Screw Presses Articles

  • 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

  • Intensified ribbon blending of melamine compounds cuts cycle times 25% for furniture molder

    Melsur Corporation, the world's leading supplier of hard plastic melamine school furniture, molds components from a mixture of resin, wood flour and pigments. Each of the 32 color variations, 30 products and custom designs must be blended individually, a process that can take up to four hours, depending on product. Anything less than empirically defined cycle times alters the final color and ...

  • Glass blended rapidly with abrasion resistant rotary mixer

    While most reading this article may be unfamiliar with the Kopp Glass name, most are likely familiar with Kopp Glass products. From a humble beginning more than 80 years ago, as a manufacturer of red glass for railroad signals, Kopp now claims to be the world's leading producer of precision molded industrial quality technical glass.  The company is known worldwide among the ...

  • Large volumes compressed into small volumes saves costs case study

    Vöhringer GmbH with its 120 staff and ultramodern machine park in Trochtelfingen each day processes up to 40,000 m2 of sheeting. This is mainly used for manufacturing specialist furniture parts up to complete furniture sets – especially for caravans and mobile homes but also for exhibition stand construction, for doors and the furniture industry. Chippings and dust accumulating during ...


    By WEIMA

  • Vivianite Heat Exchanger removal trial case study

    On the vivianite-laden heat exchangers, the maintenance supervisor created a recirculation circuit and diluted JS 9325 to a fifty percent (50%) solution. They recirculated the diluted solution for 48 hours while raising the temperature of the solution to 110F. Upon opening the first heat exchanger, they observed a purple solution following by a half-inch (½”) sheet of vivianite ...


    By Struvite Removal

  • Black river cheese case study

    Description A Wastewater Treatment solution was implemented at the Black River Cheese Company in Milford, Ontario to deal with their wash water. This Case Study explains the problem and innovative solution that was implemented.   Customer Profile The historic Black River Cheese Company (“BRC”) is located in picturesque Prince ...

  • Struvite Removal & Vivianite Removal Case Study- Heat Exchanger and Screw Press

    A regional wastewater treatment plant in Sonoma County was experiencing problems with struvite on their screw presses and vivianite on their heat exchangers.The plant maintenance staff was forced to shut down the dewatering process every three (3) weeks to clean because of struvite deposits on the screen of the screw press. They also noticed that they were having a difficult time maintaining ...


    By Struvite Removal

  • Geotube Container Keeps Pulp & Paper Mill Running - SCA Tissue Paper, Cherokee, Alabama - Case Study

    TenCate develops and produces materials that function to increase performance, reduce costs, and deliver measurable results by working with our customers to provide advanced solutions. THE CHALLENGE SCA Tissue's Cherokee Alabama, USA, waste water treatment system has minimal sludge storage, about six hours, with all sludge going directly to a dewatering table, followed by a ...

  • Roll-press briquetting helps Iowa lime producer retain previously wasted fines as valuable product case study

    Adding a new 550 tpd rotary kiln more than doubled lime production capacity at Linwood Mining and Minerals Corporation's Buffalo Plant, located near Davenport, IA...but it also raised the problem of what to do with a greatly increased output of fines. Realizing that landfilling its plant property with waste fines at rates of up to 100 tpd would not be a good long-term solution, the company not ...


    By K.R. Komarek Inc

  • Wyeth case study

    Paddle Dryer turns waste into income for food processing plant. A northeast food processor turns its activated biological sludge waste from its manufacturing process into income by recycling the waste as an ingredient for organic fertilizer. When the state banned landfilling of the biological waste, a study was conducted that showed the waste contained enough nutrients to be ...


    By Komline-Sanderson

  • Separating paint leftovers from buckets

    By separating paint from the buckets and compress the emballage, the waste handling company saves money on both transport and disposal. VEGLO MILJØSERVICE AS collects and processes hazardous waste from companies over a wide geographic area in central Norway, including cans and buckets of paint leftovers, around 300 tons p.a. which have to be emptied and compacted. For this ...


    By RUNI A/S

  • Separating paint leftovers from buckets

    By separating paint from the buckets and compress the emballage, the waste handling company saves money on both transport and disposal. VEGLO MILJØSERVICE AS collects and processes hazardous waste from companies over a wide geographic area in central Norway, including cans and buckets of paint leftovers, around 300 tons p.a. which have to be emptied and compacted. For this ...


    By RUNI A/S

  • You can dewater your cake and pump it too! Conveyance options for OCSD Plant 1

    OCSD is currently upgrading Reclamation Plant 1 to co-thicken primary and waste activated solids using centrifuges. Digested solids will also be dewatered using centrifuges and the two processes will be housed in the same building. A small building footprint, stringent redundancy requirements, and a 200 foot distance between the dewatering and storage facilities requires innovative engineering ...

  • Economical: Two-Stage Grinding of Valuable Plastic Waste

    Until now large cutting mills with high drive performances have been used for the single-stage crushing of large and heavy pipes, bulk plastic products etc. This leads to high investment volume, high sound emissions, frequent blade changes, high energy and personnel costs, among other things. On the other hand, two-stage crushing enables plastic processing companies to economically process ...


  • Size-reduction of thermoplastics reinforced by long and continuous filaments

    Material utilization of thermoplastics reinforced by long and continuous filaments to produce high-value, long-filament reinforced extrusion components requires a gentle size-reduction of the materials to be utilized into lumps of grinding stock in order to achieve a large as possible filament length. The properties of the components to be produced out of this grinding stock are determined by the ...


  • How a Simple Bench-Scale Test Greatly Improved the Primary Treatment Performance of Fine Mesh Sieves

    In Norway fine mesh sieves are frequently used for primary treatment or as the only treatment before wastewater is discharged to coastal waters. The reasons for this are the intensive product development of fine mesh sieves taking place in Norway, and the significantly reduced investment costs and space requirements compared to other primary treatment processes. Historically the design of these ...

  • Bioremediation of Effluent the Pulp and Paper Industry

    The treatment of industrial effluent from the paper manufacturing facilities in British Columbia is a major concern because the effluent is discharged into prime salmon habitat in the marine environment (Cross, 1994). High levels of biological oxygen demand (BOD) in the effluent reduce the dissolved oxygen (DO) available to species in the marine environment. In 1988, the Federal Department of ...


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