Question for the Oil Field guys!!!

[paublo25]

Ok, I've asked a few friends but I've never gotten a straight answer. When your drilling on land and staying on site in the trailer, where does the sewer/black and grey water go? Is there some sort of portable treatment plant that is delivered and the removed once the work is finished? Also are there any lift stations (moves the sewer from the trailer to the treatment plant) on sight? I'm in the waste water business and have some questions as to how the whole process works for the "portable" work done in the oil field industry. Any information will be greatly appreciated.