海水中FeCl_3残留对PESA阻垢性能影响初探  

EFFECT OF FeCl_3 COAGULANT IN SEAWATER ON THE SCALE INHIBITION PERFORMANCE OF PESA

作　　者：王印忠[1] 熊婷[1] 张连强[1] 樊利华[1] 陈冲[1] 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《水处理技术》2013年第3期16-18,22,共4页Technology of Water Treatment

基　　金：海洋公益性行业科研专项经费项目(201005023-1);淡化所基本科研业务费资助项目(G2011-19)

摘　　要：联合使用混凝沉淀烧杯试验和静态阻垢试验考察了海水环境中三氯化铁(FeCl3)残留对聚环氧琥珀酸(PESA)阻垢性能的影响。结果表明,浓缩倍数为1.5和2.0时,FeCl3残留不仅能够引起沉淀出水总铁含量超标,而且还对PESA的阻垢性具有阻碍作用。FeCl3残留浓度越高,PESA投加浓度越少,这种阻碍作用越显著;同时,FeCl3残留还能在加热浓缩过程中形成利于微生物孳生的絮体团块,增加了成垢和腐蚀的可能性。The effect of FeCl3 coagulant in seawater on the scale inhibition performance of polyepoxysuccinic acid（PESA） was investigated with combination of flocculation-sedimentation beaker test and static scale test.The results show that when cycle of concentration were 1.5 and 2.0 respectively,the residual of FeCl3coagulant not only made the total iron concentration beyond standard limit,but also reduced the scale inhibition performance of PESA.The more higher the residual of FeCl3coagulant concentration was and the more lower the PESA dosage was,the worse boviously the scale inhibition performance was.At the same time,the residual of FeCl3coagulant will form microbial flocculate conglomeration during the heating and concentration process,which could result in metallic corrosion and slime easily.

关 键 词：海水循环冷却 三氯化铁 聚环氧琥珀酸 阻垢 

分 类 号：TQ085.47[化学工程]