CEDRIG Light
Informe PDFConstruction of a water treatment plant and sewer system for the Guaqui town, Department of La Paz / Municipality of Guaqui
Resumen
Información general
Autor
Roberto Méndez
Última actualización
Junio 2018
Objetivo general
Improve the current living conditions of Guaqui's inhabitants through the implementation of an appropriate sewage system, benefiting the overall population (perspective for the next 20 years)
País
- Bolivia
Presupuesto
Bs. 7.000.000 (approximately USD 1'000'000)
Duración
September 2016 - July 2017 (approximately 10 months)
Resumen
Descripción
Due to the absence of a wastewater treatment plant treatment plant in the Guaqui town, wastewater is discharged directly to Titicaca Lake, causing serious water pollution. Through the construction of a sewage treatment plant, the water pollution will be reduced along with an improvement of the living conditions of the local population. However, as a result of frequent lake level fluctuations, the sewage treatment plant might suffer negative impacts from flooding. In addition, frosts during the cold winter months can affect the plant's main components such as (i) sewage collection network and sewer manhole, (ii) emissary, (iii) pumping sump, (iv) pumping line, (v) treatment plant, (vi) infiltration ditches.
Términos clave
- Wastewater treatment system
- sewage collection network
- emissary
- pump stations
- lake contamination
- Bolivia
- Floods
- frosts
Sectores de Intervención
- Salud
- Turismo
- Agua y saneamiento
Documentos
Imágenes
Perspectiva del riesgo
Amenazas que se producen debido a la degradación del medioambiente
Nombre de la amenaza
Contaminación del agua (superficiales y subterráneas)
Exposición
No está claro
Consecuencia
Laminar erosion of contaminated soils and effluent infiltration could result in contamination of surface and groundwaters to the detriment of uncovered populations
Probabilidad
Improbable
Alcance
Perjudicial
Importancia del riesgo
Riesgo bajo
Nombre de la amenaza
Degradación (tierra, suelo, ecosistemas, biodiversidad)
Exposición
Sí
Comentarios
Altiplano zone with various erosional processes caused by wind (60%) and water (40%), relief with slopes between 2 and 10%.
Consecuencia
Silting of network, pumping sump and treatment plant
Probabilidad
Probable
Alcance
Ligeramente perjudicial
Importancia del riesgo
Riesgo bajo
Amenazas naturales (hidrometeorológicas y geológicas)
Nombre de la amenaza
Crecidas repentinas, inundaciones
Exposición
Sí
Comentarios
According to the local hazard map, the water treatment plant is located in a flood prone area. Flood events occurred in 1986, 2002 and 2012. Approximately every 15 years.
Consecuencia
Damage of the wastewater treatment plant components such as pumping sump. Overflow of stabilization lagoons would contaminate crops near the plant
Probabilidad
Muy probable
Alcance
Sumamente perjudicial
Importancia del riesgo
Riesgo alto
Consecuencia
Damage to crops and animal fodder in surrounding areas due to flooding
Probabilidad
Probable
Alcance
Perjudicial
Importancia del riesgo
Riesgo medio
Nombre de la amenaza
Frío extremo
Exposición
No está claro
Comentarios
At the project site, between 90 to 180 days per year with frosts are observed, 3'835 m above sea level, average temperatures around 4°C, minimum temperatures until -10°C. It happens on average every 2 years.
Consecuencia
Problems in the operation of the plant and reduced efficiency of the oxidation lagoons
Probabilidad
Probable
Alcance
Perjudicial
Importancia del riesgo
Riesgo medio
Amenazas que se producen debido al cambio climático (y la variabilidad del clima)
Nombre de la amenaza
Cambios de frecuencia e intensidad de los fenómenos climáticos extremos y desastres relacionados (p.ej. olas de frío y calor, inundaciones, sequías, tormentas, huracanes, ciclones)
Exposición
No está claro
Comentarios
There are variations of extreme temperatures, mainly frost with a tendency to increase in the future
Consecuencia
It could affect the operation and efficiency of the wastewater treatment plant in oxidation lagoons
Probabilidad
Improbable
Alcance
Perjudicial
Importancia del riesgo
Riesgo bajo
¿Evaluación detallada de riesgos necesaria?
Perspectiva del impacto
Calcule el impacto en el medioambiente
Área medioambiental
Agua
Componente de la actividad
Wastewater treatment plant
Impacto sobre el medioambiente
Bad odors from the plant could disturb the surrounding population
Estime el impacto en los riesgos de desastres
Componente de la actividad
Wastewater treatment plant
Nuevo riesgo o riesgo agravado
Could be an incentive for the construction of new settlements in areas at risk from flooding
Calcule el impacto en el cambio climático
Componente de la actividad
Wastewater treatment plant
Impactos en el cambio climático
Greenhouse gas emissions from oxidation lagoons
Comentarios
Domestic sewage is untreated and are discharged into the fields/grounds and lake