High Head Low Flow WWTP Effluent
High Head Low Flow WWTP Effluent
(OP)
I'm confused on when a Turbine pump can be used. Its the only pump I've found that can handle the amount of head (500 ft) and flow I'm looking for. But I would be placing it in a more typical wet well for the effluent of a wwtp, not a water supply well. Is this ok? The wet well would end up being pretty deep. Would it be better to do a series of booster stations? It looks like this would require at least 5 booster stations, at least from the pumps I've found. Any help or info would be much appreciated. Thank you!





RE: High Head Low Flow WWTP Effluent
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: High Head Low Flow WWTP Effluent
RE: High Head Low Flow WWTP Effluent
RE: High Head Low Flow WWTP Effluent
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: High Head Low Flow WWTP Effluent
Regards
Ashtree
"Any water can be made potable if you filter it through enough money"
RE: High Head Low Flow WWTP Effluent
The vertical turbine will not be a complicated pump arrangement, unlike a system with multiple booster pumps.
RE: High Head Low Flow WWTP Effluent
RE: High Head Low Flow WWTP Effluent
In a deeper pump station , for a given volume there will be less % of total volume in that "unpumpable" portion of the well.
Maintenance access will be the likely decider of the minimum spacing between pumps. Likewise the pipe work configuration on the discharge particularly if the two pumps come together into a common tee will also be a decider on minimum distances apart. Ideally you would have not less than 6 feet or 2 metres to enable a decent space for working.
I am sure the pumps you have selected would be okay but they would also seem to be relatively complicated for the application. Have you considered submersible turbines?
Regards
Ashtree
"Any water can be made potable if you filter it through enough money"
RE: High Head Low Flow WWTP Effluent
RE: High Head Low Flow WWTP Effluent
You can mount the submersible horizontally near the bottom but this needs to be approached cautiously to avoid creating further maintenance issues.
The other option is to use a bottom intake submersible. These are rare but they are available.
It would seem that you have considered the submersible turbine option so your original solution may be most suitable.
Regards
Ashtree
"Any water can be made potable if you filter it through enough money"
RE: High Head Low Flow WWTP Effluent
It is a very straight and easy application - 10 minutes and it's all over.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: High Head Low Flow WWTP Effluent
There are suggestions in the Hydraulic Institute guidelines for sump sizing based on pump flows, start about page 4 in this document
http://turbolab.tamu.edu/proc/pumpproc/P16/P16161-...
RE: High Head Low Flow WWTP Effluent
Note that submersibles will have greater maintenance costs over the life of the pump system.