Will the peristaltic pump be wired into the SAME circuit as your pool pump and/or other equipment? If so, you will have to match the voltage to the existing circuit. Though some folks will split off from one leg of the 240 circuit to run a 120 receptacle or other fixture, that is illegal and unsafe. 240 and 120 items cannot share a circuit.
If you already have two separate circuits to your pool area (a 240 and a 120) then it is your choice of convenience, the peristaltic won't use much energy. My choice would be to wire it at the same voltage on the on the same circuit as my pool pump, after the timer/switch, in order to prevent it from injecting chlorine when the pool pump is off. However this setup may not be compatible with the timer features on the peristaltic pump (because if there is no power to the peri pump when the pool pump is off, the the peri pump timer won't run).
So, it depends... on what circuit(s) are present, what voltage your pump is at, what type of timer system you run for you rpool pump, what type of timer system the peri pump has, and whether you want it to operate independently of your pool pump, or only when it runs.
240 doesn't have to be hard wired. Your electrician can easily wire a 240V twist lok receptacle.