Inventor:
Law P L, Ngu L H & Wong K K
Faculty of Engineering
UNIMAS
Circular Oil & Grease Phase Separation
A circular phase separation tank/system, with inclined coalescence frustums for efficient removal of oil and grease and suspended solids from wastewaters, has been developed and tested.
The primary component of the separation system consists of a series of inverted and upright frustums to enhance gravity separation, coalescence of oil droplets and coagulation of suspended solids.
It applies the principle of Boycott effect whereby the presence of inclined frustums medium promotes faster rising of oil droplets and settling/falling of suspended solids by process of coalescence and coagulation.
The design takes the shape of a circular tank to take advantage of the continuous decrease of horizontal velocity as surface area increases. The inlet of the separator is equipped with an upflow center-feed perforated-pipe inlet distributor to direct flow to the inclined parallel frustums to enhance oilwater- solids separation.
The invention is proven effective for the treatment of wastewaters loaded with oil and grease, and recycling of metal-cutting fluids loaded with tramp oils and fine metal chips.
Please click on the link below to see pictures of the invention
