三种河蚌对富营养化水体的处理效果研究

Study on the treatment effect of three kinds of mussels on the treatment of eutrophic water

研究了背角无齿蚌(Anodonta woodiana)、褶纹冠蚌(Cristaria plicata)和三角帆蚌(Hyriopsis cumingii)幼蚌对富营养化水体中总氮、总磷、氨氮、COD、悬浮物的处理效果。结果表明,幼体河蚌均能有效去除水体中的悬浮物,提高水体的透明度;褶纹冠蚌对COD、NH3-N和浊度的去除率最高,分别达到36.45%、89.68%和56.24%;三角帆蚌对TN的去除率最高,达到85.52%;背角无齿蚌对TP的去除率最高,达到38.00%;试验结束后测量河蚌湿重发现试验期间河蚌几乎没有生长。

The effects of Anodonta woodiana,Cristaria plicata,Hyriopsis cumingii on the removal efficiencies of chemical oxygen demand(COD),total phosphorus(TP),total nitrogen(TN),ammonia nitrogen(NH3-N)and turbidity in eutrophic water were studied.The results indicated that Anodonta woodiana,Cristaria plicata and Hyriopsis cumingii could remove the total suspended substrance(TSS)efficiently,improving the transparency of the water.The removal efficiencies of COD,NH3-N and tuibidity by Cristaria plicata were highest,reaching 36.45%,89.68%and 56.24%,respectively.The removal efficiency of TN by Anodonta woodiana was highest,reaching 85.52%.The removal efficiency of TP by Hyriopsis cumingii was highest,reaching 38.00%.The wet weights of Anodonta woodiana,Cristaria plicata and Hyriopsis cumingii were weighted at the end of the experiment to find that they all didn’t grow in the experiment period.