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 13659 Sunday, November 13, 2011 11:03 PM 
Seasonal MLSS adjustment Joseph McDowell 2 17262 Sunday, April 11, 2010 2:01 PM 
managing activated sludge system during food shortage John Wang 2 10158 Wednesday, July 6, 2011 9:24 AM 
envirofilt JK 0 6211 Sunday, December 11, 2011 6:52 PM 
aerobic digester-very high solids-odor problem jim 4 14221 Sunday, May 16, 2010 5:13 PM 
SBR Omniflow Jerry 0 9714 Thursday, August 26, 2010 3:34 PM 
floating sludge problem JC 1 11926 Saturday, April 24, 2010 6:42 PM 
Mercury Control Jason Graham 0 6265 Tuesday, November 29, 2011 2:09 PM 
Flow verification James Royer 2 10166 Monday, October 25, 2010 12:34 PM 
Determining the settlement tank's volume Hajar 0 6070 Tuesday, September 25, 2012 7:55 PM 
tank numbering h2ochem 1 7777 Sunday, June 26, 2011 1:22 PM 
Precipitation in bulk storage tank for sodium hypochlorite? GSain 3 10600 Sunday, November 13, 2011 11:00 PM 
salinity in activated sludge Greg Gress 2 8109 Thursday, June 14, 2012 5:21 AM 
VFD control of Mamoth Rotors in Oxidation Ditch Greg Gress 1 6524 Tuesday, November 22, 2011 3:30 PM 
Wastewater Blog Grant Weaver 5 13291 Monday, May 7, 2012 4:15 AM 
Digester Gas Piping GB Gehrke 6 12256 Wednesday, November 23, 2011 7:45 AM 
Septage/Grease Screening Units Frederick Auermuller 0 6041 Tuesday, January 3, 2012 3:51 PM 
High COD Results evik 1 8358 Thursday, February 24, 2011 9:13 AM 
FOG Causing Primary Clarifier Failures(5) Erwin Bonatz 1 2182 Sunday, May 20, 2012 11:25 AM 
FOG Causing Primary Clarifier Failures(4) Erwin Bonatz 0 3324 Monday, May 14, 2012 10:44 AM 
FOG Causing Primary Clarifier Failures(2) Erwin Bonatz 0 3346 Monday, May 14, 2012 10:38 AM 
MBR sludge condition Elizabeth Lawrence 4 8526 Tuesday, March 22, 2011 10:29 PM 
Decanting solds & scum Dwayne 1 9567 Friday, June 19, 2015 6:28 AM 
WWTP Opportunity - City of Kuna, ID DPFG 0 6131 Tuesday, September 4, 2012 12:17 PM 
transportation of dewatered alum sludge Doctor Sewage 0 9768 Monday, August 2, 2010 3:55 AM 
SCADA advice needed Dennis Hudson 4 10493 Thursday, October 28, 2010 3:54 PM 
Frozen tank Deerfield Wastewater 1 9216 Sunday, November 13, 2011 11:01 PM 
color codes for equipment and pipes deepleveltrash 1 12236 Wednesday, March 31, 2010 4:38 PM 
very low SVIs!! Deb 5 10451 Monday, November 29, 2010 5:55 PM 
Toxicity of Sanitizers/Commercial Cleaners David Allen 0 5820 Thursday, November 10, 2011 5:01 PM 
Quaternary Ammonium Compounds David Allen 3 14565 Monday, July 11, 2011 3:05 PM 
chemical phosphorus removal using alum david 1 7643 Thursday, April 7, 2011 1:54 PM 
We have a terrible foaming problem in our aerobic digesters DarylP 1 3595 Friday, August 10, 2012 2:18 PM 
Filiment Problem (O21N) Can't pinpoint the cause...Help. Daniel Knox 0 3406 Tuesday, June 26, 2012 9:52 AM 
P.H. Problems D.Mak 6 11973 Wednesday, September 21, 2011 7:27 AM 
BNR Internal Recycle Cooper 0 11536 Wednesday, January 28, 2015 8:27 PM 
Pump Mixing Systems Anaerobic Digesters Christopher Morphey 0 8356 Tuesday, May 24, 2011 10:55 AM 
Primary clarifier chain Chris 4 10929 Sunday, November 13, 2011 11:02 PM 
Lost of pressure Chief 8 8130 Tuesday, March 15, 2011 7:02 AM 
reduction of flows cb 2 13214 Wednesday, January 27, 2010 9:24 AM 
High fecal coliform results Carmine Goneconte 7 13053 Sunday, November 13, 2011 10:59 PM 
Activated sludge process -WAS claculation Azmathulla Zaffrulla 2 14185 Sunday, April 3, 2011 6:07 AM 
Using Mag Hydroxide Andres Vinent 3 3289 Monday, June 25, 2012 1:17 PM 
Alkalinity control Andres Vinent 0 5525 Tuesday, February 21, 2012 3:51 PM 
aerobic-anoxic operation ale 0 11275 Sunday, November 14, 2010 2:04 AM 
Ozone for Fecal Coliform Reduction 17633991 0 3453 Sunday, April 14, 2013 6:36 PM 
pH of Mixed Liquor 17627563 0 3309 Monday, December 31, 2012 11:10 AM 
Isopropanol issues 01797999 1 6491 Tuesday, August 28, 2012 2:38 PM 
flow meter calibration - Requires reporting to the regulators? 01782191 0 5835 Wednesday, October 17, 2012 5:35 PM 
flow meter calibration - that is requires reporting to the regulators? 01782191 0 4510 Tuesday, October 16, 2012 9:55 PM 
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