combined environmental testing Articles

  • Advantages of Advanced Water Treatment Solutions

    Various advanced water treatment solutions are available for households as well as all types of facilities and industries. Water filtration provides users with valuable benefits that many don’t realize yet. Here are some of the advantages of water treatment solutions like an arsenic treatment system. Improved Water Quality A good arsenic filtration system ...

  • The true toxicity of combined pollutants in freshwater

    Aquatic organisms are exposed to many stressors, including a variety of pollutants from human activities. New research suggests that commonly used models in toxicological studies can fail to adequately predict the range of effects of complex mixtures of chemicals in aquatic environments. Stress caused by combinations of man-made pollutants found in water systems can compound the effects of ...

  • Water Quality Monitoring and Testing Using an Environmental Logger

    Intelligent dataTaker System from CAS DataLoggers Water disruptions typically occur after a large amount of water has rapidly collected in a catchment area. As a result this water is subject to continual monitoring and testing for a variety of chemical and biological agents as well as clarity, rate of movement, and water levels for environmental management. Turbidity, conductivity, ...


    By CAS DATALOGGERS

  • Combined effects of the cyanobacterial toxin microcystin‐LR and environmental factors on life‐history traits of indigenous cladoceran Moina macrocopa

    Environmental factors are important in that they might interact with toxicants and could affect the concentration‐response relationship of the toxicants in the water environment. Microcystins (MCs) produced by algal blooming are natural toxins that exert severe impact on aquatic organisms. Despite the possibility of interaction effects between environmental factors and MCs, very few studies ...


    By John Wiley & Sons, Ltd.

  • The influence of combined environmental stimuli on the evaluation of acoustical comfort: case studies carried out in an interactive simulation environment

    In automobiles, the perceived acoustical comfort is dependent on the vibro-acoustic exposure. To meet the customers' demands, acoustic engineers are asked for the optimisation of the vehicle's noise and vibration at early stages of the development. However, the task can only be adequately carried out if the interaction of noise and vibration and its impact on drivers' evaluations are well-known. ...


    By Inderscience Publishers

  • Combined Landfill Gas and Leachate Extraction Systems

    There is currently a shift of emphasis in the approach to treatment of landfill gas and leachate. Until recently, there have been two disparate schools of thought concerning the collection and disposal of these two by-products of organic waste degradation within the same bio-reactor. The tendency in the past has been to study gas and leachate as separate problems each of which requiring a ...


    By QED Environmental Systems

  • Whole Effluent Toxicity Testing

    What is Whole Effluent Toxicity (WET) testing? Whole Effluent Toxicity (WET) testing is an important component of the U.S. Environmental Protection Agency’s (USEPA’s) integrated approach for detecting and addressing toxicity in surface waters. The National Pollutant Discharge  Elimination System (NPDES) permit program, authorized by the Clean Water Act, controls water pollution by ...

  • Solutions for Automotive Testing

    In recent years, the field of research, development and testing of vehicles has created a need for integrated testing systems which cover the entire vehicle including engine and driveline. These systems also need to be capable of being deployed globally in a supportive structure. As a means of responding to these market requirements, building on our strengths in vehicle emissions measurement ...


    By HORIBA Europe GmbH

  • Vibration testing of fuel probes

    Aerial Refuelling The American Bell-Boeing V-22 Osprey is a multimission, military, tilt rotor aircraft with both a vertical and short takeoff and landing capability. It combines the functionality of a conventional helicopter with the high-speed cruise performance of a long-range turboprop aircraft. But even though it is long-range, some missions require in-flight refuelling. The V-22 Osprey can ...

  • Combining multimedia models with integrated urban water system models for micropollutants

    Integrated urban water system (IUWS) modeling aims at assessing the quality of the surface water receiving the urban emissions through sewage treatment plants, combined sewer overflows (CSOs) and stormwater drainage systems. However, some micropollutants tend to appear in more than one environmental medium (air, water, sediment, soil, groundwater, etc.). In this work, a multimedia fate and ...


    By IWA Publishing

  • Combined Remedies Treat Large Industrial Site - Case Study

    ABSTRACT BOS 100 was successfully implemented as part of a combined remedies strategy to treat elevated levels of Trichloroethylene in a shallow fine grained aquifer at a former large industrial facility. CHALLENGES A large industrial facility used vapor degreasing in the 1970s and 1980s that resulted in chlorinated volatile organic compound (CVOC) ...

  • Modelling of E. coli distribution in coastal areas subjected to combined sewer overflows

    Rivers, lakes and the sea were the natural receivers of raw urban waste and storm waters for a long time but the low sustainability of such practice, the increase of population and a renewed environmental sensibility increased researcher interest in the analysis and mitigation of the impact of urban waters on receiving water bodies (RWB). In Europe, the integrated modelling of drainage systems ...


    By IWA Publishing

  • Estimation of combined sewer overflow discharge: a software sensor approach based on local water level measurements

    Combined sewer overflow (CSO) structures are constructed to effectively discharge excess water during heavy rainfall, to protect the urban drainage system from hydraulic overload. Consequently, most CSO structures are not constructed according to basic hydraulic principles for ideal measurement weirs. It can, therefore, be a challenge to quantify the discharges from CSOs. Quantification of CSO ...


    By IWA Publishing

  • VOC control efficiency compliance test case study

    Skyworks Solutions, Inc. (Skyworks) selected CK to perform a compliance emissions testing program to determine the control efficiency of a new Roto-Concentrator followed by a thermal oxidizer (RC/TOx) used to control volatile organic compounds/hazardous air pollutants (VOC/HAP) from multiple manufacturing processes. A facility air permit condition required compliance testing of the subject RC/TOx ...


    By CK Environmental, Inc.

  • Environmental forensics: courting science?

    Forensics and hydrology are two terms that may not seem to go together well. To the uninitiated, this combination may evoke images of the crime scene investigation that ensues when some patsy goes into the drink wearing cement overshoes. Rather, the term environmental forensics, essentially the parent discipline of forensic hydrology, has found its way into contemporary parlance owing to ...


    By Hargis + Associates Inc

  • Control of Aerosol Contaminants in Indoor Air: Combining the Particle Concentration Reduction with Microbial Inactivation

    ABSTRACT An indoor air purification technique, which combines unipolar ion emission and photocatalytic oxidation (promoted by a specially designed RCI cell), was investigated in two test chambers, 2.75 m3 and 24.3 m3, using nonbiological and biological challenge aerosols. The reduction in particle concentration was measured size selectively in realtime, and the Air Cleaning Factor and the Clean ...


  • Completely Integrated Environmental Management

    Environmental information management isn't what it used to be. It's no longer about software programs that manage data and write reports, but whole programs that do everything. As a wider array of companies offer environmental information management systems (EMIS), and as in-house and desktop software solutions have become more common, EMIS options become wide indeed. EH&S managers are ...


    By Chemical Safety Software

  • World’s largest compressible media filtration plant eliminates combined sewer overflows, with potential for dry-weather use

    The City of Springfield, Ohio, recently opened its 100 MGD enhanced high-rate treatment facility, designed to treat and disinfect combined high-volume stormwater and wastewater flows generated by wet-weather conditions. Utilizing EPA-documented Compressible Media Filtration technology – FlexFilter™ from WesTech – the system can also provide tertiary filtration and disinfection ...


    By WesTech Engineering, Inc.

  • OECD workshop on the environmental assessment of metals

    I recently contributed to a workshop organised by the OECD which was aimed at raising awareness of the various approaches that have been developed (mostly in Europe and North America) for performing hazard assessments for metals. The workshop covered a broad variety of issues such as how to deal with the very large datasets that are available for some metals, ensuring that data are both reliable ...


    By WCA Environment Ltd.

  • A cure for Environmental Emissions case study

    Disposing of nearly 1 million pounds of medical waste a month is no easy task. The wet electrostatic precipitator, installed at Rochester, MN-based Mayo Clinic, seems to be just what the doctor ordered. While the medical waste incinerator at Mayo Clinic in Rochester, MN, consistently met state and federal emission requirements, facility leadership recognized that installing a wet electrostatic ...


    By Bionomic Industries Inc.

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