By Joanne K. Price

With many labored examples, this publication presents step by step guideline for all calculations required for wastewater therapy. Pertinent calculations are very easily summarized in every one bankruptcy. The textual content covers the entire basic math strategies and talents wanted for day-by-day wastewater remedy plant operations. The workbook for this e-book can be bought individually or jointly within the utilized Math for Wastewater Plant Operators Set (ISBN: 9781566769891).

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Extra resources for Applied Math for Wastewater Plant Operators

Example text

34) = lbs Conc. 34 lbs/gal) = lbs n CHEMICAL DOSAGE IN WELLS, TANKS, RESERVOIRS, OR PIPELINES Wells are disinfected (chlorinated) during and after construction and also after any well or pump repairs. Tanks and reservoirs are chlorinated after initial inspection and after any time they have been drained for cleaning, repair or maintenance. Similarly, a pipeline is chlorinated after initial installation and after any repair. Digesters may also require chemical dosing, although the chemical used is not chlorine but lime or some other chemical.

Examples 3 and 4 illustrate this type of calculation. Average Tot. 1 MG. What was the average daily flow for this three-month period? Since average daily flow is desired, you must divide by the number of days represented by the three-month period, rather than by the number of months represented. 8 MG. What was t%e average daily flow (ADF) for the month of November? 8 MG 30 days Example 4: (Average Flow Rates) Cl The total flow for one day at a plant was 2,600,000 gallons. What was the average gpm flow for that day?

Examples 2-4 illustrate this calculation. 7 MGD. If the influent to the clarifier has a suspended solids concentration of 230 mg/L and the primary effluent has 110 mg/L SS,how many lbs/day suspended solids are removed by the clarifier? If theBOD of the trickling filter effluent is 98 mglL,how many lbslday BOD f are removed by the trickling fdter ? 4 POUNDS OF SOLIDS UNDER AERATION CALCULATIONS In any activated sludge system it is important to control the amount of solids under aeration (solids inventory).

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