JPS62121241A - Dredging treatment apparatus - Google Patents

Abstract

PURPOSE:To work an apparatus efficiently, by organizing the apparatus, with an original mud tank for stirring liquid mud with removed coarse grains and fine grains, a coagulant feeder, and a centrifugal separator for dividing substance into muddy water, solid matter, and divided liquid and for discharging them, and by treating the substance continuously. CONSTITUTION:From muddy water sucked up by the jet pump 5 of a ladder suction pump vessel 1, coarse grains and the like are removed by a two-step vibrating screen 23 and a gravel classifier 24, and the muddy water is stirred and fed to an original mud tank 30 via a concentrating tank 28. After that, into the muddy water, lime for regulating PH through a lime dissolving tank and high molecular coagulant through a high molecular coagulant dissolving tank are respectively added, and separation efficiency is improved. By a centrifugal separator 32, solid matter is separated from liquid, and the solid matter is conveyed by a belt conveyor 43, and the liquid is restored into a reservoir or the like via a divided liquid tank 45. As a result, sediment in the reservoir or the like can be continuously and efficiently treated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a dredging processing device that can continuously process dredged muddy water into useful earth and sand, and particularly relates to a dredging processing device that can be optimally used for dredging a reservoir.

(Prior Art, Problems to be Solved by the Invention) Conventionally, there have been the following types of dredging processing means of this type, for example, dredging processing means for reservoirs.

First, there is a method of drying the reservoir, dredging the soil, and transporting it using trunks.

However, this method requires ■ water outage, ■
Requiring a drying period for the sediment in the reservoir after water outage;
■Since the soil has a high moisture content, during transportation by truck,
Muddy water leaks and makes roads dirty. There are problems such as.

The second method is to dredge with a dredger and transport the muddy water to a settling pond for treatment.

However, this second method cannot be used unless a dredger is brought in, ■ It cannot be used unless there is a sedimentation pond near the reservoir, and ■ The sediment in the sedimentation pond must be removed after a certain period of time. There are many problems such as not being able to transport it.

(Means for solving the problems) Therefore, in order to solve the above-mentioned conventional problems, this invention
A ladder suction pump ship, a vibrating sieve and a classifier that are supplied with muddy water discharged from the outlet of a sand pump discharge pipe extending from the pump ship, and remove coarse particles and fine particles from the muddy water, and these A raw mud tank to which mud from which coarse particles and fine grains have been removed by a vibrating sieve and a classifier are supplied and which stirs the supplied mud, a flocculant supply device, and a stirring system in the raw mud tank. A centrifugal separator is provided to which muddy water whose concentration is uniform and to which a flocculant has been added is supplied by a flocculant supply device, and which separates the supplied muddy water into solids and separated liquid and discharges each of them. Regarding dredging processing equipment.

(Example) Hereinafter, an optimal example of the dredging processing apparatus according to the present invention will be described based on the drawings.

(1) in the figure is a rudder suction pump ship.

This pump ship (1) has a hull (2) and a sand pump (3)
, main motor (4), jet pump (5), jet pump motor (6), winch (power (8), generator (9), control room (11, rudder aυ, sax 7 with suction adjustment cover) Yon head αz1 Suction pipe αj1 Jet ejector pipe (1a1 Jet ejector valve kasumi, water diversion pipe (te, sand pump discharge pipe αη, sand pump suction pipe α 臂 Jet bo/g discharge pipe housing 1, jet bong suction pipe kan) etc.

The pump boat (1) can move freely on the water surface by winching a wire CD whose free end is fixed at a predetermined location.

Further, the pump boat (1) excavates the accumulated earth and sand at the bottom of the water by jetting the water sucked up by the jet pump (5) and jetting it by the suction head αD. Then, the muddy water is sucked up by the sand pump (3) and transferred through the sand pump discharge pipe αD, and the muddy water is discharged from the discharge port @.

In the diagram (c) is a two-stage vibrating sieve, C4, that receives the muddy water.
is a Granbell classifier. The muddy water discharged from the discharge outlet device is supplied to the vibrating sieve (to) and the Granbell classifier (24) in that order. Then, the vibrating sieve (
) removes the coarse particles (c) from the muddy water, and the Gra/Bell classifier @ removes the fine particles ■ from the muddy water after the coarse particles have been removed, and the fine particles (c) It is conveyed to a predetermined location by a belt conveyor (5).

Also, in the figure (to) is a concentration tank. This concentration tank (
The coarse grains and fine grains are removed and the slurry water (mud water with fine particles of 5 cm or less) is supplied to the slurry tank (30), which is stirred and then supplied to the raw mud tank (30) by the pump (2). The mud water supplied to this raw mud tank (to) is further stirred to make the concentration uniform, and then supplied to the centrifugal separator 03 by the pump Oυ.

In the figure (c) is the lime dissolution tank. This lime dissolution tank (g)
Lime is added to the mud water that is being supplied from the raw mud tank (to) to the centrifugal separator G. In other words, it is used to adjust the pH of muddy water when it is acidic.

Further, C34) in the figure is a flocculant supply device. This flocculant supply device +1 (b) automatically adds a polymer flocculant to the muddy water being supplied from the raw mud tank (1) to the centrifugal separator G section.

A polymer flocculant is added to improve the separation efficiency in the centrifuge Ga.

In the figure, the can is the polymer flocculant dissolving device, (to) is the polymer flocculant dissolving tank, (9) is the hopper, □□□ is the compressor, (31 is the air dryer, the song is the pump, (4υ is the cleaning The water supply pipes are shown respectively.

Further, as described above, the centrifugal separator C12 is supplied with muddy water to which lime, a polymer flocculant, etc. have been added, and uses centrifugal force to separate the muddy water into solid matter and liquid, and discharges each of them. The discharged solid matter (42) is conveyed to a predetermined location by a belt conveyor (c).The liquid is transported to a predetermined location by a separating liquid pipe (42).
44) through the separation liquid tank (supplied to the pump 45)
It is returned to reservoirs etc.

Further, in the figure, αη indicates a cooling water pipe for supplying cooling water for cooling the centrifugal separator C33, and (9) indicates a discharge pipe for discharging the cooling water that has lost its cooling ability.

(Effects) The dredging treatment device according to the present invention configured as described above excavates accumulated earth and sand using a ladder suction pump ship, sucks up the muddy water, and sends the muddy water to a vibrating sieve and a classifier through the discharge piping for the sand pump. supply, removal of coarse particles and fine particles from the muddy water using these vibrating sieves and classifiers, stirring of the muddy water from which the coarse and fine particles have been removed in the raw mud tank, and homogenization of the concentration through the stirring. The continuous process of adding flocculant to muddy water using a flocculant supply device, separating the solid content and liquid from the muddy water after adding flocculant using a centrifugal separator, and discharging them can reduce sedimentation in reservoirs, etc. The unique effect is that dredging can be carried out efficiently and continuously.

Therefore, it can be used extremely effectively as a dredging processing device that can eliminate the need for conventional dredging processing means of this type.

[Brief explanation of drawings]

The drawings show an embodiment of the dredging processing apparatus according to the present invention, with FIG. 1 being a plan view and FIG. 2 being an elevational view. Explanation of main symbols in the figure... (1): Ladder suction pump ship, (1'7) Discharge piping for two-piece bong, 42 discharge ports, (23: Vibrating sieve, C4): Classifier, ( 7)
: Raw mud tank, (34) : Coagulant supply device, o'a: Centrifugal separator.

Claims (1)

[Claims] A ladder suction pump ship, a vibrating sieve and a classifier that are supplied with muddy water discharged from the outlet of a sand pump discharge pipe extending from the pump ship, and that remove coarse and fine particles from the muddy water. A raw mud tank to which mud from which coarse particles and fine grains have been removed by a vibrating sieve and a classifier are supplied and which stirs the supplied mud, a flocculant supply device, and stirring in the raw mud tank. A centrifugal separator is provided which is supplied with muddy water whose concentration is made uniform by a flocculant supply device and to which a flocculant has been added, and which separates the supplied muddy water into solids and separated liquid and discharges them respectively. dredging processing equipment