新型聚酰胺复合正渗透膜对重金属的脱除效果
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摘要
以新型聚酰胺复合正渗透膜的2种膜方位[膜的活性层朝向原料液(即AL-FS模式)和膜的活性层朝向汲取液(即AL-DS模式)]对5种不同的重金属原料液进行处理。结果表明,在AL-DS模式下各处理的正向水通量都高于在AL-FS模式下的,且同一重金属原液在2种模式下水通量差异极显著(P<0.01)。反向盐通量表现为AL-DS模式高于AL-FS模式,但只有砷、汞的反向盐通量在2种模式下差异显著(P<0.05)。对于同一重金属原液,J_s/J_w值表现为AL-DS模式均低于AL-FS模式,且2种模式下的J_s/J_w值都低于0.02。2种模式下对汞的拦截效果都很好,拦截率分别达到99.50%(AL-DS模式)、90.66%(AL-FS模式),其中以铅、砷、汞为原液时,重金属拦截率表现为AL-DS模式高于AL-FS模式,以镉、铬为原液时结果相反。
引文
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[3]许春玲. 聚酰胺中空纤维正渗透复合膜的制备及性能研究[D]. 青岛:中国海洋大学,2013.
[4]刘蕾蕾,王铎,汪锰,等. 三醋酸纤维素正渗透膜制备过程中影响因素的研究[J]. 膜科学与技术,2011,31(1):77-83.
[5]李刚. 正渗透膜的制备与应用[D]. 青岛:中国海洋大学,2014.
[6]解利昕,辛婧,解奥. 三乙酸纤维素正渗透膜的制备与性能[J]. 化工进展,2014,33(10):2700-2706.
[7]Chung T S,Zhang S,Wang K Y,et al. Forward osmosis processes:yesterday,today and tomorrow[J]. Desalination,2012,287:78-81.
[8]肖维溢,管盼盼,王铎. 新型聚酰胺复合正渗透膜的制备与表征[J]. 功能材料,2016(增刊1):127-134.
[9]Phuntsho S,Shon H K,Hong S,et al. A novel low energy fertilizer driven forward osmosis desalination for direct fertigation:evaluating the performance of fertilizer draw solutions[J]. Journal of Membrane Science,2011,375(1/2):172-181.
[10]Phuntsho S,Shon H K,Majeed T,et al. Blended fertilizers as draw solutions for fertilizer-drawn forward osmosis desalination[J]. Environmental Science & Technology,2012,46(8):4567-4575.
[11]吴子焱. 无机正渗透膜的制备及去除水中的Cd2+效能的研究[D]. 哈尔滨:哈尔滨工业大学,2015.
[12]林红军,陈建荣,陆晓峰,等. 正渗透膜技术在水处理中的应用进展[J]. 环境科学与技术,2010,33(12F):411-415.
[13]王毅,谢朝新,周宁玉,等. 正渗透膜活性层朝向对正渗透过程的影响研究[J]. 四川大学学报(工程科学版),2014,46(增刊2):49-53.
[14]Jin X,She Q H,Ang XL,et al. Removal of Boron and Arsenic by forward osmosis membrane:influence of membrane orientation and organic fouling[J]. Journal of Membrane Science,2012,389:182-187.
[15]Zhao S F,Zou L D,Mulcahy D. Effects of membrane orientation on process performance in forward osmosis applications[J]. Journal of Membrane Science,2011,382(1/2):308-315.
[16]刘志强,李慧,程一桥,等. 正渗透膜分离技术处理生活污水的实验研究[J]. 水处理技术,2016,42(12):68-71.
[17]Kong F X,Yang H W,Wang X M,et al. Rejection of nine haloacetic acids and coupled reverse draw solute permeation in forward osmosis[J]. Desalination,2014,341:1-9.
[18]Zheng Y,Huang M H,Chen L,et al. Comparison of tetracycline rejection in reclaimed water by three kinds of forward osmosis membranes[J]. Desalination,2015,359:113-122.
[19]张高旗,刘海宁,张凯松. 正渗透处理生活污水过程中的膜污染研究[J]. 中国环境科学,2013,33(12):2170-2175.