real-time water quality Articles

MLP, ANFIS, and GRNN based real-time coagulant dosage determination and accuracy comparison using full-scale data of a water treatment plant

Real-time determination of appropriate coagulant dosage under wide fluctuation of raw water quality in a water treatment plant (WTP) is a challenging task due to nonlinearity relation between coagulant dosage and raw water characteristics. In this research, three techniques, multilayer perceptron (MLP), adaptive neuro fuzzy inference system (ANFIS), and generalized regression neural network ...

Dec. 8, 2016

By IWA Publishing

Probabilistic qualitative analysis for fault detection and identification of an on-line phosphate analyzer. Int. J. Adv. Eng. Sci. Appl. Math.

Abstract: On-line, real-time collection of measurements remains a key challenge in water quality monitoring and control due to unknown and varying quality of on-line sensor data. Today’s data quality assessment is typically based on a comparison of sensor-based measurements and grab samples of the sampled solution taken next to the on-line analyzer and analyzed in a laboratory. In this ...

Jan. 1, 2012

By inCTRL Solutions Inc.

Real-time forecasting of Hong Kong beach water quality by 3D deterministic modelling

Bathing beaches are important marine resources for many coastal cities. To safeguard the health of beach users, beach management authorities in Hong Kong rely on the use of the concentration of the indicator bacteria Escherichia coli (E. coli). Currently, the beach water quality grading system (from “good” to “very poor”) is based on the geometric mean of the most recent ...

Jul. 25, 2014

By IWA Publishing

Real-time control of combined surface water quantity and quality: polder flushing

In open water systems, keeping both water depths and water quality at specified values is critical for maintaining a ‘healthy’ water system. Many systems still require manual operation, at least for water quality management. When applying real-time control, both quantity and quality standards need to be met. In this paper, an artificial polder flushing case is studied. Model Predictive Control ...

Feb. 1, 2010

By IWA Publishing

Interactive monitoring in reservoirs using NUSwan – preliminary field results

Water quality monitoring of large freshwater bodies is usually slow and laborious, resulting in very sparse samples. This paper presents the design and preliminary field results from a network of low-cost mobile robots called NUSwan, a system aimed at addressing this issue. NUSwan robots can autonomously traverse a reservoir to provide real-time water quality data over the Internet, and allow ...

Jan. 1, 2017

By IWA Publishing

Water quality of Danube Delta systems: ecological status and prediction using machine-learning algorithms

Environmental issues have a worldwide impact on water bodies, including the Danube Delta, the largest European wetland. The Water Framework Directive (2000/60/EC) implementation operates toward solving environmental issues from European and national level. As a consequence, the water quality and the biocenosis structure was altered, especially the composition of the macro invertebrate ...

Feb. 19, 2016

By IWA Publishing

Quick, coordinated efforts reduce environmental impact on Lake Pontchartrain

New Orleans--Immediately following Hurricane Katrina’s massive flooding in the City of New Orleans Aug. 29, numerous media focused on the polluted waters, containing what they called a "toxic soup." The mix consisted of water from nearby Lake Pontchartrain, refuse from the overwhelmed sewer system in New Orleans, oil and industrial chemicals, as well as thousands of vehicles, boats and ...

Oct. 27, 2005

By Airmaster Aerator, L.L.C.

Spectroscopic characterization of dissolved organic matter in coking wastewater during bio-treatment: full-scale plant study

This paper taking a full-scale coking wastewater (CWW) treatment plant as a case study aimed to characterize removal behaviors of dissolved organic matter (DOM) by UV spectra and fluorescence excitation-emission matrix-parallel factor analysis (PARAFAC), and investigate the correlations between spectroscopic indices and water quality parameters. Efficient removal rates of chemical oxygen ...

Jul. 8, 2015

By IWA Publishing

The potential of lipopolysaccharide as a real-time biomarker of bacterial contamination in marine bathing water

The use of total lipopolysaccharide (LPS) as a rapid biomarker for bacterial pollution was investigated at a bathing and surfing beach during the UK bathing season. The levels of faecal indicator bacteria Escherichia coli (E. coli), the Gram-positive enterococci, and organisms commonly associated with faecal material, such as total coliforms and Bacteroides, were culturally monitored over four ...

Mar. 19, 2014

By IWA Publishing

Algae control in East Dorset raw water reservoir - Case Study

Bournemouth Water has installed four MPC-Buoy systems to monitor and control algal blooms at Longham Lakes. After the installation of the MPC-Buoy systems a dramatic reduction in the concentration of algae was experienced. The Challenge: Installing an Environmentally Friendly Solution to Control Algal Blooms The objective of the project was to reduce algae concentrations . Algae growth in the ...

Jul. 1, 2016

By LG Sonic

Real-time wastewater monitoring - Europe - Case Study

SENTRY technology was installed at an Organica Food Chain Reactor with combined returned MLSS in Budapest, Hungary. The sensor was installed for a period in the influent and effluent Local sampling was performed by Organica personnel to determine the correlation between the Microbial Electron Transfer (MET) value of the sensor and TBOD5. TCOD. fCOD. The sensor was demonstrated to be a functional ...

Apr. 5, 2019

By Sentry

Water quality management in the food and beverage industry by hybrid automation using the example of breweries

Water of drinking water quality is one of the most important resources in the food and beverage industry, e.g. for breweries. In this ‘Water Quality Management’ project, a new strategy of partial process water stream treatment is presented. Based on our own investigations, a water saving potential of 10–20% of the entire water consumption is possible with regard to ...

Apr. 3, 2013

By IWA Publishing

Real-time modeling of trihalomethane formation in a full-scale distribution system

Using a combination of modeling and online water quality instrumentation, utilities can produce real-time predictions of trihalomethane (THM) formation in their distribution system. In this study, an empirical model was used to predict THM formation and embedded into a full-scale supervisory control and data acquisition (SCADA) system. Online water quality instrumentation provided input values ...

Oct. 30, 2012

By IWA Publishing

Algae control in Auckland Dam - Case Study

Five solar-powered algae control systems where installed in the Lower Nihotupu Dam in Auckland, New Zealand to reduce the levels of blue-green algae. The project started in December 2016 and so far, the project appeared to be of great success with the blue-green algae count over summer 90 per cent less than the previous year. The Challenge: Reduce Blue-green Algae Count The main objective for ...

Jan. 31, 2018

By LG Sonic

Why 2017 is LG Sonic’s best year yet

2017 was another successful year for LG Sonic. The company’s revenue grew for the fifth consecutive year and with new MPC-Buoy installations in Belgium, United Kingdom, Ecuador, Peru and United States, LG Sonic is now running MPC-Buoy algae control projects in more than 17 countries worldwide. Next year will see the introduction of MPC-Lab, this system will combine the most innovative ...

Dec. 20, 2017

By LG Sonic

Algae Controlled in a US Drinking Water Reservoir

A floating solar powered algae control system was installed in Emmitsburg (US) to control algae in a reservoir that provides drinking water to approximately 3,000 people. The MPC-Buoy system, installed in April 2017, succeeds in controlling algae, reducing chemical costs and water usage. The Challenge: Control Algae Problems The main objective of the project was to reduce algae problems, ...

May 1, 2018

By LG Sonic

PolluDet research project - Case Study

The main goal of this project funded by the Italian regional Government is to develop and test prototype analyzers for routine laboratory use and for on-line application to measure algal toxins in fresh and coastal water. An automated method for the quantitative detection of micrcystins in surface water, to be applied in the above mentioned prototype analyzers in under ...

Feb. 22, 2020

By SYSTEA S.p.A.

World Bank Focuses on Vicious Cycle of Water Shortage and Fragility

The World Bank report, which ties fragility to water scarcity, stresses the need for water both for private use and for safe agricultural irrigation. Proposed solutions include technology development and decentralized water treatment This year, the Food and Agriculture Organization of the World Bank published a discussion paper, “Water Management in Fragile Systems,” that ...

Nov. 8, 2018

By Fluence Corporation

Real-Time Bathing Water Quality Monitoring for Total Coliforms Case Study

RS Hydro were contacted to specify and commission a Proteus real-time water quality monitoring system to monitor BOD, COD & Total Coliforms at a marine leisure centre. The client wanted the ability to have real-time or near real-time data from a system so that they could be alerted immediately if it was not safe for people to swim in. The Proteus was provided with BOD, COD, Total Coliforms, ...

Feb. 4, 2020

By Proteus Instruments

On-line monitoring of enzymatic activities in water and water resources

On-site detection of enzymatic activities has been suggested as a rapid surrogate for microbiological pollution monitoring of water resources (e.g. using glucuronidases, galactosidases, esterases). Due to the possible short measuring intervals enzymatic methods have high potential as near-real time water quality monitoring tools. This presentation describes the successful realization and ...

Apr. 1, 2015

By microLAN B.V. - Aqualabo Group