Effect of two-phase contact oxidation on enhanced removal of contaminants in wastewater from copper mine
An improved two -phase contact oxidation adsorption integrated bioreactor (CABR) was used to treat mixed wastewater from copper mine. The CABR was made up of a biofilm reactor and an activated carbon reactor. Polyacrylonitrile balls (20 mm diameter, 260 m2/m3 specific surface, 90％ porosity) were filled into the contact oxidation reactor as biofilm attaching materials. Hydraulic residence times (HRT) of the two contact oxidation reactor were 1.5 hr and 1.2 hr, separately. Relevant ratio of aeration and water of the two contact oxidation were 5:1 and 3:1. From the long-term operation, the average removal efficiencies of chemical oxygen demand (COD) and ammonia nitrogen (NH/-N) were 84.1％ and 71.3％ respectively. Two -phase contact oxidation can achieve the higher removal efficiency and the lower power consumption. Additionally, the activated carbon reactor can significantly remove heavy metal.
Gang Li Keqing Li Lili Liang
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
国际会议
哈尔滨
英文
1404-1407
2011-03-26（万方平台首次上网日期，不代表论文的发表时间）