JPH0798186B2 - Method and device for purifying pond water - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for purifying pond water and the like, and an apparatus therefor,
The purpose of the present invention is to provide a purification method and a purification device that are effective for cleaning large moats and lakes.

[Conventional technology]

Conventionally, there are the following methods for cleaning moats and lakes. For example, it is known that, for water-blooms and red tides that have occurred in lakes and marshes, the water in the generation layer of water-blooms and red lakes is pumped up and used. Also, in small ponds at home, chemicals are added to kill the microorganisms that are the source of these chemicals.

[Problems to be solved by the invention] However, a large amount of water-bloom and red tide generated in lakes and marshes require large-scale processing equipment, which requires facility costs and running costs. . In addition, injecting chemicals requires a huge amount of cost, and if they are injected to the extent that they kill blue-green algae and red tides, contamination by the chemicals themselves poses a problem.

[Means for solving problems]

This invention reduces both facility costs and operating costs by performing continuous processing operations using an easy-to-handle excess device, and kills harmful microorganisms by using ultraviolet rays that do not cause secondary pollution. It is characterized by doing so. That is, the following measures are taken.

(1) Sewage from a pond or the like pumped up by a submersible pump was passed through a machine using levitation materials, and after the superfluous water was irradiated with ultraviolet rays, it was circulated to the original pond or the like.

(2) Then, the ultraviolet ray-irradiated perhydrogen is diffused and rectified into a screen shape to enhance the ultraviolet ray irradiation efficiency.

(3) Further, as a device for treating sewage as described above,
It consists of a pump installed in water and a device that irradiates ultraviolet light to the excess water of this excess machine, which is an excess machine using a levitation material for passing the dirty water pumped by this pump. A sewage supply port is provided at the bottom of the excess chamber, and a supply port of a branch pipe branched from the sewage supply pipe is provided at the peripheral wall part, and the supply port provided at the peripheral wall part is arranged along the circumferential direction of the peripheral wall. Along with opening, switching valves for these supply ports
Switchable via 13,14.

[Action]

By doing the above, the sewage pumped up by the submersible pump is passed by a floating machine, and then the sewage is irradiated with ultraviolet rays to kill microorganisms and then to the original pond. Return to. In this over-operation, since the floating material is used as the material in the over-machine in the present invention, it is easy to handle for installation and the like, and particularly when the material is clogged, it can be regenerated by the conventional method. It is easier than sand filters. That is, since the material is a floating material, it can be sufficiently agitated at about the press-fitting pressure of sewage,
The timber and its clogging impurities can be separated. Since this material is a lightweight floating material at the time of stirring, a swirling flow can be generated by feeding the material in the centrifugal direction from the peripheral wall portion, and no special device is required for stirring. Further, the liquid (perhydrogenated water) can be irradiated with ultraviolet rays to kill microorganisms such as water-bloom and red tide, but at this time, it is effective because there are few fine particles that obstruct ultraviolet rays in the perhydrogenated water. Further, if the liquid is made to flow in a thin film when being irradiated with ultraviolet rays, it is possible to uniformly irradiate the perhydrogen, which is even more effective. The present invention will be described below with reference to the drawings.

〔Example〕

In FIG. 1, reference numeral 1 is a submersible pump installed in a pond 2, 3 is an excess machine using a levitation material 4, and 5 is a precision machinery installed in a subsequent stage, and is a cartridge type cartridge made of ceramic or the like. The material is used. Reference numeral 6 is a sterilizer using ultraviolet rays, and the inside thereof is constructed as shown in FIG.

That is, a cylindrical liquid flow-down body 7 is provided in the central portion, and a large number of ultraviolet lamps 8 are suspended around the flow-down body 7. The symbol F indicates the liquid flowing down. Reference numeral 9 indicates an outlet of the liquid that has flowed down, and 10 is a reflux pipe to the liquid pond. Further, in FIG. 1, reference numeral 11 is an inlet pipe for the pond water overrun, and 12 is a branch pipe for the overrun.
The opening to the side wall extends along the peripheral wall as shown in FIG. 1-B. 13 is a switching valve installed in the branch pipe, 14 is an inlet pipe
11 is a switching valve, 15 is a drainage pipe for washing water, 16 is a switching valve provided for the drainage pipe 15, and these switching valves can be centrally controlled. 4 and 5 show another embodiment of the ultraviolet irradiation device,
In the figure, reference numeral 17 is a liquid flow-down cylinder, reference numeral 18 is a liquid receiving trough, 19 is a diffusion trough, 20 is a flow-down trough, and 21 is a notch provided in a trough dam plate. In the purifying apparatus configured as described above, the sewage in the pond 2 pumped up by the submersible pump 1 is formed by the levitation member 4 of the excess machine 3 from the bottom of the excess machine 3 via the inlet pipe 11. Being overpassed. Then, the excess water is sent to a precision filter 5 through a water collecting nozzle, and after finer particles are captured in a specific location, it is sent to an ultraviolet ray sterilizer 6 and irradiated with ultraviolet rays for sterilization. , And then return to the pond 2 via the return pipe 10. In other words, the perfused water that circulates in the pond is sterilized by being irradiated with ultraviolet rays, and by continuously performing this circulation, bacteria in the pond water such as water-bloom and red tide and its contaminants are removed, and It can be purified. Incidentally, in the above-mentioned purification treatment, in irradiating with ultraviolet rays, the excess water is passed through a precision filter to remove fine particle contaminants, and the irradiation effect is high when diffused in a screen shape as shown in the figure, More effective.

〔The invention's effect〕

Thus, in purifying pond water and the like, the present invention uses an excess machine that uses a floating material as an excess machine, so that the power of the pumping pump can be used as it is to regenerate the material, and a special device can be used. It is not necessary, and its operation is easier and the initial cost and running cost can be greatly reduced as compared with a conventional over device using sand or a special material.

[Brief description of drawings]

FIG. 1-A is a flow sheet of the purifying apparatus according to the present invention, FIG. 1-B is a cross-sectional plan view of the machine, FIG. 2 is a vertical side view of the ultraviolet irradiation apparatus, and FIG. FIG. 4 is a plan view of another embodiment of the ultraviolet irradiation device, and FIG. 5 is a vertical sectional side view thereof. 1 ... Submersible pump, 3 ... Excessive machine, 4 ... Floating material, 6
…… Sterilizer, 11 …… Supply pipe, 12 …… Branch pipe, 13,14 ……
Switching valve

Claims (3)

[Claims] 1. A feature of passing sewage from a pond or the like, which is pumped up by a submersible pump 1, by means of a passing machine 3 using a levitation material, irradiating the sewage with ultraviolet rays, and then returning it to the original pond or the like How to purify pond water. 2. The method for purifying pond water or the like according to claim 1, wherein the superfluid water irradiated with ultraviolet rays is diffused and rectified into a screen shape. 3. A pump 1 installed in water and this pump 1
Is composed of an excess machine 3 using a levitation material 4 for passing the waste water pumped up by and a device 6 for irradiating the excess water of the excess machine 3 with ultraviolet rays, and the excess machine 3 has waste water at the bottom of the excess chamber. And a supply port of a branch pipe 12 branched from the dirty water supply pipe 11 on the peripheral wall portion thereof, and the supply port provided on the peripheral wall portion is opened along the circumferential direction of the peripheral wall. A purifying device for pond water or the like in which these supply ports can be freely switched through the switching valves 13 and 14.