Yeah, mine was about 1:10 acid to water. I then diluted it (all told, around 80 gallons) with a giant bag of baking soda from BJ's. Then, after a few hours, I dropped the hose in there and let it slowly overflow into the back yard for another few hours. Then I just dumped the whole thing. No ill effects.
If you're doing it on a smaller scale (assuming it's diluted with water to begin with), I'd just dump in some baking soda, let it circulate, then down the drain with water flowing.