ash treatment system Articles

  • Plasma gasification and vitrification of ash – conversion of ash into glass-like products and syngas

    The Plasma Gasification and Vitrification of Ash (PGVA) system is a patented process that uses energy generated by plasma arcs along with the controlled addition of small amounts of air and steam to convert the organic portion of ash into a synthesis gas (gasification) and the inorganic portion into a glassy rock (vitrification). The vitrification of the ash’s inorganic portion ...


    By PyroGenesis Canada Inc.

  • Dewatering of Boiler Ash - Case Study

    Ten Gate develops and produces materials that function to increase performance, reduce costs, and deliver measurable results by working with our customers to provide advanced solutions. THE PROJECT The Wheelabrator Technology Group provides design/build and operation of trash-to-energy facilities. The Wheelabrator facility located in Lisbon, CT utilizes a storage tank for ...

  • Fly Ash Treatment – Plasma Torches versus Graphite Electrodes

    Background Plasma generating devices have to be designed to tolerate incredibly harsh conditions during operation and in particular very high heat loads and temperatures around the arc. However, when used in the vitrification of highly chlorinated materials the challenge is even greater than in other applications. The combination of high ...

  • Electro-coagulation treatment efficiency of graphite, iron and aluminum electrodes using alum and wood ash electrolytes on a Kraft pulp and paper mill effluent

    Specific power consumption and reduction of BOD, COD, TS, pH, and chemical elements were used to determine the treatment efficiency of Fe, graphite and Al electrodes with alum and wood ash as supporting electrolytes on the effluent from a Kraft pulp and paper mill in Kenya. Five sampling points were selected along mill's effluent treatment system: primary settling tank (SP1), first aerated lagoon ...


    By IWA Publishing

  • Arsenic waste from water treatment systems: characteristics, treatments and its disposal

    As with other water treatment systems, arsenic treatment creates not only quality water but arsenic waste as well. Management of arsenic waste is now becoming a major public concern due to its harmful effects on the surrounding environment, including serious health problems such as skin cancers and various internal carcinomas. The main aim of this paper is to review: (i) the characteristics of ...


    By IWA Publishing

  • The development and application of centrifugal flotation systems in wastewater treatment

    Flotation as a wastewater treatment technique is designed to remove all particles generally encountered as very fine emulsions, suspended solids, and colloids from wastewater. Historically, Dissolved Air Flotation (DAF) has been used to achieve this removal. More recently, other flotation techniques such as induced air, electro, cavitational, and Centrifugal Flotation Systems (CFS) have been ...


    By Inderscience Publishers

  • Modular treatment system neutralizes process water

    A self-contained pH control and monitoring sys- tem for ready mixed operations yields clean water for recycling or permitted discharge to the environment. Fortrans' Model 5000S uses car- bon dioxide gas to neutralize high-pH process water, offering precise alkalinity monitoring and control of water in pits, settling basins and other containment areas, as it lowers total suspended solids. Designed ...


    By Fortrans, Inc.

  • Thermal Treatment Technologies

    Hot gas decontamination: Hot gas decontamination is a technology still in the pilot-scale of development that can be used for decontamination of explosives-contaminated masonry or metallic structures. The method involves sealing and insulating the structures, heating with hot gas stream to 260 °C (500 °F) for a prescribed period of time, volatilizing the explosive contaminants, and destroying ...

  • Wastewater Treatment & Recycle

    Fresh water is a scarce commodity; this fact is well acknowledged by one and all. People at all levels be it general public, governmental bodies, and industries understand the implications of good quality water availability in terms of quantity, cost and wastage. As a consequence, there is a growing consensus on wastewater treatment for recycle/reuse. This paper briefly describes the treatment ...

  • Treatment of Arsenic Contaminated Industrial Wastewaters

    Arsenic in industrial wastewater effluents is attracting greater regulatory attention. Depending on factors such as total maximum daily loads (TMDLs), the National Pollutant Discharge Elimination System (NPDES) discharge permit levels for arsenic may even be less than the drinking water standard of 10 µg/L. One of the industries affected by stringent arsenic discharge limits is coal-fired power ...

  • Domestic wastewater treatment with CEPT-wetlands process

    This study aimed to develop an effective process with less construction and operation cost and with flexibility of meeting different temperature requirements, namely CEPT-construted wetland processes. To reduce the chemical cost for the CEPT process, fly ash was firstly utilised to develop an efficient compound coagulant. The lab-scale experimental results showed that with low Fly Ash Coagulant ...


    By Inderscience Publishers

  • AVA Technology for Hazardous Waste Treatment - Case Study

    AVA has developed systems for pre-treating hazardous waste prior to incineration, which leads to higher throughput performance in combination with lower construction and maintenance costs and additional low pollution emissions, in comparison to conventional techniques. The system is based on the principal that constant gross calorific values and regular piece sizes together with consistency of ...


    By AVA - Huep GmbH u. Co. KG

  • ENEL power, italy – fusina project – ZLD plant for FGD wastewater treatment

    The Facility The Fusina Power Plant is equipped with four coal-fired units with a total capacity of 975 MW capacity (1 x 165 MW + 1 x 170 MW + 2 x 320 MW). The Environmental Refurbishment (Flue Gas Desulpharization, (FGD)) project includes a new DeSOx system for common for units #1 & 2; two DeNOx systems, one each for unit #1 & 2. Units #3 & 4 are already equipped with DeSOx ...

  • ENEL power, italy – sulcis project – ZLD plant for FGD wastewater treatment

    The Facility The Sulcis Power Plant is equipped with 1 x 345 MW fluidized bed boiler and 1 x 240 MW conventional boiler. This coal-fired power plant is located in Sardinia Island and has a total of 585 Mwe capacity. The units normally fire imported coal with < 1% Sulphur. The flue gases are treated sequentially by SCR-DeNOx with ammonia as the reagent. This is followed by a high ...

  • Enel power, italy – brindisi project – ZLD plant for FGD wastewater treatment

    The Facility The Brindisi Sud Power Plant is equipped with four coalfired units each of 660 Mwe capacities. These units normally fire imported coal with < 1% Sulphur. The flue gases are treated sequentially by SCR-DeNOx with ammonia as reagent, High efficiency ESP to remove fly ash and wet limestone gypsum forced oxidation DeSOx. Each unit is equipped with a 2 x 50% DeSOx lines each ...

  • Cold weather ammonia reduction in municipal/industrial treatment plant case study

    Problem During cold weather this municipal wastewater treatment plant with a high percentage of industrial flow from food processing and electronics manufacturing suffered from high ammonia loadings. As temperatures dropped the plant lost nitrification. The objective of this full-scale product application program was to reestablish ammonia oxidation and reduce ammonia-nitrogen in the lagoon ...


    By Bioscience, Inc.

  • ENEL power, italy – torrevaldaliga project – ZLD plant for FGD wastewater treatment

    The Facility The Torrevaldaliga Nord Power Plant is being converted (torn down and rebuilt) to three coalfired units each of 660 Mwe capacity. The plant is equipped with fabric filters for flue gas dust removal, DeNOx system (for flue gas denitrification), FGD systems for sulphur oxides removal. The FGD system is equipped with a common wet limestone milling, three limestonegypsum forced ...

  • Mitsubishi corporation - Spent Potliner (SPL) hazardous waste treatment case study

    The Challenge Spent Potliner (SPL) is generated in the primary production of aluminium and worldwide is estimated to rise at a rate of over 500,000 tonnes per year. The SPL waste contains concentrations of cyanide and fluoride and gives off noxious and flammable gases when in contact with moisture. Unless carefully handled, these contaminants readily "leach" into the surrounding soils and ...

  • Common Cooling Tower Water Treatment Problems and How to Solve Them

    For companies using cooling towers to remove heat from an industrial process or for cooling large buildings, there are several issues that can surface during the cooling tower water treatment process that we see on a regular basis. Because these issues occur often, it’s important to know what to look out for in advance, perhaps saving you some time and resources down the line. ...


    By SAMCO Technologies, Inc.

  • Numerical simulation and field test study of desulfurization wastewater evaporation treatment through flue gas

    Aimed at cost saving and pollution reduction, a novel desulfurization wastewater evaporation treatment system (DWETS) for handling wet flue gas desulfurization (WFGD) wastewater of a coal-fired power plant was studied. The system's advantages include simple process, and less investment and space. The feasibility of this system has been proven and the appropriate position and number of ...


    By IWA Publishing

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