Restaurant Wastewater Treatment
Grease Trap Wastewater Treatment, Fats, Oils & Grease Easily Removed Wastewater Recycled
A grease trap waste hauling operation requested assistance on determining a way to treat their highly varied grease trap waters. The grease is yellow (cooking oils from kitchens/restaurants) as well as grey grease from other nonfood sources. The objective was to find the best Floccin to treat the water so the suspended solids, Oil and Grease, and BOD are removed prior to discharge to the local POTW.
1105 worked very well in “Floccin” the contaminants from the water and
an Air Sparged Hydrocyclone (ASH) will be used as the flotation
technology to float the oily solids from the water. The residual
sludge will be dewatered using a 3 phase centrifuge (oil phase, water
phase and solids phase split) for additional oil recovery and
dewatering of the sludge. The recovered oil will be added to the
oil/grease that is thermally separated upstream and sent to their
biodiesel process. The treatment is shown below for the yellow and
grey grease waters.
Yellow Grease flocked well and will separate in the ASH and the solids
because of the Floccin 1105’s unique chemistry contains 98% of the
residual oil that will be recovered in the 3 phase centrifuge.
The Grey Grease (right photo), has less grease particles and is of less value to the client for recoverable oil, but the water clarity will insure the surcharges to the local POTW will be low (the POTW charges per pound for BOD and TSS).