JPH06102126B2 - Sludge recovery device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sludge recovery device for recovering sludge settling at the bottom of a pond or a moat.

[Prior Art] Generally, sludge settling at the bottom of a pond, a moat, etc. causes deterioration of water quality, and a method of efficiently removing these sludges is desired. In particular, in a fish pond (fresh water or seawater) where fish is cultivated, dirt on water interferes with the growth of the fish, which is a serious problem.

Conventionally, as this type of sludge recovery device, a vacuum pump simultaneously absorbs water and sludge from the bottom of a pond or moat,
Solid-liquid separation was to be performed using a wastewater treatment facility installed on the ground.

[Problems to be Solved by the Invention] However, in the above-described conventional example, a large-scale sewage treatment facility is required, the facility cost becomes high, and it is necessary to secure a place for installing the sewage treatment facility on the ground. There was a problem that the cost was high. Further, there is a problem that the work for disposing of the collected sludge is troublesome.

The present invention has been made in view of the above points, and an object of the present invention is to reduce the facility cost and to save cost by eliminating the need to secure a place for wastewater treatment on the ground. The present invention aims to provide a sludge recovery device that can achieve the above-mentioned effects, can easily treat the recovered sludge, and can increase dissolved oxygen due to the aeration effect.

[Means for Solving the Problems] In the sludge recovery device of the present invention, a pump for sucking water from a bottom such as a pond or a moat is attached to a float capable of moving the water surface,
A long sludge recovery hose, which is made of a temporary material having numerous pores and has one end closed, is connected to the water discharge port of the pump, and the hose is arranged near the water surface.

[Operation] The present invention is configured as described above, and a pump for sucking water from a bottom such as a pond or a moat is attached to a float that can move on the water surface. A long sludge recovery hose with a closed plug is connected to the water discharge port of the pump, and the hose is arranged near the water surface. Therefore, the facility cost can be reduced, and it is not necessary to secure a place for the treatment of wastewater on the ground, so that the cost can be reduced. Further, since the recovered sludge is concentrated and packed in the hose, it can be easily carried out as it is, and sludge treatment can be easily performed. Furthermore, since the hose is placed near the surface of the water, the water leaking from the pores of the hose will be released into the air in the form of mist and returned to the pond, moat, etc., and the dissolved oxygen due to the aeration effect can be increased. The additional effect is also obtained.

Further, if the hose is arranged on the raft-shaped float and the float is formed so as to obtain a buoyancy force greater than the sludge weight that can be recovered by the hose, the recovery efficiency and the aeration effect can be stably maintained. .

Furthermore, if the hose is formed of a cloth having pores of 100 mesh to 300 mesh, the sludge can be efficiently collected without lowering the water absorption capacity of the pump.

[Embodiment] FIGS. 1 and 2 show an embodiment of the present invention.
Pump the water from the bottom of the pond, moat, etc.
Is attached to a float 2 that is movable, and a long sludge recovery hose 3 formed of a transient material having numerous pores and closed at one end is connected to a water discharge port of the pump 1,
The hose 3 is arranged near the water surface. In the embodiment, the float 2 has a raft shape, the hose 3 is arranged around the raft, and the weight of sludge that can be collected by the hose 3 or more The raft-shaped float 2 is formed so as to obtain the buoyancy. The hose 3 is formed of a cloth having pores of 100 mesh to 300 mesh (for example, cotton that can be discarded as it is). When using a general pump 1 (150 to 300 μ / min), it is desirable that the hose 3 has a diameter of 4 cm or more and a length of 5 m or more in order to maintain the water absorption capacity of the pump 1. . Furthermore, although the float 2 is movable by the mooring rope 5 in the embodiment, it may be a ship equipped with a self-propelled moving device such as an engine or a motor. Further, the float 2 may be separately provided for the pump and the hose. In the figure, 6 is a power supply line made of a captyre cord, 7 is a water suction hose equipped with a metallic strainer 7a at the tip and connected to the water suction port of the pump 1, and is set to reach the bottom of a pond or a moat. There is.

The operation of the embodiment will be described below. Now, the pump 1 that sucks water from ponds and moats together with sludge from the bottom,
It is attached to the float 2. By operating the mooring rope 4 from the ground, the float 2 is moved and moored at an appropriate place, and the pump 1 is operated until the hose 3 is filled with sludge (for example, several hours). To do. Here, the hose 3 for sludge recovery, which is connected to the spout of the pump 1,
Since it is made of a temporary material having innumerable pores and one end thereof is closed, water and sludge are discharged from the water discharge port of the pump 1 into the hose 3 with a predetermined discharge pressure. Then, the water leaks through the numerous pores formed on the tube surface of the hose 3, and the sludge is excessively collected. At this time, the water leaking through the pores of the hose 3 becomes mist and is discharged into the air and returned to the pond or moat, so that the dissolved oxygen can be increased by the aeration effect and two birds with one stone and two birds can be found in the fish pond. Has the effect of. It goes without saying that there is a remarkable effect particularly in aquaculture ponds of bottom fish such as "hirame" and "karei" which are easily affected by sludge.

Further, since the hose 3 which constitutes the sludge collecting means is made of cloth and is inexpensive so as to be disposable, the facility cost can be extremely reduced, and since the hose 3 is arranged near the water surface, the sewage on the ground can be reduced. There is no need to secure a special place for processing, and it is possible to reduce costs. Even if the hose 3 is submerged, the sludge can be excessively collected, but the collection efficiency is deteriorated due to the influence of water pressure applied to the hose 3 depending on the depth. It is desirable to install the hose 3 on the surface of the water, and if it is not convenient for the eyes, to arrange it under a relatively shallow surface of the water.

Furthermore, since the recovered sludge is concentrated and packed in the hose 3, it can be easily carried out as it is, and sludge treatment can be performed easily.

Moreover, since the buoyancy of the raft-shaped float 2 is set to be equal to or greater than the weight of sludge that can be collected by the hose 3 (actually, equal to or greater than the weight including the weight of the pump 1), the hose 3 will not be submerged in water. The recovery efficiency and the aeration effect can be stably maintained. Furthermore, it is desirable that the size of the pores of the hose 3 be appropriately set according to the type of sludge to be recovered.
When excessively collecting fiber waste, wood waste, hair, etc., 100
If excessively recovering mesh, general sludge, weeds, soil, etc., 200 mesh, excessively recovering blue-green algae, red tide plankton, if it is about 300 mesh, the water absorption capacity of pump 3 will be reduced too much. The sludge can be collected efficiently.

(Experimental example) A sewage and submersible pump with a discharge rate of 180 / min was used as the pump 2, a hose 3 made of cloth of about 200 mesh was connected to the water outlet, and it was operated for about 4 hours and collected at the bottom of the fish pond. When an over-recovery experiment of various sludges was conducted, the sludge over-recovered in the hose 3 had a water content of 96% or less (sludge 4% or more). confirmed. Even if a settling tank is used,
According to the present invention, the volume of sludge concentrated and recovered in the hose 3 is significantly smaller than that in the conventional method, and the water can be easily disposed because the water content is concentrated to about 98%.

Although the sludge recovery device of the present invention is effective in recovering sludge from fishponds, golf course ponds, castle moats, etc., it can also recover sludge from oceans and lakes if it is enlarged. Needless to say.

[Advantages of the Invention] The present invention is configured as described above, and a pump for sucking water from a bottom such as a pond or a moat is attached to a float capable of moving the water surface, and is formed of a transient material having innumerable pores. A long sludge recovery hose with one end blocked is connected to the water discharge port of the pump, and the aus is arranged near the water surface, and the sludge excessive recovery means is configured by a disposable hose. As a result, the facility cost can be reduced, and there is no need to secure a place for sewage treatment on the ground, which has the effect of cost savings. Further, since the recovered sludge is concentrated and packed in the hose, there is an effect that the sludge can be easily carried out as it is and the sludge treatment can be easily performed. Furthermore, since the hose is placed near the surface of the water, the water leaking from the pores of the hose will be released into the air in the form of mist and returned to the pond, moat, etc., and the dissolved oxygen due to the aeration effect can be increased. It also has the additional effect of being particularly effective in fishponds.

Further, by arranging the hose on a raft-like float and forming the float so as to obtain a buoyancy force greater than the sludge weight that can be recovered by the hose, the recovery efficiency and the aeration effect can be stably maintained. There is.

Furthermore, if the hose is formed of a cloth having pores of 100 mesh to 300 mesh, the sludge can be efficiently collected without lowering the water absorption capacity of the pump.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, and FIG. 2 is a perspective view of the same. 1 is a pump, 2 is a float, and 3 is a hose.

Claims (3)

[Claims] 1. A long sludge recovery hose with a pump capable of sucking water from a bottom such as a pond or a moat attached to a float capable of moving on the water surface, which is formed of a transient material having numerous pores and has one end closed. Is connected to the water discharge port of the pump, and the hose is arranged near the water surface. 2. The float according to claim 1, wherein the hose is arranged on a raft-like float, and the float is formed so as to obtain buoyancy more than the weight of sludge recoverable by the hose. Sludge recovery device. 3. The sludge collecting device according to claim 1, wherein the hose is formed of a cloth having pores of 100 mesh to 300 mesh.