The results of a water analysis for Sungai Buaya is shown below: Ca Mg²- Na* HCO; = 1.7 meq/L 2.5 meq/L 0.6 meq/L 0.4 meq/L = 0.4 meq/L SO?- 2.0 meq/L = 0.2 meq/L %3D K+ %3D (i) Calculate the concentration for each cation and anion component in mg/L (ii) Draw a miliequivalent per litre bar graph (iii) List the hypothetical combinations with values (iv)Calculate the non-carbonate hardness in mg/L as CaCO;

The results of a water analysis for Sungai Buaya is shown below: Ca Mg²- Na* HCO; = 1.7 meq/L 2.5 meq/L 0.6 meq/L 0.4 meq/L = 0.4 meq/L SO?- 2.0 meq/L = 0.2 meq/L %3D K+ %3D (i) Calculate the concentration for each cation and anion component in mg/L (ii) Draw a miliequivalent per litre bar graph (iii) List the hypothetical combinations with values (iv)Calculate the non-carbonate hardness in mg/L as CaCO;

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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2.28. A groundwater is being considered for use as a domestic supply. The water has a temperature 15°C and the following chemical analysis: CONSTITUENT Ca+2 Mg Nat Fe +2 Cd+ HCO3 SO4 CO3 NO3 CONCENTRATION. g/m³ 190 84 75 0.1 0.2 260 64 30 440 35 a. Use an anion-cation balance to determine if the sample analysis is reasonable. b. What is the hardness of the water? c. Determine the alkalinity of the water. d. Estimate the sample pH. e. Would the water be an acceptable domestic supply? Why or why not?
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Question 57
The ionic character of a groundwater is defined by the following hypothetical combinations: Ca(HCO3)2 = 3.0 meq/L MgSO4 = 0.8 meq/L NaCl = 0.6 meq/L 0.4 meq/L Mg(HCO3)2 Na2SO4 = 0.2 meq/L Draw a milliequivalents-per-liter bar graph. Is the hardness of this water considered excessive? What process do you recommend for precipitation softening of this water?
Given:Flow rate of water = 500 L/minSuspended solids concentration in influent water = 100 mg/LRequired effluent suspended solids concentration = 10 mg/LFiltration rate = 10 m^3/m^2/hrFiltration tank dimensions: Length = 5 m, Width = 3 m, Depth = 4 mCalculate:o Calculate the total suspended solids (TSS) load in the influent water:o Calculate the filtration tank surface area:o Calculate the required filtration tank capacity:o Calculate the required detention time in the filtration tank: Q2) DisinfectionGiven:Flow rate of water = 2000 m^3/hChlorine residual required in effluent = 0.5 mg/LInitial chlorine concentration in influent water = 2 mg/LChlorine decay rate in disinfection tank = 0.05 per hourDisinfection tank volume = 300 m^3Calculate:o Calculate the chlorine demand in the influent water:o Calculate the chlorine dosage required:o Calculate the chlorine dosage rate:o Calculate the actual chlorine dosage rate considering chlorine decay:
2.28. A groundwater is being considered for use as a domestic supply. The water has a temperature 15°C and the following chemical analysis: CONCENTRATION, CONSTITUENT Ca+? 190 Mg*2 Na* Fe*2 84 75 0.1 0.2 Cd+2 HCO, So, 260 64 CO,-2 30 440 NO,- 35 a. Use an anion-cation balance to determine if the sample analysis is reasonable. b. What is the hardness of the water?
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HYDROLOGY Infiltration USE 3 SIGNIFICANT FIGURES IN FINAL ANSWER
A COD test is carried out on a batik factory wastewater. The relevant information is as follows. Volume of potassium dichromate standard solution 0.1N = 10.0mL Volume of wastewater sample = 20.0mL Wastewater sample dilution = 10X Fe^2+ standard solution = 0.1N Volume of Fe^2+ standard solution needed for wastewater sample = 13.55 mL Volume of Fe^2+ standard solution needed for distilled water = 34.70 mL. Calculate the COD value for the batik factory wastewater.
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