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| | | Forum Newbie
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Last Login: 10/15/2006 3:36:35 PM
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| | Any tricks to cleaning low flow inverted siphons? My system has 11 of them; half have very few residences on them, causing solids buildup. Jetting/checks must be done at least once a week, sometimes more. In addition to the solids, there is a grease build up. Any suggestions? |
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| | | Forum Newbie
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Last Login: 6/24/2008 3:50:40 AM
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| | Hello. I'm working with a similar case. We are considering different solutions; e.g. pumpes and flushing tanks. Maybe something like this is possible? |
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| | | Supreme Being
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Last Login: Today @ 11:18:18 AM
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| Any tricks to cleaning low flow inverted siphons? My system has 11 of them; half have
very few residences on them, causing solids buildup. Jetting/checks must be done at
least once a week, sometimes more. In addition to the solids, there is a grease build
up. Any suggestions?
What are the sewer pipe diameters in the siphons?
Grease buildup probably needs to be cleaned by dragging a ball through the section periodically, if flushing doesn't remove most of the material.
If the pipe diameters are not too large, perhaps you could use a water tanker with fairly large-sized discharge valve, and just flood the nearest up-hill manhole to an elevation sufficient to drive the settled solids out of the low point of the line. You may want to also momentarily plug the inlet to the "flushing manhole" during the flushing process so that you get maximum head behind the column of water in the manhole. That is pretty much what the regular cleaning units do (although I'm not sure then bother to plug the inlet to the manhole).
Jeff Naumann
(310) 540-0045
FAX (310) 540-0337
http://www.jeffnaumannassociates.com/ |
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| | | Supreme Being
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Last Login: Yesterday @ 3:53:50 PM
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| | Jeff is right. Just a word of caution on the plugging of the manhole though and you might already know this. If you use a pnematic plug it will need a release valve bought to the surface. You probably should plug the upstream side of the manhole downstream from the syphon because if you have them on the outlet of the downstream manhole they really go when you release the pressure. A rope on the plug won't hold it and the plug will reach light speed by the time it is at the downstream manhole. Plugging of the downstream manhole allows a more dignified release of the plug but it should still be roped and the valve bought to the surface. There are some industry published safety procedures on manhole plugging but i don't have a link. Regards TerryF |
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