AWWA WQTC50397

This project focused on assessing the treatment impacts resulting from substitution of a coagulant generated with an electrocoagulation unit for a chemical coagulant in the process train. The ultimate goal of this pilot study was to assess the technical and economic feasibility of the use of electrocoagulation (EC) for potable water treatment in lieu of chemical coagulation (CC). Side-by-side pilot testing of EC and CC was accomplished to satisfy the following specific objectives: determine whether EC can replace CC and meet current drinking water standards by achieving effective coagulation; determine the effectiveness of EC and CC in reducing total organic carbon (TOC), disinfection byproducts (DBPs) and microorganisms and in meeting Disinfectants/Disinfection Byproducts (D/DBP) Rule and Interim Enhanced Surface Water Treatment Rule (IESWTR) requirements; evaluate the cost/benefit of EC compared to CC; and evaluate the effectiveness of using EC to remove phosphorus and control algae formation in reservoirs. Due to very low nutrient levels in the source water reservoir, the effectiveness of using EC to remove phosphorus and to control algae formation could not be evaluated. To assess the efficacy of EC as a replacement for CC, head-to-head comparisons were performed. Periods of EC pilot process operation (one to three weeks) were alternated with periods of CC pilot process operation. The electrocoagulation equipment for the project was supplied by Andco Environmental Processes, Inc. Filtered and applied water quality data and filter run lengths were used to compare performance of the two coagulation approaches. Includes table, figures.

Product Details

Edition:

Vol. - No.

Published:

01/01/1999

File Size:

1 file , 580 KB