Marta Marszałek
Czasopismo Techniczne, Chemia Zeszyt 1 Ch (4) 2016, 2016, s. 77 - 90
https://doi.org/10.4467/2353737XCT.16.049.5311Pig slurry is a by-product of non-bedding pig farming. It is a heterogeneous liquid mixture of faeces, urine, spilt feed and water used for waste removal. As it carries large amounts of organic and biogenic substances, slurry can pose a risk for the natural environment; therefore, it should be properly managed. This paper presents methods for the recovery of water and fertilising components from pig slurry using low-pressure (microfiltration, ultrafiltration) and high-pressure (nanofiltration, reverse osmosis) membrane techniques.
Marta Marszałek
Czasopismo Techniczne, Chemia Zeszyt 1-Ch (18) 2014 , 2014, s. 81 - 91
https://doi.org/10.4467/2353737XCT.14.278.3366Pig slurry is classified as a natural fertilizer of animal origin, being a mixture of faeces, urine, remains of fodder and water used for the elimination of faeces. It is generated in non-bedding pig farming conditions, where animals are kept on slatted floors (grate or slotted floor). This paper presents the general characteristics of pig slurry, its physicochemical properties and its microbiological composition. Also, factors affecting slurry properties are discussed.
Marta Marszałek
Czasopismo Techniczne, Chemia Zeszyt 2-Ch (17) 2012, 2012, s. 125 - 134
https://doi.org/10.4467/2353737XCT.14.124.1901Intensive non-bedding pig farming results in the formation of large quantities of liquid waste in the form of slurry. In areas with high concentration of pig farms where we have to deal with insufficient acreage of arable land there is often a difficulty with management of pig slurry’s surplus. The solution to this problem may become a separation of slurry into solid fraction, rich in phosphorus and liquid fraction, which contains mainly nitrogen and potassium. The paper presents the fractionation of pig slurry using sedimentation and pressurized filtration.