JP2595441B2 - Coagulation sedimentation separation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention mainly relates to a cast-in-place pile,
Regarding equipment for clarifying raw water such as underground wall construction, mud shield, sludge water generated by civil engineering work, and other polluted water of industrial wastewater, the purpose of the equipment is to provide an excellent separation function
Coagulation / sedimentation separation equipment that is compact and utilizes the rising space
Is what you do.

[0002]

2. Description of the Related Art Conventionally, as the prior art for clarifying this kind, sludge water, other industrial wastewater, etc. (hereinafter simply referred to as sludge water), for example, the following inventions and devices are scattered. That is, (1) there is a sludge dewatering treatment apparatus disclosed in Japanese Patent Publication No. 61-46163. The gist of the apparatus is that a rotating drum provided at a certain level in a bin and a periphery is a strainer, and a jet is provided on the rotating drum. A suction pipe communicated with the pump is provided, and the rotary drum is configured to peel off and remove the adsorbed sludge on the surface of the filter cloth belt. (2) There is a solid-liquid separation method and apparatus of sludge water disclosed in Japanese Patent Publication No. 61-32078. The gist of the method is to arrange several mixers equipped with branching mixing blades in the middle of piping, A screw conveyor is erected in the solid-liquid separation tank communicating with the chemical tank and the pipe is connected to the screw conveyor, and a scooping auxiliary blade which is in contact with the spiral blade surface of the screw conveyor and rotates with the rotation is arranged. The purpose is to positively generate flocks by the mixer and to surely discharge the flocks separated in the solid-liquid separation tank by the screw conveyor and the lifter blades. (3) There are a sedimentation and separation device of Japanese Patent Publication No. 63-44402 and a solid-liquid separation device of raw water such as sludge water of Japanese Patent Publication No. 2-62282. A container body provided, a coagulation tank mounted on an opening of the container body, and a stock solution supply path or a supernatant discharge pipe communicating with the coagulation tank provided in the container body; And that the coagulation tank is mounted on the container body to achieve miniaturization. (4) There is a sedimentation / separation device described in Japanese Utility Model Publication No. 57-35366, in which a hermetically sealed mixing / aggregation tank is provided at the upper part of a main body container composed of a hollow cone into which the main body container can be combined, and a sludge concentration tank body is provided at a lower part thereof. The upper hollow cone constituting the main body container is provided with an umbrella-shaped separator inclined along the inner wall, and the lower hollow cone is formed in a sedimentation separation chamber. Raw water pipe in coagulation tank,
Further, a clear water discharge pipe is provided in each of the separators. The feature is that the lower part of the main body container is a hollow conical body in which the sludge can flow down. In addition, since a cylindrical sludge thickening tank is provided below the hollow cone, sludge can be reliably collected and discharged.

[0003]

The inventions and inventions described above can be expected to have a certain effect.
The following issues are conceivable. First, Tokiko Sho 61-46
In the sludge dewatering treatment device of No. 163, it is considered difficult to quickly treat a large amount of sludge water from the viewpoint of mechanism, and it is necessary to take measures against clogging because a filter cloth belt is used. Therefore, there is a problem in terms of maintenance, maintenance, durability, etc. together with the cleaning. Next, in the method and apparatus for separating solid and liquid sludge water disclosed in Japanese Patent Publication No. 61-32078, a pipe mixer is interposed in the piping to mix the sludge water and the flocculant. Thorough stirring
Mixing is not achieved, and it is necessary to deploy several units as shown in the figure, such as three or four units. Ultimately, the equipment becomes complicated, relatively large, or there is a problem of clogging. It is hard to maintain and manage what happens. Although the solid-liquid separation tank is effective in positively discharging the floc group, there is a problem that the separation of the clarified water and the floc using the specific gravity difference is not necessarily considered to be sufficient. In addition, Tokubo Sho 63
In the sedimentation separation device and the solid-liquid separation device of raw water such as sludge water in Japanese Patent Publication No. 44402 and Japanese Patent Publication No. 2-62282, since the umbrella-shaped separator is not a detachable system, it is difficult to maintain and control the separator. In other words, there is a problem that the target water is not a structure in which the direction of the raw water is freely changed, that is, the target range of the treated raw water is limited. Further, according to the invention of Japanese Utility Model Publication No. 57-35366, since raw water is introduced into a guideway narrower than a raw water pipe, generation of flocs in this guideway cannot be expected, and dirty raw water is immediately introduced into the main body container. Therefore, it is not suitable for efficient solid-liquid separation, particularly for the separation of sludge water which is the object of the present invention. Further, since a large chamber for sedimentation and separation is not formed in the main container, the prolonged processing time is a place where distortion is not caused .

[0004]

SUMMARY OF THE INVENTION In view of the above, the present invention provides
With the aim of reducing the size of the device, freely attaching and detaching the inclined plate, improving the efficiency of separation and facilitating maintenance management, etc.,
The following configuration was adopted.

Namely, coagulating sedimentation separator according to the present invention, astringent bottom, a discharge bottom and open top portion and a small-sized container body comprising includes an upper supernatant water drainage pipe supernatant portion, the container
Coagulated raw water provided in a detour along the outer wall surface of the main unit
A supply pipe, a drainage side of the coagulated raw water supply pipe positioned at an upper surface open portion of the container body, and a granulating device provided at the upper surface open portion connected to the drainage side; and the container body A large number of inclined plates that can be replaced freely inside,
It consists of.

[0006]

Next, the operation of the present invention will be described. The raw water such as sludge water is supplied from a raw water tank (not shown) storing the raw water.
Raw water (conveyed by pump-up, PAC etc.
First, the added raw water) is further stirred and mixed by a line mixer (mixing pipe, stirring device) to be converted into flocs having good sedimentation properties. Then, in the process of transferring the flocculated raw water supply pipe, it is further stirred and mixed,
More sedimentable flocs are produced. Raw water containing the floc having good sedimentation properties (referred to as first treated raw water)
Is then led to a granulator. Since this granulator has a sufficient volume, the first treated raw water sent out from the coagulated raw water supply pipe flows from one wall surface of the granulator to the other wall surface while flowing therefrom. The first treated raw water is further agitated and mixed into a second treated raw water by the wall of the first raw water. Slowly supplied.

[0007] The second treated raw water introduced into the container body is distributed down to the plurality of inclined plates, and in the course of flowing down, the second treated raw water comes into contact with the plurality of inclined plates. The speed is further reduced by the frictional resistance,
Solid-liquid separation is rapidly performed via the frictional resistance while growing into flocs having better sedimentation properties. At that time, the flocks are sequentially settled toward the discharge bottom via the convergence bottom of the container body by their own weight, and are deposited on the discharge bottom. On the other hand, the treated water stays upward from the middle of the container body having a sufficient volume, and is further clarified via sedimentation of its own weight by minute flocs. The supernatant water thus clarified reaches the supernatant portion of the container body. The clarified water that has reached the supernatant section becomes true clarified water, and is discharged to a river or the like via a supernatant water drain pipe provided in the supernatant section, for example, via a neutralization tank. In addition, a part of the sludge and the raw water treated at the bottom of the discharge pass through a sludge storage tank or a filter press. The treated raw water filtered by the filter press is thereafter returned to the raw water tank. Further, the sludge is discarded after the coagulation treatment (after forming a cake).

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a small box-shaped container body having a supernatant (main body) 111, a convergence bottom 112 and a discharge bottom 113. A large number of inclined plates 2... (Hereinafter simply referred to as 2) reaching the supernatant portion 111 from the upper surface open portion 114 of the container body 1 are supported so as to be replaceable (detachable ). I have. In the illustrated example, the side plates 211 and 212 supported from the upper surface opening 114 and the side plates 211 and 21
2 and a plurality of inclined plates 2 inserted into the locking portions 213 and 214 provided respectively. Each inclined plate 2 is provided in the locking portions 213 and 214 so as to be replaceable . In addition, as shown in the figure, the opposite side (left side in FIG. 4) of the inclined surface of the convergence bottom portion 112 is shorter, and the opposite side (right side in FIG. 4) is sequentially longer. Has become. In addition, the mounting method of the inclined plate 2 is not limited to the example of the illustration and the description, and any method may be used as long as it is detachably mounted on the supernatant part 111. Also inclined plate 2
The direction of the length, the direction of inclination, the direction of inclination, and the like are not limited to the examples shown in the drawings and the description, and are free. In the figure, reference numeral 115 denotes a supernatant water drainage pipe provided at a substantially central portion of the supernatant portion 111, and reference numeral 116 denotes a discharge bottom portion 113.
The sludge discharge pipes installed in each are shown. In some cases, the vibration means 117 may be provided on the outer surface of the converging bottom 112.

3 is one of the outer wall surfaces 1 of the container body 1.
A raw water supply pipe constituting a flocculation / stirring mechanism provided in a detour along the surface of a, and the raw water introduction side of the raw water supply pipe 3 (the raw water introduction side to which the flocculation aid is added or mixed) However, the present invention is not limited to this.), A line mixer 4 is provided, and mixing in the pipe is performed via the line mixer 4. As a result, flocks having good sedimentation properties are generated. A drain 311 is attached to the raw coagulated water supply pipe 3.

Numeral 5 is a grain-growing device (device for quickly generating flocs having good sedimentation properties) constituting a flocculation / stirring mechanism connected to the drainage side of the flocculated raw water supply pipe 3. Is mounted on the container body 1 so as to be located above the inclined plate 2. This grain-growing device 5 has a tubular shape,
It has a slit 511 on the front side. Slit 51
1. The flow in the horizontal direction is straight, but may be inclined in either direction, or
The number of slits 511 and the like are appropriately changed as needed. The first treated raw water that has flowed from one wall surface 512 to the other wall surface 513 of the grain-growing device 5 collides with the other wall surface 513 and then returns and is newly introduced. After being mixed with 1 treated raw water and further stirred and mixed to become a second treated raw water, the raw water is successively flowed down toward the inclined plate 2 through the slit 511.

In FIG. 1, reference numeral 6 denotes an outer wall surface 1a of the container body 1.
Further, a ramp 7 provided slightly below the upper surface opening is a frame for supporting the container body 1.

Further, as shown in FIG. 6, a coagulation / sedimentation / separation apparatus of the present invention may be provided. In this case, the coagulation / sedimentation / separation apparatuses (the second coagulation / sedimentation apparatus) are connected to each other.
And a third coagulation / sedimentation / separation apparatus. ) Shows an example of a coagulation sedimentation separation system for supplying raw water (not limited). That is, in this case, the coagulation tank device (not shown) and the container main body 1 of each coagulation / sedimentation / separation device are communicated via the pipe 8 and the branch pipe 8a. Further, the supernatant water of each coagulation / sedimentation / separation apparatus is treated in the same manner as in the previous example via piping (not shown) and branch piping. The coagulation / stirring mechanism is constituted by the coagulation tank, the pipe 8 and the branch pipe 8a. Needless to say, there may be a case where a grain-growing device 5 is additionally provided to each of the coagulation-sedimentation-separation devices. By assembling the above configuration and each member and device,
A variety of coagulation sedimentation separation systems and equipment are designed and selectable, depending on each site or situation. Therefore,
It is a practical and versatile coagulation sedimentation separation system or apparatus.

[0013]

As described in detail above, the present invention is freely replaceable with a small container body having a convergence bottom, a discharge bottom, and an open top, and a supernatant water drainage pipe. A large number of inclined plates are provided and the outside of the container body is provided.
Coagulated raw water supply pipe provided in a detour along the wall surface,
A structure for supporting a grain-growing device connected to this coagulated raw water supply pipe
Therefore, the following effects are obtained.

(1) The present invention relates to a method for manufacturing a container body on an outer wall surface.
Along the way, a coagulated raw water supply pipe is provided
A configuration was adopted in which a grain-growing device was mounted on the top opening of the container body.
Therefore, downsizing of the entire device and space saving are achieved.
You.

(2) Further, according to the present invention, the inclined plate can be freely attached and detached from the upper opening portion of the container body toward the supernatant portion, so that the inclined plate can be freely replaced.
It has practical effects such as easy maintenance and management .

(3) According to the present invention, the degree of pollution of raw water can be changed by changing the gap between the inclined plates through the freedom of replacement of the inclined plates.
In addition, the flow rate of the raw water can be freely adjusted, and more efficient and precise sedimentation and separation can be achieved.

(4) The size of the grain-growing device is reduced, and the size of the device is further reduced, and a floc having better sedimentation is generated through the return effect of the grain-growing device.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a container body.

FIG. 2 is a side view of the coagulation / sedimentation / separation apparatus.

FIG. 3 is a plan view of a coagulation / sedimentation / separation apparatus.

FIG. 4 is a schematic view showing a relationship between an inclined plate and a container body.

FIG. 5 is an enlarged perspective view of the grain size increasing device.

FIG. 6 shows an example in which the present apparatus is used in a coagulation / sedimentation separation system
FIG.

[Explanation of symbols]

Reference Signs List 1 container main body 1a outer wall surface 111 supernatant part 112 convergence bottom part 113 discharge bottom part 114 top opening part 115 supernatant water drainage pipe 116 sludge discharge pipe 117 vibrating means 2 inclined plate 211 side plate 212 side plate 213 locking part 214 locking part 3 locking raw water Supply pipe 311 Drain 4 Line mixer 5 Granulator 511 Slit 512 One wall 513 The other wall 6 Trap 7 Frame 8 Pipe 8a Branch pipe

Claims (2)

(57) [Claims] 1. A small container body having a converging bottom, a discharge bottom and an upper surface opening, and a supernatant water drainage pipe, and a detour along the outer wall surface of the container main body. Provided
The coagulated raw water supply pipe and the drainage side of the coagulated raw water supply pipe are located at the upper surface open portion of the container body, and are connected to the drainage side.
The top and open part granulating device provided, the large number of inclined plates arranged freely replaced in the container body, in composed coagulating sedimentation separator. 2. The coagulation / sedimentation / separation apparatus according to claim 1, wherein the coagulation raw water supplied through the coagulation raw water supply pipe is showered from a granulation apparatus.