AWWA ACE70574

This powerpoint presentation begins by providing a brief overview of manganese forms, problems and standards. A case study is presented of manganese removal from groundwater (GW) at the Lantern Hill Water Treatment Plant. Topics covered include: reduction and dissolution of manganese oxides; investigation of manganese release from filter media(Biotic or Abiotic?); steps - molecular analysis of DNA from GW andfull scale filter media samples; results - laboratory column experiments withfull-scale filter media; and, observation - laboratory column experiments with full-scale GS:Set III (not autoclaved media and acetate feed). Results: the molecular analysis of the DNA extracted from the LH GW and full scale GSmedia showed presence of manganese and iron reducing micro-organisms;significant level of Mn release was observed only from the column with adequatecarbon source and non-autoclaved media samples; and,the molecular analysis results of the GS media (that showed steady manganeserelease in laboratory column study with sodium acetate feed) showed 98% of therepresentative micro-organisms were manganese reducers. Includes figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2009

Number of Pages:

21

File Size:

1 file , 1.7 MB