AWWA ACE70964

This powerpoint presentation begins by presenting a brief overview of the reuse of treated wastewater and reuse applications. The impact of organic carbon and regrowth is outlined, along with study objectives that include: survey treated wastewater effluents - focus on regrowthdrivers and treatment process in 21 effluent samples;intensive 12-month survey at 4 facilities - treatment, storageand distribution impacts on key drivers of microbial growth; and,disinfection study - deploy pipe loops at 4 facilities to testdisinfection strategies on regrowth drivers and microbialdensities. Experimental methods included assimilable organic carbon (AOC) bioluminescence. Results of the wastewater survey are presented, along with results of disinfection studies. Conclusions indicate the following: the rapid bioluminescence method for AOC was successful formeasuring the biostability of reclaimed waters; the levels of natural organic matter had a dramatic impact onthe microbiology of reclaimed water; membrane bioreactors effectively reduce AOC and BDOC levels,confirmed high quality of effluent - data suggests that othertechnologies can be operated to produce similar quality; activated sludge technology - capable of producing effluentwith low levels of biodegradable organic carbon; open storage and disinfection increase AOC and BDOC levels; and, anaerobic conditions, sulfide production. Includes figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2009

Number of Pages:

46

File Size:

1 file , 1.9 MB