WWTP Sodium Hypochlorite System
WWTP Sodium Hypochlorite System
(OP)
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
Thanks





RE: WWTP Sodium Hypochlorite System
RE: WWTP Sodium Hypochlorite System
RE: WWTP Sodium Hypochlorite System
The issue is well known to pump suppliers and hence we had to replace the pump head with one that included an automatic de-gassing head. A bleed line was then run back to the supply tank.
In the end it proved successful.
As for gassing down stream of the pump, thats another story.
RE: WWTP Sodium Hypochlorite System
In systems that I have designed and maintained, I try to keep the source as close to the addition point as possible. Try to introduce the NaOCl as neat product rather than using carrier water to reduce the chance of calcification in the distribution lines. I prefer to use peristaltic pumps in these applications when the design allows. Try to use a flooded suction on the pump whenever possible or pay very close attention to the NPSHr. Do not use any stainless steel in your design. Finally, consider the owner's NaOCl specifications; they should be very specific regarding contaminants, age of product and temperature.
RE: WWTP Sodium Hypochlorite System
( sales@clevelandcorrosion.com )
RE: WWTP Sodium Hypochlorite System