Water disinfection requires a balance between the use of enough disinfectant without overdosing and formation of high concentration of disinfection by-products (DBPs).Balance relies on the disinfectant type, temperature, and the dissolved organic carbon concentration; engineers use tradeoffs between DBP formation and microbial control to design appropriate treatment measure through use of WatPRO software to simulate the disinfection procedure.
WatPRO calculates the Giardia, virus removal and innovation credits achieved by user-defined treatment train regulated by United States facilities treating surface water to optimum. This software predicts levels of haloacetic acid, DBS, and chlorites controlled in water; this computer program is easy to use to all users familiar with windows.
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Tutorials on the use of this software are through the installed licensed version found in engineering computer laboratories in the university. Students work on short tutorials that accompany the lab instructions to instruct the software to optimize the disinfection process in a treatment plant and recommend improvement to the treatment train.
As a consultant hired by the municipality to control DBP, viruses and Giardia, the criteria used in the software to obtain an optimum composition of water treatment components of DBP in the existing treatment train, is set to include two chemical feedlines, parallel filters, a Clearwell and effluent line. Evaluation of the current operation and summarizing the current problem within the existing process train analyzes system performance while adjusting building coagulation, installation of baffles in a tank, increasing alum dose and adjustment of alkalinity of the water to improve the process. Comparison between different alternatives that offer optimum solution brings out the best concentration of DBP and microorganisms. Options that initially are not considered added after justification into the treatment train. The consultant is required to write a report to make findings in the treatment model, make observations and recommendations to improve the treatment process.
