Israel has long suffered from severe water shortages due to its arid climate
and a scarcity of natural water resources. It’s no surprise then that Israeli
firms have become leaders in water technology and the country as a whole purifies and reuses almost 70 percent of its wastewater each
year for agriculture.
“Wastewater was a big headache that everyone tried to get rid of,” explains
Oded
Distel, director of the Investment Promotion Center for the Israel NewTech, a
government entity charged with promoting Israeli technologies abroad. “In Israel
we look at it as a resource. We treat wastewater on a national level and it is
one of the main sources of water for agriculture in the country.”
Now, Israeli businesses are looking to export their experience with water
technology – from wastewater treatment to drip irrigation – to mitigate the
serious threats to India’s Ganges River.
In the past year, Israel NewTech has sent two delegations to India, its second largest trading
partner, to promote its water technology to government officials, scientists and
engineers.
A Sacred River turns into a Mess
Much of the river’s pollution comes not only from industrial and agricultural
waste but from direct human contact. The Indian government estimates that
roughly 40,000 bodies are cremated on the banks of the river using 15,000 tons
of wood each year, spewing ash, unburnt wood and flesh into its waters. The
river’s once blue-green hue has now become black and tar-like in some spots and
studies show
that it contains 60,000 fecal coliform bacteria per 100 milliliters, 120 times
greater than is considered safe for bathing.
The Ganges River provides India with more than 25 per cent of India’s total water resources. The river is considered sacred for Hindus, who believe its waters represent the goddess Gaṅgā. It is also consistently ranked as one of the filthiest rivers in the world.
The Indian government plans to eliminate the untreated municipal sewage or
industrial runoff entering the Ganges by 2020 through the Ganga Action Plan. But
previous attempts to clean up the river have failed because of bureaucratic
hurdles and a lack of funds – the cleanup is expected to take decades and cost
$20 billion.
The project has become more urgent as the Ganges has receded because of
unregulated water extraction for farming, cities, industry and other uses.
Additionally, many suspect that climate change is melting away the Himalayan
glaciers, the main source of the river’s flowing waters.
Wastewater treatment
Israel’s greatest innovations in recent years have come in the areas where India is most lacking, notably wastewater treatment.
“Waste water treatment facilities are a big consumer of energy globally and whenever you are able to minimize the amount of energy you use there, it’s a big, big advantage,” Distel says.
For example, the Israeli company Mapal Green Energy has developed a technology that provides
oxygen to the bacteria that eat pollutants from floating aeration units. The
company claims that the units save up to 70 percent in energy consumption and up
to 80 percent in maintenance costs compared with current technologies.
Another technology Distel hopes can be used for the Ganges River project is
Emefecy’s “zero energy”
wastewater bioreactor. Emefecy’s Electrogenic Bioreactor (EBR) treats wastewater
and produces green electricity as a byproduct. The EBR functions as a battery
which uses wastewater as fuel.” General Electric is among the main investors in the start-up,
along with NRG Energy and ConocoPhillips, through a vehicle called Energy Technology
Ventures.
Drip Irrigation
A key component of the river renewal project is ensuring that farmers who
live near the river use environmentally sound growing practices.
“Once you introduce technologies to make irrigation much more efficient and
you allow the farmers to use less water from the river itself for their crops,
then you basically save and clean the river at the same time,”Distel says.
Modern drip technology, where small quantities of water are released on
intervals via long plastic tubes that go directly to the plant itself, was
pioneered in Israel in the 1960s. Today, Israeli firms such as Netafim as well
as the joint Indian/Israeli venture NanDanJain, have been active in the river cleanup discussions
and were among participants in the delegation to India.
Amnon Ofen, a director at NaanDanJain, says that there are 150 million small
farmers in India with less than one acre to call their own, meaning that many of
them lack the resources and education to work with drip irrigation by
themselves.
“Most of them depend on monsoon, they don’t have regular irrigation,” Ofen
said.
NaanDanJain company has worked with the Indian government to develop
programs to introduce drip irrigation to individual farmers.
It’s technologies like these that could preserve the Ganges for future generations.
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