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 15110 Sunday, April 11, 2010 2:01 PM 
managing activated sludge system during food shortage John Wang 2 8054 Wednesday, July 6, 2011 9:24 AM 
envirofilt JK 0 3738 Sunday, December 11, 2011 6:52 PM 
aerobic digester-very high solids-odor problem jim 4 12010 Sunday, May 16, 2010 5:13 PM 
SBR Omniflow Jerry 0 7814 Thursday, August 26, 2010 3:34 PM 
floating sludge problem JC 1 10068 Saturday, April 24, 2010 6:42 PM 
Mercury Control Jason Graham 0 3791 Tuesday, November 29, 2011 2:09 PM 
Flow verification James Royer 2 8126 Monday, October 25, 2010 12:34 PM 
Determining the settlement tank's volume Hajar 0 3778 Tuesday, September 25, 2012 7:55 PM 
tank numbering h2ochem 1 5833 Sunday, June 26, 2011 1:22 PM 
Precipitation in bulk storage tank for sodium hypochlorite? GSain 3 9992 Sunday, November 13, 2011 11:00 PM 
salinity in activated sludge Greg Gress 2 4858 Thursday, June 14, 2012 5:21 AM 
VFD control of Mamoth Rotors in Oxidation Ditch Greg Gress 1 4102 Tuesday, November 22, 2011 3:30 PM 
Wastewater Blog Grant Weaver 5 10060 Monday, May 7, 2012 4:15 AM 
Digester Gas Piping GB Gehrke 6 11463 Wednesday, November 23, 2011 7:45 AM 
Septage/Grease Screening Units Frederick Auermuller 0 3648 Tuesday, January 3, 2012 3:51 PM 
High COD Results evik 1 6423 Thursday, February 24, 2011 9:13 AM 
FOG Causing Primary Clarifier Failures(5) Erwin Bonatz 1 1468 Sunday, May 20, 2012 11:25 AM 
FOG Causing Primary Clarifier Failures(4) Erwin Bonatz 0 916 Monday, May 14, 2012 10:44 AM 
FOG Causing Primary Clarifier Failures(2) Erwin Bonatz 0 953 Monday, May 14, 2012 10:38 AM 
MBR sludge condition Elizabeth Lawrence 4 6496 Tuesday, March 22, 2011 10:29 PM 
WWTP Opportunity - City of Kuna, ID DPFG 0 3676 Tuesday, September 4, 2012 12:17 PM 
transportation of dewatered alum sludge Doctor Sewage 0 7853 Monday, August 2, 2010 3:55 AM 
SCADA advice needed Dennis Hudson 4 8485 Thursday, October 28, 2010 3:54 PM 
Frozen tank Deerfield Wastewater 1 7138 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 8498 Monday, November 29, 2010 5:55 PM 
Toxicity of Sanitizers/Commercial Cleaners David Allen 0 3714 Thursday, November 10, 2011 5:01 PM 
Quaternary Ammonium Compounds David Allen 3 12357 Monday, July 11, 2011 3:05 PM 
chemical phosphorus removal using alum david 1 5678 Thursday, April 7, 2011 1:54 PM 
We have a terrible foaming problem in our aerobic digesters DarylP 1 1178 Friday, August 10, 2012 2:18 PM 
Filiment Problem (O21N) Can't pinpoint the cause...Help. Daniel Knox 0 1041 Tuesday, June 26, 2012 9:52 AM 
P.H. Problems D.Mak 6 9767 Wednesday, September 21, 2011 7:27 AM 
Pump Mixing Systems Anaerobic Digesters Christopher Morphey 0 6292 Tuesday, May 24, 2011 10:55 AM 
Primary clarifier chain Chris 4 8681 Sunday, November 13, 2011 11:02 PM 
Lost of pressure Chief 8 6242 Tuesday, March 15, 2011 7:02 AM 
reduction of flows cb 2 11213 Wednesday, January 27, 2010 9:24 AM 
High fecal coliform results Carmine Goneconte 7 10122 Sunday, November 13, 2011 10:59 PM 
Activated sludge process -WAS claculation Azmathulla Zaffrulla 2 12055 Sunday, April 3, 2011 6:07 AM 
Using Mag Hydroxide Andres Vinent 3 2693 Monday, June 25, 2012 1:17 PM 
Alkalinity control Andres Vinent 0 2903 Tuesday, February 21, 2012 3:51 PM 
aerobic-anoxic operation ale 0 7268 Sunday, November 14, 2010 2:04 AM 
Ozone for Fecal Coliform Reduction 17633991 0 1032 Sunday, April 14, 2013 6:36 PM 
pH of Mixed Liquor 17627563 0 2641 Monday, December 31, 2012 11:10 AM 
Isopropanol issues 01797999 1 4106 Tuesday, August 28, 2012 2:38 PM 
flow meter calibration - Requires reporting to the regulators? 01782191 0 3504 Wednesday, October 17, 2012 5:35 PM 
flow meter calibration - that is requires reporting to the regulators? 01782191 0 2207 Tuesday, October 16, 2012 9:55 PM 
Ferric Flow Meters? Is it a good idea?(2) 01780074 1 2083 Sunday, April 14, 2013 7:02 PM 
Alien Bugs(2) 01663302 0 3073 Monday, December 23, 2013 10:09 AM 
Oxidation ditch 01645290 0 3187 Thursday, November 29, 2012 10:24 AM 
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