Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1998-10-01
2000-05-16
Simmons, David A.
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
252180, C02F 514
Patent
active
060632895
ABSTRACT:
The present invention is a process of treating aqueous systems to prevent precipitation of dissolved metal ion species, for example, Ca, Mg, Ba, Cu, Fe, Mn and Zn. This has the effect of preventing scale and/or stain formation. The process involves introducing 0.5 to 100 ppm of a synergistic mixture of HEDP and DETPMP into the water system to be treated.
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Failon Brian K.
Gabriel Robert G.
Albright & Wilson Americas Inc.
Lawrence Frank M.
Simmons David A.
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