Application of microwave energy to the hygienization of sewage sludge

• Autorzy: Dańczuk M. , Łomotowski J.
• Języki publikacji: EN

Abstrakty

EN

The article deals with the possibilities of microwave energy utilization in the hygienization of sewage sludge. It presents the evaluation of the destruction effectiveness of selected microorganisms existing in sewage sludge as a result of microwave heating. Additionally, it describes the influence of the microwave energy dose on the selected physical-chemical indexes of sludge and on its structure. The tests were conducted on secondary sludge and anaerobically digested sludge. Sewage sludge was heated with the microwave dose from 0.6 kJ/g up to 24 kJ/g of sewage. The frequency of microwaves was 2450 MHz. It was proven that microwaves could be applied to the hygienization of sewage sludge. They should be considered a highly efficient method of heating up sludge to the temperature of its pasteurization. During microwave heating, microorganisms existing in sludge are destroyed. The most sensitive ones are Salmonella and Coli bacteria, whereas thermophilic bacteria and Clostridium demonstrate significant resistance to microwaves.

Słowa kluczowe

EN

sewage sludges; hygienization; energy utilization; microwaves

PL

osady ściekowe; higienizacja; energia mikrofalowa; wykorzystanie energii; mikrofale

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2010
• Tom: Vol. 36, nr 4
• Strony: 77--86
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Dańczuk M.

autor

Łomotowski J.

• Faculty of Environmental Engineering and Protection, Kielce University of Technology, ul. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce

Bibliografia

• [1] MARCINKOWSKI T., Sludge stabilization processes, and the effectiveness of pathogenic organisms destruction, The National Scientific-Technical Conference on the Utilization of Sewage Sludge, Technical and Legal Conditionings, 1996, 119–126.
• [2] STRAUCH D., Survival of pathogenic micro-organisms and parasites in excreta, manure and sewage sludge, Rev. Sci. Tech. off. Int. Epiz., 1991, 10, 3, 813–846.
• [3] Office for Official Publications of the European Communities, Evaluation of sludge treatments for pathogen reduction – final report, Luxembourg, 2001.
• [4] MARCINKOWSKI T.A., Effect of alkalization process on changes in the chemical composition of secondary sludge, Environment Protection Engineering, 2010, 2, 153–160.
• [5] DĘBOWSKI M., KRZEMIENIECKI M., The influence of Fenton’s reagent on the raw sludge disinfection, Environment Protection Engineering, 2007, 1, 65–75.
• [6] NELSON S.O., A review and assessment of microwave energy for soil treatment to control pesos, Trans. ASAE, 1996, 39, 1, 281–289.
• [7] NELSON S.O., Potential agricultural applications and microwave energy, Microwave Conference, APMC 92, Asia-Pacific, 1992, 1, 55–58.
• [8] HAQUE K.E., Microwave energy for mineral treatment processes – a brief review, International Journal of Mineral Processing, 1999, 57, 1–24.
• [9] LIMANOWSKI W., Theory outline of discharges in dielectrics, Scientific-Technical Publishing, Warsaw, 1988.
• [10] THOSTENSON E.T., CHOU T.W., Microwave processing: fundamentals and applications, Composites Part A, Applied Science and Manufacturing, 1999, 30, 1055–1071.
• [11] JENG D.K.H., KACZMAREK K.A., WOODWARTH A.G., BALASKY G., Mechanism of microwave sterilization in the dry state, Applied and Environmental Microbiology, American Society for Microbiology, 1987, 53, 9, 2133–2137.
• [12] VELA G.R., WU J.F., Mechanism of lethal action of 2450 MHz radiation on microorganisms, Applied and Environmental Microbiology, 1979, 37, 3, 550–553.
• [13] HONG S.M., PARK J.K., LEE Y.O., Mechanisms of microwave irradiation involved in the destruction of fecal coliforms from biosolids, Water Research, 2004, 38, 1615–1625.
• [14] Public Interest Energy Research Program (PIER), Emerging Environmental Technologies, An Analysis of New Treatment Technologies for the California Energy Commission 1007411, Final Report, California Energy Commission, 1516 Ninth Street Sacramento, CA 95814, 2003.