It's not something this visualises well. Basically it's described that purifier takes all the energy from a esper, purifies it, and then gives it back, apparently a pretty easy process since the energy is flowing that was naturally. Woojin basically takes the energy, stops it flowing back and then disperses it, which is what caused the wave of energy.
It's actually cooler in the novel bc the wave of energy doesn't do any damage, and he's the only one that doesn't hit the deck lol. ML is standing next to him in the novel and like stands in front of him and Woojin is just a bit confused.
They've changed a lot of stuff to make it more visual. The ML didn't a have a sword in the novel... he also just destroys people without lifting a finger by using soundwaves.

I know MC is Super Guide but I didn't expect he can kill Esper like by snaping fingers.