1. bookVolume 16 (2014): Issue 3 (September 2014)
Journal Details
License
Format
Journal
eISSN
1899-4741
First Published
03 Jul 2007
Publication timeframe
4 times per year
Languages
English
access type Open Access

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

Published Online: 03 Oct 2014
Volume & Issue: Volume 16 (2014) - Issue 3 (September 2014)
Page range: 106 - 110
Journal Details
License
Format
Journal
eISSN
1899-4741
First Published
03 Jul 2007
Publication timeframe
4 times per year
Languages
English
Abstract

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.

Keywords

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.10.1016/S0269-7491(98)80105-XSearch in Google Scholar

2. Pawełczyk, A. & Muraviev, D. (2003). The integrated treatment for purification of liquid pig wastes. Przem. Chem. 82 (8-9), 861-863, (in Polish).Search in Google Scholar

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).Search in Google Scholar

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/2009010.10.1051/agro/2009010Search in Google Scholar

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.Search in Google Scholar

6. Kowalski, Z., Makara, A., Hoffmann, J. & Hoffmann, K. (2012). Polish patent application P. 400044, (in Polish).Search in Google Scholar

7. Polish standard PN-ISO 6060:2006. Water quality - Determination of the chemical oxygen demand, (in Polish).Search in Google Scholar

8. Polish standard PN-EN 25663. Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium, (in Polish).Search in Google Scholar

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