Removal of heavy metals from excessive activated sludge

• Autorzy: Gąsiorek J. A.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the laboratory scale anaerobic treatment results from an acidic autolysis of a waste activated sludge and from a desulfiirication process of this sludge, too. The sludge with high contents of the heavy metals used in the study was derived from the treatment plant at Cze_stochowa. The anaerobic first-stage treatment system includes an acid reactor or a fermentation reactor with the population of the sulfate reducing bacteria e.g. Desulfovibrio desulfuricans respectively. The second stage was carried out on the aerated reactor, which was used to heavy metals extraction during bioleaching of the sludge from the first stage with Thiobacillus ferrooxidans bacteria. The removal yield of the heavy metals are given after each stages of the sludge treatment. The organic sludge after second stage operation can be application within agriculture as its heavy metals content is very low. The liquid product on separation phosphates and the metal hydroxides as the carbon source can be used to enhance the nitrogen and phosphorus removal at the waste water treatment plants. These investigations are part of the recycling project called 1TP (integrated treatment plant) process depending on the integration of the desulfurication to waste water treatment with an activated sludge technology at a treatment plant.

Słowa kluczowe

EN

waste activated sludge; biological treatment plant; heavy metals; Desulfovibrio desulfuricans; desulfurication; Thiobacillus ferrooxidans; bioleaching of heavy metals; volatile fatty acids; organic fertilizer

PL

osad ściekowy; biologiczne oczyszczanie ścieków; metale ciężkie; Desulfovibrio desulfuricans; desulfuracja; thiobacillus ferrooxidans; bioługowanie z metali ciężkich; lotne kwasy tłuszczowe

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2002
• Tom: Vol. 4, nr 3
• Strony: 8--12
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Gąsiorek J. A.

• Instytut of Inorganic Chemistry, ul. Sowinskiego 11, 44-101 Gliwice, fax: [phone]

Bibliografia

• (1). Gąsiorek J. A., Gąsiorek R, Krystek A., Kempny Z., Tomaszewski J., Procedure for nutrient removal in wastewater treatment, Patent application RR, P-340 359 (29.05.2000 r.).
• (2). Suschka, J., Popławski, S., Potential for P-recoyery as struvite, Scope Newsletter, 1999, 41, 13.
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• (4). Gąsiorek J. A., Waste pyritic coal as an energetic source, Fuel Processing Technology., 1997, 52, 175.
• (5). Gąsiorek J. A., and others, EPR study and structural aspects of ferredoxins obtained from Thiobacillus ferrooxidans, Appl. Microbiol. Biotechnol., 1999, 52, 96.
• (6). Polanco F., Novel biological processes for advanced wastewater treatment. 3A, Euro Summer School. Water and Resource Recovery in Industry, August 26-30, 2001, Wageningen, the Netherlands.
• (7). Miller K., US water reuse: current status and future trends, Wat. Env. Technology, 1990, 11, 122.
• (8). Veeken A. H. M., Hamelers H. V. M., Removal of heavy metals from sewage sludge by extraction with organic acids. Wat. Sci. Tech., 1999, 40/1, 129.
• (9). Cwalina B., Sulfur metabolism of Thiobacillus ferrooxidans in the process of metals leaching from sulfide minerals. Wyd. Uniwersytetu Śląskiego, Katowice, 1994.