flushing system Articles

  • Soil Flushing

    Introduction In situ soil flushing is the extraction of contaminants from the soil with water or other suitable aqueous solutions. Soil flushing is accomplished by passing the extraction fluid through in-place soils using an injection or infiltration process. Extraction fluids must be recovered from the underlying aquifer and, when possible, they are recycled. Cosolvent Enhancement Cosolvent ...

  • Woodside goodwyn - treating flushing fluid

    Client: Woodside Goodwyn During a scheduled shutdown on the Goodwyn platform, Woodside contracted CETCO Oilfield Services to treat the fluid generated during a flushing operation on the Goodwyn West Alpha condensate (water) stripping column T-100 and, install a permanent CETCO adsorption OIW (Oil in Water) package. During the shutdown of the Goodwyn platform, the vessel was drained, purged with ...


    By CETCO Energy Services

  • The application of improved flow diverter for first flush management

    The paper presents the investigations on first flush phenomenon based on the total suspended solids (TSS) concentration measurement during selected rainfalls at central part of Czestochowa (Poland) and also the hydrodynamic model of the catchment. The model allows to present the conception of first flush management using an improved flow diverter Septurn. Flow diverters used in the separate sewer ...


    By IWA Publishing

  • The application of improved flow diverter for first flush management

    The paper presents the investigations on first flush phenomenon based on the total suspended solids (TSS) concentration measurement during selected rainfalls at central part of Czestochowa (Poland) and also the hydrodynamic model of the catchment. The model allows to present the conception of first flush management using an improved flow diverter Septurn. Flow diverters used in the separate sewer ...


    By IWA Publishing

  • Muller + Muller`s lakefront restrooms flush with rainwater

    A pair of highly sustainable comfort stations debuted on Chicago's lakefront over the summer, at 5800 North and 4000 South. Designed by Muller + Muller Architects, the seasonal-use brick structures use natural ventilation, daylighting and low-maintenance materials to minimize their ongoing use of resources. But prime among the pair of buildings' low-impact strategies is the use of captured ...

  • 16 Oxiperm Pro disinfection systems with flushing capacity for Messe München

    The exhibition organisers need to provide different amounts of domestic water for different kinds of exhibitors. For example, an IT industry exhibition needs a different amount of water to a watersports exhibition. This means that the domestic water pipes need to be designed on basis of the shows which need largest volumes of drinking water. With all sorts of different occupants in the Munich ...


  • Using ATP measurements to optimize and validate flushing activities

    A Louisiana, USA municipality performed a survey of their potable water distribution system in September 2013. A total of 47 sample taps were tested for Free Chlorinie, Total Chlorine, and Cellular ATP using LuminUltra's Quench-Gone Aqueous (QGA) test kit.  Summary of Findings  The results of the initial survey showed that more than half of the sample points carried less ...


    By LuminUltra Technologies Ltd.

  • 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 ...


    By IWA Publishing

  • Development of integrated management system (ISTORMS) for efficient operation of first flush treatment system for urban rivers

    An integrated management system was developed for the efficient operation of a storm water treatment unit to assist in the management of urban river water quality and flow. The SWMM hydrological model was calibrated and then used to predict the hydrograph and concentration graphs of surface runoff from a storm events based on weather forecasts. These results are used to decide how to operate ...


    By IWA Publishing

  • Real-time control of combined surface water quantity and quality: polder flushing

    In open water systems, keeping both water depths and water quality at specified values is critical for maintaining a ‘healthy’ water system. Many systems still require manual operation, at least for water quality management. When applying real-time control, both quantity and quality standards need to be met. In this paper, an artificial polder flushing case is studied. Model Predictive Control ...


    By IWA Publishing

  • The effect of material and flushing water type on urine scale formation

    One of the important challenges with current sanitation practices is pipe blockage in urinals caused by urine scale formation. Urinal material and flushing water type are the two most important factors affecting scale formation. This paper examines the scale formation process on different materials which are commonly used in urinal manufacturing and exposed to different urine-based aqua ...


    By IWA Publishing

  • The influence of particle size on the first flush strength of urban stormwater runoff

    The presence of a first flush (FF) of suspended solids (SS) in stormwater runoff has important implications for the design of treatment facilities, as does the particle size of solids. Whilst numerous studies have examined the FF behaviour of SS, few have disaggregated FF trends by particle size. In this study, the FF behaviour of SS was investigated in five size ranges, sampled from an urban ...


    By IWA Publishing

  • Effect of first flush on storage-reliability-yield of rainwater harvesting

    Rainwater harvesting (RWH) entails capture of rainwater falling on a roof and conveyance to a storage tank for later use as domestic water supply. During dry weather, dust and pollutants accumulate on the roof surface and are subsequently washed off with the ‘first flush’ at the beginning of the next rain. Diverting the first flush can improve the quality of stored water but at the cost of ...


    By IWA Publishing

  • The Economic Argument for Flushing Optimization, and How ATP Monitoring Can Help

    As a way of controlling fouling in water distribution lines, utilities often conduct system-wide flushing cycles to clear lines of sediment, biofilm, and other accumulated material to maintain good water quality for customers. This can be done on an annual basis or as dictated by water technicians if more frequent flushing is needed. Take the city of Parker, Colorado (Population = 46,363) as an ...

  • A compact reactor system for processing grey water and its reutilization for flushing toilet bowls

    In this contribution, a compact reactor system is presented that enables efficient processing of grey water in order to facilitate its reutilization for flushing toilet bowls. The treatment of collected grey water is performed in combination with an aerobic/anoxic biological process carried out in a submersed bioreactor with immobilized biomass for the removal of dissolved organic substances, ...


    By IWA Publishing

  • Integrating evolution strategies and genetic algorithms with agent-based modeling for flushing a contaminated water distribution system

    Water utilities can prepare for water distribution hazards, such as the presence of contaminants in the pipe network and failure of physical components. In contamination events, the complex interactions among managers' operational decisions, consumers' water consumption choices, and the hydraulics and contaminant transport in the water distribution system may influence the ...


    By IWA Publishing

  • Washoff behavior of in-sewer deposit in combined sewer system through artificial flushing experiment

    In-sewer deposits in combined sewer systems (CSSs) are closely related with the behavior of first foul flush and combined sewer overflows. However, the research paying attention to the role of in-sewer deposits is quite rare, furthermore, their contributions for the washoff patterns of each pollutant including pathogenic microorganisms are almost never discussed so far. The artificial flushing ...


    By IWA Publishing

  • A case study of the conversion of grey water to a flush water source in a Turkish student residence hall

    A case study of the conversion to grey water to a flush water source in a student residence hall of the Turkish megacity Istanbul is presented. Grey water from bathtubs/showers and washbasins is treated and reused for flushing toilets. Raw and membrane bio-reactor (MBR) treated grey water quality was monitored throughout one academic year using parameters to characterize organic matter ...


    By IWA Publishing

  • Combined seawater toilet flushing and urine separation for economic phosphorus recovery and nitrogen removal: a laboratory-scale trial

    Freshwater toilet flushing consumes 20–35% of typical household water demand. Seawater toilet flushing, as practised by Hong Kong since 1958, provides an alternative water source. To maximise the benefits of this unique dual water supply, urine separation could be combined to allow low-cost struvite production and subsequent urine nitrification – in-sewer denitrification. ...


    By IWA Publishing

  • Amiad Filtration Systems - Amiad’s Suction Scanning System

    The following is a brief description of how a suction scanning filter operates. Dirty water flows into the filter through the inlet flange at the bottom of the filter body as shown in Figure A-1. Water then proceeds through the cylindrical 316L screen element from the inside out causing particulates larger than the filtration degree (pore size) of the screen to accumulate on its inside surface ...

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