Washable furnace filter material cut to fit in the drain holes of my utility sink. You'd be surprised at how fast it plugs up with crap.
One thing you don't mention is if you're on septic or sewer. If I were on septic, I'd drain into a settling tank with a submersible pump raised above the bottom, or two tanks in series kind of like septic tank baffles with the pump in the second one. That, and loads of Rid-X and a tank pumping every few years. If your drain field sh!ts the bed, you're looking at some money. I found that out the hard way in my last house.