pump selection for "oily" and "separated" water
pump selection for "oily" and "separated" water
(OP)
Dear colleagues,
i want to select the suitable pump for "oily water" and "separated water" application. i think the best selection is "progressive cavity pump". in similar project they use "VS4" type for this application! but my concern is the price of this type of pump.
coud you please advise me wich pump is more expencive? and whice one do you recommend?
1- gear pumps
2- vertical VS4 type pump
3- progressive cavity pump
thanks in advance.
i want to select the suitable pump for "oily water" and "separated water" application. i think the best selection is "progressive cavity pump". in similar project they use "VS4" type for this application! but my concern is the price of this type of pump.
coud you please advise me wich pump is more expencive? and whice one do you recommend?
1- gear pumps
2- vertical VS4 type pump
3- progressive cavity pump
thanks in advance.





RE: pump selection for "oily" and "separated" water
RE: pump selection for "oily" and "separated" water
However, a similar question was recently posted on this forum and may assist you.
http://www.eng-tips.com/viewthread.cfm?qid=333207
RE: pump selection for "oily" and "separated" water
A similar query was recently made for this type of application. Maybe it will answer your questions:
http://www.eng-tips.com/viewthread.cfm?qid=333207
RE: pump selection for "oily" and "separated" water
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: pump selection for "oily" and "separated" water
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: pump selection for "oily" and "separated" water
Is it water separated from the oily water which mean with very-very low oil content-- then centrifugal pump VS4 can be used and would be the most economical..
If you are pumping oily water to the "'separator" than PC pump will be the better choice for low shear making the separation of oil and water in the separator more effective.
RE: pump selection for "oily" and "separated" water
to pumponly:
dear,we have a water separator sump that all washing liquid frome our equipment collect on it. this liquid may contain some small solids and swedge. then the oil of this liquid separate in one side of sump and remain water collect in other side. now we want to select the suitable pump for these two liquid type.
could you please help me to select the economical pump? VS4 or progressive cavity or other type?
RE: pump selection for "oily" and "separated" water
If you want to build a dry pit next to the sump, then your best option is a screw pump. The screw / centrifugal impeller pump with its open channel impeller design combines the gentle action of a screw pump and the high flow rates and cost efficiencies of a centrifugal pump. Most skimmers use screw pumps because the pumps will not form an emulsion, are tolerant of debris, do not require priming, and will handle viscous oil.
http://www.environmental-expert.com/products/trito...
http://www.hidrostal.co.uk/default.aspx?p=screwce
The PC pump will be more costly and will have higher maintenance costs with little or no benefit.
RE: pump selection for "oily" and "separated" water
Also based on your last application descrition, it seems that this pump would only be handling runoff. Again. VS4 should be fine 99.9% of the time even with some solids.
If this is crude oil and not machine oil, id watch for H2S content as well.
RE: pump selection for "oily" and "separated" water
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: pump selection for "oily" and "separated" water
thanks
RE: pump selection for "oily" and "separated" water
I will choose PC pump for the oil and VS4 for the water.
PC pumps are also available in vertical arrangement for installing in a sump.
ApplicationENG
VS4 is also a centrifugal pump.
RE: pump selection for "oily" and "separated" water
RE: pump selection for "oily" and "separated" water
in our same project, they select the pumps same as your idea. gear type for oil and vs4 for water. :) thanks for your help
RE: pump selection for "oily" and "separated" water
RE: pump selection for "oily" and "separated" water
RE: pump selection for "oily" and "separated" water