Repository logo

Browsing by Author "Ramos Ascue, Juan Diego"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Análisis de riesgos de la seguridad e higiene ocupacional durante el manejo de residuos sólidos y reciclaje de plástico polietileno
    (Corporación Universitaria Lasallista, 2017) Ramos Ascue, Juan Diego; Baldeón Quispe, Wilfredo
    Introduction. According to Pérez (2010) for each ton of waste generated by the consumption of any product, 25 tons of waste have been produced in the process of extraction of raw materials and manufacture of the product, which is why it is essential to perform a correct management of the residues taking into account the occupational safety and health risks that arise during the management. Objective. This paper identifies and evaluates occupational safety and health risks during the collection and segregation of solid waste as well as the conditioning, agglomeration and pelleting of recycled plastic. Materials and methods. The diagnosis of occupational safety was based on the registry of occupational accidents occurred in the period from July 2013 to June 2014, while the diagnosis in occupational hygiene was made from measurements of noise, illumination, thermal stress, vibration, particulate matter. Total and breathable, manual handling of load and repetitive work. Results. It identified 77 hazards to which the company’s workers are exposed. These hazards were assessed using the risk matrix developed by the Chilean Security Association (ACHS, 2009). Conclusion. The result of the evaluation reports that noise, total particulate matter and whole-body vibration are critical hazards, while manual handling of load, repetitive motion, heat and insufficient machinery protection are significant hazards. Almost all hazards with significant and critical risk are hazards of occupational hygiene, which implies that improvements must be made in the organization and infrastructure of the work environment as well as promoting a culture of accident prevention.
  • Thumbnail Image
    Item
    Medición en línea de la DQO mediante correlación del coeficiente de absorción espectral de luz uv
    (Corporación Universitaria Lasallista, Editorial Lasallista, 2018) Ramos Ascue, Juan Diego
    Introduction. The organic material is a source of damage to the environmental and superficial water, nevertheless, the direct and continuous measurement of this, either COT, BOD, or COD, is difficult and has a relatively high cost. A method currently used to monitor the organic material in real time is by means of the spectral absorption coefficient at a wavelength of 254nm (SAC254). Objective. Evaluate the precision of measurement and the level of correlation between COD and the value of SAC254. Materials and methods. Two practical tests of organic measurement systems with this technology (SAC254) were carried out, a test was conducted in a domestic wastewater treatment plant owned by SEDAPAL and another in an industrial wastewater treatment plant owned by PROTISA. The measurement system employed included an in-line sensor with SAC254 and a data logger capable of correlating parameters SAC254 and COD. Results. An average error of 13% was observed in the measurement system, the SAC254 proved to be a practical tool in terms of easy handling, reagent-free and suitability for use in both domestic and industrial wastewater. Conclusion. The measurement system installed allowed us to verify that there is indeed a direct