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Offon Egypt
turns to science to mitigate water crisis
Among the most fertile of Egypt’s lands in Daqahleya
governorate, 48-year-old farmer Mohamed Awad used to plant rice at this time of
the year.
In 2020, however, he has been prevented from doing so by the
local authorities, as the Egyptian government moves to allocate only a certain
area of land to cultivate rice to decrease the country’s water consumption.
Awad said that rice is one of the best crops for farmers in
Egypt to grow in economic terms, but “due to the construction of the Ethiopian
dam, the government started to decrease the area cultivated with the water
consuming crop.”
Whilst ostensibly to save water, the decision has negatively
affected thousands of farmers across Egypt, like Awad, who have had to plant
other crops they are not used to.
Egypt is heavily dependent on River Nile water, which provides
about 97% of its present water needs. This still means that Egyptians can
access only 660 cbm per person, one of the world’s lowest annual per capita
water shares.
Meanwhile, Ethiopia is proceeding with construction on the Grand
Ethiopian Renaissance Dam (GERD), which Egypt believes will threaten its water
security.
The Egyptian government blames overpopulation for the
exponential increase in water demands. With the population expected to double
in the next 50 years, Egypt is projected to experience critical countrywide
fresh water and food shortages by 2025, according to a study conducted by the
Geological Society of America (GSA).
Over the next 30 years, Egypt’s population is estimated to reach
150 million which will lead to a decrease in the per capita share of water to
350 cm/year.
Minister of Water Resources and Irrigation Mohammed Abdel Aaty
explained that his ministry is bulking out on the amount of water available,
with 33% of Egypt’s water coming from recycled water resources. A further 55%
of the virtual water comes in the form of crops that are imported as
commodities and food items.
Egypt’s per capita share of water currently stands at below the
international standard of 1,000 cbm/year, with the country taking 600 cbm/year.
Despite the potential threat to accessing water from this source due to the
Ethiopian dam project, the country’s share of River Nile waters is stable.
Four-directive strategy
Ragab Abdel Azeem, Deputy Minister of Water Resources and
Irrigation, said that in order to meet the country’s water needs, the ministry
has set a strategy using four directives. These will develop water resources,
rationalise water use, purify water and protect it from pollution, whilst also
creating the appropriate environment for implementing these aspects.
Abdel Azeem noted that the ministry is working on implementing a
modern irrigation system as an alternative to flood irrigation. The Ministry of
Water Resources and Irrigation has also implemented programmes and campaigns to
educate farmers and citizens about the importance of balanced water consumption.
In addition to this, the ministry is undertaking several studies
to estimate Egypt’s underground reservoir, and its potential uses in
development without depleting this non-renewable natural resource.
“We have, in the past two years, started to implement the use of
solar energy for irrigation in underground wells instead of diesel,” Abdel
Azeem said.
The project started in the New Valley Governorate, with a
three-year plan to make all wells across the governorate solar-powered. The
project was also implemented in the Nile Delta governorates, to operate
irrigation systems using solar energy. A number of government buildings
nationwide are also being converted to using solar energy.
Drought tolerant crops
Researchers have identified new drought-resistant plant genes
that could cope with water scarcity. They have also looked into cultivating
rice, which could help in decreasing the salinity of the soil in Egypt’s
coastal governorates.
Said Soliman, Professor of Genetics at Zagazig University’s
Faculty of Agriculture, outlined one local experience relating to
environmentally viable rice cultivation. Soliman has gained long-term
experience in developing new species of rice that resist drought and use less water
during cultivation.
He said that he has developed a variety of rice, which was given
the name “Oraby” in honour of the political leader Ahmed Oraby and who is
Zagazig University’s symbol.
This new variety of engineered rice only takes about 120 days to
grow, compared to the 145 days for normal rice. He added that the Oraby rice
variety can be cultivated twice yearly.
It can also be cultivated on all types of land, with successful
cultivation experiments having been undertaken using the sandy soils of Toshka,
as well as in clay soil. According to Soliman, there are several other benefits
to the new variety of rice developed at Zagazig University.
Not only is Oraby rice considerably more productive than normal
varieties, it is also possible to cultivate 2m feddan of Oraby rice using the
same amount of water as that needed for 1m feddan of normal rice.
Desalination
Another solution to mitigating the water access crisis is the
use of desalinated water. This would see a dependence on groundwater as well as
the desalination of seawater to meet the domestic demand for water.
Late in 2019, the government established the Alamein
desalination plant, located on the Mediterranean Coast. The plant expects to
produce 150,000 cbm/day of drinking water from desalinated seawater.
A recent study noted that the domestic water sector is one of
the largest users of water in Egypt, consuming more than 16% of the country’s
total renewable water resources.
Egypt is urgently in need of a plan to offset the increase in
current domestic water consumption, from around 9.2bn cbm in 2016 to about 15bn
cbm of water by 2040. This would use alternatives to River Nile waters,
according to findings of a study published in the American Journal of
Engineering Research (AJER).
According to the study, domestic water in Egypt is taken from
two main sources. The first source is surface water, which supplies about
88.99%, with the second source being groundwater, which supplies about 10.77%
of total demands. A further 0.24% is taken from sea water desalination plants.
The major factor affecting the amount of diverted water for domestic use is the
efficiency of the country’s delivery networks.
“Groundwater and seawater desalination are together a promising
source for meeting the future water needs of Egypt. By 2040 Egypt will need
additional 5bn cbm to meet the domestic use of water to reach the needed amount
15 bn cbm,” said Osama Sallam, the author of the study and researcher at the
Egyptian National Water Research Center, and Water Projects Manager, at the
UAE’s Environment Agency.
Sallam added that Egypt’s groundwater stock is fresh with low
levels of salinity, allowing for the future domestic water demands to be met.
He noted that it is also cheaper than seawater desalination methods.
The process of seawater desalination is very expensive, with the
cost of desalinating 1 cbm of water currently stands at $1,000. This is in
addition to the other operating and maintenance costs.
This process, however, is a promising source of water for
coastal governorates particularly as Egypt relies on cheaper sources for energy
that will help in decreasing the cost of desalination.
Harvesting water from desert air
A total of 97% of Egypt’s land is desert, found in Sinai as well
as the Eastern and Western Deserts, with only a restricted line of fertile
lands available hugging the River Nile.
For arid countries like Egypt, scientists at the University of
California at Berkeley have developed a device that produces water from dry
desert air, using only sunlight. The method is dependent on developing a
molecular powder, a metal–organic framework (MOF), that is highly porous and
acts like a sponge to absorb water.
According to the study published in Science Advances Journal,
the powder saturated with water during a moist and cool night after it was
packed in a frame at a plexiglass box. After this step, it releases water as
sunlight heats it during the day, resulting in water condensation on the sides
of the box which was kept open at night and closed in the day.
ICAR appoints 2 SKUAST-K professors as Emeritus
Scientists
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