<abstract xmlns="http://www.w3.org/1999/xhtml"><p> 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/m<sup>2</sup>/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 &lt; 10 mg/kg while simultaneously enriching the post-filtration sediment with this precious fertilizing component.</p></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.

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

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

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

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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...

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

Published Online: Oct 03, 2014

Page range: 106 - 110

DOI: https://doi.org/10.2478/pjct-2014-0059

Keywords
pig manure treatment, filtration method, dry mass, filtrate

© by Zygmunt Kowalski

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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

Published Online: Oct 03, 2014

Page range: 106 - 110

DOI: https://doi.org/10.2478/pjct-2014-0059

Keywordspig manure treatment, filtration method, dry mass, filtrate

© by Zygmunt Kowalski

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
pig manure treatment, filtration method, dry mass, filtrate