Friday, April 30, 2010
"Biofilter", The New Toy of Kever Benjamin's Greens
The Australian Friends of the KKL (a Zionist organization) donated a green water project to the city of Kever Benjamin. The idea (from Australian Monash University) is to collect rainwater and purify it by biological filters (vegetation, bacterial layers, etc.) and store it in the aquifer. Then during the summer dry months, the water will be pumped back for irrigation.
The problem I see with the idea is that (1) it does not add to the current water availability in the country - the rainfall mostly infiltrates to the aquifer anyway and is pumped as drinking water, (2) the cost of the irrigation water so produced is exhorbitant, even discounting the cost of the infrastructure, which was a present. The cost of maintenance and pumping is much higher than the cost of desalinated water produced in Israel at 0.5 dollars per 1000 liter. The project is green, it is sited in a park, but completely useless and I can assure that it will not be maintained and it will be abandoned. Kever Benjamin municipality is unable to maintain and make work even the fountains in its central park, which are dry for years.