sludge recycling system Articles

  • BAIONI supply complete dewatering centrifuge system for APS Ltd

    Situated near Slough, in Berkshire, Aggregate Processing Solutions (APS) is operating a washing plant where Baioni has recently supplied a centrifuge system to complement the whole existing plant. Baioni has boosted the capacity of its decanter centrifuges range to pave the way for further improvements in waste ...


    By Baioni Crushing Plants Spa

  • Multicomponent activated sludge model for reactors in series with recycling

    Multicomponent models containing both substrate and biomass have an advantage over conventional models in seeking better understanding of activated sludge systems. Such models are also useful in the characterisation of wastewater. Studies in recent years have shown that most of the soluble organic matter in the effluent of treatment systems consists of soluble microbial products that arise during ...


    By Inderscience Publishers

  • Sewage sludge management in Malaysia

    This paper describes the current status of sewage sludge management in Malaysia, including sludge characteristics from both communal sewage treatment facilities and septic tanks. The levels of potentially toxic elements in the sludge are defined and compared to levels elsewhere in the context of the suitability of the sludge for agricultural use. Current sludge disposal practices are reviewed and ...


    By Inderscience Publishers

  • A new photo-activated sludge system for nitrification by an algal-bacterial consortium in a photo-bioreactor with biomass recycle

    Wastewater treatment technologies requiring large areas may be less feasible in urbanizing regions of developing countries. Therefore, a new technology, named photo-activated sludge (PAS), was investigated to combine the advantages of regular activated sludge systems with those of algae ponds for the removal of ammonium. The PAS consisted of a mixed photo-bioreactor, continuously fed with BG-11 ...


    By IWA Publishing

  • Economic assessment of sludge handling and environmental impact of sludge treatment in a reed bed system

    The effect on the environment of the establishment and operation of a sludge treatment reed bed system (STRB) is quite limited compared to mechanical sludge dewatering, with its accompanying use of energy and chemicals. The assessment presented here of the investment, operation and maintenance costs of a typical STRB, and of the related environmental impact, is based on the experiences gained ...


    By IWA Publishing

  • Pollutants in Urban Wastewater and Sewage Sludge

    Untitled Document Executive Summary Water policy in the European Union is aiming to promote sustainable water use and a major ...

  • Evaluation of the single sludge deammonification process for the treatment of plant recycle streams containing a high ammonium concentration

     ABSTRACT An innovative biological process for the treatment of ammonium-rich plant recycle streams from the dewatering of anaerobically digested sludges (“centrate” or “rejection water”) is being evaluated in North America in an unprecedented collaborative technology evaluation program between the New York City Department of Environmental Protection, the District of Columbia Water and ...

  • Centralised treatment of oil sludge and other industrial waste

    Centralised treatment of various sources of industrial waste has been established in many European countries over the last decade. Many facilities are still equipped with non state of the art technology and therefore cannot fulfil the broad field of applications with regard to industrial waste remediation. econ's international client decided to be one step ahead and erected a new econ industries ...


    By econ industries GmbH

  • Case study - Nottinghamshire Recycling

    DUO Equipment delivered and installed a new full washing and water management plant for Nottinghamshire Recycling Ltd (NRL). Based in Worksop, Nottinghamshire, NRL is a sustainable waste solution provider processing C & D waste, green waste, wood and recycled aggregates. The new washing and water management plant (which includes a Gennaretti centrifuge system) will provide NRL with the ...


    By DUO (Europe) plc

  • Machining Coolant Recycling: Unidrive

     Unidrive Pty Ltd undertake extensive machining operations during the production of automotive components. In the past this resulted in the generation of 20,000 litres of waste coolant every week. By implementing a coolant recovery and recycling system, Unidrive have saved approximately $179,000 per annum as a result of more efficient coolant usage and management. ...


  • Glass Recycling Factory - Case Study

    Adjusting the specification according to the dewatering target. This factory recycles glass and processes them into small pieces which can be used for making glass bottles. Nevertheless, the pieces of glass need to be washed before having been shipped to another factory where the final product will be made and this cleaning water needs to be treated somehow. They had been using a belt ...


    By AMCON Inc.

  • Operational strategy, economic and environmental performance of sludge treatment reed bed systems – based on 28 years of experience

    Sludge treatment reed bed (STRB) systems have been used for dewatering and mineralisation of sludge in Europe since 1988. STRB systems provide substantial environmental, economic, and operational benefits compared to mechanical sludge dewatering solutions such as belt presses and centrifuges. They require less energy, no chemicals, reduce the sludge volume and produce bio solids with dry solid ...


    By IWA Publishing

  • A promising approach of reject water treatment using a tidal flow constructed wetland system employing alum sludge as main substrate

    This study examined a novel reuse of alum sludge, an inescapable by-product of drinking water treatment process when aluminium salt is added as a coagulant, as the main medium in a laboratory-scale multi-stage constructed wetland (CW) system for reject water treatment. Such reject water is a main concern in municipal wastewater treatment plant (MWWTP) for increasing the organic and nutrient ...


    By IWA Publishing

  • Enhanced reduction of excess sludge and nutrient removal in a pilot-scale A2O-MBR-TAD system

    In this study, a pilot scale anaerobic-anoxic-oxic (A2O) process with submerged membrane (MBR) in the oxic tank was coupled with thermophilic aerobic digestion (TAD) reactor and was operated for longer than 600 days to treat real domestic wastewater. Regardless of the varying conditions of the system, the A2O-MBR-TAD process removed MLSS, TCOD, BOD, TN, TP, and E. coli about 99%, 96%, 96%, 70%, ...


    By IWA Publishing

  • Water Jet Floor Cleaning and Effluent Recycling System: SCS Specialised Services

    SCS Specialised Services Pty Ltd has developed a method of cleaning industrial concrete floors which recycles the wash water (the Recovery Jet system). On average, this has resulted in an 85 per cent reduction in the quantity of effluent generated. Background SCS Specialised Services Pty Ltd is a small floor cleaning and protective coatings business, specialising in cleaning ...


  • Simulation Of Simultaneous Nitrification-Denitrification Using Activated Sludge Model No. 1

    The operation of biological wastewater treatment systems performing simultaneous nitrificationdenitrification (SND) was simulated using Activated Sludge Model No. 1 (ASM1). Properties and parameters typical of domestic sewage were used in the simulations. System performance was simulated under a range of conditions to identify an appropriate operating window for the process. Simulation results ...

  • Nitrogen removal from reject water with primary sludge as denitrification carbon source

    A novel system was used for nitrogen removal from reject water. This system includes one anoxic/oxic reactor for nitrification and a special reactor for denitrification in which primary sludge was added intermittently as electron donor. In denitrification reactor, sludge fermentation and denitrification reaction took place simultaneously and promoted each other. It was found that effluent recycle ...


    By IWA Publishing

  • Centralised treatment of oil sludge and other industrial waste - case study

    Centralised treatment of various sources of industrial waste has been established in many European countries over the last decade. Many facilities are still equipped with non state of the art technology and therefore cannot fulfil the broad field of applications with regard to industrial waste remediation, econ's international client decided to be one step ahead and erected a new econ industries ...


    By econ industries GmbH

  • Heat Pump Used to Drain Contaminated Sludge in a Steel Factory

    Summary In 1987, new regulations required that factories dispose of their contaminated water and waste themselves. Making galvanised steel wire, the Stelfil factory produces sludge contaminated with lead and zinc. Stelfil spent thousands of dollars to bury this waste and evaluated three systems to remove most of the water: a gas dryer, an induction heated screw conveyor and a heat pump system. ...


  • Integrated side-stream reactor for biological nutrient removal and minimization of sludge production

    Integrated processes to reduce in situ the sludge production in wastewater treatment plants are gaining attention in order to facilitate excess sludge management. In contrast to post-treatments, such as anaerobic digestion which is placed between the activated sludge system and dewatering processes, integrated technologies are placed in the sludge return line. This study evaluates the ...


    By IWA Publishing

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