二氯异氰脲酸钠和三氯异氰脲酸对棕囊藻细胞去除的研究

研究了二氯异氰脲酸钠和三氯异氰脲酸对球形棕囊藻的灭杀和控制作用,及其投药时间对除藻效果的影响,并比较2种药剂的除藻效果,初步探讨了除藻机理.结果表明,这2种除藻剂可以缓释次氯酸,提高其稳定性,有较长的药效期.当有效氯浓度达到4.5mg/L时,2种药剂均能有效地控制和灭杀球形棕囊藻,具有高效、低毒的优点.有效氯浓度为5.0mg/L,藻细胞去除率在24h可达到90%以上.在等于和大于5.0mg/L有效氯浓度时,三氯异氰脲酸的除藻效果优于二氯异氰脲酸钠,通过对2种药剂除藻率的t检验进一步证实了这一结论.

Sodium Dichlorinated Isocyanuric Acid and Trichloroisocyanuric Acid for Removing Cells of Phaeochystis globosa

Removal and control of Phaeochystis globosa cells by sodium dichlorinated isocyanuric acid and trichloroisocyanuric acid were studied.Removal efficiency of the two algaecides was contrasted and removal mechanism was also discussed.The results suggest both of the algaecides have excellent ability to remove and control Phaeochystis globosa cells.Hypochlorous acid is released slowly by the two algaecides and maintains it's stabilization.The effective concentration of available chlorine is 4.5mg/L.The removal efficiency is more than 90% within 24 hours at the available chlorine's dosage of 5.0mg/L.Trichloroisocyanuric acid could remove Phaeochystis globosa cells more effectively than sodium dichlorinated isocyanuric acid when concentration of available chlorine was more than 5.0mg/L.The conclusion was identified by t test of available chlorine and removal efficiency.