low turbidity measurement Articles

  • Turbidity Measurements in Drinking Water, Effluent Discharges and Coagulant Controlling

    This month at Partech Water Instruments we’re talking about our turbidity sensors—fantastic to use as an environmental indicator. So how can they be used? We’re here to tell you about turbidity sensors being utilised for drinking water, effluent discharges and coagulant controlling. Turbidity Sensors and Drinking Water Turbidity sensors ...


    By Partech (Electronics) Ltd.

  • 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 ...


    By IWA Publishing

  • Exclusive: Introducing the new TurbiTechw2 D-ISO turbidity sensor

    We have some exciting news and you are the very first to read about it! This 2nd – 3rd November at the WWEM Show in Telford we will be launching the latest sensor in ...


    By Partech (Electronics) Ltd.

  • Groundwater: Low-flow Purging and Sampling

    Significant timesavings, improved sample process integrity, quality assurance and minimal quantities of potentially contaminated purge water to manage - are attractive as the focus on groundwater quality sharpens and economics demand best cost-benefit based methods Water has become a vitally important resource.  Maintaining its quality and quantity and avoiding pollution are set to be ...


    By Geotech

  • Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures

    Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water ...


    By Solinst Canada Ltd.

  • Rt-Ribosyn – A New Method to Measure the Specific Growth Rates of Distinct Microbial Populations in Engineered Systems

    ABSTRACTA molecular biology based method called RT-RiboSyn has been developed to measure the specific growth rate of microbial populations. This method analyzes culture samples that have been exposed to chloramphenicol for defined times. Chloramphenicol disrupts ribosome synthesis, which causes a buildup of the level of precursor 16S rRNA within the cells. Specific microbial populations can be ...

  • Use of chitosan in coagulation flocculation of raw water of Keddara and Beni Amrane dams

    The effectiveness of chitosan as a coagulant flocculant in surface water treatment has been studied. Tests were carried out in laboratory on treated and raw water. The treated water was mixed with high and low concentrations of bentonite to simulate turbid water. This treated water provides from water treatment plant of Algiers (Boudouaou site) which is supplied by both dams of Keddara and Beni ...


    By IWA Publishing

  • Meteorological pre-processing of incoming solar radiation and heat flux over a sparse boreal forest at a northern site during winter conditions

    Measurements from Northern Finland on radiation and turbulent fluxes over a sparse boreal forest with snow-covered ground were analysed. The measurements represent harsh winter conditions characterised by low sun angles. The absorption of incoming solar radiation in clear skies (turbidity) was found to be a strong function of the solar elevation. At low solar elevation angles, commonly used ...


    By Inderscience Publishers

  • Filter backwashing: When and how

    Backwashing filters is a necessary and important part of the filtration process. Many operating problems associated with the filtration process can be traced to delayed or inadequate backwashing. Producing a high-quality and low turbidity filtered water depends on having clean media free of cracks and mudballs. The Interim Enhanced Surface Water Treatment Rule, promulgated on Dec.16, 1998, lowers ...


    By Entech Design, Inc.

  • Seatac airport third runaway

    Active Treatment with 1% ChitoVan™ Chitosan Acetate The west side of Sea-Tac airport was widened by adding 11 million cubic yards of fill dirt to create the 3rd runway. Because the west side of the airport drains to Miller Creek, a protected NW stream, all of the construction stormwater had to be captured and treated prior to discharge. During the project over 5 billion gallons of ...


    By Dungeness Environmental

  • Heavy Metals Analysis

    Correct measurement results are a prerequisite for compliance with limit values, which are always specified as total metals. Heavy metals such as copper, nickel, zinc, etc. can be quickly and reliably determined in aqueous samples with the help of the LANGE cuvette tests. Matrix factors (e.g. interference ions, colour, turbidities, etc.) may have a negative impact on themeasurement and cause ...


  • Final effluent monitors protect wastewater treatment efficiency

    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 programme that has lasted for more than ten ...


  • Occurrence and predictive correlations of Escherichia coli and Enterococci at Sandpoint beach (Lake St Clair), Windsor, Ontario and Holiday beach (Lake Erie), Amherstburg, Ontario

    Point and nonpoint sources contribute to fecal contamination of surface waters by human pathogens that exist at low concentrations and are difficult, expensive, and/or impossible to easily detect. Therefore, fecal indicator bacteria (FIB) are used as surrogates in identification of fecal contamination, including Escherichia coli (EC) and Enterococcus spp. (ENT), at recreational beaches to protect ...


    By IWA Publishing

  • Occurrence of Aeromonas spp. in a random sample of drinking water distribution systems in the USA

    Aeromonads are aquatic bacteria found in drinking water supplies worldwide. Some species, such as Aeromonas hydrophila, can cause disease in humans. For this survey, 293 United States public water systems were selected using random sampling, stratified by water source and system type. Water samples were collected during one year from three sites (six samples per site) in each system. Temperature, ...


    By IWA Publishing

  • Chlorine mystery solved

    Following the installation of in-pipe drinking water quality monitoring sondes, distribution engineers discovered an occasional significant disparity between the Intellisondes’ data and results from grab samples tested by a photometer tablet (DPD) method. For most of the time, there was close agreement between the two methods, but periodically, the photometer results varied wildly, whilst ...


    By Intellitect Water Ltd

  • In-situ quality monitoring station in Lower Saxony

    Background 'Duemmer' is a shallow lake in the south-west of Lower Saxony; through the lake flows the river 'Hunte'. The catchment area spans 426 km2. With a surface of 12.4 km2 and an average depth of 1.1 m there is a water volume of approx. 14 million m3. Large parts of the lakeside are a nature reserve and the lake is a popular local recreation area. The lake suffers from strong nutrient ...


    By The OTT Hydromet Group

  • A novel technology to improve drinking water quality: a microbiological evaluation of in-home flocculation and chlorination in rural Guatemala

    An estimated 1 billion persons in low-income countries do not have access to improved drinking water. Chlorine, a useful water treatment agent, is less effective in turbid water, and lacks a visible effect, limiting its acceptability. A product incorporating precipitation, coagulation, flocculation, and chlorination technology (combined product) to reduce microbial, organic and heavy metal ...


    By IWA Publishing

  • The Economic Argument for Flushing Optimization, and How ATP Monitoring Can Help

    As a way of controlling fouling in water distribution lines, utilities often conduct system-wide flushing cycles to clear lines of sediment, biofilm, and other accumulated material to maintain good water quality for customers. This can be done on an annual basis or as dictated by water technicians if more frequent flushing is needed. Take the city of Parker, Colorado (Population = 46,363) as an ...

  • Assessment of the impact of water parameters on the flow rate of ceramic pot filters in a long-term experiment

    Poor water quality is a major contributing factor to disease in developing countries. Silver-coated ceramic pot filters (CPFs) are a relatively common form of household water treatment system (HWTS) representing an effective and sustainable technology for poor communities. Water production seems to be the major limiting factor of the CPF's lifetime and sustainability since low flow rates do ...


    By IWA Publishing

  • Hydrocarbon in Water Monitors using Fluorescence

    Hydrocarbon in Water Monitors using Fluorescence are capable of detecting hydrocarbons as low as 5 Parts per Billion and as high as 10,000 Parts per Million depending on the application.  Because only the target hydrocarbons will fluoresce, these monitors have no significant affect due to water turbidity (rust, dirt, gas bubbles, soot, etc.).  Fluorescence monitors provide a measurement ...

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