三氯化铁法絮凝鱼糜漂洗有机废水的机理研究  

Study on the Mechanism of Flocculating Surimi Wastewater with Ferric Chloride

作　　者：宋美[1] 娄永江[1] 严小军[1] SONG Mei;LOU Yongjiang;YAN Xiaojun(School of Marine Science,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学海洋学院,浙江宁波315211

出　　处：《食品与生物技术学报》2018年第8期875-879,共5页Journal of Food Science and Biotechnology

基　　金：国家海洋局海洋公益性项目(201305013-3);宁波市重大农业科研攻关项目(2014C10034)

摘　　要：以鱼糜漂洗废水为处理对象,采用zeta电位仪和扫描电镜,测得不同pH下,絮凝悬浮液的zeta电位值及絮凝沉淀物的表面结构,获得了三氯化铁与鱼糜漂洗废水中蛋白质的絮凝机理。结果表明:pH 3~5之间蛋白质失稳由压缩双电层机理和电中和机理起作用,pH 5~6之间蛋白质的脱稳絮凝主要取决于电中和机理,pH 6~8之间以吸附架桥为主要絮凝机理,且存在网捕卷扫作用,pH 9~10主要是生成Fe(OH)3沉淀的网捕卷扫作用实现了对蛋白质的絮凝。The mechanism of flocculation was investigated by zeta potential of surimi waste-water and scanning electron microscope(SEM)images of flocs at different pH.Results showed that at pH 3-5,the mechanism of charge neutralization and double layer compression mainly lead to protein instability;at pH 5-6,protein was flocculated mainly by the mechanism of charge neutralization;at pH 6-8,the mechanism of flocculating mainly depends on adsorption bridging and sweep flocculation;at pH 9-10,sweep flocculation was the main mechanism of flocculating surimi waste-water with ferric chloride.

关 键 词：三氯化铁 鱼糜漂洗废水 絮凝机理 ZETA电位 扫描电镜 

分 类 号：X703[环境科学与工程—环境工程]