ACWA Wins Prestigious University Contract
26 April 2011, News release from ACWA Services
ACWA's extensive expertise in Middle East water and wastewater projects has won the company a prestigious contract to provide a complete solution for a fast-track irrigation water project in Saudi Arabia's economic, cultural and administrative capital.
Construction of Riyadh's Princess Noura bint Abdul Rahman University for Women (PNUFW) was personally initiated by King Abdullah, and will include a vast expanse of landscaping and tree planting which will require 11,000m3/day of irrigation water, equivalent to a 44,000PE demand.
The desert city's precious potable water resources are pumped over 350km from thermal desalination plants on the Arabian Gulf coast. Because potable water is so scarce, the irrigation water must be provided from alternative sources. ACWA was commissioned to determine the optimum solution because of its acknowledged technical expertise and excellent reputation in the region.
Ultimately the company recommended that irrigation be provided via a mix of desalinated water from the deep, saline aquifer that lies beneath the city and highly-treated wastewater.
ACWA's remit also involves construction of the RO desalination plant that will treat the water from the two wells accessing the aquifer, which are likely to be as much as 1700m deep. Cooling towers will initially reduce the groundwater temperature from 70ºC to 35ºC before it passes through a mixed-media filter bed to remove any significant particulate matter and this is followed by several stages of RO treatment. An optimal multi-stage process is being used to maximise the efficiency of treated water recovery and minimise reject water.
The contract also involves providing the specialized submersible pump stations required to abstract the hot water from the two deep wells, which are currently being drilled, as well as the cooling towers for the temperature control process and all process and M&E instrumentation.
The company will additionally provide the PLC system that controls the irrigation system's flows and blending process, which will satisfy a stringent final water quality requirement of a TDS below 800ppm. To ensure the water meets its quality and temperature requirements, online sensors will be installed and an on-site laboratory will be constructed to analyse water samples on a daily basis.
The contract was awarded on an extremely competitive delivery schedule and the client requires completion from design to finished construction on a fast track basis. The entire university project has been extremely fast track, with the three million square metre campus having a construction phase of just some two years.
The PNUFW is not the first high profile university contract undertaken by ACWA. Previously the Company won a 12,000 m3/d MBR project for the King Abdullah University, KAUST in Jeddah which was completed in 2010.
ACWA's Territory Business Manager, Raied El Shanti says: "Because of the challenging and prestigious nature of the project, all of the equipment will be sourced from best-in-class providers from around the world. The key requirement is to provide reliable solutions that minimize the risk of shutdown and provide the longest possible lifetime. Quality is paramount. The system will have multiple redundancy and a very high level of automation, to make absolutely certain that there will be no interruptions to this critical water supply with minimal human intervention."
For further information please email ACWA Services