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The Technical Area of the AWWOA web site is provided for any Operator that would like some insight into various topics of interest within the field of water and wastewater treatment. Most all of the papers presented come from technical sessions held during the Associations' Annual Seminars. However, if any of you would like to have a paper published on this site, we would welcome your effort. E-mail awwoa@awwoa.ab.ca with your information and arrangements can be made to publish your paper.

Here you will find a number of papers that were presented at the AWWOA 2004 Annual Seminar held in Banff. A short synopsis details each of the papers presented.

The following papers are in an Adobe Acrobat PDF file format. You will need to have the Acrobat Reader installed in your computer in order to view these files or be using the latest browser with the Adobe plug-in installed.

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Papers presented are the opinion of the author and not that of the Operators Association (AWWOA).

Coagulation 101

A paper by David J. Pernitsky, Ph.D., P. Eng. with Associated Engineering in Calgary.
ABSTRACT:

In drinking water treatment, the coagulation process is used to destabilize suspended particles and to react with dissolved organic material in the raw water. Proper coagulation is essential for good filtration performance and for disinfection by-product (DBP) control. Optimizing coagulation is the most cost-effective way to decrease treated water turbidity and DBP levels. This paper attempts to summarize the coagulation chemistry necessary for optimizing coagulation for both turbidity and organic carbon removal, and presents guidelines and strategies for selecting the best coagulation and maintaining the best coagulation conditions for individual raw waters.


299 kb

Baffle Curtain System

A paper by Dave Martin, P. Eng. Applications Engineer, Layfield Geosynthetics and Industrial Fabrics Ltd.
ABSTRACT:

Mr. Martin discusses the installation of baffle curtain systems in two City of Ottawa Water Purification Plants. The Britannia and Lemeiux Island Water Purification Plants are existing facilities owned by the City of Ottawa. Each Plant provides roughly 200 mega litres of potable water each day to Ottawa residents. To improve chlorine contact time in the clearwells of the two plants, the City of Ottawa decided to install baffle curtain systems. Layfield's involvement in the project consisted of the design of the baffle curtain supports and attachments, the factory fabrication of 800 lineal metres of baffle curtains, and the installation of the curtains in the clearwells.


371 kb

Flow Metering

A paper by G. Moxon, an Instrument Specialist with Robins Flotech Ltd.
ABSTRACT:

Mr. Moxon discusses the merits of why we need to measure flow and the proper device to do the job.


34 kb

The Design and Performance of the Bonnybrook UV Disinfection Facility

A paper by Paul Do, M.Sc., P.Eng. Senior Process Engineer, Calgary Wastewater Utilities and Environmental Protection with the City of Calgary
ABSTRACT:

In 1994, The City of Calgary commissioned a 100,000 m3/d expansion to the Bonnybrook Wastewater Treatment Plant. As part of this expansion, a 500,000 m3/d low-pressure UV disinfection facility was put into operation in June 1994 to disinfect the total effluent flow from the plant. At the time of commissioning, the Bonnybrook UV Disinfection System was the largest of its kind in North America. This paper summarizes the design and performance of this facility. In addition, the paper also describes the selection and utilization of the patented, long-lasting and efficient Philips UV lamps that substantially improve the stability, efficiency and economy of the Bonnybrook UV Disinfection Facility.


1705 kb

 

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