Bubble-Greenhouses useful in water desalination
Invented by Australian researchers, water desalination tools called “Bubble-Greenhouses” became one of the latest technologies in agricultural production. The greenhouses attract attention both because of their futuristic look and the opportunities they offer.
Differences between traditional desalination and the Bubble
Each bubble-shaped greenhouse is accompanied by two external columns housing the water desalination mechanism. It uses the unique property of salt water which prevents the small bubbles joining to form big bubbles. Placing the condensation towers outside the greenhouse makes it possible to use hotter air stream, making desalination more efficient. What is more, the salt extracted from the water does not gather in the installation, minimizing the maintenance cost.
Other benefits from the bubble
Thanks to the spherical shape sealed off from external factors, the crops inside are safe from parasites and other diseases which damage traditional plantations. The possibility of maintaining constant humidity inside the sphere helps to cut down on water consumption. The bubble can therefore be very efficient. A mechanism that takes up 150 square meters can produce 8 cubic meters of water and as much as 30 kilograms of food.
On the one hand, the improved efficiency and economics of water desalination deserve praise. On the other hand, experts question the crop efficiency in the Bubble-Greenhouses. The cost per every 1,000 kg of water produced and 10 kilograms of crops is 10 dollars. Is it enough for the cultivation of staple crops, such as cereals?
A futuristic step
The current shape of the Bubble is in need of improvement, but the technology marks a step ahead in water desalination procedures. It might therefore become an opportunity for countries and regions lacking access to sweet water, such as Malta and the Gaza Strip. Combining water desalination with plant cultivation offers an excellent alternative if such factors as famine or dependence on food importation are taken into consideration.