Ejector

Ejector: A device used to inject a chemical solution into wastewater during water treatment.

Ejector
A device used to disperse a chemical solution into water being treated.
Electro dialysis ...

pneumatic ejector
poikilothermic A cold-blooded organism (generally other than birds and mammals) whose body temperature varies approximately with the environment.
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See also: Environmental, Site, Phosphorus, Environment, Organism