So.. my city allows me and requires that I send my backflushed DE / pool water through my main drain out to the city sewer line. What I'm looking for is a way to collect the DE so it can be disposed of separately, rather than sending all that solid material through my 64 year old house main line. I've seen those DE collection socks that are sold on Amazon, but I'm not sure how good they work. I saw on another site where someone said to use a pillowcase tied on the end of your discharge hose. I tried that and it didn't work that great. It took about 30 seconds before the DE clogged up the pillow case and caused it to blow up like a balloon. I've also allegedly blackflushed into the street sewer line, but that left a white powdery trail that went about 800ft from the sewer back to my house... lol. I'd rather not get fined.
So.. what do you guys think?