Not knowing the severity of his kidney failure, I can only offer possabilities...Parataneal dialysis is possible for "mild" failure. He would change his fluid in his intestine cavity for lack of a better description 2 or 3 times a day. Home dialysis machines I dont know much about but they are used. A Full blown hemo-dialysis machine is the size of an apartment refrigerator and not that complicated to use. Sterile conditions are another matter.
How do we even know he has kidney trouble? I know of no proof, just speculation.