water quality monitor Articles | Environmental XPRT

Water Quality Monitoring and Assessment

The book attempts to covers the main fields of water quality issues presenting case studies in various countries concerning the physicochemical characteristics of surface and groundwaters and possible pollution sources as well as methods and tools for the evaluation of water quality status. This book is divided into two sections: Statistical Analysis of Water Quality Data;Water Quality Monitoring ...

Jul. 25, 2012

By IWA Publishing

Water quality monitoring with hydrolab MS5

Background The Škocjan caves are a unique natural phenomenon located in south western Slovenia and are preserved as the Škocjan Caves Park under UNESCO protection. One of the most famous network of underground caves in the world, they were formed by the flow of the Reka River as it bored tunnels through the region’s limestone geology. The river first disappears underground just outside the ...

May 6, 2010

By OTT HydroMet

Energy cost reduction through online water quality monitoring

Find out how high water hardness affects any sort of process water facility and how we can help you decrease your plant's operational costs. ...

Jan. 1, 2014

By Gebrüder Heyl Analysetechnik GmbH & Co. KG

Access, monitoring and intervention challenges in the provision of safe drinking water in rural Bihar, India

This practical paper addresses the vital gap in water quality monitoring in Bihar. The study addresses an institutional weakness in the area of water quality management in rural Bihar, India. The study focuses on the role of access as a vital component in addressing water quality monitoring and interventions that has a huge impact on protecting community health in areas severely contaminated with ...

Jan. 23, 2013

By IWA Publishing

Water Quality Monitoring for the “Big Four Parameters”

Many different parameters can be measured in natural and artificial waters with sensors or via lab analysis. Each parameter effects water quality and the organisms that depend on the water for survival. Different states, monitoring agencies, and companies also place an emphasis on different water quality parameters to be monitored, depending on local conditions and mandates. For most water ...

Sep. 27, 2010

By Stevens Water Monitoring Systems, Inc.

Rieger and Vanrolleghem: monEAU: A platform for water quality monitoring networks

Abstract: Continuous monitoring of water quality creates huge amounts of data and therefore requires new concepts to guarantee high data quality and to prevent data graveyards. Monitoring stations commonly used in practice today suffer from insufficient flexibility and a lack of standardization. That is, although a lot of monitoring tasks are comparable and should lead to robust and powerful ...

Jan. 1, 2008

By inCTRL Solutions Inc.

Characterizing water quality monitoring visualization with Hadoop and Google Maps

In water quality monitoring, the complexity and abstraction of water environment data make it difficult for staff to monitor the data efficiently and intuitively. Visualization of water quality data is an important part of the monitoring and analysis of water quality. Because water quality data have geographic features, their visualization can be realized using maps, which not only provide ...

Jan. 1, 2017

By IWA Publishing

Water quality monitoring with online change-point detection methods

We develop an approach for water quality time series monitoring and contamination event detection. The approach combines affine projection algorithms and an autoregressive (AR) model to predict water quality time series. Then, we apply online change-point detection methods to the estimated residuals to determine the presence, or not, of contamination events. Particularly, we compare the ...

Jan. 16, 2015

By IWA Publishing

Identifying water quality monitoring stations in a water supply system

Despite good quality assurance and conformance to the standards at the treatment plants, water quality could vary considerably within the distribution network. As water flows through the pipe network, its quality undergoes various transformations due to many factors such as the properties of the finished water, pipe materials, water temperature, water age and low level of disinfectant ...

Dec. 15, 2014

By IWA Publishing

Drinking water quality monitoring using trend analysis

One of the common quality parameters for drinking water is residual aluminium. High doses of residual aluminium in drinking water or water used in the food industry have been proved to be at least a minor health risk or even to increase the risk of more serious health effects, and cause economic losses to the water treatment plant. In this study, the trend index is developed from scaled ...

Jun. 18, 2014

By IWA Publishing

Water Quality Monitoring by Thamnotoxkit FTM including Cyanobacterial Blooms

Abstract: The Thamnotoxkit FTM was evaluated for detecting cyanobacterial toxins as they may be hazardous to human health if they reach drinking water networks or if people are exposed through recreational activity. This test kit is a 24-hour biosassay using larvae of the freshwater anostracan crustaceanThamnocephalus platyurus hatched from cysts. Nine freeze-driedMicrocystis aeruginosa samples ...

Jan. 1, 2000

By Microbiotests Inc.

Application of ion-sensitive sensors in water quality monitoring

Abstract: Within the last years a trend towards in-situ monitoring can be observed, i.e. most new sensors for water quality monitoring are designed for direct installation in the medium, compact in size and use measurement principles which minimise maintenance demand. Ion-sensitive sensors (Ion-Sensitive- Electrode – ISE) are based on a well known measurement principle and recently some ...

Jan. 1, 2004

By inCTRL Solutions Inc.

Water quality monitoring following Hurricanes Katrina and Rita

Following the passage of Hurricane Katrina, New Orleans was left with 80% of its land area flooded. In some locations, the flood waters were over 30 feet deep. In the heat and stagnation, the waters quickly became heavily polluted. Pump out operations began in early September 2005 to get the city dried out quickly. Lake Pontchartrain was the primary receiving water body. A variety of approaches ...

Feb. 28, 2008

By Inderscience Publishers

Optimal sampling network for monitoring the representative water quality of an entire reservoir on the basis of information theory

This study presents a method for optimal selection of sampling stations for representative and effective water quality monitoring of a reservoir on the basis of information theory. We adopt an objective function used for the design of other hydrological monitoring networks such as rain gauge networks. Unlike rain gauges, in which only a single variable of rainfall is of interest, water quality ...

Jun. 5, 2014

By IWA Publishing

Stakeholder engagement in multi-objective optimization of water quality monitoring network, case study: Karkheh Dam reservoir

Reservoir water quality is important for water quality management downstream. A hierarchical approach is developed to present the monitoring locations within a format that satisfies the objectives of social stakeholders for making final decisions. First, a CE-QUAL-W2 model is applied to simulate water quality variables in the reservoir for a long time using a set of historic data. Second, ...

Dec. 8, 2016

By IWA Publishing

Remote water quality monitoring in South Africa - Case study

Situated in the Mpumalanga province of South Africa, the Xstrata Coal South Africa (XCSA) runs several open cut and underground mining operations producing thermal coal. To ensure their mining operations do not affect the surrounding natural water bodies, the company employs Hydrolab and OTT water quality monitoring equipment with remote data transmission options: the OTT ecoLog 800 water level ...

Jan. 18, 2017

By OTT HydroMet

Topological clustering as a tool for planning water quality monitoring in water distribution networks

Topological clustering was explored as a tool for water supply utilities in preparation of monitoring and contamination contingency plans. A complex water distribution network model of Copenhagen, Denmark, was simplified by topological clustering into recognizable water movement patterns to: (1) identify steady clusters for a part of the network where an actual contamination has occurred; (2) ...

May 5, 2015

By IWA Publishing

Spatial analysis of water quality using a combination of GIS and statistical software

GIS-based spatial analysis was combined with statistical analysis to process time varying water quality data. A data model was employed to manage the spatio-temporal data. The spatial data engine of ArcSDE was used to access the database. A data relationship model was developed to perform data communication between GIS and the statistical software. Visual Basic was used to construct links between ...

Nov. 7, 2006

By Inderscience Publishers

Challenges of accounting for non-point sources in a TMDL evaluation

Recent implementation of nutrient total maximum daily loads (TMDLs) for several East Coast water bodies has left many local governments ‘ahead of the curve,’ being forced to develop compliance strategies with limited TMDL knowledge, and with guidance issued from State and Federal environmental agencies still in the early stages. Accounting for nutrient contributions from non-point sources is the ...

Oct. 13, 2007

By Water Environment Federation (WEF)

Water quality monitoring in wetland ecosystems using microbial model communities

This study reviews the concept of model communities for water quality assessment in aquatic ecosystems. The feeding habits of protozoans were used to unite species into functional, trophic groups. Colonising communities were dominated by bacterivorous Flagellate Species (Sf). A new Index of Periphyton Flagellates (IPF) as an indicator of the trophic status of a water-body was developed. ...

Sep. 28, 2007

By Inderscience Publishers