密度及孔结构是O_(3)-BAC用活性炭关键指标,压块活性炭孔隙可调、强度高、漂浮率低,表面粗糙截污能力强,依托国内稀缺的原料煤资源生产的活性炭有望满足O_(3)-BAC工艺对活性炭组成性能指标的严苛要求。由于利用配煤技术很难在工业生产规模上准确、量化地调控活性炭孔结构,O_(3)-BAC滤池中采用活性炭混配技术是目前可行的解决方案,值得进一步研究。此外,现有的活性炭标准体系尚不能全面涵盖生产、应用的各个环节,需尽快研究制定滤池反冲洗、活性炭服务期限、再生技术指标等标准。The intensification of water pollution and the improvement of water quality standards make the efficient and economic O_(3)-Biological Activated Carbon(O_(3)-BAC)drinking water advanced purification process has been more and more widely used.Based on O_(3)-Biological Activated Carbon process and purification mechanism,the role of coal-based activated carbon were discussed,and the key influencing factors of activated carbon for water purification were analyzed.Based on the production process of coal-based briquetted activated carbon,the research status of the pore regulation,the development trend of coal-based activated carbon in O_(3)-BAC water purification process was discussed.Activated carbon plays an adsorption,synergistic and biological carrier role in the O_(3)-BAC process,which has better purification effect on dissolved organic compounds(DOC),on odor and disinfection by-product(DBP).Flotation ratio,hardness,loading density and pore structure are the key indexes of activated carbon for water purification,Adjustable pore,high hardness,low flotation ratio,rough surface with high interception capacity of briquetted activated carbon,and on the scarce domestic raw material coal resources,it is expected to manufacture activated carbon products that can fully meet the stringent requirements of O_(3)-BAC process for composition performance index.Since it is still difficult to quantify and accurately regulate the pore structure of activated carbon by coal blending technology in actual production,the mixing technology of activated carbon in O_(3)-BAC filter is a feasible solution at present,which is worthy of further in-depth study.In addition,the existing activated carbon standard system does not yet fully cover all aspects of production and application.It is necessary to study and formulate standards stepping up for filter backwashing,service life of activated carbon and regeneration technical index.

关 键 词：煤基活性炭 臭氧-生物活性炭 净水 关键指标 混配技术 

分 类 号：X703[环境科学与工程—环境工程]