Method of pretreating raw water for reverse osmosis units

Details Method of pretreating raw water for reverse osmosis units Method of pretreating raw water for reverse osmosis units

1980-05-19

1981-04-14

Therkorn, Ernest G.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210652, 210711, 210787, 210806, C02F 144, C02F 152

Patent

active

042618339

ABSTRACT:
A method of pretreating raw water, for instance sea water, which is intended for supplying reverse osmosis units. An aqueous solution of acid salt and acid with the same anions is mixed with the raw water, whereby the most advantageous pH value is adjusted for the reverse osmosis, and whereby the acid salt is converted into the corresponding hydroxide. After possible addition of flocking or flaking additives, the resulting hydroxide flakes are separated, in a strongly concentrated form, by way of a centrifuge, particularly a plate or disc centrifuge, and together with fresh metal salt, are again brought into solution as a salt by means of the previously mentioned acid and, after mechanical purification in a second centrifuge, likewise particularly a plate or disc centrifuge, are again supplied to the raw water. The pretreated raw water leaves under pressure from the separator through which it flows and, alternatively, a chemical reducing agent may be added to this departing water flow. With a small requirement for metal salts, the recirculation can be eliminated. Also, the addition of the reducing agent to the pretreated raw water can be eliminated.

REFERENCES:
patent: B524806 (1976-03-01), Ladha
patent: 4014787 (1977-03-01), Shorr
patent: 4036749 (1977-07-01), Anderson
patent: 4170328 (1979-10-01), Kirk
patent: 4188291 (1980-02-01), Anderson

Affiliated with

Also associated with

Rating

Method of pretreating raw water for reverse osmosis units does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of pretreating raw water for reverse osmosis units, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of pretreating raw water for reverse osmosis units will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-157670