Hi — I don't remember where I heard it from, but a great alternative to bleach for stripping diapers is washing in machine with only dish detergent. (greenbabyguide.com)
You can also strip diapers by putting them through many hot washes in your washing machine, but without detergent. (clothdiapergeek.com)
Whatever you do, do NOT try to strip your diapers with that recipe! (gentlediapering.com)