Ferric sulphate flocculation as a concentration method for Giardia and Cryptosporidium in filter backwash water
نویسندگان
چکیده
منابع مشابه
[Cryptosporidium and Giardia as water contaminant pathogens in Hungary].
INTRODUCTION Many species of Cryptosporidium, and two assemlages of Giardia duodenalis cause typically acute diaorrhoea in human. The oocysts and cysts of these parasites excreted in faeces are capable of infecting other hosts and those are environmentally stable. AIM The aims of the study were to evaluate the prevalence and genotypes of Cryptosporidium and Giardia species from different wate...
متن کاملDrinking water treatment processes for removal of Cryptosporidium and Giardia.
Major waterborne cryptosporidiosis and giardiasis outbreaks associated with contaminated drinking water have been linked to evidence of suboptimal treatment. Cryptosporidium parvum oocysts are particularly more resistant than Giardia lamblia cysts to removal and inactivation by conventional water treatment (coagulation, sedimentation, filtration and chlorine disinfection); therefore, extensive ...
متن کاملCryptosporidium and Giardia as foodborne zoonoses.
Cryptosporidium and Giardia are major causes of diarrhoeal disease in humans, worldwide and are major causes of protozoan waterborne diseases. Both Cryptosporidium and Giardia have life cycles which are suited to waterborne and foodborne transmission. There are 16 'valid'Cryptosporidium species and a further 33+ genotypes described. Parasites which infect humans belong to the Giardia duodenalis...
متن کاملAutomatic Cryptosporidium and Giardia viability detection in treated water
In the automatic detection of Cryptosporidium and Giardia (oo)cysts in water samples, low contrast and noise in the microscopic images can adversely affect the accuracy of the segmentation results. An improved partial differential equation (PDE) filtering that achieves a better trade-off between noise removal and edge preservation is introduced where the compass operator is utilized to attenuat...
متن کاملCryptosporidium and Giardia Distribution in Water: Re-Evaluation
The data and the analysis applied to it in a 1996 paper on the statistical distribution of Cryptosporidium in a reservoir are re-examined with the objective of clarifying general understanding of the way in which Cryptosporidium oocysts and Giardia cysts are distributed in water. General objectives of monitoring for these protozoan parasites are summarized along with essential assumptions used ...
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ژورنال
عنوان ژورنال: Water Practice and Technology
سال: 2021
ISSN: 1751-231X
DOI: 10.2166/wpt.2021.021