scholarly journals Effect of oxygen on survival of faecal pollution indicators in drinking water

2004 ◽  
Vol 96 (5) ◽  
pp. 938-945 ◽  
Author(s):  
P. Roslev ◽  
L.A. Bjergbaek ◽  
M. Hesselsoe
Keyword(s):  
Drinking Water ◽  
Pollution Indicators ◽  
Faecal Pollution ◽  
Effect Of Oxygen

scholarly journals Contrasting occurrence of Chromobacterium violaceum in tropical drinking water springs of Uganda

2005 ◽  
Vol 3 (3) ◽  
pp. 229-238 ◽  
Author(s):  
Denis Byamukama ◽  
Frank Kansiime ◽  
Andreas H. Farnleitner ◽  
Martina Burtscher ◽  
Robert L. Mach ◽  
...  
Keyword(s):  
Drinking Water ◽  
Human Impact ◽  
Spring Water ◽  
Chromobacterium Violaceum ◽  
Sampling Occasion ◽  
Soil Layers ◽  
Pollution Indicators ◽  
Faecal Pollution ◽  
Water Springs ◽  
Faecal Indicators

Occurrence of Chromobacterium violaceum in six protected drinking water springs in Uganda was investigated. C. violaceum showed a contrasting occurrence, which was independent of human impact as assessed by faecal pollution indicators. It was isolated from two springs (S1 and S2) that were located close to each other (3 km) but not in the rest. In S1 C. violaceum was continuously detected, in concentrations ranging from 6 to 270 cfu 100 ml−1, while in S2 it was detected on only one sampling occasion. C. violaceum was never detected in the investigated upper soil layers (down to 15 cm) in the immediate surroundings (50 m radius) of the springs, despite continued isolation of faecal indicators. The results of the study indicate that C. violaceum may not be ubiquitous in spring water, but could occur in significant numbers in particular potable groundwaters as an autochthonous member.

Faecal pollution indicators in the Terra Nova Bay (Ross Sea, Antarctica)

1997 ◽  
Vol 34 (11) ◽  
pp. 908-912 ◽  
Author(s):  
V. Bruni ◽  
T.L. Maugeri ◽  
L. Monticelli
Keyword(s):  
Ross Sea ◽  
Pollution Indicators ◽  
Faecal Pollution ◽  
Terra Nova Bay ◽  
Terra Nova

scholarly journals Hygienic Assessment of the Influence of Oxygen-Enriched Drinking Water on the Functional State of the Main Systems of the Human Body

2020 ◽  
pp. 16-21
Author(s):  
LV Kirichenko ◽  
AI Mikov ◽  
TA Sannikova ◽  
DYu Sosnin
Keyword(s):  
Drinking Water ◽  
Human Body ◽  
Life Support ◽  
Venous Blood ◽  
Statistical Processing ◽  
The Body ◽  
Step Test ◽  
Effect Of Oxygen ◽  
Microsoft Office ◽  
Physiological Systems

Introduction. Drinking water is a necessary element of life support of the population. Many studies conducted around the world have established a relationship between the quality of drinking water and public health. On the basis of the Perm State Medical University studies were conducted to assess the effects of oxygen-enriched drinking water on human respiratory, cardiovascular and nervous systems as well as serum erythropoietin (EPO) levels. The objects of study were 32 volunteers (7 men and 25 women) aged 18 to 28. The purpose of the research was to study the effect of oxygen-enriched drinking water on the basic physiological systems of the human body and serum EPO levels of healthy volunteers. Methods. We applied the following research methods: physiological methods were used thrice (on the first, tenth and twenty-first days) to test the cardiovascular (heart rate, SBP, DBP, Kerdo index, Harvard step test), respiratory (BH, JELL, JEL, Stange and Gencha tests) and nervous (Anfimov test, SAN test, ShAS test) systems; laboratory tests of serum EPO levels in venous blood of the volunteers; and statistical methods (statistical processing was performed using Microsoft Office Excel 2007 and STATISTICA V. 7 software package (StatSoft Inc., USA). Results. The use of oxygenated water helps increase functional and reserve capabilities of the basic physiological systems of the body and improve tissue oxygenation.

Organic Micropollution of Potable Water Supplies: Indirect versus Direct Reuse

1982 ◽  
Vol 14 (4-5) ◽  
pp. 365-380
Author(s):  
J F J van Rensburg ◽  
S J Theron ◽  
A J Hassett ◽  
P G van Rossum
Keyword(s):  
Drinking Water ◽  
Potable Water ◽  
Organic Pollution ◽  
Pollution Indices ◽  
Organic Micropollutants ◽  
Water Supplies ◽  
Faecal Pollution ◽  
Direct System ◽  
Reuse System

The quality of the drinking-water produced by an indirect reuse system and a direct reuse system was evaluated with respect to organic micropollutants. The quality of the water produced by the direct system was superior to that produced by the indirect system. No adequate multiple barriers against organic and bacteriological contaminants were found in the indirect reuse system, as opposed to the direct reuse system where these barriers are provided. Coprostanol, a faecal sterol, was found to be a useful qualitative indicator of faecal pollution in water. Several indicators for organic macropollution, as well as organic pollution indices as indicators for organic micropollutants, were evaluated.

Effect of oxygen deprivation on treatment processes in a full-scale drinking water biofilter

2015 ◽  
Vol 15 (4) ◽  
pp. 825-833 ◽  
Author(s):  
D. A. Søborg ◽  
I. L. Breda ◽  
L. Ramsay
Keyword(s):  
Drinking Water ◽  
Oxygen Deprivation ◽  
Full Scale ◽  
Water Levels ◽  
Raw Water ◽  
Filter Media ◽  
Deprivation Period ◽  
Treatment Processes ◽  
Effect Of Oxygen ◽  
Iron Manganese

Dissolved oxygen is critical for proper operation of waterworks that utilize anaerobic groundwater and rely on biofilters to remove iron, manganese and ammonium. In these biofilters, planned or inadvertent oxygen deprivation may occur for a variety of reasons. The water quality effects of oxygen deprivation on the function of drinking water biofilters, however, have not previously been reported. In this study, a 5-day oxygen deprivation period in full-scale biofilters was found to affect iron, manganese and ammonium concentrations differently. During the oxygen deprivation period, iron continued to be removed, although a greater depth of filter media was required to carry out the removal. Manganese oxide in filter media was mobilized, causing manganese water concentrations to increase well above raw water levels. The ammonium in the raw water passed through the biofilters unchanged, indicating the dependence of nitrification microorganisms on oxygen as their sole electron acceptor. Stringent national drinking water criteria were exceeded during the deprivation period but were once again met within hours after oxygenation was recommenced. Manganese and nitrite recovery to pre-deprivation concentrations, however, required days. The results illustrate the interdependence of treatment parameters and provide valuable practical information to waterworks that experience or plan oxygen stoppage.

Relationship between F-specific RNA phage genogroups, faecal pollution indicators and human adenoviruses in river water

2009 ◽  
Vol 43 (5) ◽  
pp. 1257-1264 ◽  
Author(s):  
Leslie Ogorzaly ◽  
Adeline Tissier ◽  
Isabelle Bertrand ◽  
Armand Maul ◽  
Christophe Gantzer
Keyword(s):  
River Water ◽  
Pollution Indicators ◽  
Faecal Pollution ◽  
Human Adenoviruses ◽  
Rna Phage
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