static screening system Articles

  • The design of static mixer heat transfer equipment for adhesives, sealants, resins and polymers.

    The fluids handled within the adhesives and sealant industries are amongst the most difficult to handle of any in the main process industries globally. The characteristics which make them particularly difficult to handle include: High viscosities (typically 1-2000 Pa.s, or 1000 to 2 million cP). Often non-Newtonian (viscosity is not constant and varies with shear rate). Some ...


    By National Oilwell Varco

  • Selection of food combinations to optimize survival, growth, and reproduction of the amphipod Hyalella azteca in static‐renewal, water‐only laboratory exposures

    While standardized sediment toxicity testing methods have been developed for the amphipod Hyalella azteca, no standardized chronic water‐only toxicity testing methods have been established. Furthermore, optimal feeding and water quality conditions for culturing and toxicity testing with this species remained unclear. Our objective was to determine the food or combination of foods that best ...


    By John Wiley & Sons, Ltd.

  • Practical Applications of Static Low Density Media Filters for Use in the Treatment of Domestic Wastewater

    ABSTRACTIn the treatment of domestic wastewater, both biological and physical contaminant removal mechanisms must occur to facilitate compliance with NPDES permit discharge requirements. Static low density media (SLDM) filters can be used to perform both of these duties allowing for the consolidation of various unit operations into one component. Previous studies have shown that both organic and ...

  • Multilevel Systems

    Untitled Document Introduction A multilevel system is a groundwater monitoring device which allows ...


    By Solinst Canada Ltd.

  • Bio-Stabilization of MSW in Argentina - Case Study

    Largest Landfill in South America uses the Covered Aerated Static Pile (CASP) composting system to Bio-Stabilize 400 tons/day of Mix Solid Waste (MSW) derived from the landfill sparation facility. 2500 tons of un-separated MSW arrives daily from the City of Buenos Aries and the surronding area (population 12 million). Roughly 65 percent of the incoming waste is organic and can be diverted from ...

  • Avoidance of contaminated sediments by an amphipod (Melita plumulosa), a harpacticoid copepod (Nitocra spinipes), and a snail (Phallomedusa solida)

    The distribution of contaminants is seldom homogeneous in aquatic systems. In the present study, the avoidance response of Melita plumulosa, Nitocra spinipes, and Phallomedusa solida when exposed to contaminated sediments was investigated. Test vessels were designed to allow the congruent placement of two sediments and assessment of the movement of organisms between the sediments. When exposed to ...


    By John Wiley & Sons, Ltd.

  • Calculating capacity at composting sites

    The addition of new composting facilities or expansion of capacity at existing ones is becoming more and more difficult as feasible sites are taken out of circulation. This has created interest in maximizing the unit production of compost at composting sites so that they perform as efficiently as possible. The need is especially acute if physical expansion is not possible, but increases in ...


    By BioCycle Magazine

  • Element Inspection Criteria for Couplings

    Baldor-Dodge Raptor’s easy to assemble, patent-pending split rubber element significantly decreases total cost of ownership and extends driven equipment life. Designed for drop-in interchangeability, the Raptor offers easy installation and reduced maintenance in an innovative design. When it is time to inspect or maintenance the coupling, it is important to know what to look for so elements ...


    By Modern Pumping Today

  • Odor issues at Mariposa MSW composting facility

    The Mariposa County MSW composting facility was built at the county landfill to remove some dry recyclables from the waste stream and to produce compost for daily cover. One key motivation was to increase the lifespan of the landfill and to postpone a costly long-haul. The facility was permitted, designed and built by a team of engineers and vendors. It began operation in the summer of 2006. ECS ...


    By Engineered Compost Systems

  • State Fish Hatcheries and Invasive Species Don’t Mix

    INTRODUCTION The Vermont Fish and Wildlife Department is responsible for the protection and management of the state’s fish populations. Cultured fish are stocked in natural and manmade areas that are excellent for growth and survival but have little or no spawning habitat. Other stocking areas include natural water bodies where spawning and nursery habitats have been destroyed or isolated from ...

  • Controlling Dust and Bioaerosols at a Biosolids Composting Faclity

    Studies at enclosed Longmont, Colorado project evaluate exposure level of employees. Operational changes reduce dust, endotoxin and A. Fumigatus by 90 percent. WHEN dealing with public health issues and composting, attention has been predominantly focused on potential exposure from the release of Aspergillus fumigatus (A. fumigatus) from composting facilities. Numerous studies were conducted to ...


  • How to certify aero engines

    Aircraft Engine Noise Certification PowerJet, formed as a joint venture between Russian OAO NPO Saturn & French SNECMA (SAFRAN Group), have designed and built the new SaM146 turbofan engine selected by the Sukhoi Civil Aircraft Company to power its Superjet 100 aircraft family. The Sukhoi Superjet 100 is a medium-haul airliner developed in collaboration with Alenia Aeronautica (Italy), and ...

  • Mixed waste composting trends

    It's been about 25 years since vendors started marketing systems to process mixed municipal solid waste via composting in the U.S. Today, there are 13 plants, most fulfilling their niche in the communities they serve - whether managing MSW in high tourism areas, or processing residual organics from materials recovery facilities. Table 1 provides summary data on the 13 facilities. While we did not ...


    By BioCycle Magazine

  • Adding AD To Existing Composting Site Footprint

    About an hour’s drive west of Munich in southern Germany, the City of Augsburg had been served by an indoor composting facility since 1994. It was operated by Abfallverwertung Augsburg (AVA), three quarters of which was initially owned by the City of Augsburg and the districts of Aichach-Friedberg and Augsburg. Until recently, the remaining quarter was owned by a private company but as of ...


    By BioCycle Magazine

  • Operator Strategies : Sorting Out the Plastic

    BETTER BUGS Ideas and products in the Better Bugs category attempt to affect the biological components and biochemistry of processes by altering the mix of microorganisms or enzymes present. After all, biology is the foundation of many, if not most, organics recycling systems. Pyrophiles: The first example of Better Bugs involves pyrophilic organisms, bugs that can take the heat. This example is ...


    By BioCycle Magazine

  • Mixed MSW composting is steady as she goes

    Two new facilities came on line in 2006, while one ceased operation and a second is shifting to a new technology. Annual survey identifies a total of 14 plants. Part I STEADY-STATE may be the best phrase to describe the status of facilities composting mixed municipal solid waste in the United States. In fact, steady-state may be the best phrase to describe solid waste composting in general since ...


    By BioCycle Magazine

  • Processing Wastewater Sludge Using Dewatering Containers

    The relative cost of dewatering equipment varies widely and is directly related to the processing rate. For smaller utilities that need to dewater sludge in batches, dewatering containers are an alternative that can be relatively inexpensive and simple when compared to other technologies on the market. The most common type of dewatering container is based on a roll-off box design, although any ...


    By Flo Trend® Systems, Inc.

  • Smart Series-Odor Management

    Tackling odors at composting facilities is a manageable task made simpler by inventorying and treating all sources and tapping into technology advances. Perhaps one of the most difficult realities that had to be faced 15 to 20 years ago by the composting universe is that the phrase, “odor-free” - at least when it comes to composting - is probably an oxymoron. Feedstocks that biodegrade within the ...


    By BioCycle Magazine

  • Mariposa compost facility odor remediation update

    Staring in the winter of 2006 the staff at the Mariposa Compost Facility worked quickly to make process changes to bring odor issues under control. Here is the latest chapter in their story. Odor (incident) Logs In January 2007 the Local Environmental Agency (LEA) provided "odor logs" to the county residents that were troubled by the compost facility's odors. The odor logs were ...


    By Engineered Compost Systems

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