Journal of Food, Agriculture and Environment

Transport of nutrients and bacteria in runoff after the application of swine wastewater

Author(s):

Natássia J. Cosmann *, Silvio C. Sampaio, Fabiana G. S. Pinto, Denise Palma, Jonathan Dieter, Claudia M. d. S. Cordovil, Amarilis de Varennes

Recieved Date: 2012-01-20, Accepted Date: 2012-04-29

Abstract:

The swine activity is a characteristic of the south region of Brazil, and in the State of the Parana it has been relieving economical and social importance. However, this activity presents low environmental quality due to the generation of great volumes of wastewater effluents (liquid residues) with high pollutants concentration due to physical, chemical and microbiological characteristics. The destination of the swine wastewater (SW) is an important factor in front of the survival and expansion of this activity. The application of the SW in the ground it is an alternative for the destiny of the residues, however, the application rates must be studied in each regional situation so that this practice does not damage the environment, especially water resources and public health through the contribution of pathogens in surface waters. This study evaluated the potential for diffuse pollution when swine wastewater is applied on Red Dystrophic Latosol. Five doses of swine wastewater were used (0, 25, 50, 75 and 100 mm³.ha^-1) with runoff induced by simulated rainfall at an intensity of 60 mm.h^-1. The chemical and microbiological parameters of runoff fractions from the experimental plots were evaluated. The data were analyzed using regression analysis to determine the potential model fitting all of the parameters. It was found that the concentrations of total nitrogen (N), ammonia nitrogen (NH₄⁺), nitrate+nitrite (NO₃^-+NO₂^-), phosphorus (P), potassium (K⁺), magnesium (Mg⁺²), total coliforms (TC), thermotolerant coliforms (EC) and enterococci (ENT) in the runoff fractions were positively dependent on the swine wastewater dose. A diffuse pollution potential matrix was developed from the exponents of the potential equations, enabling the relationship between the parameters to be analyzed. From the matrix, it was found that the microbiological parameters dominate the chemical parameters in the sequence: TC > EC > ENT > K⁺ > Mg⁺² > NO₃^-+NO₂^- > P > NH₄⁺ > N. 

Keywords:

Diffuse pollution, agriculture, water resources, indicator bacteria, animal waste, runoff, swine wastewater, environmental pollution, Red Dystrophic Soil, diffuse pollution potential matrix

---

Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 2
Category: Environment
Pages: 785-789

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :