Turbidity Monitoring Articles

122 Results found
  • Category: Monitoring & Testing ×

  • Subcategory: Turbidity Monitoring ×

Strategies of coagulant optimisation to improve the removal of turbidity and Ceratium hirundinella cells during conventional drinking water purification

by IWA Publishing  (Oct. 16, 2014)

The dinoflagellate, Ceratium hirundinella (C. hirundinella) cells are known to cause many problems when source water due for purification contains relatively high concentrations. The objective of this study was to investigate strategies for the effective and simultaneous removal of turbidity and C. hirundinella cells using turbidity and total ...

Flocculation performance of magnetic particles with high-turbidity surface water

by IWA Publishing  (Aug. 6, 2014)

The sharp increase in raw-water turbidity following heavy rain presents considerable treatment problems due to low sedimentation rates. The objective of this study was to evaluate the removal of negatively charged suspended solids (SS) in surface water treatment using magnetic particles (nFeO; FeO · Fe2O3) synthesised in our laboratory. ...

Treatment of suspended solids and heavy metals from urban stormwater runoff by a tree box filter

by IWA Publishing  (Jun. 25, 2014)

Particulates, inorganic and toxic constituents are the most common pollutants associated with urban stormwater runoff. Heavy metals such as chromium, nickel, copper, zinc, cadmium and lead are found to be in high concentration on paved roads or parking lots due to vehicle emissions. In order to control the rapid increase of pollutant loads in ...

Virus removal efficiency of ceramic water filters: effects of bentonite turbidity

by IWA Publishing  (Apr. 14, 2014)

Ceramic water filters (CWFs) are utilized in many developing countries as point-of-use (POU) water treatment devices, to reduce waterborne pathogens in potable water. Virus removal efficiencies of several CWFs are investigated under various influent conditions using MS2 (ATCC: 15597-B1) as a surrogate phage for human enteric viruses. The addition ...

Total Dissolved Solids (TDS) Measurement

by IC Controls  (Feb. 11, 2014)

Definition Total Dissolved Solids (TDS) is a measure of the sum of all inorganic and organic substances in a liquid in molecular, ionized or micro-granular colloidal suspended form. The solids must be small enough to survive filtration through a sieve the size of two micrometer.  TDS solids are normally found in all freshwater systems. Major ...

Effect of Suspended Uncontaminated Sediment on POP Release

by John Wiley & Sons, Ltd.  (Oct. 15, 2013)

The transport and fate of persistent organic pollutants (POPs) during resuspension events were investigated using a batch mixing technique. This technique allowed for the determination of sorption and desorption kinetics under more realistic mixing conditions than those used in previous investigations. It was demonstrated that sorption follows ...

Fecal coliform removal in a lightly loaded surface-flow constructed treatment wetland polishing agricultural runoff

by IWA Publishing  (Aug. 29, 2013)

Constructed treatment wetlands can be an effective and sustainable method to remove pathogens that pose health risks from agricultural runoff. This study evaluated the removal of fecal coliform (FC) from agricultural runoff in a lightly loaded surface-flow treatment wetland prior to discharge to the Yakima River, Washington State, USA. The 1.6 ha ...

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

by IWA Publishing  (Jul. 19, 2013)

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, ...

Multi-Barrier water treatment cleans up turbidity spikes

by WesTech Engineering, Inc.  (May 22, 2013)

When the city of Bloomfield, N.M., was notified by the New Mexico Environmental Department that it had 18 months to bring its drinking water treatment plant into compliance with the Interim Enhanced Surface Water Treatment Rule (IESWTR), the city needed a fast, innovative solution. Under the IESWTR, the city was challenged to meet regulatory ...

Final effluent monitors protect wastewater treatment efficiency

by HACH LANGE GmbH - a Hach Company  (May 16, 2013)

Southern Water operates 370 wastewater treatment plants (WWTP), many of which are unmanned for most of the time and most have numeric environmental permits, so a network of online monitors has been established to improve treatment and protect discharge compliance. This has involved the installation of final effluent monitors at over 300 sites in a ...

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