of PNEUMA plant for dredging hydro-electric basins and dams:
PNEUMA Dredging System is highly convenient for this application because of
the following main advantages:
- Can be easily operated, also when dredging should be carried in very deep
water (100 m. and more) from a standard dismountable pontoon,
transportable by trucks
- High solids content in the dredged mixture, thus allowing considerable saving
of the basin's water during dredging operation
- Neither mechanical moving parts nor cutters are in contact with the bottom
material, thus the bottom does not become disturbed. Therefore
dredging can be carried out close to the water intakes avoiding
possible damages to the turbines.
- Reflowing of the dredge mixture at long distances and considerable elevations.
-Possibility of dredging in presence of logs on the bottom, by using longer
inlet pipes, which work astrid the log, or by using a single
hydroelectric basin - Switzerland
DAM - ULSAN - KOREA
with direct reflow of the mixture on concrete decantation basins.
The very high concentration of the mixture permits the economical
transportation to the final dumping site by means of tank trucks
with vacuum system, so avoiding the utilisation of expensive dewatering