JPS58183933A - Contact medium - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to biological wastewater purification performed using a rotary contactor and relates to IIKm catalyst bodies.

Biological treatment of wastewater mK uses a rotating contact medium which provides an ostensible surface for loading water or biological slime. Such a medium is placed in a water treatment tank, with the lower half of the medium immersed in the wastewater and the upper half exposed to the atmosphere.
He was tricked into giving out 11 liters.

The lower and lower halves of their media are exposed to wastewater and atmospheric oxygen (alternating KMj & 2000), depositing slime on their surfaces.The importance of media design using multiple discs to increase the paddle size have been introduced in the past. In such designs, the contacting discs are bonded with adhesive or
! From iK [combined (・ru.

It is an object of the present invention to provide a medium with high permeability Vf.

Another object of the invention is to provide a medium having adjacent disks that fit together.

Yet another object of the invention is to provide a medium that is sturdy, stable, and relatively low profile.

Briefly, the present invention provides a contact medium for removing waste from wastewater, each having a plurality of parallel convex lips and a plurality of parallel reverse lips arranged alternately with the convex lips. Consisting of two interdigitated discs, each convex lip has a top surface with a series of equally spaced recesses, and each inverted rib has a top surface with a series of equally spaced concavities. is a series of INK equally spaced vIIIK arranged disks on opposite axes!!
The concave portion of each reverse lip of one disk and the concave portion of each convex rib of the other disk are mutually fitted,
The two interdigitated discs form intersecting chordal channels for the passage of wastewater, the surfaces of which provide a field for the growth of microorganisms and reduce the amount of oxygen transferred. The water treatment device 10 is designed to provide a contact medium characterized by the following features:
1!13, and a side wall 12 to which a pair of bearings 14 are fixed.
A tank 11 is provided.

The bearing 14 has a removable one-winged end frame 22.2.
A shaft 20 having a diameter of 4 is supported so as to cross the shaft 11. Axis 2 OK has two or more 1I in 5 as shown in the diagram.
Il! Disc with the same structure 32.52m...
A contact medium consisting of is mounted and the discs are compressed between frames 22 and 24 and fitted together.

The contact medium is connected to the shaft 20 by an internal frame 28 at 12
It is preferable to divide the media into media sections with a width of jl1. Wastewater is introduced into the tank 11 through a communication port (not shown), treated, and extracted from the tank. Shaft 20 and it KW
The defined medium So is moved by a motor (not shown) to -
be transferred.

To explain with reference to FIGS. 2 and 5, a delicate parallel convex lip 54 (hereinafter referred to as a single K "rip") and a plurality of parallel reverse ribs 56 that separate the convex lips that are in contact with each other from each other. (Gate ribs that are the reverse of the convex ribs 54) ◇The lips 54 and the reverse lips s6 are arranged alternately in a 1j11 relationship. Dista s2
has a circular central hole for receiving the shaft 20. usually,
The overall thickness of the disc 32 is 11 m (2 & 4 mm), and the distance between the longitudinal center lines Y and Y of two adjacent slips is 21 m (5α8 sea bream scraps). Disk 52 is formed from polymeric, nearly pure polyethylene material.

Each rib S4 has a series of equally spaced recesses 35 and a wide end! ! It has a flat y4 plane that includes a part of the plane 59 and 59 (Figures 5 and 7). The reverse rib S4 is 1i of the convex rib s4.
It has a series of equally spaced recesses S7 on the surface opposite to the ith 55 to maintain a constant spacing.

The four parts 35 and 57 are parallelograms, and the sides 3B
form an angle W6o@ with respect to the longitudinal center @YK of each rib 34, I4. In a typical example, the recess 35.57 has a length of 111 (2L4tll steel), a width of 11 irises (1z7) and a depth of 1
It is 1 kettle (1175111 kyo). Each two adjacent [! The distance between the centers IIx and X of Is is 21 m (5 (Llsmm)).

Figures 1gl and 4 show the disks S2 and 52m positioned lI* for mating.

Disc s2 ribs! The longitudinal center line Y of the rib i4 of the disc 52m and the longitudinal center #Y of the rib i4 of the disc 52m and the longitudinal center #Y of the rib i4 to be avoided are positioned at an angle (intersecting relationship) with each other.

FIG. 5 shows a cross section of one rib 34 and one reverse rib S4m of the disk 12m. FIG. 6 is a cross-sectional view showing the disks s2.52m, 52b fitted together.

ribs 54.56.54b on disk 52 and I2;
54b extends in the direction yC substantially perpendicular to the plane of the drawing, and the rib S 4 a 566a of the disk M2m has a length of 11cjt in the left-right direction of the drawing. Reverse rib 54f of disk 52) (!IIIs7'L, W4 contact disk 4 disk 3
2m rib 34af)l! ll & 55m, the reverse lip S 4 of the disk 52m, the concave llA37 m of the a is the adjacent disk 52. It fits into the recess Ask of the rib 54b of b. These matings maintain each disk in alignment and reduce the center-to-center distance of each two abutting disks to S
-1m (19,05 groove purchase) K shortened.

Referring to FIGS. 4 and 7, the mating of the adjacent disks creates chordal channels 40° 42 that cross each other between the disks. Wastewater flows through these channels. It is on the water-exposed surfaces of channels 40, 42 that microorganisms such as slime gradually grow.As mentioned above, the unique configuration of the contact medium 60 of the present invention, i. Rib s4.54m, 5 of contacting disk 52, S2 &...
6.56 &... have a larger water 11M surface than was previously possible, and therefore the channels 40, which are not blocked by waste materials accumulating on the scissors.
42. The interlocking ribs and reverse lips provide a surface morphology that enhances the transfer of acid bulk from the atmosphere to the wastewater.

FIG. 8 shows another embodiment of the contact medium WO#) of the present invention. In this embodiment, the disks 52, 12m, . . . are divided into semicircular halves, and the pipes 46 are inserted through these disks.

The pipe 46 can be detachably fixed to the frame of the water shark device, thereby holding the disks in a fitted state with each other and preventing them from turning over each other.

FIG. 9 shows yet another embodiment of the invention. This 411I
In A@, the semicircular half of FIG. 8 is further divided into five fan-shaped sections 72, 75, 74 of the same cedar, which are connected by a web 7S. Each section is provided with at least one, preferably five, pipe receiving holes 80. The diameter of these holes is approximately 21 m (5rL8*st), and the edges are rounded by vacuum forming to avoid high stress. To further increase the strength of one disk, the rib centerline of each sector is configured to extend in a different direction from the rib centerlines of other adjacent sectors.

Although the present invention has been described above in connection with the embodiments, the present invention has the structure and form of the embodiments shown here. It will be apparent to those skilled in the art that various embodiments are possible and various changes and modifications can be made without departing from the spirit and scope of the invention.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a wastewater treatment device with a number of mutually mated disks, Figure 2 is an enlarged cross-sectional view of two mated discs, and Figure @5 is a cross-sectional view of two unmated II
& Fig. 4 is a schematic diagram of a plurality of fitted discs, Fig. 5 is a sectional view of one disc taken along 6ts-s in Fig. 2, and Fig. 6 is an exploded perspective view of the discs in contact with each other. A cross-sectional view of a plurality of disks taken along line -6 in Fig. 2, a perspective view of a partial cross section taken along line 1i7-7 in Fig. 4, and Fig. 7;
Figures 8 and 9 are schematic diagrams of modified discs. S2.52aS52b! Disc 55; Top circle 54; Convex protrusion 35: Concave part S6! Reverse reply 57: I! J ll 4a, 42z channel

Claims (1)

[Claims] 1) A contact medium for removing waste from wastewater, each comprising a plurality of parallel convex ribs and a plurality of parallel reverse ribs arranged alternately with the convex ribs. Both consist of two interdigitated discs, each convex lip having r*m* with a series of equally spaced [!] parts,
Each reverse lip consists of a series of equally spaced 1! ! J portion, the concave portion of each reverse lip of one disk and the concave portion of each convex lip of the other disk are mutually fitted, and the two are mutually #! The combined disks have intersecting chordal channels for the flow of wastewater, and the surfaces of those channels provide a place for the growth of microorganisms and increase the amount of oxygen transferred by v16. A contact medium characterized by: 2) At least S said disks, with a concave portion of each reverse lip of the first disk and a [!
! IIK are fitted together, and the concave portions of each convex lip of the first disk are mutually fitted with the concave portions of each reverse rib of the fifth disk. contact medium. 3) The contact medium of Claim 1, wherein each of the convex ribs and the recessed portion of each escape lip is a parallelogram. 4) The 1ψ contact according to claim 8, item S, wherein each of the four parts of item III has a side that forms an angle of 60° with respect to the longitudinal center line of the respective convex lip and reverse rib. Medium. 5) Inside the tank (supported by a shaft so as to be able to rotate freely, a contact medium for treating wastewater within the tank (with a plurality of parallel convex ribs arranged alternately with the convex ribs) It consists of at least two interdigitated discs having a plurality of parallel reverse ribs, and a drive means for rotating the discs around an axis, each convex lip having an equal distance between FI& a top surface with a series of four sections arranged, each inverted rib having a series of equally spaced recesses on the face of the disk opposite the top surface of the convex rib; , the recesses of each inverted rib of one disk and the recesses of each convex rib of the other disk are interfitted, and the two interfitted disks are rotated as the disk is rotated about an axis. 6) A contact medium characterized in that it forms intersecting chordal channels for the passage of wastewater, and allows the growth of microorganisms on the surface of the channels.6) At least three of the above. a disc, the four parts of each inverted rib of the first disc and the recessed part of each convex rib of the second disc are fitted together, and the recessed part of each convex rib of the first disc is fitted into each part of each convex rib of the third disc. 7) The contact medium according to claim S, wherein the contact medium is configured to be mutually fitted with the four parts of the reverse lip. 7) The contact medium according to claim S, wherein each of the convex ribs and the recessed part of each reverse lip is a parallelogram. The contact medium according to item 5. 8) The contact medium according to claim 7, wherein each of the recesses has a side that forms an angle of approximately 60 degrees with the longitudinal center line of each of the convex ribs and one rib.