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 15079 Sunday, April 11, 2010 2:01 PM 
managing activated sludge system during food shortage John Wang 2 8004 Wednesday, July 6, 2011 9:24 AM 
envirofilt JK 0 3633 Sunday, December 11, 2011 6:52 PM 
aerobic digester-very high solids-odor problem jim 4 11996 Sunday, May 16, 2010 5:13 PM 
SBR Omniflow Jerry 0 7723 Thursday, August 26, 2010 3:34 PM 
floating sludge problem JC 1 9972 Saturday, April 24, 2010 6:42 PM 
Mercury Control Jason Graham 0 3717 Tuesday, November 29, 2011 2:09 PM 
Flow verification James Royer 2 8047 Monday, October 25, 2010 12:34 PM 
Determining the settlement tank's volume Hajar 0 3718 Tuesday, September 25, 2012 7:55 PM 
tank numbering h2ochem 1 5773 Sunday, June 26, 2011 1:22 PM 
Precipitation in bulk storage tank for sodium hypochlorite? GSain 3 9907 Sunday, November 13, 2011 11:00 PM 
salinity in activated sludge Greg Gress 2 4810 Thursday, June 14, 2012 5:21 AM 
VFD control of Mamoth Rotors in Oxidation Ditch Greg Gress 1 4020 Tuesday, November 22, 2011 3:30 PM 
Wastewater Blog Grant Weaver 5 9971 Monday, May 7, 2012 4:15 AM 
Digester Gas Piping GB Gehrke 6 11405 Wednesday, November 23, 2011 7:45 AM 
Septage/Grease Screening Units Frederick Auermuller 0 3618 Tuesday, January 3, 2012 3:51 PM 
High COD Results evik 1 6361 Thursday, February 24, 2011 9:13 AM 
FOG Causing Primary Clarifier Failures(5) Erwin Bonatz 1 1400 Sunday, May 20, 2012 11:25 AM 
FOG Causing Primary Clarifier Failures(4) Erwin Bonatz 0 860 Monday, May 14, 2012 10:44 AM 
FOG Causing Primary Clarifier Failures(2) Erwin Bonatz 0 869 Monday, May 14, 2012 10:38 AM 
MBR sludge condition Elizabeth Lawrence 4 6452 Tuesday, March 22, 2011 10:29 PM 
WWTP Opportunity - City of Kuna, ID DPFG 0 3584 Tuesday, September 4, 2012 12:17 PM 
transportation of dewatered alum sludge Doctor Sewage 0 7837 Monday, August 2, 2010 3:55 AM 
SCADA advice needed Dennis Hudson 4 8420 Thursday, October 28, 2010 3:54 PM 
Frozen tank Deerfield Wastewater 1 7128 Sunday, November 13, 2011 11:01 PM 
color codes for equipment and pipes deepleveltrash 1 10064 Wednesday, March 31, 2010 4:38 PM 
very low SVIs!! Deb 5 8433 Monday, November 29, 2010 5:55 PM 
Toxicity of Sanitizers/Commercial Cleaners David Allen 0 3682 Thursday, November 10, 2011 5:01 PM 
Quaternary Ammonium Compounds David Allen 3 12309 Monday, July 11, 2011 3:05 PM 
chemical phosphorus removal using alum david 1 5576 Thursday, April 7, 2011 1:54 PM 
We have a terrible foaming problem in our aerobic digesters DarylP 1 1103 Friday, August 10, 2012 2:18 PM 
Filiment Problem (O21N) Can't pinpoint the cause...Help. Daniel Knox 0 963 Tuesday, June 26, 2012 9:52 AM 
P.H. Problems D.Mak 6 9746 Wednesday, September 21, 2011 7:27 AM 
Pump Mixing Systems Anaerobic Digesters Christopher Morphey 0 6228 Tuesday, May 24, 2011 10:55 AM 
Primary clarifier chain Chris 4 8564 Sunday, November 13, 2011 11:02 PM 
Lost of pressure Chief 8 6169 Tuesday, March 15, 2011 7:02 AM 
reduction of flows cb 2 11081 Wednesday, January 27, 2010 9:24 AM 
High fecal coliform results Carmine Goneconte 7 10046 Sunday, November 13, 2011 10:59 PM 
Activated sludge process -WAS claculation Azmathulla Zaffrulla 2 12003 Sunday, April 3, 2011 6:07 AM 
Using Mag Hydroxide Andres Vinent 3 2572 Monday, June 25, 2012 1:17 PM 
Alkalinity control Andres Vinent 0 2819 Tuesday, February 21, 2012 3:51 PM 
aerobic-anoxic operation ale 0 7188 Sunday, November 14, 2010 2:04 AM 
Ozone for Fecal Coliform Reduction 17633991 0 966 Sunday, April 14, 2013 6:36 PM 
pH of Mixed Liquor 17627563 0 2586 Monday, December 31, 2012 11:10 AM 
Isopropanol issues 01797999 1 4044 Tuesday, August 28, 2012 2:38 PM 
flow meter calibration - Requires reporting to the regulators? 01782191 0 3424 Wednesday, October 17, 2012 5:35 PM 
flow meter calibration - that is requires reporting to the regulators? 01782191 0 2149 Tuesday, October 16, 2012 9:55 PM 
Ferric Flow Meters? Is it a good idea?(2) 01780074 1 2038 Sunday, April 14, 2013 7:02 PM 
Alien Bugs(2) 01663302 0 1406 Monday, December 23, 2013 10:09 AM 
Oxidation ditch 01645290 0 3105 Thursday, November 29, 2012 10:24 AM 
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