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
Seasonal MLSS adjustment Joseph McDowell 2 15148 Sunday, April 11, 2010 2:01 PM 
managing activated sludge system during food shortage John Wang 2 8111 Wednesday, July 6, 2011 9:24 AM 
envirofilt JK 0 3777 Sunday, December 11, 2011 6:52 PM 
aerobic digester-very high solids-odor problem jim 4 12046 Sunday, May 16, 2010 5:13 PM 
SBR Omniflow Jerry 0 7783 Thursday, August 26, 2010 3:34 PM 
floating sludge problem JC 1 10069 Saturday, April 24, 2010 6:42 PM 
Mercury Control Jason Graham 0 3865 Tuesday, November 29, 2011 2:09 PM 
Flow verification James Royer 2 8182 Monday, October 25, 2010 12:34 PM 
Determining the settlement tank's volume Hajar 0 3843 Tuesday, September 25, 2012 7:55 PM 
tank numbering h2ochem 1 5860 Sunday, June 26, 2011 1:22 PM 
Precipitation in bulk storage tank for sodium hypochlorite? GSain 3 10070 Sunday, November 13, 2011 11:00 PM 
salinity in activated sludge Greg Gress 2 4871 Thursday, June 14, 2012 5:21 AM 
VFD control of Mamoth Rotors in Oxidation Ditch Greg Gress 1 4180 Tuesday, November 22, 2011 3:30 PM 
Wastewater Blog Grant Weaver 5 10189 Monday, May 7, 2012 4:15 AM 
Digester Gas Piping GB Gehrke 6 11518 Wednesday, November 23, 2011 7:45 AM 
Septage/Grease Screening Units Frederick Auermuller 0 3715 Tuesday, January 3, 2012 3:51 PM 
High COD Results evik 1 6447 Thursday, February 24, 2011 9:13 AM 
FOG Causing Primary Clarifier Failures(5) Erwin Bonatz 1 1524 Sunday, May 20, 2012 11:25 AM 
FOG Causing Primary Clarifier Failures(4) Erwin Bonatz 0 1022 Monday, May 14, 2012 10:44 AM 
FOG Causing Primary Clarifier Failures(2) Erwin Bonatz 0 1056 Monday, May 14, 2012 10:38 AM 
MBR sludge condition Elizabeth Lawrence 4 6527 Tuesday, March 22, 2011 10:29 PM 
WWTP Opportunity - City of Kuna, ID DPFG 0 3753 Tuesday, September 4, 2012 12:17 PM 
transportation of dewatered alum sludge Doctor Sewage 0 7884 Monday, August 2, 2010 3:55 AM 
SCADA advice needed Dennis Hudson 4 8506 Thursday, October 28, 2010 3:54 PM 
Frozen tank Deerfield Wastewater 1 7226 Sunday, November 13, 2011 11:01 PM 
color codes for equipment and pipes deepleveltrash 1 10146 Wednesday, March 31, 2010 4:38 PM 
very low SVIs!! Deb 5 8517 Monday, November 29, 2010 5:55 PM 
Toxicity of Sanitizers/Commercial Cleaners David Allen 0 3761 Thursday, November 10, 2011 5:01 PM 
Quaternary Ammonium Compounds David Allen 3 12398 Monday, July 11, 2011 3:05 PM 
chemical phosphorus removal using alum david 1 5688 Thursday, April 7, 2011 1:54 PM 
We have a terrible foaming problem in our aerobic digesters DarylP 1 1203 Friday, August 10, 2012 2:18 PM 
Filiment Problem (O21N) Can't pinpoint the cause...Help. Daniel Knox 0 1097 Tuesday, June 26, 2012 9:52 AM 
P.H. Problems D.Mak 6 9831 Wednesday, September 21, 2011 7:27 AM 
Pump Mixing Systems Anaerobic Digesters Christopher Morphey 0 6323 Tuesday, May 24, 2011 10:55 AM 
Primary clarifier chain Chris 4 8739 Sunday, November 13, 2011 11:02 PM 
Lost of pressure Chief 8 6240 Tuesday, March 15, 2011 7:02 AM 
reduction of flows cb 2 11211 Wednesday, January 27, 2010 9:24 AM 
High fecal coliform results Carmine Goneconte 7 10218 Sunday, November 13, 2011 10:59 PM 
Activated sludge process -WAS claculation Azmathulla Zaffrulla 2 12095 Sunday, April 3, 2011 6:07 AM 
Using Mag Hydroxide Andres Vinent 3 2759 Monday, June 25, 2012 1:17 PM 
Alkalinity control Andres Vinent 0 2951 Tuesday, February 21, 2012 3:51 PM 
aerobic-anoxic operation ale 0 7316 Sunday, November 14, 2010 2:04 AM 
Ozone for Fecal Coliform Reduction 17633991 0 1110 Sunday, April 14, 2013 6:36 PM 
pH of Mixed Liquor 17627563 0 2672 Monday, December 31, 2012 11:10 AM 
Isopropanol issues 01797999 1 4156 Tuesday, August 28, 2012 2:38 PM 
flow meter calibration - Requires reporting to the regulators? 01782191 0 3559 Wednesday, October 17, 2012 5:35 PM 
flow meter calibration - that is requires reporting to the regulators? 01782191 0 2278 Tuesday, October 16, 2012 9:55 PM 
Ferric Flow Meters? Is it a good idea?(2) 01780074 1 2168 Sunday, April 14, 2013 7:02 PM 
Alien Bugs(2) 01663302 0 3811 Monday, December 23, 2013 10:09 AM 
Oxidation ditch 01645290 0 3241 Thursday, November 29, 2012 10:24 AM 
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