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 15188 Sunday, November 13, 2011 11:03 PM 
Seasonal MLSS adjustment Joseph McDowell 2 18618 Sunday, April 11, 2010 2:01 PM 
managing activated sludge system during food shortage John Wang 2 11481 Wednesday, July 6, 2011 9:24 AM 
envirofilt JK 0 7650 Sunday, December 11, 2011 6:52 PM 
aerobic digester-very high solids-odor problem jim 4 15586 Sunday, May 16, 2010 5:13 PM 
SBR Omniflow Jerry 0 10948 Thursday, August 26, 2010 3:34 PM 
floating sludge problem JC 1 13113 Saturday, April 24, 2010 6:42 PM 
Mercury Control Jason Graham 0 7727 Tuesday, November 29, 2011 2:09 PM 
Flow verification James Royer 2 11651 Monday, October 25, 2010 12:34 PM 
Determining the settlement tank's volume Hajar 0 7504 Tuesday, September 25, 2012 7:55 PM 
tank numbering h2ochem 1 9038 Sunday, June 26, 2011 1:22 PM 
Precipitation in bulk storage tank for sodium hypochlorite? GSain 3 11961 Sunday, November 13, 2011 11:00 PM 
salinity in activated sludge Greg Gress 2 9792 Thursday, June 14, 2012 5:21 AM 
VFD control of Mamoth Rotors in Oxidation Ditch Greg Gress 1 8111 Tuesday, November 22, 2011 3:30 PM 
Wastewater Blog Grant Weaver 5 15698 Monday, May 7, 2012 4:15 AM 
Digester Gas Piping GB Gehrke 6 13964 Wednesday, November 23, 2011 7:45 AM 
Septage/Grease Screening Units Frederick Auermuller 0 7519 Tuesday, January 3, 2012 3:51 PM 
High COD Results evik 1 9625 Thursday, February 24, 2011 9:13 AM 
FOG Causing Primary Clarifier Failures(5) Erwin Bonatz 1 3607 Sunday, May 20, 2012 11:25 AM 
FOG Causing Primary Clarifier Failures(4) Erwin Bonatz 0 4852 Monday, May 14, 2012 10:44 AM 
FOG Causing Primary Clarifier Failures(2) Erwin Bonatz 0 4794 Monday, May 14, 2012 10:38 AM 
MBR sludge condition Elizabeth Lawrence 4 9878 Tuesday, March 22, 2011 10:29 PM 
Decanting solds & scum Dwayne 1 11213 Friday, June 19, 2015 6:28 AM 
WWTP Opportunity - City of Kuna, ID DPFG 0 7733 Tuesday, September 4, 2012 12:17 PM 
transportation of dewatered alum sludge Doctor Sewage 0 10962 Monday, August 2, 2010 3:55 AM 
SCADA advice needed Dennis Hudson 4 11824 Thursday, October 28, 2010 3:54 PM 
Frozen tank Deerfield Wastewater 1 10441 Sunday, November 13, 2011 11:01 PM 
color codes for equipment and pipes deepleveltrash 1 13950 Wednesday, March 31, 2010 4:38 PM 
very low SVIs!! Deb 5 11758 Monday, November 29, 2010 5:55 PM 
Toxicity of Sanitizers/Commercial Cleaners David Allen 0 7119 Thursday, November 10, 2011 5:01 PM 
Quaternary Ammonium Compounds David Allen 3 15854 Monday, July 11, 2011 3:05 PM 
chemical phosphorus removal using alum david 1 8887 Thursday, April 7, 2011 1:54 PM 
We have a terrible foaming problem in our aerobic digesters DarylP 1 5122 Friday, August 10, 2012 2:18 PM 
Filiment Problem (O21N) Can't pinpoint the cause...Help. Daniel Knox 0 4850 Tuesday, June 26, 2012 9:52 AM 
P.H. Problems D.Mak 6 13401 Wednesday, September 21, 2011 7:27 AM 
BNR Internal Recycle Cooper 0 13099 Wednesday, January 28, 2015 8:27 PM 
Pump Mixing Systems Anaerobic Digesters Christopher Morphey 0 9725 Tuesday, May 24, 2011 10:55 AM 
Primary clarifier chain Chris 4 12328 Sunday, November 13, 2011 11:02 PM 
Lost of pressure Chief 8 9427 Tuesday, March 15, 2011 7:02 AM 
reduction of flows cb 2 14419 Wednesday, January 27, 2010 9:24 AM 
High fecal coliform results Carmine Goneconte 7 14441 Sunday, November 13, 2011 10:59 PM 
Activated sludge process -WAS claculation Azmathulla Zaffrulla 2 15684 Sunday, April 3, 2011 6:07 AM 
Using Mag Hydroxide Andres Vinent 3 4742 Monday, June 25, 2012 1:17 PM 
Alkalinity control Andres Vinent 0 7089 Tuesday, February 21, 2012 3:51 PM 
aerobic-anoxic operation ale 0 13068 Sunday, November 14, 2010 2:04 AM 
Ozone for Fecal Coliform Reduction 17633991 0 4944 Sunday, April 14, 2013 6:36 PM 
pH of Mixed Liquor 17627563 0 4760 Monday, December 31, 2012 11:10 AM 
Isopropanol issues 01797999 1 7982 Tuesday, August 28, 2012 2:38 PM 
flow meter calibration - Requires reporting to the regulators? 01782191 0 7329 Wednesday, October 17, 2012 5:35 PM 
flow meter calibration - that is requires reporting to the regulators? 01782191 0 6043 Tuesday, October 16, 2012 9:55 PM 
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