Laboratory Water Valve Articles | Environmental XPRT

Hydraulic characterization and transient response of pressure reducing valves: laboratory experiments

A pressure reducing valve (PRV) regulates the outlet pressure regardless of the fluctuating flow and varying inlet pressure, thereby reducing leakage and mitigating the stress on the downstream water distribution network (WDN). Notwithstanding the crucial importance of PRVs, few experimental data are available in the literature. The aim of this paper is to overcome this gap by means of the ...

Aug. 24, 2017

By IWA Publishing

A stochastic approach for extended partial blockage detection in viscoelastic pipelines: numerical and laboratory experiments

Partial blockages in water pipe networks may contribute to large energy dissipation throughout the system and reduce service effectiveness for customers. In this paper, a recently developed stochastic model using transients for detecting partial blockages in water pipelines is tested and numerical and experimental case studies are presented. The model is a stochastic successive linear estimator ...

Aug. 6, 2015

By IWA Publishing

Performance Testing of Conventional and Innovative Downhole Samplers and Pumps for VOC`s in a Laboratory Monitoring Well

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Jan. 1, 1992

By Solinst Canada Ltd.

Performance Testing of Conventional and Innovative Downhole Samplers and Pumps for VOC`s in a Laboratory Monitoring Well

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Aug. 31, 2005

By Solinst Canada Ltd.

Water Sustainability

I7.1 | Water Optimization – 30% Groundwater Use Reduction Tabatha Pellerin, Senior Program Manager, AECOM AECOM assisted the Entergy Lewis Creek gas/coal fired electric power plant with water conservation efforts prompted by a goal of 30% ...

Nov. 6, 2011

By Energy, Utility & Environment Conference (EUEC)

New markets and applications anticipated for HVAC damper and valve actuators

For over 30 years Schischek has been supplying electric explosion proof products for building services and HVAC applications in many industries, including onshore and offshore oil and gas, refineries, chemical plants, laboratories, pharmaceuticals, water treatment and ship building. The recent acquisition of the company by theRotork group of flow control companies presents new opportunities for ...

Dec. 1, 2013

By Rotork plc

Advanced Water Quality Techniques Course

Abstract:The development of a strategic water quality monitoring program is based on prioritizing risks to public safety and economic reality. The development of global standardized methods and protocols for automated water quality monitoring would facilitate international communication of water quality information and comparison of standardized methods and protocols. The three primary methods ...

Jan. 1, 2002

Application of unidirectional flushing in water distribution pipes

In this study unidirectional flushing (UDF) was conducted to improve the effectiveness of deposit removal from internal pipe walls and to provide information on pipe networks to enable operators to implement flushing in field. Four ductile cast iron pipes with epoxy-lined and cement-lined were selected for the practice of UDF. Water pressure was measured using a data logger equipped with a ...

Feb. 1, 2011

By IWA Publishing

Park City, Utah Arsenic removal from ground water

Background Park City Utah Water, which serves a population of 6,500, has five water sources. Spiro Tunnel and Spiro Portal are two that were in need of Iron and Manganese removal as well as above limits for Arsenic. Filtronics was engaged by the engineering firm of Eckhoff, Watson and Preator (EWP), Salt Lake City, to perform pilot tests for the Park City Municipal Corporation. The ...

Oct. 4, 2011

By Filtronics, Incorporated

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

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

Dec. 1, 1995

By Solinst Canada Ltd.

Sustainable wastewater separation treatment systems coupled with nutrient and water reducing greywater reuse technologies

Nationally and internationally, pressure is increasing to introduce nutrient reducing, water conserving and recycling measures for sustainable residential and small community water/wastewater systems. Reports of inadequate water quality and quantity are being reported daily. Over the past thirty years the federal government and State of Alaska have invested over 4 billion dollars installing piped ...

Sep. 15, 2011

TitraSip automated pipetting improves accuracy and precision over manual pipetting case study

MANTECH INC. is a leading manufacturer of automated multi-parameter, titration, BOD and COD laboratory instruments. MANTECH developed the first automated titrator in the world to include automated pipetting capability. In our short history, there are already >1000 TitraSip’s in daily use in accredited laboratories around the globe. The software controlled TitraSip module has proven to ...

Jul. 31, 2012

By MANTECH Inc.

AquaLab Analyzer provides real-time phosphorus measurement in Everglades

When it comes to ecosystem sustainability, Florida is no backwater. The South Florida Water Management District, which includes the unique Everglades habitat, had a major challenge. The EPA and various governmental authorities have defined limits for many water quality parameters to support a water body’s designated use. Any physical, chemical or biological condition that threatens the designated ...

Aug. 22, 2007

By Stevens Water Monitoring Systems, Inc.

Experimental observation on factors affecting intrusion volumes during low or negative pressure events

External water intrusion during low or negative pressure transient events in urban water supply systems may cause pollution and health problems. The volume of intrusion pollutants is one of the significant indicators that can reflect the degree of health risks when a pollution incident occurs. A pilot-scale platform was constructed in this study to simulate intrusion events, which were caused ...

Jun. 20, 2016

By IWA Publishing

The development of cation-exchange chromatography in free amino acids analysis

Although it was not called a liquid chromatograph, the first such instrument was introduced in late 1959 by Beckman Instruments and was designated the M.S. Amino Acid Analyzer in honour of Moore and Stein. Inject valves had yet to be invented, the buffer switching valves were glass stopcocks and the column temperature was controlled by circulating water baths. Two positive displacement pumps ...

Aug. 22, 2007

By Pickering Laboratories, Inc.

Stormwater Solids Reduction for NPDES Permits

Finally obtaining a National Pollution Discharge Elimination System (NPDES) Permit is often a relief but is by far not the end of the story. Meeting the requirements of that permit often proves to be quite difficult and stiff fines are freely doled out to those who fail to meet regulatory limits. For one Midwest jet propulsion manufacturing facility, the issue of total daily solids discharge ...

Jan. 1, 2006

By Amiad Filtration Systems Ltd.

Reducing the Detection Limits for a Process Moisture Analyzer

KEYWORDS Moisture Analyzer, Piezoelectric Sensor, Smart Transmitter, Internal Verification, Quartz-Crystal Microbalance ABSTRACT Piezoelectric moisture analyzers have been used in the process industry for over two decades. While this is an older technology for measuring moisture in gas phase samples, it is still one of the most reliable in ...

Jan. 1, 2001

By Ametek Process Instruments - THERMOX

Increased sample throughput for ICP-OES applied to U.S. EPA method 200.7

The application of an SC-FAST sample introduction system to the analysis of natural and certified water samples is described. The SC-FAST system consists of an autosampler, sample loop, switching valve, high efficiency nebulizer and a glass cyclonic spray chamber to perform analysis by direct nebulization. The potential benefits of this introduction system are numerous and include: increased ...

Oct. 28, 2011

By PerkinElmer, Inc.

GE Leakwise Application Notes: Oil Sheen Detection -- An Alternative to On-Line PPM Analyzers

Introduction Discharge of hydrocarbons in industrial water is restricted by environmental authorities in most countries to a few parts per million (ppm). Environmental authorities currently monitor wastewater, stormwater, and cooling water discharges from ...

Jan. 1, 2005

By GE Analytical Instruments

TOC analyser improves lab efficiency

Leading instrumentation company HACH LANGE is helping a number of key customers save valuable time and costs with its new IL550 TOC-TN analyser. TOC analysis is vitally important in applications ranging from power generation, wastewater, drinking water, surface water and ultrapure water, to agricultural soils, contaminated land and food. HACH LANGE analysers therefore offer a range of options ...

Jul. 24, 2009

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