JP2001293493A - Vegetated float for improving water quality - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for improving water quality capable of removing even phosphorus/nitrogen components in water at the time of cleaning the water quality of lakes and marches. SOLUTION: In the device for improving the water quality, a vegetated float, a gas-liquid mixing device capable of generating water streams and a solar panel are combined.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification system in which a vegetation float that floats on a lake and grows plants thereon is combined with a gas-liquid mixing device and a solar module.

[0002]

2. Description of the Related Art As a prior art of a conventional water purification method for lakes and marshes, Japanese Patent Publication No. 64-4733 and Japanese Patent Application Laid-Open No. 4-330927.
And a gas-liquid mixing device utilizing cavitation as disclosed in Japanese Patent Application Laid-Open No. Hei 6-233922. The gas-liquid mixing device as described above automatically inhales air and discharges it as fine bubbles into water to increase the dissolved oxygen in the water, proliferate aerobic bacteria to decompose organic matter in the water, It was effective to raise the water flow and move the dead water to help purification. However, even if organic matter can be decomposed, compounds containing phosphorus and nitrogen, which are components thereof, remain in water and cannot be removed.

On the other hand, many attempts have been made to purify water with the help of plants. Examples of prior art are Japanese Utility Model Laid-Open No. 6-38498, Japanese Utility Model 3039017 and Japanese Utility Model 30.
No. 58489, etc. to absorb the contaminants in the water by removing the roots of the plants from the vegetation float to the water, or to create an environment where underwater animals, plankton, bacteria, etc. can live easily around the bottom of the bottom. Was trying to purify water. However, it was not possible to actively take in and purify contaminated water.

[0004] As an example of the prior art in which an aeration device and a vegetation floating island are combined, as shown in Japanese Patent Application Laid-Open No. 09-117787, a diffuser pipe as an aeration device is provided in the lower water of the vegetation floating island so that a rising aeration water stream hits the lower surface of the floating island. However, in this case, nutrients hit the roots of vegetation plants on floating islands by releasing air as air bubbles from the diffuser pipe through the air supply pipe with a pump as air bubbles into the water, causing a gentle flow of water due to the natural rise of the bubbles. It is to do.

[0005] However, in the above-mentioned invention, the range of purifying water is limited to the lower part of the vegetation floating island, and the uptake rate of dissolved oxygen is not so high if the air is simply blown into the water. was there.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a gas-liquid mixing device.
An object of the present invention is to provide a device for purifying the water quality of a wide range of waters by effectively utilizing the advantages of each vegetation float, increasing dissolved oxygen efficiently.

[0007]

SUMMARY OF THE INVENTION The present invention has been developed by one of the present inventors on a part of a vegetation float. The cavitation is intentionally generated during rotation of an impeller to create a negative pressure, and air is sucked in in a self-priming manner. And a gas-liquid mixing device that increases the dissolved oxygen uptake efficiency about 10 times that of a normal air-blowing aeration device.

[0008] The gas-liquid mixing device may be adapted to simultaneously generate a water flow, and the direction of the water flow may be automatically changed.

[0009]

The water flow with a large amount of dissolved oxygen generated from the impeller passes through the root of the plant hanging below the vegetation float and extends to the outside of the vegetation float. If the direction of the water flow is automatically changed, the water can be purified over a wide area around the floating island.

[0010] Aerobic bacteria grow in water with a large amount of dissolved oxygen, decompose organic substances in the water, and the decomposed compounds containing phosphorus and nitrogen are absorbed from the roots of the plants and accumulated in the plants. It is gradually purified.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a water quality improving apparatus according to the present invention will be described with reference to the drawings. A vegetation float 1 has vegetation and its roots hanging in water. 2 is a mooring line, which is connected to an anchor so that the device does not move.

Reference numeral 3 denotes a gas-liquid mixing device having a built-in motor, impeller, etc. for generating a water flow. Reference numeral 4 denotes a pipe for guiding air to the impeller portion, reference numeral 5 denotes an intake hole, and reference numeral 6 denotes a suspension of the gas-liquid mixing device. And a rotating device.

Reference numeral 7 denotes a solar cell panel, and reference numeral 8 denotes a power supply unit including a storage battery and a timer. It can be operated before dawn when dissolved oxygen is most needed, or it can be operated intermittently.

[0014]

According to the present invention, a gas-liquid mixing device with a water flow and a solar module are further set on a vegetation float. Aerobic bacteria are proliferated to decompose organic matter in the water, and the resulting compounds containing nitrogen and phosphorus are absorbed from the roots of plants, so that the water quality can be improved while using natural energy.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a water quality improvement device of the present invention.

[Explanation of Codes] Vegetation float 2. Mooring line 3. Gas-liquid mixing device 4. 4. Intake pipe Inlet 6. 6. Support rotating device Solar cell 8. Power adjustment box

[Reference number] TES-00-007

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H01L 31/04 H01L 31/04 Q (72) Inventor Kazunori Sato 5-28- Kamikada, Nakano-ku, Tokyo 4 Murata House F-term (reference) 2B314 MA23 MA62 NC37 PA09 4D029 AA09 AB02 AB03 BB11 4D040 CC02 CC05 4G035 AB18 5F051 BA05 BA11 JA17

Claims (3)

[Claims] 1. A water quality improvement device comprising a combination of a vegetation float and a gas-liquid mixing device having an impeller for causing a water flow with a large amount of dissolved oxygen below and around the vegetation float. 2. The water quality improvement device according to claim 1, wherein the direction of the water flow is changed by changing the direction of the impeller so that the water can be sent over a wide area around the floating island. 3. The water quality improvement device according to claim 1, further comprising a solar module, wherein the gas-liquid mixing device is driven by electric energy obtained from the solar module.