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选用病毒MS2作为水中肠道病毒的指示病毒,高岭土和铜绿微囊藻分别作为无机颗粒物和有机颗粒物,研究颗粒物浓度、pH值、不同价态离子浓度、天然有机物(NOM)等水质条件下,无机(高岭土)、有机(铜绿微囊藻)颗粒物存在对病毒MS2存活的影响.结果表明,无机颗粒物高岭土对病毒MS2的存活无明显影响,但当水体钙硬度(钙离子产生的硬度)较大时,病毒MS2的表观存活量增加1个对数;铜绿微囊藻的存在会导致病毒MS2的存活量降低1个对数左右,但当溶液的pH值大于4.0或铜绿微囊藻的浓度小于1.0×106cells·L-1时,藻类对病毒的生存无明显影响;当水体钙硬度较大时,藻反而会增加病毒MS2的存活对数.因此在高浊水、高藻水中,水的钙硬度增加会使水体中病毒生存能力变强,进而增加饮用水的安全风险.
Virus MS2 was selected as the indicator virus of enterovirus in water, and kaolinite and Microcystis aeruginosa were used as inorganic particles and organic particles, respectively. Under the conditions of water, such as particle concentration, pH value, different valence state ion concentration and natural organic matter (NOM) (Kaolinite) and organic (Microcystis aeruginosa) particles on the survival of virus MS2.The results showed that the inorganic particle kaolin had no significant effect on the survival of virus MS2, but when the water hardness (calcium hardness) , The apparent viability of virus MS2 increased by one logarithm; the presence of Microcystis aeruginosa leads to a logarithmic decrease in the viability of virus MS2, but when the pH of the solution is greater than 4.0 or the concentration of Microcystis aeruginosa is less than 1.0 × 106cells · L-1, the algae had no significant effect on the survival of the virus.When the hardness of water was too high, the algae could increase the logarithm of survival of the virus MS2, so the calcium hardness of water increased in high turbidity and high algae water Will make the water in the virus survivability, thereby increasing the safety risk of drinking water.