Grease traps
Three restaurant kitchens sharing interceptors that were filling faster than the pump-out schedule could keep up with, with grease backing up into sinks between visits.
reduction in fats, oils and grease
01The plant
Three restaurant grease interceptors on a single resort property.
02Before
Grease was filling the interceptors faster than the pump-out schedule could keep up with, backing up into sinks between visits. A calcium nitrate programme had not resolved it.
03Treatment
The calcium nitrate was replaced with a liquid product dosed by automated pump from a five-gallon pail at each kitchen, upstream of the interceptor, three times a day at low-flow periods. Dosing was timed away from cleaning-chemical and hot-water discharges, which would have destroyed the product before it reached the grease.
Every result in this library was measured at an operating plant treating with one of the formulations SediLogic supplies, over the window stated above. It is a field result published as reported, not a controlled trial we ran.
04Sizing
Timed to the kitchen's own flow pattern rather than sized against a volume — a continuously fed interceptor is a different problem from a standing lagoon.
05Method
Interceptor measurements taken before treatment and during it.
06Outcome
Annual treatment cost down about 40 per cent against the programme it replaced.
At the start
Grease accumulating faster than the pump-out interval, backing into sinks, organic build-up on pipe walls.
At the close
71 per cent less grease on average across the three interceptors, backups stopped and the pipe-wall build-up cleared.
07Limits
Three interceptors at one property under one kitchen management is a narrow base. Nothing was left untreated, and the 71 per cent is an average across the three with no spread published. How grease was measured in the interceptor is not stated.
Only the volatile organic fraction of a sludge responds to any of this. Grit, sand, silt, mineral precipitates and plastics remain at any dose, here and everywhere else.
—What we would supply
SediLogic Liquid FOG is the article in the range built for this — a liquid concentrate aimed at fats, oils and grease and dosed into the collection system rather than at a lagoon blanket. A trap takes a metered or poured dose; a sinking solid has nothing to sink to.
SediLogic holds a written dose table for wastewater lagoons and for no other duty, so the planner will not size a trap and we will not guess at one. Tell us the trap, the flow and what it is loaded with, and a quantity is settled with a person.
—Read next
Grease traps
Industrial2 years
fewer blockage incidents in the second year
Grease building in kitchen and deli drain lines fast enough to generate a steady run of blockages and emergency call-outs.
Grease traps
IndustrialNot published
less oil accumulation in the trap
Oil accumulating in the trap faster than the cleaning contract allowed for, and taking a long time to clear at each visit.
Grease traps
Industrial300 days
reduction in BOD and suspended solids in the trap
A trap whose contents were strong enough that every pump-out was charged as high-strength waste.
Your lagoon next
A different plant, a different loading and a different sludge. What decides your result is how much of your own accumulation is organic and treatable, and whether the dose is sized against the lagoon in front of us rather than read off this page. Tell us the dimensions and we will size it.
