JPH03101886A - Method and device for cleaning pond water or the like - Google Patents

Abstract

PURPOSE:To attain the direct use of the driving power of a lifting pump for regenerating filter media and to eliminate the need for a special device by filtering sewage with a filter machine in which the floating filter media are used and irradiating the filtrate with UV rays. CONSTITUTION:The sewage of a pond 2 lifted by a submersible pump 1 flows through a feed pipe 11 and lifts the floating filter media 4 of the filter machine 3 from the bottom of the filter machine 3. The sewage is filtered by a filter layer formed of the filter media 4. The filtrate is sent via a water collecting nozzle to the precision filter machine 5 where the finer particles are further captured; thereafter, the filtrate is sent to a sterilizer 6 by UV rays where the filtrate is irradiated with the UV rays and is thereby sterilized. The filtrate is returned through a reflux pipe 10 to the pond 2. Namely, the filtrate returned into the pond 2 is irradiated with the UV rays and is thereby sterilized. The general bacteria and other extraneous materials, such as water-blooms and red tides, in the pond water are removed and the sewage is cleaned by continuously executing the above-mentioned cyclic filtration.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method and apparatus for purifying pond water, etc.
It is an object of the present invention to provide a purification method and a purification device that are highly effective when used to purify large moats, lakes, and marshes.

[Conventional technology]

Conventionally, there are the following methods for purifying moats, lakes, etc. For example, in order to deal with blue-green algae and red tide that occur in lakes and marshes, it is known that water from the layer where the blue-green algae and red tide occur is pumped up and filtered. Additionally, in small household ponds, chemicals are added to kill the microorganisms that cause these ponds.

[Problem that the invention seeks to solve]

However, blue-green algae and red tide that occur in lakes, etc.
There are many cases where large-sized processing equipment is required, which requires facility costs and high running costs. In addition, it costs a huge amount of money to use chemicals, and if they are used to the extent that they kill blue-green algae and red tide, contamination by the chemicals themselves is a problem.

[Means for solving problems]

This invention reduces both facility costs and operating costs by performing continuous treatment using an easy-to-handle P filter device, and also kills harmful microorganisms using ultraviolet rays that do not cause secondary contamination. The feature is that it allows the user to

That is, the following measures were taken.

(11) The sewage pumped up from a pond, etc. using a submersible pump was filtered by a filter using a floating filter material, and after the filtered water was irradiated with ultraviolet rays, it was returned to the pond, etc.

(2) Then, the Pa water to which the ultraviolet rays were irradiated was diffused and rectified in a screen shape to increase the irradiation efficiency of the ultraviolet rays.

(3) 1. Also, as a device for treating sewage as mentioned above,
The above filtration method consists of a pump installed underwater, a filtration machine using floating P material to filter the wastewater pumped up by the pump, and a device that irradiates the filtered water of this filtration machine with ultraviolet rays. A wastewater supply port is provided at the bottom of the filtration chamber, and a supply port for a branch pipe branched from the wastewater supply pipe is provided on the peripheral wall thereof, and the supply port provided in the peripheral wall is arranged along the circumferential direction of the peripheral wall. At the same time, these supply ports can be freely switched via switching valves 13 and 14.

[Effect]

By doing the above, the wastewater pumped up by a submersible pump is evaluated by a filter using a floating filter, and then the filtered water is irradiated with ultraviolet rays to kill microorganisms and then returned to its original state. It flows back into the pond. In this P filtration operation, the filter of this invention uses floating P material as the P material, so it is easy to handle during installation, etc., and especially when the i door material becomes clogged, Regeneration of conventional sand P
・Easy compared to B machine etc. In other words, since the furnace is made of floating P material, the IQ force for injection of water is sufficient.
It can be stirred and separated from the door material and the contaminants that clog it. When stirring this material, a huge amount of floating filter material can be fed into the centrifugal direction from the peripheral wall to create a swirling flow, and special equipment is not required for stirring. do not.

1. The P solution (filtered water) is irradiated with ultraviolet rays to kill microorganisms such as blue-green algae and red tide, but this is effective because there are few particles in the P-filtered water that can interfere with the ultraviolet rays. . Furthermore, when the ultraviolet rays are irradiated, if the liquid is made to flow in a thin film, the filtered water can be irradiated uniformly, which is even more effective. The present invention will be explained below based on the drawings.

〔Example〕

In Fig. 1, reference numeral 1 indicates a submersible pump installed in a pond 2, 3 indicates a submersible pump using floating i-door material 4, and 5 indicates a submersible pump installed at the subsequent stage. It is a filter and uses a cartridge-type filter material made of ceramic or the like. 6 is a sterilizer using ultraviolet light, and the inside thereof is arranged as shown in FIG.

That is, a cylindrical liquid droplet 7 is provided in the center, and a large number of ultraviolet lamps 8 are suspended around the droplet 7. The symbol F indicates the flowing liquid. Reference numeral 9 indicates an outlet for the flowing liquid, and reference numeral 10 indicates a recirculation pipe for the liquid to flow into the pond.

Further, in FIG. 1, reference numeral 11 is a feed pipe to the pond water filter, 12 is a branch pipe thereof, and its opening to the filter 3 is as follows:
As shown in FIG. 1B, it is placed along the peripheral wall. 13
14 is the switching valve provided in the feed pipe 11, 15 is the washing water drain pipe, and l6 is the drain pipe 1.
5. Are these switching valves centralized system? It is made so that xj can be done. 4 and 5 show other embodiments of the ultraviolet irradiation device, in which reference numeral 17 is a flow tube for furnace liquid, reference numeral 18 is a trough for receiving liquid, 19 is a trough for diffusion, 20 is a downstream trough, 21
indicates a notch in the weir plate of the trough.

In the purification device constructed in this manner, the sewage from the pond 2 pumped up by the submersible pump 1 passes through the inlet pipe 11, pushes up the floating filter material 4 of the filter 3 from the bottom of the filter 3, and is purified by the furnace material. It is filtered through a filter layer that has a fixed shape. Then, the filtered water is sent to a precision filter 5 through a water collection nozzle, where finer particles are captured, and then sent to an ultraviolet sterilizer 6 where it is irradiated with ultraviolet light and sterilized. The water flows back into the pond 2 through the reflux pipe 10. In other words, the filtered water that circulates in the pond is irradiated with ultraviolet rays and acupunctured, and by continuously performing this circulation,
Bacteria and impurities in pond water such as blue-green algae and red tide are removed,
It can purify sewage. In addition, when performing the above-mentioned purification treatment, when irradiating ultraviolet rays, the irradiation efficiency can be improved by passing the furnace water through a precision filter to remove fine particles and spreading it in a screen shape as shown in the figure. higher and more effective.

〔Effect of the invention〕

In this way, when purifying pond water, etc., this invention uses a filter that uses a floating filter as a filter, and the power of the pump can be used to regenerate the filter, making it possible to use special It does not require any equipment, and compared to conventional filtering equipment using sand or special filter media, it is easier to operate and can significantly reduce both initial cost and running cost.

[Brief explanation of drawings]

FIG. 1A is a flowchart of a purifying device according to the present invention, FIG. 1B is a cross-sectional plan view of the filter, and FIG.
A vertical side view of the ultraviolet irradiation device, FIG. 3 is a plan view thereof, and FIG. 4 is a plan view of another embodiment of the ultraviolet irradiation device.
FIG. 5 is a longitudinal sectional side view thereof. 1 Underwater horn 3 Filtration machine 4 Floated material 6 Sterilizer 11 Supply pipe 12 Branch pipe 13/14 switching valve 2 products 3 first 2, A-6 S diagram

Claims (3)

[Claims] (1) Pond water is characterized by filtering dirty water from a pond, etc., pumped up by a submersible pump 1 through a filter 3 using a floating filter material, irradiating the filtered water with ultraviolet rays, and then circulating it back to the pond, etc. Purification methods such as. (2) The method for purifying pond water, etc. according to claim (1), wherein the filtered water irradiated with ultraviolet rays is diffused and rectified in a screen shape. (3) It consists of a pump 1 installed underwater, a filter 3 using a floating filter material 4 for filtering the wastewater pumped up by the pump 1, and a device 6 that irradiates the filtered water of the filter 3 with ultraviolet rays. The filtration machine 3 is provided with a sewage supply port at the bottom of its filtration chamber, and a supply port for a branch pipe 12 branched from the sewage supply pipe 11 on its peripheral wall. A device for purifying pond water, etc., which is opened along the circumferential direction of the peripheral wall, and these supply ports are freely switchable via switching valves 13 and 14.