waste separation Articles

  • Separation

    Introduction: Ex situ separation can be performed by many processes. Gravity separation and sieving/physical separation are two well-developed processes that have long been primary methods for treating municipal wastewaters. Magnetic separation, on the other hand, is a much newer separation process that is still being tested. Gravity Separation Gravity ...

  • Pulp & Paper Water Treatment - A look at optimizing water resource management

    Application Case Study (Pulp/Paper Operations) The pulp and paper industry has traditionally been a consumer of large amounts of fresh water and power. Recently, increased focus has been given to the optimized efficiency of paper mills and to the environmental sustainability footprint of the industry. Therefore, water resource management has become a more critical factor ...

  • The productive environmental laboratory: BSK Labs boosts efficiency with Metrohm IC

    BSK Labs runs a number of environmental laboratories and service centers along the west coast of the US. A total of 70 employees – including microbiologists, chemists, lab technicians, and support staff – make sure that the 200 to 350 samples that come in every week are analyzed. BSK Labs specializes in potable water chemistry, ground water monitoring, storm water runoff, solid waste ...


    By Metrohm AG

  • How to set up an office recycling program

    The Paperless Project states the average office worker uses 10,000 sheets of paper a year, and 45% of paper used by office workers is trash by the end of the day. CalRecycle reports that over 785,000 tons of recyclable office paper are disposed ...

  • Separation leads to savings on waste charges

    Separation and dewatering in connection with destruction of Tetra Pak cartons turned the waste dry enough for recycling. NEN-PRODUKTER AS in Norway produces juice and smoothies sold in various forms of Tetra Pak cartons. “We have to take care of thousands of units every day due to normal and unforeseen production waste. A major part of this waste contains filled ...


    By RUNI A/S

  • Electrostatic Separation of Mixed Plastics Waste

    A major environmental problem is mixed plastics waste. Because of the incompatibilities of the properties of different polymers, mixed waste is either land filled or reused in low value applications such as plastic wood. The barrier to economic re-use of these materials is separation into pure components. Recycled pure plastics can be used in place of virgin material and thereby much of the ...


  • The Power to Separate

    Gravity separators are effective and economical tools used to process wastewater and stormwater by removing pollutants such as sediment, hydrocarbons and debris through the process of sedimentation or flotation. Most separators have few or no moving parts, are easy to maintain and have a successful history of use in many different industrial, commercial and residential applications. Specifying ...


    By BaySaver Technologies, Inc.

  • Electrokinetic Separation

    Introduction The principle of electrokinetic remediation relies upon application of a low-intensity direct current through the soil between ceramic electrodes that are divided into a cathode array and an anode array. This mobilizes charged species, causing ions and water to move toward the electrodes. Metal ions, ammonium ions, and positively charged organic compounds move toward the cathode. ...

  • Recycling of plastic waste by density separation: Prospects for optimization

    A review of existing industrial processing and results of alternative processing investigations for separating solid mixtures and specifically recycling plastic waste by density separation is presented. Media density separation is shown to be fundamental for separation and/or pre-concentration in the recycling of plastics. The current use of static media processes limits the capacity and size of ...


    By SAGE Publications

  • Building waste and ballistic separator - a worthwhile matter

    Efficient sorting for sustainable recycling instead of just pure disposal. That is the motto for dealing with building waste.  What do you understand by the expression building waste? This is a collective expression for the diverse types of waste that occur on building sites. This includes mixtures of mineral and non mineral materials (e.g. stone mixed with wood, sheets of ...

  • Source separation trends in the UK

    THE past 15 years have seen significant investment and development of the biowaste collection and treatment industry in the United Kingdom (UK), which has gone from virtually zero to an industry worth over £160 million (264.6 million USD). Driving this investment have been a number of regulatory and fiscal measures such as the first set of Landfill Directive targets due in 2010. Since 1999, the ...


    By BioCycle Magazine

  • The Atritor Turbo Separator

    Due to the changes in restrictions and the increase in the cost of landfill, the Gypsum Industry is looking for an alternative to handle the estimated 300,000 tons of new build plasterboard waste generated every year. The traditional way of separating gypsum from its backing is to use hammer mills, in conjunction with sieves, which is costly and generates a lot of dust.Atritor offers reprocessing ...


    By Atritor Limited

  • A Comparison Between Systems for Source Separation of Organic Household Waste

    Conventional collection of source separated waste using separate containers was com-pared to collection in bags with different colours and optical sorting (OptiBag). Purity was found to be high, especially in the OptiBag system. However the conventional system had new instructions for sorting, which may have influenced the result. Sources for heavy metals are identified as waste metal fraction, ...


  • Oily Water Separators

    Mining Water Treatment & Water Recycling H2O Cleanawater has worked with Australia's mining companies for over 16 years providing waste water treatment and water recycling solutions for wash down, workshop and refuelling area applications. Oil Separators that are Pre-Plumbed and Pre-Wired ...


    By Cleanawater

  • Plastics Separation In Compost

    Operators say their number one contamination problem is plastic small, large and in-between - in the compost feedstock and thus in the end product. New study and equipment offer some excellent solutions. An air separation unit from Hawker Corp. is attached to the outfeed conveyor of a screen. Plastic is collected in a tube sock (inset) attached to the fan assembly. PRESSURE in Europe to increase ...

  • Towards municipal solid waste source separation at the household level in Accra, Ghana

    Municipal solid waste source separation at the household level has been endorsed as the way forward by all stakeholders in the waste management sector in Ghana. The study using waste stream analyses and laboratory investigations assesses the feasibility of this intervention in the Accra Metropolitan Area which has been divided into three income zones. The mean waste percentage composition was ...


    By Inderscience Publishers

  • Robust corona-electrostatic separation method for solid waste recycling

    The objective was to reduce variation in the outcome of a corona-electrostatic separation process for solid waste recycling by finding operating conditions (high-voltage level, roll speed, splitter position) under which uncontrollable variation in 'noise factors' (ambient humidity, metal content in the feed) has minimal impact on the quantity and the quality of the recovered products. The samples ...


    By Inderscience Publishers

  • Rest or mixed waste sorting-digestion-separation for the recovery of recyclables and energy

    Source separate collection of biowaste has been implemented in many countries in Europe, especially in the German- speaking countries and the Benelux. By separating the biowaste fraction, a waste fraction called rest waste or grey waste is left over. This fraction is in most instances landfilled or incinerated. However, rest waste still contains a considerable amount of organics (up to 65%) which ...


    By ORBIT e.V.

  • Anaerobic fermentation of organic solid wastes: volatile fatty acid production and separation

    Anaerobic fermentation of organic municipal solid waste was investigated using a leach-bed reactor (LBR) to assess the volatile fatty acid (VFA) production efficiency. The leachate recycle rate in the LBR affected the VFA composition of the leachate. A six-fold increase in the recycle rate resulted in an increase of the acetic acid fraction of leachate from 24.7 to 43.0%. The separation ...


    By IWA Publishing

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