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 ...

  • Zuser - Polaris 2800 - With Lindner, you know what you’re getting - Case Study

    Zuser Ressourcenmanagement GmbH is not keen on experiments: for the past 24 years the RDF producer in Peggau, Austria has bought shredders made by Lindner Recyclingtech. The new addition to the family is a Polaris 2800. For one-step shredding every other machine was simply out of the question. The cooperation with Lindner dates back to a time before Mag. Georg Zuser became CEO of the Zuser ...


    By Lindner-Recyclingtech GmbH

  • 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 ...


  • 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

  • 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. ...

  • 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

  • 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

  • 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

  • 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

  • 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.

  • 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, ...


  • Process for the Separation of Gas Products from Waste Tire Pyrolysis

    In recent years, pyrolysis has proven to be an effective thermochemical process for the recycling of waste tires. After pyrolysis, three fractions are obtained:  carbonaceous solids, liquid hydrocarbons, and the so-called noncondensable gases. In this paper, the starting point is the pyrolysis reactor outlet that provides a gas stream with a temperature of 600 ...


  • A Recycling Exemption for Oil/Water Separator Wastes at a Large Military Base in California

    The Health & Safety Code (HSC) in California contains provisions that can exempt a recyclable material from categorization as a hazardous waste if certain strict criteria are met. The Department of Toxic Substances Control (DTSC) is wary of 'sham' recycling and requires substantial proof of beneficial reuse for a facility to qualify for this exemption under HSC 25143.2. A large military ...


    By Coto Consulting, Inc.

  • Environmental efficiency of composting versus anaerobic digestion of separately collected, organic waste

    Environmental policy in the Netherlands among others aims at closing material cycles and minimising the amount of waste requiring final disposal. In this policy the highest priority is given to the prevention of waste production followed by (in descending order of preference) reuse, incineration with energy recovery and sanitary landfilling. In the implementation of this solid waste policy also ...


    By ORBIT e.V.

  • How waste and recycling are separated at the French Open - Case Study

    Once again, the French Open (Roland-Garros) is setting new standards in sustainability and recycling! Over the past few years, the French Tennis Federation and Roland Garros have aimed to increase awareness of recycling and ...


    By Harmony Enterprises, Inc.

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