菲律宾蛤仔对海水悬浮泥沙的絮凝效果及机理研究  

Flocculation Effects and Mechanisms of Ruditapes philippinarum on Suspended Sediment in Seawater

作　　者：林朋 戎振英 刘行平 葛亚明 刘俊稚 穆军 LIN Peng;RONG Zhen-ying;LIU Xing-ping(School of Marine Science and Technology of Zhejiang Ocean University,Zhoushan 316022;Zhoushan Sewage Treatment Co,Ltd,Zhoushan 316000,China)

机构地区：[1]浙江海洋大学海洋科学与技术学院,浙江舟山316022 [2]舟山市污水处理有限公司,浙江舟山316000 [3]浙江海洋大学石油化工与环境学院,浙江舟山316022

出　　处：《浙江海洋大学学报（自然科学版）》2022年第6期524-528,共5页Journal of Zhejiang Ocean University：Natural Science

基　　金：国家自然科学基金(31470540);浙江省自然科学基金(LQ17C030001)。

摘　　要：为了解菲律宾蛤仔活体对海水悬浮泥沙的净化潜力,本研究考察了其对模式对象高岭土和实际悬浮泥沙的絮凝效果,并探讨了相关机理。结果表明:菲律宾蛤仔明显促进了海水体系中高岭土的絮凝沉降,100 min后的絮凝率达到97.3%,比自然沉降提高10.9%;菲律宾蛤仔对海水悬浮泥沙的絮凝效果显著,60 min后的絮凝率高达自然沉降的4.81倍(95.7%vs 19.9%);进一步机理分析结果表明,菲律宾蛤仔对高岭土和悬浮泥沙的絮凝机理并非常规吸附电中和,而很可能与其滤食行为有关,且其滤食吸进的泥沙很快被排出体外沉降,并在排出过程中通过网扫捕集作用使水中更多悬浮泥沙共同絮凝。本研究能够为利用菲律宾蛤仔活体对悬浮泥沙污染海域进行水质净化提供科学指导和数据支持。To understand the purification potential of living Ruditapes philippinarum for suspended sediment in seawater,the flocculation effect of R.philippinarum on kaolin and suspended sediment was investigated,and the related mechanisms was discussed.The results show that,the living R.philippinarum significantly promoted the flocculation of kaolin in seawater,and the flocculation rate reached 97.3%within 100 min,which was 10.9%higher than that of its natural sedimentation;the clams also showed remarkable flocculation improvement on suspended sediment in seawater,with the flocculation rate being 4.81 times of the self-natural sediment within 60 min(95.7%vs 19.9%).Further analysis showed that the flocculation mechanisms of the clams on kaolin and suspended sediment was not conventional adsorption and electric neutralization,but probably related to its filtering behavior.Moreover,the filtering-sucked sediment would be quickly discharged and settled outside,and more suspended sediment would be flocculated together through the action of net scanning and trapping during the discharging process.This study can provide scientific guidance and data support for using R.philippinarum to purify seawaters with suspended sediment pollution.

关 键 词：菲律宾蛤仔 滤食行为 悬浮泥沙 絮凝机理 

分 类 号：Q599[生物学—生物化学]