摘要
为考察膜粉末活性炭生物反应器(PAC-MBR)处理微污染原水的效能,向其中加入混凝剂(聚合氯化铝和三氯化铁)以及与混凝-沉淀、混凝-气浮联用,研究4种组合工艺对引黄水库水的除污染效能和膜污染状况,并与水厂常规工艺及超滤工艺进行比较.结果表明:各种组合工艺均可将出水浑浊度和颗粒数控制在0.02 NTU和50 mL-1以下,去除率分别达98%和95%以上;4种组合工艺出水UV254平均为0.043～0.045 cm-1,去除率分别为(18.28±9.35)%、(16.76±6.14)%、(3.23±1.26)%和(6.38±2.26)%;出水CODMn平均值在1.85～1.94 mg/L,去除率分别为(34.22±7.49)%、(33.20±6.99)%、(22.20±8.91)%和(41.72±14.25)%.各工艺对颗粒物质和有机物的去除效能均优于常规工艺,而同常规工艺+超滤膜出水基本相同.各工艺对氨氮的去除率在95%以上,且不存在亚硝酸盐氮积累的现象.在膜污染控制方面,混凝-沉淀以及混凝-气浮的效果较优,随后是三氯化铁,而投加聚合氯化铝的效果最差.
To investigate the efficiency of treating micro-polluted reservoir water from the Yellow River using PAC-MBR,four processes combined with coagulation（ployaluminium chloride and ferric chloride）,coagulation-sedimentation and coagulation-air flotation were discussed,from the view of pollutants removal and membrane fouling,comparison with conventional treatment process/＋UF were also made.The results showed that all these processes guaranteed the turbidity and particle counts of effluent at 0.02 NTU and lower than 50 mL-1,with the removal efficiency above 98% and 95%,respectively.The average effluent UV254 ranged between 0.043 and 0.045 cm-1,and the removal rate were（18.28±9.35）%,（16.76±6.14）%,（3.23±1.26）% and（6.38±2.26）%,respectively.The average effluent CODMn ranged from 1.85 to 1.94 mg/L,with removal efficiency of（4.22±7.49）%,（33.20±6.99）%,（22.20±8.91）% and（41.72±14.25）%,respectively.As for particulate and organic matter,the removal efficiencies of hybrid processes were superior to conventional treatment process and almost equal to UF membrane combined processes in Nanjiao Water Treatment Plant.The NH3-N removal was above 95%,and the accumulation of NO2--N was not found.Considering the effect of eliminating membrane fouling,coagulation-sedimentation and coagulation-air flotation effect were the best,followed by ferric chloride,but that of polyaluminium chloride was the worst.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2012年第12期25-31,共7页
Journal of Harbin Institute of Technology
基金
国家自然科学基金重点项目(51138008)
城市水资源与水环境国家重点实验室(哈尔滨工业大学)自主课题(2010DX01)
