Date of Award

2013

Degree Type

Thesis

Degree Name

M.A.Sc.

Department

Civil and Environmental Engineering

First Advisor

Rajesh Seth

Second Advisor

Paul Henshaw

Keywords

Applied sciences, Phosphorus, Primary treatment, Suspended solids, Wastewater, Ontario

Rights

CC BY-NC-ND 4.0

Abstract

Phosphorus is a vital nutrient for biological wastewater treatment plants, but it is also a regulated pollutant. The Lou Romano Water Reclamation Plant (LRWRP), located in Windsor, Ontario, uses chemically enhanced primary treatment (CEPT) with alum and anionic polymer to remove phosphorus and suspended solids (SS). The plant was upgraded in 2007 to include biological aerated filter (BAF) as secondary treatment, and is currently adding phosphorus (∼0.2 - 1 mg/L) following CEPT for the proper functioning of the BAF. Jar tests experiments revealed that alternate combinations of the currently used alum and anionic polymer were not able to reduce the amount of bioavailable phosphorus removed during CEPT while maintaining SS concentration in the primary effluent at levels suitable for the BAF. This objective was achieved using other chemical (cationic polymer) combinations. However this option is not economically viable at the current costs of various chemicals and phosphorus supplement being used.

Share

COinS