high pressure + high TDS = corossion ?
high pressure + high TDS = corossion ?
(OP)
Hi folks,
Given:
Pumping water
TDH - 286 m
flow - 300 lps
water quality (concentration of dissolved solids - high)
ph - ?
concentration of CO2 - ?
temp - 18 - 28C
pipe material - concrete lined DI
Wanted:
rate at which my pipes are going to lose cross sectional area
Have any of you done such a calculation, or can you indicate a reference. I checked AWWA and a 2010 pump handbook and have come here next. By the way, it's a site in East Africa. Thx.
Given:
Pumping water
TDH - 286 m
flow - 300 lps
water quality (concentration of dissolved solids - high)
ph - ?
concentration of CO2 - ?
temp - 18 - 28C
pipe material - concrete lined DI
Wanted:
rate at which my pipes are going to lose cross sectional area
Have any of you done such a calculation, or can you indicate a reference. I checked AWWA and a 2010 pump handbook and have come here next. By the way, it's a site in East Africa. Thx.





RE: high pressure + high TDS = corossion ?
Generally velocities below 10 fps will be on the safe side of erosion limits and erosion rates would normally not even need to be calculated.
Velocities much higher than that for pipelines of any significant length may have too much of a power cost to be economical anyway.
RE: high pressure + high TDS = corossion ?
Patricia Lougheed
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RE: high pressure + high TDS = corossion ?
if my first year chemistry comes back to life, i recall that under increasing pressure dissolved calcium products precipitate out of solution. i have a groundwater with high concentration of calcium products and want to see at what concentration and duration the calcification of the pipe becomes too costly.