scholarly journals Sewage sludge conditioning with the application of ash from biomass-fired power plant

2018 ◽  
Vol 30 ◽  
pp. 03005 ◽  
Author(s):  
Marta Wójcik ◽  
Feliks Stachowicz ◽  
Adam Masłoń
Keyword(s):  
Power Plant ◽  
Sewage Sludge ◽  
Combustion Products ◽  
Biomass Combustion ◽  
Sewage Sludge Treatment ◽  
Sewage Sludge Management ◽  
Environmental Requirements ◽  
Sludge Conditioning ◽  
The Impact ◽  
Biomass Ashes

During biomass combustion, there are formed combustion products. Available data indicates that only 29.1 % of biomass ashes were recycled in Poland in 2013. Chemical composition and sorptive properties of ashes enable their application in the sewage sludge treatment. This paper analyses the impact of ashes from biomass-combustion power plant on sewage sludge dewatering and higienisation. The results obtained in laboratory tests proved the possitive impact of biomass ashes on sewage sludge hydration reduction after dewatering and the increase of filtrate volume. After sludge conditioning with the use of biomass combustion by-products, the final moisture content decreased by approximatelly 10÷25 % in comparison with raw sewage sludge depending on the method of dewatering. The application of biomass combustion products in sewage sludge management could provide an alternative method of their utilization according to law and environmental requirements.

Use of Ashes from Biomass Combustion as an Aggregate for Concrete

2019 ◽  
Vol 958 ◽  
pp. 111-115
Author(s):  
V.A.S. Schein ◽  
G. Conte ◽  
Marilena Valadares Folgueras ◽  
L.V.O. Dalla Valentina ◽  
M.R. Medeiros
Keyword(s):  
Compressive Strength ◽  
Power Plant ◽  
Environmentally Friendly ◽  
Biomass Combustion ◽  
Chemical Analyses ◽  
Structural Concrete ◽  
Mixing Ratios ◽  
Physical And Chemical ◽  
Biomass Ashes

This paper discusses an environmentally-friendly destination for the residual ashes resulting from the firing of biomass (wood wastes) at the Engie Brasil Cogeneration Power Plant located in Lages, Santa Catarina, Brazil. The study proposes reusing the residue as a substitution for crushed stones in the production of concrete. Environmental, physical, and chemical analyses were performed for characterization of the ashes. Specimens prepared with ash and subjected to testing presented a compressive strength of around 18.63 Mpa (2700 psi), which is in compliance with the ACI-213R and ASTM C330-5 specifications. With pretreatment and proper mixing ratios, biomass ashes may be employed as an aggregate in the manufacture of lightweight structural concrete.

scholarly journals Evaluating the Potential for Combustion of Biofuels in Grate Furnaces

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1951 ◽  
Author(s):  
Małgorzata Wzorek
Keyword(s):  
Sewage Sludge ◽  
Combustion Process ◽  
Pollutant Emissions ◽  
Biomass Combustion ◽  
Municipal Sewage Sludge ◽  
Hard Coal ◽  
Meat And Bone Meal ◽  
Bone Meal ◽  
Coal Slime ◽  
The Impact

The paper assesses the impact of combustion of biofuels produced based on municipal sewage sludge in stoker-fired boilers on the amount of pollutant emissions and examines the tendency of ash deposition of biofuels formed during the combustion process. The combustion tests were performed in a laboratory system enabling simulation of a combustion process present in stoker-fired boilers. The study was conducted for three types of biofuels; i.e., fuel from sewage sludge and coal slime (PBS fuel), sewage sludge and meat and bone meal (PBM fuel) and fuel based on sewage sludge and sawdust (PBT) with particle size of 35 mm and 15 mm. This paper describes and compares the combustion process of biofuels with different granulation and composition and presents the results of changes in emission values of NOx, SO2, CO, and CO2. The emission results were compared with the corresponding results obtained during combustion of hard coal. The results showed that biofuels with lower particle sizes were ignited faster and the shortest ignition time is achieved for fuel based on sewage sludge and coal slime-PBS fuel. Also, the highest NO and SO2 emissions were obtained for PBS fuel. During the combustion of fuel based on sewage sludge and meat and bone meal (PBM), on the other hand, the highest CO2 emissions were observed for both granulations. Biofuels from sludge show a combustion process that is different compared to the one for hard coal. The problems of ash fouling, slagging, and deposition during biofuels combustion were also identified. The tendency for ash slagging and fouling is observed, especially for fuel from sewage sludge and meat and bone meal (PBM) and fuel based on sewage sludge and sawdust (PBT) ashes which consist of meat and bone meal and sawdust which is typical for biomass combustion.

scholarly journals Analysis of the Correlation between Combustion Products in Biomass Thermal Power Plant Using Association Rule Mining

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5532
Author(s):  
Saša Igić ◽  
Dragana Bošković ◽  
Barbara Vujkov ◽  
Nemanja Igić ◽  
Todor Janić ◽  
...  
Keyword(s):  
Power Plant ◽  
Association Rule ◽  
Association Rule Mining ◽  
Thermal Power ◽  
Combustion Process ◽  
Combustion Products ◽  
Biomass Combustion ◽  
Rule Mining ◽  
Operation Process ◽  
Biomass Plant

The biomass combustion process is inevitably accompanied by the emission of pollutant gasses. This paper gives a comprehensive analysis of the external variables and combustion products of the biomass plant. The analyzed data were collected from 18 MWt boiler in combined heat and power plant Sremska Mitrovica over a period of four months. The correlations between the recorded data were determined using a unique methodology, which is based on association rule mining. The results of the study can be further used for the reduction of the harmful combustion products, as well as for the optimization of the operation process.

scholarly journals The Possibility of Sewage Sludge Conditioning and Dewatering with the Use of Biomass Ashes

2017 ◽  
Vol 20 (2) ◽  
pp. 153-164 ◽  
Author(s):  
Marta Wójcik ◽  
◽  
Feliks Stachowicz ◽  
Adam Masłoń ◽  
◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Sludge Conditioning ◽  
Biomass Ashes

scholarly journals The application of biomass ashes in sewage sludge management – a SWOT analysis

2018 ◽  
Vol 44 ◽  
pp. 00196
Author(s):  
Marta Wójcik ◽  
Feliks Stachowicz
Keyword(s):  
Renewable Energy ◽  
Sewage Sludge ◽  
Power Plants ◽  
Swot Analysis ◽  
Renewable Energy Sources ◽  
Biomass Combustion ◽  
Biomass Ash ◽  
Sludge Management ◽  
Sewage Sludge Management ◽  
By Products

Biomass plays an important role amongst renewable energy sources and for this reason, it is sometimes called as “future fuel”. According to different statistics, the share of biomass in renewable energy production is in excess of 50% and rising. The main disadvantage of biomass combustion in power plants is the production of combustion by-products, namely fly and bottom ash. In line with the sustainable development and waste hierarchy, biomass combustion by-products should be managed in different sectors of economy. Due to the specific properties, biomass ash might be applied as an effective reagent in sewage sludge management. This article shows the SWOT analysis (strengths, weaknesses, opportunities and threats) associated with the use of biomass combustion by-products in sewage sludge treatment. The presented analysis could constitute the initial stage in implementation of new method in a big way in treatment plants.

scholarly journals Exergy analysis of cavitation pretreatment of sludge

2018 ◽  
Vol 49 ◽  
pp. 00089
Author(s):  
Sławomir Różycki ◽  
Marian Banaś
Keyword(s):  
Sewage Sludge ◽  
Flue Gas ◽  
Exergy Analysis ◽  
Additional Energy ◽  
Sludge Treatment ◽  
Cavitation Phenomenon ◽  
Sewage Sludge Treatment ◽  
Exergy Balance ◽  
The Impact ◽  
Exergy Analyses

A number of papers present exergy analyses of various wastewater treatment systems. The current development of these systems is mainly aimed at improving their energy efficiency, reducing the share of sludge subject to storage, and reducing their harmfulness. Some of these systems can be supported by the use of the cavitation phenomenon in the processing. The generation of cavitation requires, however, the use of devices or machines and thus additional energy consumption. Therefore, this treatment should be objectively justified, e.g. through exergy analysis, which takes into account not only the amount of energy used in processes, but also its quality. The paper treats the methodology for determining the impact of the use of cavitation in the exergy balance of sewage sludge treatment system. Then, it presents the results of an exemplary analysis comparing sewage sludge treatment systems (with and without application of cavitation phenomenon) in which biogas is produced during the fermentation, then burned in a co-generator, finally receiving useful energy in the form of electric current and hot flue gas stream.

scholarly journals The Evaluation of the Effectiveness of Sewage Sludge Conditioning with the Application of Biomass Ashes

2017 ◽  
Vol 20 (3) ◽  
pp. 295-304 ◽  
Author(s):  
Marta Wójcik ◽  
◽  
Feliks Stachowicz ◽  
Adam Masłoń ◽  
◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Sludge Conditioning ◽  
Biomass Ashes

scholarly journals Sewage Sludge Thermal Treatment Technology Selection by Utilizing the Analytical Hierarchy Process

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1255
Author(s):  
Dinko Đurđević ◽  
Maja Trstenjak ◽  
Ivona Hulenić
Keyword(s):  
Sewage Sludge ◽  
Thermal Treatment ◽  
Analytical Hierarchy Process ◽  
Technology Selection ◽  
Treatment Technology ◽  
Sludge Management ◽  
Sludge Treatment ◽  
Sewage Sludge Treatment ◽  
Sewage Sludge Management ◽  
Hierarchy Process

Sewage sludge management has gained significance in the last several years, due to its nutrient and energy content. However, technology selection is one of the greater challenges because it is not possible to implement a technology that covers all the requirements of the considered environments. Consequently, this paper shows an example of the utilization of an analytical hierarchy process, as a decision-making tool in terms of technology selection, for sewage sludge management in Rijeka, Croatia. The criteria structuring and evaluation process with the description of several possible alternatives for thermal treatment technologies are defined within this research. For the case of Rijeka, the best and most suitable technology for sewage sludge treatment is gasification, which coincides with the results obtained from the analysis of the literature review. According to the results in this paper, the possibilities of the use of this scientific method on the national level for the selection of sewage sludge treatment technology should be considered, due to the simplicity of its use and capability of its adaptation to various situations and areas.

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