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Plan of the testing flume and the settling basin:
Side view of the testing flume and the settling basin:
The testing flume:
The Coanda effect screen:
The settling basin, the left part is for the diverted flow and the right part for the by-pass flow:
Accumulation of excluded sediment on the screen, 0.5 mm aperture screen, sediment test with 5 l/s:
  
Accumulation of excluded grass on the screen, 0.5 mm aperture screen, grass test with 10 l/s:
  
Accumulation of excluded grass on the screen, side view:
Self-cleaning effect, the screen self-cleans the grass spears without any external intervention (left picture is during grass feeding, middel picture is 9 min after grass feeding stopped, right picture is 1 h after grass feeding):
  
Settling basin during grass test, left part is for diverted flow, right part is for by-pass flow and excluded grass:
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