Trabajo de grado - Pregrado
Diagnóstico de la situación actual de la planta de tratamiento de agua residual de la Universidad Autónoma de Occidente
Fecha
2018-05-16Autor
Giraldo García, Katherin
Institución
Resumen
The wastewater treatment plants (WWTP) generate impacts on society and the environment, improving the quality of life and reducing the health risk by having a correct wastewater management; In this sense, the knowledge of the operational conditions of the system plays a fundamental role in the improvement and optimization projects of the existing treatment systems.
Taking into account these aspects, in this project a diagnosis was made of the current situation of the Wastewater Treatment Plant of the Autonomous University of the West, in order to identify key elements oriented to the possibility of improving the plant or factors to highlight in the wastewater management in the University.
The study consisted of a technical analysis of the treatment system in terms of the units and constructions and the variables of control and operation of the activated sludge system. This analysis is established, that in terms of operational conditions, the system is operated as a sludge system, activated in the conventional mode, and in the terms of the conditions, technical, operational, such as a mud system, activated, in the aeration mode, extended. In the same way, it was identified that the system was operated under the conditions of hydraulic and organic overload, which was reflected in a HRT of 19 hours in the aeration tank and presenting sludge flotation events; nevertheless, it is highlighted that the system has achieved on average efficiency reduction of BOD5, TSS and fats and oils of 96.6% ± 4.1%, 98.4% ± 3.3% and 95.1% ± 5.2% respectively, allowing toreach the quality objectives in terms of compliance with regulations for the discharge of wastewater on a surface source.
In terms of the biological conditions of the system, an exploratory analysis of the present microbiota was carried out and it was found that the biomass found in the system presents a typical microbiota of activated sludge systems mainly of protozoa, of which the presence of ciliates stands out free crawlers such as Euplotes sp., and free swimming ciliates such as Paramecium sp. Additionally, the presence of filamentous bacteria that can be found with the events of bad sedimentation in the secondary sedimenter is evidenced.