Identyfikatory
Warianty tytułu
Relationship between time of feedstock retention in reactor and compost stabilization process
Języki publikacji
Abstrakty
This study presented investigation results of temperature and organic master changes during two stages composting process. The feedstock components were dewaterednot digested sewage sludge and rape straw as a structural material. The aim of investigation concerned determination of relationship between time of composting duration in rotating rector (125 m3 volume) and time of stabilization of compost in periodically browsed windrows. Five cycles with different time of feedstock retention were monitored: 7, 10, 14, 18 and 21 days. The second stage of composting in all cycles lasted five months. The results show that longer compost retention in reactor effectively reduce time needed for compost stabilization. Results presented in this paper are a part of investigations which have on aim determination of relationship between duration time of two phases of composting in two stage systems. Changes of both, temperature and content of organic substances durin the process, are one of many parameters which describe process of compost stabilisation [3, 6, 7]. Conducted analysis of achieved results allows to state that longer retention time of feedstock in the reactor causes shorter period of stabilisation. The basis of such conclusion is character of changes of determined physical parameters and interpretation of calculated gradients of organic substances. Changes of both parameters were interpreter in the context of compost stability, which is not synonymous with achieving its maturity. It is hard to conclude, that 37 days of composting, with assumption of 21 days of retention of feedstock in the reactor (fig. 1 - 21 days cycle), assures gaining mature compost. In this regard examinations also included determinations of other physicochemical parameters, including so-called humification index. Those results will be the content of next papers in the Annual Set of Environment Protection.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Strony
393--402
Opis fizyczny
bibliogr. 10 poz.
Twórcy
autor
- Politechnika Koszalińska
Bibliografia
- 1. Jędrczak A.: Biologiczne przetwarzanie odpadów. Wydawnictwo Naukowe PWN. Warszawa 2007r.
- 2. Epstein E.: The science of composting. Technomic Publishing Company. 1997.
- 3. Garcia C., Hernandez T., Costa.: Changes in carbon fraction during composting and maturation of organic waste. Environmental Management. Vol. 3. 1991.
- 4. Bilitewski B., Hardtle G., Marek K.: Podręcznik Gospodarki Odpadami. Seidel Przywecki Sp. z .o.o., Warszawa 2003.
- 5. Bień J.B.: Osady Ściekowe. Teoria i praktyka. Wydawnictwo Politechniki Częstochowskiej. Częstochowa 2002.
- 6. Bernal M.P., Paredes C., Sanchez-Monedero M.A., Cegarra J.: Maturity and stability parameters of compost prepared with a wide range of organic waste. Bioresource Technology. Vol 63, 91-99. 1998.
- 7. Zmora-Nahum S., Markovitch O., Tarchitzky J., Chen Y.: Dissolved organic carbon (DOC) as a parameter of compost maturity. Solid Biology and Biochemistry. Vol.37, 2109-2116. 2005.
- 8. Hue N.V., Liu J.: Predicting compost stability. Compost Science and Utilization. Vol. 6, 6-13. 1995.
- 9. Goyal S., Dhull S.K., Kapoor K.K.: Chemical and biological changes during composting of different organic waste and assessment of composting maturity.Bioresources Technology. Vol. 96, 1584-1591. 2005.
- 10. Weppen P.: Process calorimetry on composting of municipal organic waste. Biomass and Bioenergy, Vol. 21, 289-299, 2001.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPW9-0008-0042