Your hearing aids can be connected to a Bluetooth compatible PC and used to receive audio, and as a microphone input.
 

You just need to pair the hearing aids to the computer in the same way you would when connecting them to a smart phone—turn the hearing aids off and on again to put them into pairing mode, then search for new Bluetooth devices in the computer and pair the hearing aids when you find them. Only one hearing aid will show on the list of connected devices, but you will hear the audio in both ears.

Once the aids have been paired, you can then navigate to your computer’s sound settings. You will probably need to manually select the hearing aids as the output device. If you want to use the hearing aids as a microphone to pick up your own voice, then you will need to select the hearing aids as the input device as well.