News
14
2022
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09
Saudi Arabia to build new desalination plant with 100 percent renewable green hydrogen
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Saudi Arabia's visionary new city of Neom is under construction, reportedly 100 percent using renewable energy-green hydrogen desalination plants. The project will be built on top of OXAGON, an aquatic industrial park in Neom. One of OXAGON's goals is to ensure that all residents and industries use 100 percent renewable energy-green hydrogen-at an affordable price. This new desalination plant is an example of the type of sustainable infrastructure and circular economy that is being developed to achieve zero carbon footprint and zero waste.
01 built the city on the basis of desalination
Saudi Arabia's visionary new city of Neom is building a desalination plant that runs on 100 percent renewable energy-green hydrogen.
The project will be built on top of the Neom Aquatic Industrial Park OXAGON, which is expected to become the world's largest aquatic building with a population of 90000 by 2030.
Enowa, a Neom subsidiary focused on energy, water and hydrogen, has signed a memorandum of understanding (MoU) with Japanese trading company Itochu and water, waste and energy management solutions company Veolia to develop the project.
The desalination plant will use reverse osmosis technology and will have a desalinated water production capacity of 500000 m3/d, which can meet 30% of the city's total projected residential, industrial and commercial water demand.
One of OXAGON's goals is to ensure that all residents and industries use 100 per cent renewable energy, green hydrogen, at an affordable price.
A green hydrogen plant will start production in 2025 and is expected to be the first of several similar renewable energy plants to be established in a joint venture with Air Products and ACWA Power.
"We will produce, treat and reuse water in the world's most water-stressed regions through sustainable, innovative and comprehensive solutions," said Peter Terium, CEO of Enowa."
"This new desalination plant is an example of the type of sustainable infrastructure and circular economy we are developing to achieve our zero carbon footprint and zero waste goals," he continued ".
02 The ideal circular solution
Neom and OXAGON aim to bring together industrial 4.0 and the circular economy. New desalination plants are no exception.
According to the Saudi Press Agency, advanced membrane technology will be used in the production of desalinated water and its derived products, which will be developed and commercialized downstream.
The technology developed as part of this MoU and used to supply water to Neom can be exported to other countries to address global water scarcity.
Enowa plans to transport the recovered concentrated seawater (brine) to industries that use high-purity industrial salt, bromine, boron, potassium, gypsum, magnesium and rare metal raw materials.
Gavin Van Tonder, Executive Director of Enowa Water, said: "Our goal is to provide a blueprint for green and sustainable water production, management and treatment that can be used on a global scale.
"The technology developed as part of this memorandum of understanding and used to supply water to Neom can be exported to other countries to solve the global water shortage problem."
03 Building low-carbon integrated production
Green hydrogen is a key driver of decarbonized production and will be driven by cities and their low-cost renewable energy sources.
In February 2020, NEOM announced that it would use concentrated solar heat to desalinate seawater. The first "carbon neutral" seawater desalination plant was built by UK-based Solar Water Plc, which uses concentrated solar energy to heat a glass dome to accelerate seawater evaporation, with a production capacity of 50000 m3/d (see Public Number China Water Supply and Drainage: Saudi NEOM (New Future) City Plan: Pioneering Green Hydrogen and Water Networking).
In July 2020, Air Products, Acwa Power and Neom signed a partnership agreement for a $5 billion green hydrogen production facility.
In December 2021, Air Products awarded ThyssenKrupp of Germany to build the equipment, which is responsible for the design, procurement and manufacturing of the company's 20MW alkaline water electrolysis module plant. The design and procurement activities have now started and production is scheduled to begin in 2026.
The project will integrate 4 GW of renewable energy from solar, wind and energy storage, using ThyssenKrupp electrolysis technology to produce 650 t of hydrogen per day;
Using Air Products technology to produce nitrogen and Haldor Topsoe technology to produce 1.2 million tons of green ammonia per year is expected to reduce more than 3 million t of CO2 emissions per year.
Van Tonder said: "The advantage of Neom is that we are a whole body and can communicate with each other, rather than separate units. We will create local manufacturing and export industries from desalination and hydrogen production."
"With green hydrogen, we will be able to carry out many industrial processes, such as synthetic ammonia, fertilizer, steelmaking, and of course brine processing. The integration of brine processing and hydrogen production is the most critical and a bold move to activate the green hydrogen market."
Green hydrogen, seawater desalination
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