Septic Waste

That weight is okay for liquid , sludge and build-up are little heavier ( paper , cooking oil , etc ) . If its bobtail tanker not a big issue , but the stuff you get from a sewage plant is ususally a mass of sludge with a heavier weight.

 

Never seen a tank over 2k gallons on a single drive axle truck.

 

Its gonna vary due to consistency, a thick crust and lots of gunk in the bottom will weigh different than one thats mostly water like after a heavy rain event when field lines have become saturated and are back dumping into tank .

 

Yep , used to take the small trucks out , pump out the tanks and such , bring it back to yard , pump it off into the big truck and empty it at sewage plant once a week .
Paid the bills , smelled awful but paid above average. Back in 91

 

The weight would be 15,000 lbs in a 1800 gal tank roughly . Most of them pump trucks have a waste tank and a replacement tank for wash downs and refills ( like for portapottys)

 

You are right, but if the effluent has a lot of solids and sludge, then add 10%, this seems to be the average, even if the sludge and solids are macerated.

 

Wasn't a bad gig , worst part was the smell and clogs, but had bennys and not that hard. Easy to learn and do and not many people screwed with you. ( wonder why ??
Hahahaha . )

 

Never out of a septic tank, hauled plenty of waste water In tanks and sludge in dump trailers though, absolutely sucks, especially in the winter