24" Emergency Pressure Relief Valve on Anerobic Digester

Water Environment Federation (WEF) Discussion Forums

Home

Welcome Guest ( Login | Register )

Recent Posts

Popular Topics

Home » Archives » Archived Forum Topics » Safety & Health » 24" Emergency Pressure Relief Valve on...

24" Emergency Pressure Relief Valve on...

Expand / Collapse

Author

Message

Posted 5/29/2007 12:26:51 PM

Forum Newbie

Group: Forum Members
Last Login: 12/19/2007 10:53:59 AM
Posts: 6, Visits: 42

From time to time anaerobic digesters with concrete roofs build up pressure and the roof is damaged when the pressure is relieved. Our digesters have two 6 inch pressure-vacuum relief valves on them. Sometimes operators overfill the digesters and plug up the flame traps under the relief valves. This allows pressure to build up cracking the roofs, blowing off access covers and lifting the roof to allow sludge to escape between the wall and the roof.

Groth and Varec make a 24" hinged manway that is weighted so it lifts and releases the sludge or gas that is pushing on it. It is called an emergency Pressure Relief Valve. I know a 24" opening will not plug.

Is anyone using these on concrete anaerobic digester roofs?

Posted 5/30/2007 1:11:11 PM

Supreme Being

Group: Forum Members
Last Login: 9/29/2008 9:11:07 PM
Posts: 372, Visits: 758

Your message needs to be posted in "Biosolids and Solids"

David

Posted 6/1/2007 12:07:18 PM

Forum Newbie

Group: Forum Members
Last Login: 12/19/2007 10:53:59 AM
Posts: 6, Visits: 42

Thanks! I will try over there.

Charlie W

Posted 6/3/2007 6:02:49 PM

Supreme Being

Group: Forum Members
Last Login: Yesterday @ 3:07:28 PM
Posts: 580, Visits: 1,530

It looks like a sales pitch.

Posted 6/13/2007 6:35:27 PM

Forum Newbie

Group: Forum Members
Last Login: 12/19/2007 10:53:59 AM
Posts: 6, Visits: 42

It is not a sales pitch.

Posted 6/14/2007 1:55:27 PM

Supreme Being

Group: Forum Members
Last Login: 9/29/2008 9:11:07 PM
Posts: 372, Visits: 758

Sometimes you have to take Jerry with a grain of salt. He's always suspicious of anyone who has anaerobic digesters.

David

Posted 11/1/2007 6:59:01 PM

Forum Guru

Group: Forum Members
Last Login: 9/25/2008 10:19:19 AM
Posts: 50, Visits: 52

You need to have a talk with the operators. Have any of them experienced a anerobic digester go off after sucking in O2 from neglect or????

« Prev Topic | Next Topic »

Reading This Topic

Expand / Collapse

Active Users: 1 (1 guest, 0 members, 0 anonymous members)

No members currently viewing this topic.

Permissions

Expand / Collapse

All times are GMT -5:00, Time now is 8:48pm

Powered By InstantForum.NET v4.0.0 © 2008
Execution: 0.141. 10 queries. Compression Enabled.