The efficacy of polyacrylamide and related compounds to remove microorganisms and nutrients from animal wastewater

La Eficacia del Poliacrilamido y los Compuestos Relacionados para Remover Nutrientes y Microorganismos del Agua de Deshecho Animal

Entry, James A. and Sojka, R.E. (2000) The efficacy of polyacrylamide and related compounds to remove microorganisms and nutrients from animal wastewater. Journal of Environmental Quality. 29:1905-1914.

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Abstract

Polyacrylamide (PAM) is an effective flocculent and we hypothesized
that it would reduce transport of microorganisms and nutrients
in water flowing over and through soil. We measured nutrients, total
coliform bacteria, fecal conform bacteria, fecal streptococci, active
and total fungi, and active and total bacteria in water leached through
cattle, fish, and swine manure, PAM, PAM + AI(SO4)3, or PAM +
CaO mixtures, and 25-cm sand columns. In the laboratory study,
PAM, PAM + AI(SO4)3, and PAM + CaO treatments reduced total
coliform bacteria, fecal conform bacteria, and fecal streptococci by 10-
to 1000-fold in water leached through sand columns. Polyacrylamide +
Al(SO4)3 and PAM + GRO treatments reduced the concentration of
NH., total P, and PO, by 20 to 60% in leachate when cattle and swine
manure were applied. In a field study, after water flowed over all
three manure sources and then PAM, PAM + Al(SO4)3, or PAM +
CaO in furrows, total conform bacteria, fecal coliform bacteria, and
fecal streptococci were reduced by 10- to 1000-fold in water flowing
1 and 27 m downstream of the treatments compared with the control
treatment. When water flowed over cattle manure and then PAM +
Al(SO4)3 or PAM + CaO, PO, concentration was reduced by 50 to
70% and total P concentration was reduced by 0 to 75% in water
27 m downstream of the treatments compared with the PAM alone
treatment. Polyacrylamide + M(504)3 and PAM + CaO should be
able to reduce the numbers of enteric microorganisms and nutrient
concentration in animal wastewater running off animal confinement
areas, reducing the amount of these pollutants entering surface and
ground waters.

Item Type:	Article
NWISRL Publication Number:	1024
Subjects:	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:	14 Nov 2016 19:02
Item ID:	112
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/112