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Information Seminar Paper

Title

INVESTIGATION OF BIOLOGICAL NUTRIENT REMOVAL PERFORMANCE IN A MODIFIED STEP FEED PROCESS

Pages

 Start Page | End Page

Keywords

SIMULTANEOUS NITRIFICATION AND DENITRIFICATION (SND) 

Abstract

 A PILOT SCALE MODIFIED STEP FEED PROCESS WAS PROPOSED TO ENHANCE ORGANICS AND NUTRIENT (N AND P) REMOVAL PERFORMANCE FROM MUNICIPAL WASTEWATER. IT COMBINED UNIVERSITY OF CAPE TOWN (UCT) AND STEP FEED PROCESS. EFFECT OF INFLOW DISTRIBUTION RATIOS AND NUTRIENTS RATIOS WERE INVESTIGATED. THE HIGHEST REMOVAL EFFICIENCIES OF 94% FOR CHEMICAL OXYGEN DEMANDING (COD), 1.2 MG/L FOR EFFLUENT NITRATE CONCENTRATION AND 76% FOR PHOSPHORUS WERE OBTAINED, RESPECTIVELY, AT THE INFLOW DISTRIBUTION RATIO OF 40: 35: 25%. IN ADDITION, AEROBIC SIMULTANEOUS NITRIFICATION AND DE NITRIFICATION AND ANOXIC DENITRIFYING PHOSPHORUS UPTAKE MADE A DISTINCT CONTRIBUTION TO ENHANCE NUTRIENT REMOVAL. THE PROPOSED SYSTEM WAS DEMONSTRATED TO BE AN ATTRACTIVE ENHANCED BIOLOGICAL NUTRIENT REMOVAL PROCESS FOR WASTEWATER TREATMENT PLANTS DUE TO RELATIVELY HIGH NUTRIENT REMOVAL, ROBUST SLUDGE SETTLE ABILITY AND ENERGY SAVINGS.

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