alkaline waste stream Articles

  • Closed-loop alkaline recycling proves an award winning application

    A Closed-loop chemical recycling system not only improved product quality and lowered costs for a company-it won their team of engineers an award. The six engineers of the "Stain Team," headed by Tim Keiper of Instrument Specialties Company Inc (Delaware Water Gap, Pa), earned the company's Continuous Improvement Pioneer Award after reworking their cleaning operation to include an AquaChemical TM ...

  • A chance to drive hazardous waste policy

    The proliferation of energy-from-waste (EfW) power plants is making a significant contribution to the UK’s efforts to end its reliance on harmful fossil fuels. But while EfW plants provide a solution to municipal waste, they also produce a low amount of hazardous waste in the form of air pollution control residue (APCr). Despite numerous solutions existing that process and reuse APCr ...

  • Field Pilot Study of a Chemical Oxidation Process for Treatment of Industrial Waste Leachate

    Remediation efforts are ongoing at the Avtex Fibers Superfund Site in Front Royal, Virginia. As part of the future remediation of several surface impoundments used for viscose waste disposal during plant operation, it may be necessary to extract contaminated leachate and groundwater for ex-situ treatment and discharge to the Shenandoah River. This waste stream contains varying concentrations of ...

  • Chemicals used for pH Adjustment

    The Chemistry of Limestone Treatment: Limestone is an alkaline agent with the ability to neutralize, or partially neutralize strong acids. The neutralization process occurs when strong acids, in intimate contact with limestone chips, react with Calcium Carbonate (CaCO3, the primary constituent of limestone) to form water, carbon dioxide and calcium salts. The following depicts the neutralization ...


    By Digital Analysis Corp.

  • Komax teflon lined mixer simplifies acid injection for power plant

    A major source of waste water in many power plants is the waste stream that results from ion exchange used for demineralizing the boiler feed water. The alkaline regeneration waste stream produced by the ion exchange process requires the addition of an acid to this stream before discharge from the plant. Regulatory authorities typically require the effluent to have a near neutral pH before ...


    By Komax Systems, Inc.

  • Optimization of metallurgical processes

    Untitled Document Existing metallurgical operations can be optimized by implementing engineered bioreactor systems in the process ...


    By Paques B.V.

  • Treatment of industrial wastewater

    All industries produce some type of waste product, either from production, maintanance or both. These hazardous and non-hazardous wastes need to be properly stored, treated and discharged to a sewer system or otherwise disposed of. Wastewater treatment is a multi-stage process to renew wastewater before it is discharged to the municipal sewer system. The goal is tio reduce or remove organic ...


    By Newterra

  • Loading of an Anaerobic Packed Bed for Treatment of a High Strength Gray Water

    ABSTRACTIn preparation of long-duration manned space flight, biological treatment systems have been evaluated for mission specific waste streams consisting of a high-strength gray water. The purpose of the work was to determine the appropriateness of using nitrification and denitrification to treat the urine-humidity condensate waste stream and to determine the optimal loading rate for the bench ...

  • Chemical cleaning is cost-effective, efficient

    Chemical cleaning is an important offering within Clean Harbors’ portfolio of industrial cleaning/maintenance services for refineries, petrochemical processors and other process manufacturers. Along with high-pressure cleaning, pigging, Tech Sonic sound wave cleaning and other technologies, chemical leaning is a safe, efficient and cost-effective way to remove corrosion, deposits, residual ...


    By Clean Harbors

  • On-site Neutralization of Laboratory Wastewater: Northern Territory University

     The Northern Territory University’s Faculty of Science have designed and installed a ‘Neutralization Pit’ as their ‘cleaner production initiative. The primary objectives of the Northern Territory University adopting this form of treatment for the chemical wastewater generated by the Faculty of Science was to: Prevent pollution and eutrophication of the receiving Darwin watercourses as ...


  • Thermal hydrolysis pre-treatment for high solids anaerobic digestion

    The City and County of San Francisco completed a two-year pilot study of pre-treatment processes to mesophilic anaerobic digestion for improved biosolids stabilization and production of biosolids suitable for unrestricted reuse (class A biosolids). The results of this effort will help in the design of the new Solids Handling Facility (SHF) at the 11 m3/s Southeast Water Pollution Control Plant ...


    By Cambi AS

  • Using Nanofiltration in Beverage Production

    The following article is based on a paper presented in August, 1990 at the 21st Annual Meeting of the Fine Particle Society in San Diego. Soft drink manufacturers, not to mention manufacturers of other beverage products, have always had a keen interest in the water that goes into their products. After all, it is the water that typically makes up 80%-90% of the product. In the past the water has ...

  • Development and Application of Biological H2S Scrubbers for Treatment of Digester Gas

    ABSTRACTAs part of the California Energy Group (Former California Energy Commission) Public Interest Energy Research (PIER) Program, biological hydrogen sulfide (H2S) biogas cleaning was evaluated. The biological H2S scrubber uses bacteria to oxidize the sulfide to produce both elementary sulfur and sulfuric acid. This system was tested at the Inland Empire Utilities Agency’s Regional Plant 1 ...

  • Pyrolysis

    Introduction: Pyrolysis is formally defined as chemical decomposition induced in organic materials by heat in the absence of oxygen. In practice, it is not possible to achieve a completely oxygen-free atmosphere; actual pyrolytic systems are operated with less than stoichiometric quantities of oxygen. Because some oxygen will be present in any pyrolytic system, nominal oxidation will occur. If ...

  • Tanning and Leather Finishing Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Time to address the air pollution control residue problem

    The incineration of municipal solid waste is gaining increasing importance in the UK, especially as the burning of waste can be used to generate energy, providing a more sustainable solution to our waste problem by diverting it from landfill sites. An issue with incineration is that some of our waste contains hazardous chemicals such as chlorine and lead which are volatilised during the process. ...

  • Electroplating Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Cleaner Production Demonstration Project at Bonlac Foods, Stanhope

    Table of Contents Executive Summary 1. Review of Bonlac Operations 2. Planning and Organisation of the Bonlac Foods ...


  • Adapter bacteria control oil spill in bulk

    Introduction Microbac was called in to advise on a required treatment for an integrated bulk oil handling facility and sea-land terminal, receiving, storing and shipping a wide variety of liquid fuels, inorganic chemicals and petrochemicals, many of which are toxic to microorganisms. The variable and complex waste streams from tank truck cleaning, ballast and tank cleaning discharges from ...


    By Microbac Ltd

  • Wastewater-Primary Treatment

    Primary Treatment is defined as a wastewater treatment process that takes place in a rectangular or circular tank and allows those substances in wastewater that readily settle or float to be separated from the water being treated. This process achieves solids separation. The solids readily available to settle to achieve sedimentation will do so in a settling tank referred as a clarifier. On the ...

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