Dredging in the Harbor

Landshark

Landshark

Guest
jerry said:
Big piles diesel soaked sand next to Unconscious....what can go wrong
Click to expand...
I assume they're referring to the dump along the Caborca highway in front of LC. Never have understood why they made a dump in front of one of the nicest developments in town and where it would be the "Wecome to Puerto Penasco" sign for the visitors arriving from the international airport.
 
jerry

jerry

Guest
"As a first step, dredged material is separated into a usable sand portion and a contaminated silt portion in separation fields or by dewatering or in hydrocylones. The resulting contaminants then need to be reduced, removed or immobilised before the dredged material can potentially be considered as a resource. Treatments include: - Chemical immobilisation is when contaminants are bound by adding clay, cement, lime or fly ash. - Thermal immobilisation causes organic contaminants to be broken down at high temperatures. Products such as bricks, artificial gravel and artificial basalt can then be created. These are costly processes and are therefore not widely used at present. - Bioremediation techniques include using micro-organisms to degrade contaminants. This technique is in an experimental stage. - Biodegradation of organic contaminants can also be stimulated by aeration and spreading materials out over large tracts of land. This has practical limitations in densely populated areas where land is at a premium. Clearly whilst using contaminated sediments is more complicated because of the costs and time involved in treatment, it should not be ruled out or overlooked and the cost of treatment should be weighed against the costs of other disposal options. " from the internet...
 
Wood Spinner

Wood Spinner

Guest
The harbour bottom looks like a bomb range. But is getting deeper in some areas.
The Intrepid did run aground about a week ago.
 
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