lime mixing Articles

  • Impact of Lime Dose and Mixing Quality on Odor Generation by Lime-Stabilized Biosolids

    ABSTRACTOdor generated from lime-stabilized biosolids with various lime doses and mixing regimes was studied during two bench scale experiments over four weeks of storage to determine the correlation between the lime stabilization process and odor strength. For the first bench scale experiment, dewatered solids were mixed with various lime doses (4.5% and 11.7% by wet weight) under various mixing ...

  • Application of a flat surface ph electrode to demonstrate the effect of lime addition point relocation on mixing quality and ph decay of lime stabilized biosolids

     ABSTRACT Uniform lime incorporation into sewage sludge is critical for biosolids lime stabilization processes. There is no Class B biosolids regulation for lime incorporation. The slurry method is currently used to evaluate the pH of limed biosolids, but this method homogenizes the biosolids and potentially masks poor lime mixing. In this study, a flat surface pH electrode was used in ...

  • Cement and Lime Kilns case study

    Cement and Lime Kilns PROCESS DESCRIPTION Cement, lime and gypsum manufacturing processes have in common the mixing of inorganic minerals calcined at high temperatures typically using rotary kilns (vertical kilns are also used). CEMENT Regular Portland cements are the usual products for general concrete construction. The raw ...

  • Energy from waste: the recycling of limed fleshings

    Leather products have been around a long while - there are those who claim that it is the second oldest business in the world. Going back a few millennia, when our earliest ancestors decided that sitting on hard rock was not a soft option, they turned to other materials in order to create more comfortable seating, as well as warmer bedding and improved clothing. Animal skins became the fabric ...


    By Flottweg SE

  • Continuously mixing one batch at a time

    Ready-mix company improves mixing efficiency and ingredient accuracy by switching to a rotary batch mixer. When a concrete and ready-mix producer moved to a new plant, the mixing process was redesigned to include batching for greater control over the final product 's ingredients. Rich-Mix Products makes concrete and ready-mix products and packages them for sale in home ...

  • Performance of a conventional surface water plant using mixed-oxidants for microflocculation and final disinfection

    The City of Santa Fe, NM utilizes both surface water and well water to achieve a system-wide peak production of 22 million gallons per day (MGD). In March 1998, the city incorporated MIOX mixedoxidant disinfection technology for pre-treatment and final disinfection of the water treated in an 8 MGD surface water plant. Concurrently, a filter backwash recycling system was installed as well as ...


    By MIOX Corporation

  • Treatment of Sugar Carbonatation Sludge for Reuse and Flue Gas Desulphurisation

    In this work sugar refinery carbonatation sludge is treated in a pilot scale facility for two purposes: reuse in the carbonatation process, mixed with fresh calcium hydroxide, and flue gas desulphurisation. The sludge is first dried, and then calcinated in a batch kiln with a capacity of 100 kg, designed for the purpose. This process is potentially attractive for the sugar industry, since it can ...


  • Incinerator Residue for Roads

    A study was conducted by the authors to assess the feasibility of using incinerator residue in road construction. Residues from Singapore incinerators were characterized. Various combinations of mixes comprising local clayey-silty-sandy soil and incinerator residue with or without lime were tested for their suitability for use as road subbase/subgrade. Also, bituminous mixes comprising varying ...


    By ASTM International

  • Recommendations for Grasspave2

    For passenger vehicles & light trucks, 8” minimum base, for utility truck and fire lanes, 10” minimum base. (Base depth thinner than this must be approved by site engineer.) Recommended base: Sandy Gravel material from local sources commonly used for road base construction, passing the following sieve analysis. Base material consisting of lime rock should be mixed with ...


    By Invisible Structures, Inc.

  • Case Study: Truck Wash

    This facility washes out the internal tanks of tanker trucks. Generating 10,000 gallons/day of wastewater consisting of the residual liquid within the tanks combined with soaps, acids, and caustic cleaning products. The wastewater flowed into a central sump and was pumped into one of their two 5000 gallon Reaction Tanks. The operator then added Ferric Chloride (40 gallons), sulfuric acid (10 ...


    By Integrated Engineers Inc.

  • Bioremediation applied to high pH contaminated soil washing slurry

    BioFuture Ltd. in conjunction with General Smontaggi SpA have used applied environmental engineering and bioaugmentation to remediate hydrocarbon contaminated soil washing slurry. The soil washing slurry had been treated using lime to dry and stabilise it for transport to special landfill for disposal. The starting pH was 12.55 and it was successfully bioremediated so that it could be used as a ...


    By Biofuture Ltd

  • Industrial Laundry-2

    This facility washes shop towels, uniforms, and floor mats from a variety of industrial clients. The wastewater has heavy metals, hydrocarbons, and oil/greases. The staff has heavily modified the treatment system with mixing tanks and longer detention time for the chemicals to work. The treatment consisted of lime addition, calcium Chloride, an aluminum based coagulant, and an anionic flocculant. ...


    By Integrated Engineers Inc.

  • Pathogen Inactivation by a Closed Alakaline System

    ABSTRACTThe efficiency of advanced alkaline disinfection in closed systems has been demonstrated to depend on the balance of ammonia concentration, pH, exposure time, temperature, total solids content, post-treatment storage time and mixing effectiveness. When the alkaline system is a closed one, an additional pathogen stressor is added: pressure. The effect of the alkaline dosing has been ...

  • Latex Paint Mfg Treatability

    A Treatability test was conducted on August 10, 2006. This company was looking for an alternative to their current Ferric Sulfate, Lime, and DE chemical process for treating their wastewater. Our one, nonhazardous product, Floccin 1107, worked best for their particular application vs. the traditional treatment chemistry mentioned above. The initial pH of the wastewater was between 6.8 and 7.0. ...


    By Integrated Engineers Inc.

  • Construction materials production. Application of the ABC-100 unit

    Expanded clay industry In the process of expanded clay production the argillous raw material homogenizes and mills in the drilling mud mixers and rollers. But these equipments not ensure qualitative desintegration. As result we obtain the expanded clay of low quality. Insufficiently desintegration and homogenizing of raw materials lead to the result when even 3% of carbonate ...


    By GlobeCore GmbH

  • Dallas water utilities - Case Study

    Integrity Municipal Systems Restores Eight Lime Slakers for the Bachman Water Treatment Plant in Dallas, TX: Almost $1M Saved Compared to New Systems Dallas Water Utilities (DWU) provides approximately one billion gallons per day of clean drinking water to more than 1.2 million residents from three processing facilities. Reliability is vital to DWU and its customers. To ensure ...


    By Integrity Municipal Systems

  • Reducing Odor and VOC Emissions

    The Montgomery County Regional Composting Facility (MCRCF) in Silver Spring, Maryland is designed to process 400 wet tons/day of lime amended biosolids from the Blue Plains Wastewater Treatment Plant (WWTP) in Washington, D.C. Recently, political pressures forced operations to cease at the MCRCF. Although the aerated static pile composting plant’s fate has not been completely decided, its owner, ...


    By BioCycle Magazine

  • Optimising the Rehabilitation of polluted Mine Tailings and Water by SupaZorb

    To date the polluted acid mine drainage (AMD) – the second biggest environmental problem of the world - from South Africa’s gold mines, was characterised and treated by the precipitation of heavy metals with lime and sulphates, by means of iron exchange. The chemical treatment with expensive and toxic caustic soda (Sodium Hydroxide, NaOH) is to lift the pH, in order to reduce the corrosion on ...


    By SupaZOrb

  • Improvement of the Caenorhabditis elegans growth and reproduction test to assess the ecotoxicity of soils and complex matrices

    A growth and reproduction test using the nematode Caenorhabditis elegans was recently standardized by the International Organization for Standardization. Performing the ISO 10872 protocol (2010) revealed some drawbacks when applied to soil or soil mixed with complex matrices. We propose some modifications to the current protocol in order to normalize the test conditions. An appropriate range ...


    By John Wiley & Sons, Ltd.

  • Common Treatment Technologies for Radionuclides in Ground Water, Surface Water, and Leachate

    It may be necessary to know other subsurface information to remediate radionuclides in ground water, surface water, and leachate. Treatability studies are usually necessary to ensure that the contaminated ground water can be treated effectively at the design flow. A subsurface geologic characterization would be particularly important to characterize the effects of adsorption and other processes ...

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