SB12-6与海水淡化常用混凝剂和助凝剂的配伍性研究
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摘要
为探究非氧化性杀生剂SB12-6与常用混凝剂和助凝剂在海水中的配伍性,采用混凝沉淀烧杯试验考察了SB12-6单独投加以及分别与FeCl3、 PAC、 PAM联用时对沉淀后海水浊度的影响。试验结果表明:SB12-6在投加量小于60.0 mg/L时能够通过吸附架桥作用产生一定的混凝效果,但当其投加量超过60.0 mg/L时将由于位阻稳定效应使得混凝效果下降。当与FeCl3或PAC同时投加时, SB12-6不与FeCl3或PAC发生化学反应,在投加量小于60.0 mg/L时,可与FeCl3和PAC产生较好的协同性。SB12-6与PAM的配伍性不佳,二者同时投加时即使较小剂量也会造成海水预处理的混凝沉淀效果下降。
In order to study the compatibility between SB12-6 and common coagulants and coagulant aid in seawater, the seawater turbidity-removing performance of single SB12-6 and reagents of SB12-6 combined with FeCl3, PAC and PAM respectively, were investigated using coagulation sedimentation jar test. The test results showed that, SB12-6 could obtain certain coagulation effect through adsorption and bridging action when its dosage was lower than 60.0 mg/L, however, when the dosage was above 60.0 mg/L, the coagulation effect decreased because of the stabilizing effect of steric hindrance. Dosing SB12-6 into seawater with FeCl3 or PAC added simultaneously, there was no chemical reaction between SB12-6 and FeCl3 or PAC, when the SB12-6 dosage was lower than 60 mg/L, it could get good cooperativity with FeCl3 and PAC. As the compatibility between SB12-6 and PAM was poor, dosing the two reagents simultaneously will decrease the coagulation sedimentation effect of seawater pretreatment even with small dosage.
In order to study the compatibility between SB12-6 and common coagulants and coagulant aid in seawater, the seawater turbidity-removing performance of single SB12-6 and reagents of SB12-6 combined with FeCl3, PAC and PAM respectively, were investigated using coagulation sedimentation jar test. The test results showed that, SB12-6 could obtain certain coagulation effect through adsorption and bridging action when its dosage was lower than 60.0 mg/L, however, when the dosage was above 60.0 mg/L, the coagulation effect decreased because of the stabilizing effect of steric hindrance. Dosing SB12-6 into seawater with FeCl3 or PAC added simultaneously, there was no chemical reaction between SB12-6 and FeCl3 or PAC, when the SB12-6 dosage was lower than 60 mg/L, it could get good cooperativity with FeCl3 and PAC. As the compatibility between SB12-6 and PAM was poor, dosing the two reagents simultaneously will decrease the coagulation sedimentation effect of seawater pretreatment even with small dosage.
引文
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[3]王印忠,张连强,李雪,等.海水中聚合硫酸铁絮凝剂残留对SW203阻垢剂性能的影响研究[C]//中国海洋学会2013年学术年会文集. 2013:2170-2175.
[4]王印忠,张连强,李雪,等.铝系絮凝剂残留对SW203海水阻垢剂性能的影响[J].工业用水与废水, 2014, 45(2):57-61.
[5]李睿,陈新萍,高文宇.杀菌剂与油田助剂的配伍性[J].油气田地面工程, 2006, 25(11):53-53.
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[7]王香爱.壳聚糖季铵盐对高岭土悬浮液的絮凝处理[J].应用化工, 2008, 37(6):609-612.
[8]朱文亭.海水浊度特性和混凝机理的探讨[J].城市环境与城市生态, 1993, 6(4):7-10.
[9]朱磊,周桃玉.长链季铵盐的絮凝性能[J].化工环保, 2014,34(5):481-483.
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