There is no way at this current point to really restore hearing. And cochlear implant is for "last-resort" purposes. They will only use that if you are absolutely deaf in both ears (or closed to it). What is your audiogram like? Moderate loss means you have around 40 dB loss. You probably have high frequency loss if it's due to noise trauma. You do not need a hearing aid if one ear is normal even though the other suffer some hearing loss.
Safeguard your hearing If your occupation is under loud noise, wear protection. Avoid going to loud places, parties, fireworks, concert, and even movies. Not to be bleak, but your hearing won't get any better. It can't repair itself. Good luck.