Liquid Jet Liquid Pumps, also called eductors, employ a liquid, very often water, as the motive medium to entrain another liquid which it intimately mixed with the motive stream. These GEA Wiegand pumps can be used for simple duties, like lifting rainwater/spillage from tank bunds, or more specific dilution duties, where a concentrate is drawn into the unit, dilluted to an exact degree by a specifically sized motive water flow, then conveyed to the process or a holding tank. They are also regularly used on dosing duties, either in-line, or in-tank, via a by-pass loop.
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Applications:
Liquid jet liquid pumps are used for conveying and mixing liquids such as water, acids or lyes in water and waste water treatment plants.
An important range of application is for the dilution of acids or lyes to a definite final concentration such as is required in water treatment plants.
The ion exchangers at times have to be regenerated with acid (cation exchanger) or caustic (anion exchanger). The liquid jet-liquid pumps suck in the concentrated acid or lye and convey it into the exchangers at the respectively required mixing ratio.