Waste treatment
FILTERS TIED INTO YOUR WASTE TREATMENT SYSTEM OR COMPLETE PACKAGED TREATMENT SYSTEMS
LAB SUPPORT AVAILABLE TO HELP TEST TREATMENT SCHEMES.
ENGINEERING SUPPORT TO DESIGN SYSTEMS
OPF �2 WITH TREATMENT TANK SKID
CHEMICAL ADDITION
FOR LOW SOLIDS APPLICATIONS THINK OF THE OBERLIN PRESSURE FILTER AS AN AUTOMATED CARTRIDGE FILTER WITH DRY CAKE DISCHARGE. IT CAN USE THE SAME FILTER MEDIA AS ANY CARTRIDGE FILTER.
APPLICATION: Regulated metals in discharged water
BENEFIT: Metal removal rates* that meet or exceed guidelines.
*Metal must be in solid form.
The Oberlin Filter Company technology, paired with DuPont media, was successfully demonstrated in 1990 under the EPA's Superfund Innovative Technology Evaluation (SITE) program. Details can be found in the EPA's Applications Analysis Report EPA/540/A5-90/007.
Filtrate: Battery Manufacturer
| Property | Feed Waste | Oberlin* / DuPont Medium |
Discharge Limits** |
|---|---|---|---|
| Turbidity (NTU) | >1,000 | 1.0 | NR |
| TSS (ppm) | 17,000 | 2.5 | 20.0 |
| Lead (ppm) | 40 | <0.01 | 5.0 |
| Zinc (ppm) | 410 | 0.2 | 5.0 |
| Copper (ppm) | 1050 | 1.2 | 5.0 |
* Existing plant clarifier underflow sludge was previously hauled off-site to hazardous landfill
** NR = Not Regulated
FILTRATE: LOW LEVEL RADIOACTIVE WATER
| Property | Feed Waste | Oberlin* / DuPont Medium |
NPDES Limits* |
|---|---|---|---|
| Turbidity (NTU) | 110 | .32 | - |
| TSS (ppm) | 687 | 1.4 | 31 |
| Aluminum (ppm) | 127 | 0.95 | 302 |
| Lead (ppm) | 1.6 | 0.2 | 0.43 |
| Zinc (ppm) | 0.5 | <0.1 | .032 |
| Copper (ppm) | 2.0 | <0.1 | 0.21 |
| Uranium (ppm) | 2.3 | 0.01 | 0.05 |
* Actual state discharge permit values
APPLICATION: Wherever filter aid is (back) washed off tubular / pressure leaf filter screens.
DESIGN: Special open lower platens allow easy access cleaning. Extra flushing and CIP options are available.
BENEFITS: Filter cakes will be dry, non-thixtropic. Typically 45-65% solids by weight. Offload solids loads from waste treatment plant by dewatering at source.
A particularly challenging wastewater results from resin impregnation. As the excess resin is accumulated in the rinse and cure bath a colloidal suspension is formed. This suspension can broken with pH adjustments and flocculation and an Oberlin Filter used to remove the solids. Best results with this treatment are obtained by using trained waste treatment operators.
Or you can use a one step treatment process developed with Traclana as described below. More details can be found at resinwaste.com
IMPREGNATION RESIN WASTE WATER
As the excess resin is accumulated in the rinse and cure baths the colloidal solution is formed. We offer a simple, one step process to recoup the water for reuse.
The steps for filtration include:
STEP 1: The transfer of a portion of the dirty, colloidal rinse water to our working tank. At the same time an equal volume of clean rinse water is returned to the same tank to maintain levels.
STEP 2: The working tank will automatically be dosed with the proper amount of a dry treatment chemical. The working tank will be agitated for a preset residence time.
STEP 3: When the agitation time is done the filter automatically enters into the filtration cycle. The full tank will then be processed through to the filtrate tank. When the working tank is empty the transfer of the dirty colloidal feed happens again and the filtrate is returned to the tank.