Desalination plant | |
---|---|
Location | Bethanie, ǁKaras Region |
Coordinates | 26°30′29″S17°08′34″E / 26.50806°S 17.14278°E |
Estimated output | 487 cubic meters (487,000 L) of water daily |
Cost | US$2.3 million |
Technology | Reverse osmosis, Chlorination |
Percent of water supply | Estimated 100% of Bethanie Town Council |
Operation date | July 2022 |
The Bethanie Desalination Plant, also Bethany Desalination Plant, is a brackish water desalination plant in the settlement of Bethanie, in Namibia. [lower-alpha 1] The facility is owned and was developed by the Namibia Water Corporation (NamWater). The potable water produced by this plant, whose capacity production is 487 cubic meters (487,000 L) per day, is expected to supply the town of Bethanie until 2037. [1]
The desalination plant is located in the town of Bethanie, in the ǁKaras Region of Namibia. Bethanie is located approximately 140 kilometres (87 mi), west of Keetmanshoop, the capital of ǁKaras Region. [1] [2] Bethanie is located approximately 535 kilometres (332 mi) south of Windhoek, the capital and largest city in the country. [3]
The objective of this project is to improve the quantity and quality of drinking water available to the inhabitants of Bethany. It was developed as a pilot project to explore the feasibility of desalinating brackish ground water for domestic and light commercial use. This is part of the Namibian government's attempt to increase water supply to Namibians, from 85 percent in 2022 to 100 percent. [4] [5] Namibia has set a goal to have 100 percent potable water supply to her citizens and residents by 2030. [6]
The plant is designed to process raw brackish ground water through desalination equipment that includes reverse osmosis membranes. Due to the rural location, renewable energy sources were selected. The installation is fitted with solar panels, so that the sun provides the power to fuel the desalination process. [1] [5]
A number of national and international stakeholders worked together to design, construct and fund this desalination plant. The table below details the entities that supported this development. [1]
Rank | Member | Domicile | Notes | |
---|---|---|---|---|
1 | NamWater | Namibia | National water parastatal utility company. Owner/Operator | [1] |
2 | Desert Research Foundation of Namibia | Namibia | National research institution | [1] |
3 | Adaptation Fund | United States | International climate change organization | [1] |
4 | Namibian Ministry of Environment, Forestry and Tourism | Namibia | Namibian Cabinet Ministry | [1] |
The construction is reported to have cost N$37 million (approx. US$2.3 million), funded by the stakeholders listed in the previous section. Construction took place between "October 2020 and October 2021", with commercial commissioning in July 2022. [1] [4] [5]
Osmotic power, salinity gradient power or blue energy is the energy available from the difference in the salt concentration between seawater and river water. Two practical methods for this are reverse electrodialysis (RED) and pressure retarded osmosis (PRO). Both processes rely on osmosis with membranes. The key waste product is brackish water. This byproduct is the result of natural forces that are being harnessed: the flow of fresh water into seas that are made up of salt water.
Aus is a settlement in the ǁKaras Region of southern Namibia. It lies on a railway line and the B4 national road, 230 km west of Keetmanshoop and about 125 km east of Lüderitz and belongs to the ǃNamiǂNûs electoral constituency. Trains from Keetmanshoop now end their journey at the village but formerly continued on to Lüderitz. The settlement is small but has a number of amenities including a hotel, police station, shop and garage. It is located in the Aus Mountains above the plains of the Namib Desert. The climate is usually hot and arid but snow has been recorded in the winter of 1963, and the area features the coldest winters recorded in Namibia.
Australia is the driest habitable continent on Earth and its installed desalination capacity has been increasing. Until a few decades ago, Australia met its demands for water by drawing freshwater from dams and water catchments. As a result of the water supply crisis during the severe 1997–2009 drought, state governments began building desalination plants that purify seawater using reverse osmosis technology. Approximately one percent of the world's drinkable water originates from desalination plants.
Namibia is an arid country that is regularly afflicted by droughts. Large rivers flow only along its northern and southern borders, but they are far from the population centers. They are also far from the country's mines, which are large water users. In order to confront this challenge, the country has built dams to capture the flow from ephemeral rivers, constructed pipelines to transport water over large distances, pioneered potable water reuse in its capital Windhoek located in the central part of Namibia, and built Sub-Saharan Africa's first large seawater desalination plant to supply a uranium mine and the city of Swakopmund with water. A large scheme to bring water from the Okavango River in the North to Windhoek, the Eastern National Water Carrier, was only partially completed during the 1980s.
The Baynes Hydroelectric Power Station is a planned 600 megawatts (804,613 hp) hydroelectric power plant in northwest Namibia, at the border with Angola.
The Kokerboom–Auas High Voltage Power Line, also Keetmanshoop–Dordabis High Voltage Power Line, is a high voltage electricity power line, under construction, connecting the high voltage substation at Kokerboom, near Keetmanshoop, in the ǁKaras Region to another high voltage substation at Auas, near Dordabis, in the Khomas Region of Namibia.
Sfax Desalination Plant is a sea water desalination plant under construction in the city of Sfax in Tunisia. The facility is under development by the Tunisian water utility company, National Company for the Exploitation and Distribution of Water (Sonede).
The Erongo Desalination Plant, also known as the Orano Desalination Plant, is a sea water desalination plant in Namibia. The facility was constructed between 2008 and 2010 by Orano Mining Namibia, which at the time was known as Areva Resources Namibia. The desalination plant was established to supply water to Orano’s Trekkopje Uranium Mine. At the time this plant was commissioned, it was the largest reverse osmosis desalination plant in Southern Africa.
The Mariental Solar Power Station is a 45.5 MW (61,000 hp) solar power plant in Namibia. The project is owned and was developed by a consortium of various IPPs and the Namibian electricity utility company, NamPower.
Jordan Desalination Plant is a planned sea water desalination plant in the city of Aqaba in Jordan. The facility is under development by the government of Jordan, with the aim of narrowing the water deficit in the country. Bids for the engineering, procurement and construction (EPC) contract were advertised. In June 2021, thirteen international consortia responded and five of them were shortlisted to advance to the next bidding stage. Construction of the desalination plant is budgeted at approximately US$1 billion and is expected to take approximately five years.
The Khan Solar Power Station, is a 20 megawatts (27,000 hp) solar power plant under construction in Namibia. The project is owned and under development by Access Aussenkehr Solar One Namibia a Namibian independent power producer (IPP), based in Windhoek, the country's capital city. The energy generated here will be purchased by NamPower, the national electricity utility company, which is wholly owned by the government of Namibia. A 25-year power purchase agreement (PPA), governs the terms under which the energy will be sold and bought.
The TeraSun Energy Solar Power Station is a planned 81 megawatts solar power plant in Namibia. The power station is owned and is being developed by a consortium comprising Natura Energy, a Namibia-based energy company and Globleq Africa Limited, an independent power producer (IPP), headquartered in the United Kingdom.
The Diaz Wind Power Station, is a 44 MW (59,000 hp) power plant under construction in Namibia. The power station is under development and is owned by Diaz Wind Power, a joint venture company owned by (a) United Africa Group and (b) Quantum Power. The energy generated at this wind farm will be sold to NamPower, the national electricity parastatal company of Namibia, under a 25-year power purchase agreement (PPA).
The Mamelles Desalination Plant is a sea water desalination plant under construction in the city of Dakar in Senegal. The facility is under development by the government of Senegal, with financial support from the Japan International Cooperation Agency (JICA). The Senegalese national water company, SONES, is developing the project on behalf on the Senegalese government, and the Japanese private company Nippon Koei, is developing the project, on behalf of JICA. Construction started in June 2022, at a budgeted cost of €200 million and an expected output of 50,000 cubic meters (50,000,000 L) of desalinated potable water every day in the first phase, expandable to 100,000 cubic meters (100,000,000 L) daily, in the second phase.
The Kokerboom Power Station, is an 18.5 megawatts solar power plant under development in Namibia. The public private partnership (PPP) development project is owned by Alpha Namibia Industries Renewable Power (ANIREP), a Namibian independent power producer (IPP), who was awarded the concession in June 2022, to design, construct, finance, own, operate and maintain the power station. The energy off-taker is "Dundee Precious Metal", a Canadian mining company, for use in its mining operations in the area. This is possible via the national grid "through a modified single-buyer model", under Namibian laws.
The Rosh Pinah Wind Power Station, is a planned 40 MW wind-power plant in Namibia. The wind farm is under development by Namibia Power Corporation Limited (NamPower), the Namibian electricity parastatal company. This wind farm is intended to increase Namibia's energy generation mix. An environmental impact assessment study by the consulting firm Enviro Dynamics, has been ongoing since 2020 and will inform the management of this renewable energy project.
Anna Ndahambelela Shiweda is a member of the Namibian legislature and a deputy minister of Agriculture, Water and Land reform since 2015. She served as member of National Assembly from 2015 to 2020.
The Cerim Luderitz Wind Power Station, is a 50 MW (67,000 hp) power plant that is being developed in Namibia. The power station is under development and is owned by Cerim Luderitz Energy, a joint venture company owned by (a) China Energy Engineering Corporation (CEEC) and (b) Riminii Investments, a Namibian company. The energy generated at this wind farm will be sold to NamPower, the national electricity parastatal company of Namibia, under a 25-year power purchase agreement (PPA).
The Namwater Desalination Plant, is a sea water desalination plant under development in Namibia. The facility is being developed by Namwater, the national water utility parastatal company of Namibia. It is intended to address the severe water scarcity in the middle Namibia coastal area, in the Erongo Region, and in the capital city of Windhoek.