basic math midterm review math for water technology mth 082-2 math for water technology mth 082-2

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• Slide 1
• Basic Math Midterm Review Math for Water Technology MTH 082-2 Math for Water Technology MTH 082-2
• Slide 2
• RULES FOR MIDTERM 1.DRAW AND LABEL DIAGRAM 2.LIST FORMULAS 3 SOLVE EACH FORMULA INDIVIDUALLY 4. ISOLATE THE PARAMETERS NECESSARY 5. USE YOUR UNITS TO GUIDE YOU 6. SOLVE THE PROBLEM 1.DRAW AND LABEL DIAGRAM 2.LIST FORMULAS 3 SOLVE EACH FORMULA INDIVIDUALLY 4. ISOLATE THE PARAMETERS NECESSARY 5. USE YOUR UNITS TO GUIDE YOU 6. SOLVE THE PROBLEM
• Slide 3
• Chlorine Concentrations Hypochlorite or Available Purity = DIVIDE 1.Sodium hypochlorite 5 to 15% available chlorine 2. Calcium hypochlorite (HTH) 65-70% available chlorine 3. Chlorine gas 100% available chlorine or 100% active chlorine 1.Sodium hypochlorite 5 to 15% available chlorine 2. Calcium hypochlorite (HTH) 65-70% available chlorine 3. Chlorine gas 100% available chlorine or 100% active chlorine
• Slide 4
• % Dry Strength of Solution 1. Dry chlorine % Chlorine Strength= Chlorine (lbs) X 100 Solution(lbs) 1. Dry chlorine % Chlorine Strength= Chlorine (lbs) X 100 Solution(lbs) 2. Dry chlorine % Chlorine Strength= Chlorine (lbs) X 100 Water, Lbs + Chlorine(lbs) 2. Dry chlorine % Chlorine Strength= Chlorine (lbs) X 100 Water, Lbs + Chlorine(lbs) 3. Dry chlorine % Chlorine Strength= Hypo(lbs)(% available Cl) X 100 100 Water, Lbs+ hypo(lbs) (% available Cl) 100 3. Dry chlorine % Chlorine Strength= Hypo(lbs)(% available Cl) X 100 100 Water, Lbs+ hypo(lbs) (% available Cl) 100
• Slide 5
• Dry Hypochlorite Feed Rate 1.Hypochlorite (lb/day)=lbs/day chlorine % available chlorine 100 2. Hypochlorite (lb/day)= (mg/L chlorine)(MGD)(8.34) %strength hypochl 100 3. Hypochlorite (lbs)= (mg/L chlorine)(MG tank Vol)(8.34) %strength hypochl 100 1.Hypochlorite (lb/day)=lbs/day chlorine % available chlorine 100 2. Hypochlorite (lb/day)= (mg/L chlorine)(MGD)(8.34) %strength hypochl 100 3. Hypochlorite (lbs)= (mg/L chlorine)(MG tank Vol)(8.34) %strength hypochl 100
• Slide 6
• % Liquid Strength of Solution 1. Liquid chlorine Lbs Cl in liq. hypo= Lbs of chlorine in hypochlorite solution 1. Liquid chlorine Lbs Cl in liq. hypo= Lbs of chlorine in hypochlorite solution 2. Liquid chlorine (liq. Hypo lbs)(%Strength liq. Hyo) = (hypo Sol lbs) (% Strength liq. hyp) 100 100 2. Liquid chlorine (liq. Hypo lbs)(%Strength liq. Hyo) = (hypo Sol lbs) (% Strength liq. hyp) 100 100 3. Liquid chlorine (liq. Hypo gal)(8.34)(%Strength liq. Hyo)=(hypo Sol gal)(8.34)(%Strength liq. Hyp) 100100 3. Liquid chlorine (liq. Hypo gal)(8.34)(%Strength liq. Hyo)=(hypo Sol gal)(8.34)(%Strength liq. Hyp) 100100
• Slide 7
• Lbs/day When do you multiply? Available to Active (multiply) Twenty 20 pounds of 50% available chlorine equals 10 lbs pounds of 100% active chlorine ? 20 lbs 10 lbs Active is pure Available is unpure 20 lbs (0.50)= 10 lbs
• Slide 8
• Lbs/day When do you divide? Active to Available Forty 40 pounds of 100% active chlorine (chlorine gas) has the same disinfection power as 61 lbs pounds of 65% available HTH chlorine ? 40 lbs 61 lbs Active is pure Available is unpure 40 lbs = 61 lbs (.65)
• Slide 9
• Lbs/day When do you multiply? Available to Active (multiply) HW #4 Problem 3 Twenty two 22 pounds of 65% available chlorine equals 14.3 lbs pounds of 100% active chlorine! HW #4 Problem 3 Twenty two 22 pounds of 65% available chlorine equals 14.3 lbs pounds of 100% active chlorine! 22 lbs 14.3 lbs Active is pure Available is unpure 22 lbs (0.65)= 14.3 lbs
• Slide 10
• Lbs/day When do you multiply? Available to Available (multiply) HW #3 Problem 3 How many pounds of available chlorine are in 2 pounds of 65% powdered dry (available) chlorine? HW #3 Problem 3 How many pounds of available chlorine are in 2 pounds of 65% powdered dry (available) chlorine? 2 lbs of 65% ava 1.3 lbs is available Available is unpure 2 lbs (0.65)= 1.3 lbs
• Slide 11
• Lbs/day When do you divide? When do you multiply? PURITY IS THE KEY!!!!! If you have a certain amount of