氨氮浓度对活性炭深度处理工艺选择的影响  

Influence of Ammonia Nitrogen Concentration on Selection of Advanced Treatment Process with Activated Carbon

作　　者：孙光远[1] 孙巍[2] 

机构地区：[1]湖南城建职业技术学院设备工程系,湖南湘潭411101 [2]湖南城建职业技术学院机电工程系,湖南湘潭411101

出　　处：《中国给水排水》2007年第17期106-108,共3页China Water & Wastewater

摘　　要：以北江佛山段原水为处理对象,比较了活性炭吸附(GAC)和臭氧/生物活性炭(O3/BAC)两种深度处理工艺对氨氮的去除效果,并分析了预氯化对其处理效果的影响。结果表明,GAC和O3/BAC工艺均具有一定的耐氨氮冲击负荷能力。低氨氮浓度下,GAC和O3/BAC工艺对氨氮的去除率接近(约40%),并随着进水氨氮浓度的增大而增加;两者出水中的CHCl3浓度均超标,但O3/BAC的较低;综合考虑处理效果及成本,建议此时优先采用GAC工艺。高氨氮浓度下,O3/BAC工艺去除氨氮的效果显著优于GAC,经消毒后其出水中的CHCl3浓度也低于GAC的,故建议在该种原水水质下优先采用O3/BAC工艺。控制沉淀池出水余氯在合适的范围内,则预氯化对O3/BAC工艺的除污效果无影响。In the pilot-scale experiments of advanced treatment of raw water from Foshan section of North Pearl River, the removal efficiency of ammonia nitrogen by granular activated carbon （GAC） adsorption process and ozone/biological activated carbon （O3/BAC） process was compared, and the effect of pre-chlorination on the advanced treatment efficiency was analyzed. The results show that both GAC and O3/BAC process have some ability in resisting ammonia nitrogen shock loading. Under the low concentration of ammonia nitrogen, the average removal efficiency of GAC and O3/BAC processes is nearly the same （ about 40% ） , and the removal rate rises with the increasing of influent ammonia nitrogen concentration. The CHC13 concentration in the effluent of GAC and O3/BAC processes goes beyond the standard, but the CHC13 concentration in O3/BAC process is lower than that in GAC process. Considering the treatment efficiency and cost, GAC process is taken precedence of O3/BAC. Under the high concentration of ammonia nitrogen, the removal efficiency of O3/BAC process is higher than that of GAC obviously. The CHC13 concentration in the disinfected effluent of O3/BAC process is also lower than that in GAC process. In this case, using the O3/BAC process is better. When the residual chlorine concentration in the effluent of the settling tank is controlled within a suitable range, the pre-chlorination has no influence on O3/BAC process.

关 键 词：给水深度处理 活性炭吸附 臭氧/生物活性炭 氨氮 

分 类 号：TU991.2[建筑科学—市政工程]