Cinetica

KINETIC STUDY ON THE NITROGEN REMOVAL PROCESS IN AN ARTIFICIAL SUBSURFACE MARSH

Authors: Reyes Fuentes Raúl, Sibaja Martínez Rubí, Pérez Cruz Homero Jaime, Castellanos Martínez AntonioAddress: Universidad Autónoma “Benito Juárez” de Oaxaca, Facultad De Ciencias Químicas. Av. Universidad S/N Ex-hacienda De 5 Señores Oaxaca Oaxaca.
rreyesfuentes@hotmail.com

Keywords: artificial marsh,bioremediation, kinetic, removal, wastewater.

“The Artificial Marshes: An Alternative in Wastewater Bioremediation”

The exploitation of natural resources in our country and in the state ofOaxaca should be a study determinant to solve problems of scarcity, mainly those which are necessary for its importance in the context of all our needs. An ecologic and economic alternative for waterexploitation, are the artificial marshes as a wastewater treatment technology for reuse. There have been built over 20 conventional and natural wastewater treatment systems in the state of Oaxaca, theseinclude some artificial marshes which for different circumstances some of them are not working and others do improperly, the poor ecologic culture and ignorance of many of the phenomena that occur inthese systems have a significant impact in the efficiency operation of these biological reactors, which are characterized for its versatility in the removal of various wastewater pollutants. This paperreports the kinetic study in the removal of nitrogen forms of an artificial subsurface marsh (stone bed) installed in the town of San Andrés Huyapan. The methodology includes: sequential sampling inthe predetermined sections of the reactor, analysis and quantification of nitrogen forms by using Kjeldahl extractor, selective ion potentiometer and mathematical modeling (MathCAD) from speedintegrated forms assuming the plug flow reactor model. The mathematical models obtained contain the reaction orders and the rate constants, pretending with this data optimize the design conditions and...