Browsing by Author "Pérez Fernández, Paola Cristina"

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    Análisis del proceso de remoción de sulfuro por distintos métodos en aguas residuales de la planta de tratamiento Mollepamba de la EP-EMAPA-A
    (Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Maestría en Química, 2021) Pérez Fernández, Paola Cristina; Jordán Hidalgo, Edison Patricio
    The Mollepamba wastewater treatment plant (WWTP) of the Public Company EMAPAA presents problems regarding the amount of sulfides contained in the water that is discharged into the Pachanlica river. When analyzing the physicochemical parameters required by the TULSMA regulation, I know that the treatment maintained by the WWTP is not enough because it increases the sulfide load, exceeding the allowed limit (0.5mg / L). As a solution, three different methodologies were analyzed: aeration, advanced oxidation (H2O2) and coagulation (PAC). Each methodology was applied considering different mixing times, concentrations and speed. As results of the experimentation, it is concluded that the aeration technique achieves a sulfide elimination of 12%; oxidation 33% and coagulation 91%. The best option involves the use of the coagulant with a dosage of 150 mg / L and a mixing speed of 300 rpm, conditions that favor the attraction of loads to give rise to sedimentation and removal of the contaminant. The application of the aforementioned treatment reduced the sulfide load from 0.337 to 0.03mg / L, adjusting to the regulations. Finally, the research shows that the applied methodologies do not have a considerable effect on temperature and pH since their variation is minimal.
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    Estudio de factibilidad para la instalación de una planta procesadora de mezcla en polvo (ácido cítrico, sal, pimienta y glutamato monosódico) para la preparación de michelada instantánea
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos. Carrera de Ingeniería en Alimentos., 2016-11) Pérez Fernández, Paola Cristina; Ortiz Escobar, Jacqueline de las Mercedes
    Feasibility establishment of a powder-mix instant michelada manufacturing plant through market research, technical and financial analysis was carried out. Demand of said product was identified in Ambato, Baños (Tungurahua), Latacunga, Salcedo (Cotopaxi), Riobamba, Guano (Chimborazo), Mera, Pastaza (Pastaza) cantons belonging to Zone 3 in Ecuador. Product acceptance rate was 78,9 percent and productive capacity was set on 250 units. Through technical analysis, raw material, equipment, production processes, product design and estimated shelf-life (93 days, 18 Celsius degree) were established. Financial analysis showed a IRR of 53,1 percent, a payback period of 2,43 years, and a NPV of 11469,00 dollars, showing that the present project is feasible to be carried out.