JP2573454Y2 - Activated carbon water treatment tank - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention is mainly used in combination with ozone treatment for the tertiary treatment of sewage, the purification of pool water, the purification of ponds around golf courses, etc., and the adsorption and removal of organic substances dissolved in water. And an activated carbon water treatment tank for decomposing and reducing ozone remaining in water.

[0002]

2. Description of the Related Art Conventionally, activated carbon has been used as a method for removing organic substances dissolved in water.

[0003] As a method of utilizing the activated carbon, mainly,
A cylindrical tank is filled with granular activated carbon, and water to be treated in which organic substances are dissolved is supplied from above the tank.The water is passed through the granular activated carbon layer to reach the lower part of the tank. A method for adsorbing and removing the organic matter, and conversely to the above-mentioned method, supplying treated water in which the organic matter is dissolved from below the tank, and flowing the granular activated carbon in the tank together with the supplied treated water to remove the organic matter. And the like have been carried out.

[0004]

[Problem to be solved by the invention] In the former method,
Because the layer of granular activated carbon filled in the tank is fixed,
When used for a long period of time, dust and the like contained in the water to be treated cause clogging, which deteriorates the flow. In order to perform efficient adsorption and removal, backwashing is performed relatively frequently to remove the granular activated carbon. The clogging of the layers had to be removed.

[0005] Further, since the layer of granular activated carbon filled in the tank becomes thick, the water to be treated, which is supplied with an organic substance and dissolved therein, passes through the granular activated carbon layer, resulting in a large pressure loss. A pump with a large power was required to supply the water to be treated.

According to the latter method, since the granular activated carbon is caused to flow together with the supplied water to be treated,
Backwashing is not required without clogging, but a large amount of granular activated carbon is required to achieve the same treatment effect as when using a fixed granular activated carbon layer as in the former method. However, there was a problem that the size became large.

Further, when the granular activated carbon is used for a long time, the granular activated carbon is caused to flow together with the supplied water to be treated, so that part of the granular activated carbon becomes fine due to crushing or the like, and the granular activated carbon flows away together with the treated water. And so on.

The present invention has been made in view of the above circumstances, and reduces the pressure loss when water to be treated in which organic substances are dissolved passes through a granular activated carbon layer, and eliminates the need for backwashing of the granular activated carbon layer. An object of the present invention is to provide a compact activated carbon treatment water tank which can prevent the spillage and can save space for installation.

[0009]

In order to solve the above-mentioned problems, the present invention is directed to a water-guiding chamber, a filtration chamber, an empty chamber, and the like, which are formed in a closed box shape having upper and lower surfaces closed, and each of which has a vertically arranged porous material. Partitioned into an activated carbon chamber and a drainage chamber, the water conduction chamber and the filtration chamber are further divided into two by a partition wall provided at substantially the center of each of the two chambers. Backwash water discharge ports are provided on the upper surface, respectively.Aperture pipes are respectively provided at the lower portions in the two chambers of the divided filtration chamber, and a filter medium is filled therein, and the activated carbon chamber is granular. Activated carbon is filled, and the drainage chamber is provided with a treated water discharge port.

[0010]

According to the present invention, if water to be dissolved in contact with ozone is used as the water to be treated, the particulate filter medium 24, fine stones and the like 25,
The adhesion and propagation of microorganisms to the granular activated carbon 27 and the granular activated carbon 26 can be prevented, and the ozone can oxidize and decompose the organic matter adsorbed on the granular activated carbon to further extend the life.

In the present invention, the water to be treated, in which the organic matter is dissolved, is taken into the inside from the water supply ports 11 and 12 provided in the two divided chambers 2 and 3 of the water supply chamber, and the flow velocity thereof is reduced.

Next, the water to be treated is filtered by passing through the particulate filter medium 24 filled in the two divided chambers 4 and 5 of the filtration chamber, and the flow of water is leveled.

Further, the water to be treated passes through the empty chamber 6, passes between the fine stones 25 and the like in the filtration chamber 7, and flows into the activated carbon chamber 8 filled with granular activated carbon 26.

When passing through the activated carbon chamber 8, the organic matter dissolved in the water to be treated is adsorbed and removed, and the remaining dissolved ozone is reduced.

Thereafter, the treated water that has passed through the activated carbon chamber 8 passes between the fine stones 27 in the filtration chamber 9, reaches the drain chamber 10, and is discharged from a discharge port 15 provided therein to an external reuse destination. You.

If the treatment tank A of the present invention is used for a long time, the particulate filter medium 24 is clogged by dust and the like contained in the water to be treated.

In the present invention, the clogging is caused by the pressure sensor 2
1 is detected.

That is, the water guide pipes 44, 28 and 29
When the water pressure inside reaches a certain value or more due to the clogging,
First, the automatic water guide valve 16 is closed, and the automatic backwash water discharge valve 18 is opened. Subsequently, the process water outlet automatic operation valve 20 is closed, and the electromagnetic valve 33 is opened to supply air from the air supply pipe 35 to the air diffuser 22.

As a result, the water to be treated from the water introduction port 12 is supplied from one room 3 of the water introduction room 1 to one room 5 of the filtration room 51 and further supplied to the empty room 6.

However, since the treated water outlet automatic operation valve 20 is closed, it flows into the other chamber 4 of the filtration chamber 51 from the back and backwashes the particulate filter medium 24 therein.
The washing water containing dust and the like is pushed back to one room 2 of the water guide chamber 1 by the action of the air bubbles floating between the particulate filter media 24, and is passed through the backwash water discharge port 13 through the backwash water discharge pipe 30. It is discharged outside.

After the particulate filter medium 24 in the other chamber 4 of the filtration chamber 51 is backwashed for a certain period of time, the solenoid valve 33
Is closed, the supply of air to the air diffuser 22 is stopped,
Further, the automatic water guiding valve 17 and the automatic backwash water discharging valve 18 are closed.

Next, backwashing of the particulate filter medium 24 in one of the filtration chambers 51 is performed.

That is, the backwash water discharge automatic operation valve 19
Is opened and the automatic water guiding valve 16 is opened, and the water to be treated from the water introducing port 11 is supplied from the other room 2 of the water introducing chamber 1 to the other room 4 of the filtration chamber 51, and the empty room 6 is opened. Then, it flows in from the back of one of the chambers 5 of the filtration chamber 51, and at the same time, the solenoid valve 34 is opened to open the air supply pipe 3.
Air is supplied to the air diffuser 23 from 6, and the particulate filter medium 24 in one of the chambers 5 of the filtration chamber 51 is backwashed in the same manner as described above, and washing water containing dust and the like is discharged from the backwash water outlet 14. The water is discharged outside through the backwash water discharge pipe 31.

After the backwashing for a predetermined time, the solenoid valve 34
Is closed, the supply of air to the air diffuser 23 is stopped,
Further, the backwash water discharge automatic operation valve 19 is closed, and the treated water outlet automatic operation valve 20 and the water introduction automatic operation valve 17 are opened.

As a result, the state becomes the initial state, and the water to be treated is purified again.

[0026]

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

FIG. 1 is a partially cutaway perspective view of an activated carbon water treatment tank A of the present invention, and FIG. 2 is a conceptual diagram showing a case where the activated carbon water treatment tank A of the present invention is used in a sewage tertiary treatment system.

The activated carbon water treatment tank A of the present invention is, for example, as shown in FIG. 2, a sewage tertiary treatment system including a final sedimentation tank 41, a water pump 42 and an ozone contact dissolution tank 43 in the sewage treatment step. It is put to practical use by constituting a part.

That is, the activated carbon water treatment tank A of the present invention comprises:
As shown, the ozone contact dissolution tank 4 of the water purification system
The ozone-dissolving tank 43 is provided at the end of the tank 3, and the water to be treated in which ozone is dissolved by the ozone contact dissolving tank 43 is taken into the inside to perform filtration, adsorption and removal of dissolved organic matter, and catalytic decomposition of dissolved ozone.

As shown in FIG. 1, the activated carbon water treatment tank A of the present invention is made of an ozone-resistant plastic or the like in a closed box shape having upper and lower surfaces closed, and the insides thereof are vertically arranged. The water introduction chamber 1, the filtration chamber 51,
The chamber is partitioned into an empty space 6, an activated carbon room 8, and a drainage room 10, and is configured to take in the water to be treated in which ozone is dissolved, and perform filtration, adsorption and removal of dissolved organic matter, and catalytic decomposition of dissolved ozone.

In the embodiment shown in the drawings, filtration chambers 7 and 9 filled with fine stones 25 and 27 are provided on both sides of the activated carbon chamber 8 to protect the granular activated carbon 26 in the activated carbon chamber 8 from clogging and the like. I have.

Further, a substantially central portion of the water guide chamber 1 is provided with a partition wall 3.
8 into two rooms 2 and 3;
Water inlets 11 and 12 for introducing the water to be treated, which has been ozone contact-dissolved in the ozone contact dissolving tank 43 shown in FIG. 2, are provided therein. Are connected to each other.

Further, the water pipes 28 and 29 include:
Automatic water guiding valves 16 and 17 for introducing the water to be treated are provided, respectively, and a pressure sensor 21 is attached to an appropriate position of the water guiding pipe 44.

Further, backwash water outlets 13 and 14 for washing water discharge are provided on the upper surfaces of the two chambers 2 and 3, respectively. Backwash water discharge pipe 3 for discharging wash water to the outside
0 and 31 are connected respectively.

Further, the backwash water discharge pipes 30 and 31
Are provided with backwash water discharge automatic operation valves 18 and 19, respectively.

The filtration chamber 51 is divided into two chambers 4 and 5 by a partition 38a at a substantially central portion, similarly to the water guide chamber 1, and each of them is filled with an appropriate filter medium, for example, a granular filter medium 24 having a light specific gravity. Further, air diffusion tubes 22 and 23 for cleaning the clogging of the particulate filter medium 24 are provided below the respective rooms 4 and 5, and air is supplied to the air diffusion tubes 22 and 23 from the outside. Supply air supply pipes 35 and 36 are connected respectively.

Further, the air supply pipes 35 and 36 are provided with electromagnetic valves 33 and 34 for controlling air supply to the air diffusers 22 and 23, respectively.

Next, an empty space 6 is provided next to the filtration chamber 51, and the inside of the activated carbon chamber 8 provided next is filled with granular activated carbon 26. The granular activated carbon 26 is filled with ozone dissolved therein. Organic matter dissolved in the water to be treated is adsorbed and removed by passing the treated water, so that the remaining dissolved ozone is reduced.

In the embodiment shown in the drawings, filtration chambers 7 and 9 in which fine stones 25 and 27 are filled on both sides of the activated carbon chamber 8 are formed.

Further, a drainage chamber 10 is provided following the filtration chamber 9, and the drainage chamber 10 is provided with a discharge port 15, which supplies treated water to an external reuse destination. And a treated water outlet automatic operation valve 20 for supplying treated water is connected to the treated water supply pipe 32.

The activated carbon treatment water tank A according to the present invention having the above-described structure comprises:
The water to be treated, which has been ozone contact-dissolved in the ozone contact dissolution tank 43 shown in FIG.
And 29, the water is taken into the inside from the water introduction ports 11 and 12 provided in the two chambers 2 and 3 of the water introduction chamber 1, and the flow velocity is reduced in the water introduction chamber 1.

Next, the water to be treated is filtered by passing through the particulate filter medium 24 in the two chambers 4 and 5 of the filtration chamber, and the flow of water is leveled.

Further, the water to be treated passes through the empty room 6, passes between the fine stones 25 in the filtration room 7, and passes between the granular activated carbons 26 in the activated carbon room 8.

During the passage between the granular activated carbons 26, organic substances dissolved in the water to be treated are adsorbed and removed, and the remaining dissolved ozone is reduced.

Thereafter, the treated water that has passed through the granular activated carbon 26 enters the drainage chamber 10 between the fine stones 27 of the filtration chamber 9 and the like, and passes through the treated water supply pipe 32 from the discharge port 15 provided therein. Emitted to external reuse destinations.

When the treatment tank 1 is used for a long time, the particulate filter medium 24 filled in the two chambers 4 and 5 of the filtration chamber 51 is clogged by dust and the like contained in the water to be treated.

As a result, the water guide pipes 44, 28 and 29
The internal pressure is increased, and the pressure sensor 21 detects an increased pressure, that is, clogging.

When the pressure sensor 21 detects clogging, the automatic water guiding valve 16 is closed and the automatic backwash water discharging valve 18 is opened.

Subsequently, the treated water outlet automatic operation valve 20 is closed, the solenoid valve 33 is opened, and air is supplied from the air supply pipe 35 to the diffuser pipe 22, and the filtration chamber 51 is opened.
Bubbles float between the particulate filter media 24 on the one room 4 side, and clogging between the particulate filter media 24 is eliminated.

In this state, the water to be treated is supplied from the water guide pipe 44 through the water guide pipe 29 to the one room 3 of the water guide chamber 1 to the one room 5 of the filtration chamber 51, and further to the empty room 6. .

However, since the treated water outlet automatic operation valve 20 is closed, the other chamber 4 of the filtration chamber 51 is closed.
Backwashing the particulate filter medium 24 therein, the washing water containing dust and the like is pushed out into one chamber 2 of the water introduction chamber 1 by the action of the air bubbles, and the backwash water outlet 1
3 is discharged outside through a backwash water discharge pipe 30.

After the backwashing for a certain period of time, the solenoid valve 33
Is closed, the supply of air to the air diffuser 22 is stopped,
Further, the automatic water guiding valve 17 and the automatic backwash water discharging valve 18 are closed.

Next, the backwashing of the particulate filter medium 24 in one of the filtration chambers 51 is performed. That is, the backwash water discharge automatic operation valve 19 is opened, the water guide automatic operation valve 16 is opened, the solenoid valve 34 is opened, and air is supplied from the air supply pipe 36 to the air diffusion pipe 23. The granular filter medium 24 in the room 5 is back-washed,
Wash water containing dust and the like is discharged from the back wash water discharge port 14 to the outside through the back wash water discharge pipe 31.

After the cleaning for a certain time, the solenoid valve 34
Is closed, the supply of air to the air diffuser 23 is stopped,
Further, the backwash water discharge automatic operation valve 19 is closed, and the treated water outlet automatic operation valve 20 and the water introduction automatic operation valve 17 are opened.

As a result, the state becomes the initial state, and the water is purified again.

[0056]

According to the present invention, the water to be treated, in which organic matter is dissolved, is passed between the granular activated carbons in a lateral direction, so that the pressure loss can be reduced, and the backwashing of the granular activated carbon becomes unnecessary, and the activated carbon is further consumed. Is prevented, and the filtering portion and the activated carbon treatment portion can be integrated, and an effect such as a compact configuration without taking a place for installation can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of an activated carbon water treatment tank of the present invention.

FIG. 2 is a conceptual diagram showing a case where the activated carbon treatment tank of the present invention is used in a sewage tertiary treatment system.

[Explanation of symbols]

 A activated carbon water treatment tank 1 water introduction chamber 2, 3 two water introduction chambers 4, 5 two filtration rooms 6 vacant room 8 activated carbon room 10 drainage chamber 11, 12 water introduction port 13, 14 backwash water discharge port 15 drainage Outlets 22, 23 Aerator tubes 24 Granular filter media 25, 27 Fine stones, etc. 26 Granular activated carbon 51 Filtration chamber

Claims (1)

(57) [Scope of request for utility model registration] 1. A closed box shape having upper and lower surfaces closed, and the inside is partitioned into a water guide chamber, a filtration chamber, an empty chamber, an activated carbon chamber, and a drain chamber by a vertically arranged porous material. The chamber is divided into two by a partition provided at a substantially central portion of each of the two, and the two divided water guide chambers are respectively provided with a water inlet, and the upper surface is provided with a backwash water outlet, respectively. A diffuser tube is provided at the bottom of each of the two divided filtration chambers, and a filter medium is filled therein.Furthermore, the activated carbon chamber is filled with granular activated carbon, and the drainage chamber has a treated water discharge port. An activated carbon water treatment tank, which is provided.