نتایج جستجو برای: water turbidity

تعداد نتایج: 553927  

ژورنال: سلامت و محیط زیست 2021

Background and Objective: Access to safe water is critical for protecting human health. Turbidity is one of the main physical parameters that affect the quality of water from both health and aesthetical points of view. Therefore, waters should be treated based on the standards set for turbidity before consumption. This study was performed to determine the performance of a bench-scale baffled fi...

2016
Juliette Cortez Karen Duarte Maria Miller Erik Nichols

In this analysis, different tools were utilized in measuring the different parameters, which were DO, temperature, pH, and turbidity. For the measurement of each parameter (with exception of turbidity) we dipped the parameter-stick about half-way into the water while swirling it slowly. We continued doing so until the monitor displayed a stable measurement for us to record. Turbidity was slight...

Journal: :Environmental monitoring and assessment 2010
Christian F Lenhart Kenneth N Brooks Daniel Heneley Joseph A Magner

The Minnesota River Basin (MRB), situated in the prairie pothole region of the Upper Midwest, contributes excessive sediment and nutrient loads to the Upper Mississippi River. Over 330 stream channels in the MRB are listed as impaired by the Minnesota Pollution Control Agency, with turbidity levels exceeding water quality standards in much of the basin. Addressing turbidity impairment requires ...

ژورنال: Medical Laboratory Journal 2015
Dabirzadeh, M, , Davoodi, T, , Hashemi, M, , Pashaie Naghadeh, A, ,

Abstract Background and objective: Bioindicators of drinking water are always influenced by physical and chemical factors such as turbidity and chlorine.  Considering the assessment of drinking water quality is based on residual chlorine, E.coli, heterotrophic bacteria and turbidity.  We aimed to evaluate the effect of pH, chlorine residual and turbidity on the microbial ...

Journal: :Journal of water and health 2012
Pascal Beaudeau Alain Le Tertre Abdelkrim Zeghnoun Antonella Zanobetti Joel Schwartz

The 80,000 inhabitants of the lower part of Le Havre obtain their water supply from two karstic springs, Radicatel and Saint-Laurent. Until 2000, the Radicatel water was settled when turbidity exceeded 3 NTU, then filtered and chlorinated, whereas the Saint-Laurent water was simply chlorinated. Our study aimed to characterize the link between water turbidity and the incidence of acute gastroent...

2001
Y. K. Jung M. Y. Han

The removal of cadmium and turbidity from contaminated soil-washing water was studied by Electroflotation (EF) at the laboratory scale by using sodium lauryl sulfate (SLS) as an anionic surfactant, and calcium hydroxide (Ca(OH)2) as a coagulant. The stoichiometric cadmium to collector (SLS) and coagulant (Ca(OH)2) ratio was 1:4.5. Significant removal of cadmium (100 %, not detected in the resid...

2012
G Badalians Gholikandi E Dehghanifard M Noori Sepehr A Torabian S Moalej A Dehnavi AR Yari AR Asgari

BACKGROUND Water filtration units have been faced problems in water turbidity removal related to their media, which is determined by qualitative indices. Moreover, Current qualitative indices such as turbidity and escaping particle number could not precisely determine the efficiency of the media in water filtration, so defining new indices is essential. In this study, the efficiency of Anthraci...

2015
Javier Manjarrez Eric Rivas-González Crystian S. Venegas-Barrera Alejandro Moyaho Dennis M. Higgs

Semi-aquatic snakes integrate visual and chemical stimuli, and prey detection and capture success are therefore linked to the display of visual predatory behavior. The snake Thamnophis melanogaster responds preferentially to individuals of the fish Xenotoca variata with a greater number of bright, colorful spots (lateral speckles) compared with those with a smaller number; however, water turbid...

Background: Turbidity removal using inorganic coagulants such as iron and aluminum salts in water treatment processes causes environmental and human health concern. Historically, the use of natural coagulant to purify turbid water has been practiced for a long time. Recent research indicates that Descurainia Sophia seed can be effectively used as a natural coagulant to remove water turbidity. ...

ژورنال: Medical Laboratory Journal 2015
Ghazanfari, Z, , Karvar, M, , Pouryazdanpanah, N, ,

Abstract Background and objective: Bioindicators of drinking water are always influenced by physical and chemical factors such as turbidity and chlorine.  Considering the assessment of drinking water quality is based on residual chlorine, E.coli, heterotrophic bacteria and turbidity.  We aimed to evaluate the effect of pH, chlorine residual and turbidity on the microbial ...

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