sludge box

sludge box

[′sləj ‚bäks]
(mining engineering)
A wooden box in which sludge settles from the mud flush.
References in periodicals archive ?
b) Remove and replace Return Activated Sludge/Waste Activated Sludge Box with new.
The process plant (pumps, strainers, sludge boxes and other installations related to the process) is performed in a separate contract.