A comparative pilot scale study analyzing the performance of biological versus conventional drinking water filtration with the application of various backwash strategies for headloss and ripening control

It appears your Web browser is not configured to display PDF files. Download adobe Acrobat or click here to download the PDF file.

Click here to download the PDF file.

Creator: 

Piche, Ashley Elaine Marie

Date: 

2019

Abstract: 

A pilot scale comparison study between conventional and biological dual media anthracite/sand filters was conducted to assess their performance and address industry concerns with biofiltration. The filters were subjected to various backwash and temperature conditions, including the addition of air scour and extended terminal subfluidization wash (ETSW) at 15-25°C and 0-5°C. The biofilters had significantly lower DBP formations (p<0.05) than the conventional filters under all conditions, by 33-46%. The biofilters exhibited greater headloss development than the conventional filters with a water only backwash, but it was found to be minimized by up to 19% when applying air scour and ETSW under warm water conditions. The conventional filters proved to be more vulnerable in terms of particle release during ripening, regardless of backwash strategy. A double stage ETSW step was also explored and found to improve ripening particle counts and turbidity in both filter types, even further than a single stage ETSW, while simultaneously providing headloss control.

Subject: 

Engineering - Environmental

Language: 

English

Publisher: 

Carleton University

Thesis Degree Name: 

Master of Applied Science: 
M.App.Sc.

Thesis Degree Level: 

Master's

Thesis Degree Discipline: 

Engineering, Environmental

Parent Collection: 

Theses and Dissertations

Items in CURVE are protected by copyright, with all rights reserved, unless otherwise indicated. They are made available with permission from the author(s).