Turbidity Meters (Water Monitoring) Articles

Evaluation of Ceraflow-70 as a Filtration Media for High Rate Surface Water Filtration - Case Study

Project Description The existing water filtration facility in Clinton MA is a high rate, direct filtration process that has been on-line since 2006. The water filtration plant draws it raw water from the Wachusett Reservoir. Chemical feed systems are provided for chemically assisted filtration, pre-oxidation (potassium permanganate), coagulation, pH and alkalinity adjustment (sodium bicarbonate ...

Jul. 12, 2019

By Wateropolis Corp.

Clean Marine Case Study

EGC unit complete with 2 fans and 5 exhaust gas connec-tions, pumps with variable frequency drive, filters, cooler, NaOH dosage system, gas (SO2/CO2) and water (PAH , turbidity, pH, flow) analyzers, temperature and pressure monitoring, valves, flow meters, exhaust dampers (bypass), switchboard, PLC, Documentation and Certification, Services during planning, installation and ...

May 1, 2019

By Vortex Ecological Technologies Ltd.

Turbidimeter calibration tank

The forth generation SediMeter™ includes turbidimeters, and many customers have quality procedures that call for a way to regularly check the readings using a known standard such as Formazin. Given that the SediMeter is immersed in the liquid it measures, it needs a much larger volume than a turbidimeter that measures on a sample in a vial, for instance. Unfortunately, the liquid is ...

Jul. 4, 2018

By Lindorm, Inc.

Water Quality Data Logger for Monitoring Coal Mine Runoff

Water Quality Monitoring Solutions from dataTaker CAS DataLoggers provided an intelligent water quality data logging solution for an open-cut coal mine to monitor high salinity water runoff into local retaining ponds with a Water Quality Data Logger. The water from these retention ponds could only be released into the local river system when it was of sufficient quality to have no effect on the ...

May 25, 2018

By CAS DataLoggers

Fourth generation SediMeter

The SediMeter™ SM4 has the same sensor as SM3 for beload transport, erosion and sediment accumulation; plus nephelometric turbidimeters for suspended sediment transport; plus an accelerometer for detecting energy levels and for conditions based monitoring (CBM); plus UV anti-fouling; plus a fluorescence meter; plus a light meter for good measure. SM4 has the same SediMeter™ sensor as ...

Jan. 10, 2018

By Lindorm, Inc.

Fouling problem solved

The main role of the SediMeter sensor is to measure the bottom level, in order to quantify erosion and sediment accumulation. The SediMeter sensor consists of optical backscatter detectors mounted inside a tube. They emit light through the tube and measure the reflected light. Obviously, the tube has to be reasonably clear for this to function. When the instrument was invented this was not an ...

Nov. 16, 2017

By Lindorm, Inc.

What is turbidity?

Turbidity measures the relative clarity of a water sample. It is determined by the amount of scattering that occurs when a light source is shined through a water sample. Light scattering is caused by increased concentrations of suspended particles in water that are not individually visible to the naked eye, which can give the water a cloudy appearance. This parameter is used as a general ...

Oct. 17, 2017

By MANTECH Inc.

Meet the Partech Distributor – Stig Wahlström

This month we spoke to Hannu Toroi at our distributor Stig Wahlström in Finland to ask his opinion on Partech, take a look at what he had to say… How long have you been affiliated with Partech? We first became involved with Partech in 2012. We were drawn to Partech water instruments because they complement other wastewater devices used in treatment plants. What are the best things ...

Dec. 10, 2015

By Partech (Electronics) Ltd.

Influence of local calibration on the quality of online wet weather discharge monitoring: feedback from five international case studies

This paper reports about experiences gathered from five online monitoring campaigns in the sewer systems of Berlin (Germany), Graz (Austria), Lyon (France) and Bogota (Colombia) using ultraviolet–visible (UV–VIS) spectrometers and turbidimeters. Online probes are useful for the measurement of highly dynamic processes, e.g. combined sewer overflows (CSO), storm events, and river ...

Jan. 21, 2015

By IWA Publishing

Accuracy of different sensors for the estimation of pollutant concentrations (total suspended solids, total and dissolved chemical oxygen demand) in wastewater and stormwater

Many field investigations have used continuous sensors (turbidimeters and/or ultraviolet (UV)-visible spectrophotometers) to estimate with a short time step pollutant concentrations in sewer systems. Few, if any, publications compare the performance of various sensors for the same set of samples. Different surrogate sensors (turbidity sensors, UV-visible spectrophotometer, pH meter, ...

Jul. 19, 2013

By IWA Publishing

Qdos metering pumps solve turbidity testing dilemma for Welsh Water

Until recently, turbidity testing at the Pontsticill Water Treatment Works in the Brecon Beacons National Park relied on the use of bellows pump technology. However, the inherent introduction of air in the samples was undesirable and led to false readings. Now though, relief has arrived in the shape Watson-Marlow’s new Qdos 30 metering pumps, which not only provide excellent suction ...

Jan. 17, 2013

By Watson-Marlow Fluid Technology Group

Turbidity tubes for drinking water quality assessments

Turbidity tubes have been considered to be the field method of choice for drinking water quality monitoring in resource-limited contexts because of their relative simplicity and low cost in comparison with conventional (nephelometric) turbidimeters. These tubes utilise the principle of visual extinction of a submerged target for turbidity determination and were therefore thought to be subject to ...

Dec. 1, 2011

By IWA Publishing

Turbidity - A Meaningful Parameter For Drinking Water

This article was featured in International Labmate - July 2008 Turbidity measurement represents a method appearing quite simple with a very complex background. Its complexity is shown by the fact that possibilities for objective and reproducible measurements were developed just about in the 2nd half of the 20th century. Turbidity is caused by dispersion of undissolved particles varying in size ...

Aug. 1, 2008

By WTW - a xylem brand

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