Turbidity Monitoring Articles

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How & Why We Measure Suspended Solids

by Partech (Electronics) Ltd.  (Jul. 10, 2016)

In case you weren’t sure, Suspended Solids is simply a density measurement used to describe exactly how much waste sludge and particles are in the water, and is measured in milligrams per litre (mg/l), grams per litre (g/l) or percentage solid (%). 1000mg/l = 1g/l = 0.1%. It is used to calculate the amount of material, or load, in a ...

Pilot-scale study of powdered activated carbon recirculation for micropollutant removal

by IWA Publishing  (Jun. 9, 2016)

Adsorption onto powdered activated carbon (PAC) is a promising technique for the removal of organic micropollutants (OMPs) from treated wastewater. To enhance the adsorption efficiency, PAC is recycled back into the adsorption stage. This technique was examined in pilot scale in comparison to a reference without recirculation. Coagulation with ...

Destabilization dynamics of clay and acid-free polymers of ferric and magnesium salts in AMD without pH adjustment

by IWA Publishing  (Jun. 6, 2016)

The physicochemical treatment was employed to treat acid mine drainage (AMD) in the removal of turbid materials using clay only (exp A) and a combination of clay, FeCl3 and Mg(OH)2 (exp B) to form a polymer. A 5 g sample of clay (bentonite) was added to 1.2 L of AMD and treated in a jar test at 250 rpm for 2 min and reduced to 100 rpm for 10 ...

Multi-barrier water treatment cleans up turbidity spikes

by WesTech Engineering, Inc.  (Apr. 12, 2016)

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), they needed a fast, innovative solution. Under the IESWTR, the city was challenged to meet regulatory ...

Removal of clomazone herbicide from a synthetic effluent by electrocoagulation

by IWA Publishing  (Mar. 23, 2016)

The aim of this work was to investigate the kinetics of removal of clomazone herbicide from an aqueous solution by electrocoagulation. The experiments were performed in a cylindrical batch reactor with six aluminum electrodes in monopolar mode, arranged in series and connected to a digital DC power. The aqueous solution (tap water + clomazone) ...

Assessment of groundwater quality in the Seraidi region (north-east of Algeria) using NSF-WQI

by IWA Publishing  (Mar. 12, 2016)

Scarcity of water, pollution load, political issues and rising population have drawn great attention for proper management of water resources such as groundwater in the 21st century. The evaluation of groundwater quality is a critical element in the assessment of water resources. The quality/potability of water that is consumed defines the ...

Polishing of treated palm oil mill effluent (POME) from ponding system by electrocoagulation process

by IWA Publishing  (Mar. 7, 2016)

As the ponding system used to treat palm oil mill effluent (POME) frequently fails to satisfy the discharge standard in Malaysia, the present study aimed to resolve this problem using an optimized electrocoagulation process. Thus, a central composite design (CCD) module in response surface methodology was employed to optimize the interactions ...

Application performance of a new coagulant in wastewater reuse

by IWA Publishing  (Feb. 2, 2016)

Ultraviolet (UV) absorption characteristics of poly-Al-Zn-Fe (PAZF), a polymerized coagulant containing three kinds of metallic elements prepared from a galvanized-aluminum slag, was analyzed by UV-visible spectrophotometry during its polymerization process. Pollutant removal by PAZF in treating various wastewaters was investigated, in ...

Nested-PCR and TaqMan real-time quantitative PCR assays for human adenoviruses in environmental waters

by IWA Publishing  (Jan. 20, 2016)

Human adenovirus (HAdV) infections can occur throughout the year. Cases of HAdV-associated respiratory disease have been more common in the late winter, spring, and early summer. In this study, to provide viral pollution data for further epidemiological studies and governmental actions, the presence of HAdV in the aquatic environment was ...

Partech Water Instruments Case Study: Landfill Turbidity and Dosing Control - Case Study

by Partech (Electronics) Ltd.  (Jan. 12, 2016)

Set in one of Devon’s most beautiful river valleys Deep Moor is a haven for aquatic wildlife and therefore the site needs to be careful not to have any detrimental effects on the environment. Partech have been working closely with Greenacre Pumps of Newton Abbot in order to provide an extremely reliable and cost-effective dosing system. The ...

TURBIDITY BARRIER ULTIMATE GUIDE

by Enviro-USA American Manufacturer, LLC  (Jan. 5, 2016)

TURBIDITY BARRIER ULTIMATE GUIDE Definition Floating turbidity barriers (a.k.a. silt curtains, silt boom, sediment curtain) are a temporary in-water sediment barrier consisting of a continuous geotextile fabric curtain suspended from a flotation device on the water surface and held in ...

The effect of operating parameters on the performance of a biosand filter: a statistical experiment design approach

by IWA Publishing  (Dec. 29, 2015)

The influence of three important parameters, namely, pause time, charge volume and influent turbidity on the performance of a biosand filter (BSF) was assessed by employing response surface methodology with a Box-Behnken design. Fifteen runs were conducted in triplicate using a full-scale BSF with a pore volume of 19.6 L, and the performance ...

Competitive mechanism of ammonia, iron and manganese for dissolved oxygen using pilot-scale biofilter at different dissolved oxygen concentrations

by IWA Publishing  (Dec. 29, 2015)

In this study, the competitive mechanism of ammonia, iron and manganese for dissolved oxygen (DO) in a biofilter was investigated, and a new start-up method of a biofilter for ammonia, iron and manganese removal was approved, which can effectively shorten the start-up period from 3–4 months to 51 days. The results demonstrated that when DO ...

Modelling of suspended sediment in a weir reach using EFDC model

by IWA Publishing  (Dec. 21, 2015)

Construction of hydraulic structures often leads to alteration of river dynamics and water quality. Suspended solids entering the upstream of the weir cause adverse effects to the hydroecological system and, therefore, it is necessary to build a modelling system to predict the changes in the river characteristics for proper water quality ...

Removal of Giardia spp. and Cryptosporidium spp. from water supply with high turbidity: analytical challenges and perspectives

by IWA Publishing  (Dec. 18, 2015)

Giardia and Cryptosporidium species are a serious problem if present in water supplies. The removal of these protozoans and the adaptation of existing protocols are essential for supplying drinking water to developing countries. Considering this, the aim of this study is to evaluate, on a bench level, the removal of Giardia spp. cysts ...

An investigation into the relationship between water quality volume (design storage volume) and stormwater wetland performance

by IWA Publishing  (Dec. 17, 2015)

An investigation on free water surface wetland, which has an area of 0.23 ha and is employed to control the non-point source pollution from a watershed of 7.4 ha, was carried out to examine how the WQvr (the ratio of stormwater inflow volume to water quality volume (WQv)) affects the wetland treatment performance. As stormwater went through ...

Meet the Partech Distributor – Stig Wahlström

by Partech (Electronics) Ltd.  (Dec. 10, 2015)

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 ...

Continuous flow electrocoagulation in the treatment of wastewater from dairy industries

by IWA Publishing  (Dec. 10, 2015)

Dairy industry wastewater contains high levels of organic matter, consisting mainly of fat, protein and products of their partial microbial decomposition. In the present study, the use of continuous electrocoagulation is proposed for the primary treatment of dairy wastewater. The electrochemical treatment was carried out in a continuous flow ...

Spatial and temporal variations of water quality in an artificial urban river receiving WWTP effluent in South China

by IWA Publishing  (Nov. 26, 2015)

Urban wastewater treatment plant (WWTP) effluent as reclaimed water provides an alternative water resource for urban rivers and effluent will pose a significant influence on the water quality of rivers. The objective of this study was to investigate the spatial and temporal variations of water quality in XZ River, an artificial urban river in ...

A study on the estimating of sediment concentration with turbidity and acoustic backscatter signal for different sediment sizes

by IWA Publishing  (Nov. 11, 2015)

Turbidity and acoustic measurement are alternative indirect methods to determine sediment concentration. Acoustic Doppler velocimetry can be used to estimate suspended sediment concentration (SSC) with the signal-to-noise ratio (SNR) in the water. In this study, particles size affecting turbidity and SNR values was investigated using four ...

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