![21 Points]) A water tre of vari Water treatment plant needs to soften water containing the below concentration e. Assume the pH is near neutral and that the flowrate is 1.7 MGD (million ous constituents gallons per day). Determine: a) the total hardness (mg/L as CaCO.) b) the total alkalinity (mg/L as CaCO3) c) b ased on the i on balance, does the analysis appear to be missing some ions? ay the total amount of sludge (CaCOs and Mg(OH)2) produced by the softening process (in kg/day) Constituent CO2(aq) Ca2+ Mg2+ Nat HCO3 SO42 Cl Concentration (ma/L as CaCOx) 60 190 336 150 250 162](http://img.homeworklib.com/questions/e716bae0-6e3c-11eb-a2ac-39968b0bd655.png?x-oss-process=image/resize,w_560)
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21 Points]) A water tre of vari Water treatment plant needs to soften water containing the...
6.16 A water is analyzed and found to have the composition shown in the following table Component...
6.16 A water is analyzed and found to have the composition shown in the following table Component CO2 Ca Mg Nat Alkalinity Soi pH Concentration 6.0 mg/L 50.0 mg/L 20.0 mg/L 5.0 mg/L 3.1 millimole/L 85 mg/L 7.6 2+ (a) What concentrations (expressed as mg/L) of slaked lime [Ca(OH)2] and soda ash (Na2CO3) must be added to the water to remove the maximum practical hardness? (b) If the water shown in the table is the source water for a 15...
What amount of lime, in mg/L as CaCO3, is required to soften the village of Lime...
What amount of lime, in mg/L as CaCO3, is required to soften the village of Lime Ridge's water to 80 mg/L hardness as CaCO3 Compound Concentration, mg/L as CaCO3 CO2 4.6 Ca2+ 237.9 Mg2+ 62.2 HCO3- 268 SO42- 32.1
Determine the lime and soda ask dose, in mg/L as CaCOs to soften the following water...
Determine the lime and soda ask dose, in mg/L as CaCOs to soften
the following water to a final hardness of 70.0 mg/L as CaCO3. The
ion concentrations reported below all as CaCO3.
6-16. Determine the lime and soda ash dose, in mg/L as CaCO3 to soften the following water to a final hardness of 70.0 mg/L as CaCO3. The ion con- centrations reported below are all as CaCO2 Ca2+ 220.0 Mg2+一75.0 HCO3 265.0 CO2 17.0 Answers: Total lime addition-...
Part A: Problem solving section 1. In last week homework students were determining the total hardness,...
Part A: Problem solving section 1. In last week homework students were determining the total hardness, carbonate hardness, non-carbonate hardness and the alkalinity of the following groundwater sample: Ca2+ = 94 mg/L Mg2+ = 24 mg/L Nat = 14 mg/L HCO3 = 317 mg/L SO42- = 67 mg/L Cl = 24 mg/L Build hardness bar chart and calculate the stoichiometric amount of lime and soda ash needed to soften this water sample.
1. (35 pts) The following balanced chemical equations represent the use of lime [Ca(OH)2] for softening...
1. (35 pts) The following balanced chemical equations represent the use of lime [Ca(OH)2] for softening of drinking water. First step: lime added and all CO2 precipitates as CaCO3 Ca(OH)2 + + CO2 – CaCO3 + H20 Second step: more lime added and all Ca²+ and HCO3- precipitate as CaCO3 Ca(OH)2 + Ca²+ + 2HCO3 – 2CaCO3 + 2H20 Third step: more lime added and Mg2+ and HCO3 are converted to MgCO3 which does not precipitate (also more Cacos precipitate...
6.30 Water softening: Reagent needs and sludge formation Water containing 150 gm of Ca2+ and 75...
6.30 Water softening: Reagent needs and sludge formation Water containing 150 gm of Ca2+ and 75 g m of HCO3 alkalinity is to be softened using the lime-soda process. (a) For a water flow rate of 1 m s-?, calculate the daily chemical requirements of lime (Ca(OH)2) and soda (Na2CO3)(metric tons per day). (b) Calculate the rate of generation of sludge solids mass (metric tons per day). (c) Calculate the net change in total dissolved solids (TDS, g m*) caused...
A new water treatment facility will be built to supply water to the town of Freemont. The town's ...
A new water treatment facility will be built to supply water to the town of Freemont. The town's population is currently 14,000 and the per capita water use is 100 gal per day. The new facility will be designed to account for increases in both per capita water use and population growth, and projections for water use will be determined for fifty years in the future. The population of the town of Freemont grows at an average rate of 2%...
Please need ASAP Problem 1 (25 pts) The influent water to a water treatment plant that treats 50x10° L/day has a pH of 7.5 and the following composition: eqmolW (g/mol) [1 | (me/L) | [1 (mg/L...
Please need ASAP
Problem 1 (25 pts) The influent water to a water treatment plant that treats 50x10° L/day has a pH of 7.5 and the following composition: eqmolW (g/mol) [1 | (me/L) | [1 (mg/L as CaCO) L) mg/L) | H2COs 100 2 62.0 3.2 161.3 Ca2 100 2 40.0 5.0 250.0 Mg2 40 2 24.4 3.3 163.9 Nat 43.5 20 0.9 23.0 300.0 300 100.0 6.0 ALK 114.6 2.3 96.0 110 SO1 a) Write the chemical reactions controlling...
A new water treatment facility will be built to supply water to the town of Freemont. The town’s ...
A new water treatment facility will be built to supply water to the town of Freemont. The town’s population is currently 14,000 and the per capita water use is 100 gal per day. The new facility will be designed to account for increases in both per capita water use and population growth, and projections for water use will be determined for fifty years in the future. The population of the town of Freemont grows at an average rate of 2%...
(6 points) A chemical analysis of a surface water sample yields the following data: Concentration (mg/L)...
(6 points) A chemical analysis of a surface water sample yields the following data: Concentration (mg/L) Ion Ca2+ Mg2+ Fe2 K+ CI SO..2 HCO, CO;2- pH a. Find the alkalinity (in mol/L) b. Find the hardness as mg CaCO/L.
6.16 A water is analyzed and found to have the composition shown in the following table Component CO2 Ca Mg Nat Alkalinity Soi pH Concentration 6.0 mg/L 50.0 mg/L 20.0 mg/L 5.0 mg/L 3.1 millimole/L 85 mg/L 7.6 2+ (a) What concentrations (expressed as mg/L) of slaked lime [Ca(OH)2] and soda ash (Na2CO3) must be added to the water to remove the maximum practical hardness? (b) If the water shown in the table is the source water for a 15...
Determine the lime and soda ask dose, in mg/L as CaCOs to soften
the following water to a final hardness of 70.0 mg/L as CaCO3. The
ion concentrations reported below all as CaCO3.
6-16. Determine the lime and soda ash dose, in mg/L as CaCO3 to soften the following water to a final hardness of 70.0 mg/L as CaCO3. The ion con- centrations reported below are all as CaCO2 Ca2+ 220.0 Mg2+一75.0 HCO3 265.0 CO2 17.0 Answers: Total lime addition-...
Part A: Problem solving section 1. In last week homework students were determining the total hardness, carbonate hardness, non-carbonate hardness and the alkalinity of the following groundwater sample: Ca2+ = 94 mg/L Mg2+ = 24 mg/L Nat = 14 mg/L HCO3 = 317 mg/L SO42- = 67 mg/L Cl = 24 mg/L Build hardness bar chart and calculate the stoichiometric amount of lime and soda ash needed to soften this water sample.
1. (35 pts) The following balanced chemical equations represent the use of lime [Ca(OH)2] for softening of drinking water. First step: lime added and all CO2 precipitates as CaCO3 Ca(OH)2 + + CO2 – CaCO3 + H20 Second step: more lime added and all Ca²+ and HCO3- precipitate as CaCO3 Ca(OH)2 + Ca²+ + 2HCO3 – 2CaCO3 + 2H20 Third step: more lime added and Mg2+ and HCO3 are converted to MgCO3 which does not precipitate (also more Cacos precipitate...
6.30 Water softening: Reagent needs and sludge formation Water containing 150 gm of Ca2+ and 75 g m of HCO3 alkalinity is to be softened using the lime-soda process. (a) For a water flow rate of 1 m s-?, calculate the daily chemical requirements of lime (Ca(OH)2) and soda (Na2CO3)(metric tons per day). (b) Calculate the rate of generation of sludge solids mass (metric tons per day). (c) Calculate the net change in total dissolved solids (TDS, g m*) caused...
A new water treatment facility will be built to supply water to the town of Freemont. The town's population is currently 14,000 and the per capita water use is 100 gal per day. The new facility will be designed to account for increases in both per capita water use and population growth, and projections for water use will be determined for fifty years in the future. The population of the town of Freemont grows at an average rate of 2%...
Please need ASAP
Problem 1 (25 pts) The influent water to a water treatment plant that treats 50x10° L/day has a pH of 7.5 and the following composition: eqmolW (g/mol) [1 | (me/L) | [1 (mg/L as CaCO) L) mg/L) | H2COs 100 2 62.0 3.2 161.3 Ca2 100 2 40.0 5.0 250.0 Mg2 40 2 24.4 3.3 163.9 Nat 43.5 20 0.9 23.0 300.0 300 100.0 6.0 ALK 114.6 2.3 96.0 110 SO1 a) Write the chemical reactions controlling...
(6 points) A chemical analysis of a surface water sample yields the following data: Concentration (mg/L) Ion Ca2+ Mg2+ Fe2 K+ CI SO..2 HCO, CO;2- pH a. Find the alkalinity (in mol/L) b. Find the hardness as mg CaCO/L.
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