自然循环炭系载体系统用于城镇生活污水处理的试验  

Experiment of Natural Circulation Carbon-Based System in Urban Domestic Wastewater Treatment

作　　者：程晓夏 黄剑 郑力 邹刚 刘菲 CHENG Xiaoxia;HUANG Jian;ZHENG Li;ZOU Gang;LIU Fei(Hubei Automation Research Institute Co.,Ltd.,Wuhan430072,China)

机构地区：[1]湖北省自动化研究所股份有限公司,湖北武汉430072

出　　处：《净水技术》2022年第11期62-69,共8页Water Purification Technology

基　　金：湖北省科技发展专项:自然循环碳系载体技术在黑臭水体治理工程中的应用(KJFZ2019007)。

摘　　要：自然循环炭系载体(NCC)系统由自然循环系统技术发展而来,以生物酶木炭为载体,对生活污水中的COD_(Cr)、氨氮和TP有良好的处理效果。文章使用NCC系统对某城镇生活污水进行处理,持续1年监测进出水水质,并对系统中循环式活性污泥法(CASS)单元和NCC单元的独立处理效果和贡献进行分析。结果表明,经处理后进入河道的生活污水,其COD_(Cr)、氨氮和TP的平均去除率分别达到86.33%、99.00%和97.30%,出水水质指标稳定达到且远远高于《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A排放标准。组合工艺中,CASS贡献约70.00%的平均削减量,NCC系统对氨氮和TP的独立处理效果达95.00%以上,COD_(Cr)和TN的去除率也可达到60.00%~76.00%,将CASS出水标准提升至地表“准Ⅳ类”(除TN外,其他指标满足Ⅳ类标准),适用于生活污水的深度处理。The natural recirculation carbon-based(NCC)system is developed from the natural recirculation system technology,using bioenzyme charcoal as a carrier,and has good treatment effects on COD_(Cr),ammonia nitrogen and TP in domestic wastewater.In this study,the NCC system was used to treat domestic wastewater in a town,and the influent and effluent quality were monitored for one year,and the independent treatment effects and contributions of cyclic activated sludge system(CASS)and NCC units in the system were analyzed.The results showed that the removal rates of COD_(Cr),ammonia nitrogen and TP of domestic wastewater entering the river reached 86.33%,99.00%and 97.30%,respectively,and the effluent quality indices steadily reached and were much higher than the first class A criteria of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918—2002).In the combined process,CASS contributed about 70.00%of the average reduction,the independent treatment effect of NCC system on ammonia nitrogen and TP reached more than 95.00%,and COD_(Cr) and TN also could reach 60.00%~76.00%,which improved the CASS effluent quality to the“ground standardⅣ”(other indices can meetⅣgrade standard except TN),and it is suitable for the deep treatment of domestic wastewater.

关 键 词：自然循环炭系载体(NCC)系统 生活污水 填料 深度处理 生物酶木炭 循环式活性污泥法(CASS) 

分 类 号：TU992[建筑科学—市政工程]