domestic lighting Articles

  • Potential impacts of on-site greywater reuse in landscape irrigation

    This study investigated the effects of irrigation with different types of waters on soil, plants, and public health. The test plant was ryegrass grown in 12 planters filled with sandy loam soil and irrigated with three types of waters (4 planters for each type): freshwater, raw domestic light greywater (GW), and treated domestic light GW. The sodium adsorption ratio (SAR), EC, pH and alkalinity ...


    By IWA Publishing

  • Analysis of water pricing in Ireland and recommendations towards a more efficient water sector

    Within Ireland, both the public water supply and group water scheme (GWS) sectors are crucial entities in the provision of water supply to individuals. In this study, variances in water charges and operation are assessed via an in-depth survey of 104 GWSs in order to establish the range in both domestic and commercial charges, and also to establish the factors influencing these charges within ...


    By IWA Publishing

  • Fate of effluent organic matter during soil aquifer treatment: biodegradability, chlorine reactivity and genotoxicity

    Hydrophobic acid (HPO-A) and transphilic acid (TPI-A) fractions of dissolved organic matter (DOM) were isolated from a domestic secondary wastewater effluent that was polished via soil aquifer treatment (SAT). Fractions were isolated using XAD resin adsorption chromatography from samples obtained along the vadose zone flowpath at a full-scale basin recharge facility in Tucson, Arizona. Changes in ...


    By IWA Publishing

  • 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

  • Quantification and characterization of greywater from schools

    Survey of schools of different education levels (primary, intermediate and secondary) in Kuwait showed an average greywater generation rate of 7.3 L/p/d and varied in the range of 2.9–16 l/p/d, reflecting the school level of education (i.e. student age). The highest rates were observed for primary schools while the lowest rates were observed in secondary schools where students are more mature ...


    By IWA Publishing

  • Good Prospect in China Seamless Steel Pipe Industry

    Seamless steel pipe industry maintains a strong development momentum, and it is an important material in the national economic construction. Seamless steel pipe is a kind of economical steel, which is widely used in petroleum, electric power, chemical, coal, machinery, military, aerospace and other industries, countries around the world, especially industrial developed countries have attached ...


    By Derbo Steel Pipe Co., Ltd.

  • Greenhouse Gas Mitigation in Australia: An Overview of the Current Policy Landscape

    This report outlines Australia’s policy framework for greenhouse gas emissions reduction, identifies areas of potential change in the near term, and attempts to evaluate the impact of current policies on Australia’s emissions trajectory to 2020. It assesses Australia’s international commitments, and the major policies of federal and state institutions to reduce emissions. It ...

  • On the up

    The global carbon markets traded an estimated € 92 billion worth of carbon credits in 2008. 4.9 billion t of CO2 equivalent (CO2e) of greenhouse gas (GHG) reductions changed hands under the various international, regional, national and sub-national carbon trading schemes that together make up the global carbon marketplace. These figures demonstrate the phenomenal expansion and maturation of the ...

  • 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 ...


  • 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

  • China anticipates aluminium boom

    The boom in China’s aluminium exports is driving an increase in domestic light metal production and consumption, industry insiders told the China International Non-ferrous Metals Market Conference 2007 held recently in Hong Kong.China is set to produce 12.4 million tonnes of primary aluminium this year - an increase of 32% compared to 2006 - while capacity is set to reach 15.7 million tonnes, ...


    By Recycling International

  • Limits of UV disinfection: UV/electrolysis hybrid technology as a promising alternative for direct reuse of biologically treated wastewater

    Although UV irradiation represents an energy efficient disinfection method, bacterial regrowth in UV irradiated secondary effluents is a serious problem for their direct reuse (e.g., for domestic or irrigation purposes). The decrease of the lethal UV fluence caused by coverings (scaling and biofouling) on quartz sleeves of UV lamps and/or fluctuating specific water parameters (suspended solids, ...


    By IWA Publishing

  • Quantification and characterization of greywater from schools

    Survey of schools of different education levels (primary, intermediate and secondary) in Kuwait showed an average greywater generation rate of 7.3 L/p/d and varied  in the range of  2.9 – 16 L/p/d, reflecting the school level of education (i.e. student age). The highest rates were observed for primary schools while the lowest rates were observed in secondary schools where students ...


    By IWA Publishing

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