نتایج جستجو برای: high turbidity

تعداد نتایج: 2063698  

ژورنال: علوم آب و خاک 2018

The goal of this study was to evaluate tannic acid as a coagulant in turbidity removal. Tests were designed using Taguchi method and carried out on the synthetic and natural turbid samples. In order to optimize turbidity removal by tannic acid, seven factors including pH, coagulant dosage, rapid mixing rate, slow mixing rate, slow mixing time, sedimentation time and initial turbidity were inves...

Journal: : 2023

Drinking water for residents who live in flood area is the concern of government and environmental management. Using natural coagulants to transform into potable order reduce number chemical (aluminum salt) that have a negative impact on human health. The results flocculation procedure using agricultural residue extracts, dragon fruit branches (DFBE) avocado seeds (ASE), did not meet Vietnamese...

2004
JACO H. BAAS WESSEL VAN KESTEREN

Flume experiments were performed to study the flow properties and depositional characteristics of high-density turbidity currents that were depletive and quasi-steady to waning for periods of several tens of seconds. Such currents may serve as an analogue for rapidly expanding flows at the mouth of submarine channels. The turbidity currents carried up to 35 vol.% of fine-grained natural sand, v...

Journal: :Indian journal of medical microbiology 2007
C Vaishnavi S Kumar

(w ww .m ed kn ow .co m) . The results are shown in the Table. The exponential character of turbidity increase was less sensitive yet a more speciÞ c screening criterion, thus it is suitable for preliminary conÞ rmation of signiÞ cant bacteriuria. The non-speciÞ ed turbidity increase estimation2 has a high negative predictive value and is suitable (just like the biochemical screening)1,3 for pr...

2015
Jennifer L. Hsieh Trang Quyen Nguyen Thomas Matte Kazuhiko Ito

BACKGROUND Studies have examined whether there is a relationship between drinking water turbidity and gastrointestinal (GI) illness indicators, and results have varied possibly due to differences in methods and study settings. OBJECTIVES As part of a water security improvement project we conducted a retrospective analysis of the relationship between drinking water turbidity and GI illness in ...

1996
Jack Lewis

For estimating suspended sediment concentration (SSC) in rivers, turbidity is generally a much better predictor than water discharge. Although it is now possible to collect continuous turbidity data even at remote sites, sediment sampling and load estimation are still conventionally based on discharge. With frequent calibration the relation of turbidity to SSC could be used to estimate suspende...

Journal: :Medical mycology journal 2013
Hiromitsu Noguchi Keishi Miyata Takashi Sugita Midori Hiruma Masataro Hiruma

We investigated the efficacy of 1064nm Nd:YAG laser for the treatment of onychomycosis caused by dermatophytes. The study population consisted of 12 patients (6 male, 6 female ; average age 53.5 years), with onychomycosis confirmed by fungal culture and/or real-time PCR identification of the pathogen. The causative agent was identified as Trichophyton rubrum in 11 cases and a mixture of T. rubr...

2010
JACK LEWIS

Automated data collection is essential to effectively measure suspended sediment loads in storm events, particularly in small basins. Continuous turbidity measurements can be used, along with discharge, in an automated system that makes real-time sampling decisions to facilitate sedi­ ment load estimation. The Turbidity Threshold Sampling method distributes sample collection over the range of r...

Natural coagulants have received much attention for turbidity removal, thanks to their environmental friendliness. The present study investigates potential application of rice starch for removal of turbidity from aqueous solutions. It considers the effects of four main factors, namely settling time (40-140 min), pH (2-8), slow stirring speed (20-60 rpm), and rice starch dosage (0-200 mg/L), eac...

Background and purpose: Nowadays, rapid growth of car wash industries has led to a demand for wastewater reclamation. In this study, the hybrid process including electrocoagulation/flotation, sedimentation, and filtration were used in treatment of real carwash wastewater. Materials and methods: In this research, the sample was first entered into the ECF reactor, then entered the retention tank...

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