Automated Sludge Removal With High-Density Dredger

Category:

Dredge Plant

Description:

The dredger "Shin Ohmoto Maru" is equipped with a newly developed, input/output balance type

sludge collector to suck sludge by negative pressure, an automatic controller, and kick-spud-type

position control equipment. Combined with an operation control system to maximize the

dredger's performance and a GPS-aided construction control system, the vessel is capable of

performing efficient, high-density, automated dredging, while digging to design depth.

The fully automated control system is operated by two computers, consisting of four systems,

each responsible for control of:

1) Suction pump.

2) Sludge discharge pump.

3) Swing speed.

4) Advance by kick spuds.

The control systems for the sludge discharge pump and the advance by kick spuds can work

independently.

Reviewer:

C. Woolley

Company / Organization(s):

Projects Completed:

Lake Kojima

Location:

Lake Kojima, Japan

Completion Date:

1996 -2003

The Shin Ohmoto Maru has removed 220,000 m3 of sludge from the lake

Comments:

as of 12/97.

Information Sources:

Literature:

Title:

"Automated Sludge Removal By Using High Density Dredger"

Author:

S. Hara, Y. Hayase, H. Fujisawa, T. Hara, S. Satoh

Month:

June

Year:

1998

LitType:

Report/Proceedings

Publisher:

WODCON XV, Las Vegas

Page:

163

Chapter 5 Other Technologies Reviewed