Polyacrylamide + aluminum sulfate and polyacrylamide + calcium oxide remove coliform bacteria and nutrients from swine wastewater

Poliacrilamido + AI2(SO4)3 y poliacrilamido + CaO remueven bacterias coliformes y nutrientes del agua de deshecho de cerdos

Entry, James A. and Phillips, Ian and Stratton, Helen and Sojka, R.E. (2003) Polyacrylamide + aluminum sulfate and polyacrylamide + calcium oxide remove coliform bacteria and nutrients from swine wastewater. Environmental Pollution. 121:453-462.

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Abstract

Animal wastes are a major contributor of nutrients and enteric microorganisms to surface water and ground water. Polyacrylamide (PAM) mixtures are an effective flocculent, and we hypothesized that they would reduce transport of microorganisms in flowing water. After waste water running at 60.0 1 min-1 flowed over PAM + Al2(SO4)3, or PAM + Ca0 in furrows, total coliform bacteria (TC) and fecal coliform bacteria (FC) were reduced by 30-50% at 1 and 50 m downstream of the treatments compared to the control. In a column study, PAM + Al 2 (SO4)3 , and PAM + Ca0 applied to sandy, sandy loam, loam, and clay soils reduced NH4 and ortho-P concentrations in leachate compared to the source waste water and the control. PAM + Al 2 (SO4)3 and PAM + CaO applied to sandy, sandy loam and loam soils reduced both total and ortho-P, concentrations in leachate compared to the source wastewater and control treatment. In a field study, PAM + Al 2(SO4)3 , or PAM + CaO treatments did not consistently reduce NH4, ortho-P, and total P concentrations in wastewater flowing over any soil compared to inflow wastewater or the control treatment. With proper application PAM + Al 2 (SO4)3 and PAM + CaO may be able to reduce the numbers of enteric bacteria in slowly flowing wastewater running off animal confinement areas, reducing the amount of pollutants entering surface water and groundwater.

Item Type: Article
NWISRL Publication Number: 1092
Subjects: Manure > Chemistry
Polyacrylamide (PAM) > Water-soluble PAM (WSPAM)
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:50
Last Modified: 09 Nov 2016 17:58
Item ID: 151
URI: https://eprints.nwisrl.ars.usda.gov/id/eprint/151

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