domestic lighting system Articles

  • Shining a light on sludge

    HACH LANGE's Solitax turbidity/ suspended solids sensor has been integrated into a tanker reception system to enable the measurement of solids concentration in wastewater movements to and from treatment plants and in trade waste applications for monitoring strengths of imported wastes. JR Pridham Services Ltd (JRP) developed the system to provide visibility of both quantitative and qualitative ...


  • Material selection for a constructed wetroof receiving pre-treated high strength domestic wastewater

    A constructed wetroof (CWR) is defined in this study as the combination of a green roof and a constructed wetland: a shallow wastewater treatment system placed on the roof of a building. The foremost challenge of such CWRs, and the main aim of this investigation, is the selection of an appropriate matrix capable of assuring the required hydraulic retention time, the long-term stability and the ...


    By IWA Publishing

  • A Regulatory Perspective on Maintenance of Disinfection Systems

    ABSTRACTThe Clean Water Act contains requirements to set water quality standards for all contaminants, including bacterial contaminants, in surface waters. Wastewater treatment cannot be expected to remove all of the bacterial contaminants, and as a result, many organisms remain in the waste stream. Therefore, disinfection of treated wastewaters is designed to reduce bacterial numbers to a safe ...

  • Total Energy Management System: Ayers Rock Resort

    Ayers Rock Resort operates in the semi-arid conditions of the Central Australian desert. Since electricity is a major component of running costs, the Resort has installed a computer based preventative maintenance monitoring system, which links all facilities at the Resort and enables tracking of energy costs by process and item of equipment. A monthly energy audit process, together with the newly ...


  • Climate change and a European low-carbon energy system

    Summary This report presents an assessment of possible greenhouse gas emission reduction pathways made feasible by global action and a transition to a low-carbon energy system in Europe by 2030. It analyses trends and projections for emissions of greenhouse gases and the development of underlying trends in the energy sector. It also describes the ...

  • Introduction to Decentralized Packaged Wastewater Treatment (PWWT) Systems - PDH Article

    Learning Objectives After reading this article, you should understand: Functions and processes of a decentralized PWWT system; Design considerations of a PWWT system. Overview "Clean water will be the oil of the 21st Century." The accuracy and magnitude of this statement is resonating worldwide. ...

  • Use of CFD Modelling to Optimise the Design of Upper-room UVGI Disinfection Systems for Ventilated Rooms

    AbstractThe installation of upper-room ultraviolet germicidal irradiation (UVGI) devices in ventilated rooms has the potential to reduce transmission of infections by an airborne route. However, the performance of such devices is dependant on several factors including the location of the lamp and the ventilation airflow in the room. This study uses a CFD model to evaluate the performance of UVGI ...


    By SAGE Publications

  • Nitrogen and carbon removal efficiency of a polyvinyl alcohol gel based moving bed biofilm reactor system

    In this study, the effectiveness of polyvinyl alcohol (PVA) gel beads in treating domestic wastewater was investigated: a moving bed biofilm reactor (MBBR) configuration (oxic-anoxic and oxic) with 10% filling fraction of biomass carriers was operated in a continuously fed regime at temperatures of 25, 20, 15 and 6 °C with hydraulic retention times (HRTs) of 32 h, 18 h, 12 h and 9 h, ...


    By IWA Publishing

  • 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 ...


  • Impact lead the way in paper and glass separation

    Impact Air Systems was recently contacted by one of the UK's leading recycling led waste management companies to help them improve the process following the recent introduction of domestic glass into the material stream. The company involved have requested to remain anonymous, but currently operate 6 large scale operations in the UK.   We were called to their facility in the West ...


    By Impact Air Systems

  • An end to the problem of particle emissions

    Austrian biomass heating systems guarantee an 80% cut in emissions. Recent studies have shown that these modern domestic boilers offer a significant reduction in particles, emitting fewer contaminating agents than previous generation boilers and wood stoves – with more than 100mg / ml of particles. The future will be based on new biomass combustion technology which cuts dust emissions from ...

  • Article: Non-Trade Concerns and Agriculture in a Post-Doha Environment: Thinking Outside the Green Box

    ABSTRACT International agricultural trade regulation is once again at the heart of the Doha Development Round's collapse. Even if a deal had been reached on the basis of the Draft Modalities on Agriculture, it is not clear that a fundamental problem would be resolved: the relationship between trade and non-trade concerns, crucially the protection of the environment. Currently, members can use ...


  • Book Reviews: Socially Responsible Investment Law: Regulating The Unseen Polluters

    Keywords: Sustainable development, environmental liability, attribution of environmental costs, post-enlightenment economic rationality, preventative principles, environmental authoritarianism. Since publication of Socially Responsible Investment Law we have witnessed the 'credit crunch' and its aftermath, with concerns now widespread as to the risks of so-called light-touch regulation of ...


  • Aqueduct Global Maps 2.0

    Executive Summary This document describes the specific characteristics of the indicator data and calculations for the Aqueduct Water Risk Atlas Global Maps. Complete guidelines and processes for data collection, calculations, and mapping techniques are described fully in the Aqueduct Water Risk Framework.1 The Aqueduct Water Risk Atlas makes use of a Water Risk Framework (Figure 1), that includes ...

  • Do not make the waste energy saving lamps into a scourge

    As early as August 1, 2008, the national list of hazardous waste had been the recovery of the energy saving lamps included. However, for waste energy saving lamps may harm caused to the environment and human health, the public did not know. Until now, energy saving lamp recycling policy is still blank. How future waste disposal? Than ordinary incandescent lamp,  ...

  • Case Note: Environmental Risks, Rights and Black Swans

    Keywords: Environmental rights, risk, European Court of Human Rights, black swans INTRODUCTION While it by now is well-established that certain environmental risks may trigger human rights responsibilities upon governments, a close examination of the exact perimeters of this assessment, as developed by human rights tribunals, alerts us to the explanatory ...


  • Development of food machinery industry will intelligent and automatic

    Food Machinery as an important integral part of the food industry has ushered in the golden age of development after several years of development. Food machinery industry has become a real commodity related products, and as people's living standards improve, the development prospects of this industry has become even more broad.  ...


  • M-Coating – drain & sewer spraylining the economical solution to manhole shaft renovation

    M-Coating – Procedure for renovating a manhole shaft using ERGELIT Kombina KS M-Coating is a new, innovative renovation technique for both round and rectangular drainage shafts from 500mm to 1200mm. It is based on over 15 years of the Hermes company’s experience. Using this centrifuge spray technique, walls of shafts up to 10 metres deep can be coated to a realistic thickness. ...


    By HERMES Technologie Ltd.

  • Recycling market woes

    Recycling markets in the U.S. recently succumbed to the volatility of the global economy. Virtually every major recycled commodity saw dramatic price reductions at the end of October. Fiber products in particular have taken a gigantic hit. Cardboard in the Northeast crashed from $120/ton to $30/ton in one week. Mixed paper dropped from about $50/ton to $5/ton. Newsprint also has fallen from ...


    By BioCycle Magazine

  • What Are Solar Buildings Technologies?

    Solar buildings technologies use the non-polluting power of the sun to help heat, cool, and power our buildings. Because buildings now use one-third of the energy currently consumed in this country, the potential markets for using solar buildings technologies in place of conventional ones is substantial. Whether you're a home owner, architect, builder, business owner, or industry or utility ...

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