I have been looking into specifying a coating system currently trademarked as LIQ Fusion 7000FBE. It states it is far superior to glass lined systems and field applied coating system like Hydroflon as provided by Tnemec. Does anyone have insight to the durability and performance of this...
Existing duplex, pitless water booster station serves 52 homes. Incoming transmission pipe is 6" PVC and serves about 3 homes along it. Piping thru pump house is 3-inch. Distribution piping consists of 6" PVC loops water mains that fills a stand pipe with dimensions of 14' and 110' tall. See...
We just completed this project last December. It was a fun and unique project. The Aeralater unit (removes iron and manganese) began to leak from the steel base plate about 3 years ago at a rate less than 1 gpm. The tank leaked as much as 30 gpm or about 20% of daily need prior to this...
We just installed at PRV Station #2 a 1-1/2" Cla-Val Model 990 with a label of 80-140 psi on it - that caught my attention because I needed the other one with an adjustment range of 30-90 psi as my outlet pressure required is 40 psi.
This put me in a bit of a panic, so I ran down to the site...
We just installed at PRV Station #2 a 1-1/2" direct acting pressure reducing valve with a label of 80-140 psi on it - that caught my attention because I needed the other one with an adjustment range of 30-90 psi as my outlet pressure required is 40 psi.
This put me in a bit of a panic, so I...
there is an existing subdivision road (undeveloped yet) that has settled alot due to lack of compaction of the sewer main backfill. this has called for its replacement prior to any homes being built. so the existing road should have been 6" ac over 6" limestone, however it was constructed...
We are designing a new lift station, forcemain, and a 2-cell, 358-day controlled discharging facultative lagoon with the primary depth 6' total (4' working) and the secondary depth 8' total (6'working). Each cell is 8-acres. Located in Nebraska, USA latitude 42-degrees pretty cold winters...
I just watched the Shecklock Holmes movie, but it is not helping me figure this one out like I expected it would.
The attached photos are specimens of the inside pipe walls of a variable grade sewer system (built in 1993). In some parts of the sewer line it completely blocked the pipe and...
This is a spin off of my last thread in the Pump Engineering Forum "Non-clog low flow high head pump." My original question was to find a pump that could perform at 314' TDH and 170 gpm flow. So this is my follow up question.
Why don't pump engineers/mfg's design a multi impeller non-clog...
I need some help finding a pump (or other method of conveyance) that can pump sewage at approximately 170 gpm and 314' TDH, efficiently. We have thought of two pumps in series and two lift stations, but that seems that it would be an operator's nightmare. The operating point is peak wet...
These tutorials have been helpful to me especially presenting graphs in reports - so I am posting this website to share...
http://www.datapigtechnologies.com/
We are designing a new booster transfer station and a new precast concrete pump house. How do you build a concrete foundation on top of rock? Do you drill and set rebar into the rock, then make your concrete forms and pour the concrete? Or can you simply make the forms. The weight of the...
Civil-Water
Wow the wait was dreadful. I had total confidence after I took the exam, but the confidence decayed over time to almost 0 when I finally receieved the results today. I won't get my license for another 12 weeks or so, but am I correct in thinking that the sky is the limit for job...
Ok. Lift station grinder pump. So does the pump tell to motor how much to work or does the motor say "I'm only going to give you what I'm made for!"
I think that the pump dictates the motor how hard to work, but don't exactly why.
Q: What would cause the pump to pump more flow at a lower...
Has anyone experienced modifying water storage tanks while keeping thier capacities under normal conditions (can't loose storage during fixes).
I have heard of scuba guys diving inside the tank and doing the fixes.
Some modifications may be tapping a new fitting into the side of the tank and...
Good day everyone:
I need some suggestions please. A well has a high concentration (above MCL) of PCE. What are some methods of removal - inparticularly air stripping is the method I am looking at. Where can I find this technology/vendors? The well produces 500 GPM.
Situation:
Current MCL Arsenic = 50 ppb
As of 01/23/2006 MCL Arsenic = 10 ppb
Individual well drilling
This is not regulated by the EPA when the water is an individual system, well with pump for example. Is it ethical to serve the individuals if the As level of their well is above 10 ppb...
most typically we install gravelless drainfield to treat individual homes. this home inparticular can not support a drain field...the soil is clay and will not allow permeation. an individual lagoon is very expensive...what other alternatives are there to avoid high cost and effectively treat...
The other option I have than a theodolite for horizontal layout of a pump, discharge head and a cone valve is a tape and a level. So I decided to use the theodolite (laser shot).
I was just curious on the accuracy of the stadia method given that the rod reads to the nearest one-hundredth of a...
