15:40 - 16:40
29 October 2020

A Wastewater Recovery Project for Power Generation

Significant Projects

This session will earn 1.0 PDH

Abstract:Quito, the capital of Ecuador, is home to approximately 1.9 million people and is located at an altitude of 2,800 meters- above -sea -level. Drinking water is available for 99.9% of the population and sewage for 95.8%. At the present, wastewater treatment is non-existent. The Quito Water and Sewer Authority, has embarked on an ambitious project to intercept contaminated discharges before they reach bodies of water by decontaminating the Metropolitan District of Quito’s rivers. This project will, treat the wastewater, and, as a substantial benefit of the project, generate electricity using raw and treated wastewater.

The project includes the following main infrastructure components:

  • A 12-foot diameter, 20-mile long wastewater tunnel interceptor.
  • A secondary wastewater treatment plant located 2,330 meters-above-sea-level, which will discharge an effluent at a standard fit for downstream use.
  • Three strategically located power generation facilities on the wastewater collection and treated wastewater discharge tunnels, with a total power generation potential of approximately 50 MW.

This is one of the largest greenfields wastewater treatment projects in South America, offering Quito the opportunity to develop a project based on sustainability principles of energy neutrality and resource recovery while improving the quality of life of its inhabitants though an integrated water recovery solution.

The project will be implemented at the equator, at an elevation of about 3000 meters above-sea- level, which presents substantial challenges in its design and contraction.

Learning Objectives:

  • How power can be generated using raw and wastewater
  • How the project manages the construction challenges of this location
  • Understand the key requirements for the design of a new municipal-scale wastewater treatment plant