Recent content by rebuh72

Looking for operating feedback on mechanical seals for alum (used in water treatment); Is anyone aware of compatibility issues between the chemical and certain seal materials? I know that alum can crystallize under certain conditions, and may be a bit abrasive, which might also be a factor. Thanks

There is a good article in the July 2005 issue of Opflow (AWWA publication) on the startup of a large Florida system.

I'm just in the process of installing HDL ball check valves on the discharge of several primary sludge pumps (3-4% solids). Will let you know how it turns out.

Does anyone have experience with piping desing for sodium hypochlorite? I'm concerned about off-gassing in the pipe and was looking for creative solutions. Also, what coatings have people used for steel pipe in this service? Thanks

My question is the following: When calculating the static head on a progressive cavity pump, is it correct to take the difference between discharge and suction water levels (as with a centrifugal), or is the static head the difference between the pump centerline and the discharge water level...