KR102088362B1 - Adulteration treatment equipment for easy digestion - Google Patents

Abstract

The present invention relates to an adulteration treater contributing to an increase in digestion efficiency, and more specifically, to an adulteration treater for filtering and separating various adulterations and sludge contained in night soil, sewage, livestock excretions, food waste and others to dehydrate and discharge the adulterations and sludge. The adulteration treater according to the present invention, as an adulteration treater interlocked with a rotary screen filtering medium- or larger-sized solids, a cyclone separating filtrate of the rotary screen into a sand component and a liquid component, a screw decanter dehydrating the sand component discharged from the bottom of the cyclone, and a screw press flowing in a filtered material of the rotary screen to dehydrate the filtered material by a screw pressing method, includes: a sprinkling barrel as a central space of the hollow shaft when a screw shaft of the screw press is used as a hollow shaft; a plurality of sprinkling holes formed in the circumferential surface of the sprinkling barrel; a rotary joint provided in an end of the shaft, and spouting water flown in the sprinkling barrel into a cylinder of the lower side of an inlet through the sprinkling holes; and a buoy provided inside the sprinkling barrel to be always maintained in a floated state, and suppressing spouting of water in an upper direction of the inlet. Therefore, the adulteration treater according to the present invention contributes to an increase in the generation amount of biogas and may obtain effects of reducing moisture of discharged sludge and weight of the discharged sludge by increasing quality and amount levels of bio nutrients required in the digestion process of a separated material of the screw press.

Description

[Adulteration treatment equipment for easy digestion]

The present invention relates to a contaminant treatment apparatus for filtering and dewatering various contaminants and sludge contained in manure, sewage, livestock manure, food waste, etc., and is related to environmental machinery.

The present invention is a further improvement of the invention (hereinafter referred to as the background art) filed by Applicant No. 10-2014-0151217 with respect to the "disposal processor having improved dehydration performance of debris".

The background art is a contaminant treatment device that improves dehydration performance by rotating and separating the cross-section control device of a screw press in filtering and dewatering treatments such as manure, sewage, livestock manure, and food waste.

Republic of Korea Registered Patent Publication No. 10-1495906 Republic of Korea Registered Patent Publication No. 10-0848711

Recently, two issues, such as the problem of reducing waste sludge and increasing the production of biogas, have been of interest.

Since the dumping of marine wastes has been banned since 2012 under the London Convention, the final disposal of sludge, mainly consisting of landfill and incineration, involves limited landfill and leachate management issues.Incineration requires auxiliary fuel. In addition, there are problems such as the occurrence of secondary air pollution such as dioxin and fine dust, and the problem of expanding these disposal facilities is also not an easy reality due to social restrictions, and it is the main reason to reduce the amount of waste sludge. The next task to increase the production of biogas is to increase the sludge decomposition and decomposition effect of the digester in order to increase the production of biogas (methane gas) as an energy resource generated from the sludge digester in sewage treatment plants, manure treatment plants, and animal manure treatment plants. The core is the digester, which is the raw material for digestion. This is because the quality of biodegradability of the input sludge is increased and the amount is increased, which is an economically effective task that is achieved only by improving the process efficiency of existing facilities without the construction of new energy facilities.

The above two problems are closely related to the present invention, and the first step is to reduce the discharged sludge, which is also the task to be carried out directly by the above-mentioned sludge treatment, and to increase the biogas production, for example, the sewage treatment plant that occupies the largest share. Since the fine sludge and the desorption liquid desorbed from the contaminant treatment apparatus of the present invention that processes the drawn sludge of the sewage primary sedimentation tank, which is the previous stage, are finally introduced into the digester, the digestion efficiency of the digester and the direct biogas generation effect are qualitative as the organic nutrients of the desorption liquid of the contaminant processor. This is because it is directly related to the quantitative level.

More specifically, the above-mentioned problem is to remove the fine sludge as a solubilized sludge that is rich in organic components and can improve digestion efficiency in a contaminant processor, and to put it into the digester, and also to separate the sludge from the fine sludge. It is a task to achieve water reduction and reduction of waste sludge by improving the dehydration effect.

Defining the terms used in the present invention, 'hybrid' is a solid material that is a target for removal in the treatment of waste liquid, and may be referred to as coarse sludge existing from the initial stage of the treatment process, and 'sludge' is generally a sediment or residue. In the treatment of organic waste liquid, it is mainly an organic solid substance. It is a solid substance having a strong characteristic of aggregates formed by concentration, precipitation, etc. in the process of waste liquid treatment. In the present invention, the two are used without distinction. This is because the debris treatment device is a device that also performs sludge treatment. Therefore, in the present invention, when it is referred to as a contaminant, sludge is also included in the category. Sludge also contains contaminants.

The contaminant processor of the present invention is close to the contaminant processor when applied for pre-treatment purposes such as manure, livestock manure, etc., but when applied to the drawing sludge treatment of the primary sedimentation tank of sewage, it will be more appropriate to call the sludge processor and the sludge processor. Although the term “solid waste handler” would be appropriate for all terms, the Korean product classification table has the product name “hyperdisposal handler”, but there is no official term “sludge processor” or “solid waste processor”. .

The sewage, manure, and livestock manure digesters improve the efficiency of biogas generation and contribute to the increase of biogas generation, and the sludge wastewater treatment system to solve the problems of waste water reduction and sludge reduction takes the following measures.

The contaminant processor contributing to the increase in digestion efficiency of the present invention includes an inflow passage 15 having an inlet 11 through which the waste liquid flows from the outside, and the inflow passage 15 through the inlet 11 ) To the waste liquid flowing into the outer circumferential surface of the rotary filtration cylinder 12 with a filtration clearance formed on the main surface, which is more than 5 to 6 mm, large contaminants are filtered to be discharged from the opposite side of the contact surface, and the filtration clearance The filtrate passing through the rotary screen (Rotary screen) (1) to be dropped downward; A storage tank 14 installed at a lower portion of the rotary screen 1 to temporarily store the filtrate introduced from the rotary screen 1; Cyclone (2), a solid-liquid instantaneous separating function that receives the filtrate from the storage tank 14 through the transfer pump 16, discharges the sand component to its lower part, and discharges the filtrate to its upper part. ); A horizontal screw decanter (3) for receiving sand components discharged to the lower portion of the cyclone (2) and dehydrating it in a centrifugal manner to separately discharge dehydrated sand and desorption liquid; A cylinder 52 having a perforated main surface that is horizontally installed and provides a cylindrical inner space, a shaft 53 rotatably installed inside the cylinder 52, and axially rotated by external power, and the cylinder 52 A screw 54 provided on the shaft 53 for transferring sludge flowing into the cylinder 52 through the inflow chute 51 formed by partially cutting one upper main surface, and on the other side of the shaft 53 It is provided, but comprises a cross-sectional area adjustment tool 55 that generates a compressive force on the passing material by gradually reducing the space cross-sectional area between the shaft 53 and the cylinder 52, and is discharged from the rotary screen 1 By dewatering the filtered material, the desorption liquid is discharged to the dewatering hole 521 formed in the periphery of the cylinder 52, and the dewatered sludge is discharged to the sludge discharge port 57 provided on the other side of the cylinder 52. Screw press (Screw press) (5); And a discharge conveyor 7 for discharging the discharge sand of the screw decanter 3 and the discharge sludge of the screw press 5 to the outside, the filtrate discharged to the upper portion of the cyclone 2 And a debris discharging solution discharged from the screw decanter 3 and the desorption solution of the screw press 5 to be discharged to a subsequent treatment process, wherein the shaft 53 of the screw press 5 is the inlet The entire part located under the chute 51 is a hollow tube shape, and the outer circumference is a sprinkling hole 58 formed with a plurality of sprinkling holes 581 formed thereon, and the sprinkling bottle 58 and the shaft 53 One side of the cross-section is provided with an inlet passage 535 formed to be in communication with each other, passing through the rotary joint 61 provided at the entrance of the inlet passage 535 from the trickle tank 62 through the trickle pump 6 Go through the inlet passage 535 to the above water sprinkler 58 Water admitted is spouted through the sprinkling holes 581 to be sprinkled inside the cylinder 52 under the inlet chute 51, and a buoy 59 is provided in the inner space of the sprinkling container 58. , The buoy 59, when water enters the interior space of the sprinkler (58), the buoyant body (591) and the buoyant body (591) to float in the water over the entire length of the sprinkler (58) It is provided to include a sub-bridge 592 formed to extend to the bottom, it characterized in that to reduce the discharge pressure and the amount of water sprayed to the top by weakening the water output to the top of the sprinkler (58).

On the other hand, it is preferable that the heater 621 is provided in the sprinkling tank 62.

In addition, the buoyant body 591 is preferably a cross-section of the fan shape, the sub leg 592 is a rod shape, a plurality of spaced apart along the longitudinal direction of the sprinkling tube 58 is preferably provided.

The contaminant processor contributing to the increase in digestion efficiency of another aspect of the present invention includes an inflow path 15 having an inlet 11 through which the waste liquid flows from the outside, and the inflow through the inlet 11 The waste liquid flowing into the furnace 15 is brought into contact with the outer circumferential surface of the rotary filtration cylinder 12 with a filtration gap formed on the main surface, and the medium contaminants are filtered to be discharged from the opposite side of the contact surface. A rotary screen (1) having the filtrate passing through the filtration gap falling downward; A storage tank 14 installed at a lower portion of the rotary screen 1 to temporarily store the filtrate introduced from the rotary screen 1; Cyclone (2), a solid-liquid instantaneous separating function that receives the filtrate from the storage tank 14 through the transfer pump 16, discharges the sand component to its lower part, and discharges the filtrate to its upper part. ); A horizontal screw decanter (3) for receiving sand components discharged to the lower portion of the cyclone (2) and dehydrating it in a centrifugal manner to separately discharge dehydrated sand and desorption liquid; A wedge bar drum filter (4) that receives the filtrate of the cyclone (2) and filters fine contaminants through a wedge-shaped wedge bar filter (411) having a longitudinal cross-section; A cylinder 52 having a perforated main surface that is horizontally installed and provides a cylindrical inner space, a shaft 53 rotatably installed inside the cylinder 52, and axially rotated by external power, and the cylinder 52 A screw 54 provided on the shaft 53 for transferring sludge flowing into the cylinder 52 through the inflow chute 51 formed by partially cutting one upper main surface, and on the other side of the shaft 53 It is provided, but comprises a cross-sectional area adjustment tool 55 for generating a pressing force on the passing material by gradually reducing the space cross-sectional area between the shaft 53 and the cylinder 52, the rotary screen 1 and the wedge The combined sludge discharged from the wedge bar drum filter 4 is dehydrated, and the desorption liquid is discharged to the dehydration hole 521 formed in the main surface of the cylinder 52, and the dehydrated sludge is the cylinder 52. Slur provided on the other side Screw press (Screw press), (5) a discharged to the discharge port (57); And a discharge conveyor (7) for discharging the discharge sand of the screw decanter (3) and the discharge sludge of the screw press (5) to the outside, and with the desorption liquid discharged from the screw decanter (3) The filtrate of the wedge drum filter (4) and the debris of the screw press (5) is treated with contaminated water to be transferred to the digestion process line, the shaft 53 of the screw press (5) is The entire portion located under the inlet chute 51 is a hollow tube shape, and the outer periphery becomes a sprinkling container 58 formed with a plurality of sprinkling holes 581 formed thereon, the sprinkling container 58 and the shaft 53 One side cross-section is provided with an inlet passage 535 formed to communicate with each other, passing through the rotary joint 61 provided at the entrance of the inlet passage 535 from the trickle tank 62 through the trickle pump 6 Pass through the lead-in passage 535 and into the sprinkler barrel 58 The water is spouted through the sprinkling holes 581 to be sprinkled inside the cylinder 52 under the inlet chute 51, and a buoy 59 is provided in the inner space of the sprinkling container 58. , The buoy 59, when water enters the interior space of the sprinkler (58), the buoyant body (591) and the buoyant body (591) to float in the water over the entire length of the sprinkler (58) It is provided to include a sub-bridge 592 formed to extend to the bottom, characterized in that to reduce the discharge pressure and the amount of water sprayed to the top by weakening the water output to the top of the sprinkler (58). A screw press (5) containing bio nutrients is a contaminant processor that allows the desorbent to flow into the digestion process line, contributing to the increase in biogas production.

Meanwhile, it is preferable that the heater 621 is provided in the sprinkling tank 62.

In addition, the buoyant body 591 is preferably a cross-section of the fan shape, the sub leg 592 is a rod shape, a plurality of spaced apart along the longitudinal direction of the sprinkling tube 58 is preferably provided.

The present invention is a contaminant treatment device for filtering and dewatering solid substances, such as sludge and sand, contained in the organic waste liquid, in a screw press 5 serving as a sludge dewatering function, which is a core device, to prevent dehydration holes 521 from being clogged and smooth Dehydration effect, the effect of pre-emission of the fine sludge into the dehydration hole 521 to increase the efficiency of the subsequent digestion process to increase the amount of biogas generated, and in particular, to prevent harmful effects due to oil and fat components and to reduce the moisture content of the discharged sludge. This will be described in detail as the sludge is reduced and the size of the dewatering hole 521 is reduced to prevent the medium-sized particles from escaping into the dewatering hole 521, thereby increasing the removal efficiency of medium-sized or more sludge.

The desorption liquid of the screw press 5 to be introduced into the digestion process line should contain as much as possible fine sludge as a bio nutrient together with the liquid component. However, if the sludge of medium size or more exceeding the range is included in the desorption liquid, the digestion efficiency in the digester is lowered as well as concentration in the digester inflow process line, sedimentation and slurry formation in the mixing tank, scale generation and closure of the pipe line, equipment There are many problems such as damage to the digester and deterioration of the stirring performance of the digester.

There is a limit to solving such an important size of the desalination range of the important sludge as the size of the individual dewatering holes 521 as in the prior art. That is, even if the size of the dewatering hole 521 is increased in order to remove the fine sludge, sand rather than the effect of separating the fine sludge entangled with other sludge and exiting the dewatering hole 521. Some of the relatively heavy medium-sized sludges, mainly seeds, easily escape, and the negative effect of lowering the removal rate of medium-sized sludges first appears. As described above, the present invention has not been solved as the size adjustment of the dewatering hole 521, and the present invention applies an effective sprinkling method to drop the surface tension, cohesion, and adhesion of the tangled sludge to separate the fine sludge to easily remove the dewatering hole 521. As a way to get out. If the application and the effect of the sprinkling method in detail,

The screw press 5 can be divided into a sludge transfer section and a sludge compression section. The transfer section is the same concept as a general screw conveyor with an open top, which serves to transport sludge flowing down from the top into the crimping space. The crimping section in the next step is blocked in all directions of the inner circumferential surface of the cylinder 52 and has a cross-sectional area adjustment. (55) As the forward force increases, the compressive force acting on the passing material increases, and dehydration proceeds with this squeezing force, and the desorption liquid escapes into the dewatering hole 521 of the main surface of the cylinder 52, and the dehydrated sludge discharges the sludge discharge port on the opposite side of the inflow (57). As the configuration discharged to the conventional sludge transfer, the present invention is said to have added the fine sludge removal function to the transfer section, which is the role of the core.

This is a hollow shaft with the inside of the shaft (3) in the transfer section as a sprinkler barrel (58), and through the sprinkling hole (581) of the main surface, directly pierce the dewatering hole (521) and remove fine sludge. By diluting the sludge and diluting the sludge, the surface tension, viscosity, cohesion, and adhesion of organic materials that interfere with the dewatering effect of the sludge are reduced to increase the water drainage effect of the dewatering hole 521 to increase the size of the dewatering hole 521 more than before. By making it small, the medium-sized sludge is prevented from passing out to the dewatering hole 521, so that the removal efficiency of the medium-sized abnormal sludge is increased, and more moisture and fine contaminants are removed beforehand in the transport section, so that the following compression is performed. There is an effect that can further increase the dehydration performance in the section.

The dirt (sludge) introduced into the screw press (5) is a material that is caught in a gap of a certain size from the rotary screen (1) or the wedge bar filter (4), which is the previous step, so that the material is smaller than the passage gap. Although it should not be included in this case, it is actually tangled together due to the viscosity, cohesiveness, and adhesion of the sludge, or is filtered together in a state such as hair, so that it enters the screw press 5 in the same way as a medium-sized sludge. Because there are many, the sprinkling effect and dilution effect by fresh water in the transfer section, not the dehydration section of the screw press 5, play a large role in separating the fine sludge by releasing the sludge and disintegrating the agglomeration.

Although the screw press 5 is a device for the purpose of dehydration, supplying water directly in this way, when water is sifted to remove moisture of a highly viscous substance, the water is sprayed on the sieve to disintegrate and the water is disintegrated. It is the same reason that the effect is improved. Unlike the compression section of the screw press 5, which is completely filled with sludge, the transport section has a lot of empty space because the sludge is filled with less than half of the normal space, so that the separation and penetration dilution as described above can be easily achieved. It can exert a sprinkling effect.

As described above, the effect of the present invention in which the overall dehydration rate is increased by removing the maximum amount of moisture and fine sludge from the transfer section in advance produces another effect. It is related to the subsequent process. The higher the dehydration rate of the screw press 5, that is, the more the moisture content of the discharged sludge is reduced, the higher the qualitative and quantitative level of the organic nutrients from the discharged sludge is. In this case, biogas productivity is improved. To explain this, the screw press 5 basically dehydrates free water having a low concentration of organic matter surrounding the sludge particles, and as the dehydration performance improves, the next step is, as a next step, capillary force between the flock structures. Dewater the interstitial water that is constrained. The performance of the screw press 5 usually depends on the extent to which the gap water is dehydrated. The higher the dewatering performance, the more the intertwined pore water is released. When the desorption solution of pore water containing a lot of high-quality bio-nutrients compared to free water enters the digester, it becomes a soluble, high-quality food of bacteria, contributing to the increase in biogas production. That is, the qualitative and quantitative nutritional effects of pore water are added together with the micronutrient's own nutritional effect.

By removing the fine sludge from the transfer section in advance to be included in the desorption liquid, the simple desorption liquid mainly composed of a conventional liquid component is upgraded to a desorption material as a bionutrient, thereby exhibiting various effects. In other words, this micro-sludge of the present invention is a fine particle having a size of 1 mm or less, and the surface contact area is large, so the first solid that is a nutrient of bacteria that has good decomposition and decomposition effect, and a fine solid that has a low dehydration effect in the compaction section, It shows the second effect of improving the dehydration performance of the compression section by not entering and reducing sludge moisture, and the third effect of producing a lot of good quality bacterial nutrients by improving the desorption effect of the sludge floc by improving the dehydration performance. The above effects result in an increase in the amount of biogas generated, and a water reduction and reduction effect of waste sludge.

Looking at the correlation between the desorption of the sludge and the reduction of the sludge, if the fine sludge is not desorbed from the contaminant treatment unit and goes out to the discharge sludge, it becomes the waste sludge as it is, but when it is included in the desalination solution, about half is biogasified and the other half is digested. The resulting sludge becomes dehydrated and becomes the final waste sludge. That is, putting the fine sludge into a desalination material and putting it into the digester has the advantage of being resurrected as a gas component with about half the economic efficiency, and at the same time, has a dual beneficial economic and environmental advantage of reducing the ratio of waste sludge to half.

The dehydration effect of the screw press 5 with improved performance of the present invention is medium and large sludge, which is a waste sludge, and fine sludge and organic nutrients are desorption liquids, each of which results in properly clearing the way to go. There is also room for reducing the size of (521) more than the conventional, there is also an effect of increasing the removal rate of medium-sized sludge.

The flow of effects and the effects of the present invention are summarized as follows.

The screw press of the contaminant processing machine screw (5) circulates the axis 53 of the transfer section → water jetting action → direct penetration of the dewatering hole 521, micro sludge separation action, dilution action → desorption action of the micro sludge transport section, preliminary removal of sludge moisture → Increased dehydration performance in the compression section → Increased specific gravity of the desalination solution, increased amount of desalination solution, increased fine sludge content in the desalination solution → Increased the quality and quantity of microbial food in the desalination solution into the digester → Increased digestion efficiency → Increased biogas generation effect, reduced waste sludge moisture, Weight reduction effect.

As described above, the action effect of the buoy 59, which is another main element in the effect expression of the present invention, is described as the sprinkling hole 581 of the water sprinkler 58 in which the water flowing into the rotary joint 61 rotates. When injected into the cylinder 52 through), the water stream ejected from all the sprinkling holes 581 formed in the sprinkling container 58 is periodically radiated in the 360 ° direction by the rotation of the sprinkling container 58. At this time, when the jetted water is sprayed downwards and laterally, the sludge is directly hit by the sludge to remove fine particles, the water flows directly through the dehydration hole 521, and acts as a dilution water supplied directly to the sludge to serve as the surface of the sludge. It lowers the tension, viscosity, cohesive force, adhesion, etc. and secures the water drainage path, thereby increasing the water drainage effect. However, there is a problem in that this water stream rises high to other devices in the upper portion due to the ejection pressure at the time of ejection to the upper portion of the cylinder 52, that is, the inlet chute 51. Depending on the ejection pressure, the elevation may be close to 1 m. This is due to the fact that the sludge flowing into the screw press (5) is continuously lowered at a constant speed and does not come in intermittently, and thus, unlike the compression section, the shaft (53) is not always covered with sludge in the transport section. In the sprinkling hole 581 of the shaft exposed to the upper side, an undesirable phenomenon occurs in which the pressure water is ejected into the air.

In order to prevent this phenomenon, the present invention provides a buoy 59 having a fan-shaped cross-section with a radius slightly smaller than the inner radius of the water bottle 58 and a length slightly shorter than the length of the inner space of the water bottle 58. Put the inside of the sprinkler (58), despite the rotation of the shaft 53, the inner circumferential surface of the sprinkler (58) and the buoyant body (591) by always keeping the buoyant body (591) in the inner upper portion of the inner sprinkler (58) inside the hollow shaft ), The gap between the main surfaces of the outer part of the trauma is kept narrow, and the water flowing out to the upper portion is weakly reduced and the amount of water is reduced to prevent the problem of soaring upward.

Since the screw press 5 of the present invention rotates at a low speed of 20 rpm or less, the buoyant body 591 portion of the sprinkling container 58 is made larger by increasing the buoyancy than the indirect rotational force acting on the buoy 59 inside the sprinkler container 58. It is possible to always stay in the upper portion of the sprinkler (58) without following the rotation of the.

In addition, when the sludge with a large amount of retaining component flows in, the retaining component has a very high viscosity and surface tension to prevent dehydration hole 521 of the cylinder 52 and prevents water drainage and has strong hydrophobicity, so it is not well mixed with other sludge. This prevents the dehydration function of the screw press 5 from being exerted. In particular, when the edible oil and fat component is made of a white bead-like substance in combination with the ammonia protein component during the winter season, the elasticity of the beads, such as jelly, further hinders the dehydration of the sludge. At this time, if the hot water heated by the heater 621 is used as a squirt water, the hot water acts as an emulsifier for the fat and oil components, thereby reducing the binding degree of the fat and oil components, thereby reducing the adverse effects due to the fat and oil components. have. Since the cohesive force of the bead-like material is in contact with water having a temperature of 45 ° or more, a good effect can be obtained by spraying heated water at a temperature of about 60 to 80 °. In addition, the heating effect of sprinkler, which will be actively utilized in winter, is not only about the oil and fat components, but also has the effect of lowering the viscosity and cohesion of sludge, increasing the separation and disintegration power, and further increasing the dehydration performance compared to cold water. .

Here, compared to the method of sprinkling water from the upper portion of the screw press (5) inlet chute 51 (Patent No. 10-0848711), if the effect is observed, the inlet chute 51 upper watering method is sludge descending Even if you can sprinkle at an angle that can be avoided as much as possible, it is inevitable that a significant portion of the sprinkler stream will first collide with the falling sludge, causing the sludge hit by the sprinkler, especially fine sludge, to fall under water pressure from the air and contaminate the inner surface of the chute. There is. Moreover, this method is seen in the recent screw press (5) combined inflow structure in which sludge of different properties flows in various directions. In the present invention, the contaminant processor also has two locations: the rotary screen (1) and the wedge drum filter (4). There may be a case of descent. It is more difficult to sprinkle the descent so that it can avoid collision with various sludges in the air. Therefore, the upper sprinkling method of the inlet chute 51 has a problem that it is difficult to fully utilize the water spraying effect such as the effect of directly piercing the dewatering hole 521 and the separation effect of the fine sludge, and the heat utilization is lowered even when heated hot water is used. In contrast, in the case of the present invention, as there is no water flowing in the air to the upper portion of the inlet chute 51 as described above, there is no problem of contamination of the inlet chute 51. It exerts necessary functions such as effect, dilution effect, and heat utilization effect.

The conventional method of spraying the water outside the cylinder was literally a role of simply washing the cylinder, but the water injection method inside the cylinder of the present invention creates various effects required in the screw press transfer section such as penetration, separation, and dilution, and also the same inner cylinder injection method. The present invention is superior to the above-described inflow chute 51, which is superior to the spraying method.

1 is a schematic diagram of a schematic configuration according to an embodiment of the present invention,
Figure 2 is a schematic side view of Figure 1,
3 is a schematic plan view of FIG. 1,
4 and 5 are schematic front and rear views of FIG. 1,
Figure 6 is a side view of the main part of the screw press,
7 is a cross-sectional view taken along line AA of FIG. 6,
Figure 8 is a schematic cross-sectional view of the screw press shaft, excluding the buoy,
9 is a schematic cross-sectional view including a buoy in FIG. 8,
10 is an enlarged side view of the buoy,
11 is a front view of FIG. 10,
12 is a schematic diagram of a schematic configuration according to another embodiment of the present invention,
13 is a schematic side view of FIG. 12,
14 is a schematic plan view of FIG. 12,
15 and 16 are schematic front and rear views of FIG. 12,

<Example 1>

The present invention is a device composed of a system configuration in which several unit devices each having a separate function are combined and operated in steps. The first step is a rotary screen (1), which is solid / liquid that has entered through the inlet (11) on the outer circumferential surface of the rotary filter cylinder (12) constructed by assembling the unit filter body (121) having a certain gap. When the mixed liquid is contacted to filter the contaminants having a size of 5 to 6 mm or more, as a large contaminant or a sludge filtration device, this will be described in detail.

The material to be treated, which has entered the inflow path 15 through the inlet 11, comes into contact with the outer circumferential surface of the filtration cylinder 12 and passes to the opposite side according to the rotation of the filtration cylinder 12. Solid materials and liquids smaller than the gap are <falling into the lower storage tank 14, and contaminants larger than the gap are attached to the outer circumferential surface and passed over to the other side, and flow down to the screw press 5. At this time, the aggregate of the disk 13 to help the separation of sludge attached to the filter body 121 of the outer circumferential surface of the filtration cylinder 12 is installed on the opposite circumferential surface at the same height as the central axis of the filtration cylinder 12. Since the aggregate of the disk 13 is inserted at a certain depth in each gap of the filter body 121 and rotates in the same direction as the filter cylinder 12, it plays a role of removing and dropping contaminants attached to the main surface and the gap.

Next is the sand filtration cyclone (2),

A conical taper that narrows downward toward the bottom of the vertical cylinder extends, and a sand outlet is provided at the bottom of the cone, and the upper surface of the cylinder is sealed, but a circular liquid discharge pipe protrudes vertically in the center. This is a structure in which the inlet pipe is attached in the tangential direction of the cylinder on the outer circumferential surface of the cylinder.

Looking at the operation, the solid-liquid mixture introduced into the inlet pipe of the cyclone 2 from the storage tank 14 under the rotary screen 1 through the transfer pump 16 is the inner surface of the cylinder and the conical bottom thereof. In the process of rotating and descending, a strong centrifugal force is generated, and the relatively heavy sand component is in close contact with the inner circumferential surface and then descends, and the relatively light liquid and fine sludge have a semi-current that fills the low pressure part formed inside the cone. As it rises to the top and is discharged to the liquid outlet, the sand component and the liquid component are separated instantaneously continuously to the bottom and top respectively.

Next is a screw decanter 3, which is a device for introducing and dewatering the discharged sand component of the lower sand outlet of the cyclone 2, and the outer cylinder and inner screw have a slight rotational difference and rotate at high speed in the same direction. It is a device that dehydrates sand by separating specific gravity by generating strong centrifugal force (usually more than 100 times the earth's gravity). The dehydrated sand is mainly transferred to the upper part once through the inclined conveyor 31, and then leads to the external carry-out conveyor 7, and the lysate liquid exits the slit liquid discharge port 32 and finally joins the treated water discharge port 46 and is discharged outside.

Screw press (5) of the next step,

A horizontally fixed, partially cut upper surface of the upper surface of the circular cylinder 52 having a plurality of dehydration holes 521 on the main surface to make the inflow chute 51 for the sludge, and a screw shaft concentric with the cylinder 52 cylinder By rotating (53) as an external power, and advancing and dewatering the introduced sludge, the lower part of the inlet chute (51) is used as a contaminant transport section and is gradually gradual to the passing material with a cross-section control section (55) in the shape of a reverse cone. Decomposition of the main surface of the cylinder 52 by dehydration by dehydration of the main surface of the cylinder 52 by dehydration by the action of a compressive force that gradually increases between the flow of the sludge passing through the compression section through the transfer section by using the next section configured to apply the compression force 521) and the dewatered sludge forms a screw press (5) that makes it go out to the sludge discharge port (57) on the side of the cylinder (52) opposite to the inflow side, the inflow chute (51) Room that is provided with a plurality of water spray holes (581) in the hollow portion in the rotating spray tube 58 and spray tube (58) major surface to the axis 53 of the hollow shaft portion corresponding to the feed zone. The inlet passage 535 of the ejection water is formed in the center of the axis 53 from the sprinkler barrel 58 to the opposite side of the discharge side, that is, the outer side of the electric shaft 53, and the center of the outer surface of the shaft 53, that is, the inlet passage A rotary joint (61) is provided at the starting point of (535) and configured to supply water to the sprinkler (58) inside the rotating shaft (53), but the buoy having a fan-shaped cross section inside the sprinkler (58) (59) always stays on the upper layer to reduce the amount of water sprinkled to the upper portion of the shaft (53) and weaken the ejection pressure.

As described above, the shaft 53 is first divided into three parts to produce a configuration in which the hollow shaft 53 is formed with a sprinkling container 58 and a buoy 59 is placed inside the sprinkling container 58. The shaft portion (hereinafter referred to as the inlet shaft) 531 provided with the inlet path 535, the shaft portion (hereinafter referred to as a water-spraying shaft) 532 provided with the sprinkling container 58, and the shaft portion (hereinafter referred to as the compression shaft) Divided into (533) and processed separately, the two shafts (532, 533), such as the sprinkling shaft (532) and the compression shaft (533), are welded on the outer circumferential surfaces of the shafts (532, 533) to form a single shaft. Screw 54 is welded. Next, after inserting the buoy 59 in the inner space of the sprinkler container 58, the sprinkling shaft 532 and the inlet shaft 531 are assembled into shaft assembly bolts 534, and the shafts 531, 532, and 533 of the three parts are assembled. ) Is completed with one axis 53.

Here, the sprinkling container 58 and the sprinkling shaft 532 are one object. However, depending on whether it is the role of the sprinkling container or the role of the shaft (hollow shaft), it is called differently.

If the configuration related to the buoy 59, which is the main element of the present invention, is described in detail, if the incision angle of the cylinder 52 cut from the top to form the sludge inflow chute 51 is 140 °, the fan shape of the buoy 59 The angle of the arc in cross section is about 150 ° slightly larger than this. Then, at the center of the arc of the fan-shaped section (on the front view of the buoy), hang a vertical bar, or buidari (592), like the handle of the fan. This sub-bridge 592 is intended to prevent a situation in which the buoy 59 is inverted because the string (straight line), not the fan-shaped arc (curve) of the buoy body 591, rises upward from the inside of the sprinkler barrel 58. It is preferable that the diameter of the entire cross-section including the sub leg 592 is about 2 to 3 mm smaller than the inner diameter of the sprinkling container 58. The number of sub-legs 592 is sufficient for each of the four ends, one at each end. The length of the buoy 59 is shorter by 3 mm than the length of the sprinkler barrel 58. In this way, despite the rotation of the water bottle 58, the buoyant body 591 is always floating on the inner upper portion of the water bottle 58, and underneath it, the buid legs 592 stand close to vertical. Since the inner upper space of the sprinkler container 58 is always filled with the buoyant body 591 regardless of rotation, the gap between the inner circumferential surface of the sprinkler container 58 and the outer circumferential surface of the buoyant body 591 is always kept narrow. It creates the effect of reducing the pressure and quantity of water that is blown out. In order for the buoyant body 591 to always float on the upper layer, the buoyancy and weight of the buoy 59 must be well matched. At this time, the buoyancy calculation is taken as the specific gravity of 80 ° hot water in consideration of the hot water, and the buoyancy of the buoy 59. When the weight is larger, the buoyancy of the buoy 59 can be increased to a shape in which the center of the arc is lower than the fan shape, that is, a narrow and long fan shape. However, as the space occupied by the buoyant body 591 increases, there is a problem in that the volume of the sprinkling container 58 becomes small. In consideration of this, it is necessary to pay attention to the selection of the material and thickness of the buoy 59.

The screw press (5) is a conical roller bearing (536) that mainly supports the thrust load on the outer circumferential surface of the inlet shaft (531), a ball bearing (537) that mainly supports the radial load, and an external deceleration motor transmitted between the two It is assumed that the sprockets 538 to which the electric power is connected are provided with each.

In addition, the method of gradually reducing the cross-sectional area of the inner space of the cylinder 52 in the crimp section is screwed to the conical cross-section control section 55 having a larger diameter toward the outside at the end of the crimp section, that is, the sludge discharge port 57 Position it at the end of (54). This is not a method of gradually reducing the cross-sectional area over the entire compression section, but rather a reduction of the cross-sectional area of some sections. The compression force of the cross-sectional area adjustment section 55 in the final section of the compression section is sequentially transferred in the reverse direction, resulting in compression force across the compression section. It is a structure. The cross-sectional area adjustment method is not a conical method, but a method of gradually reducing the diameter of the cylinder 52, that is, a conical shape of the end portion of the cylinder 52, or a method of gradually reducing the pitch of the screw 54 is also possible.

It is preferable to insert a bearing between the cross-sectional area adjustment device 55 and the shaft 53 so that the cross-sectional area adjustment device 55 does not rotate even if the axis 53 rotates. In this way, the rotational force is not applied to the compressed sludge in close contact with the cross-sectional area adjusting device 55, so that the forward force of the sludge increases and the taper angle of the cross-sectional area adjusting device 55 is increased by the increased forward force to increase the compression force, that is, the dehydration power. It is possible to reduce the moisture of the discharged sludge.

In addition, the lateral spacing (pitch) of the sprinkling holes 581 varies depending on the size of the sprinkling holes 581, but about 15 to 20 mm, and the interval angle in the longitudinal direction (circumferential direction) is appropriately about 90 to 120 °. . The actual jetted water has a slightly spreading angle, so if the pitch is the above, the jetted water from the multiple sprinkling holes 581 can directly penetrate almost all the dewatering holes 521 in the transfer section. The location where the screw 54 is to be welded is marked in advance and the sprinkling hole 581 is processed by avoiding the spot.

The heater 621 device, which is a heating means for sprinkling water, is preferably a heater heater built in the sprinkling tank 62.

Set the temperature controller to set the water temperature around the heater to about 60 ~ 80 ° and select the size of the sprinkler tank 62, the location of the heater, the amount of heat, etc. in accordance with the amount of water per hour, but the proper water temperature of the spout is continuously maintained even in the cold. It is desirable to be kept.

In this embodiment, the final discharged material is the filtrate discharged to the upper portion of the cyclone (2) and the desorption solution of the screw decanter (3), which is introduced into the subsequent main treatment process through the treatment water discharge port (46), and the screw press ( The desorption material of 5) gathers in the desorption tank 56 and enters the digestion process line through the desorption material discharge port 561, and finally enters the digester, and the dewatered sludge and screw decanter (3) of the screw press 5 ) The dehydrated sand component is taken out through the conveying conveyor (7).

<Example 2>

This is the configuration of the second solution, in which the wedge drum filter 4 for filtering fine contaminants in Example 1 is added.

The wedge bar filter 4 is formed by forming a long and narrow rod (wedge bar) having a wedge-shaped longitudinal cross section so that a certain gap is formed to form a cylindrical filter drum 41 as a whole, but from the inner circumferential surface of the filter drum 41 to the outside. A filter that prevents the gaps from becoming constricted to solids during the filtration process by gradually increasing the gaps, slightly inclining the filter drums 41 horizontally (1 ~ 2 °) to install the center of the circle of the high convenience filter drums 41 (hollow shaft) As a result, the filtrate from the liquid outlet of the cyclone 2 was introduced to rotate at a low speed. In the process of moving the object to the other side, the liquid component escapes into the gap of the wedge bar and passes to the hopper 45. After descending, it is discharged to the treated water discharge port 46 and the sludge filtered out of the gap comes out to the lower side outlet and flows down into the screw press 5.

While the conventional drum filter with a unit filter hole in a circular shape has a negative effect of reducing the actual passage and area of the filter hole under the influence of surface tension and viscosity acting in all directions of the individual filter holes, the wedge bar filter body 411 Since the filter hole has a long slit, the force that interferes with filtration is applied only in two directions, so that the phenomenon of interfering with the gap is greatly reduced.

In addition to this, a cleaning device including a washing tank 42, a washing pump 43, a washing water pipe, and a washing nozzle 44 is provided on the outer circumferential surface of the filter drum 41 to prevent contamination of the wedge bar filter body 411. do. When this washing device is reciprocating, the number of washing nozzles 44 is reduced while the washing effect can be saved because the washing effect is the same as that of the fixed type.

In the present embodiment, the final discharged material is the filtrate of the wedge bar filter (4), the desorption liquid of the screw decanter (3), and the desorption material of the screw press (5). ) And finally through the fire extinguishing process line, and finally into the digester, the dehydrated sludge of the screw press 5 and the dehydrated sand components of the screw decanter 3 are taken out through the export conveyor 7.

The configuration of Example 1 is mainly used for pretreatment of manure, livestock manure, and the like. This is mainly applied to a so-called sewage linkage treatment system in which manure or livestock manure is removed from the solids contained in the pre-treatment process and then the filtrate is sent to the sewage treatment process to be mixed with sewage and secondarily combined. In this method, since fine solids can be treated in the sewage treatment process, the fine solids filtration device such as the wedge bar filter 4 is unnecessary in the pretreatment step. However, in the present invention, the desorption liquid of the screw press 5, which has been treated water with the cyclone (2) filtrate and the screw decanter (3) desorption liquid and discharged to the subsequent treatment line, is not a simple desorption liquid but a bio-nutrient rich desalination material. As it is upgraded, it can be injected into the fire extinguishing process line, thereby exerting its effect on increasing the amount of biogas generated.

The configuration of the second embodiment is a contaminant treatment apparatus applied to a process of treating mixed sludge in a primary sewage settling tank in the sewage-linked combined treatment method as well as sewage alone, and the treated water produced is concentrated and mixed Afterwards, the entire amount is transferred to the digestion process line flowing into the digester, which also contributes to increased digestion efficiency and increased biogas generation.

In addition, the reduction in the amount of water discharged sludge of the present invention reduces the amount of discharged sludge by itself, and when it is incinerated, the amount of auxiliary energy can be reduced. Although there may be differences depending on the sludge composition and the incineration method, when the moisture of the sludge is about 66 to 68%, it is spontaneously ignited, and the best result of unnecessary auxiliary fuel can be obtained. In addition, in any disposal methods other than incineration, such as landfill, solidification, carbonization, and recycling, in addition, the economic effects of reducing and reducing sludge moisture in the pre-disposal process such as transportation, loading and unloading, storage, and management appear greatly.

For example, when 100 g of sludge with 80% moisture (average of the final sewage sludge) is reduced to 70%, the moisture reduction rate is only 10% points, but the amount of sludge is about 67 g {(x-20) / x = 70 / 100, ∴x ≒ 67} reduces 1/3, and the disposal cost of sludge is reduced by 1/3, and 70% of sludge has a low moisture ratio, so even if the same amount of sludge is disposed, auxiliary fuel input is reduced. Therefore, a double economic effect occurs that saves energy costs.

 As described above, the present invention will contribute to the increase in biogas production by increasing the digestion efficiency along with the effect of reducing and reducing sludge moisture, and thus the industrial and environmental applicability of the present invention will be sufficient.

1: Rotary screen 11: Inlet 12: Filtration cylinder
121: filter body 13: disc 14: storage tank
15: inlet passage 16: transfer pump 2: cyclone
3: Screw Decanter 31: Inclined Conveyor 32: Tally liquid outlet
4: Wedge bar filter 41: Filtration drum 411: Wedge bar filter
42: washing tank 43: washing pump 44: washing nozzle
45: hopper 46: treated water outlet 5: screw press
51: inlet chute 52: cylinder 521: dehydration hole
53: axis 531: incoming axis 532: water shrinkage
533: crimp shaft 534: shaft assembly bolt 535: inlet
536: conical roller bearing 537: ball bearing 538: sprocket
54: screw 55: cross-sectional area adjustment mechanism 56: tally material tank
561: Tally material discharge port 57: Sludge discharge port 58: Sprinkler
581: sprinkler 59: buoy 591: buoy torso
592: Buidari 6: Sprinkler pump 61: Rotary joint
62: sprinkling tank 621: heater 7; Export Conveyor

Claims (5)

It includes an inflow passage 15 having an inlet 11 through which the waste liquid flows in from the outside, and the waste fluid flowing into the inflow passage 15 through the inlet 11 is filtered on the main surface. A rotary screen (1) that touches the outer circumferential surface of the formed rotary filtration cylinder 12 so that contaminants of 5 mm or more are filtered and dropped and discharged from the opposite side of the contact surface, and the filtrate passing through the filtration gap falls downward. );
A storage tank 14 installed at a lower portion of the rotary screen 1 to temporarily store the filtrate introduced from the rotary screen 1;
Cyclone (2), a solid-liquid instantaneous separating function that receives the filtrate from the storage tank 14 through the transfer pump 16, discharges the sand component to its lower part, and discharges the filtrate to its upper part. );
A horizontal screw decanter (3) for receiving sand components discharged to the lower portion of the cyclone (2) and dehydrating it in a centrifugal manner to separately discharge dehydrated sand and desorption liquid;
A cylinder 52 having a perforated main surface that is horizontally installed and provides a cylindrical inner space, a shaft 53 rotatably installed inside the cylinder 52, and axially rotated by external power, and the cylinder 52 A screw 54 provided on the shaft 53 for transferring sludge flowing into the cylinder 52 through the inflow chute 51 formed by partially cutting one upper main surface, and on the other side of the shaft 53 It is provided, but comprises a cross-sectional area adjustment tool 55 that generates a compressive force on the passing material by gradually reducing the space cross-sectional area between the shaft 53 and the cylinder 52, and is discharged from the rotary screen 1 By dewatering the filtered material, the desorption liquid is discharged to the dewatering hole 521 formed in the periphery of the cylinder 52, and the dewatered sludge is discharged to the sludge discharge port 57 provided on the other side of the cylinder 52. Screw press (Screw press) (5); And
It comprises a discharge conveyor (7) for discharging the discharge sand of the screw decanter (3) and the discharge sludge of the screw press (5) to the outside,
In the filtrate discharged to the upper portion of the cyclone (2), and the desorption liquid discharged from the screw decanter (3) and the desorption liquid of the screw press (5) in a contaminant processor to be discharged to a subsequent treatment process,
The shaft 53 of the screw press 5 has a whole portion located below the inlet chute 51 in the shape of a hollow tube, the outer circumference of which is formed with a plurality of sprinkling holes 581 formed through a sprinkling tube 58 Is, the one side cross-section of the sprinkler (58) and the shaft (53) is provided with an inlet passage (535) formed to communicate with each other, from the sprinkling tank (62) through the sprinkling pump (6) to the inlet passage (535) Through the rotary joint (61) provided at the entrance of the water through the inlet passage (535) and the water flowing into the sprinkler (58) is ejected through the sprinkling holes (581), the lower portion of the inlet chute (51) Let the inside of the cylinder 52 of the sprinkler,
A buoy 59 is provided in the inner space of the sprinkler bottle 58, and when the water enters the inner space of the sprinkler bottle 58, the buoy 59 extends over the entire length of the sprinkler bottle 58. It is provided to include a buoyancy body (591) to float in the water, and a buidari (592) formed to extend to the lower portion of the buoyancy body (591), the upper portion by weakening the water output to the upper portion of the sprinkler (58) Reduced discharge pressure and quantity of water to be sprinkled, and the screw press (5) containing bio nutrients to remove the debris into the digestion process line, a contaminant handler contributing to the increase in digestion efficiency. According to claim 1,
The sprinkling tank 62 has a heater 621, characterized in that the contaminant processor that contributes to increase the digestion efficiency. The method according to claim 1 or 2,
The buoyant body 591 has a fan-shaped cross section in the transverse direction,
The sub leg 592 is a rod-shaped, contaminant processor contributing to the increase in digestion efficiency, characterized in that a plurality of spaced apart along the longitudinal direction of the sprinkler (58). It includes an inflow passage 15 having an inlet 11 through which the waste liquid flows in from the outside, and the waste fluid flowing into the inflow passage 15 through the inlet 11 is filtered on the main surface. A rotary screen (1) that touches the outer circumferential surface of the formed rotary filtration cylinder 12 so that contaminants of 5 mm or more are filtered and dropped and discharged from the opposite side of the contact surface, and the filtrate passing through the filtration gap falls downward. );
A storage tank 14 installed at a lower portion of the rotary screen 1 to temporarily store the filtrate introduced from the rotary screen 1;
Cyclone (2), a solid-liquid instantaneous separating function that receives the filtrate from the storage tank 14 through the transfer pump 16, discharges the sand component to its lower part, and discharges the filtrate to its upper part. );
A horizontal screw decanter (3) for receiving sand components discharged to the lower portion of the cyclone (2) and dehydrating it in a centrifugal manner to separately discharge dehydrated sand and desorption liquid;
A wedge bar drum filter (4) that receives the filtrate of the cyclone (2) and filters fine contaminants through a wedge-shaped wedge bar filter (411) having a longitudinal cross-section;
A cylinder 52 having a perforated main surface that is horizontally installed and provides a cylindrical inner space, a shaft 53 rotatably installed inside the cylinder 52, and axially rotated by external power, and the cylinder 52 A screw 54 provided on the shaft 53 for transferring sludge flowing into the cylinder 52 through the inflow chute 51 formed by partially cutting one upper main surface, and on the other side of the shaft 53 It is provided, but comprises a cross-sectional area adjustment tool 55 for generating a pressing force on the passing material by gradually reducing the space cross-sectional area between the shaft 53 and the cylinder 52, the rotary screen 1 and the wedge The combined sludge discharged from the wedge bar drum filter 4 is dehydrated, and the desorption liquid is discharged to the dehydration hole 521 formed in the main surface of the cylinder 52, and the dehydrated sludge is the cylinder 52. Slur provided on the other side Screw press (Screw press), (5) a discharged to the discharge port (57); And
It comprises a discharge conveyor (7) for discharging the discharge sand of the screw decanter (3) and the discharge sludge of the screw press (5) to the outside,
In the debris discharged from the screw decanter (3), the filtrate of the wedge bar filter (4) and the desorption material of the screw press (5) is combined with the treated water in the contaminant processor to be transferred to the digestion process line,
The shaft 53 of the screw press 5 has a whole portion located below the inlet chute 51 in the shape of a hollow tube, the outer circumference of which is formed with a plurality of sprinkling holes 581 formed through a sprinkling tube 58 Is, the one side cross-section of the sprinkler (58) and the shaft (53) is provided with an inlet passage (535) formed to communicate with each other, from the sprinkling tank (62) through the sprinkling pump (6) to the inlet passage (535) Through the rotary joint (61) provided at the entrance of the water through the inlet passage (535) and the water flowing into the sprinkler (58) is ejected through the sprinkling holes (581), the lower portion of the inlet chute (51) Let the inside of the cylinder 52 of the sprinkler,
A buoy 59 is provided in the inner space of the sprinkler bottle 58, and when the water enters the inner space of the sprinkler bottle 58, the buoy 59 extends over the entire length of the sprinkler bottle 58. It is provided to include a buoyancy body (591) to float in the water, and a buidari (592) formed to extend to the bottom of the buoyancy body (591), the upper portion by weakening the water output to the upper portion of the sprinkler (58) A contaminant treatment device contributing to an increase in digestion efficiency, characterized by reducing the discharge pressure and the quantity of water to be sprinkled with. According to claim 4,
The sprinkling tank 62 is provided with a heater 621,
The buoyant body 591 has a fan-shaped cross section in the transverse direction,
The sub leg 592 is a rod-shaped, contaminant processor contributing to the increase in digestion efficiency, characterized in that a plurality of spaced apart along the longitudinal direction of the sprinkler (58).

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