Pre-1.0 I had aluminum factories that took the waste water from aluminum scrap and fed it back to the alumina solution refineries. However, in my new 1.0 world I can't seem to get it to flow correctly.

I've tried several solutions, including:

• putting the waste water lower in the junction than the fresh water
• adding a valve to the waste water to prevent backflow
• adding a valve to the waste water to only supply the amount not provided by the fresh water

The only think I have not done yet is decrease the water extractor rates, mostly because I don't recall having to do that before when I used a valve.

Any tips? Anyone else had success in 1.0

Update: I believe I may have found a solution - I've added a fluid buffer just after the waste and fresh water merge.

waste       fresh
    \      /
     buffer
        | 
     refinery

This seems to give the pipeline a little wiggle room to settle, whereas without the buffer the fresh water would slowly fill in whenever the waste water wasn't at full production. The waste water would then back up, which meant production of aluminum scrap would back up, which meant that alumina solution would back up, and then meant the water would back up leading to a sort of deadlock With the buffer there's a little more wiggle room in the pipeline for excess water