WATERWAYS DISCHARGE = [(Stream Conc.1 , mg/L)(Stream Flow1, MGD)] + [(Stream Conc.2 , mg/L)(Stream Flow2, MGD)] (Stream Flow1, MGD) + (Stream Flow2, MGD)
Lesson 26: Activated Sludge Calculations
To know how much sludge to add back to the aeration basins, you have to calculate the BOD with your flow to achieve the proper food to microorganism ratio. BOD refers to the amount of oxygen that the …
Stream Concentration Formula = lbs/day discharged from plant + lbs/day upstream total flow MGD (plant flow + stream flow) x 8.34
6. MCRT = solids inventory [effluent solids + WAS solids] 7. Change, WAS rate, MGD = 8. Return sludge rate, MGD = (current solids inventory, lbs) – (desired solids inventory, lbs) WAS, mg/L x 8.34 …
To solve for one of the pie wedges below the horizontal line: cover that pie wedge then divide the remaining pie wedges into the quantity above the horizontal line and multiply by the purity, as a …
To get the Percent Slope (Slope %), multiply the Rise/Run by 100. Divide the answer by 9. Multiply that answer by 5.
Filter = Flow, MGD x BOD, mg/l x 8.34 Inf Volume of Filter Media, 1,000 Cu Ft Dry Solids, Lbs = Raw Sludge, Gal x Raw Sludge, % x 8.34 Organic Loading, RBC = Soluble BOD, Applied Lbs/Day 100% …
The optimum polymer dose as shown by a jar test is 8.8 mg/L. Determine the setting on the liquid polymer chemical feeder in ml/minute when plant flow is 3.5 MGD.
Activated Sludge Math Help
The document provides formulas and practice examples for calculating various wastewater treatment metrics, including Sludge Volume Index (SVI), Solids Inventory, MLVSS, Food to Microorganism …
Q = V x A. 1. Det. Time = tank cap. (gal) x (24 hours/day) (8.34 lbs / gal x MG) 1. Weir overflow, gal / day / ft = 2. Surface loading, gal / day / sq. ft. = influent flow, gal / day . 3. Solids loading, lbs / day / …