water recycling Articles

  • Recycle of waste backwash water in ultrafiltration drinking water treatment processes

    In drinking water treatment, ultrafiltration (UF) membrane systems are generally operated at 90 to 95% recovery with production losses resulting from waste residual streams such as backwash water and clean-in-place (CIP) liquid residuals. In drought-prone regions, it may be desirable to apply alternative UF plant design configurations to increase recovery rates and minimize water loss. This ...


    By IWA Publishing

  • Biosolids Minimization using Integrated Alkaline Sludge Hydrolysis and Biological Nutrient Removal Process

     ABSTRACT This paper presents a pilot-scale evaluation of an integrated approach to sludge management utilizing a combination of biological nutrient removal and biosolids alkaline hydrolysis, as well as attempts to explore the impact of recycled alkaline hydrolysates on sludge yield and anaerobic digestion. The novel concept of converting an existing conventional activated sludge (CAS) ...

  • Occurrence of N-nitrosodimethylamine precursors in wastewater treatment plant effluent and their fate during ultrafiltration-reverse osmosis membrane treatment

    The formation of N-nitrosodimethylamine (NDMA) is of major concern among wastewater recycling utilities practicing disinfection with chloramines. The NDMA formation potential (FP) test is a simple and straightforward method to evaluate NDMA precursor concentrations in waters. In this paper we show the NDMA FP results of a range of tertiary wastewater treatment plants that are also the source for ...


    By IWA Publishing

  • Grey water recycling for Taylor Wimpey

    Taylor Wimpey opt for Grey Water recycling The national developer and household name Taylor Wimpey has opted to include the "Aquawiser" grey water recycling system at a large housing development in Kent. The scheme will be offering a mix of houses and apartments Aquaco's grey water system. Grey Water Systems involve the collection of bath water and shower water which is then ...

  • Biosolids Recycling: An Assessment of Public Perception and Knowledge

    A descriptive-correlational study was conducted in a four county metropolitan area in the southeast United States (U.S.) to determine attitudes and knowledge about biosolids recycling. Eight biosolids land application site options (farmlands, grazing lands, public parks, highway medians, home gardens, lawns, forest lands, and use as mulch after composting) were assessed by each of the 303 ...

  • The Reuse Loop Hoops

    ABSTRACTThe San Antonio Water System owns and operates the nation's largest recycled water distribution system, which is tied to several major water recycling centers and constructed as a 'reuse loop' around almost the entire metropolitan area. In addition to providing recycled water to commercial and industrial customers, the dual-use system also provides streamflow ...

  • High-Purity Water from Wastewater…A “Rare” Opportunity

    A cooperative water recycling effort between a major U.S. water/wastewater utility and a large oil refinery will provide significant benefits for both parties and will serve as a blueprint for future cooperative efforts between public agencies and industries.The East Bay Municipal Utility District (EBMUD), located in the eastern portion of the San Francisco Bay Area, is implementing the Richmond ...

  • Case Study- Industrial laundry facility

    BEFORE RECYNOV-L 50 m3/day of water heated to 60 ° AFTER RECYNOV-L 80% of recycled water, reusable and already heated to 60 ° Only 10 m3/day of water to be heated CUSTOMER TESTIMONY What solution was used before NEREUS? The recycling solution ...


    By Nereus SAS

  • Microfiltration for treatment of waste filter washwater at water treatment plant

    The North Jersey District Water Supply Commission (Commission) serves about 2 million consumers from its 210 mgd water treatment plant (WTP) in Wanaque, New Jersey, about 25 miles northwest of Manhattan. Raw water is obtained primarily from the adj acent Wanaque Reservoir, and the nearby Pompton and Ramapo Rivers. The Wanaque WTP provides conventional treatment with chiorine as primary ...


    By Pall Corporation

  • Treatment of Spent Filter Backwash Wastewater Using Dissolved Air Flotation Process

    Spent Filter Backwash Water (SWW) is a major recycle stream that accounts for 10% (about 30 mgd) of the average flow at Blue Plains Advanced Wastewater Treatment Plant (AWTP) and a similar proportion of nitrification and denitrification treatment process capacity (DCWASA Focus, November 2004). The peak SWW flow and load result from increased filter washing during high flow events. The combined ...

  • North Sydney high rise to recycle three million litres of water per year.

    The Ark building, the new landmark on the North Sydney CBD skyline, is set to recycle up to three million litres of water annually thanks to its greywater recycling plant. Located at 40 Mount Street, the Ark was completed in May this year and represents the first high-rise commercial building to achieve 6 Star Green Star V2 Design rating in NSW. Its rating can be attributed to sustainable ...

  • Talking about Water Recycling

    Introduction Community understanding of water and environmental issues is increasing. In some cases water recycling projects have been controversial but also there have been many successful projects with strong public support. Considerable experience has been gained about the issues affecting community acceptance of water recycling and the conduct of community ...


    By IWA Publishing

  • Greywater recycling system

    Every new home should have a Grey Water Recycling System! This innovative new product allows you to re-use your greywater (previously wasted) and recycle it for use on your gardens or reuse back through the toilets for flushing or in the laundry. Right now this is so important with low water levels, and water prices and council restrictions on the increase. The Ozzi Kleen GTS10 Greywater system's ...

  • Spragues’ Ready Mix deploys closed loop recycling equipment - Case Study

    California’s Spragues’ Ready Mix (SRM) has deployed the first closed-loop recycling equipment combination of its kind: A concrete reclaimer separating fine and coarse aggregate, coupled with a slurry-recycling filter that dewaters cement fines to yield nearly ASTM C-94 grade batch water (less than 60 ppm). The company decided to purchase the Liebherr LRS 708 Concrete Reclaimer and ...


    By ALAR Engineering Corporation

  • Wastewater Treatment Plant

    Water is basic to life. It is a precious resource and has become precious commodity now. On going Industrialization, population & urbanization pose pressure on water availability. Utility value of world’s freshwater resources like lakes and rivers are diminishing rapidly due to over exploitation & pollution. Groundwater, an alternative to surface water is also a natural ...


    By Sugam Paryavaran Vikalp

  • An interdisciplinary approach to the assessment of water recycling technology options

    Whilst work on the development of engineering options for water recycling has continued apace over the last decade, less attention has been paid to the problem of selecting appropriate technologies for particular applications. This paper firstly reviews the motivations for a cross-disciplinary approach to technology selection in this context, highlighting the process of translating research ...


    By Inderscience Publishers

  • Wastewater Treatment & Recycle

    Fresh water is a scarce commodity; this fact is well acknowledged by one and all. People at all levels be it general public, governmental bodies, and industries understand the implications of good quality water availability in terms of quantity, cost and wastage. As a consequence, there is a growing consensus on wastewater treatment for recycle/reuse. This paper briefly describes the treatment ...

  • VSEP recycles 80% of water for Seattle laundry and provides rapid return on investment

    A wastewater treatment system was installed in July of 1998 at Hospital Central Services, a major laundry facility in Seattle, Washington. The system, manufactured by New Logic International of Emeryville, CA, will be used for wastewater treatment and water recycling at this facility. The VSEP (Vibratory Shear Enhanced Processing) system uses an ultrafiltration membrane module and is able to ...


    By New Logic Research, Inc.

  • Application of a risk management framework to a drinking water supply augmented by stormwater recharge

    The Blue Lake is an important water resource for the city of Mount Gambier and the surrounding region, primarily as the drinking water supply source, but also as a tourist attraction. Mount Gambier’s stormwater is discharged directly via drainage wells into the unconfined, karstic Gambier Limestone aquifer, which in turn provides the majority of recharge to Blue Lake. Discharge of urban runoff to ...


    By IWA Publishing

  • Pt. Lisas, Trinidad Receives 2 State-Of-The-Art Glass-Fused-To-Steel Water Storage Tanks as Part of Nation’s First Water Recycling Project for Water

    Florida-Aquastore, an authorized CST dealer serving the water storage and wastewater market across the state of Florida, the Caribbean, and Central and South America, has completed construction on two glass-fused-to-steel tanks at Point Lisas in Trinidad – the twin island country off the northern edge of South America.  The tanks were part of a $167,000,000 USD upgrade to the Beetham ...


    By CST Industries Inc

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