AWWA WQTC65761

This powerpoint presentation presents a study at the Black Brook Water Treatment Plant formanganese removal and overcoming operational limitations throughthe use of an alternative synthetic green sand media. A history of manganese treatment at the Black Brook Water Treatment Plant is provided, along with a pilot study on media selection that investigated synthetic alternatives and showed consistent manganese removal by Calgon GSR Plus Media from 0.595 mg/L to 0.018 mg/L, a 97% reduction. In early 2007 media replacement with Calgon GSRPlus was completed. The backwash performance of Calgon GSR Plus is presented, along with bed expansion analysis. A summary of study results indicated that optimal filter backwashing is of great importance inmaintaining long term filter performance; and,synthetic green sand media which can be lighter andless dense than traditional glauconite green sand hasbeen shown effective in achieving an optimalbackwash at a water treatment plant with a limitedbackwash rate.Benefits include:less costs and headaches in long run;extends life of media;reduces need for air wash;longer filter runs;better manganese removal; and, improved water quality. Includes figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2007

Number of Pages:

44

File Size:

1 file , 2.5 MB