Calculating OILSORB Organoclay requirements.
1. Calculate amount of OILSORB that is required. Known: Flow=15 gpm; O&G = 70 ppm. Operating period: 1440 min/day, 7 days/week. ppm x 0.0000084=lb/gal x gpm example: 70 ppm x .0000084= 0.00059/.60 adsorption capacity= 0.001 x 15 gpm = 0.0147 lb OILSORB per minute x 1440 min/day= 21,17 lb OILSORB/day x 7= 150 lb OILSORB per week x 4= 592 lb OILSORB /month x 12 = 7112 lb per year /50 lb/ft3 bulk density = 142 ft3. Remember, the adsorption vessel requires 20% expansion room.
2. To calculate the cost savings when comparing the amount of OILSORB used vs activated carbon, as well as the requirement of OILSORB, contact biomin@aol.com and ask for the spreadsheet.
3. To calculate the OILSORB requirement based on porosity of the OILSORB, view this tutorial.
The quantity of OILSORB needed will depend, in part, on the desired effluent concentration. The tutorial is helpful because it estimates the amount of OILSORB needed for different design flow rates, pollutant concentrations, and desired removal efficiencies. It stops treatment when the effluent concentration is 20% of the influent concentration.
4. Inlet concentration of 100 ppm O&G. Oil specific gravity: 1 (the number 1 is for ease of calculations; for correct specific gravities check the web site, www.engineeringtoolbox.com, or type in specific gravity for liquids on google.com) OILSORB loading factor: 50% by weight, or 50 lb of oil / 100 lb of OILSORB. Proposed purchase cost of OILSORB: $2.-/lb. lbs of oil/million gallons = 100 x S.G. 8.33 lb/gal =100 ppm x 1 x 8.33 lb/gal = 833 lb of oil/million gallons of wastewater.
Using a loading rate of 0.50 lb of oil adsorbed per pound of OILSORB , resulting in a requirement of 1666 lb of OILSORB, at a total product cost of $3,332.-. This translates into a product cost of approximately 0.0033/per gallon wastewater treated. Assuming $0.001 for amortization of the capital costs results in a total treatment cost of about $0.0043/per gallon of wastewater treated.
