JPH07299496A - Bathtub water purifying device - Google Patents

Abstract

PURPOSE:To enhance an initial water purifying speed and to decompose malodorous substance, in a bathtub water purifier for household or business. CONSTITUTION:This device is provided with a bathtub 1, a pump 6 and flow paths 2, 3 for forcedly circulating the water in the bathtub 1, a water purifying module 8 and a UV ray irradiation device 9 in the flow path, and it has a structure in which porous mineral substance 10 and a pyridinium type resin coated carrier 11 with bacteria immobilized having nitrification activity are put into the water purifying module 8. Thus, high water purification and malodorous substance decomposition properties are obtained from the initial starting time of the water purification.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a domestic or commercial bath cleaning apparatus having the functions of purifying bath water, killing pathogenic bacteria in the water, and removing and decomposing organic substances.

[0002]

2. Description of the Related Art In a conventional bath water purifying apparatus, a wound filter for physical filtration, a pump for circulating bath water, a sterilization module, and a purification module for culturing microorganisms are arranged in a forced circulation channel. It is configured.

The purifying module is filled only with a porous mineral that elutes minerals, and the bath water is purified by the spontaneous generation of microorganisms in this porous mineral.

[0004]

However, in the above-mentioned conventional structure, the purification module has a problem that bacteria are propagated on the surface of the mineral and it takes 10 days or more to obtain sufficient purification ability. There was also a problem that a bad odor was produced after long-term use.

The present invention has been made to solve the above-mentioned problems, and has as its object the improvement of initial acceleration and the decomposition of malodorous substances.

[0006]

In order to achieve the above object, the present invention comprises a filtration device, a purification module for culturing microorganisms, and a sterilization device arranged in a flow path for forced circulation of water, and the purification module is perforated. The pyridinium-type resin film carrier on which the mineral substances, bacteria having nitrification activity and odor substance decomposition activity are immobilized is filled.

Further, the purification module is filled with a pyridinium type resin coating carrier on which a porous mineral substance and bacteria having an odor substance decomposing activity are immobilized.

Further, the purification module is filled with a pyridinium type resin coated carrier on which porous mineral substances and bacteria having nitrifying activity are immobilized and a pyridinium type resin coated carrier on which odorous substances are immobilized.

[0009]

With the above-described structure, the present invention can obtain high purifying property and decomposability of malodorous substances from the initial stage of cleaning.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

The water in the bathtub 1 passes through a filter device, which is provided at the center of the side surface of the bathtub and removes large dust particles, and a spool filter 5, which removes small dust particles, and reaches the pump 6. The pump 6 is forcedly circulated by the operation. The discharge path of this pump 6 is
It branches into a first flow path 2 and a second flow path 3, and the first flow path 2 passes through an ultraviolet irradiation device 9 which constitutes a sterilizer and enters the bath 1. The second flow path 3 merges with the first flow path 2 after passing through the ejector 7 and the purification module 8 for sending air to the purification module 8 in the subsequent stage. The purification module 8 is filled with a porous mineral substance 10 and a pyridinium type resin coating carrier 11. There are various bacteria that are immobilized on the pyridinium-type resin coating carrier 11 that is filled in the purification module 8, but here, as a bacterium having nitrifying activity, Rhodopseudomonas sphae strain (Rhodopseudomonas sphae
Rhodesopseudomonas strains (Rhodopseudomon) as r bacteria having odorous substance-decomposing activity.
as palstris) was used.

(Example 1) A carrier having a hydrophilic surface is desirable as a carrier for coating a pyridinium resin.
There is a mineral substance, but here, the mineral substance was used, and a coating of pyridinium resin was performed thereon.

The loading of bacteria on the pyridinium resin coated carrier used in the purification module was carried out as follows. A carrier coated with a pyridinium-type resin was added to a culture solution of Rhodopseudomonas sphaeroides strain grown to the late logarithmic phase at a volume ratio of 1: 1, and the cells were cultivated for a period of time while stirring with a rotor to carry cells I went. Then, it was taken out from the culture solution, stored in a purification module, and operated.
In addition, the same treatment was carried out for the Rhodopseudomonas parus tris strain.

(Example 2) A carrier carrying Rhodopseudomonas sphaeroides strain was stored in a purification module together with a porous mineral substance in a volume ratio of 1: 3 by the method of Example 1 and the purification operation was started. . Add dirt to the bathtub 1
Bathtub water (water temperature of about 40 degrees) with a certain area of the human body (1 m ² )
Was soaked for 10 minutes. This operation was performed every 48 hours.

When the Rhodopseudomonas sphaeroides strain was carried on the pyridinium resin coated carrier, the measurement results were shown for the most excellent items. FIG. 2 shows the time-dependent change of ammonia nitrogen in the bath water. It can be seen that ammonia has decreased immediately after the start of operation.

(Example 3) FIG. 3 shows changes in the odor of bath water twice as much as when a Pyridinium resin coated carrier was loaded with Rhodopseudomonas pultris strain. The sensory test method (six-step method) was used to evaluate the odor. Since there was almost no odor of bath water at the beginning of operation, 1 ppm of organic acid (propionic acid) was added. It can be seen that the odor is reduced in a relatively short time.

(Example 4) A pyridinium resin coated carrier carrying Rhodopseudomonas pulstris strain and Rhodopseudomonas sphaeroides strain were mixed at a ratio of 1: 1 to form a module together with a porous mineral substance. Purification activity in the case of filling in is shown in FIGS. 4 and 5.

The water quality was measured for three items: COD (potassium permanganate method), ammonia nitrogen, and odor (sensory test).

Regarding COD (FIG. 4), it can be seen that although it increases at one end, it gradually decreases with time. As with Example 2, the amount of ammonia nitrogen started to decrease from the beginning and was not detected after 15 days (FIG. 5). Since no odor was felt after 20 days, it is considered that the odorous substances are being decomposed.

[0020]

As described above, the bathtub water purifying apparatus of the present invention is coated with a pyridinium-type resin to prevent problems such as rising at the start of operation and odor due to long-term use, which are problems in the bathtub water purifying apparatus. By supporting a bacterium having nitrification activity and odor substance decomposition activity on the carrier, it is possible to obtain high cleanability and malodorous substance decomposability from the initial stage of purification.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a bath water purifying apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing the time course of ammonia nitrogen when the purification module is filled with a carrier on which Rhodopseudomonas sphaeroides strain is immobilized.

FIG. 3 is a view showing a time-dependent change in odor when a purification module is filled with a carrier on which Rhodopseudomonas pulse Tris strain is immobilized.

FIG. 4 is a diagram showing a change with time in COD (chemical oxygen consumption) when a purification module is filled with a carrier on which Rhodopseudomonas sphaeroides and Pulstris strains are immobilized.

FIG. 5 is a diagram showing the time course of ammonia nitrogen when the purification module is filled with a carrier on which Rhodopseudomonas sphaeroides and Pulstris strains are immobilized.

[Explanation of symbols]

 1 Bathtub 2 1st flow path 3 2nd flow path 4 Mesh filter 5 Winch filter 6 Pump 7 Ejector 8 Purification module 9 Ultraviolet irradiation device 10 Mineral substance 11 Pyridinium type resin coating

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication C02F 1/68 520 K 530 D 540 B J Z

Claims (3)

[Claims] 1. A bathtub, a flow path for forcibly circulating water in the bath, a filtering device arranged in the flow path, a purification module for culturing microorganisms, an ejector for sending air to the purification module, and a sterilization device. A bath water purifying apparatus comprising the purification module filled with a pyridinium-type resin coating carrier having a porous mineral substance and bacteria having nitrifying activity immobilized thereon. 2. A bath, a flow path for forcibly circulating water in the bath, a filtering device arranged in the flow path, a purification module for culturing microorganisms, an ejector for sending air to the purification module, and a sterilization device. A bath water purifying apparatus comprising a purification module filled with a pyridinium-type resin coating carrier on which a porous mineral substance and bacteria having an odor substance decomposing activity are immobilized. 3. A bathtub, a flow path for forcibly circulating water in the bath, a filtering device arranged in the flow path, a purification module for culturing microorganisms, an ejector for sending air to the purification module, and a sterilization device. A bath water purifier equipped with a purification module filled with a porous mineral substance and a bacterial resin coating carrier having nitrifying activity.