The Impact of Dry Mass Content in Pig Liquid Manure on its Treatment with a Filtration Method

• Autorzy: Zygmunt Kowalski , Agnieszka Makara , Marta Marszałek , Józeff Hoffmann , Krystyna Hoffmann
• Języki publikacji: EN

Abstrakty

EN

The present study examines the impacts of dry mass content in pig liquid manure on its treatment with a filtration method. Samples of liquid manure with variable dry mass content were subjected to treatment using phosphoric acid, sulfuric acid, lime milk and superphosphate, as well as to thermal treatment, while in the last phase of pressure filtration. Increased dilution of the manure resulted in a reduced raw materials consumption ratio and improved filtration process efficiency, which ranged from 408 to 3765 kg/m2/h. The highest filtration efficiency was achieved using manure containing 3% dry mass, while the lowest efficiency was observed in manure at 10% dry mass. The increase in liquid manure dilution also reduced chemical oxygen demand in the filtrate, which ranged from 15 062 to 3656 mg/l. An appropriate manure dilution level, under the constant parameters of the treatment process, reduced phosphorus content in the filtrate to < 10 mg/kg while simultaneously enriching the post-filtration sediment with this precious fertilizing component.

Słowa kluczowe

EN

pig manure treatment; filtration method; dry mass; filtrate

• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2014
• Tom: 16
• Numer: 3
• Strony: 106-110

Daty

wydano

2014-09-01

online

2014-10-03

Twórcy

autor

Zygmunt Kowalski

• Cracow University of Technology, Institute of Chemistry and Inorganic Technology, Warszawska 24, 31-155 Cracow, Poland,

autor

Agnieszka Makara

• Cracow University of Technology, Institute of Chemistry and Inorganic Technology, Warszawska 24, 31-155 Cracow, Poland

autor

Marta Marszałek

• Cracow University of Technology, Institute of Chemistry and Inorganic Technology, Warszawska 24, 31-155 Cracow, Poland

autor

Józeff Hoffmann

• Wrocław University of Technology, Institute of Inorganic Technology and Mineral Fertilizers, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Krystyna Hoffmann

• Wrocław University of Technology, Institute of Inorganic Technology and Mineral Fertilizers, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

• 1. Rulkens, W.H., Klapwijk, A., & Willersb, H.C. (1998). Recovery of valuable nitrogen compounds from agricultural liquid wastes: potential possibilities, bottlenecks and future technological challenges. Environ. Pollut. 102 (S1), 727-735. DOI: 10.1016/S0269-7491(98)80105-X.[Crossref]
• 2. Pawełczyk, A. & Muraviev, D. (2003). The integrated treatment for purification of liquid pig wastes. Przem. Chem. 82 (8-9), 861-863, (in Polish).
• 3. Kowalski, Z., Makara, A., Hoffmann, J. & Hoffmann, K. (2012). Research report from realization of grant No 14-0003-10/2010. Obtaining of NPK type fertilizers from the pig manure using cleaner production methods. Cracow University of Technology, Cracow, (not published), (in Polish).
• 4. Hjorth, M., Christensen, K.V., Christensen, M.L. & Sommer, S.G. (2010). Solid-liquid separation of animal slurry in theory and practice. A review. Agron. Sustain. Dev. 30 (1), 153-180. DOI: 10.1051/agro/2009010.[WoS][Crossref]
• 5. González-Fernández, C., Nieto-Diez, P.P., León- -Cofreces, C. & García-Encina, P.A. (2008). Solids and nutrients removals from the liquid fraction of swine slurry through screening and fl occulation treatment and infl uence of these processes on anaerobic biodegradability. Bioresour. Technol. 99, 6233-6239. DOI: 10.1016/j. biortech.2007.12.022.[WoS][Crossref]
• 6. Kowalski, Z., Makara, A., Hoffmann, J. & Hoffmann, K. (2012). Polish patent application P. 400044, (in Polish).
• 7. Polish standard PN-ISO 6060:2006. Water quality - Determination of the chemical oxygen demand, (in Polish).
• 8. Polish standard PN-EN 25663. Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium, (in Polish).

Identyfikatory

DOI

10.2478/pjct-2014-0059