The process of filtering the spent grain from the wort and sparge water is called wort separation.
From the en.wikipedia.org
New Belgium brewer Andrew Magdorn is checking the water level of sparge bath at the brewery on Friday.
From the denverpost.com
Most modern breweries use a continuous sparge, collecting the original wort and the sparge water together.
From the en.wikipedia.org
They will probably sparge the output steam, allowing it to condense in cool water and measuring the temperature rise.
From the forbes.com
More examples
Agitate by introducing air or compressed gas; "sparge the water"
Sprinkle: the act of sprinkling or splashing water; "baptized with a sprinkling of holy water"; "a sparge of warm water over the malt"
Sprinkle: scatter with liquid; wet lightly; "Sprinkle the lawn"
(Sparging (beer)) Lautering is a process in brewing beer in which the mash is separated into the clear liquid wort and the residual grain. Lautering usually consists of 3 steps: mashout, recirculation, and sparging.
(Sparging (chemistry)) In chemistry, sparging, also known as gas flushing in metallurgy, is a technique which involves bubbling a chemically inert gas, such as nitrogen, argon, or helium, through a liquid. This can be used to remove dissolved gases (e.g. oxygen) from the liquid.
(Sparging (vegetable oil)) Vegetable fats and oils are lipid materials derived from plants. Physically, oils are liquid at room temperature, and fats are solid. Chemically, both fats and oils are composed of triglycerides, as contrasted with waxes which lack glycerin in their structure. ...
To sprinkle or spray; To introduce bubbles into a liquid
(Sparging) (1) Rinsing the draff with hot water in the lauter tun in order to recover the sugar it holds. (2) The entire process of obtaining clear sweet wort from the mash, including runoff, recirculation, and rinsing.
(Sparging) is the act of draining water through the grain bed to try to extract additional sugars.