JPS61136482A - Water purification apparatus - Google Patents

Abstract

PURPOSE:To reduce manufacturing cost, by filling a purification unit with activated carbon so as to leave a gas vent space and stacking a required number of purification units. CONSTITUTION:Contaminated tap water is flowed into an inlet chamber 7 from inlet pipes 8, 8 and flowed into the laminated bed of activated carbon 18 from the through-holes of a perforated plate 14 and, during this time, the contaminant contained in tap water is adsorbed and removed by activated carbon. Purified water is further upwardly passed through a purification unit 3B of an upper stage and finally passes through the purification unit 3C of the uppermost stage to be further purified and flowed into an outlet chamber 24 of an outlet 4 to be taken out from an intake pipe 25. The regeneration treatment of activated carbon, of which the purification capacity was lowered, is performed by applying pulse voltage to electrode rods 151 and 152, 152 and 153..., while said electrode rods are moved in combination to the traverse direction, to remove the contaminant in tap water.

Description

[Detailed Description of the Invention] [Industrial Application Field] The BAFi water purification device of the present invention is particularly concerned with stacking a plurality of purification units each filled with granular or lumpy activated carbon, and each purification unit is filled with activated carbon. The present invention relates to a water purification device equipped with a regeneration and activation mechanism.

[Technical background and problems of the invention]

Generally, to supply tap water to high-rise pildings and public housing, tap water sterilized with #i element is introduced from the purification plant into a water storage tank installed in the basement of the building. The water in the water storage tank is pumped into a water supply tank installed on the roof of the building, and then supplied to each house through pipes. The water in the water storage tank mentioned above is often contaminated with various bacteria during the period of use.
11 K used as drinking water has become a sanitary problem. In addition, chlorine is effective for killing various types of bacteria contained in stored water, but when chlorine combines with ammonia, trihalomethane is produced, and this trihalomethane is a carcinogenic substance, so it should not be used in drinking water. Recently, it has become more and more reliable to purify tap water beforehand. Konoyo 5
IC-contaminated tap water is passed through granular or lumpy activated carbon, and the contaminants are adsorbed and removed by the activated carbon.

In general, activated carbon has a large adsorption capacity and is preferable as a treatment agent, but as the adsorption capacity approaches a saturated state and the adsorption capacity decreases, it no longer functions as a treatment agent. Once the adsorption performance has deteriorated in this way, activated carbon cannot be used again unless it is subjected to regeneration treatment to remove adsorbed substances. Therefore, purification devices using activated carbon have a problem of high running costs, that is, high recycling costs. In addition, in high-rise residences and building pumps, the amount of water that must be treated is large, so the amount of activated carbon that must be used is also large, and when activated carbon is filled in a large single-layer purification container, the gas generated during activated carbon regeneration can escape. There was a problem that it was difficult to play without being damaged.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a water purification device that can remove adsorbed substances from a large amount of activated carbon whose adsorption performance has deteriorated due to adsorption of adsorbed substances on the surface of the activated carbon, thereby regenerating and activating the activated carbon. .

[Structure of the invention]

In order to achieve the above object, the water purification device according to the present invention includes an inlet frame having an inlet chamber therein for introducing water to be purified, and an outlet frame having an outlet chamber therein for leading out the purified water. and a plurality of purification units stacked between the inlet frame and the outlet frame, each purification unit has an outer frame with an open bottom, and a perforated plate is stretched over the bottom opening. On the other hand, a plurality of electrode rods are placed above and below this porous plate.
The purification units are constructed in parallel across the stages at predetermined intervals, and the inside of each purification unit is filled with activated carbon so as to leave a degassing space in the upper part of the outer frame.

In the present invention configured in this manner, when a pulse voltage is sequentially applied between adjacent electrode rods during regeneration and activation of activated carbon, a large amount of spark discharge is generated between the activated carbon particles between the electrodes, and the adsorption occurs. Desorption of substances takes place within a short period of time. Water vapor and gas are generated during regeneration and activation, and these water vapors can be exhausted to the outside through the gas vent space of each purification unit. In addition, pairs of electrode rods that generate spark discharge can be moved sequentially by appropriately selecting adjacent pairs of electrode rods, thereby reducing the amount of electric power required during reproduction.

[Embodiments of the invention]

Embodiments of the water purification apparatus according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a side view of a water purification device according to the present invention, and the water purification device, which is designated as a whole by reference numeral 1, has an inlet frame 2.
It is composed of three sets of purification units 3^, 3B, and 30 stacked on top of each other and an outlet frame 4. The entrance frame 2 has a bottom plate 5 having a furnace-like planar shape, and on the top surface of the bottom plate 5,
A side wall 6 of uniform height is bifurcated into a square shape, and an entrance chamber 7 is formed inside. An inlet pipe 8.8 for introducing wastewater to be treated is connected to a pair of opposing sides of the side walls 6, forming a trap through which the wastewater to be treated is introduced into the inlet chamber 7.

The purification units 3A, 3B, and 30 have the same configuration. Taking one of them 3A as an example and explaining it with reference to FIG. 3, the purification unit 3 has an outer frame 9, and The outer frame 9 has a body wall 10 that is framed in a square shape, and flanges 11 of uniform width are provided at both ends of this body wall 10.
1 are integrally formed, and these flanges IIK have a large number of mounting holes 12 drilled at a constant pitch for passing bolts.

This outer frame 9 is preferably made of stainless steel.

Further, the inner side of the body wall 10 of the outer frame 9 is lined with a heat-resistant material, for example, heat-resistant cement 13, and a perforated plate 14 is stretched over the lower opening of the body wall 10. There is. The perforated plate 14 may be a punched plate, preferably coated with a heat-resistant plastic material.

On the other hand, inside the outer frame 9, a lower electrode rod 15+ 15.・・・・・・１
5° and lower electrode rod 16.16.・・・・・・16. and will be erected and laid down. Upper electrode rod 15.15.・・・・・・
・15. are installed in parallel in a horizontal plane at a constant pitch m, while the lower electrode rods 16.16.・・・・・・１
6. are installed in parallel at a constant pitch n in a horizontal plane separated by a distance in the vertical direction. This pitch n
and the pitch m are set equal to 1, so that the corresponding electrode rods in the upper and lower stages are located parallel to each other in a vertical plane.

In addition, both ends of each electrode 1!15.16 are connected to the outer frame 9, respectively.
An insulating tube 17 is provided through the body wall 10 of the tube 1, and an insulating tube 17 is provided in the μ-through portion thereof to ensure insulation.

Therefore, the purification unit 3 is filled with activated carbon 18 in the form of granules or blocks, and the capacity of the activated carbon 18 is as follows:
Upper electrode rod 15115. . . . 15-1 is buried and the degassing space 19 is formed above the purification unit 3 in the assembled state.

The purification capacity of the three purification units configured in this way is set in advance so that one unit can purify the amount of water used by a household, for example, and in the illustrated embodiment, there are three purification units (22). 3B.

Thirty containers are stacked vertically, making it possible to purify 150 households. It is desirable to interpose a suitable sealing gasket between the joint surfaces of each purification unit, and each flange is connected to a plurality of bolt nuts □□□, 20.
・・・・・・A close KM meeting is held by 20 people.

Gas vent branch pipes 21, 21.21 are opened and connected to each outer frame 9 in order to extract gas such as water vapor from the gas vent space 19 of each purification enine) 3A, 3B, and 3CO. An exhaust blower is incorporated on the downstream side of main pipe 4.

On the other hand, the outlet frame 4 is tightly overlapped with the upper surface of the flange 11 of the uppermost purification unit 3,
0.20. - Old: Connected by 20Vc. An outlet chamber U for passing purified tap water is formed inside the outlet frame 4, and a water intake pipe δ for taking out the purified water is attached to the top.

Since the present invention is configured in this manner, contaminated tap water to be purified flows into the inlet chamber 7 through the inlet pipes 8, 8, and passes through the permeation holes of the perforated plate 14 into the laminated layer K1 of the activated carbon 18.
During this period, the pollutants contained in tap water were activated carbon.
It is adsorbed and removed by 8.

The purified water further passes upward through the upper purification unit 3B while being subjected to the same action, and finally, when passing through the uppermost purification unit 30, it is further purified and flows into the outlet chamber U of the outlet frame 4. It flows in and is dispersed from the intake pipe δ.

During this period, while the activated carbon 18 has adsorption capacity, it removes pollutants from the wastewater and purifies the wastewater, but after a large amount of pollutants have been adsorbed to the surface of the activated carbon 18, the purification capacity decreases and regeneration treatment is required. It will stop happening.

Next, the method of reactivation treatment according to the present invention will be described.

To perform the reactivation process, a pulse voltage may be sequentially applied between adjacent electrode rods.

There are many possible ways to combine the pair of electrode rods to cause this discharge, such as electrode rod 15. and 153.15
, and 15. It is also possible to move the combinations in the horizontal direction sequentially as shown in . . .
, -16. ．． 15. -16. . . . The method of assembling the electrode rods can be freely selected. In either case, a pulse voltage is applied to the electrodes of adjacent electrodes, which generates a large amount of spark discharge between the activated carbon particles between the electrodes, which adsorb onto the surface of the activated carbon. Adsorbed substances can be easily desorbed. A large number of granular activated carbons 18, 18... are placed between the electrode rods.
Since the particles 18 are in contact with each other and packed together, the activated carbon can be regenerated and activated in a short time. This activated carbon 18
Gas containing water vapor is generated during the reactivation process. This gas temporarily accumulates in the gas vent space 19 of each purification unit 3, but by driving the exhaust blower 6, it can be removed through the gas vent main pipe n.
Air can be bled inside and released to the outside. In terms of degassing, it is preferable to carry out the reactivation treatment of the activated carbon from the upper layer to the lower layer of the activated carbon 18 layer. Further, gas generated during regeneration adheres to the surface of the activated carbon, but this can be easily removed by finally heating the whole to 200C, thereby completing the regeneration activation process.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, a degassing space is left in the purification unit and activated carbon is filled, and the required number of purification units is stacked, so the number of purification units can be increased or decreased. The amount of water to be purified can be handled by simply doing this, and the purification unit itself can be mass-produced, reducing manufacturing costs. Furthermore, since a degassing space is secured between the purification unit and the activated carbon, gases such as water vapor generated during the activated carbon regeneration process can be easily extracted and the regeneration process can be performed smoothly. Furthermore, since a plurality of electrode rods are installed in two stages within the purification unit and a discharge voltage is applied to one set of adjacent electrode rods, the power consumption required during regeneration activation can be kept low.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the water purification device according to the present invention, Fig. 2 is a plan view of the same water purification device, Fig. 3 is a perspective view showing the purification unit, and Fig. 4 is a water purification device. FIG. 3 is a longitudinal cross-sectional view of the device. l... Water purification device, 2... Entrance frame, 3A, 3B, 3
0... Purification unit, 4... Outlet frame, 7... Inlet chamber, 9... Outer frame, 14... Porous plate, 15... Upper electrode rod, 16... Lower electrode rod , 17... Insulating tube, 1
8...Activated carbon, 19...Gas venting space,...
Gas venting branch pipe, ρ...main gas venting pipe, B...exhaust blower, M...exit chamber, δ...water intake pipe.

Claims (1)

[Scope of Claims] 1. An inlet frame that includes an inlet chamber for introducing water to be purified; an outlet frame that includes an outlet chamber for leading out purified water; and the inlet frame and outlet frame. Each purification unit has an outer frame with an open bottom, a perforated plate is stretched over the bottom opening, and a perforated plate is placed above the perforated plate. , multiple electrode rods are placed above and below 2
A water purification device characterized in that each purification unit is installed in parallel at predetermined intervals and filled with activated carbon inside each purification unit so as to leave a degassing space in the upper part of the outer frame. 2. Claim 1, wherein the purification unit is comprised of a stainless steel outer frame with flanges at both ends, and a heat-resistant cement layer lined inside the outer frame. The water purification device described in . 3. The water purification device according to claim 1, wherein both ends of the electrode rod are supported by an outer frame of the purification unit via an insulating tube. 4. The water purification device according to claim 1, wherein a gas venting pipe is connected to each of the gas venting spaces, and an exhaust blower is installed on the pipe path of the gas venting pipe. .