JPH05168820A - Device for sterilizing and filtering water - Google Patents

Abstract

PURPOSE:To provide a filter using a filter medium of an active stone instead of active carbon and to prolong the service life of the filter medium by generating ozone in the filter, passing the ozone and water through the filter medium and discharging the nitrogenous contaminant adsorbed on the filter medium. CONSTITUTION:This filter is provided with a filter main body 11, a raw water inlet 111 opened at the lower part of the side wall 110 of the main body 11, a filtrate outlet 112 opened at the upper part of the side wall 110 of the main body 11, an active-stone filter medium 14 provided in the main body 11 below the outlet 112, an external air injection nozzle 16 furnished directly above the inlet 111 and below the filter medium 14, a device for supplying air to the nozzle 16 from outside the main body 11, UV lamp 13 extending between the filter medium 14 and the nozzle 16 and a top board 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilizing and filtering device for water, and more particularly to a device for sterilizing and filtering water by irradiating a part of the air sent into water with ultraviolet rays to make it ozone.

[0002]

2. Description of the Related Art As a conventional technique, the actual fair is 3-2335.
There is a hot water pool purification and sterilization device described in Japanese Patent No.
This conventional device is an ozone generator that generates ozone for decomposing organic matter contained in warm water pool water provided in a circulation path of warm water pool water, and warm water containing organic matter and ozone decomposed by the ozone. A hot water pool purification and sterilization device having an activated carbon filtration device for introducing and filtering pool water and a gas vent provided in the activated carbon filtration device.

Since the above-mentioned conventional apparatus uses the activated carbon filtration apparatus, the main raw materials thereof are activated carbon and black charcoal, and have the following drawbacks. (1) Chlorine adsorption rate is fast. (2) Black powder mixes with water in the initial stage. (3) Regeneration capacity is poor, and regeneration costs increase especially when sludge is attached.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a filtering device using a filter material made of activated stone rather than activated carbon in order to eliminate the above-mentioned drawbacks of the conventional device, and to provide an ozone generator like the conventional device. To generate ozone inside the filter rather than separately from the filter and to pass this ozone with water through the filter, thereby decomposing nitrogen-based dirt adsorbed on the filter. Therefore, it is an object of the present invention to provide a novel sterilization filter device capable of extending the life of the filter medium.

[0005]

Means for Solving the Problems The above-mentioned problems include a filter main body, a raw water inlet opening at a lower portion of a side wall of the main body, and a filtered liquid outlet opening at an upper portion of a side wall of the main body. An activated stone filter medium provided inside the main body below the filtrate outlet, an external air jet nozzle provided below the filter medium and close to the raw water inlet at an upper position thereof, and from outside the main body to a nozzle. A solution for sterilizing and filtering water is provided, which comprises a device capable of supplying air, an ultraviolet lamp extending between the filter medium and the nozzle, and a top plate.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENT In FIG. 1, the reference numeral (1) generally designates a filtering device. The reference numeral (11) refers to the main body of the filter, and the raw water inlet (1
11), a filtrate outlet (112) is provided in the upper part of the side wall (110), and an activated stone filter medium (14) is provided in the main body (11) just below the outlet (112). Filter material (1
4) is supported by a perforated plate. An air jet nozzle (16) is provided below the filter medium (14) and immediately above the raw water inlet (111), and air is supplied from the outside through a pipe (15). An ultraviolet lamp (13) extending between the filter medium (14) and the nozzle (16) is provided.
3) is housed in a protection tube (not shown), a terminal for supplying electricity is provided at the upper end, and is exposed to the outside of the filter body (11).

[0007] Activated stones can adsorb nitrogen-based dirt and decompose it, and can promote the decomposition by passing ozone through this filter medium. Table 1 shows the composition comparison of various activated stones. The numerical values in the table are% by weight.

[Table 1] Basalt is the most preferable because it is rich in basic components and low in silicic acid. The basalt material is processed into a porous ceramic ball and stored in a net. Dirt is adsorbed, aerated with ozone, oxidatively decomposed and gasified, and removed from the degassing pipe (17). The filter medium made of basalt processed into a ceramic ball shape (particularly, a konpeito shape) has the following advantages. (1) Chlorine adsorption rate is slow. (2) Adsorption capacity is three times that of activated carbon. (3) Good reproduction ability. (4) It has a catalytic action. (5) The amount used may be half that of activated carbon. (6) The material adsorption capacity is stabilized. Cleaning with activated stones other than basalt was done once every three months, but with basalt, cleaning once every three years was sufficient.

The filter body (11), especially the inner wall (11)
0) to prevent oxidation of stainless steel [316, 3
04] is preferable.

For water having a relatively high oil content, it is preferable to provide a pretreatment device (2) containing a fat / oil adsorbent (23) in front of the filtration device (1).

[0010]

EFFECTS OF THE INVENTION Since the present invention has the above-described structure and operation, it treats hot water in hot water pools and baths, treats fats (oils) excreted from the human body, hot water stains, hair skirts, tap water in buildings and condominiums. It has an excellent effect on the treatment tank, the removal of spoilage, water-bloom, chloramine, the removal of water stain and the like. Further, it can be widely used as a device for decomposing and sterilizing pesticides in golf course ponds.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an embodiment of a water sterilization filtration device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Filtration apparatus 2 ... Pretreatment apparatus 11 ... Filtration machine main body 12 ... Top plate 13 ... Ultraviolet lamp 14 ... Filter material 15 ... Air supply pipe 16 ... Nozzle 17 ... ..Degassing pipe 23 ... Oil adsorbent 110 ... Side wall 111 ... Raw water inlet 112 ... Filtrate outlet

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical indication C02F 1/32 9262-4D 1/50 C 7158-4D 1/78 9045-4D 9/00 Z 6647 -4D 6953-4D B01D 35/02 Z

Claims (4)

[Claims] 1. A filter body (11) and said body (11)
Raw water inlet (1) opening at the lower part of the side wall (110) of the
11), a filtrate outlet (112) opening at an upper portion of the side wall of the main body (110), and an activated stone filter medium (11) provided below the filtrate outlet (112) in the main body (11). 14), an external air jet nozzle (16) provided below the filter medium (14) and close to the raw water inlet (111) and at an upper position thereof, and a nozzle (1) from outside the main body (11).
6) a device capable of supplying air and an ultraviolet lamp (1) extending between the filter medium (14) and the nozzle (16)
3) and a top plate (12), which is a sterilizing and filtering device for water. 2. The apparatus for sterilizing and filtering water according to claim 1, wherein the activated stone filter medium (14) is made by firing basalt and processing it into ceramic balls. 3. The apparatus for sterilizing and filtering water according to claim 1, wherein the top plate (12) is provided with a gas vent pipe (17). 4. A raw water inlet (1) of the filter body (11).
The water sterilization filtration device according to claim 1, 2 or 3, wherein a degreasing treatment device (2) containing an oil and fat adsorbent (23) is provided in the preceding stage of 11).