first mistake

OK, so i've run the first roll of film - Ilford XP2 Super - through my Yashica... and i've already made my first mistake, a minor one and really no big deal, yet to me it's a mistake. i want to develop B+W film and what do i get. i get a B+W film that you have to develop as a colour film - C-41 - perfect! i haven't got the necessary chemicals yet, so the problem isn't overwhelming, it's just, i'll be developing at home and i'm also concerned about our environment and i don't want to use any unnecessary chemicals... yadda yadda yadda! and i really didn't think of the issue of "Where Do I Dispose Of The Chemicals?", you can't just pour them down the drain. however there are some B+W chemicals you can pour down the drain and that's what i had in mind i was going to use, that is until i found out i got the "wrong" kind of film. of course i could try to develop the Ilford XP2 Super in B+W developer and see how it turns out, maybe i'll just go ahead and do that.

anyway, if anyone is interested in Ilford XP2 Super 120 films then i have plenty (eight left), and maybe you want to take some of them off my hand or maybe you have some 120 B+W film and you want to trade?!

of course i can always get them developed at a lab, it just seems completely silly when i'll be developing my own, it's just i don't want to get two sets of different chemicals just because i got that one pack of Ilford XP2 Super.

any advice or ideas are very welcome :-)