• AWWA WQTC65921
Provide PDF Format

Learn More

AWWA WQTC65921

  • Evaluation of High-Rate Clarification Processes as a Pretreatment to Microfiltration of a Surface Water
  • Conference Proceeding by American Water Works Association, 11/01/2007
  • Publisher: AWWA

$12.00$24.00


A pilot study was conducted to evaluate the treatment processes for a proposed 40.5 milliongallons per day water treatment plant for the Turlock Irrigation District in Turlock, Californiafrom August 2006 to April 2007. The pilot plant consisted of two process trains. The firstconsisted of a static mixer, flocculator, and plate settler, followed by three microfiltration/ultrafiltration (MF/UF) systems; the second was reserved for independent high-rateclarification (HRC) suppliers to pilot their proprietary systems. Two dissolved air flotationmanufacturers and one ballasted flocculation manufacturer were piloted and evaluated on theirperformance.The HRC systems were evaluated based on an assessment of their ability to treat the surfacewater to meet clarified water quality objectives. HRC clarified water was also qualitativelyassessed to evaluate its fouling potential of membrane systems, a proposed downstream processfor the full scale facility. The comparison was made based on conventional water quality parameters,such as turbidity, total organic carbon (TOC), UVA 254 absorbance, color, andpotential reduction of fouling potential to downstream microfiltration membranes.The fouling potential of the clarified effluent was quantified based on several factors includingthe residual aluminum and iron concentrations, TOC concentrations, UV-254 absorbance, andthe TSS concentrations. In addition to these water quality parameters, modified silt densityindex (SDI) tests were run on the clarified effluents and the raw water in an attempt to comparethe fouling rates. Includes tables, figures.

Related Products

AWWA MTC53745

AWWA MTC53745

Implementation of a 25 MGD Immersed Membrane Filtration Plant: The Olivenhain Municipal Water Distri..

$12.00 $24.00

AWWA MTC69659

AWWA MTC69659

Low Pressure Reverse Osmosis and Donnan Dialysis for Simultaneous Removal of Nitrate and Perchlorate..

$12.00 $24.00

AWWA IMTECH57850

AWWA IMTECH57850

Integrating Information Technology to Optimize Unidirectional Flushing..

$12.00 $24.00

AWWA CSC95013

AWWA CSC95013

Networking the Water Production Division..

$12.00 $24.00