I no longer have any septum left in my nose. Can it still be repaired?

I no longer have any septum left due to my cocaine addiction. I have since gone to rehab but now need to address the issue of my nose. I have a very bad infection as well. What’s left of my nostrils scab up and I usually pick at it and cause me excruciating pain. The interior of my nose has also started to harden, which I thought was scabbing, so I tried to pick it and it won’t come out. It acts more like tar. It is also black in color. Can my nose be repaired?