thermal hydrolysis Articles
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Thermal hydrolysis of the lipid and protein fractions of wastewater sludge: implications for digester performance and operational considerations
ABSTRACT Thermal hydrolytic pretreatment of wastewater sludge followed by mesophilic anaerobic digestion poses significant benefits in terms of sludge minimization and pathogen reduction; however, high levels of volatile fatty acids (VFA) in digester effluent reveal an interruption in the efficient conversion of organic material to methane gas. Residual soluble chemical oxygen demand (COD) not ...
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Thermal hydrolysis of waste activated sludge at Hengelo Wastewater Treatment Plant, The Netherlands
The thermal hydrolysis process (THP) is a sludge treatment technique which affects anaerobic biodegradability, viscosity and dewaterability of waste activated sludge (WAS). In 2011 a THP-pilot plant was operated, connected to laboratory-scale digesters, at the water board Regge en Dinkel and in cooperation with Cambi A.S. and MWH Global. Thermal hydrolysis of WAS resulted in a 62% ...
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Optimization of municipal sludge and grease co-digestion using disintegration technologies
Many drivers tend to foster the development of renewable energy production in wastewater treatment plants as many expectations rely upon energy recovery from sewage sludge, for example through biogas use. This paper is focused on the assessment of grease waste (GW) as an adequate substrate for co-digestion with municipal sludge, as it has a methane potential of 479–710 LCH4/kg VS, as well as the ...
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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 ...
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Scottish Water - Edinburgh - Seafield - Case Study
Client: Scottish Water Solution: CambiTHP - B6 Seafield On 2 October 2013, MWH Treatment awarded Cambi a contract for the installation of two lines of Cambi’s modular THP B6 system, at Stirling Water’s Seafield Waste Water Treatment Works, Edinburgh, Scotland. Each line is capable of treating 50 dry tonnes of sewage sludge per day. The choice of THP system was made using a ...
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Thermal hydrolysis as pretreatment of digestion feed
AbstractA large number of different processes are today on the market for treatment of biodegradable waste. The two principal biological treatment methods available are aerobe treatment (composting) and anaerobe treatment (digestion/fermentation). In Norway so far, aerobe treatment has been the most popular solution. Both windrow composting and tunnel composting systems are in use. The first ...
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Athens - Psyttalia - Case Study
Client: EYDAP Solution: CambiTHP - B6 Psyttalia The wastewater treatment plant of Psyttalia, is the final recipient of domestic sewage and pre-treated industrial wastewater of the greater Athens area in Greece, receiving an average wastewater flow of 730.000 m³/d, with a biological treatment capacity of 3,500,000 Equivalent Population. In order to improve the energy footprint of the ...
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Sludge treatment in Germany more than 50 years of experience current discussions – future prospects
Abstract In Germany, nowadays, more than 97% of inhabitants and industry are connected to modern wastewater and sludge treatment systems. Long-term experience exists in Ger-many especially with sludge digestion. These experiences will be presented and a spe-cial focus will be on technologies for sludge pre-treatment such as e.g. thermal hydrolysis or technical solutions to recycle the nutrients ...
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Thames Water - Chertsey - Case Study
Client: Thames Water Solution: CambiTHP - B12 Chertsey The Cambi THP plant at Chertsey, just west of London, England, was built in 1998 and is owned by Thames Water. It is designed to treat 8,000 tonnes of dry solids annually, which is produced at Chertsey, Leatherhead, Esher and other wastewater treatment plants. By introducing thermal hydrolysis, the existing digesters at Chertsey have ...
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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 ...
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Simulation of thermal hydrolysis at the blue plains AWT: a new toolkit developed for full-plant process design
ABSTRACT Model simulations can support design and cost calculations for both anaerobic digestion and sidestream treatment in order to evaluate the implementation of innovative thermal hydrolysis technologies in the context of the entire plant. SBR based influent characterization, sludge production calibration, and bench-scale digestion experiments of TH-treated sludge from Blue Plains WWTP have ...
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Advanced anaerobic processes to enhance waste activated sludge stabilization
The requirement for enhanced stabilization processes to obtain a more stable, pathogen-free sludge for agricultural use is an increasing challenge to comply with in the waste hierarchy. With this in mind, the Routes European project (‘Novel processing routes for effective sewage sludge management’) is addressed to assess innovative solutions with the aim of maximizing sludge ...
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New processes for the improvement of sludge digestion and sludge dewatering
INTRODUCTIONThe examination of numerous sewage sludges from municipal wastewater treatment plants leads to the conclusion that on the one hand dewaterability of these sludges worsens and that on the other hand dewaterability of sludges becomes more and more important due to increasing disposal costs. Especially wastewater treatment plants with inflows from the food processing industry often face ...
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Grease waste and sewage sludge co-digestion enhancement by thermal hydrolysis: batch and fed-batch assays
Grease waste (GW) is an adequate substrate for sewage sludge co-digestion since, coming from a waste water treatment plant, it has a high methane potential (489 NmLCH4/gVSin); however, no synergistic effect takes place when co-digesting with 52%VS grease. Conversely, thermal hydrolysis (TH) improves the anaerobic digestion of GW (43% higher kinetics) and biological sludge ...
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Hias IKS - Hamar - Case Study
Client: Hias IKS Solution: CambiTHP HIAS, Hamar The HIAS wastewater treatment plant serves the city of Hamar and several smaller villages in the area around. It is dimensioned for a population equivalent of 90,000. In 1995 Cambi built its first full-scale thermal hydrolysis installation at HIAS as part of a new sludge treatment process including hydrolysis, digestion and dewatering. It has ...
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Neptune project deliverable D4.3
Decision support guideline based on LCA and cost efficiency assesment The environmental sustainability assessments described in this report is based on life cycle assessments (LCA) of selected waste water treatment technology (WWTT) cases included in NEPTUNE. The basic approach in these assessments (avoided against induced impacts) is described in Deliverable 4.1 (Larsen et al. 2007) and other ...
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Manchester - Davyhulme - Case Study
Client: United Utilities Solution: CambiTHP - B12 Davyhulme One of UK's largest wastewater treatment works (WwTW) is set to become a valuable source of renewable energy. The benefits of a major upgrade at Davyhulme WwTW in Manchester include the generation of up to 10 megawatts of electricity, 24 hours per day, from biogas In addition the plant will process biosolids that can be applied to ...
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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 ...
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Food waste – global warming potentials of the options
Food waste (FW) is a problem and an opportunity. This paper will review the alternativen routes for its management. In the UK, the majority of FW is still landfilled. Traditionally, FW has been fed to pigs but part of the reaction to the 2001 outbreak of foot and mouth disease in the UK was to ban this “swill feeding” and introduce stringent requirements for treating FW that later was the basis ...
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Commissioning and re-design of a ”class a” thermal hydrolysis facility for pre-treatment of primary and secondary sludge prior to anaerobic digestion
ABSTRACT Thermal hydrolysis of sewage sludge as a pretreatment technique for producing a “Class A” sludge, with existing (or new) mesophilic anaerobic digestion systems are presently being considered for wastewater treatment plants in the USA and Canada. In Europe, a number of innovative hydrolysis systems have been installed or are planned. One technology sold under the trade name CAMBITM has ...
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