batch sludge drying Articles

  • Carbonization of johkasou sludge using batch-type equipment

    The carbonization of dehydrated johkasou sludge was examined using batch-type equipment. Based on the temperature changes in the carbonization room and the gas combustion room, the carbonization process was divided into three phases: phase I, drying the sludge, phase II, thermal decomposition of the dried sludge, phase III, after phase II. The times required for phases I and II were strongly ...


    By Springer

  • Sludge reduction by direct addition of chlorine dioxide into a sequencing batch reactor under operational mode of repeatedly alternating aeration/non-aeration

    The effect of direct addition of chlorine dioxide (ClO2) into a repeatedly alternating aeration/non-aeration sequencing batch reactor (SBR) on its sludge reduction and process performance was investigated. The experimental results showed that the sludge reduction efficiency was 32.9% and the observed growth yield (Yobs) of SBR was 0.11 kg VSS (volatile suspended solids) /kg COD (chemical ...


    By IWA Publishing

  • Environmental assessment of different dewatering and drying methods on the basis of life cycle assessment

    Sewage sludge is an inevitable product of wastewater treatment in municipal wastewater plants and its amount has increased dramatically due to the growing number of sewage systems users. This sludge needs to be adequately treated in order to decrease its hazardous properties and any negative influence on the environment. In this paper, gate to gate analysis, on the basis of life cycle assessment ...


    By IWA Publishing

  • Prediction of Strutive Formation Potential in EBPR Digested Sludges

    ABSTRACTLow operating costs and less sludge generation associated with EBPR (Enhanced Biological Phosphorus Removal) have led existing wastewater treatment plants to retrofit their phosphorus removal systems and have encouraged new plants to incorporate EBPR into their design. However, in plants that use anaerobic digestion, the introduction of EBPR may result in the formation of scales of the ...

  • Souderton looks at viability of investment in sludge dryer

    Despite the day's snowy weather, the Souderton Borough Council met for a brief session March 2 and discussed the newest option for the borough's sludge removal. The borough has been looking for a device to dewater the sludge produced by the in-town treatment facility for nearly two years. Removing the water would allow the borough to apply the sludge to land, which would save on hauling costs. ...


    By Therma-Flite Inc.

  • Sludge reduction at low ozone doses: predictive effects and full-scale study

    The activated sludge process is the most widely used wastewater treatment. The main drawback of this technology is the excess sludge production (ESP). The ozonation of sludge of the recirculation line is used to reduce the ESP. In this study, ozonation was applied on a fraction of sludge of the recirculation line in a full-scale plant (50,000 population equivalent) at a lower–specific ...


    By IWA Publishing

  • Effect of ozonation on activated sludge from pulp and paper industry

    Aerobic biological treatment with activated sludge is the predominant process all over the world for treatment of pulp and paper industry wastewater. 50–70% of the biodegradable organic material is oxidized to CO2 and the rest is converted to bacterial biomass, typically termed as excess sludge or waste activated sludge (WAS). Handling and disposal of WAS in general and in particular from the ...


    By IWA Publishing

  • New technology for sludge management reduces waste to landfill by 80%

    The first batch of results from a new sludge management and waste reduction system at Severn Trent's Coleshill Sewage Treatment Works in Birmingham, England show a consistent 80% reduction in waste to landfill volumes. The DMax system has specifically been developed by CDE Ireland Ltd to process a variety of wastes as detailed below. This list is not exhaustive and represents the material for ...


    By CDEnviro

  • Improving nutrient fixation and dry matter content of an ammonium-rich anaerobic digestion effluent by struvite formation and clay adsorption

    The anaerobic digestion (AD) of organic wastes that contain nitrogen leads to its mineralization, yielding a digestate rich in ammonium (NH4+), an important fertilizing nutrient. The applicability of AD digestate as fertilizer can be improved by fixating the nutrients and increasing its dry matter content. Methods for the fixation and recovery of the digestate's ...


    By IWA Publishing

  • Waste Water Treatment Plant sees Economic and Environmental Return on Investment with Biosolids Drying System from Therma-Flite

    Therma-Flite, a resource recovery technology company, releases a new case study that provides municipalities with a look at how one mid-sized city has achieved its goals of eliminating transportation and landfill costs associated with biosolid waste disposal. Regulatory, economic and environmental pressures prompted the plant operations leader to seek equipment and systems that could transform ...


    By Therma-Flite Inc.

  • Polyhydroxyalkanoate (PHA) production potential of activated sludge from food industrial wastewater treatment process

    Polyhydroxyalkanoate (PHA) production by activated sludge treating food industrial wastewaters was evaluated. Influence of wastewater characteristics on PHA production activities of non–acclimatised and acclimatised sludge were determined. Acetate, glucose and butyrate were used for evaluating PHA production potential of sludge at different concentrations of 400, 800 and 1,200 mgC/l during 12 ...


    By Inderscience Publishers

  • Remediation of refinery waste, oil sludge from lagoons and contaminated soils - case study

    The first VacuDry plant installed at a refinery is designed to treat waste which has accumulated over the last decades, as well as waste that will be generated inside the refinery in the future. The semi-mobile system has a capacity of 1.5 to 2 tons per hour. The plant is designed for maximum flexibility and can treat different types of refinery wastes ranging from dry soil to wet centrifuge ...


    By econ industries GmbH

  • Maximising biogas in anaerobic digestion by using engine waste heat for thermal hydrolysis pre-treatment of sludge

    EXECUTIVE SUMMARY Dublin's Ringsend WWTP was designed to serve a population of approximately 1.2 million pe with a sludge production of 37,000 dry tonnes per year after upgrading to full secondary treatment. Several technical solutions were put forward as part of a Design, Build, Finance and Operate (DBFO) competition, with the chosen solution being a proposal by Black and Veatch for a ...


    By Cambi AS

  • Paint

    Problem: A paint manufacturer, that produces both oil and water based paints, needed help to solve their liquid sludge problem. At that time the wastewater was batch treated and consisted of a chemical addition process followed by settling. This was to be changed in the near future to a continuous type treatment system. The settled sludge consistency varied form 5% to 10%. The ...


    By HydroCal Inc.

  • Integrated Anaerobic and Aerobic Processes for Treatment of Municipal Wastewater

    ABSTRACTIn this study, integrated anaerobic and aerobic treatment processes for municipal wastewater treatment were investigated for its feasibility to replace the existing conventional activated sludge process. Three types of anaerobic systems − anaerobic sludge blanket, anaerobic sequencing batch reactor and anaerobic filter, as the pretreatment step were studies. High solids and organics ...

  • Processing technology for radioactive wastes

    For 20 years now, AVA has been delivering innovative mixers, dryers, and systems for environmental and processing technologies. The treatment of highly contaminated materials has always been one of our core competencies. For more than 10 years, AVA Technology has been applied for the processing of radioactive wastes. The application of AVA mixers and reactors may be divided into two main ...


    By AVA - Huep GmbH u. Co. KG

  • AVA – The expert for ash and dust conditioning - case study

    For an environment free of dust Application Ashes and dust from the filters of incineration, de-dusting and drying plants are lyed, moistened or solidified. The result is a disposable final product, a transportable property or re-usable value products e.g.: Dust from power plants for the use in road construction and building material industry ...


    By AVA - Huep GmbH u. Co. KG

  • Blending microbes demands gentle touch

    Environmental-restoration product manufacturer requires fast, uniform, gentle blending of powdered microbes, enzymes and nutrients The microbial formulations that United-Tech, Inc. produces are used to break down or detoxify a broad array of complex, often-toxic organic compounds, greasy spills and other contaminants in a variety of ...

  • SBR Wastewater Treatment Provides Large Clean-up on Small Site

    One of the largest capacity wastewater treatment plants in Europe is under construction on a small plot of land at Ringsend, on Dublin Bay in Ireland. Sequencing batch reactor (SBR) technology and 100,000 diffusers from ITT Industries' Sanitarie unit was selected to meet the challenging waste treatment needs for this site. When Dublin's wastewater treatment plant was built in the 1970s, it ...


  • Reduction and control of total Nitrogen in a cheese factory case study

    Treatment system enhancement using Microcat - DEN Denitrifiers - BSE 099 Problem The wastewater treatment system receiving wastewater from a cheese factory in the EU has difficulty meeting total nitrogen effluent discharge requirements. The wastewater flow rate is 2000 cubic meters per day. The treatment system consists of two sequencing batch reactors (SBRs) ...


    By Bioscience, Inc.

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