Question
Please explain in detail de answer and in steps Water is pumped to feed a cooling tower. One of the important considerations of the quality
Please explain in detail de answer and in steps Water is pumped to feed a cooling tower. One of the important considerations of the quality of the water fed to the cooling tower affects the calcium concentration, which must be less than 150 ppm as CaCO3, a higher concentration generates calcium crystal scaling in the pipes and cooling tower, generating high pressure drops and corrosion of materials. Because it is routine practice to test groundwater, a 30 mL aliquot was taken and titrated with 0.1 M EDTA requiring 18 mL to reach the endpoint using eriochrome black T as indicator. Additionally, for partial hardness, a 30 mL aliquot of groundwater was taken and titrated with 0.125 M EDTA requiring 13 mL to reach the endpoint using murexide as indicator. After the analysis, the influent was diverted to a boiler to remove hardness. After the evaporation-condensation process, an aliquot of 20 ml of water was taken and titrated again with 0.07 M EDTA, now consuming 0.8 ml for total hardness analysis. . What is the total and partial hardness of groundwater expressed as ppm of CaCO3? What is the Calcium and Magnesium concentration of the groundwater expressed as ppm of CaCO3? What is the calcium concentration (ppm CaCO3) of the process water after passing for the boiler? After the groundwater has passed through the boiler, is it suitable to be fed to the cooling tower? Regarding the hardness of the water, how is the water fed to the cooling tower classified?
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