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Building Green in the Desert: Water Reuse Plan for a University in Karachi, Pakistan

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The Aga Khan University Faculty of Arts and Sciences (AKU-FAS) campus will be constructed in multiple phases on an undeveloped 226 hectare 50 kilometers east of Karachi, Pakistan. Given the limited water resources in the region, it was critical to develop a sustainable water management plan. The design team worked collaboratively to balance the water use for the project. In addition to the adoption of water conservation measures, reclaimed water blended with rooftop runoff will be used for irrigation, toilet flushing, fire protection, and aesthetic water features. A multi-stage reverse osmosis water treatment plant will treat brackish groundwater. Wastewater will be treated to US standards for “urban reuse” using an oxidation ditch and tertiary filtration system. In the civil infrastructure: water, wastewater and stormwater are recycled. With perhaps the sole exception of the concentrated brine solids, nothing will be discharged off site.
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Keywords: Pakistan; oxidation ditch; reclaimed water; reverse osmosis; sustainability; water reuse

Document Type: Research Article

Publication date: 2009-01-01

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