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 ...

  • The Importance of Dewatering

    With spring comes two things: the onset of construction season for most of our country and rain- lots and lots of rain. The unpredictability of storms and the amount of rainfall is all a guessing game.  Jobsites flood, work stalls and projects get delayed. Rain makes it hard to keep dry and on-schedule. What’s the solution? Dewatering is a technique used to control ...


    By Pac-Van, Inc.

  • Oil Recycling - Case Study

    The problem: Waste oil recycling contributes very much to climate protection through (CO2) energy saving. Compared to the production of base oil the re-refining of waste oil uses 34 % less resources. In the sixties the German government was subsidising the re-refining of waste oil. Because of that the use of waste oil as a fuel was neglected. The used oil re-refining is the ...


    By Dirk European Holdings LTD

  • Aluminum recycling at Centro Rottami, Italy - Case Study

    Aluminum recycling is particularly important for the Italian economy, which has historically been lacking in raw materials – The showcase of Centro Rottami. Aluminum recycling is particularly important for the Italian economy, which has historically been lacking in raw materials. In fact, as much as 90% of the aluminum produced in the country comes from recycling, and is identical to ...


    By TOMRA Sorting GmbH.

  • Packaged Polymer Injection Dewatering System - Case Studies

    Case Study Number 1 Industry: Oil & Gas, Mining and Civil Waste Management Application: Treatment of Waste Drilling Fluids for Recycling Location: Brisbane, Australia Configuration: 20’ Explosion Proof HMI Dewatering System with VFD Driven EE-1448HD Centrifuge. Objective: Wastewater Treatment Sludge Dewatering in Order to Facilitate Landfill ...


    By Elgin Separation Solutions

  • Scrubber Removes Grease and Particulates from Air Exhaust

    Operating Issue A food-industry leader in Alabama operates several pork-sausage cookers that exhaust over 4,000 ACFM of moisture and pork grease. The operator installed Electrostatic Precipitators (ESPs) to treat the exhaust but these systems performed poorly and generated high maintenance and operating costs. Additionally, these systems were antiquated and required significant capital ...


    By Pollution Systems

  • Reverse Osmosis and Nanofiltration Membrane Filtration Systems: Common Problems and How to Fix Them

    Reverse osmosis (RO) and nanofiltration (NF) are membrane filtration technologies that are designed to remove solute ions and molecules from a pretreated liquid stream. Well-designed RO/NF units are compact and demand relatively little maintenance, making them an attractive alternative to conventional treatment trains. Even despite the merits of today’s efficient RO/NF technologies, it pays ...


    By SAMCO Technologies, Inc.

  • 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 ...


  • 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

  • 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 ...

  • 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

  • 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, ...


  • 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

  • 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

  • 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 ...


    By RESEM Group

  • 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.

  • 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.

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