Full-scale biodrying process of municipal solid waste

Dębicka, Marlena; Żygadło, M.

doi:10.1051/e3sconf/20171700018

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…Most recent studies [6,16,23,24,27,31,[36][37][38][39][40][41][42][43][44][45][46][47][48] have majorly focused on biostabilization, biodrying methods, solar drying and thermal drying for the pretreatment of high organic concentration of solid wastes. Moreover, numerous studies [4, 22-24, 27-29, 31-34, 36-49] have also investigated the process, performance efficiency and economic feasibility of different drying methods for the quality improvement of solid wastes coming from industrial sector, municipal sector and agricultural sector.…”

Section: Introductionmentioning

confidence: 99%

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Tun

Juchelková

2018

Environmental Engineering Research

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Nowadays, drying methods for municipal solid waste quality improvement have been adopted in the developed and developing countries to valorize wastes for a renewable energy source, reduce dependency on fossil fuel and keep safer disposal at landfills. Among them, biodrying, biostabilization, thermal drying and solar drying are the most common. Drying of municipal solid waste could offer several environmental and economic benefits. Therefore, this review highlighted the drying methods for municipal solid waste quality improvement around the world and compared them based on the reduction of moisture, weight and volume of municipal solid wastes against drying temperature and time by using statistical analysis. It was observed that the drying temperature of different drying methods accounted for 115 ± 40°C for thermal drying, 59 ± 37°C for solar drying, 55 ± 15°C for biodrying and 58 ± 11°C for biostabilization. Among the drying methods, thermal drying provided the shortest drying time. The moisture reduction, weight reduction, volume reduction and heating value increase of municipal solid waste could vary with drying temperature and time. Finally, the benefits and drawbacks of different drying methods were specified, and recommendations were made for the future efficient drying.

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Section: Introductionmentioning

confidence: 99%

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Tun

Juchelková

2018

Environmental Engineering Research

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“…Biodrying leads to the decrease in moisture content with simultaneous preservation (or increase) of the calorific value, resulting in the production of a stable, solid fuel [10] with reduced moisture content, characterised by the termination of biological degradation [11][12][13][14]. Biodrying is usually viewed as the process of biological processing of mixed municipal solid waste before sorting in mechanical-biological processing systems [11,12,[15][16][17][18], however it is rarely seen as the process of increasing the quality (calorific value and microbiological stability) of the final fuel. It is not to be forgotten that mixed municipal solid waste is a mixture of many types of waste, including organic (green, cooking, paper, cardboard, etc.…”

Section: Introductionmentioning

confidence: 99%

Microbiological and Energetic Assessment of the Effects of the Biodrying of Fuel Produced from Waste

Malinowski

Wolny-Koładka

2017

Ecological Chemistry and Engineering S

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Biological drying (biodrying) is one of the methods of biological processing of waste, used mainly as part of the mechanical biological treatment of mixed municipal waste. Biological drying uses the heat released during the decomposition of organic matter to reduce the amount of water in dried waste. The aim of the analyses was to provide a microbiological and energetic (fuel) assessment of the process of biodrying of alternative fuel (RDF) obtained by mechanical sorting of mixed municipal waste. The resulting alternative fuel (obtained with just sorting) is characterised by varied moisture content and the presence of diverse groups of microorganisms. The analyses were intended to assess 3 alternative methods of biodrying of alternative fuel in order to produce a stable end product for utility power generation and the cement industry. The analyses were performed using special bioreactors equipped with custom (innovative) fluidised bed, aeration system (air flow rate 500 m 3 · h -1 ), effluents drain systems, post-process air offtake and 4 temperature sensors. The assessment of the impact of the employed bed aeration methods on the quality of the alternative fuel was performed in 3 repetitions with the same external parameters. The obtained results show that after 8 days of biodrying, in the most favourable option, the moisture content in the fuel was reduced to the level of 18.7%, i.e. by 39%, the resulting fuel was microbiologically stable and the calorific value of the fuel was increased on average by 3.2 MJ · kg -1 .

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“…The mechanism of biodrying is a variation of the aerobic decomposition used within the MBT to stabilize the waste, which makes it analogous to composting, but realized in the short term [6,7]. During the process of biodrying, self-heating occurs due to the exothermic reactions of the chemical and biological processes during the transformation of the organic matter [8,9].…”

Section: Introductionmentioning

confidence: 99%

The Biological Drying of Municipal Waste in an Industrial Reactor—A Case Study

2022

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One of the methods of municipal solid waste (MSW) treatment is biodrying. The literature describes mainly the results obtained in a laboratory- and a pilot-scale reactor. The manuscript presents the results of MSW treatment in a full-scale bio-drying reactor (150 m3). The reactor is operated in one of the Polish installations specializing in mechanical-biological treatment (MBT). During the 14 day period of biodrying in the reactor, the parameters of MSW such as the moisture, temperature, loss on ignition (LOI), and net heating value (NHV) were examined. The temperature of the air in the reactor was also examined. The research also included changes in the above-mentioned parameters of MSW located in three parts of the reactor: the front, middle, and back. The test results showed that the moisture content of the waste decreased from the initial level of 55% to the level of 30%. This was accompanied by an increase in the NHV from 6.3 MJ kg−1 to 9.6 MJ kg−1. At the same time, the LOI decreased from 68% d.m. to 45% d.m. The LOI decrease is not favorable from the point of view of using MSW as refuse-derived fuel (RDF), as was expected in the final usage stage. The results have application value as the plant operator, having at their disposal the controlling of the reactor’s ventilation and the temperature inside the reactor, should select the speed of the moisture removal from MSW at such a level as to minimize the LOI decrease.

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Full-scale biodrying process of municipal solid waste

Cited by 4 publications

References 17 publications

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Drying methods for municipal solid waste quality improvement in the developed and developing countries: A review

Microbiological and Energetic Assessment of the Effects of the Biodrying of Fuel Produced from Waste

The Biological Drying of Municipal Waste in an Industrial Reactor—A Case Study

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