BIONUTRIENT REMOVAL WITH A SEQUENCING BATCH REACTOR

Citation
Ro. Mines et Gd. Milton, BIONUTRIENT REMOVAL WITH A SEQUENCING BATCH REACTOR, Water, air and soil pollution, 107(1-4), 1998, pp. 81-89
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environmental Sciences","Water Resources","Metereology & Atmospheric Sciences
Journal title
ISSN journal
0049-6979
Volume
107
Issue
1-4
Year of publication
1998
Pages
81 - 89
Database
ISI
SICI code
0049-6979(1998)107:1-4<81:BRWASB>2.0.ZU;2-4
Abstract
Removal of nitrogen and phosphorus from a domestic wastewater using a sequencing batch reactor (SBR) was evaluated at solid retention times (SRTs) of 9.3, 13.8, and 18.3 days respectively. Oxygen uptake rates ( OURs) and sludge settling characteristics were determined at each SRT investigated. COD removal, nitrification, denitrification, and phospho rus removal were accomplished by using the following operating cycle: 15-min unmixed fill; 2-hr mixed anaerobic period; 3-hr mixed aerobic p eriod; 3-hr mixed anoxic period; 0.5-hr reaeration period; l-hr settli ng period; l-hr decant period; and a 1.5-hr idle period. Advanced wast ewater treatment (AWT) standards of 5/5/3/1 mg L-1 for biochemical oxy gen demand (BOD5), suspended solids (SS), total nitrogen (TN), and tot al phosphorus (TP) could not be achieved with the bench-scale SBR.