biosolids thermal treatment Articles

  • Pyrobustor for the thermal treatment of biosolids

    ARA Pustertal AG operates the Tobler wastewater treatment plant in South Tyrol, Italy. The Tobler ARA facility is the fi rst and only water treatment plant in Central Europe that is housed in an underground cavern. The impressive cavern plant, whose tunnels are twice as large as that of a highway tunnel, began operation in July, 1996. The inclusion of a sludge drying plant and a thermal sludge ...


    By Eisenmann

  • 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 Group AS

  • Innovation Key To Biosolids Digestion

    A $400 million project at the Blue Plains Advanced Wastewater Treatment Plant (AWTP) in Washington, D.C., involves building an innovative biosolids management system comprised of a thermal hydrolysis process, four 3.8-million gallon mesophilic digesters (measuring 70-ft tall by 100-ft in diameter) with fixed covers, a cogeneration system consisting of three 4.6-MW Solar Mercu ry 50 gas turbines ...


    By BioCycle Magazine

  • Integration of thermal hydrolysis into sludge treatment at cottonvalley WwTW, milton keynes

    The paper is a case study of the construction, commissioning and operation of a new 21,000 tonnes dry solids per annum sludge treatment centre at Anglian Water’s wastewater treatment works at Cottonvalley, Milton Keynes. The construction of the new sludge treatment centre was completed in summer 2008 and is part of Anglian Water’s £95 million AMP5 biosolids programme to provide treatment capacity ...


    By Cambi Group AS

  • A Comparison of Fluid Bed and Multiple Hearth Biosolids Incineration

    Abstract Incineration has been used as a disposal method for wastewater treatment biosolids for over sixty years. The first multiple hearth furnace for biosolids incineration was built in 1935 in Dearborn, MI. From that time through the late sixties, the multiple hearth was the thermal technique of choice for biosolids disposal. Today there are still some 150-175 aging multiple hearths in ...

  • Trends in biosolids handling technologies: economics and environmental factors

    Changes in activated sludge technology, with a much greater focus on nutrient removal instead of removal of organics, together with relatively long sludge mean that the primary sludge stream has been lost, and the sludge produced is less degradable. At the same time with the growing importance of sustainable solutions, beneficial agricultural use is being increasingly used. This changes quality ...


    By Cambi Group AS

  • Customer Diversification is Key to Marketing of Biosolid Product for Ocean County, New Jersey

    ABSTRACT In the United States, most public wastewater treatment agencies with beneficial-use biosolids management programs utilize Class B biosolids. Many of these agencies have concerns about their Class B programs, and therefore, are examining Class A treatment processes. Within the family of Class A technologies, thermal drying is one of the fastest growing management methods. A critical ...

  • Four Different Pathways to Advanced Biosolids Stabilization Assessing Drivers and Results To-Date

    With increased public scrutiny and growing local regulatory resistance to land application of Class B biosolids, many utilities are raising questions about the continued reliance on this practice. Consequently, they have started exploring options for enhancing the performance of existing solids treatment facilities to achieve the highest level of stabilization, Class A. With composting losing ...

  • Optimizing removal of estrogenic compounds in biosolids: a comparison of anaerobic, post-aerobic, and cambi digestion

    ABSTRACT Anaerobic digestion is a key treatment step during wastewater treatment because it is often the final significant solids treatment process prior to land application. Land application of biosolids is a vital practice for sustainable waste management; therefore, the presence of estrogenic compounds in biosolids is one concern to this practice. Three digestion processes were studied to ...


    By Cambi Group AS

  • Cambi thermal hydrolysis combined with thermophilic/mesophilic digestion - from pilot to full scale application at Hamar Wwtp

    ABSTRACTDuring 2001-2003 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 pre-treatment options investigated included: A thermophilic (55 °C; TP) process with 5 days hydraulic ...


    By Cambi Group AS

  • Lab-scaled digestibility study of wastewater sludge treated by thermal hydrolysis

    ABSTRACT High-solids mesophilic anaerobic digestion (HS-MAD) processes employing thermal hydrolytic pretreatment (THP) have gained much interest in recent years; primarily because they have been shown to produce Class A biosolids in accordance with EPA 503 regulations, but also because they represent an economical approach to the maximization of available anaerobic digester volume. The ...


    By Cambi Group AS

  • DC WASA adopts thermal hydrolysis for anaerobic digestion pretreatment: conceptual design details for the largest Cambi™

    ABSTRACT The District of Columbia Water and Sewer Authority (DC WASA) has decided to incorporate thermal-hydrolysis pretreatment in conjunction with mesophillic anaerobic digestion as the backbone of a long-term biosolids treatment plan to produce Class A biosolids. The Authority has been lime stabilizing their raw solids from the Blue Plains Plant for many years, transporting them to the State ...


    By Cambi Group AS

  • Phosphorus and Heavy Metal Extraction from Wastewater Treatment Plant Sludges Using Microwaves for Generation of Exceptional Quality Biosolids

    ABSTRACTThe objective of this study was to evaluate how much phosphorus and metals in sludge can be released into solution by microwave irradiation when applied to sludge prior to anaerobic digestion, and to determine the effectiveness of subsequent lime precipitation. For thickened sludge, the fraction of phosphorus in the soluble form increased to 23%~28% while for unthickened sludge, to ...

  • Full scale experience of retrofitting thermal hydrolysis to an existing anerobic digester for the digestion of waste activated sludge

    ABSTRACT Naestved central WWTP is a 5 MGD facility that was originally designed as a Bio DeNiPho plant following primary sedimentation. In 1998 the primary tank was bypassed in order to reduce organic micro-pollutants by aerobic treatment in the aeration basins. This reduced the micro-pollutants but led to a bulky undigestible sludge and foaming due to Microthrix. The Microthrix problem was ...


    By Cambi Group AS

  • Springfield - Case Study

    At Their Disposal Komline-Sanderson minimizes solid waste disposal costs in Springfield, Mass The City of Springfield, Mass., currently uses a contract composting facility, which is located at the 65 MGD Bondi Island Wastewater Treatment Plant to dispose of their solid waste. The composting facility requires a feed of 40–45% solid materials to ...


    By Komline-Sanderson

  • Paragould AR case study

    Maximum Capacity Expected Increased population in Paragould, Ark., forces city to expand wastewater treatment plant to better manage sludge disposal Does this sound familiar? Your lagoon is filling with both primary and secondary sludge, and will be at capacity within the next two years. Paragould, Ark., a growing city of 22,500 located in northeast Arkansas, had just that ...


    By Komline-Sanderson

  • OVERVIEW OF MINERGY’S GLASSPACK® VITRIFICATION TECHNOLOGY

    Vitrification, defined as a thermal process for converting minerals into glass, is an emerging technology in the area of treating wastewater residuals. Vitrification has a well established track record in other industrial processes especially glass furnaces used in the glass manufacturing industry and slagging furnaces used in coal-fired power generation.Wastewater treatment residuals, such as ...


    By Minergy Corporation Limited

  • THyPAD – From Pilot to Full Scale Application at Hamar WWTP

    During 2001-2003 the city and county of San Francisco completed a two-year pilot study of pretreatment processes to mesophilic anaerobic digestion for improved biosolids stabilization and production of biosolids suitable for unrestricted reuse (class A biosolids). The pre-treatment options investigated included:   1. A thermophilic (55 °C; TP) process with 5 days hydraulic retention time (HRT).   ...

  • Philadelphia Recycling Center case study

    The Challenge An arm of the City of Philadelphia Water Department, the Biosolids Recycling Center (BRC) was in need of critical support. Consisting of a dewatering complex and a compost operation that utilized a portion of the dewatered biosolids (with the balance transported offsite for disposal), the BRC had an expired Title V air management operating permit and was at risk of regulatory ...


    By Synagro Technologies, Inc.

  • Advanced Dewatering & Drying System – A Performance Model

    Since the beginning of 2006, an advanced dewatering and drying system has been operating in the United Kingdom. The facility is producing greater than 40 dry metric tonnes per day of enhanced biosolids in accordance with European Union regulations. The facility is producing biosolids with pathogen levels near minimum detectable levels. This is being achieved with an energy usage less than the ...

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