turbidity analysis Articles

  • 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 ...


    By MANTECH Inc.

  • Research on PWM applied in water turbidity measurement

    In this paper, three common measuring methods for the principles of water turbidity, namely, scattering, transmission and the ratio method are introduced. A method combined with modulation and demodulation techniques based on pulse width modulation (PWM) pulse for turbidity measurement using light intensity modulation is proposed. The experimental system that is, the realizing circuit of ...


    By IWA Publishing

  • Flocculation performance of magnetic particles with high-turbidity surface water

    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. The performance of nFeO in removing ...


    By IWA Publishing

  • New MANTECH Turbidity Flow Cell and Method - Case Study

    Man-Tech’s Turbidity Flow Cell and Method only requires calibrations every 1-3 months. Man-Tech’s automated turbidity has many benefits that make it work well: the sample is mixed to ensure homogeneity, excellent and stable calibrations, easy to add additional parameters including pH, conductivity, alkalinity, colour, and flouride, among other reasons. Why does ...


    By MANTECH Inc.

  • Granular activated carbon for removal of organic matter and turbidity from secondary wastewater

    A range of commercial granular activated carbon (GAC) media have been assessed as pretreatment technologies for a downstream microfiltration (MF) process. Media were assessed on the basis of reduction in both organic matter and turbidity, since these are known to cause fouling in MF membranes. Isotherm adsorption analysis through jar testing with supplementary column trials revealed a wide ...


    By IWA Publishing

  • Dynamic soft sensors for detecting factors affecting turbidity in drinking water

    Effective monitoring of water quality is critical for water safety. In particular, online monitoring based on modeling is useful in several applications such as process assessment, hazardous event detection or common fault diagnostics in the water processes. Soft sensors have lately established themselves as a good alternative for different tasks of process control such as the acquisition of ...


    By IWA Publishing

  • Applying reliability analysis to evaluate water treatment plants

    The aim of this study was to demonstrate the applicability of reliability analysis to a water treatment plant (WTP). Data from daily monitoring of raw and finished water quality from a direct filtration WTP covered the parameters of turbidity, apparent colour, pH, aluminum, chlorine and fluoride, from December 2007 to August 2011. Data analysis included descriptive statistics and adherence tests ...


    By IWA Publishing

  • Comparative analysis of two low cost point-of-use water treatment systems

    The study examined two low-cost point-of-use water treatment systems developed in respect of bacterial and particulate removal when exposed to surface water for three months. Bacterial removal efficiency was estimated using E. coli and fecal coliforms, while particulate reduction efficiency was estimated by determining turbidity and total suspended solids (TSS). The systems investigated were ...


    By IWA Publishing

  • Detection and phylogenetic analysis of hepatitis A virus and norovirus in marine recreational waters of Mexico

    An investigation was conducted to determine hepatitis A virus (HAV) and norovirus (NV) presence in marine recreational waters (MRWs) from two Mexican tourists beaches (Altata and Mazatlan), located at the northwestern state of Sinaloa, Mexico. Also, Binary Logistic Regression (BLR) analyses were conducted between physicochemical parameters (temperature, turbidity and salinity) and viral organisms ...


    By IWA Publishing

  • Early warning of changing drinking water quality by trend analysis

    Monitoring and control of water treatment plants play an essential role in ensuring high quality drinking water and avoiding health-related problems or economic losses. The most common quality variables, which can be used also for assessing the efficiency of the water treatment process, are turbidity and residual levels of coagulation and disinfection chemicals. In the present study, the trend ...


    By IWA Publishing

  • Comparative analysis on the effectiveness of various filtration methods on the potability of water

    This paper comparatively assessed the effectiveness of potable water filtration methods, commonly used in the hinterlands in some Ghanaian communities. Physico-chemical and microbiological analysis were carried out on pond, dam and river water samples, using spectrophotometric, pour plate count and the most probable number (MPN) methods. For the unfiltered water samples the total dissolved ...


    By IWA Publishing

  • A novel image processing-based system for turbidity measurement in domestic and industrial wastewater

    Wastewater treatment facilities are continually challenged to meet both environmental regulations and reduce running costs (particularly energy and staffing costs). Improving the efficiency of operational monitoring at wastewater treatment plants (WWTPs) requires the development and implementation of appropriate performance metrics; particularly those that are easily measured, strongly ...


    By IWA Publishing

  • Total photosynthetic pigments in addition to turbidity during the selection of coagulant treatments: a drinking water treatment perspective

    Total photosynthetic pigments (TPP) or chlorophyll-a analysis can be useful in selecting coagulant treatments that will improve phytoplankton removal and reduce treatment costs. The objectives of this study were to compare the efficacy of phytoplankton and turbidity removal when using TPP and turbidity as indicator parameters of appropriate coagulant treatments as well as to evaluate the ...


    By IWA Publishing

  • Comparative analysis of the outflow water quality of two sustainable linear drainage systems

    Three different drainage systems were built in a roadside car park located on the outskirts of Oviedo (Spain): two sustainable urban drainage systems (SUDS), a swale and a filter drain; and one conventional drainage system, a concrete ditch, which is representative of the most frequently used roadside drainage system in Spain. The concentrations of pollutants were analyzed in the outflow of all ...


    By IWA Publishing

  • Dielectric barrier discharge-based investigation and analysis of wastewater treatment and pollutant removal

    Current research reveals that the oxidation by ozone is considered as an effective solution and offers irrefutable advantages in wastewater treatment. It is also well known that ozone is used to treat different types of water due to its effectiveness in water purification and for its oxidation potential. This process of ozonation is becoming progressively an alternative technology and is ...


    By IWA Publishing

  • Quantitative analysis of microbial contamination in private drinking water supply systems

    Over one million households rely on private water supplies (e.g. well, spring, cistern) in the Commonwealth of Virginia, USA. The present study tested 538 private wells and springs in 20 Virginia counties for total coliforms (TCs) and Escherichia coli along with a suite of chemical contaminants. A logistic regression analysis was used to investigate potential correlations between TC ...


    By IWA Publishing

  • Evaluation of Sampling and Field-Filtration Methods for the Analysis of Trace Metals in Ground Water

    Selected ground water sampling and field-filtration methods were evaluated to determine their effects on field parameters and trace metal concentrations in samples collected under several types of field conditions. The study focused on conditions where traditional approaches may produce turbid samples, which often leads to filtration of suspended particles from the sample before laboratory ...

  • Chemical analysis of drinking water from some communities in the Brong Ahafo region

    This study consisted of the determination of the trace metals and some physiochemical properties in drinking water samples from the Brong Ahafo region of the Republic of Ghana, where drinking water samples are not treated before it is consumed. The purpose was to ascertain the quality of water from these sources. Samples were taken from fifteen sampling points and analyzed for the following ...

  • Prediction of coagulation and flocculation processes using ANN models and fuzzy regression

    Coagulation and flocculation are two main processes used to integrate colloidal particles into larger particles and are two main stages of primary water treatment. Coagulation and flocculation processes are only needed when colloidal particles are a significant part of the total suspended solid fraction. Our objective was to predict turbidity of water after the coagulation and flocculation ...


    By IWA Publishing

  • TitraSip automated pipetting: justification over manual pipetting and analysis in beakers case study

    MANTECH INC. is a leading manufacturer of automated multi-parameter, titration, BOD and COD laboratory instruments. MANTECH developed the first automated titrator to include automated pipetting. The software controlled TitraSip module has proven to generate results that are accurate, precise and enforceable. Water quality is of paramount importance to ecosystems and human health and the TitraSip ...


    By MANTECH Inc.

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