Hazen and Sawyer Designing Upgrades and Expansion of Colombia Plant

Project to Help Clean Contaminated Bogotá River

Salitre Wastewater Treatment Plant

(Santa Fé de Bogotá, Colombia – September 21, 2009) – Through international competition, The Corporación Autónoma Regional de Cundinamarca (C.A.R.) has selected Hazen and Sawyer to design upgrades to and expansion of the Salitre Wastewater Treatment Plant in Bogotá, Colombia. The goal is to identify and implement the solutions needed to reduce wastewater pollution and improve water quality in the middle basin of the Bogotá River.

The Bogotá River is a medium-sized river that flows along the western perimeter of Bogotá. Despite decades of planning, the Bogotá River remains highly contaminated and is an environmental and public health liability. The Salitre WWTP, currently a primary treatment facility, discharges into the river.

The strategy for improving the water quality in the Bogotá River will be implemented in a phased manner, beginning upstream and moving downstream. The first phase involves improving wastewater treatment in numerous small municipalities in the upper basin. The second phase focuses on upgrading and expanding the existing Salitre WWTP. The third phase consists of constructing a second WWTP downstream of Bogotá, referred to as Canoas (1,211,000 m3/d).

Services under this contract include the study of technical alternatives, preliminary engineering design, and bid documentation needed for procurement of a turn-key (design/build) contract for upgrading and expanding the Salitre WWTP from a 348,000 m3/d primary treatment plant to a 693,000 m3/d secondary treatment facility. In 1994 Hazen and Sawyer was retained by the International Development Bank (IDB) to evaluate the investment strategy prepared by the DBO contractor for the existing treatment plant.

This work is part of the Bogotá River Environmental Restoration Project that seeks to transform the Bogotá River from an environmental liability into an urban asset for the metropolitan region by improving water quality and creating a series of multi-functional parks along the river.

Bogotá is the capital of Colombia, as well as the most populous city in the country, with approximately 6.8 million inhabitants. Including its suburban area, the estimated population is 8.2 million. Bogotá’s altitude of 2,640m makes it the third-highest major city in the world, after La Paz, Bolivia and Quito, Ecuador.

Since our founding in 1951, Hazen and Sawyer has focused on two things: providing safe drinking water and controlling water pollution. Our range of services encompasses the planning, design, and construction management of water and wastewater-related projects – from clean water treatment, storage, and distribution to wastewater collection and treatment

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