Construction Vehicle Wash Facility using recycled wash water
Construction Vehicle Wash Facility using recycled wash water
(OP)
Does anyone have any experience either operating or designing a facility such as this? The idea is that it's not intended to get vehicles clean, just knock the mud and dirt off. And we're talking tracked machinery and other heavy duty equipment.
I've got it laid out now almost as a septic tank would be except I have three stages of "oil/water separation" and it is open to atmosphere...from there it will gravity drain to a sand filter and then into a large pump tank. I'm considering doing away with the sand filter, as it really doesn't matter if the water is clean when it comes out of the gun. My concern is with issues such as pressure gun clogging, odor control, etc.
Anywho if anyone has an operational or design insight, please send your thoughts my way. Thanks.
I've got it laid out now almost as a septic tank would be except I have three stages of "oil/water separation" and it is open to atmosphere...from there it will gravity drain to a sand filter and then into a large pump tank. I'm considering doing away with the sand filter, as it really doesn't matter if the water is clean when it comes out of the gun. My concern is with issues such as pressure gun clogging, odor control, etc.
Anywho if anyone has an operational or design insight, please send your thoughts my way. Thanks.





RE: Construction Vehicle Wash Facility using recycled wash water
I hope you have checked with your local regulatory agency for this kind of set up. (the discharge end)
If your large pump tank is for hauling the bad water off and you have a site that will take it (for a price), maybe you will be ok. As long as your wash bay water does not enter a local storm sewer system, ground infiltration, or ditch (sounds like you have this accounted for) maybe all is well.
We have wash bays like this where I work, and they are constantly clogged.
RE: Construction Vehicle Wash Facility using recycled wash water
They use a system of sophisticated settling tanks.
Their goal is to reclaim and separate aggregate from other materials (cement, admixtures and some oil). These are approved systems regarding the discharge. They are also pricey.
Dick
RE: Construction Vehicle Wash Facility using recycled wash water
RE: Construction Vehicle Wash Facility using recycled wash water
The dirt/sand and other solids will be settled through a series of oil water separator type settling bays (four stages). The water may be turbid, but I don't expect there to be any solids.
I'll check with the concrete washout folks for their system layout.
RE: Construction Vehicle Wash Facility using recycled wash water
For liquids, such as reclaim water, increased filtration is necessary to avoid drawing abrasives and suspended particles into the pump.
ht
RE: Construction Vehicle Wash Facility using recycled wash water
Surprisingly, the UST and AST had to be cleaned only twice during about three years of project. Most of the water evaporated. Mud and debris from the rainse operation would swept with brooms into the stockpile. The stockpile would also be covered with plastic sheathing to minimize dust from blowing around.
RE: Construction Vehicle Wash Facility using recycled wash water
RE: Construction Vehicle Wash Facility using recycled wash water
The high pressure pumps are low flow, high pressure so the cost of a filter system should not be that expensive.
RE: Construction Vehicle Wash Facility using recycled wash water
A suggestion which you may already have incorporated, is to have a separate settling tank, with multiple chambers, then a separate pump tank.
RE: Construction Vehicle Wash Facility using recycled wash water