Contaminated Sediment Articles

  • Organic Acid Fermentation Broth Clarification

    Although batch processes are currently used, a number of more advanced techniques have been investigated in order to improve the process efficiency. Promising every result must have been achieved using the tangential flow filtration in the continuous organic acid fermentation. One of ...


    By Jiangsu Jiuwu Hi-tech Co

  • SS Membrane Module

    The ceramic membrane module is designed by different application. Stainless steel could be used as the material of ss membrane housing. JIUWU company could produce the extra large housing as customer demand, such as loading over 91 pcs membranes.  OVER VIEW OF STAINLESS STEEL MODULE ...


    By Jiangsu Jiuwu Hi-tech Co

  • How do you clean up 375,000 m3 of contaminated river sediment every year? - Case Study

    Boskalis Environmental, Lower Fox River, USA, environmental remediation Did you know: Our membrane filter presses helped remediate more than 13 miles of contaminated riverbed in the Lower Fox River in Wisconsin, with each filter press capable of producing 18 tons of filter cake every hour.  Environmental ...

  • Degreasing Liquid Treatment

    Degreasing is a necessary step before any other processing in mechanical industry, in the steel industry and generally speaking in the transformation of raw materials.  Degreasing is performed with aid of an aqueous solution containing detergents. The detergents emulsify oil present on the material to be treated; for this reason, oil concentration tends to increase in  ...


    By Jiangsu Jiuwu Hi-tech Co

  • Organic Acid Fermentation Broth Clarification

    Although batch processes are currently used, a number of more advanced techniques have been investigated in order to improve the process efficiency. Promising every result must have been achieved using the tangential flow filtration in the continuous fermentation systems. One of the main advantages of tangential flow filtration is that the higher biomass concentrations are possible because cells ...


    By Jiangsu Jiuwu Hi-tech Co

  • PVC Geomembrane Liner for Waste Containment in Wuhan - Case Study

    PVC geomembrane liner is a kind of impermeable liner, which is widely used in the modern municipal solid waste containment system. PVC is an abbreviation for Poly Vinyl Chloride. They are installed in the side and bottom liners to inhibit flow of leachates and thus prevent the contamination of groundwater. Manufactured by the calendaring or extrusion process, BPM PVC geomembrane has high puncture ...

  • D-Series decanter for sludge dewatering at RHV STEYR, Austria - Case Study

    Innovative energy efficiency technologies RHV STEYR, a community environmental association serving the city of STEYR (Austria) and several neighboring villages, enlarged and modernized its sewage treatment facility to cope with the ever increasing requirements of more stringent legislation in the face of rising effluent levels and thus, increasing amounts of sludge. The ...

  • Membrane filter presses at Lower Fox River, USA - Case Study

    Sustainable remediation Environmental remediation is always an ambitious task. And the case of the Lower Fox River remediation project in Wisconsin is no exception. To reduce risk to both human health and the environment, the project aims to remediate PCB-impacted sediments from a 21.4-km stretch of river through dredging, capping, sand separation, sediment dewatering, water treatment, ...

  • Latest Sanitary Butterfly Valves Characteristics

    Operating pressure, operating temperature and diameter are some of the most important specifications to consider when considering sanitary valves. The diameter is usually measured through the inlet or outlet ...


    By Adamant Valves

  • What is a Sanitary Sample Valve?

    As its name suggests, this type of valve is used in processing industries for sampling various products in different states of matter such as liquid and gas. The different types of fluids are examined using various techniques using sampling valves. Some of the main ...


    By Adamant Valves

  • Sanitary Valve Installation

    1. Control valve seal design. The single seat valve can reach less than 1 drop per hour of leakage. The double seat valve is difficult to seal. Therefore, switching to a single seat valve must be an optional choice. 2. Large amounts of high pressure fluid trapped between the shut-off valves may present considerable force and ...


    By Adamant Valves

  • Synthesis of zeolites with different chemical and textural properties for metal ions removal from aqueous solutions

    In this study β-zeolite, ferrierite and partially delaminated PREFER (precursor of ferrierite) zeolites with several chemical and textural properties were synthesized for the removal of zinc and lead ion metals from their respective solutions. Adsorption experiments involving the suspension of tiny amounts of these solids in aqueous solutions containing either Zn2+ or Pb2+ showed that ...


    By IWA Publishing

  • Enhanced bacterial quorum aggregation on a zeolite capping layer for sustainable inhibition of ammonium release from contaminated sediment

    The main objective of this study was to investigate how signal molecules enhance bacterial quorum aggregation on a zeolite capping layer for sustainable inhibition of ammonium release from contaminated sediment. Sediment remediation experiments were carried out by using nitrifying bacteria (WGX10, WGX18), denitrifying bacteria (HF3, HF7) and two kinds of signal molecules (OHHL, C8-HSL). The ...


    By IWA Publishing

  • Characteristics, distribution and sources of polychlorinated biphenyls (PCBs) in coastal sediments from the heavily industrialized area of Asalouyeh, Iran

    In this research, the levels of polychlorinated biphenyls (PCBs) were investigated in the marine sediments of Asaluyeh harbor, in the Persian Gulf. The samples were taken from industrial, semi-industrial and urban regions. The mean concentration levels of total (Σ) 18 detected PCBs were 514.32, 144.67 and 31.6 pg/g dw for the industrial, semi-industrial and urban sampling stations, ...


    By IWA Publishing

  • Bredel 65 pumps eliminates AODD pump issues at major lithium battery plant

    Bredel 65 hose pumps from Watson-Marlow Fluid Technology Group are now providing constant efficiency in ball-milling processes at a high-volume battery plant in China. Previously, ball milling was being compromised by a poorly performing AODD (air-operated double diaphragm) pump used for high-viscosity slurry recirculation. Reduced flow/efficiency and leaks were proving disruptive ...

  • In-Situ Treatment - Funnel & Gate System - Case Study

    Problem An asphalt testing facility, in operation for many years, closed in the early 1990s. A subsequent environmental assessment revealed that an underground storage tank, used to hold common cleaning/degreasing solvent for use during testing, had developed a leak and had to be abandoned. The storage tank and soil in the immediate vicinity was removed as the first step to remediate ...


    By C3 Environmental Limited

  • 4 Types of Contaminants in Water

    The EPA says that there are 4 type of water contaminants: physical, chemical, radiological, and biological. Its definition includes anything that is not an actual water molecule. That means that naturally occurring things like sediment and water weeds are considered contaminants along with things like oil and uranium. Chances are good that the type of contaminants your company needs to keep out ...

  • BAIONI supply complete dewatering centrifuge system for APS Ltd

    Situated near Slough, in Berkshire, Aggregate Processing Solutions (APS) is operating a washing plant where Baioni has recently supplied a centrifuge system to complement the whole existing plant. Baioni has boosted the capacity of its decanter centrifuges range to pave the way for further improvements in waste ...


    By Baioni Crushing Plants Spa

  • Great Lakes restoration is under threat. Here’s why that matters

    Degraded by decades of pollution, the North American Great Lakes are finding new life through cleanup efforts now threatened by proposed federal budget cuts. The St. Louis River, which flows into Lake Superior — the greatest of North America’s Great Lakes — has a long and turbulent history. Once a portal for Native American trade and a garden for wild ...


    By Ensia

  • Application of PAC and flocculants for improving settling of solid particles in oilfield wastewater with high salinity and Ca2+

    The suspended solids in wastewater from Rekabak oilfield, Kazakhstan, were characterized and treated with flocculants to enhance settling. The wastewater contained a high concentration of total dissolved solids and calcium ion. Scanning electron microscopy and energy dispersive X-ray analyses showed that suspended solids were mainly composed of corrosion products (iron oxides) and silicon ...


    By IWA Publishing

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