Abramovich B, Lura M C, Carrera E, Gilli M I, Haye M A, Vaira S
Sección Aguas, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Paraje El Pozo, C.C. 242, 3000 Santa Fe, Argentina.
Rev Argent Microbiol. 2004 Apr-Jun;36(2):92-6.
Cryptosporidium is one of the microorganisms of main concern from the point of view of Public Health, being a priority problem for water treatment plants and water regulatory institutions. Due to its small size and resistance to chlorination, Cryptosporidium removal during the process of drinking water treatment is a hard task. The effectiveness of different coagulants commonly used in the process of removal of oocysts was analyzed. The technique used was the Jar Test. It was found that: 1) coagulants with the addition of polimeric coadjuvants produce over 2 logs of oocyst removal; 2) a low value in turbidity does not necessarily mean optimal parasite removal, and 3) the addition of polyelectrolites to ferric chloride diminishes variability, both in final turbidity and Cryptosporidium removal.
隐孢子虫是从公共卫生角度来看主要关注的微生物之一，是水处理厂和水监管机构的一个优先问题。由于其体积小且对氯化有抗性，在饮用水处理过程中去除隐孢子虫是一项艰巨的任务。分析了在去除卵囊过程中常用的不同混凝剂的有效性。所使用的技术是烧杯试验。结果发现：1）添加聚合助凝剂的混凝剂可使卵囊去除率超过2个对数；2）低浊度值不一定意味着最佳的寄生虫去除效果，以及3）向氯化铁中添加聚合电解质可降低最终浊度和隐孢子虫去除率的变异性。
