Bibliographic citations
Rodríguez, H., (2018). Expediente técnico, ampliación y mejoramiento del sistema de agua potable de la ciudad de Mollendo - Provincia de Islay, región Arequipa [Tesis, Universidad Nacional de Ingeniería]. http://hdl.handle.net/20.500.14076/15851
Rodríguez, H., Expediente técnico, ampliación y mejoramiento del sistema de agua potable de la ciudad de Mollendo - Provincia de Islay, región Arequipa [Tesis]. PE: Universidad Nacional de Ingeniería; 2018. http://hdl.handle.net/20.500.14076/15851
@misc{renati/709571,
title = "Expediente técnico, ampliación y mejoramiento del sistema de agua potable de la ciudad de Mollendo - Provincia de Islay, región Arequipa",
author = "Rodríguez Cueva, Helmut Ricky",
publisher = "Universidad Nacional de Ingeniería",
year = "2018"
}
Mollendo is a city that is located on the south west coast of Peru, has a population of approximately 28,000 inhabitants, which are sufficient by means of a drinking water system that is more than 56 years old and that currently presents a series of deficiencies in quality, quantity, continuity and coverage. The company providing sanitation services SEDAPAR S.A. aware of its limitations in the service, it has been elaborating projects and executing works to give a better service; as it is the case of the expansion of the catchment, line of conduction and potable water treatment plant to produce additional 100L / s to the existing production, remaining to solve the problems in the distribution system. To this end, it has prepared a profile with SNIP code 113240 called "Extension, Renewal and Improvement of the Drinking Water and Sewerage System of Mollendo Matarani - Districts of Mollendo, Province of Islay, Arequipa Region" The initial objective of the thesis was to develop at the level of technical file the alternative declared viable in the study of SNIP code profile 113240 property of SEDAPAR S.A. Given the age of the study, the growth of the population, the appearance of new urban permits in the city of Mollendo and works executed by the regional government without coordination with SEDAPAR SA, the alternative declared viable in the profile study does not conform to the current reality of the city of Mollendo. Therefore, in the thesis, new solution alternatives had to be considered, including new urban permits and new components, choosing the most economical one and developing it at the final study level. To this end, information has first been collected on the existing system, a diagnosis of the existing potable water system of the city of Mollendo has been made, the cadastre of ratings has been updated, the current population is determined, the population study is prepared and demand; then, the solution alternatives are proposed, in which an economic-technical analysis is developed to determine the most economical one and its components are dimensioned at the level of the technical file, everything concerning the specialty of sanitary engineering. The structures projected in the most economical alternative, involve common components that vary in volumes in case of reservoirs, in diameters in case of lines of conduction and flows, etc.; of all of them, one of each type of component has been chosen and its design has been drawn up at the level of the definitive study, since the elaboration of the complete file implies repeating the same procedures and the thesis would be very voluminous. For the planning of the solution alternatives, the existing system has been sectorized in 7 supply sectors. Where sectors from 2 to 6 will be supplied each from a supported reservoir and sector 1, will be directly from the treatment plant with the installation of an adduction line that will leave the projected cistern (1875m3). Then, based on the projected sectorisation and based on the selected alternative, the distribution system is composed of: • 7 supply sectors, of which: in sector 1, 2 and 3 the improvement is projected with the renovation of networks and household connections; In sectors 4, 5, 6 and 7 the expansion of home networks and connections is projected. • 9 supported storage reservoirs, of which RAP-1 and R6A are projected, in addition to which reservoirs R2 and R2A will supply sector 2 as well as reservoirs R6 and R6A that will supply sector 5. • 6 lines of impulsion, where four of them project their Ductile Iron construction of diameters DN450mm, DN350mm, DN250mm and DN150mm and two of them are existing PVC DN250mm and DN160mm. • A line of conduction, which is projected of DN150mm of PVC, • 6 pumping stations, of which 4 pumping stations are projected and two are existing, for these two existing pumping stations their improvement is contemplated. • It is planned to change the existing adduction lines with the exception of reservoir R-01 (Sector 6), The entire projected system is designed to work automatically, reservoirs and pumping stations are projected with elements necessary for them to work automatically. The design period of the file has been estimated until the year 2036, but the existing treatment plant; as well as, the intake components, raw water line, cover the demand until the year 2029, in this year, all these components must be expanded to drive and treat an additional 29.23L / s to the capacity they possess, which is 200L / s. On the other hand, in the diagnosis it has been possible to identify that the potable water treatment plant is not complying with the elimination of heavy elements such as arsenic, iron and other elements, since they have been designed for other les demanding standards, and with the change of Maximum Permissible Limits for water suitable for human consumption published in 2011, in case of arsenic, this parameter has dropped 10 times less; therefore, the treated water is not complying with this new norm. Given that this thesis does not intervene with works in the Potable Water Treatment Plant, because it currently has idle installed capacity, this thesis proposes three possible solutions, which have to be investigated and evaluated economically before their implementation in plant.
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