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Possibilities of using sewage sludge as a secondary source of phosphorus in the Czech Republic.
Václavková, Šárka ; Zach, Boleslav ; Kerberová, V. ; Krejčí, T. ; Krňávek, M. ; Maléř, P. ; Špaková, M. ; Vojtová, I.
A result of the project Possibilities of using sewage sludge as a secondary source of phosphorus in the Czech Republic is a comprehensive study mapping not only the phosphorus content but also the degree of contamination of sewage sludge from various types of wastewater treatment plants in the Czech Republic. This study represents a basis for planning site-specific strategies for the use of phosphorus from sewage sludge in the Czech Republic. Six basic steps led to the elaboration of the study: analysis of the WWTP network in the Czech Republic (1), repeated sampling, analysis of sludge and evaluation of sludge properties of sludges collected from selected facilities representing typical representatives of the nature of source areas and wastewater treatment and sludge treatment technologies (2), legislative analysis of the future of sewage sludge management (3), tests of thermal treatment of sludge and their evaluation (4), search of available technological solutions for sludge treatment (5) and proposal of the concept of sludge treatment in the Czech Republic (6).
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Use of Sodium Bicarbonate for Flue Gas Treatment in Small Scale.
Zach, Boleslav ; Pohořelý, Michael ; Šyc, Michal ; Svoboda, Karel ; Václavková, Šárka ; Moško, Jaroslav ; Brynda, Jiří ; Punčochář, Miroslav
The trend of reduction of landfilling can lead, especially in areas with low population density, to the need to build new waste-to-energy capacities in the form of small units. However, flue gas treatment in small scale has to be sufficiently simple to decrease capital costs and allow the construction of such facilities. For that reason, the possibility of one-step dry flue gas treatment at compromise conditions was investigated as well as the limitation of flue gas composition.\n\n
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Properties of Biochar Produced by Slow Pyrolysis of Stabilized Sewage Sludge.
Moško, Jaroslav ; Pohořelý, Michael ; Skoblia, S. ; Beňo, Z. ; Brynda, Jiří ; Zach, Boleslav ; Šyc, Michal ; Václavková, Šárka ; Jeremiáš, Michal ; Svoboda, Karel
Direct application of stabilized sewage sludge on agricultural soil is currently a big concern because of its significant content of detectable organic micropollutants. Proper sludge treatment should suppress its negative features and produce material suitable for soil amendment. Slow pyrolysis is one of such treatments. We studied the influence of pyrolysis temperature (400-800 °C) on material and energy balances and on elementary composition of the pyrolysis solid residue (biochar). Pyrolysis at higher temperatures resulted in lesser biochar yield and promoted gas yield. The macronutrient content of biochar increased with an increase in pyrolysis temperature (except for nitrogen).
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Stabilized Sewage Sludge Pyrolysis: Properties of the Products.
Moško, Jaroslav ; Pohořelý, Michael ; Skoblia, S. ; Beňo, Z. ; Svoboda, Karel ; Václavková, Šárka ; Brynda, Jiří ; Larkhayeva, K. ; Zach, Boleslav ; Šyc, Michal
Příspěvek se zabývá materiálovou a energetickou bilancí pyrolýzy suchého stabilizovaného čistírenského kalu a základními vlastnostmi a složením pyrolýzních produktů.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22018012410160 - PDF
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Material and Energy Utilization of Dry Stabilized Sewage Sludge – Production of Biochar by Medium-Temperature Slow Pyrolysis.
Pohořelý, Michael ; Moško, Jaroslav ; Zach, Boleslav ; Šyc, Michal ; Václavková, Šárka ; Jeremiáš, Michal ; Svoboda, Karel ; Skoblia, S. ; Beňo, Z. ; Brynda, J. ; Trakal, L. ; Straka, Pavel ; Bičáková, Olga ; Innemanová, P.
The article summarizes the main properties of biochar produced by medium-temperature slow pyrolysis of anaerobically stabilized sewage sludge.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22017071208540 - PDF
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