anaerobic treatment Articles
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Anaerobic procedures (fermentation)
Anaerobic technology is particularly well suited for the utilisation of organic industrial refuse with a high water content as well as for the organic part of bio-waste. A crucial factor for the increasing acceptance of anaerobic waste treatment is the fact that - in contrast to composting - the energy (digested gas) which is released during fermentation can be collected and used and enables ...
By ORBIT e.V.
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Presence and survival of fungi and clostridium Tyrobutyricum during anaerobic treatment of organic household waste
Today the anaerobic microbial process of biogas formation is more into focus than ever. This interest is due to the fact that is offers the community means of fulfilling several obligations: treatment of organic wastes, recirculation of nutrients between urban and rural areas and production of renewable energy. Presently, several Swedish cities have built centralised biogas plants, treating ...
By ORBIT e.V.
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Evaluation of a sequential aerobic?anaerobic treatment of municipal solid waste in a bioreactor landfill
A sequential aerobic-anaerobic bioreactor landfill was operated and monitored over a period of 184 days. The bioreactor was filled with 120 kg of organic fraction of Municipal Solid Waste. Leachate recirculation was applied. The results showed rapid degradation of organic matter with rapid settlement during the aerobic period. The initial COD and BOD5 were reduced from 46,500 and 41,500 mg/L to ...
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Using submersible fluorescence sensors to track the removal of organic matter in decentralized wastewater treatment systems (DEWATS) in real time
Decentralized wastewater treatment systems (DEWATS) using anaerobic treatment are increasingly being considered for wastewater treatment with options for non-potable water reuse at the community scale. One challenge for ensuring performance and reliability of DEWATS is the lack of suitable on-site sensors to monitor failure or contamination events. In this study, the aim was to use in situ ...
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Performance study for anaerobic digestion of municipal solid waste in a single phase reactor
Anaerobic Digestion (AD) has been up to now essentially applied to wastewater. However, anaerobic treatment of organic solid waste fits well with the new requirements for waste management. A batch study of vegetable market waste composed at various solid concentrations was studied in a single phase anaerobic reactor. Prior to this, studies were also carried out in aspirator bottles of different ...
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Separating micropollutants from biowastes using anaerobic treatment facilities
Recycling of municipal organic wastes from separate collection systems becomes more and more important in the Federal Republic of Germany. Experiences gathered during the last few years indicate that the recovery potential of waste and biosolids strongly depends on quality of the produced composts or their pollutant load. This means that only really low polluted composts will be competitive in ...
By ORBIT e.V.
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Anaerobic Processes as the Core Technology for Sustainable Domestic Wastewater Treatment: Consolidated Applications, New Trends, Perspectives, and Challenges
Anaerobic digesters have been responsible for the removal of large fraction of organic matter (mineralization of waste sludge) in conventional aerobic sewage treatment plants since the early years of domestic sewage treatment (DST). Attention on the anaerobic technology for improving the sustainability of sewage treatment has been paid mainly after the energy crisis in the 1970s. The successful ...
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Alternative stabilisation options of mechanically sorted organic fraction from municipal solid waste prior to landfill disposal
In order to foresee the measures of the Directive 1999/31/EC, waste management policies are focused on the reduction of organic matter landfill disposal, through the recovering of the organic waste stream or the pre-treatment of residual wastes before landfilling. This paper discusses the advantages and disadvantages of possible stabilisation treatments of the mechanically sorted organic fraction ...
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Anaerobic digestion in Sweden - status and experiences
The implementation of biogas technology has in general increased in Sweden over the last 4-5 years. The main reason for this development is the effort to replace landfilling of nutrient-rich, wet organic waste with sustainable alternatives. In accordance with the EU directive on landfilling, a tax on putting organic waste into landfills will be introduced the 1st of January 2000, together with a ...
By ORBIT e.V.
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Dynamic atmospheric chamber systems: applications to trace gas emissions from soil and plant uptake
Atmospheric emissions, transport, transformation and deposition of trace gases may be simulated through chambers. The dynamic flow-through chamber system has been developed in response to a need to measure emissions of nitrogen, sulphur and carbon compounds for a variety of field applications. Oxides of nitrogen (NO, NO2, NOY) emissions have been measured from agricultural fertilised/unfertilised ...
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Effect of microwave temperature, intensity and moisture content on solubilisation of organic fraction of municipal solid waste
High temperature and pressure microwave (MW) pre-treatment of the Organic Fraction of Municipal Solid Waste (OFMSW) enhanced solubilisation prior to Anaerobic Digestion (AD). Three temperatures (175°C, 145°C and 115°C), three MW intensities based on temperature ramp times (20, 40 and 60 minutes) and two Supplemental Water Additions (SWA) of 20% and 30% were evaluated. MW irradiation resulted in ...
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Turning whey into energy
Sweden, Umea. Olof Wallin stared at the official letter on the desk in front of him and thought hard. Under his management the dairy in Norrmejerier produced more milk products every year, cheese production too was on the rise, and now this. The public canalization could no longer handle the whey which was a waste product of the daily cheese production and disposed of with the dairy’s ...
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Carbon offsets from organic waste conversion projects
The Climate Act ion Reserve (the Reserve) has long had a protocol to give credit for the capture and destruction of methane emissions from organic waste in landfills, but they have now opened up the possibility of credits for projects that prevent that waste from entering landfills in the first place. In October 2009, the Reserve adopted the Organic Waste Digestion Project Protocol, covering both ...
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Gulkevichsky Starch Factory – Global Water & Energy partnership to create a blueprint for waste reduction in the starch industry
One of the biggest starch manufacturers in Russia, Gulkevichsky Starch Factory (KZG) doubles its corn processing capabilities and mitigates the environmental impact by installing a new wastewater treatment plant from Global Water & Energy (GWE). KZG increases its production capacity from current 120,000 tons a year and adds new quality products to its portfolio. The new wastewater treatment ...
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Adding Value With Anaerobic Digestion
Adding waste-to-energy technology to wastewater treatment produces energy that can be used to power operations Anaerobic digestion (AD) is a biological process that uses microbes to biodegrade organic matter (feedstock) in the absence of oxygen. It provides a host of benefits in the treatment of challenging wastewater streams while offering the opportunity to produce value in the process. ...
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Co-digestion of press liquids of source-sorted municipal organic waste in anaerobic sludge treatment of municipal wastewater treatment plants
This paper describes a semi-continuous laboratory-scale investigation of a potential co-substrate for mesophilic anaerobic sludge digestion in a municipal wastewater treatment plant. A feed liquid produced from source-sorted municipal organic waste by pretreatment with a screw press was subjected to the investigation. Quantities produced in press trials as well as the composition of the feed ...
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When Is It Best to Use Anaerobic Digestion?
The benefits can be compelling, but several factors must be considered Anaerobic digestion is a biological process that breaks down organic matter in the absence of oxygen, producing biogas and nutrient-rich sludge. Used in wastewater treatment, anaerobic digestion helps reduce the volume of sludge, stabilizes the solids, and produces valuable biogas. The solid matter that remains, called the ...
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Processes Optimization and Scraps Cleaning
Tiger Depack: the all in one solution for the treatment of the organic fraction. Tiger Depack has been developing technical solutions to improve waste recovery for ten years. Food waste, production waste and scraps from waste treatment processes are just a few examples of the main matrices valued by Tiger Depack packagers. Thanks to the great reliability of the machinery and the in-depth study ...
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Anaerobic digestion of Organic Fraction of Municipal Solid Waste (OFMSW) in two-phase system
In view of recovering energy resource from the treatment of Organic Fraction of Municipal Solid Waste (OFMSW), anaerobic digestion of OFMSW prior to aerobic composting as post-treatment was considered. This study aimed to determine the operational characteristics and efficiency of a two-phase system composed of a fed-batch hydrolysis reactor (phase I) and a methanogenic Upflow Anaerobic Sludge ...
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GWE rebrands in line with new landmarks in clean energy generation and profitability
A world leader in wastewater and green energy technologies that radically improve companies’ environmental sustainability while enhancing their profitability is rebranding its international activities under the banner Global Water & Energy. The Global Water Engineering organization – headed by Chairman and CEO Jean-Pierre Ombregt – is celebrating the successful completion of ...
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