Full Description

This powerpoint presentation begins by providing a brief overview of nitrification and a chloramines dosing strategy to control nitrification. The problem statement asks, "Can excess Clsub2/sub be added to achieve the targetresidual at a 5:1 Clsub2/sub:NHsub3/sub-N ratio?" A case study of Trinity River water is presented that included previous dosing at a 5:1 applied ratio that resulted in freeammonia in the delivery pipe, and a reduction in NHsub3/sub could save money, but breakpoint rxnsare a concern. The experimental methodology included: bench-scale experiment;Clsub2/sub and NHsub3/sub added to Trinity River water in chlorinedemand-free amber glass bottles (250 mL); duplicates conducted for experiments zero (0) and 4; total and free chlorine measurements by DPDmethod (Hach 8167 and 8021); and,total ammonia by Salicylate Method (Hach 8155). Raw water characteristics are presented, along with chlorine demand in Trinity River water, minimal breakpoint reactions, and disinfection byproducts results. Includes tables, figures.

Product Details

Edition: Vol. - No. Published: 11/01/2009 Number of Pages: 20File Size: 1 file , 960 KB