WEF Discussions — Now on LinkedIn!

WEF is pleased to announce the creation of free LinkedIn groups associated with its technical discussion forum topics. Through these LinkedIn groups, members will be able to view and participate in discussions, as well as communicate with one another via direct messages. Share your experiences and knowledge, ask questions and respond to other discussions as frequently as you like!

You must have a LinkedIn profile to join a LinkedIn group; you can create your profile here. If you already have a LinkedIn profile, all you need to do is submit a request to join one or all of the following groups:

Water Environment Federation (Main) | Biosolids | Collection Systems | Nutrients | Stormwater 
Utility Management | Water Reuse | Water for Jobs | Watershed Management | Laboratory Practices 

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Operation and Maintenance
  Topics Topic Starter Replies Views Last Post
Chlorine survival in activated sludge Jurek 6 15571 Sunday, November 13, 2011 11:03 PM 
Seasonal MLSS adjustment Joseph McDowell 2 19000 Sunday, April 11, 2010 2:01 PM 
managing activated sludge system during food shortage John Wang 2 8643 Wednesday, July 6, 2011 9:24 AM 
envirofilt JK 0 8060 Sunday, December 11, 2011 6:52 PM 
aerobic digester-very high solids-odor problem jim 4 16010 Sunday, May 16, 2010 5:13 PM 
SBR Omniflow Jerry 0 11312 Thursday, August 26, 2010 3:34 PM 
floating sludge problem JC 1 13478 Saturday, April 24, 2010 6:42 PM 
Mercury Control Jason Graham 0 8139 Tuesday, November 29, 2011 2:09 PM 
Flow verification James Royer 2 12046 Monday, October 25, 2010 12:34 PM 
Determining the settlement tank's volume Hajar 0 7895 Tuesday, September 25, 2012 7:55 PM 
tank numbering h2ochem 1 9378 Sunday, June 26, 2011 1:22 PM 
Precipitation in bulk storage tank for sodium hypochlorite? GSain 3 12368 Sunday, November 13, 2011 11:00 PM 
salinity in activated sludge Greg Gress 2 10199 Thursday, June 14, 2012 5:21 AM 
VFD control of Mamoth Rotors in Oxidation Ditch Greg Gress 1 8548 Tuesday, November 22, 2011 3:30 PM 
Wastewater Blog Grant Weaver 5 16328 Monday, May 7, 2012 4:15 AM 
Digester Gas Piping GB Gehrke 6 14466 Wednesday, November 23, 2011 7:45 AM 
Septage/Grease Screening Units Frederick Auermuller 0 7921 Tuesday, January 3, 2012 3:51 PM 
High COD Results evik 1 9999 Thursday, February 24, 2011 9:13 AM 
FOG Causing Primary Clarifier Failures(5) Erwin Bonatz 1 4064 Sunday, May 20, 2012 11:25 AM 
FOG Causing Primary Clarifier Failures(4) Erwin Bonatz 0 5262 Monday, May 14, 2012 10:44 AM 
FOG Causing Primary Clarifier Failures(2) Erwin Bonatz 0 5181 Monday, May 14, 2012 10:38 AM 
MBR sludge condition Elizabeth Lawrence 4 10272 Tuesday, March 22, 2011 10:29 PM 
Decanting solds & scum Dwayne 1 11657 Friday, June 19, 2015 6:28 AM 
WWTP Opportunity - City of Kuna, ID DPFG 0 8200 Tuesday, September 4, 2012 12:17 PM 
transportation of dewatered alum sludge Doctor Sewage 0 11298 Monday, August 2, 2010 3:55 AM 
SCADA advice needed Dennis Hudson 4 12204 Thursday, October 28, 2010 3:54 PM 
Frozen tank Deerfield Wastewater 1 10816 Sunday, November 13, 2011 11:01 PM 
color codes for equipment and pipes deepleveltrash 1 14426 Wednesday, March 31, 2010 4:38 PM 
very low SVIs!! Deb 5 12120 Monday, November 29, 2010 5:55 PM 
Toxicity of Sanitizers/Commercial Cleaners David Allen 0 7466 Thursday, November 10, 2011 5:01 PM 
Quaternary Ammonium Compounds David Allen 3 16228 Monday, July 11, 2011 3:05 PM 
chemical phosphorus removal using alum david 1 9254 Thursday, April 7, 2011 1:54 PM 
We have a terrible foaming problem in our aerobic digesters DarylP 1 5532 Friday, August 10, 2012 2:18 PM 
Filiment Problem (O21N) Can't pinpoint the cause...Help. Daniel Knox 0 5226 Tuesday, June 26, 2012 9:52 AM 
P.H. Problems D.Mak 6 13765 Wednesday, September 21, 2011 7:27 AM 
BNR Internal Recycle Cooper 0 13499 Wednesday, January 28, 2015 8:27 PM 
Pump Mixing Systems Anaerobic Digesters Christopher Morphey 0 10076 Tuesday, May 24, 2011 10:55 AM 
Primary clarifier chain Chris 4 12716 Sunday, November 13, 2011 11:02 PM 
Lost of pressure Chief 8 9806 Tuesday, March 15, 2011 7:02 AM 
reduction of flows cb 2 14841 Wednesday, January 27, 2010 9:24 AM 
High fecal coliform results Carmine Goneconte 7 14787 Sunday, November 13, 2011 10:59 PM 
Activated sludge process -WAS claculation Azmathulla Zaffrulla 2 16155 Sunday, April 3, 2011 6:07 AM 
Using Mag Hydroxide Andres Vinent 3 5126 Monday, June 25, 2012 1:17 PM 
Alkalinity control Andres Vinent 0 7461 Tuesday, February 21, 2012 3:51 PM 
aerobic-anoxic operation ale 0 13483 Sunday, November 14, 2010 2:04 AM 
Ozone for Fecal Coliform Reduction 17633991 0 5404 Sunday, April 14, 2013 6:36 PM 
pH of Mixed Liquor 17627563 0 5189 Monday, December 31, 2012 11:10 AM 
Isopropanol issues 01797999 1 8365 Tuesday, August 28, 2012 2:38 PM 
flow meter calibration - Requires reporting to the regulators? 01782191 0 7744 Wednesday, October 17, 2012 5:35 PM 
flow meter calibration - that is requires reporting to the regulators? 01782191 0 6445 Tuesday, October 16, 2012 9:55 PM 
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