JPH0857469A - Waste solution treatment apparatus - Google Patents

Abstract

PURPOSE: To provide a waste soln. treatment apparatus equipped with a sludge discharge wiper capable of effectively scraping off sludge such as scum (floating matter) in a discharge direction. CONSTITUTION: A sludge discharge wiper 20 comprises a scraping member 21 scraping off sludge such as scum (floating matter) in a discharge direction and the support 22 supporting the scraping member. The scraping member 21 consists of a blade 32 formed into a thin plate shape and the holder 24 holding the blade 23. The support 21 consists of the bracket 31 supporting the scraping member 21, the balance wt. 32 adjusting the wt. of the blade 23 and the support main body 33 supporting the bracket 31 and the balance wt. 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste liquid treatment apparatus,
In particular, the present invention relates to a waste liquid treatment device equipped with a sludge discharge wiper capable of effectively scraping sludge such as scum (float) in the discharge direction.

[0002]

2. Description of the Related Art Conventionally, in order to purify wastewater such as factory wastewater and household wastewater into clean water, a waste liquid treatment device such as a pressure floating type waste liquid treatment device has been used.

By the way, in the above-mentioned conventional waste liquid treatment apparatus, when purifying the waste liquid to clarify the water, for example, it is necessary to discharge sludge such as scum (float) floating on the water surface to the outside.
Although it was done by actively introducing it into the discharge body such as scum discharge body, because there was no means to actively discharge the sludge introduced into the discharge body, the discharge of the sludge was performed by gravity etc. Was left to the natural discharge of.

Further, due to the long moving distance of the sludge and the construction of the scum discharging mechanism, it takes a long time to discharge the sludge, and a part of the sludge solidifies during the discharging to adhere to the inner wall of the discharging body. However, since the fixed sludge further induces solidification and fixing of a part of the sludge being discharged, there is a problem that the discharge efficiency is inferior.

Further, the shape of the discharge body is related to the whole structure, and there is a drawback that sludge easily adheres and has slant angles and blind spots where it easily accumulates. As a result of the above, there is a problem that the wastewater treatment capacity is reduced as a result of drying and solidification, closing the discharge port, and recontaminating the treated water with the backflow due to the overflow of sludge.

For this reason, in the past, since it was necessary to frequently clean the discharge body, there were problems that the facility cost and running cost increased, and that the facility had to be started and stopped.

In order to solve such a problem, the present applicant has improved the mechanism for introducing the mixed solution and the mechanism for discharging scum to improve the efficiency of discharging scum floating on the water surface and the scum discharger. By removing the blockage of the discharge port due to the attachment of scum to the scum and the accumulation, and improving the discharge efficiency of the scum to the outside of the inner cylinder, the wastewater purification capacity is increased. We have proposed a pressurized floating type waste liquid treatment device (Japanese Patent Application No. 5-3473).
No. 25).

According to the present invention, the entire scum is discharged from the surface of the water to the outside to eliminate the need for a skimmer, and
By completely preventing sludge settling, a scraper is not required, the structure is simple, the operation is easy, the equipment cost and running cost are significantly reduced, and the shutdown of the equipment can be reduced as much as possible. I can do it now.

As a result of further research on the above-mentioned pressure-floating type waste liquid treatment apparatus, the present applicant has found that sludge such as scum (float) that has been positively introduced into the discharge body such as the scum discharge body can be efficiently discharged to the outside. The wiper for sludge discharge that was discharged to was investigated.

[0010]

SUMMARY OF THE INVENTION In view of the problems of the prior art, the main object of the present invention is to provide a sludge discharge wiper so that the sludge is positively introduced into a discharge body such as a scum discharge body. By providing a means for actively discharging the sludge to the outside, the sludge is discharged not only by natural discharge such as gravity, but also by forcibly scraping the sludge, the discharge time of the sludge is not only shortened. Not only that, but it also prevents a part of the sludge from solidifying and sticking to the inner wall of the discharge body, thereby eliminating the need to clean the inner wall of the discharge body, and further improving the discharge efficiency and the wastewater purification capacity. It is an object of the present invention to provide a waste liquid treatment apparatus capable of dramatically improving the waste liquid purification action by the synergistic effect of.

[0011]

According to the present invention, such an object is to provide a waste liquid treating apparatus for treating waste liquid to separate sludge such as scum (float) from water, and sludge such as scum. It is achieved by providing a waste liquid treatment apparatus comprising a sludge discharging wiper for scraping off the sludge in the discharging direction.

[0012]

As described above, according to the waste liquid treatment apparatus of the present invention,
In a waste liquid treatment device for treating waste liquid to separate sludge such as scum (float) from water, a sludge discharge wiper for scraping sludge such as scum in the discharge direction is provided. Not only can sludge such as scum be discharged quickly and reliably in the discharge direction of the discharge body such as the scum discharge body, but also accumulation or sticking of sludge in the discharge body can be prevented in advance.

Therefore, it is not necessary to clean the inner wall of the discharge body,
Moreover, it is possible to improve the discharge efficiency and the ability to purify the wastewater, and the synergistic effect of these can dramatically improve the wastewater purification action.

That is, a skimmer is provided above the discharge body such as the scum discharge body, and the sludge discharge wiper of the present invention is provided on a rotating body such as an arm constituting the skimmer.

Since the rotating body is driven and rotated by the driving force of the drive source, the sludge discharging wiper of the present invention also rotates as the rotating body rotates.

Along with the rotation of the sludge discharging wiper, the scraping body constituting the sludge discharging wiper rotates so as to scratch a predetermined height of the inner wall of the discharging body.

By rotating the scraping body, the sludge introduced into the discharging body is scraped in the discharging direction.

Since the scraping body rotates with the rotation of the skimmer while the waste liquid treatment device is operating, sludge is continuously scraped off, and sludge introduced into the discharge body continues. It is scraped off one after another, falls in the discharge direction, and is discharged to the outside through the discharge pipe.

The skimmer is rotated by the driving of the drive source, and the sludge is forcibly scraped and dropped by the wiper for sludge discharge connected to the skimmer, so that the sludge is discharged to the outside through the discharge pipe. It is discharged and sludge is discharged more efficiently.

In this way, the sludge discharge wiper of the present invention can quickly and reliably discharge sludge such as scum in the discharge direction of the discharge body such as the scum discharge body. It is possible to prevent stagnation and sticking from occurring.

As described above, according to the present invention, the sludge discharging wiper is provided in the waste liquid treatment apparatus, so that the sludge is quickly and surely scraped off without causing sludge retention or sticking. The sludge is dropped and discharged toward the discharge direction, and the sludge is surely and quickly discharged to the outside of the waste liquid treatment device.

As a result, the wastewater treatment device can quickly and surely purify the wastewater.

At this time, in the pressure-floating type waste liquid treatment device (Japanese Patent Application No. 5-347325) previously proposed by the applicant, the scum discharger from which the scum is discharged is tapered from the upper side to the lower side. In the thing formed in a shape, since the scum introduced by the shape effect passes through the scum discharge body quickly and surely without adhering, sludge scraping by the wiper for sludge discharge of the present invention and the sludge Dropping and ejection is performed faster, more reliably, and more efficiently.

Therefore, problems such as sludge retention and sticking, which are problems in the conventional waste liquid treatment apparatus, and the efficiency reduction of the waste liquid treatment apparatus due to these, are solved.

That is, according to the waste liquid treatment apparatus provided with the sludge discharge wiper of the present invention, the waste liquid treatment apparatus can discharge the sludge to the outside promptly and reliably without causing problems such as sludge retention and sticking. Will be provided.

[0026]

The present invention will now be described in detail with respect to specific embodiments with reference to the accompanying drawings.

1 to 6 show a first embodiment of a waste liquid treatment apparatus according to the present invention.

The waste liquid treatment apparatus 1 of the present invention comprises a wiper 20 for discharging sludge.

The waste liquid treatment apparatus 1 is an outer cylinder 2 which is a main body formed in a bottomed cylindrical shape, and a hollow cylindrical shape which is provided in the outer cylinder 2 and whose upper and lower parts are opened. An inner cylinder 3 whose upper end is substantially flush with the upper end of the outer cylinder 2 and whose lower end is spaced apart from the bottom surface of the outer cylinder 2 and has a length shorter than the outer cylinder 2; It is provided inside the cylinder 3,
A scum discharge body 4 formed in a hollow taper shape, the upper and lower parts of which are open, the upper part of which is expanded and the lower part of which is narrowed, and a mixed liquid M which is connected to the inner cylinder 3 and is composed of a metal thin tube.
A liquid mixture introducing pipe connected to an inlet 3a formed in the inner cylinder 3 through the outer cylinder 2 at an angle such that the inner cylinder 3 and the scum discharge body 4 make a flow in the rotational direction. 5 and a mixed solution M in which a waste solution is mixed with a drug, air bubbles, or the like is introduced into the inner cylinder 3 through the mixed solution introduction pipe 5, and a scum (float) S floated on the water surface in the inner cylinder 3. Passes through the scum discharge body 4 and is discharged to the outside of the inner cylinder 3 to purify the waste liquid.

A pipe-shaped sludge discharge pipe 6 whose end extends outside the outer cylinder 2 is connected to the lower end of the scum discharge body 4.

Further, in the lower portion of the outer cylinder 2, a pipe-shaped drainage pipe 7 arranged in the lateral direction for discharging water in the lower portion of the outer cylinder 2 and a large-diameter pipe-shaped pipe for manual work are provided. Hand holes 8 are provided respectively, and a lid 8a is fixed to the end portion of the hand holes 8.

Further, at the upper part of the outer cylinder 2, there is provided a discharge box 10 provided with a water level adjusting plate 9 for adjusting the height of the water surface in the outer cylinder 2, and the bottom surface of the discharge box 10 is provided. The discharge pipe 11 is connected to the discharge pipe 11, and a flange 11a is fixed to the end portion of the discharge pipe 11.

Further, a bridge 18 is installed on the upper end of the outer cylinder 2, and the inner cylinder 3 is suspended on the bridge 18, whereby the outer cylinder 2 and the inner cylinder 3 are integrally formed. ing.

The bridge 18 is provided with a skimmer 15 above the scum discharge member 4.

That is, the skimmer 15 has the central shaft 14 arranged in the longitudinal direction so as to be concentric with the center of the inner cylinder 3,
A laterally arranged arm 13 having a central shaft 14 connected to an upper center thereof, and a scum guide 12 on a lower surface of an end portion of the arm 13.
It is composed of and.

The scum guide 12 is arranged in an oblique straight line so that the inner end is located on the outer wall of the scum discharging body 4 and the outer end is located on the inner wall of the inner cylinder 3.

The upper end of the central shaft 14 is connected to the drive shaft 17 of the drive source 16. Drive source 15
Is placed at the center of the bridge 18, and the driving source 15
The scum guide 12 is rotated by driving and rotating the skimmer 15 by the driving force of the above.

Therefore, the skimmer 15 is rotated by the drive of the drive source 16, the scum guide 12 is rotated, and the scum S is forcibly introduced into the scum discharge body 4.

In such a waste liquid treatment apparatus 1, a sludge discharge wiper 20 for scraping sludge such as scum of the present invention in the discharge direction is provided.

That is, the sludge discharging wiper 20 has a scraping body 21 for scraping sludge such as scum (float) in the discharging direction.
And a support 22 that supports the scraping body.

The scraping body 21 is composed of a thin plate-shaped blade 23 for scraping sludge such as scum (float) in the discharging direction, and a holder 24 for sandwiching the blade 23.

Further, the blade 23 is made of an elastic material such as rubber or soft synthetic resin (soft plastic) and is formed in a rectangular thin plate shape.

The holder 24 has a substantially pentagonal thin plate-shaped substrate 25 having one end connected to the support 22 and the other end sandwiching the blade 23, and a rectangular thin plate facing the substrate 25. The blade 23 is sandwiched between a screw 27 and a nut 28, which are fastening materials, and is connected and fixed to the support 22.

Further, the support 22 is the scraping body 2.
1, a bracket 31 for supporting 1, a balance weight 32 for adjusting the load of the blade 23, and the bracket 3
Support body 33 for supporting 1 and balance weight 32
And consisting of

The bracket 31 is formed in the shape of two rectangular thin plates facing each other, which are fixed to the support body 33 by joining means such as welding, and the base plate 25 of the holder 24 is fitted with the collar 34. In this state, the bolt 35 and the nut 36, which are fastening materials, are rotatably sandwiched.

The balance weight 32 is for adjusting the load of the blade 23, is formed in a hollow cylindrical shape having a through hole at its center, and is fitted into the support body 33, It is fixed via a plurality of lock nuts 37, which are fastening members, and two are used in this embodiment.

Further, the support body 33 is made of a metal rod material and is bent and formed in a substantially crank shape. A screw 38 is screwed on the upper end of the support body 33. Is rotatably connected to and fixed to the arm 13, and a balance weight connecting screw 40 is screwed to a lower end of the lock nut 3 at a predetermined length.
7 is screwed.

Next, the operation of the above embodiment will be described.

As described above, according to the pressure-floating type waste liquid treatment device 1 of the above-mentioned embodiment which is one embodiment of the waste liquid treatment device, the waste liquid for treating the waste liquid and separating the scum (float) S and the water. The processing apparatus is provided with the sludge discharge wiper 20 for scraping off the scum S in the discharge direction, whereby the scum S can be discharged quickly and reliably in the discharge direction of the scum discharger 4. In addition, it is possible to prevent the sludge from accumulating or sticking in the scum discharge body 4.

Therefore, it is not necessary to clean the inner wall of the scum discharger 4, and the discharge efficiency of the scum S is improved and the waste water purification capacity is improved. You will be able to improve.

That is, the skimmer 15 is provided above the scum discharging body 4, and the arm 13 constituting the skimmer 15 is provided with the sludge discharging wiper 20 of the present invention.

The arm 13 is driven and rotated by the driving force of a driving source 16 placed at the center of the bridge 18.

In operating the sludge discharging wiper 20 of the present invention, first, the drive source 16 is turned on to drive the drive source 16.

By the driving force of the driving source 16, the arm 1
3 starts driving rotation.

Subsequently, with the driving rotation of the arm 13, the sludge discharging wiper 20 of the present invention also starts to rotate.

At this time, as the arm 13 is driven and rotated,
The support 22 rotatably connected to the arm 13 also starts to rotate.

Subsequently, the scraping body 21 rotatably connected to the supporting body 22 rotates so as to scratch a predetermined height of the inner wall of the discharging body 4.

The scraping body 21 is rotatably provided on a bracket 31 fixed to a support body 33 constituting the support body 22, and a balance weight fixed to the support body 33 with a lock nut 37. A weight of 32 is loaded.

Further, due to the load of the balance weight 32, a load is applied to the holder 24 and the blade 23 which are rotatably provided on the support body 33 via the bracket 31, and the blade 23 is attached to the inner wall of the scum discharger 4. Stick to.

Therefore, as the arm 13 is driven and rotated, the blade 23 is rotationally moved along the inner wall of the scum discharger 4 in a state of being in close contact with the inner wall of the scum discharger 4.

Further, as the blade 23 rotates along the inner wall of the scum discharger 4, the scum S introduced into the scum discharger 4 is continuously scraped off.

Subsequently, the scum S scraped off by the blade 23 falls toward the sludge discharge pipe 6 and is continuously discharged to the outside of the pressure floating type waste liquid treatment apparatus 1 via the sludge discharge pipe 6. To be done.

As described above, since the scraping body 21 rotates with the rotation of the skimmer 15 while the waste liquid treatment apparatus 1 is operating, the scum S is continuously scraped and the scum discharging body 4 is scraped. The scum S introduced into the inside is continuously scraped off one after another, continuously falls in the discharge direction, and is discharged to the outside of the pressure floating type waste liquid treatment device 1 through the sludge pipe 6.

In this way, the sludge discharge wiper 20 of the present invention provided on the arm 13 constituting the skimmer 15 moves the scum S toward the sludge discharge pipe 6 which is the discharge direction of the scum discharger 4. The scrape can be quickly and surely scraped and discharged to the outside of the pressure floating type waste liquid treatment apparatus 1, whereby the accumulation and sticking of the scum S in the scum discharger 4 can be prevented in advance. .

As described above, since the scum S is discharged quickly and reliably, the wastewater can be purified quickly and reliably. Therefore, the wastewater can be efficiently purified by quickly and surely separating the scum (float) S and the moisture (treated water) and discharging the scum S to the outside of the inner cylinder 3. become.

At this time, in the pressure floating type waste liquid treatment device (Japanese Patent Application No. 5-347325) previously proposed by the present applicant, the scum discharger 4 from which the scum S is discharged is reduced in diameter from above to below. In the case of the taper-shaped one, the scum S introduced by the shape effect passes through the scum discharger quickly and surely without adhering, so that the sludge is wiped off by the sludge discharge wiper 20 of the present invention. And the drop discharge of the sludge is performed more quickly, reliably, and more efficiently.

Therefore, problems such as the accumulation and sticking of sludge, which are problems in the conventional waste liquid treatment apparatus, and the efficiency reduction of the waste liquid treatment apparatus due to these, are solved.

According to the waste liquid treatment apparatus provided with the sludge discharge wiper of the present invention, there is provided a waste liquid treatment apparatus capable of discharging sludge to the outside promptly and reliably without causing problems such as sludge retention and sticking. You can do it.

Incidentally, the waste liquid treatment apparatus of the present invention is not limited to the above-mentioned embodiments, and many modifications can be considered.

That is, for example, the sludge discharging wiper of the present invention is not limited to the one including the scraping body 21 of the above-described embodiment and the supporting body 22 that supports the scraping body, but other wipers may be used. Configuration can be added,
For example, in order to make it easier to scrape off the scum S, a washer for spraying water can be provided on the inner wall of the scum discharger 4.

Further, the sludge discharging wiper of the present invention is not limited to the one provided in the above-described embodiment, but a plurality of wipers can be provided by changing the height, and the scum S is scraped off. The effect can be further improved.

Further, the scraping body and the supporting body which compose the sludge discharging wiper of the present invention are not limited to the shapes of the above-mentioned embodiments, but can be formed in different shapes from the above-mentioned embodiments. Is.

For example, the shape of the blade forming the scraping body is longer than that of the blade of the above-described embodiment, or the shape of the holder forming the scraping body is different from that of the holder of the above-mentioned embodiment. It can be formed in a U-shape.

Further, the shape of the bracket constituting the support is made larger than that of the bracket of the above-mentioned embodiment, or the shape of the balance weight constituting the support is different from that of the balance weight of the above-mentioned embodiment. Other shapes can be used.

Further, the support body constituting the support body is not limited to the one formed by bending the metal round bar like the support body of the above-mentioned embodiment, and can be formed of a square bar or a plate material. The same effect as in the above embodiment can be produced.

Further, the connection between the support and the balance weight and the connection with the rotating body such as the arm are not limited to those by the lock nut 37 and the nut 39 of the above-mentioned embodiment, and a pin or other fastening member may be used. Of course it's good.

Further, the sludge discharging wiper of the present invention is not limited to the pressure floating type waste liquid treatment device of the above-mentioned embodiment, but can be widely applied to general waste liquid treatment devices, and produces the same effect as that of the above-mentioned embodiment. Can be made.

[0078]

As described above, according to the waste liquid treatment apparatus of the present invention, in a waste liquid treatment apparatus for treating waste liquid to separate sludge such as scum (float) from water, the sludge such as scum is discharged. By including a sludge discharge wiper that scrapes in the direction, not only can sludge such as scum be discharged quickly and reliably in the discharge direction of the discharge body such as scum discharge body, but also the discharge body It is possible to prevent the accumulation and sticking of sludge from occurring.

Therefore, it is not necessary to clean the inner wall of the discharge body,
Moreover, the discharge efficiency is improved and the waste water purification capacity is improved, and the synergistic effect of these effects has the effect of dramatically improving the waste liquid purification action.

That is, (1) there is an advantage that the sludge such as scum introduced into the inside of the discharge body such as the scum discharge body is continuously and promptly and surely scraped off by the operation of the wiper for discharging the sludge. (2) Since sludge such as scum is continuously scraped off, there is an advantage that the sludge drops in the discharge direction and is continuously and quickly discharged to the outside of the waste liquid treatment device. (3) The sludge such as scum is continuously scraped by the operation of the wiper for discharging sludge, thereby preventing the accumulation or sticking of sludge such as scum in the discharge body such as scum discharge body. There are advantages. (4) The sludge such as scum is continuously scraped off by the operation of the wiper for discharging sludge, so that it becomes quicker and more reliable to introduce the sludge such as scum to the discharger such as the scum discharger. There is an advantage that it can be performed smoothly and continuously. (5) There is an advantage that the sludge such as scum is continuously scraped off by the operation of the wiper for discharging sludge, so that the waste water can be quickly and surely purified. (6) By operating the sludge discharge wiper, sludge such as scum is continuously scraped off and discharged to the outside of the waste liquid treatment apparatus, so that the waste liquid can be efficiently purified. (7) When applied to the pressure floating type waste liquid treatment device previously proposed by the applicant (Japanese Patent Application No. 5-347325), the scum discharge body from which scum is discharged has a diameter reduced from above to below. In the case of the taper-shaped one, the scum S introduced by the shape effect passes through the scum discharge body quickly and surely without adhering, so that the sludge is wiped off by the wiper for sludge discharge of the present invention. Sludge is dropped and discharged more quickly, reliably, and more efficiently. (8) Problems such as sludge retention and sticking, which are problems in the conventional waste liquid treatment device, and efficiency reduction of the waste liquid treatment device due to these are solved.

[Brief description of drawings]

FIG. 1 is a sectional front view of essential parts showing a first embodiment of a sludge discharging wiper of a waste liquid treatment apparatus according to the present invention.

FIG. 2 is a plan view of the device.

FIG. 3 is a side view of the same device.

4 is a sectional view taken along the line IV-IV in FIG.

FIG. 5 is a sectional front view showing a first embodiment of a waste liquid treatment apparatus equipped with a sludge discharge wiper according to the present invention.

FIG. 6 is a partially cutaway plan view of the same device.

[Explanation of symbols]

 1 Waste Liquid Treatment Device 2 Outer Cylinder 3 Inner Cylinder 3a Inlet 4 Scum Discharger 5 Mixed Liquid Introducing Pipe 6 Mud Pipe 6a Flange 7 Drainage Pipe 8 Handhole 8a Lid 9 Water Level Adjusting Plate 10 Discharging Chamber 11 Discharging Pipe 11a Flange 12 Scum Guide 13 Arm 14 Center shaft 15 Skimmer 16 Drive source 17 Drive shaft 18 Bridge 20 Sludge discharge wiper 21 Scraper 22 Support 23 Blade 24 Holder 25 Base plate 26 Suppression plate 27 Screw 28 Nut 31 Bracket 32 Balance weight 33 Support body 34 Color 35 bolts 36 nuts 37 lock nuts 38 screws 39 nuts 40 screws M mixed liquid S scum (floating object)

Claims (10)

[Claims] 1. A waste liquid treatment apparatus for treating waste liquid to separate sludge such as scum (float) from water, comprising a sludge discharge wiper for scraping sludge such as scum in the discharge direction. A waste liquid treatment device. 2. The sludge discharge wiper comprises a scraper for scraping sludge such as scum (float) in the discharge direction and a support for supporting the scraper. The waste liquid treatment device according to 1. 3. The scraping body comprises a thin plate blade for scraping sludge such as scum (float) in the discharge direction, and a holder for sandwiching the blade. Item 2. The waste liquid treatment device according to item 2. 4. The waste liquid treatment apparatus according to claim 3, wherein the blade is made of an elastic material such as rubber. 5. The holder is composed of two plate materials that hold the blade with a fastening material such as a screw and are connected to the support body with a fastening material such as a bolt and a nut. Item 5. The waste liquid treatment device according to item 3. 6. The support body includes a bracket that supports the scraping body, a balance weight that adjusts a load of the blade, and a support body that supports the bracket and the balance weight. Claim 2 characterized by
The waste liquid treatment device described. 7. The bracket attaches the scraping member to a bolt.
The waste liquid treatment apparatus according to claim 6, wherein the waste liquid treatment apparatus is composed of two plate materials that are connected to each other by a fastening material such as a nut and fixed to the support body by a joining means such as welding. 8. The waste liquid according to claim 6, wherein the balance weight is formed into a cylindrical shape that is inserted into the support body and fixed through a fastening member such as a nut. Processing equipment. 9. The support main body has an upper end connected to a rotating body such as a rotating arm, and a lower end provided with a screw for connecting a balance weight.
The waste liquid treatment device described. 10. The waste liquid treatment device is a pressure floating type waste liquid treatment device for purifying the waste liquid by discharging scum (floating material) floating on the water surface to the outside. Waste liquid treatment equipment.