JPH05285494A - Method for filtering bathing water - Google Patents

Abstract

PURPOSE:To enhance filtering accuracy by performing filtration in a well- balanced state by filtering circulated bathing water through a physical filter device having beads received therein and further filtering the same through a biological filter tank having bacteria received therein. CONSTITUTION:Bathing water (a) is filtered through a physical filter tank 2 having beads 1 with a particle size of about 1mm received therein as a filter medium and further filtered through a biological filter tank 3 having bacteria received therein to be circulated. Only waste refuse such as large fur or hair is removed by the physical filtration due to the physical filter tank 2. The remaining fur or oil component not removed by the physical filter tank 2 flows in the biological filter tank 3 and fur is allowed to flow in the biological filter tank 3 in a certain degree to make the propagation of bacteria active to enhance the removing ratio of an oil component and a soluble substance in the biological filter tank 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for filtering bath water for filtering and recycling the circulating bath water.

[0002]

2. Description of the Related Art In recent years, bath water has been circulated and filtered for reuse. By the way, the scale in the bath water has a particle size distribution of around 0.7 μm and around 35 μm as shown in FIG. 3, and the scale in the bath water needs to be subjected to physical filtration containing beads as a filter medium. It is designed to be performed by a physical filtration tank for performing and a biological filtration tank for carrying out biological filtration in which microorganisms are stored. And, in the conventional way of thinking, the SS (floating solid matter) for bath water is physically filtered.
The idea is to remove all that can be removed, and the beads used as a filtering material contained in the physical filtration tank had a particle size of 200 μm in order to improve the filtration accuracy.

[0003]

However, in the conventional example as described above, as shown in FIG. 4, physical filtration is performed by a physical filtration tank using beads 1 having a particle size of 200 μm as a filtering material. If most of the dirt in the bath water is removed, only soluble substances and oils will flow into the biological filter tank, which means that the biological filter tank in which the microorganisms are stored should be the nutrients for the microorganisms. Less inflow,
The reproduction of microorganisms in the biological filtration tank is reduced, and the number of microorganisms is reduced, which reduces the purification ability of the biological filtration tank due to the proliferation of microorganisms, and there is a problem that odor and turbidity remain in the bath water. there were.

The present invention is intended to solve the above problems, and a method for filtering bath water capable of improving the filtration accuracy by performing the filtration accuracy in a physical filtration tank and in the biological filtration tank in a well-balanced manner. Is to provide.

[0005]

According to the present invention, in order to achieve the above object, the circulating bath water a is used as a filter medium.
After filtering in a physical filtration tank 2 in which beads 1 having a particle diameter of about mm are stored, it is filtered in a biological filtration tank 3 in which microorganisms are stored.

[0006]

Thus, after being filtered in the physical filtration tank 2 in which the beads 1 having a particle diameter of about 1 mm are accommodated as a filtering material, it is circulated so as to be filtered in the biological filtration tank 3 in which microorganisms are accommodated. The bath water a is filtered. Since the particle diameter of the beads 1 as the filtering material in the physical filtration tank 2 is about 1 mm, only large dust, hair, dust and the like are removed by the physical filtration by the physical filtration tank 2. This means that the remaining dirt, oil, and soluble substances that could not be completely removed by the physical filtration tank 2 will flow into the biological filtration tank 3, so that a certain amount of dirt will flow into the biological filtration tank 3. Thus, the reproduction of microorganisms in the biological filtration tank 3 can be activated, and the removal rate of oil and soluble substances in the biological filtration tank 3 can be improved.

[0007]

The present invention will be described below in detail with reference to the illustrated embodiments. As shown in FIG. 1, a filtering device A for circulating and filtering bath water is provided near the bath 4.
Circulating pipeline 5 branched into a plurality, a filtration tank provided in the middle of the circulating pipeline 5, and a pump 6 for circulating bath water.
The subject is composed of and.

The filtration tank is a physical filtration tank 2 in which dust and the like in the bath water is captured and removed (physical filtration) by a filter material, and dirt is decomposed and removed by microorganisms (biological filtration). It is composed of a biological filtration tank 3 which is different from the above.
The physical filtration tank 2 is 1 mm as a filtering material in the storage case 2a.
It is formed by accommodating a large number of beads 1 having a particle size of the order of magnitude,
The beads 1 are in a state of being deposited on a partition plate 7 provided at the bottom of the storage case 1a. The circulation conduit 5 is connected to the upper and lower parts of the storage case 2a, and normally, the bath water flowing in from the upper circulation conduit 5 is filtered by the beads 1 as the filtering material, and then the lower circulation conduit is connected. 5
The water is drained to the outside of the storage case 2a.

The biological filtration tank 3 is formed so that microorganisms are present as a filtering material in the storage case 3a.
In this biological filtration tank 3 as well, the circulation conduit 5 is the storage case 3
It is connected to the upper part and the lower part of a, and normally the bath water flowing in from the upper circulation pipe 5 is filtered by microorganisms as a filter medium and then drained from the lower circulation pipe 5 to the outside of the storage case 3a. It is supposed to be done.

The bath water sucked into the circulation line 5 by the drive of the pump 6 is first subjected to a filtering action in the physical filtration tank 2 and then filtered in the biological filtration tank 3 and then again into the bath. 4, and the bath water in the bathtub 4 is circulated and filtered for reuse. And
The particle size of the beads 1 as the filtering material in the physical filtration tank 2 is 1 m.
Since the size is set to about m, only relatively large dust such as large dust, hair, and dust is removed by the physical filtration by the physical filtration tank 2, and the remaining residue that cannot be completely removed by the physical filtration tank 2. Dust, oil, and soluble substances will flow into the biological filter tank 3, and by allowing a certain amount of dust to flow into the biological filter tank 3, the reproduction of microorganisms in the biological filter tank 3 will be activated. The removal rate of oil and soluble substances (especially oil and ammonia nitrogen) in the biological filtration tank 3 becomes high, and the filtration performance by performing the filtration by the physical filtration tank 2 and the filtration by the biological filtration tank 3 in a well-balanced manner. It is supposed to improve. That is, as shown in FIG. 2, a large amount of dust, hair, dust and other dust and a part of fine dust are physically filtered by the physical filtration tank 2 to dissolve fine dust, oil and ammonia as nutrients for microorganisms. Most of the above is biologically filtered by the biological filter tank 3. Further, in the physical filtration tank 2, the flow path of the circulation pipe 5 is switched to reverse the backwashing of the bath water to remove the dust trapped by the beads 1 as the filtering material. However, if the particle size of the beads 1 is about 1 mm, it is possible to prevent a large amount of the beads 1 from flowing out of the storage case 2a during backwashing.

[0011]

As described above, in the method for filtering bath water of the present invention, the circulating bath water is used as a filtering material in a physical filtration tank containing beads having a particle diameter of about 1 mm, and then the microorganisms are filtered. Since the beads are used as a filtering material in the physical filtration tank with a particle size of about 1 mm so that it can be filtered in the stored biological filtration tank, physical filtration by the physical filtration tank causes large dust, hair, and dust. It means that only the dust such as etc. will be removed, and the remaining dirt, oil and soluble substances that could not be completely removed by the physical filtration tank will flow into the biological filtration tank, and a certain amount of dirt will be removed from the biological filtration tank. It is possible to activate the growth of microorganisms in the biological filtration tank by injecting it into the biological filtration tank, improve the removal rate of oil content and soluble substances in the biological filtration tank, and improve the physical filtration tank and biological filtration tank. Balance the filtration accuracy of Be performed Ku is capable of improving the filtration accuracy.

[Brief description of drawings]

FIG. 1 is a system diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating an operation of the above.

FIG. 3 is a bar graph showing measurement results of particle size distribution of scale.

FIG. 4 is an explanatory diagram illustrating an operation of a conventional example.

[Explanation of symbols]

 1 beads 2 physical filtration tank 3 biological filtration tank a bath water

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B01D 35/027 C02F 3/06 F24H 9/00 W (72) Inventor Teruo Masuda 1048 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. The bath water circulated is 1 mm as a filter medium.
A method for filtering bath water, which comprises filtering in a physical filtration tank containing beads of a certain particle size and then filtering in a biological filtration tank containing microorganisms.