环境工程学报2017，Vol.11Issue(4)：2426-2432,7.DOI:10.12030/j.cjee.201510127
微气泡臭氧强化污泥碳源的释放过程
Acceleration of carbon source solubilization from sludge using microbubble ozonation
摘要
Abstract
Carbon released from sludge by ozonation could be utilized in the low-carbon wastewater treatment process.To enhance the decomposition efficiency of ozonation,a microbubble ozonation treatment was implemented.The results showed that soluble chemical oxidation demand(SCOD) increased to 1 964 mg · L-1 for an ozone dose of 200 mg O3 · (g SS)-1 by microbubble ozonation,which was 2.1 times higher than that by normal bubble ozonation.The sludge disintegration degree (DDcoD) was 41.5％ in the microbubble process,while it was 18.1％ in the normal bubble process.The optimal operation conditions of microbubble ozonation were determined to be as follows:ozone concentration of 100.0 mg · L-1,initial sludge concentration of 5 g · L-1,and initial sludge pH of 9.SCOD increased to 1 923 mg · L-1 and DDcoD was 41.2％ for an ozone dose of 160 mg O3 · (g SS)-1 under the optimal operation conditions.Compared with normal bubble ozonation,microbubble ozonation could improve the mass transfer efficiency and hydroxyl radical reaction intensity of ozone,which contributes to the solubilization of the carbon source from sludge.关键词
微气泡/臭氧处理/污泥/碳源释放Key words
microbubble/ozonation/sludge/carbon source solubilization分类
资源环境引用本文复制引用
王裕祥,黄祎晨,张鑫,朱南文,楼紫阳,袁海平..微气泡臭氧强化污泥碳源的释放过程[J].环境工程学报,2017,11(4):2426-2432,7.基金项目
国家水体污染控制与治理科技重大专项(2017ZX07204-001) （2017ZX07204-001）
