JP3202502B2 - Water treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment apparatus.

[0002]

2. Description of the Related Art In a conventional water treatment apparatus, a ventilation plate 6 having a large number of concentrically formed slits 5 for passing gas as an oblique flow is provided inside a casing 4 as shown in FIGS. The lower casing 4 "is provided with an air supply port 2 and the upper casing 4 'is provided with a water supply port 7 and an exhaust port 3, and gas is supplied from the air supply port 2 into the upper casing 4' under pressure. A gas pressurizing and supplying member 8 for passing the gas as a gas flow against the water supplied from the water supply port 7 into the inside 4 '.
Is connected to the air supply port 2 and the lower casing 4 "is made to have a closed structure, and a water pipe 20 which penetrates the center of the ventilation plate 6 from below and projects to a predetermined height is connected to the lower casing 4".
A vertical partition 11 ′ is provided vertically from the outside toward the upper casing 4 ′ so that the water supplied from the water supply port 7 substantially makes a full turn, and a vertical partition wall 11 ′ for damming is provided from the upper part of the ventilation plate 6 to the drain pipe 20. The drainage pipe 20 is provided between the upper casing 4 'and the peripheral wall of the upper casing 4'.
A drain port 22 to be introduced into the upper casing 4 'is connected to a drain pipe 20 below the liquid surface 9 in the upper casing 4' and on the opposite side to the water inflow side.
Is provided on the peripheral wall of. In such a thing,
The so-called aeration in which water with a high concentration of contamination is sent from the water supply port 7 to the so-called aeration tank in the upper casing 4 ', and the air is pumped from below to bring the water and air into gas-liquid contact to evaporate and remove contaminants. A method of performing treatment and discharging treated water from a drain port 22 is disclosed in Japanese Patent Application No. 1-289663 and is well known. The contaminants mentioned here include trichloroethylene, tetrachloroethylene, dichloromethane, carbon tetrachloride, benzene, 1.1.1 trichloroethane, other organic chlorine compounds, mixtures thereof, and bacteria, viruses, molds, and the like.

[0003]

In the conventional water treatment apparatus as described above, when treating highly contaminated water, aeration is performed only for one layer in a single aeration tank, which increases the aeration time. In order to remove contaminants sufficiently, the size of the aeration tank must be increased, and the gas supply member must be correspondingly enlarged. There is.

It is an object of the present invention to solve the above-mentioned problems of the conventional water treatment apparatus and to provide a water treatment apparatus which is small and can efficiently treat water having a high concentration of contamination.

[0005]

According to the present invention, in order to achieve the above object, two upper and lower inclined vents having slits 5 and 5 'for allowing gas to pass through the casing 4 in an inclined flow. Plates 6 and 6 'are provided to form a lower casing 4 ", a middle casing 4', and an upper casing 4a 'having an open upper part in order from the lower side to the upper side. And a water supply port 7 and a water discharge port 22 at opposite positions on the peripheral wall of the middle casing 4 '.
A water supply port 7 ′ and a drainage port 22 ′ are provided at opposing positions on the peripheral wall of the upper casing 4 a ′, and the water supply port 7 ′ and the drainage port 22 are respectively defined by the upper casing 4 a ′ and the middle casing 4 ′. The drain port 22 'and the water supply port 7 are disposed on the same peripheral wall of the upper casing 4a' and the middle casing 4 ', respectively. , Connected by a water pipe 14 and the slit 5 of the ventilation plate 6
And the slit 5 'of the ventilation plate 6' are inclined in the opposite direction, and the water supply port 7 and the drain port are provided in the middle casing 4 '.
The first and third partitioning plates 12a to 12d are vertically separated from each other, and the upper ends of the first and third partitioning plates 12a and 12c are positioned below the liquid level 9 so that the second , 4th partition plate 12
b, 12d are positioned above the ventilation plate 6, an opening is formed between the lower end and above the ventilation plate 6, and a water supply port 7 is provided at a position facing the peripheral wall of the upper casing 4a '. ′ And the drain port 22 ′ are vertically divided into four partition plates 12 a ′
12d ', and the first and third partition plates 12a' and 12d '
The upper end of c ′ is positioned below the liquid level 9,
The lower end portions of the second partition plates 12b 'and 12d' are positioned above the ventilation plate 6 ', and an opening is formed between the lower end portion and the upper portion of the ventilation plate 6'. Things.

[0006]

According to the present invention, water contaminated by contaminants is supplied from a water supply port of a treatment portion of an upper casing, and water aerated at an upper stage is supplied to a drainage port of an upper casing and a water supply port of a lower stage of a middle casing. Is sent to the lower part by the connected water pipe, the aeration process is performed again in the middle casing, and the aerated treatment water is discharged from the drain port of the lower casing,
Contaminants are drained out of the device through openings in the upper casing.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An upper and lower two inclined ventilation plates 6, 6 'having slits 5, 5' for allowing gas to flow in an inclined flow inside a casing 4 are provided, and a lower casing 4 "is sequentially arranged from the lower side to the upper side. , A middle casing 4 ′, and an upper casing 4 a ′ having an open upper portion. The lower casing 4 ″ has an air supply port 2 to which an air supply blower 8 is connected, and a middle casing 4 ′ has a drain port 22. And upper casing 4
a 'is provided with a water supply port 7', the upper casing 4a 'and the middle casing 4' are connected by a water pipe 14, and the slits 5, 5 'of the ventilation plates 6, 6' are inclined in opposite directions. . Then, a water supply port 7 and a drain port 22 are provided at opposite positions on the peripheral wall of the middle casing 4 ', and a water supply port 7' and drain port 22 'are further provided at opposite positions on the peripheral wall of the upper casing 4a'.
The drain port 22 'of the upper casing 4a' and the water supply port 7 of the middle casing 4 'are connected by a water pipe 14, and the slit 5 of the ventilation plate 6 and the slit 5' of the ventilation plate 6 'are inclined in opposite directions. are doing.

A water inlet 7 is provided in the middle casing 4 '.
And the drain port 22 are vertically divided into four partition plates 12a to 12
d, the upper ends of the first and third partition plates 12a and 12c are positioned below the liquid level 9, and the lower ends of the second and fourth partition plates 12b and 12d are vented. 6 above,
An opening is formed between the lower end and above the ventilation plate 6,
At a position facing the peripheral wall of the upper casing 4a ', a vertical partition is formed between the water supply port 7' and the drain port 22 'so as to form four partition plates 12'.
a 'to 12d', and the first and third partition plates 12
a 'and 12c' are positioned below the liquid surface 9 and 2
The lower ends of the first and fourth partition plates 12b 'and 12d' are positioned above the ventilation plate 6 ', and an opening is formed between this lower end and the upper portion of the ventilation plate 6'.

In such a case, the water contaminated by the contaminants is sent into the upper casing 4a 'from the upper water supply port 7' and is aerated in the upper casing 4a 'having an open upper portion. The same reprocessing in the middle casing 4 'and the upper casing 4a' is repeated, and the water is discharged from the drain port 22 of the lower casing 4 ".
As described above, the aeration process is performed in multiple stages, and the lower the stage, the higher the degree of water purification. Thus, it is possible to sufficiently aerate water with a higher concentration of contamination than in the case of one stage to remove contaminants. If the degree of contaminant removal is the same, the entire apparatus can be made smaller than the conventional apparatus.

[0010]

According to the present invention, as described above, two upper and lower inclined ventilation plates 6, 6 'having slits 5, 5' for allowing gas to flow in an inclined flow are provided inside the casing 4. , The lower casing 4 ″ in order from below to above,
A middle casing 4 'and an upper casing 4a' having an open upper portion are formed, and the air supply port 2 is provided in the lower casing 4 ", and the water supply port 7 and the drain port 22 are provided at opposing positions on the peripheral wall of the middle casing 4 '. A water supply port 7 'and a drainage port 22' are provided at opposing positions on the peripheral wall of the upper casing 4a ', and the water supply port 7' and the drainage port 22 are respectively connected to the upper casing 4a '.
And a drain port 22 'and a water supply port 7 are disposed on the same peripheral wall of the middle casing 4' and the upper casing 4a '.
And a drain port 22 ′ and a water supply port 7 are connected by a water pipe 14, and a slit 5 of a ventilation plate 6 and a slit of a ventilation plate 6 ′ are arranged on the same peripheral wall as the middle casing 4 ′. 5 'is inclined in the opposite direction, and the middle casing 4' is provided with four partition plates 12a to 12d which vertically partition the water supply port 7 and the drain port 22. , Third partition plate 12
a, 12c are positioned below the liquid surface 9 and the lower ends of the second and fourth partition plates 12b, 12d are positioned above the ventilation plate 6. An opening is formed between the upper casing 4a 'and the upper casing 4a' at a position facing the peripheral wall, and a vertical partition is formed between the water supply port 7 'and the drain port 22' to form four partition plates 12a 'to 12d'. And the upper ends of the first and third partition plates 12a 'and 12c' are positioned below the liquid level 9, and the lower ends of the second and fourth partition plates 12b 'and 12d' are provided. Is positioned above the ventilation plate 6 'and an opening is formed between the lower end and the upper portion of the ventilation plate 6', so that aeration treatment is performed over two stages of the upper middle casing,
There is an effect that a highly efficient aeration effect can be realized.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a schematic vertical sectional view of a conventional water treatment apparatus.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water treatment apparatus 2 Air supply port 4 Casing 4 'Middle casing 4a' Upper casing 4 "Lower casing 5, 5 'Slit 6 6' Vent plate 7, 7 'Water inlet 9 Liquid level 12a-12d Partition plate 12a'-12d ′ Divider 14 Water pipe 22, 22 ′ Drain

Claims (1)

(57) [Claims] 1. An upper and lower two inclined ventilation plates 6, 6 'having slits 5, 5' for allowing a gas to flow in an inclined flow inside a casing 4, and the lower casing 4 is sequentially arranged from the lower side to the upper side. , A middle casing 4 ′, and an upper casing 4 a ′ having an open upper portion. The lower casing 4 ″ has an inlet 2, and a water inlet 7 at a position facing the peripheral wall of the middle casing 4 ′. The port 22 is provided with a water supply port 7 'and a drain port at positions facing the peripheral wall of the upper casing 4a'.
A water supply port 7 'and a water discharge port 22 are disposed on the same peripheral wall of the upper casing 4a' and the middle casing 4 ', respectively. The casing 4a 'and the middle casing 4' are arranged on the same peripheral wall, and a drain port 22 'and a water supply port 7 are connected to a water pipe.
14, the slit 5 of the ventilation plate 6 and the ventilation plate 6 '
The slit 5 'is inclined in the opposite direction, and the middle casing 4' is provided with four partition plates 12a to 12d which vertically separate the water supply port 7 and the drain port 22 from one another. The upper ends of the first and third partition plates 12a and 12c are positioned below the liquid surface 9, and the lower ends of the second and fourth partition plates 12b and 12d are positioned above the ventilation plate 6, An opening is formed between the lower end and the upper part of the ventilation plate 6, and the water supply port 7 'and the drainage port 22' are vertically partitioned at opposing positions on the peripheral wall of the upper casing 4a 'so that four sheets are formed. Partition plates 12a 'to 12d' are provided.
The upper ends of the first and third partition plates 12a 'and 12c'
Located below, the second and fourth partition plates 12b ',
A water treatment apparatus, wherein a lower end of 12d 'is positioned above a ventilation plate 6', and an opening is formed between the lower end and an upper portion of the ventilation plate 6 '.