c 1997-2009 RERA

All right reserved. Any Unauthorized Copying or Using Prohibited.

NEW PROCESS FOR
IMPROVEMENT OF
CONTAMINATED
SEDIMENTS
BY SUCCESSION
OF MICRO-BIOTA

2nd
INTERNATIONAL
CONFERENCE on
COTAMINATED
SEDIMENTS.
Rotterdam
Netherlands.
September 7-11
1997

EXAMPLES.

Farming pond (Penaeidea culture pond)

The contaminated sediments in the Penaeidea culture pond located in Ishigaki Island, Okinawa Prefecture were given succession treatment with a bioreactor in 1990, thus successfully preventing marine pollution, 1990.

Photo 1: Bio-reacter in Penaeidea culture pond 1992.

Figure 4: The cross section of the Penaeidea culture pond

Figure 5: The flow of the succession establishments.

1:bulkhead and intake gate 2:Seawater 3:Sand bed 4:Groove 5:Organic contaminated sediments 6: Sand pit 7:Bioreater 8:Sand filter 9:Out flow

On-site treatment (sediment control dam)

The contaminated sediments accumulated in the sediment control dam located in Togi Town, Ishikawa Prefecture ran into the sea owing to rain in 1985, causing marine pollution. As a countermeasure against this pollution, an aerator and other devices were installed in the dam from sediment control and the physical properties of the contaminated sediments were changed within the dam, thus successfully preventing marine pollution downstream, 1985-1990

Photo 2: The establishments in sediment control dam, 1985

Figure 6: The image figure of the establishments in the dam

1:Sediment control dam 2: Contaminated sediments 3:Baffle plate 4:Aeration

.Contents. .Previous. .Next.