Study the efficiency of the wetlands in removing organic matter and nitrogen from wastewater

• Grant number: 10/12445-9
• Support Opportunities: Regular Research Grants
• Start date: October 01, 2010
• End date: December 31, 2012
• Field of knowledge: Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
• Principal Investigator: Eduardo Luiz de Oliveira
• Grantee: Eduardo Luiz de Oliveira
• Host Institution: Faculdade de Engenharia (FE). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

This project aims to wastewater treatment systems through wetlands (Wetlands), which will consist of two systems, the first horizontal flow, whose main objective is to increase the removal efficiency of organic matter. For a better condition for study will be used three systems of beds composed of different substrates, the first, filled with pebbles, stones 3 and sand, the second filled with pebbles, expanded polystyrene (Styrofoam) and ground and recycled sand. The effluent generated in this first system will be routed to a second stage of treatment which consists of a vertical flow system with recirculation, the objective of this scheme is to increase the efficiency of nitrogen removal. This will be used three beds composed of different substrates, the first, filled with pebbles and stones 1 and 3, the second with stone 3 and pebbles, and finally a third composed of stone 3, expanded polystyrene (Styrofoam) recycled and ground and pebbles. With the joining of the two systems is intended to achieve a significant reduction in organic matter and nitrogen, since the carbonaceous matter present in sewage is degraded, mostly aerobically by microorganisms that are attached to the filter material and roots macrophytes and anaerobically by bacteria adhered to the substrate of the filter bed. As for nitrogen, according to Arias (2005) of vertical flow wetlands are efficient at producing well-nitrified effluent and with the addition of Schedule recirculation back to the effluent treatment process, where you will find favorable conditions (anoxic conditions) to reduce rate of total nitrogen. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DA SILVA, JULLIANA ALVES; SARTI, ARNALDO; RIBEIRO DA SILVA, GUSTAVO HENRIQUE. Performances of two pilot decentralized wastewater treatment plants used to treat low-strength wastewater. Desalination and Water Treatment, v. 91, p. 93-100, OCT 2017. (10/12445-9, 11/10816-2)