I work in a large water treatment facility. Chlorine is added after ozone quench/depletion. Periodically chlorine feed is disrupted. The disruption is characterized by instant loss of vacuum to chlorinator. The loss of vacuum is instantaneous and system immediately starts to recharge vacuum in...
I am still trying to find the size of wire inside armored cable,
Difference in distance of travel for wire Probably no more than 50 feet.
Failure for last repair was at point of connection at motor, Could have been bad connection/insulation for install.
Thanks for your input. I hoped that if...
First off I know nothing about electrical engineering so please (yes and no) answers or explain as if I were 5 years old.
I work at a water pumping facility that has had a lot of trouble with 1 pump that has been offline for 3+ years.
Basic information 1. 200HP 20MGD low lift submersible...
http://www.phippsbird.com/pbinc/WaterWasteWater/TechnicalLibrary.aspx
Is also a good source for jar test information. Jar tests are best when scaled to plant conditions such as detention and velocity. I have found several WTP that had choke points in treatment that destroyed flocc and rendered...
Tipp79 here are a few other things to consider for carrier water. Carrier water is great for acids but if there is any hardness in water a base will precipitate hardness then coat and plug lines. If you are using liquid Aluminum Sulfate and many other coagulants it will affect coagulation. I...
I have been reviewing the plans for our system. The pressure tank is offset on a tee and not in or over any direct line of flow. Ours also has a air compressor to maintain the level.
I have operated several systems that have hydro-pneumatic tanks and never had one that would add air to discharge. The only way I could see this happening would be if there was too much air in the tank. The very large one I work with now has a glass tube on it to gauge water level. I would try...
At a couple of plants I worked at we had used pressurized air to raise silt so raw water pumps would remove from wet well. We then isolated the flocculator basin and the flow was then diverted to the drain of the flocculator and sent to sludge processing. A couple of galvanized steel sections of...
I appreciate both answers (BIMR and BIGINCH) and I believe both are valid as stated. Please consider that as I understand a venturi it is assumed that there is force/pressure before the restriction and the second port level is the remaining level effected by the velocity. (If there is no flow...
I work at a surface water plant that was taken from 4gpm/ft.2/min to 6gpm/ft.2/min. The engineer neglected to increase size of openings at end of flocculators and in the baffle walls at beginning of sedimentation basins. We have a high seasonal shift in demand so during low flow in winter all...
I have noticed that the gravity flow filters in our water treatment plant have been allowed to run off the scale on loss-of-head gauges and I am wondering if a venturi is accurate if the flow is actually being pulled by vacuum (or very little head)rather than a pressure flow. If it does cause...
