high temperature sludge dryer Articles

  • 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. ...


  • Remediation of refinery waste, oil sludge from lagoons and contaminated soils - case study

    The first VacuDry plant installed at a refinery is designed to treat waste which has accumulated over the last decades, as well as waste that will be generated inside the refinery in the future. The semi-mobile system has a capacity of 1.5 to 2 tons per hour. The plant is designed for maximum flexibility and can treat different types of refinery wastes ranging from dry soil to wet centrifuge ...


    By econ industries GmbH

  • Removal of ecologically harmful pyrolysis gas and vapours

    Type     HOFGAS®- IFM4c/1000 Commissioning     August 2002 Site     Waste water treatment plants Situation As a result of new authority requirements, Romag AG set up operation of a plant for the drying and gasification of wastewater sludge. Drying vapours are formed during the sludge drying and pyrolysis gas during gasification. These emissions must be burned in an ecological way, ...


    By Hofstetter BV

  • Paragould AR case study

    Maximum Capacity Expected Increased population in Paragould, Ark., forces city to expand wastewater treatment plant to better manage sludge disposal Does this sound familiar? Your lagoon is filling with both primary and secondary sludge, and will be at capacity within the next two years. Paragould, Ark., a growing city of 22,500 located in northeast Arkansas, had just that problem. ...


    By Komline-Sanderson

  • Sharon

    Abstract SHARON8 is a very cost-effective treatment system for the total removal of nitrogen components, through nitriflcation/denithfication. from wastewater flow streams containing high concentrations of nitrogen. The system is used for the treatment of municipal wastewater side streams from both dewatered digested primary sludge and waste activated biosolids to achieve high total ...

  • Oil and metal recovery from mill scale and grinding swarf for the metal industry - case study

    A combination of rising prices for resources and the improvement in technology make treatment of mill scale and grinding swarf an extremely environmentally friendly and economical solution. The first VacuDry® plant for the recovery of oil solvents and metals from sludges began operating in autumn 2012. Our client is a medium-sized company operating in the field of waste recycling and ...


    By econ industries GmbH

  • Waste Water Treatment Plant sees Economic and Environmental Return on Investment with Biosolids Drying System from Therma-Flite

    Therma-Flite, a resource recovery technology company, releases a new case study that provides municipalities with a look at how one mid-sized city has achieved its goals of eliminating transportation and landfill costs associated with biosolid waste disposal. Regulatory, economic and environmental pressures prompted the plant operations leader to seek equipment and systems that could transform ...


    By Therma-Flite Inc.

  • Remediation of hydrocarbon contaminants from oil lagoons and refinery waste - case study

    In 2007 econ delivered an indirectly heated thermal desorption plant to a client in Kuwait. The plant is de-signed to treat various types of waste with hydrocarbon contaminant content. In particular refinery waste, oil lagoons and down hole drilling waste. The aim is to recover the waste hydrocarbons from the soil/sand and remediate the lagoons of their contaminants.  Due to the natural ...


    By econ industries GmbH

  • Controlling Stack Emissions in the Wood Products Industry

    Electrostatic precipitation has been a reliable technology since the early 1900's. Originally developed to abate serious smoke nuisances, the manufacturers of zinc, copper, and lead quickly found electric gas cleaning a cost efficient way to recover valuable product carried out of the stacks from furnace operations. Today electrostatic precipitators are found mainly on large power plants, cement ...


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