Challenge

International - Matex Tank Terminal (IMTT) needed to treat vegetable oil residue from product spills, tank washings and dock runoff.  Before installing the OMNIFLO® Sequencing Batch Reactor, IMTT used an offsite treatment process.  With the containments of concern, vegetable oil (with soluble and insoluble components), the most efficient and cost effective treatment to remove these components was with pretreatment via an oil/water separator and a induced air flotation system to remove insoluble components and bacteria or aerobic treatment to remove soluble components.

Solution

With the installation of the OMNIFLO® SBR, mixing and aeration is accomplished in a single reactor basin and bacteria is allowed to settle with water decanted off the top.  Influent is discharged into the SBR basin, which includes jet mixers, jet aeration and decanters.  When the SBR process is complete the effluent is discharged to a 48,000 gallon tank and checked for Chemical Oxygen Demand (COD).  The effluent is discharged into the Mississippi River utilizing an effluent discharge pump.  The settled sludge is used as a fertilizer at a local nursery. 

Results

According to the facility manager the OMNIFLO® SBR is producing excellent effluent.  The automated control package included with the system also has been extremely reliable requiring minimal operator attention.

Performance Results

	FLOW	COD		TSS
	(MGD)	Influent mg/l	Effluent mg/l	Influent mg/l	Effluent mg/l
Design	0.025	5,230	200	380	45
Actual	0.050	2,966	155	350	40

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