Turbidity Monitoring Articles

346 Results found
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  • Subcategory: Turbidity Monitoring ×

Method for Computing alkalinity based on Total Inorganic Carbon (TIC) and related data case study

by TOC Systems, Inc.  (Mar. 2, 2015)

Summary Standard Methods (Ref. 1) has a procedure using nomographs for estimating COt concentrations (Method 4500-CO2 B) based on total alkalinity titrations. The method presented here reverses that process by computing alkalinity based on TIC measurements using infrared technology. These two methods are demonstrated to be compatible, which is not ...

Effect of sampling duration on the performance evaluation of a stormwater wetland

by IWA Publishing  (Feb. 26, 2015)

In this study, the effect of sampling duration on the performance estimate for a stormwater wetland over both rainy and dry days was evaluated for the appropriate design of sampling duration. As the cumulative percentage volume (Vp), the ratio of cumulative stormwater volume concerning time to the total stormwater volume, varied between 60 and ...

Removal of norovirus from water by coagulation, flocculation and sedimentation processes

by IWA Publishing  (Feb. 4, 2015)

In this study, we determined the removal of a prototype human norovirus (Norwalk virus, NV) by bench-scale alum coagulation, flocculation and sedimentation processes using reverse transcriptase polymerase chain reaction (RT-PCR) for norovirus assays. After determining optimum conditions for the coagulation, flocculation and sedimentation ...

Sludge reduction at low ozone doses: predictive effects and full-scale study

by IWA Publishing  (Jan. 30, 2015)

The activated sludge process is the most widely used wastewater treatment. The main drawback of this technology is the excess sludge production (ESP). The ozonation of sludge of the recirculation line is used to reduce the ESP. In this study, ozonation was applied on a fraction of sludge of the recirculation line in a full-scale plant (50,000 ...

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

by IWA Publishing  (Jan. 23, 2015)

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 ...

Study of the sludge reduction in an oxic–settling–anaerobic activated sludge process based on UNITANK

by IWA Publishing  (Jan. 21, 2015)

An oxic–settling–anaerobic process (OSA) can effectively reduce sludge production, but most of the research studies on the OSA process have been either under laboratory test conditions or based on synthetic wastewater, which cannot fully reflect the performance and sludge reduction efficiency in existing OSA process. Thus, aiming ...

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

by IWA Publishing  (Jan. 21, 2015)

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 ...

Water quality monitoring with online change-point detection methods

by IWA Publishing  (Jan. 16, 2015)

We develop an approach for water quality time series monitoring and contamination event detection. The approach combines affine projection algorithms and an autoregressive (AR) model to predict water quality time series. Then, we apply online change-point detection methods to the estimated residuals to determine the presence, or not, of ...

Aerobic co-treatment of landfill leachate and domestic wastewater – are slowly biodegradable organics removed or simply diluted?

by IWA Publishing  (Dec. 19, 2014)

This study investigated the co-treatment of landfill leachate/domestic wastewater in bench-scale activated sludge (AS) reactors to determine whether the slowly biodegradable organic matter (SBOM) was removed rather than diluted. The AS reactors were loaded with mixtures of raw leachate and leachate that was pretreated by air stripping. The ...

Geospatial water quality assessment system for the Sg. Buloh river basin in Malaysia

by Inderscience Publishers  (Nov. 24, 2014)

Assessment of pollution risk requires the assimilation of spatio-temporally variable data on water quality parameters. This paper describes a GIS user-interface program coupled with a water quality index (WQI) model that was developed and built to assess water quality in the Sg. Buloh river basin. Fifty-two water sampling stations were selected ...

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