JPH07194906A - Filter for waste water containing solid component such as cement slurry - Google Patents

Abstract

PURPOSE:To prevent the deterioration of the filtration function of a filter by clogging by a method in which water to be treated in an amount exceeding the filtration capacity is stored in a bag filter, an agitated state is created by the composition of ejectors, and the water is passed for backwashing by a submerged pump. CONSTITUTION:Water to be treated in an amount exceeding the filtration capacity of a bag filter 13 is stored in the filter 13 to prevent the solidification of cement components on the side wall of the filter 13. Since a water suction pipe line 17 connected with a water supply pipe line 15 forms an ejector at its branching parts 15a, 17a, the filtrate is stored in a filtrate tank 14 while an agitated state being kept in the bag filter 13 to be fed back around a submerged pump 12 in a treatment tank 11. When the water reaches a specified level in the bag filter, the submerged pump 12 is stopped so that the water flows back to backwash the pump 12, returning into the treatment tank 11. In this way, the submerged pump 12 can be backwashed, and the solidification of cement components is prevented around the pump 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for filtering wastewater containing a solidifying component such as cement slurry, and more particularly, to a cement system produced during the production of cement products such as cement roof tiles and cement blocks. The present invention relates to a filthy water filtering device that separates cement and oil components from sewage containing slurry, and that has solidifying components such as the cement, oil component, and cement-based slurry that enables reuse of water.

[0002]

2. Description of the Related Art Conventionally, as a method for treating sewage containing cement-based slurry produced when producing a cement product,
Usually, "A sewage tank consisting of multiple sedimentation tanks and neutralization tanks is provided,
The sewage is settled in the settling tank, a solid material having a large specific gravity such as cement is settled due to the difference in specific gravity thereof, and an oil component having a small specific gravity is overflowed into the next settling tank, and this operation is repeated, in the neutralization tank, A method of adding a neutralizing agent such as hydrochloric acid to neutralize the sewage separated from the cement "is adopted.

In this system, a plurality of settling tanks are used, the cement and oil / water can be separated by utilizing the difference in specific gravities, and a large structure can be obtained. It has an advantage that a large amount of wastewater can be treated.

[0004]

However, the above-mentioned conventional method has the following problems. That is, a wide space is required to install a plurality of precipitation tanks and neutralization tanks. Since the cement-based slurry contains a coagulant, the cement component precipitated at the bottom of the settling tank becomes stuck to the settling tank, and it takes time to remove the cement component. I need to break it. Although the separated liquid is chemically neutralized, it substantially contains a large amount of alkali content, which causes rough hands and skin due to the alkali of the worker, and there is a difficulty in its workability. Since the processing system is open type, there is a possibility that the separated liquid will leak to the outside and cause environmental damage. There are issues such as.

By the way, in the above-mentioned conventional method, in order to easily remove the cement component precipitated in the settling tank, it is conceivable to use a bag filter or other filter cloth and remove the cement component with the filter cloth. But,
When using this kind of bag filter or other filter cloth,
Since the cement component is adhered and solidified on the filter cloth, its filtering function is deteriorated and continuous operation cannot be performed.

The present invention has been made in view of the above-mentioned problems, and its object is to prevent clogging of the filter to prevent deterioration of the filtering function, and to prevent oil components, water, etc. An object of the present invention is to provide a filthy water filtering device containing a cement-based slurry in which the separated components of 1.

[0007]

Means for Solving the Problems And, as a means for achieving the above-mentioned object, a filthy water filtering device containing a cement-based slurry of the present invention is a device for treating water containing a solidifying component such as a cement-based slurry. A treatment tank for accumulating, a submersible pump installed at the bottom of the treatment tank for pumping the water to be treated at the bottom of the treatment tank, and the water to be treated pumped by the submersible pump to be filtered to obtain a solid matter and a filtration. A bag filter that separates into a liquid, a treated water supply pipe having a treated water injection nozzle that ejects treated water of the treatment tank onto an upper inner wall surface of the bag filter, and an inflowing treated water inside the bag filter. A water level detection sensor for detecting the water level of the treated water, and a wastewater suction pipe for returning the treated water from the upper part of the bag filter to the wastewater tank via the treated water supply pipeline or directly to the wastewater tank. The bag fitter is filled with sewage up to a set water level or higher, and when the water level is above the set water level, the pumping of sewage water by the submersible pump is stopped, and the water to be treated accumulated in the bag fitter is removed from the bag filter. Is configured to have a control unit that sucks up from above and returns to the treatment tank, and backwashes the submersible pump with the suctioned water to be treated.

[0008] Further, in another aspect of the present invention, there is provided an apparatus for filtering waste water containing cement-based slurry, wherein in the above-mentioned invention, a return pipe for returning the filtrate filtered by the bag filter to the treatment tank and the supernatant liquid in the treatment tank are provided. It is configured to have a supernatant liquid withdrawal conduit. Further, a sewage filtration device containing another cement-based slurry of the present invention, in the above invention,
The sewage jet nozzle of the treated water supply pipe is provided in the upper portion of the bag filter, and the suction port of the treated water suction pipe is provided in the bag filter below the installation position of the treated water jet nozzle. And outside the bag filter,
The treated water supply pipeline and the treated water suction pipeline are connected, and both pipelines form an ejector.

[0009] Furthermore, the filtration device for waste water containing the cement-based slurry according to another aspect of the present invention is, in each of the above-mentioned inventions, a second treatment tank for accumulating the supernatant liquid taken out from the treatment tank in the supernatant liquid taking-out pipe line; The second for installing the water to be treated at the bottom of the second treatment tank installed in the bottom portion of the second treatment tank
A submersible pump, a second bag filter for filtering the water to be treated pumped up by the second submersible pump to separate it into a solid matter and a filtrate, and the water to be treated in the second treatment tank to the second bag filter. A second treated water supply pipe provided with a treated water injection nozzle for injecting to the inner wall surface of the upper part; a second water level detection sensor for detecting the water level of the treated water flowing into the second bag filter; The second treated water suction pipe line for returning the treated water from the upper part of the two-bag filter to the treatment tank via the second treated water supply pipe line or directly to the treatment tank, and the second bag fitter. Add treated water to the set water level,
When the water level becomes equal to or higher than the set water level, the pumping of the treated water by the second submersible pump is stopped, and the treated water accumulated in the second bag fitter is sucked up from the upper portion of the second bag filter to perform the second treatment. A second control unit for returning the second submersible pump to the backwash tank by controlling the backwashing of the second submersible pump with the sucked treated water; and a return conduit for returning the filtrate filtered by the second bag filter to the second wastewater tank. , A second supernatant liquid taking-out pipe line for taking out the supernatant liquid in the second treatment tank, and a third bag filter or an oil / water separating section connected to the second supernatant liquid taking-out pipe line.

Further, in another aspect of the present invention, the wastewater filtering apparatus containing the cement-based slurry of the present invention is configured such that the oil / water separation section is a separation apparatus for separating oil / water by the difference in specific gravity between the oil component and the water content. .

[0011]

The apparatus for filtering sewage containing solidifying components such as cement-based slurry of the present invention operates the submersible pump for the treated water containing the cement-based slurry stored in the treatment tank to supply the treated water supply pipe. Through the treated water injection nozzle to spray on the inner peripheral wall of the bag filter, once the bag filter is filled with the treated water, the cement-based slurry contained in the treated water, the bag fitter Agitating the inside of the treatment tank by filtering the water to be treated with the bag filter while preventing the adherence to the inner wall surface and returning the filtered water to the periphery of the submersible pump in the treatment tank. Then, while the cement-based slurry around the submersible pump is hard to be solidified, the content of the solidifying component such as the cement-based slurry which is a solid component contained in the sewage in the treatment tank is set. It is without.

When the water level of the water to be treated in the bag filter reaches the set water level, the submersible pump stops operating, sucks up the water to be treated accumulated in the bag filter and returns it to the treatment tank. The water level of the water to be treated in the hug filter is set to a set water level, and the submerged pump is backwashed with the water to be treated sucked up to prevent clogging of the submersible pump and other failures. And
The supernatant liquid in the upper part of the treatment tank is taken out and sent to the above-mentioned supernatant liquid or the second, third, ... Treatment tank, the second, third ,. It is filtered with a bag filter, and the oil component is separated from the filtrate obtained by filtration by utilizing the difference in specific gravity.

As described above, the apparatus for filtering sewage containing a solidifying component such as the cement-based slurry of the present invention collects the amount of water to be treated that exceeds the filtration capacity in the bag filter and the ejector in the bag filter. It has a feature in that the filtering device is configured by combining two points, that is, a configuration that agitates depending on the configuration and a point that the water to be treated accumulated in the bag filter is back-flushed to the submersible pump and back-washed. Thus, the water to be treated can be continuously filtered without lowering the filtering performance of the bag filter. In addition, the effect can be further improved by combining the point that the filtered water that has been filtered is fed back to the periphery of the submersible pump in the treatment tank.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are as follows.
1 shows an embodiment of the present invention, FIG. 1 is an overall schematic configuration diagram, and FIG.
Is a detailed configuration diagram of a main part, and FIG. 3 is a plan view showing an arrangement of a water tank.

The filthy water filtering apparatus containing a solidifying component such as the cement-based slurry of this embodiment is used for sewage (drainage) generated during the production of cement products such as cement roof tiles, cement and oil, and fly ash (ash). Is a device for filtering / separating water, and is roughly divided into four separating devices 1, 2, for separating cement from treated water which is sewage.
Separating 3, 5 and oil and fly ash (ash) 1
It consists of five devices, one separating device 5.

The separator 1 comprises a treatment tank 11 for storing wastewater containing cement-based slurry, an underwater pump 12 installed at the bottom of the treatment tank 11, and a bag filter 13 for separating cement from treated water. The bag filter 1
3 and a filtered water tank 14 for storing the water to be treated which has passed through 3. The processing tank 11 is a rectangular water tank in which the bottom is narrowed with respect to the middle portion (upper end), and the submersible pump 12 is installed at the bottom.

The submersible pump 12 is a pump for supplying the treated water (dirt water) in the treatment tank 11 to the bag filter 13, and through the treated water supply pipe 15 connected to the discharge port of the pump. Connected to the bag filter 13. The treated water supply pipe line 15 is provided with a treated water injection nozzle 16 at the tip, and the treated water injection nozzle 16 is arranged above the inside of the bag filter 13. In addition, a treated water suction pipe line (San Phong pipe) 17 is provided in the middle of the treated water supply pipe line 15. The treated water supply pipe line 15 and the treated water suction pipe line 17 have branch portions 15 thereof.
a has an ejector configuration, and the flow of the treated water supplied through the treated water supply pipe 15 causes the branch portion 17a of the treated water suction pipe 17 to have a negative pressure, so that the inside of the bag filter 13 has a negative pressure. The water to be treated is sucked up and circulated to the bag filter 13 through the inside of the water to be treated supply pipe 15, and the inside of the bag filter 13 is constantly kept in a stirring state.

The bag filter 13 is a cloth filter, and has a treated water injection nozzle 16 of the treated water supply pipe 15, a treated water suction port 17b of the treated water suction pipe 17 therein. A water level detection sensor 18 that detects the water level of the water to be treated in the pug filter 13 is provided. The water level detection sensor 18 is usually a float switch, and is provided in the upper and lower parts inside the bag filter 13 in order to detect the upper water level and the lower water level.
Here, the bag filter 13 is installed at a high place with respect to the treatment tank 11, and the treated water suction pipe line 17 is configured to form a siphon pipe.

Below the bag filter 13,
A filtered water tank 14 is installed, and the filtered water tank 14 is the treatment tank 1
The filtered water is connected to the bottom portion of No. 1 through the return pipe 19, and the filtered water is fed back to the periphery of the untreated water inlet of the submersible pump 12 installed in the treatment tank 11. As a result, it is possible to prevent the sludge-like cement-based slurry from accumulating around the treated water suction port of the submersible pump 12. Further, a supernatant liquid take-out pipe line 20 for taking out the supernatant liquid of the treatment tank 11 is provided above the treatment tank 11. The supernatant liquid take-out conduit 20 is connected to the second processing tank 21 of the separation device 2 so that the supernatant liquid can flow into the second processing tank 21.

The separator 2 comprises a second treatment tank 21, an underwater pump 22 installed at the bottom of the second treatment tank 21, and a bag filter 23 for separating cement from the water to be treated.
A filtered water tank 24 for storing the water to be treated that has passed through the bag filter 23, a bag filter 25 for filtering the supernatant liquid, and a second treatment tank 21 for the bag filter 25.
The submersible pump 26 for supplying the supernatant liquid is composed of six parts.

The second processing tank 21 is the processing tank 1 of the separating apparatus 1.
As in the case of 1, the bottom is a rectangular water tank formed in a tapered shape narrowing with respect to the middle portion (upper end portion), and the submersible pump 22 is installed at the bottom portion. The treated water supply pipeline 27 is connected to the discharge port of the submersible pump 22, and the treated water injection nozzle 2 provided at the tip of the treated water supply pipeline 27.
8 is arranged inside the bag filter 23. Further, as in the case of the separation device 1, a suction pipe line 30 having a suction port 29 for sucking the water to be treated in the bag filter 23 is connected in the middle of the treated water supply pipe 27 in an ejector configuration, In the filter 23,
A water level detection sensor 31 that detects the vertical water level is provided.

A filtered water tank 24 is installed below the bag filter 23, and the filtered water tank 24 is the second processing tank 21.
Is connected to a bottom portion of the second treatment tank 21 through a return pipe 32, and filtered water is fed back around the treated water suction port of the submersible pump 22 installed in the second treatment tank 21.
It is configured to remove solid contents such as cement-based slurry from the waste water inside. The upper part of the second processing tank 21 becomes a supernatant liquid, and the supernatant liquid is supplied to the bag filter 25 by the submersible pump 26. Below the bag filter 25, the filtered water tank 3
3 is provided, and the filtered water tank 33 is connected to the separation device 4. Here, the suction port for the supernatant liquid of the submersible pump 26 has a suction portion 34 with a float and is configured to float on the water surface of the second processing tank 21. Also,
The second treatment tank 21 is connected at its upper part to the third treatment tank 35 of the separation device 3, and the upper treated water of the second treatment tank 21 can be supplied to the third treatment tank 35 through the supply pipeline 36. Has been done.

Similar to the separating device 1 and the separating device 2, the separating device 3 has a tapered third processing tank 35 whose bottom is narrowed with respect to the intermediate portion (upper end), An underwater pump 37 is installed at the bottom of the 3 treatment tank 35. A treated water supply conduit 39 is connected to the outlet of the submersible pump 37, and a treated water injection nozzle 40 provided at the tip of the treated water supply conduit 39 is arranged inside the bag filter 41. In addition, the treated water supply pipeline 3
In the middle of 9, a suction pipe line 43 having a suction port 42 for sucking the water to be treated in the bag filter 41,
Connected in ejector configuration, also bag filter 4
A water level detection sensor 44 for detecting the upper and lower water levels is provided in the unit 3. Further, a filtered water tank 45 is provided below the bag filter 41, and the filtered water tank 45 is fed back to the third treatment tank 35 by a return pipe line 46.
Sewage in the third treatment layer 35 is treated.

The third treatment tank 35 is connected to the fourth treatment tank 47 at the upper portion of the water tank, and the supernatant liquid in the third water tank 35 overflows and flows into the fourth water tank 47.
An underwater pump 48 is installed on the inner bottom of the fourth water tank 47, and the underwater pump 48 is connected to the separation device 5.

The separator 5 is connected to the filtered water tank 33 and separates the liquid supplied from the filtered water tank 33 into oil components, fly ash (ash) and water. The separation device 4 is configured to separate by utilizing the difference in specific gravity of oil components, fly ash (ash content), and water, and is composed of a plurality of tanks filled with water, and the tanks have a height of Different partition walls 49 are provided, the oil component with a low specific gravity and ash overflow, and the water is separated into the lower part of the tank,
The separated water is fed back to the second treatment tank 21, and the separated oil component and ash are separated by a filter 50 such as filter paper, and only the oil component is collected in the tank through the filter 50. It is said that.

The separating device 5 is formed by a filter 51 having a wavy shape, and the filtered water tank 5 is provided below the filter 50.
1 is provided and the filtered water tank 52 is stored in the fifth water tank 53. The operation of these submersible pumps is configured to be operated by the control unit A.

The operation of the separating apparatus of this embodiment will be described. First, the submersible pump 12 is operated while the treated water (dirty water) is poured from the outside into the treatment tank 11 of the first separating apparatus 1 and stored. The treated water in the treatment tank 11 is supplied to the bag filter 13 via the treated water supply pipe line 15, and is sprayed from the treated water injection nozzle 16 onto the peripheral surface of the filter 13 to wash the peripheral surface of the filter 13. Meanwhile, the water to be treated is stored in the filter 13. That is, the bag filter 13
By accumulating water to be treated having a capacity higher than that of the filtration treatment, the cement component, which is a solidifying component, is prevented from solidifying on the peripheral wall surface of the bag filter 13. Further, when the treated water is collected above the suction port 17b of the treated water suction pipe 17 in the bag filter 13, the treated water suction pipe 17 connected to the treated water supply pipe 15 becomes Since the branch portions 15a and 17b constitute an ejector (see FIG. 2), the suction port 17b of the treated water suction pipe line 17 is made into a bag filter by the flow of the treated water flowing through the treated water supply pipe line 15. The treated water in 13 is sucked up, the treated water is sucked into the treated water supply pipeline 15, the treated water is filtered while the inside of the bag filter 13 is in a stirring state, and the treated water is provided below the bag filter 13. The filtered water in the filtered water tank 14 is stored in the filtered water tank 14, and the filtered water in the filtered water tank 14 is fed back to the periphery of the submersible pump 12 of the treatment tank 11 via the return pipe 19. Therefore, the sludge-like substance which is a cement component is prevented from adhering to the periphery of the submersible pump 12.

Next, when the water level detection sensor 18 detects that the water to be treated in the bag filter 13 reaches the set water level, the controller A stops the operation of the submersible pump 12. Then, since the untreated water supplied to the untreated water supply pipe line 15 disappears, the untreated water suction pipe line 17 acts as a siphon pipe due to the positional relationship of the untreated water suction pipe line 17, so that the bag filter The treated water in 13 flows back through the treated water suction pipe line 17 and the treated water supply pipe line 15, and the inside of the submersible pump 12 is backwashed to treat the treatment tank 1
Set back to 1. Therefore, the inside of the submersible pump 12 can be cleaned and the cement component can be prevented from solidifying around the submersible pump 12. Further, in the treatment tank 11, the cement component in the water to be treated is removed in order by the filtered water, and the water to be treated above the treated water is made into a supernatant liquid state.

Then, the supernatant liquid of the treatment tank 11 flows into the second treatment tank 21 through the supernatant liquid discharge conduit 20. The water to be treated (supernatant liquid), which is the flow root, is transferred to the submersible pump 22 to the bag filter 2 as in the case of the treatment tank 11.
3 is supplied via the untreated water supply pipe 27, is sprayed onto the upper peripheral wall of the bag filter 23 through the untreated water injection nozzle 28, and is accumulated up to the set water level. Further, during that time, the inside of the bag filter 23 is agitated by the ejector configuration of the treated water supply pipe 27 and the treated water suction pipe 30. Then, when the set water level is reached, the submersible pump 26 is backwashed, as in the case of the treatment tank 11. The filtered water filtered by the bag filter 23 is stored in the filtered water tank 24 and fed back to a position near the submersible pump 22 in the second treatment tank 21 via the return pipe 32.

Since the liquid surface of the second treatment tank 21 is in a supernatant state, the supernatant liquid is sent to the bag filter 25 for filtering the supernatant liquid through the suction port 34 with the float by the operation of the submersible pump 26. Then, it is filtered by the bag filter 25 and flows into the separator 4 through the filtered water tank 33. Then, in the separation device 4, in a water tank (a plurality of water tanks are formed by the partition wall 49) containing water for treatment, the difference in specific gravity is used to separate the oil component / ash and water. The water content is fed back to the second treatment tank 21, and since the oil component and the ash have a low specific gravity, they overflow in the water tank, the ash is absorbed through the filter 50, and only the oil component is taken out. , Can be collected. Ash can be removed by replacing the filter 50.

Further, the water to be treated at the intermediate water level of the second treatment tank 21 flows into the third treatment tank 35 via the treated water supply pipe line 36. Then, the treated water that has flowed into the third treatment tank 3
The submersible pump 37 installed in No. 5 supplies water to the bag filter 41 through the untreated water supply pipe 39. Also in the bag filter 41, as in the case of the treatment tank 11 and the second treatment tank 21, the bag filter 41 has an ejector configuration including the treated water supply pipe 39 and the treated water suction pipe 42. The water to be treated is filtered while being stirred, and the filtered water is stored in the filtered water tank 45 and fed back to the third processing tank 35 via the return pipe 46. The supernatant liquid of the water to be treated that has been treated in the third treatment tank 35 is the fourth treatment tank 4
Inflow by overflowing to 7.

The supernatant liquid that overflows and flows into the fourth treatment tank 47 is formed by being bent in a wavy shape by the submersible pump 48, for example, a cloth filter 5
The filtered water is filtered by 1, and the filtered water is stored as fresh water in the fifth treatment tank 53 through the filtered water tank 52.

As described above, in the case of the filtration apparatus of this embodiment, the waste water containing the cement-based slurry can be continuously separated into the oil component, the fresh water, and the cement.
In the apparatus of this example, no clogging of the bag filter due to cement was observed, continuous operation was possible, and the separated oil component could be recovered as oil with a purity of about 99% and could be reused. , Cement can be reused in a mixer and water can be reused as well. In addition, the water thus obtained does not need to be neutralized by adding hydrochloric acid or the like, so that the worker does not get rough due to alkali.

The present invention is not limited to the above-described embodiments, but includes configurations that can be modified and implemented without changing the gist of the present invention. Incidentally, in the above-mentioned embodiment, the filter device for separating the cement component from the waste water was described, but the present invention is not limited to this, and the treated water containing the solidifying component may be other waste water or the like. It can be processed in the same way.

[0035]

EFFECTS OF THE INVENTION As is clear from the above description, according to the filter device for waste water containing the solidifying component such as the cement-based slurry of the present invention, the water to be treated is sprayed onto the inner wall of the upper portion of the bag filter, , With the bag filter filled with water to be treated, and by the ejector configuration,
When an agitated state is generated in the bag filter, and when the water to be treated reaches a set water level or higher, the submersible pump is back-washed so that the solidifying component such as cement slurry around the submersible pump is hard to be solidified. The content of solidifying components such as cement-based slurry, which is a solid component contained in the sewage in the treatment tank, can be reduced, the clogging of the bag filter can be prevented, and continuous operation becomes possible. Has the effect of improving.

Further, in the apparatus for filtering wastewater containing a solidifying component such as the cement-based slurry of the present invention, the filtered filtered water is returned to the periphery of the submersible pump in the treatment tank, so that the treatment tank in the treatment tank is treated. It has an effect that the solidifying component such as the cement component of water can be reduced and the fixing of the solidifying component such as cement to the treatment tank can be prevented.

Further, according to the filtration device for wastewater containing a solidifying component such as the cement-based slurry of the present invention, after removing the solidifying component such as the cement component from the water to be treated, the difference in specific gravity is utilized to remove the oil. Since it is designed to separate water from the ingredients,
This has the effect of further improving the purity of the separated oil component and the cleanliness of water.

Therefore, according to the present invention, there is provided an apparatus for filtering wastewater containing a solidifying component such as cement slurry which can continuously filter the water to be treated without lowering the filtering performance of the bag filter. It has the effect that it can be provided.

[Brief description of drawings]

FIG. 1 is an overall schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a detailed configuration diagram of a main part of FIG.

FIG. 3 is a plan view showing an arrangement with a water tank.

[Explanation of symbols]

1, 2, 3, 4, 5 ... Separator, 11 ... Treatment tank, 12 ... Submersible pump, 13 ... Bag filter, 14 ... Filtration water tank, 15 ... Treated water Supply pipe, 16 ... Treated water injection nozzle, 17 ... Treated water suction pipe (Sanphon pipe), 15a ... Branch portion, 17a ... Branch portion, 17b ... Treated water Suction port: 18 ... Water level detection sensor, 19 ... Return line, 20 ... Supernatant removal line, 21 ... Second
Treatment tank, 22 ... Submersible pump, 23 ... Bag filter, 24 ... Filtration water tank, 25 ... Bag filter, 26 ... Submersible pump, 27 ... Treated water supply pipeline, 28 ... treated water injection nozzle, 29 ... suction port, 30 ... treated water suction pipe line, 31 ...
Water level detection sensor, 32 ... Return pipe, 33 ... Filtration water tank, 34 ... Suction port with float, 35 ...
Third treatment tank, 36 ... Treated water supply pipeline, 37 ...
Submersible pump, 39 ... Treated water supply pipeline, 40 ...
Treated water injection nozzle, 41 ... Bag filter, 4
2 ... Water to be treated suction pipe, 43 ... Suction port, 44 ... Water level detection sensor, 45 ... Filtered water tank, 46 ... Return pipe, 47 ... Fourth processing tank, 48・
..Submersible pumps, 49 ... Partition walls, 50 ... Filters, 51 ... Filtration water tanks, 52 ... Fifth treatment tanks

Claims (5)

[Claims] 1. A treatment tank for storing water to be treated containing a solidifying component such as cement-based slurry, and a submersible pump installed at the bottom of the treatment tank for pumping the water to be treated at the bottom of the treatment tank. And a bag filter for filtering the water to be treated pumped up by the submersible pump to separate it into a solid and a filtrate, and the water to be treated for injecting the water to be treated in the treatment tank onto the upper inner wall surface of the bag filter. Treated water supply pipe provided with an injection nozzle, a water level detection sensor for detecting the water level of the inflowing treated water in the bag filter, and the treated water supply pipe for treating the treated water from above the bag filter. To the sewage tank via the sewage tank or directly into the sewage tank and sewage up to the set water level or higher in the bag fitter, and when the water level becomes the set water level or higher, the submersible pump A control unit for stopping the pumping of dirty water, sucking up the treated water accumulated in the bag fitter from the upper portion of the bag filter and returning it to the treatment tank, and backwashing the submersible pump with the sucked treated water. A filter for sewage containing a solidifying component such as a cement-based slurry. 2. Solidification of the cement-based slurry or the like according to claim 1, further comprising a return pipe for returning the filtrate filtered by a bag filter to the treatment tank, and a supernatant discharge pipe for taking out the supernatant liquid in the treatment tank. Filtration device for sewage containing sexual components. 3. A sewage jet nozzle of the treated water supply pipe is provided in an upper portion of the bag filter, and a suction port of the treated water suction pipe is located at a position where the treated water jet nozzle is installed in the bag filter. The cementitious cement according to claim 1, wherein the treated water supply pipeline and the treated water suction pipeline are connected to each other outside the bag filter, and both pipelines form an ejector. Filtration device for wastewater containing solidifying components such as slurry. 4. A second treatment tank for accumulating the supernatant liquid taken out from the treatment tank through a supernatant liquid take-out pipe, and a bottom portion of the second treatment tank, which is installed at a bottom portion of the second treatment tank and is to be treated. A second submersible pump for pumping water, a second bag filter for filtering the water to be treated pumped by the second submersible pump to separate into solid matter and filtrate, and water to be treated in the second treatment tank. A second treated water supply pipe provided with a treated water injection nozzle for injecting water into the upper inner peripheral wall surface of the second bag filter, and a second for detecting the water level of the inflowing treated water in the second bag filter A water level detection sensor, a second treated water suction pipe for returning the treated water from the upper part of the second bag filter to the treatment tank via the second treated water supply pipe or directly to the treatment tank; Put the water to be treated in the second bag fitter up to the set water level When the water level becomes equal to or higher than the set water level, the pumping of the treated water by the second submersible pump is stopped, and the treated water accumulated in the second bag fitter is treated by the second
A second control unit that sucks up from the upper part of the bag filter and returns to the second treatment tank, and controls the backwashing of the second submersible pump by the sucked water to be treated, and a filtrate filtered by the second bag filter. A return conduit for returning to the second waste water tank, and a second for taking out the supernatant liquid in the second treatment tank
The solidifying component such as the cement-based slurry according to any one of claims 1 to 3, which has a supernatant liquid removal conduit and a third bag filter or an oil / water separator connected to the second supernatant liquid conduit. Including sewage filtration equipment. 5. The device for filtering sewage containing a solidifying component such as cement-based slurry according to claim 4, wherein the oil / water separation unit is a separation device for separating oil / water by a difference in specific gravity between an oil component and water.