KR102379522B1 - Concomitant comprehensive disposal apparatus with improved concomitant separation performance - Google Patents

Abstract

The present invention relates to a comprehensive treatment device for impurities used to separate and treat impurities from wastewater generated in a sewage treatment plant, a manure treatment plant, etc. The comprehensive treatment device comprises: a rotary screen which separates wastewater into impurities and effluent; a screw press which is connected to the rotary screen to compress and dewater the impurities discharged from the rotary screen; a filtrate tank which is connected to the rotary screen and the screw press to store the effluent discharged from the rotary screen and the screw press; a cyclone which is connected to the filtrate tank and separates sand and seeds from the effluent supplied from the filtrate tank; a centrifugal separator which is connected to the cyclone to centrifugally separate and dehydrate the sand and seeds discharged from the cyclone; and a microfilter which is connected to the cyclone to separate fine impurities from the effluent discharged from the cyclone. The microfilter comprises: a filter drum in a tubular shape opened in front and rear directions and including an inlet through which the effluent discharged from the cyclone flows into an inside thereof and a plurality of filter holes for filtering fine impurities from the effluent introduced into the inside through the inlet and allowing a filtrate to be discharged to the outside; a back pressure plate installed at a rear end of the filter drum and having a fine impurity outlet penetrated back and forth; a plunger installed at a front of the filter drum to be able to advance and retreat into the filter drum and pressurizing the fine impurities inside the filter drum toward the back pressure plate to dehydrate and discharge the same during the forward movement; and a driving part connected to the plunger and moving the plunger forward and backward.

Description

Concomitant comprehensive disposal apparatus with improved concomitant separation performance}

The present invention relates to a contaminant comprehensive treatment device used to separate and treat contaminants from wastewater generated in sewage treatment plants, excreta treatment plants, etc. It relates to a contaminant comprehensive treatment device to improve the contaminant separation performance by making it possible.

As a technology related to the comprehensive contaminant treatment device, the Republic of Korea Patent Publication No. 10-1142929 'Comprehensive contaminant treatment apparatus including a wedge-type bar screen for treating fine contaminants' (hereinafter referred to as 'prior art 1') has been proposed. .

The prior art 1 is "a first treatment unit that separates contaminants of 6 mm or more from the waste water supplied from the waste water supply pipe with a rotary screen and dehydrates them with a screw press; The waste water discharged from the first treatment unit is supplied with a pump and is included in the waste water. A horizontal cyclone-type second treatment unit that separates sand with heavy specific gravity of 6 mm or less from sludge wastewater and floating wastewater; In a known general contaminant treatment apparatus comprising: a third treatment unit including a discharge conveyor for discharging; A fourth treatment unit is further installed for treating , installed to be supported by a pair of support frames facing to one side of the inner side of the treatment tank, and rakes are fixedly installed in the chain at regular intervals to move them in close contact with the screen, and the fine particles discharged by the rakes to the upper and lower sides of the screen It is a technology related to "a comprehensive contaminant treatment device including a wedge-type bar screen for fine contaminants treatment, characterized in that a screw press for extruding and discharging contaminants is installed."

The prior art 1 is provided with a wedge-type bar screen for separating and discharging fine contaminants of 6 mm or less, so that contaminants contained in wastewater are sequentially treated according to the type, but contaminants can be treated without straining the device. are doing

However, the wedge-type bar screen of the prior art 1 has disadvantages in that it takes a lot of time to separate and discharge microcontaminants and is bulky.

On the other hand, as another technology related to the comprehensive treatment of contaminants, a 'multi-stage screen device for treatment of manure, livestock wastewater and sewage' (hereinafter referred to as 'prior art 2') of Republic of Korea Patent Publication No. 10-0928559 has been proposed.

The prior art 2 includes "a screen means for dehydration for removing contaminants, a screen housing installed so that the screen means is inserted therein to be rotatably supported, and a driving mechanism provided outside the screen housing to rotate the screen means. Including, a drain duct of the filtrate is formed on the lower side of the screen housing, and an input pipe is penetrated through the central portion of the rear side of the screen housing to be inserted into the screen device. It consists of a first screen installed at the inner center to perform primary removal of impurities, and a second screen installed outside the first screen to perform secondary removal of impurities, wherein the first and second screens are , A cylindrical dewatering screen installed between the front wall and the rear wall, a contaminant transfer screw installed along the inner circumferential surface of the dewatering screen, and a contaminant discharge cap installed in connection with the opening of the front wall, A discharge port of contaminants is formed on the front side of each of the discharge cap and the screen housing, the input pipe penetrates the central portion of the rear side of the screen housing and is inserted and installed into the first screen, and the dewatering screen of the second screen has a cylinder A long hole-shaped dewatering slit is formed over the entire body of the shape, and a spray nozzle for spraying washing water toward the dewatering screen of the second screen or a cleaning brush in close contact with the dewatering screen of the second screen is installed at the inner upper end of the screen housing, The washing brush is a technology related to "multi-stage screen device for manure and livestock wastewater and sewage treatment, characterized in that it becomes a roller brush that rotates in engagement with the dewatering screen of the second screen."

In the prior art 2, by arranging the first screen and the second screen for removing impurities of different sizes in a concentric circle shape inside the screen housing, sequential and individual dehydration treatment according to the particle size of the contaminants is possible with only one screen device, and there is.

However, the multi-stage screen structure of Prior Art 2 has disadvantages in that it takes a lot of time to separate and discharge fine contaminants, and clogging of the screen by contaminants may occur.

On the other hand, as another technology related to the contaminant comprehensive treatment apparatus, 'a contaminant treatment machine with improved dewatering performance of contaminants' (hereinafter referred to as 'prior art 3') of Republic of Korea Patent Publication No. 10-1495906 has been proposed.

The prior art 3 includes an inlet chute having an inlet through which waste liquid is introduced from the outside at an upper side on one side, and the waste liquid introduced into the inlet chute through the inlet through the rotary filtration cylinder having a filtration gap on the main surface A rotary screen in which large contaminants are filtered and discharged from the opposite side of the contact surface, and the filtrate passing through the filtration gap is allowed to fall downward while in contact with the outer circumferential surface of 5 mm or more or 6 mm or more; the lower part of the rotary screen A storage tank installed in the rotary screen to temporarily store the filtrate of the rotary screen; A low-speed cyclone that receives the filtrate from the storage tank, discharges the sand component to the lower portion, and discharges the filtrate to the upper portion; The storage tank A transfer pump for pumping the filtrate stored in the low-speed cyclone to the low-speed cyclone; A wedge bar drum filter that receives the filtrate of the low-speed cyclone and filters fine contaminants with a wedge bar filter having a wedge-shaped longitudinal section; The rotary screen and the low-speed cyclone A screw press in which the filter materials discharged from the wedge bar drum filter are all introduced into a porous cylinder having a space that is gradually reduced by having a rotating spiral blade therein, and is pressed and dehydrated while passing through the space; the screw press A conveying tank installed at the lower part to temporarily store the desorbed liquid of the screw press and a conveying pump which conveys the desorbed liquid stored therein to the rotary screen; a conveyor that receives the dewatering contaminants discharged from the screw press and carries them out; and the wedge It is a technology related to "a contaminant treatment device comprising a hopper that collects the liquid components discharged from the bar drum filter and discharges them to the outside through the treated water outlet."

The prior art 3 is provided with a wedge bar drum filter to separate and discharge fine contaminants, but such a wedge bar drum filter takes a lot of time to separate and discharge the fine contaminants, and the gap between the drum is blocked by the contaminants. There is a downside to being

[Document 1] Republic of Korea Patent Publication No. 10-1142929 (registered on April 27, 2012) [Document 2] Republic of Korea Patent Publication No. 10-0928559 (registered on November 18, 2009) [Document 3] Republic of Korea Patent Publication No. 10-1495906 (Registered on February 16, 2015)

The present invention has been devised to solve the above problems, and improves the contaminant separation performance by making it possible to more smoothly and quickly separate microcontaminants from the desorbent separated and discharged from the cyclone, and also for the separation of microcontaminants. An object of the present invention is to provide a contaminant comprehensive treatment device in which the configuration is miniaturized.

The problems to be solved by the present invention are not limited to the aforementioned problems. Other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description.

In order to solve the above problems, a contaminant comprehensive treatment apparatus with improved contaminant separation performance according to an embodiment of the present invention includes: a rotary screen for separating wastewater into contaminants and desorbent; a screw press connected to the rotary screen to squeeze and dehydrate the impurities discharged from the rotary screen; a filtrate tank connected to the rotary screen and the screw press to store the leaching solution discharged from the rotary screen and the screw press; a cyclone connected to the filtrate tank to separate sand and seeds from the talismant supplied from the filtrate tank; a centrifuge connected to the cyclone to dehydrate by centrifuging the sand and seeds discharged from the cyclone; and a microfilter that is connected to the cyclone to separate microcontaminants from the desorbed liquid discharged from the cyclone; including, wherein the microfilter is formed in a cylindrical shape that is opened back and forth, and the desorbed liquid discharged from the cyclone is introduced into the inside a filtration drum having an inlet and a plurality of filtering holes for filtering micro-contaminants from the desorbed liquid introduced into the interior through the inlet and allowing the filtrate to be discharged to the outside; a back pressure plate installed at the rear end of the filtration drum and having a micro contaminant outlet penetrating back and forth; a plunger installed in front of the filtering drum so as to be able to move forward and backward into the filtering drum and pressurize the fine contaminants inside the filtering drum toward the back pressure plate to dehydrate and discharge the press; and a driving unit connected to the plunger to move the plunger forward and backward.

In an embodiment of the present invention, the filtering drum is configured by arranging a plurality of bar-shaped unit members extending along the longitudinal direction thereof in a cylindrical shape, and by arranging each unit member at equal intervals, each unit member The filter holes are respectively formed between them.

In an embodiment of the present invention, the microfilter further comprises a fine contaminant discharge pipe connected to the rear end of the filtration drum to transport the micro contaminants discharged through the back pressure plate to the screw press, wherein the micro contaminant discharge pipe is the filtration It is installed to extend upward from the rear end of the drum.

In an embodiment of the present invention, the microcontaminant discharge pipe is formed in a form in which the cross-sectional area becomes narrower toward the upper side.

In an embodiment of the present invention, a plurality of scrapers arranged along the outer peripheral surface of the plunger and inserted into each of the filter holes are formed on the plunger.

In an embodiment of the present invention, each scraper has a fin shape, and an end of each scraper facing the back pressure plate is inclined toward the back pressure plate from the inside to the outside of each scraper.

In an embodiment of the present invention, the plunger is formed with a pressing portion protruding into the micro-contaminant outlet of the back pressure plate during its forward operation.

The comprehensive contaminant treatment apparatus according to an embodiment of the present invention compresses and dehydrates and discharges micro contaminants inside the filtration drum by the plunger of the micro filter reciprocating to and from the filtration drum, thereby more smoothly removing micro contaminants from the desorbed liquid separated and discharged from the cyclone. and can be quickly separated, improving the contaminant separation performance, and at the same time, there is an effect that the configuration for the separation of micro contaminants can be miniaturized.

1 is a front configuration diagram of a contaminant comprehensive treatment apparatus according to an embodiment of the present invention.
Figure 2 is a plan configuration view of the contaminant comprehensive treatment apparatus according to an embodiment of the present invention.
3 is a cross-sectional configuration diagram of a microfilter in the contaminant comprehensive treatment apparatus according to an embodiment of the present invention.
Figure 4 is a cross-sectional configuration diagram showing a state in which the plunger is advanced in Figure 3;
Figure 5 is a perspective view of the filtering drum in the contaminant comprehensive treatment apparatus according to an embodiment of the present invention.
6 is a cross-sectional view of a unit member constituting a filtering drum in the contaminant comprehensive treatment apparatus according to an embodiment of the present invention.
7 is a cross-sectional configuration diagram showing another embodiment of the microfilter in the contaminant comprehensive treatment apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, components shown in the drawings may be exaggerated, omitted, or schematically represented.

Figure 1 is a front configuration diagram of a contaminant comprehensive treatment apparatus according to an embodiment of the present invention, Figure 2 is a plan view of the contaminant comprehensive treatment apparatus according to an embodiment of the present invention.

As shown in Figures 1 and 2, the comprehensive contaminant treatment apparatus according to an embodiment of the present invention is largely a rotary screen 100, a screw press 200, a filtrate tank 300, a cyclone 400, a centrifuge ( 500) and a microfilter (600).

The rotary screen 100 dehydrates wastewater generated in a sewage treatment plant, a manure treatment plant, and the like, and separates the wastewater into contaminants and desorbents.

The rotary screen 100 is a screen body 110 in which the gap formed between each metal disk or metal ring provides a space for draining the liquid by interposing a gap maintaining mechanism between a plurality of metal disks or metal rings. And, at the rear of the screen body 110, it is made to include an auxiliary separator 120 that rotates in engagement with the screen body 110.

The screen body 110 is rotated by being connected to the screen driving motor 130 by a chain, and the auxiliary separator 120 is connected to the screen body 110 by a chain to rotate together.

The rotary screen 100 forms the screen body 110 in the process that wastewater injected through the inlet of the casing 140 comes into contact with the screen body 110 and passes to the opposite side according to the rotation of the screen body 110 . Contaminants and eliminators smaller than the gap formed between each metal disc or metal ring pass through the gap and flow into the filtrate tank 300 provided at the bottom, and contaminants larger than the gap are the outer circumferential surface of the screen body 110 . It is introduced into the screw press 200 by being attached to the opposite side and descending.

The screw press 200 is connected to the rotary screen 100 to dehydrate the contaminants discharged from the rotary screen 100 by pressing.

The screw press 200 has a structure in which a screw 220 is installed inside the outer cylinder 210 having a water discharge hole, and the contaminants discharged from the rotary screen 100 and introduced into the outer cylinder 210 are removed. By the rotation of the screw 220, it is transferred and compressed to the tip to be dehydrated.

The filtrate tank 300 is connected to the rotary screen 100 and the screw press 200 to store the stripped solution discharged from the rotary screen 100 and the screw press 200 .

The filtrate tank 300 is installed adjacent to the screw press 200 at the lower side of the rotary screen 100 .

The cyclone 400 is connected to the filtrate tank 300 to separate sand and seeds from the desorbent supplied from the filtrate tank 300 .

That is, small contaminants including sand and seeds having relatively large particles are separated from the desorbent supplied from the filtrate tank 300 to the lower portion of the cyclone 400 and discharged, and the filtrate is discharged to the upper portion of the cyclone 400 . Relatively small particles and liquid are separated from the desorbent supplied from the tank 300 and discharged.

At this time, a pump 700 is installed in the pipe connecting the filtrate tank 300 and the cyclone 400 so that the desorbed liquid stored in the filtrate tank 300 can be transferred to the cyclone 400 .

The centrifuge 500 is connected to the cyclone 400 to dehydrate the sand and seeds discharged from the cyclone 400 by centrifugation.

The centrifugal separator 500 may be composed of a known centrifugal dehydrator that dehydrates sludge using centrifugal force.

The desorbed liquid separated in the centrifuge 500 is discharged to the outside through a separate treated water discharge path, and the dehydrated sand and seeds are discharged to the outside through the conveyor 800 installed at the lower side of the centrifuge 500 .

Hereinafter, the microfilter 600 will be described in detail with further reference to FIGS. 3 to 6 .

Figure 3 is a cross-sectional configuration diagram of a microfilter in the contaminant comprehensive treatment apparatus according to an embodiment of the present invention, Figure 4 is a cross-sectional configuration diagram showing the advanced state of the plunger in Figure 3, Figure 5 is an embodiment of the present invention It is a perspective view of the filtering drum in the integrated contaminant treatment apparatus by , and FIG. 6 is a cross-sectional view of the unit member constituting the filtering drum in the contaminant treatment apparatus according to an embodiment of the present invention.

3 to 6, the microfilter 600 is connected to the cyclone 400 to separate microcontaminants from the desorbed liquid discharged from the cyclone 400. and an inlet 611 for allowing the desorbed liquid discharged from the cyclone 400 to flow into the inside, and a plurality of filtering microcontaminants from the desorbed liquid introduced into the inside through the inlet 611 and allowing the filtrate to be discharged to the outside a filter drum 610 having a filter hole 612 of; a back pressure plate 620 installed at the rear end of the filtering drum 610 and having a micro contaminant outlet 621 penetrated back and forth; It is installed in front of the filtering drum 610 so as to move forward and backward into the filter drum 610, and presses the micro-contaminants inside the filtering drum 610 toward the back pressure plate 620 during the forward operation to dehydrate and discharge the press. to the plunger 630; a driving unit 640 connected to the plunger 630 to move the plunger 630 forward and backward; and a fine contaminant discharge pipe 650 connected to the rear end of the filtering drum 610 and transporting the fine contaminants discharged through the back pressure plate 620 to the screw press 200 .

5 and 6, the filtering drum 610 is configured by arranging a plurality of bar-shaped unit members 613 extending along the longitudinal direction thereof in a cylindrical shape. At this time, the respective unit members 613 are arranged to be spaced apart from each other at equal intervals, so that the filtering holes 612 are respectively formed between the unit members 613 . Accordingly, the filtering holes 612 are arranged in a plurality along the outer circumferential surface of the filtering drum 610 and each has a slit shape extending along the longitudinal direction of the filtering drum 610 .

In addition, each of the unit members 613 has a trapezoidal cross-section, and the long side of the two mutually parallel sides is disposed to form the inner circumferential surface of the filtering drum 610 . According to this structure, the filter hole 612 has a structure in which the width increases from the inside to the outside of the filtering drum 610, so that the filtering hole 612 is blocked by the micro contaminants inside the filtering drum 610. phenomenon can be prevented.

1, the upper side of the filtering drum 610 is a hopper for temporarily accommodating the desorbed liquid discharged from the cyclone 400 and then supplying it to the inside of the filtering drum 610 through the inlet 611 A shaped water tank 900 may be installed.

3 and 4, the plunger 630 has a cylindrical shape with a closed front. As shown in FIG. 4, the plunger 630 presses the micro-contaminants inside the filtering drum 610 by a forward operation to dehydrate and discharge the pressurized, while the outer circumferential surface of the plunger 630 blocks the inlet 611. It is desirable to have a length that is as long as possible.

The driving unit 640 is made of a hydraulic cylinder and is installed to be disposed inside the plunger 630 . At this time, the driving unit 640 is stably installed, and the plunger 630 is stably moved forward and backward so that the front of the filtering drum 610 has a housing 660 surrounding the driving unit 640 and the plunger 630 . This can be installed. The housing 660 is formed to have an inner diameter corresponding to the inner diameter of the filtering drum 610 so that the plunger 630 can smoothly enter and exit the filtering drum 610 and the inside of the housing 660 .

The micro contaminant discharge pipe 650 is installed to extend upwardly from the rear end of the filtering drum 610 . According to this, the moisture contained in the micro contaminants transferred to the upper part of the micro contaminant discharge pipe 650 sinks to the lower part of the micro contaminant discharge pipe 650, so that the moisture content of the micro contaminants discharged through the micro contaminant discharge pipe 650 can be further reduced.

In addition, the micro contaminant discharge pipe 650 may be formed in a form in which the cross-sectional area becomes narrower toward the upper side. According to this, as the microcontaminants are transported to the upper part of the microcontaminants discharge pipe 650, the more compressed they are, the more the moisture content of the microcontaminants can be reduced.

The integrated contaminant treatment apparatus according to the embodiment of the present invention configured as described above, the plunger 630 of the microfilter 600 reciprocates the filter drum 610, thereby removing the micro contaminants inside the filtering drum 610. By pressing and dewatering and discharging, microcontaminants can be more smoothly and quickly separated from the desorbed liquid separated and discharged from the cyclone 400, so that the contaminant separation performance is improved, and the configuration for the separation of microcontaminants can be miniaturized. there is

Hereinafter, another embodiment of the microfilter 600 will be described with further reference to FIG. 7 , but the same reference numerals are given to the same components as in the above-described embodiment, and repeated description thereof will be omitted.

7 is a cross-sectional view showing another embodiment of the microfilter in the contaminant comprehensive treatment apparatus according to an embodiment of the present invention.

As shown in FIG. 7 , according to the microfilter 600 according to another embodiment of the present invention, the plunger 630 has a plurality of scrapers 631 arranged along its outer peripheral surface, and the front center of the plunger 630 . A pressing portion 632 protruding toward the back pressure plate 620 is formed on the .

Each scraper 631 is installed to be inserted into each filter hole 612 of the filtering drum 610, respectively. Accordingly, each scraper 631 reciprocates along each filter hole 612 when the plunger 630 moves forward and backward, thereby removing micro-contaminants caught in each filter hole 612 .

At this time, each scraper 631 is formed in a fin shape, and the end of each scraper 631 facing the back pressure plate 620 is a back pressure plate 620 from the inside to the outside of each scraper 631 . ) may be inclined to face. According to this, during the forward operation of the plunger 630 , each scraper 631 guides the micro contaminants caught in each of the filter holes 612 to the inside of the filtering drum 610 .

The pressing part 632 is formed to face the micro-contaminant discharge port 621 of the back pressure plate 620 . Accordingly, the pressing unit 632 enters the microcontaminants outlet 621 during the forward operation of the plunger 630 , thereby allowing the microcontaminants to be smoothly discharged through the microcontaminants outlet 621 .

In the foregoing, the present invention has been described with reference to limited embodiments and drawings, but it will be apparent to those skilled in the art that various modifications are possible within the scope of the technical idea of the present invention. Accordingly, the protection scope of the present invention should be defined by the description of the claims and their equivalents.

100: rotary screen 110: screen body
120: auxiliary separator 130: screen drive motor
140: casing 200: screw press
210: outer cylinder 220: screw
300: filtrate tank 400: cyclone
500: centrifuge 600: micro filter
610: filtering drum 611: inlet
612: filter hole 613: unit member
620: back pressure plate 621: fine contaminants outlet
630: plunger 631: scraper
632: pressing unit 640: driving unit
650: micro contaminant discharge pipe 660: housing
700: pump 800: conveyor
900: water tank

Claims (7)

a rotary screen 100 for separating wastewater into contaminants and desorbents;
a screw press (200) connected to the rotary screen (100) to press and dehydrate the impurities discharged from the rotary screen (100);
a filtrate tank 300 connected to the rotary screen 100 and the screw press 200 to store the desorbent liquid discharged from the rotary screen 100 and the screw press 200;
a cyclone 400 that is connected to the filtrate tank 300 and separates sand and seeds from the talismant supplied from the filtrate tank 300;
a centrifuge 500 connected to the cyclone 400 and dewatering by centrifuging the sand and seeds discharged from the cyclone 400; and
A microfilter 600 that is connected to the cyclone 400 and separates microcontaminants from the desorbent discharged from the cyclone 400;
The micro filter 600 is,
It has a cylindrical shape opened back and forth, and an inlet 611 through which the desorbed liquid discharged from the cyclone 400 flows into the inside, and micro-contaminants are filtered from the desorbed liquid introduced into the inside through the inlet 611, and the filtrate a filter drum 610 having a plurality of filter holes 612 to be discharged to the outside;
a back pressure plate 620 installed at the rear end of the filtering drum 610 and having a micro contaminant outlet 621 penetrated back and forth;
It is installed in front of the filtering drum 610 to move forward and backward into the filter drum 610, and presses the micro-contaminants inside the filtering drum 610 toward the back pressure plate 620 during the forward operation to dehydrate and discharge the compression. to the plunger 630; and
and a driving unit 640 connected to the plunger 630 to move the plunger 630 forward and backward.
The filtering drum 610 is configured by arranging a plurality of bar-shaped unit members 613 extending along the longitudinal direction in a cylindrical shape, and by arranging each of the unit members 613 at equal intervals, each The filtering holes 612 are respectively formed between the unit members 613,
The plunger (630) is arranged along the outer peripheral surface of the plurality of scrapers (631) inserted into each of the filter holes (612), characterized in that the formation of a contaminant separation performance is improved comprehensive contaminant treatment apparatus.
According to claim 1,
The microfilter 600 is connected to the rear end of the filtering drum 610 and transports the microcontaminants discharged through the back pressure plate 620 to the screw press 200. A microcontaminant discharge pipe 650 further comprising a ,
The fine contaminant discharge pipe (650) is an integrated contaminant treatment apparatus with improved contaminant separation performance, characterized in that it is installed to extend upward from the rear end of the filtering drum (610).
3. The method of claim 2,
The contaminant discharge pipe 650 is a contaminant comprehensive treatment device with improved contaminant separation performance, characterized in that the cross-sectional area becomes narrower toward the upper side.
According to claim 1,
Each scraper 631 has a fin shape, and the end of each scraper 631 facing the back pressure plate 620 has a back pressure plate 620 from the inside to the outside of each scraper 631. A contaminant comprehensive treatment device with improved contaminant separation performance, characterized in that it is inclined to face.
5. The method according to any one of claims 1 to 4,
Comprehensive contaminant treatment apparatus with improved contaminant separation performance, characterized in that the plunger 630 has a pressing portion 632 that enters the micro contaminant outlet 621 of the back pressure plate 620 during its forward operation to protrude.
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