Nalgene has some accessories with quick disconnects that you might be able to use.
If you're looking for cheaper, you might try some hose clamps. I've seen them with a tab so you can tighten and loosen them by hand. I think they were in the automotive section at Walmart.
I personally use just one quick disconnect and that one only because my hydration bladder has a quick connect socket for the drinking tube, so it was the only way I could connect the filter to the bladder to fill it. It doesn't save a huge amount of time.
I do recommend you make your setup so you don't have to monitor it while it does its job. That's what really takes time.