JPS595670Y2 - Water surface floating microorganism removal device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a floating microorganism removal device that collects and removes algae and phytoplankton floating on or near the surface of water such as lake water.

In recent years, lake water has been experiencing a phenomenon of eutrophication, which is thought to be caused by an increase in domestic wastewater, and as this progresses, the phenomenon of abnormal proliferation of phytoplankton is occurring in various places.

This abnormal growth is causing damage such as spoiling the beauty of the lake surface, emitting a peculiar odor, causing damage to fisheries, and decreasing the value of water as a resource.

Various measures and experiments have been carried out to prevent the occurrence of microorganisms and remove the causes, but none have been found to be effective.

Recently, as a device for collecting and removing these floating microorganisms, the raw water taken in is guided into a separation tank installed inside the ship, and suspended matter is floated and separated while flowing gently across the tank, collected by a suction device, and sent to a dehydrator. ing.

However, the residence time of this flotation separation is long, so the separation tank has to be quite large.Furthermore, simple flotation separation may disturb the surface of the separation tank or leave the separation tank before floating (short path). Therefore, materials with a specific gravity close to 1, such as algae, have a poor separation effect and are inappropriate.

In addition, the dehydrator uses an expensive centrifuge or the like that consumes a large amount of power, and the equipment is large and sophisticated in spite of its removal capacity, which poses a problem in terms of cost.

The present invention aims to solve these conventional problems, effectively separate airborne microorganisms, and provide a small and inexpensive device.

The present invention provides a floating material introduction section at the front of the hull, and connects the introduction section into a micro strainer, and the micro strainer is composed of a rotatably installed cylindrical screen drum. A hopper with a suspended matter discharge pipe was installed in an open manner, and a nozzle connected to a water supply pipe was installed outside the drum, and the outside of the micro strainer was communicated with a propulsion device installed at the rear of the hull via a water supply channel. This is a water surface floating microorganism removal device.

An embodiment of the present invention will be described with reference to the drawings.
A movable weir 2 that is lower than the water surface is movably attached to a partition plate 4 connected to the bottom 3 of the ship at the front of the hull in the area surrounded by the water. A micro strainer 6 is disposed at the rear end of the storage chamber 5, and the storage chamber 5 and the inside of the micro strainer 6 communicate with each other.

The micro strainer 6 has a horizontal rotary drum 7 whose circumferential surface is formed by a cylindrical screen, and is provided with a suspended microorganism discharge pipe 9 connected to a hopper 8 having an opening at the top, and a drum facing the hopper 8. A nozzle 11 connected to a water supply pipe 10 is arranged above 7.

This water supply pipe 10 is connected to a water supply pump (not shown) and is configured to suck clear water inside the hull or water from outside the hull.

Furthermore, a water conduit 12 is provided below the outside of the micro strainer 6 and communicates with a sedimentation device 13 such as a side thruster installed at the rear of the hull, and the separated liquid separated from floating microorganisms by the micro strainer is transferred to the water conduit 12. By discharging the raw water from the sedimentation device 13 through the above, the ship moves forward and the raw water is sucked in.

In the figure, 14 is a dehydration device 1 connected to the suspended microorganism discharge pipe 9.
5 is a drain port.

In the embodiment, an example of a catamaran ship has been described, but other ships capable of navigating on water or under water by their own power or other power may also be used.

When the movable weir 2 is lowered and the sedimentation device 13 is driven, the raw water is guided through the storage chamber 5 into the micro strainer 6 and subjected to straining treatment by the cylindrical screen of the rotating drum 7.

Airborne microorganisms in raw water are captured inside the cylindrical screen,
The floating microorganisms are washed and peeled off by pressure water jetted from a nozzle 11 through a water supply pipe 10, received by a hopper 8, and sent to a dewatering device 14 from a discharge pipe 9 to be dehydrated.

On the other hand, the clarified separated liquid passes through a cylindrical screen, passes through a water supply channel 12 below the outside of the micro-strainer 6, and is discharged out of the vessel from a sedimentation device 13, which moves the hull forward and near the water surface. The floating microorganisms are sucked into the storage chamber 5 together with water, and the floating microorganisms can be collected and removed efficiently.

Although it is preferable to use the separated liquid separated by a micro strainer as the pressure water used to wash and detach floating microorganisms captured on the cylindrical screen, relatively clear water such as deep water outside the ship can also be used.

As described above, the present invention separates raw water containing floating microorganisms using a micro strainer, and discharges the separated liquid out of the system from a sedimentation device installed at the rear of the hull.
The simple structure can increase the overspeed for separating airborne microorganisms, making the hull smaller, easy to handle, and allowing the hull to be deposited and sucked in raw water, resulting in low power consumption and processing capacity. In particular, the micro strainer consists of a rotatable cylindrical water screen drum, in which a hopper with a suspended solids discharge pipe is opened and a nozzle connected to the water supply pipe is installed. By placing it outside the drum, the screen can be easily purified and the floating matter can be discharged with appropriate efficiency.The hopper inside the screen allows stable removal of overflowing floating matter, and there is no short path, making it extremely economical. This makes it possible to reduce construction costs and significantly reduce processing costs.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view. 1...Body, 2...Movable weir, 3...
...Bottom, 6...Micro strainer, 7.
... Rotating drum, 12 ... Water supply channel, 13
・・・・・・Deposition device.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A floating matter introduction part is provided in the front part of the hull, and the introduction part is connected to a micro strainer, and the micro strainer is composed of a rotatable cylindrical screen drum, A hopper with a suspended matter discharge pipe connected thereto is installed in the rotary drum, and a nozzle connected to a water supply pipe is installed outside the drum, and a water supply channel is connected to the propulsion device installed at the rear of the hull with the outside of the micro strainer. A device for removing microorganisms floating on the water surface. 2. The water surface floating microorganism removal device according to claim 1, wherein the micro strainer has a suspended matter discharge pipe connected to a dehydrator. 3. The water surface floating microorganism removal device according to claim 1 or 2, wherein the introduction part is a movable dam. 4. Any one of claims 1 to 3 of the utility model registration claim, wherein the introduction part is provided between the parallel bodies of a catamaran and is provided at least at a level lower than the water surface. Water surface floating microorganism removal device as described in . 5. The water surface floating microorganism removal device according to any one of claims 1 to 4, wherein the introduction portion is provided in a partition plate that partitions a storage chamber for floating microorganisms. 6. The water surface floating microorganism according to any one of claims 1 to 5, wherein the propulsion device is a side thruster and is provided to communicate the water supply channel with the outside of the ship. removal device.