منابع مشابه
Effects of Drinking-Water Filtration on Cryptosporidium Seroepidemiology, Scotland
Continuous exposure to low levels of Cryptosporidium oocysts is associated with production of protective antibodies. We investigated prevalence of antibodies against the 27-kDa Cryptosporidium oocyst antigen among blood donors in 2 areas of Scotland supplied by drinking water from different sources with different filtration standards: Glasgow (not filtered) and Dundee (filtered). During 2006-20...
متن کاملInvestigation of natural biofilms formed during the production of drinking water from surface water embankment filtration.
Populations of bacteria in biofilms from different sites of a drinking water production system were analysed. Polymerase chain reaction (PCR) and denaturing gradient gel electrophoresis (DGGE) analyses revealed changing DNA band patterns, suggesting a population shift during bank filtration and processing at the waterworks. In addition, common DNA bands that were attributed to ubiquitous bacter...
متن کاملPolyaluminium chloride as an alternative to alum for the direct filtration of drinking water.
The efficiency of various polyaluminium chloride coagulants (PACls) was compared to the efficiency of aluminium sulfate (alum) in the coagulation-flocculation process preceding direct filtration in drinking water treatment. The comparative study consisted of two separate yet complementary series of experiments: the first series included short (5-7 h) and long (24 h) filter runs conducted at a p...
متن کاملTotal coliform detection in drinking water: comparison of membrane filtration with Colilert and Coliquik.
The Colilert (CL) and Coliquik (CQ) systems were compared in a presence-absence format against the Standard Methods membrane filtration (MF) technique to determine whether differences existed in total coliform detection. Approximately 750 water samples were collected from distribution systems, covered and uncovered storage reservoirs, well sites, and the influent to drinking water treatment pla...
متن کاملOptimization of a Membrane Filtration Process for Drinking Water Treatment Using Fluorescence-Based Measurements
Membrane fouling control is of paramount importance for sustainable operation of membranebased drinking water treatment processes. Natural organic matter (NOM) is considered as the major membrane foulant and therefore its characterization is important for implementing fouling control strategies. This study proposes a fluorescence-based modeling approach for estimating and predicting the fouling...
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ژورنال
عنوان ژورنال: Public Health
سال: 1915
ISSN: 0033-3506
DOI: 10.1016/s0033-3506(15)80513-7