Air Powered Pump to Remove Napthalene from Borehole?

Consider using a water-operated ejector instead. The suction pipe is placed down the hole and the water supply is connected to the motive fluid inlet.

• No moving parts!
• No non-metallic materials to expand!
• No flammable aerosols!

Mmm... Interesting idea. I am assuming you mean an eductor. I would have to separate the product from the (now contaminated) water afterwards, but not impossible.

Thanks

Look at these may solve you problem.

http://www.supavac.com/new/sv60.php

Not know exactly what you are facing, the Ex atmosphere requirement present, I have used a pump that is "trouble free" the proble is that your flow rate is very small. You really need a dosing pump. Contact "PIT BULL" and see if they have something you could use. www.pitbull.com

We have small pit bulls and if the product can get into the pump it will exit, viscous or not.

Hi Guest,

Have you considered a simple air lift. It has no moving parts and works by creating a column of the fluid to be lifted and bubbles of air. Given the very small quantity of fluid to be moved and the fact it is less dense than the water it floats on you should be able to bring a steady stream of both up to the surface where the water is returned and the napthalene separated by floatation. I would suggest that the rising main is no more than 1.5 inches bore and is submerged atleast 1m below the standing water level. The air supply will be via a small bore tube fixed to the outside of the rising main and connected to it about 150mm above the open end. By adjusting the quantity of air being admitteed you should be able to raise the water/napthalene mixture to the surface.

You will find the optimum depth/air rate by experimentation. The thing to avoid is any great amount of horizontal length above ground as this hampers the process.

Best wishes,

Massey.

GA in my oppinion. I'd suggest a vacuum eductor or a compressed air venturi. But, if the fluid height is not that big, I agree that a simple column with bubbles would suffice. Remember the old days when aquariums had undergravel biological filters with columns pumping water by a small compressed air? That's it. So simple and cheap that you must try before anything else, in my oppinion.

Oh! Irealized, 5 meters... Could you use that pipe inserted in the fluid down the bore, plug the bore inlet and pressurize it forcing the fluid up? Also simple and straightforward.