85 Articles found
Cambi Group AS Articles
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Combined experiences of thermal hydrolysis and anaerobic digestion – latest thinking on thermal hydrolysis of secondary sludge only for optimum dewatering and digestion.
ABSTRACT The basic principles of batch thermal hydrolysis process (THP) are well known as a pre-treatment to anaerobic digestion (AD) . Early work done in the 70s in the USA and the 80s in Japan demonstrated the optimum time and temperature for ...
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Combined Experiences of Thermal Hydrolysis and Anaerobic Digestion
Historical Perspective of Thermal Hydrolysis First experiments in US 1976 – Haug et al Thermal pre-treatment prior to anaerobic digestion may result in net energy production from the system because of increased biodegradability and reduced ...
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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 ...
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Termisk hydrolyse af slam præsenteret af Jens Munck, CAMBI as SLAM 2000
Termisk konditionering af slam har været kendt og anvendt siden 1930 med det formål at opnå en øget afvandelighed og hygiejnisering. Et hindring for en større udbredelse var imidlertid de lugtgener, som opstod på de etablerede anlæg. I 90`erne blev ...
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Cambi-processen ger flexibel slambehandling
Den i Norge utvecklade Cambi-processen ger möjligheter att tillfredsställa morgondagens krav på flexibel slambehandling. Mängden slam minskar. Energiförbrukningen är lägre än vid konventionell rötning, och det bildas mera gas. Det hygieniserade ...
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Termisk hydrolyse af bioslam og efterfølgende anaerob behandling Med det formål at reducere slammængden og samtidig udnytte slammets energiindhold optimalt
Baggrund I mange år har det været almen praksis, at slam fra kommunale renseanlæg blev spredt på landbrugsarealer for udnyttelse af gødnings- og humusindhold. I 1997 udgjorde den samlede mængde slam fra de kommunale renseanlæg 140.000 t TS/år ...
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Cambi thermal hydrolysis - getting the bugs out of digestion and dewatering
Summary This paper reviews the research some of the work done over the last twenty years on the thermal pre-treatment of sludge and particularly activated sludge. It is demonstrated that the optimum time temperature for thermal pre-treatment is ...
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Anaerobic digestion and thermal hydrolysis to reduce production of sludge in WWTPs
Abstract Mesophilic and thermophilic digestion of primary and activated sludge was investigated in lab scale reactors. Mixed primary and activated sludge was digested in one experiment and activated sludge was digested alone in another. The same ...
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Cambi – the digester `turbo charger`
ABSTRACT A new patented process design has re-invented thermal hydrolysis in sludge treatment. The first plant from Cambi for hydrolysis of sewage sludge was built in 1995 at the HIAS WwTP, Hamar, Norway for a design capacity of 3500 Mg DS/year. ...
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Enhanced stabilisation of sewage sludge through thermal hydrolysis – three years of experience with full scale plant
ABSTRACT The first full-scale plant for sludge disintegration through Cambi thermal hydrolysis was started up in Hamar, Norway at the end of 1995. It is the first plant with a new design where sludge is directly heated by live steam. During the ...
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International applications of the Cambi thermal hydrolysis for sludge and biowaste treatment
ABSTRACT The sludge disposal in Europe is affected by international trends and legislation as well as national and local situations. Some important trends are: Safe utilization of nutrients Safe utilization of energy Disinfection especially by ...
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Sludge disintegration with thermal hydrolysis – cases from Norway, Denmark, and United Kingdom
ABSTRACT Sludge disposal in Europe is affected by international trends and legislation, national and local situations, and of course economics. Some important trends are: Safe utilization of organic material and nutrients in the agriculture ...
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Thermo dynamical assessment of the digestion process
ABSTRACT Digestion of sludge was mostly seen as a stabilisation process prior to disposal or land application. During the last years there is an increased interest to use biogas as alternative energy source to replace the use of fossile fuels and ...
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An operating tale from næstved sewage treatment plant
Conversion from a two-stage to a one -stage plant Næstved Central Sewage Treatment Plant was built as a Bio DeNiPho plant to treat 89,000 PE and the load is about 45,000 PE. The results of analyses of the micro pollutants indicated already in 1998 ...
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Five years` experience with the Cambi process at HIAS
Introduction HIAS is an inter-municipal water treatment company owned by 4 municipal authorities in the Hamar region on the eastern side of Norway`s largest lake, Lake Mjøsa. Lake Mjøsa is both a source of drinking water and a recipient of ...
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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). ...
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High dry solids digestion
ABSTRACTDigestion of sewage sludge normally takes place at pH values between 7,0 and 7,5. Control methods of the process stability are based on practical experience such as the ratio of volatile fatty acids (VFA) and total alkalinity (TA). Thermal ...
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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 ...
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Operating experience of Aberdeen CAMBI thermal hydrolysis plant 2002
Introduction This paper reviews the establishment of a new 50 dry tonne per day biosolids processing facility at a green field site at Nigg Bay, Aberdeen Scotland. Prior to 2001 all sewage had been pumped by long sea outfall into the North Sea. ...
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Thick sludge digestion - research design and validation of key process unit operations
ABSTRACTAdvances in the design of anaerobic digesters have seen a trend towards digestion of thicker sludges in the US, UK and elsewhere. This includes a number of new facilities using bolt on technologies to mesophilic anaerobic digestion such as ...