KR101093207B1 - Apparatus for purifying waste water in the manhole - Google Patents

Abstract

PURPOSE: A wastewater treating apparatus in an underground structure is provided to expand the life expectancy of the apparatus and to maximize the efficiency of treatment by eliminating fine sludge based on chemicals. CONSTITUTION: A wastewater treating apparatus in an underground structure includes a wastewater storing bath, a transferring pump(220), filters(500a, 500b), cleaning water tanks(210a, 210b), a cleaning gun(700). The filters filter and separate transferred wastewater into sludge and water. The cleaning water tanks store separated water from the filters. The cleaning gun is in connection with the cleaning water tanks and sprays cleaning water under a high pressure toward an underground structure. The cleaning gun includes a spraying nozzle and a suction inducing pipe.

Description

Underground Structure Wastewater Treatment System {APPARATUS FOR PURIFYING WASTE WATER IN THE MANHOLE}

The present invention relates to an improvement of an underground structure wastewater treatment apparatus that operates while mounted on a vehicle and separates wastewater existing on a sewer pipe such as an underground structure, separated into sludge and water, and purified water reusably.

In general, underground structures such as manholes or sewage pipes of electrical or telecommunication facilities require periodic cleaning management due to corrosion and foreign material inflow.

In order to clean underground structures such as sewage pipes and manholes, a vacuum suction vehicle equipped with a wastewater treatment device is usually used to spray by washing with high pressure water, and the washed sewage is sucked and cleaned together with sludge. .

At this time, the wastewater treatment apparatus mounted on the vacuum suction vehicle is usually a water tank for storing water for high-pressure injection to clean the sludge and dirt; A sludge tank for recovering wastewater containing sludge and dirt; High pressure pump and washing water spraying device for high pressure spraying water in the water tank; It is configured to include a vacuum pump for sucking the waste water containing sludge.

Thus, the water in the water tank is washed by high pressure spraying using a high pressure pump, and the wastewater containing sludge and foreign substances collected by the suction is sucked by the vacuum pump and recovered to the sludge tank, and then filtered through a filter in the sludge tank. The sludge (including foreign matter) and water were separated in a manner, and then the water was discharged and the sludge was collected and treated separately.

However, in the conventional wastewater treatment device having such a structure, since the filter is installed in the sludge tank, when the sludge / foreign material and water are separated, the filter is clogged by fine sludge, resulting in a decrease in efficiency as well as the cost of maintenance. And wasted time.

In addition, since the conventional wastewater treatment apparatus was a method of treating wastewater using only a filter, the treatment water quality was not good.

In addition, a washing gun is used as a washing water spraying device. Since a washing gun has a shape of a simple spray gun having a straight end, foreign matters are scattered together with the washing water at high pressure, thereby making the working environment worse.
To this end, Korean Patent No. 10-0674138 has been presented "water reuse wastewater treatment apparatus of a manhole cleaning vehicle".
This is to allow sludge to be separated from the absorbed sewage in consideration of the problems of the conventional vacuum suction vehicle and to filter the water to be reused as the washing water, thereby increasing the cleaning efficiency by efficient water reuse.
That is, the primary filter is installed inside the sludge tank as a partition wall to filter the large garbage or foreign matter from the sewage sucked through the suction port; A secondary filter for performing secondary filtration at an outlet for discharging sewage passing through the primary filter of the sludge tank; A first pump for pumping sewage in the sludge tank to the outside through the outlet; A filter tank for receiving sewage from the sludge tank by the pump to filter and filter the sludge using a fiber rotary filter; And a second pump pump for filtering sludge from the filter tank and pumping the filtered water to the wash water tank.
However, in this case, there is an advantage in that the filtered wastewater can be used again, but there is a problem in that the treated water quality is not good because it is simply a method of treating wastewater using only a filter.

The present invention was created in view of the above-mentioned problems in the prior art as described above, while efficiently filtering and separating the sludge and foreign substances in the inhaled wastewater to minimize the clogging phenomenon of the filter through the backwash method, chemical stirring By adding a tank, it has a sludge flocculation structure through a flocculant, so that it can process fine sludge perfectly, while improving the quality of the treated water. Its main purpose is to provide an underground structure wastewater treatment system that also improves the working environment by allowing them to be inhaled.

The present invention is a means for achieving the above object,
A wastewater storage tank for suctioning and storing the wastewater existing in the underground structure by vacuuming the inside with a vacuum pump; A transfer pump for transferring wastewater stored in the wastewater storage tank; A filter for filtering and separating the wastewater transferred to the transfer pump into sludge and water; At least one washing water tank provided around the waste water storage tank and storing water separated from the filter; A washing gun connected to the washing water tank and spraying the washing water high pressure around the underground structure; Inside the waste water storage tank is further provided with a self-cleaning filter for firstly filtering the sludge while moving up and down according to the level of the waste water;
Between the waste water storage tank and the filter is further provided with a chemical stirring tank which can be stirred while putting a flocculant to agglomerate fine sludge contained in the water filtered in the self-cleaning filter;
Part of the secondary filtered water through the filter is characterized in that the pipe is to be supplied to the wash water tank to be recycled to the wash water.

At this time, the self-cleaning filter is a main body formed of a cylindrical frame, a mesh body attached along the circumference of the main body, a bearing installed in the center of the upper and lower surfaces of the main body, a shaft tube installed to be supported by the bearing, A 'b' shaped injection tube installed close to the mesh and connected to the shaft in the interior, a nozzle formed inclined at a predetermined angle to the injection tube, a guide rod installed inside the wash water storage tank, and the main body is restrained to move up and down along the guide rod. It is also characterized in that it is configured to include a fixed bar and a beret provided on the upper surface of the main body.

In addition, the shaft pipe is characterized in that the return pipe is connected so that a portion of the water transported through the transfer pump is returned, the back pipe is sprayed back to the outside through the injection port.

In addition, the flocculant added to the chemical stirring bath, chitosan (15% by weight), DCDA (Dicyandiamide) 22% by weight, ammonium chloride (Ammonium chloride) 17% by weight (Tridymite), activated carbon (Activated) carbon) is also characterized by a chitosan-based flocculant composed of 27% by weight.

In addition, the filter is provided with a filter tube having a plurality of voids in the center, a plurality of fiber yarn bundles arranged in a form surrounding the filter tube, an air cylinder for rotating and twisting the fiber yarn bundle, It consists of a nozzle pipe that is connected to the inside of the filter pipe and connected to the nozzle, the nozzle pipe is also characterized in that the air compression tank is connected.

And, the washing gun is composed of a spray nozzle connected to the wash water tank, and a suction induction pipe provided in the lower portion of the spray nozzle and extending longer than the spray nozzle and connected to the waste water storage tank; The ends of the spray nozzle and the suction hose are bent downwardly, and the suction nozzle has a characteristic of being installed to suck foreign substances scattered by the negative pressure into the suction guide pipe when the washing water is sprayed at a high pressure through the spray nozzle.

According to the present invention, clogging of the filter due to fine sludge is eliminated through backwashing, fine sludge can be removed through chemical treatment, and thus the treated water quality is improved, so that it can be recycled as washing water, and rapid treatment is possible. In addition, by spraying the washing water through the cleaning gun and suction can remove the scattering debris at the same time, the work efficiency is maximized, the working environment is improved, and the life of the equipment can be extended.

Figure 1 is a schematic block diagram showing a treatment process of the underground structure wastewater treatment apparatus according to the present invention.
Figure 2 is a detailed view of the wastewater storage tank and self-cleaning filter installed in the underground structure wastewater treatment apparatus according to the present invention.
Figure 3 is an illustration of a filter constituting the underground structure wastewater treatment apparatus according to the present invention.
Figure 4 is an illustration of a washing gun constituting the underground structure wastewater treatment apparatus according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

The underground structure wastewater treatment apparatus according to the present invention is a device mounted on a vehicle and configured to process wastewater quickly while moving, and as shown in FIG. 1, a wastewater storage tank to suck and store wastewater such as the underground structure 100 ( 200).

At this time, at least one, preferably two washing water tanks 210a and 210b are installed at both sides of the wastewater storage tank 200.
In addition, the waste water storage tank 200 is provided with a vacuum pump 230, the vacuum pump 230 is to suck the waste water, such as the underground structure 100 through the waste water suction hose 240 to the inside.

Thus, when the vacuum pump 230 is driven to generate a negative pressure while the inside of the wastewater storage tank 200 is vacuumed, the wastewater is sucked through the wastewater suction hose 240, and the sucked wastewater is stored in the wastewater storage tank 200. Will be saved.
The vacuum pump 230 is suitable to use when the amount of waste water is large.

In this case, the waste water contains various foreign substances including sludge.

Therefore, a self cleaning strainer 300 is embedded in the wastewater storage tank 200 to separate the sludge and various foreign matters contained in the wastewater.

In addition, the self-cleaning filter 300 is connected to the transfer pump 220 for transferring the filtered water through a pipe.

Here, as shown in FIGS. 1 and 2, the self-cleaning filter 300 has a form in which a mesh 320 is attached to a main body 310 formed in a cylindrical frame along a circumference.

In addition, bearings 330a and 330b are fixed to upper and lower surfaces of the self-cleaning filter 300 and a rotatable shaft tube 340 is installed under the support of the bearings 330a and 330b.

In addition, a part of the shaft pipe 340 is connected to the injection pipe 350 extending in a substantially 'b' shape, the injection pipe 350 is formed with a plurality of injection holes 360, wherein the injection hole 360 Is formed to be inclined at a predetermined angle, is installed in the main body 310 is disposed close to the inner surface of the mesh 320.

Therefore, when water is supplied through the shaft tube 340 and then sprayed with high pressure to the injection hole 360, the water stream is inclined and hits the mesh 320 while the mesh 320 is about to rotate in the oblique direction, and eventually the bearing 330a. As the supported body 310 is rotated, the backwashing function is performed over the entire network 320.

That is, fine sludge adhered to the mesh 320 by the high pressure sprayed from the inside to the outside is dropped off, thereby preventing clogging, thereby ensuring a more excellent treatment efficiency, and the treatment water quality. Will also be improved.

At this time, the water supplied to the shaft pipe 340 for backwashing is drawn by the return pipe 222 at the rear end of the transfer pump 220 which will be described later by connecting to the shaft pipe 340 by the discharge pressure of the transfer pump 220 Some branched water is configured to back-spread by back spraying from the inside of the mesh 320 to the outside through the shaft pipe 340, the injection pipe 350, and the injection hole 360 through the return pipe 222.

Then, the water filtered through the self-cleaning filter 300 is discharged through the discharge port 370, and is transferred to the transfer pump 220 through the pipe.

Further, the self-cleaning filter 300 can be moved up and down in accordance with the water level inside the waste water storage tank 200 to further increase the treatment efficiency, and further reduce the effect of sludge deposited on the bottom side, for this purpose The guide rod 202 is vertically installed in the storage tank 200, and the fixing bar 380 fastened to the guide rod 202 is fitted into the guide rod 202 in a ring shape to bind the guide rod 202. At the top, a bure 390 is installed.

Therefore, when the water level increases, the main body 310 rises along the guide rod 202 because the bub 390 floats. When the water level decreases, the main body 310 also sinks. That descends.

On the other hand, the water passed through the transfer pump 220 is transferred to the chemical stirrer 400 by the pumping of the transfer pump 220.

The chemical stirrer 400 is for agglomeration of fine sludge that has passed even the self-self filter 300, and cohesive agents may be introduced through the chemical injector 410 installed at the upper portion of the chemical stirrer 400. It is configured to be.

In addition, the chemical stirrer 400 includes a stirring fan 420 rotated by a power source such as a motor.

In this case, the flocculant is chitosan-based, by weight% chitosan (15%), DCDA (Dicyandiamide) 22%, ammonium chloride (17%), Tridymite (19%), activated carbon (Activated carbon) 27 It is formulated in%.

Here, since the chitosan has an amino group, since it has a cation in an aqueous solution, it is combined with an anion and aggregates. In the present invention, but using as a flocculant during wastewater treatment using this principle, it is limited to the above range to prevent over-agglomeration.

In addition, the DCDA (Dicyandiamide) is a dimer of dicyandiamide, which is a dimer of cyanamide, and is mainly used as a fire extinguisher powder because nitrogen is generated during combustion. In particular, since the curability and adhesion is strong, it is preferable to be limited to the above range in consideration of the combination with other components.

In addition, the ammonium chloride is excellent in the flocculation reaction in the form of an emulsion, but must be used in the present invention, since it contains chlorine, and thus adversely affects accumulation, the ammonium chloride is limited to the above range.

In addition, the phospholipid is a kind of crystal chamber silica, which has good hygroscopicity, but should be limited to the above range because it causes silicosis when used in excess.

In addition, the activated carbon is preferably limited to the above range in consideration of agitation by increasing aeration force during stirring.

As such, the flocculant according to the present invention performs the flocculation process quickly while stirring, and usually finishes the flocculation panel within 1 minute. This time contributes to shortening the treatment time and is advantageous in transporting and storing because it is in powder form.

When completely agglomerated to the fine sludge through the drug stirring tank 400 is sent to the filter (500a, 500b) that can be adjusted in the aggregated state.

The filters 500a and 500b completely filter out the aggregates by the aggregation reaction.

Accordingly, the filtered aggregate is transferred to the collection tank 600, the filtered water is supplied to the washing water tank (210a, 210b) described above to be recycled to the washing water.

In this case, it does not necessarily need to be recycled, and some may be recycled to wash water so that they are discharged, and in some cases, all may be discharged.

In particular, the filter (500a, 500b) is preferably used to enable the air gap control by using a twist filter (Twist Filter) twisted around the perforated tube bundle, in some cases the air compression tank 510 In a state provided with a separate nozzle (not shown) in the filter (500a, 500b) may be installed to be backwashed.

That is, as shown in FIG. 3, the fiber yarn bundle 530, which is a filter material, is disposed on the outer edge of the filter tube 520, and the fiber yarn bundle 530 is fixed with a rotating mechanism such as the air cylinder 550. When twisted by rotating at an angle, the fiber bundle 530 wraps around the outer surface of the filter tube 520, so that the air gap formed in the filter tube 520 becomes smaller. In other words, the air gap can be adjusted.

After filtering in this state and supplying compressed air or washing water to the nozzle through the nozzle tube 540 to backwash, the strong air or washing water is removed from the inside of the filter tube 520 by releasing and loosening the fiber bundle 530. When sprayed to a rapid and efficient backwash is possible to extend the life of the filter tube 520 and increase the filtration efficiency.

In addition, a washing gun 700 is installed on the hose drawn out from the washing water tanks 210a and 210b, and the washing gun 700 is bent so that the end of the spray nozzle 710 is inclined downward as shown in FIG. 4. It is formed, the lower portion is inclined downward while protruding slightly more than the tip of the injection nozzle 710 has a structure in which the suction induction pipe 720 connected to the waste water storage tank 200 and the suction hose is installed in parallel.

Accordingly, when the washing water is sprayed through the washing gun 700, waste water and the like that are scattered around the spraying part are scattered, and at the same time, the tip of the suction induction pipe 720 is formed by the negative pressure generated by the washing gun 700. In the suction force is generated so that some waste water eventually scattered into the suction induction pipe 720 is stored in the waste water storage tank 200 connected to the cleaning gun 700 and the suction hose.

Through this, the foreign matter / waste water and the like scattered at the same time as the washing water spray can be removed by suction to the waste water storage tank 200, so the working environment becomes even better.

As described above, the present invention provides an advantage that wastewater treatment efficiency is improved, rapid treatment is possible, and the treated water is excellent in recycling treated water as washing water.

100: underground structure 200: wastewater storage tank
300: self-cleaning filter 400: chemical stirring
500a, 500b: filter 600: collection tank
700: washing gun

Claims (6)

A wastewater storage tank 200 for vacuuming the wastewater present in the underground structure 100 by a vacuum pump 230 and storing the suction water through negative pressure;
A transfer pump 220 for transferring wastewater stored in the wastewater storage tank 200;
A filter (500a, 500b) for separating the wastewater transferred to the transfer pump 220 by sludge and water;
At least one or more washing water tanks 210a and 210b disposed around the wastewater storage tank 200 to store water separated from the filters 500a and 500b;
A washing gun 700 connected to the washing water tanks 210a and 210b for high-pressure spraying the washing water around the underground structure 100;
The washing gun 700 is provided with a spray nozzle 710 connected to the washing water tanks 210a and 210b, and is provided at a lower portion of the spray nozzle 710 and extends longer than the spray nozzle 710 and the waste water storage tank 200. ) And a suction induction pipe 720 connected to the suction hose;
Inside the waste water storage tank 200 is further provided with a self-cleaning filter (300) for firstly filtering the sludge while moving up and down according to the level of waste water;
Between the waste water storage tank 200 and the filter (500a, 500b) is a chemical stirring tank 400 that can be stirred while putting a flocculant to agglomerate fine sludge contained in the water filtered in the self-cleaning filter 300 More installed;
Some of the secondary filtered water through the filter (500a, 500b) is supplied to the wash water tank (210a, 210b) to be piped to be recycled to the wash water;
The self-cleaning filter 300,
A main body 310 formed of a cylindrical frame, a net body 320 attached along the circumference of the main body 310, bearings 330a and 330b provided at the center of the upper and lower surfaces of the main body 310, and a bearing ( Shaft pipe 340 is installed to be rotated by the support of the 330a, 330b, 'b' shaped injection pipe 350 is installed close to the mesh body 320 in the body 310 and connected to the shaft pipe 340, and the injection pipe The injection hole 360 inclined at a predetermined angle to the 350, the guide rod 202 installed upright inside the wash water storage tank 200, and the main body 310 is fixed to rest up and down along the guide rod 202 Underground structure wastewater treatment apparatus comprising a bar (380), and a bure (390) installed on the top surface of the main body (310).
delete The method according to claim 1;
The shaft pipe 340 is connected to the return pipe 222 so that a portion of the water transported through the transfer pump 220 is returned, the back pipe sprayed to the outside from the inside of the mesh 320 through the injection hole 360 Underground structure wastewater treatment apparatus, characterized in that configured to.
The method according to claim 1;
The flocculant added to the chemical stirring tank 400,
15% by weight of chitosan, 22% by weight of DADA (Dicyandiamide), 17% by weight of ammonium chloride, 19% by weight of tridymite, 27% by weight of activated carbon Underground structure wastewater treatment apparatus, characterized in that the flocculant.
The method according to claim 1;
The filter (500a, 500b) is installed in the center and the filter tube 520 having a plurality of voids, a plurality of fiber yarn bundle 530 disposed in a form surrounding the filter tube 520, and the fiber yarn bundle An air cylinder 550 for rotating and twisting the 530 and a nozzle tube 540 piped into the filter tube 520 and connected to a nozzle are included in the nozzle tube 540. An air compression tank 510 is provided in the nozzle tube 540. Underground structure wastewater treatment apparatus, characterized in that the connection.
The method according to claim 1;
Ends of the injection nozzle 710 and the suction induction pipe 720 are bent downwardly inclined, and the waste water scattered by the negative pressure when the washing water is sprayed at high pressure through the injection nozzle 710 opens the suction induction pipe 720. Underground structure wastewater treatment apparatus, characterized in that installed to suck into the wastewater storage tank 200 through the suction hose connected to the washing gun (700) through.

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