KR101914443B1 - Waste water treatment method - Google Patents

Abstract

The present invention relates to a food waste effluent treatment method. More particularly, the present invention relates to a food waste effluent treatment method which maximizes dehydration efficiency of water including oil contained in food wastes, concentrates food waste effluent dehydrated from the food wastes, purifies the food waste effluent through a purifying agent after sieving, aerating, and fermenting, and vaporizes and collects the purified effluent in a treatment tank, so that the effluent can be used as industrial water and spraying water for road cleaning.

Description

[0001] Waste water treatment method [0002]

More particularly, the present invention relates to a method for treating wastewater, and more particularly, to maximize the dehydration efficiency of water including the oil contained in the food wastes, to reduce the amount of wastewater dehydrated from the food wastes after agglomeration, The present invention also relates to a method for treating waste wastewater, which can be utilized as industrial water and spraying water for road cleaning by collecting after evaporation in an aftertreatment tank.

Generally, 'negative wastewater' refers to the organic wastewater which is discharged from the food waste recycling process.

These waste wastewater is a waste liquid containing about 15% solids and containing easily decomposed organic matter.

Food waste and liquor wastewater are prohibited from direct landfilling, and marine dumping is prohibited by the 2013 London Convention.

Therefore, the entire sewage treatment plant should be disposed of, which may cause adverse effects on the treatment facilities and the occurrence of complaints due to odor.

Therefore, it is difficult to apply energy recovery process for food waste to small and medium scale treatment facilities because of economical efficiency.

In particular, unlike other wastewater, untreated wastewater is only subjected to a simple oil-water separation process. After 2 to 8% of the same vegetable oil remains after treatment, it is usually heated above a certain temperature and then separated and recovered by centrifugation And the oil is floated and separated.

However, this method is economically disadvantageous because it requires heating and centrifugation at a high rotation speed, which increases energy costs.

Also, in the method of extracting the waste water from the food waste, since the method is simple screw feeding or after cutting, the dewatering efficiency is also lowered, which makes it difficult to reprocess the food waste due to stickiness or viscosity of the food waste after dewatering.

Korean Patent No. 10-1406327 (Apr. 23, 2014) 'Method for producing soil remediation agent using waste water, which is a desalting solution of food waste, and soil remediation agent produced by this method' Korean Registered Patent No. 10-1282596 (2013.07.01.) 'Separation of food waste liquid oil separator' Korean Registered Patent No. 10-1168691 (Jul. 19, 2012) 'Disposal method and treatment system for waste food waste solution'

DISCLOSURE Technical Problem The present invention has been made in view of the above-described problems in the prior art, and it is an object of the present invention to maximize the dehydration efficiency of water including oil contained in food wastes, The present invention also provides a method for treating wastewater, which can purify wastewater through a purifying agent after aeration and fermentation, collect it after evaporation in a treatment tank, and utilize it as industrial water and spray water for road cleaning.

In order to achieve the above object, the present invention provides a dehydration step of dehydrating food waste after being collected and separating waste water; A step of removing suspended solids floating on the water surface by leaving dehydrated waste water; An agglomeration treatment step of agglomerating and removing residual oil and solid content by adding agglomerating agent to agitated wastewater from which suspended matter has been removed; A first sifting step of separating an aggregate and a non-aggregated solid from a liquid; A fermentation step in which an aerobic microorganism is added to the sifted first constitutional water and then allowed to stand and ferment; Aeration step in which oxygen is blown into the fermentation water during fermentation to aerate it; A second sifting step of separating the fermented solid matter and the oxide produced in the aeration-completed aeration water; A purging step of purging the sieved second body water into a reaction tank; A sterilization step of sterilizing the purified water; And sterilizing sterilized water into an evaporation treatment tank to collect evaporated water,

The dewatering step is performed in a dewatering unit 100. The dewatering unit 100 includes a fixed frame 110, a base plate 120 horizontally mounted on the fixed frame 110, A water tub 140 fixed to the upper surface of the perforated pipe 140 at a predetermined interval with a gap therebetween, a tubular perforated cylinder 140 having a double cylinder inside the water receiving cylinder 130, A drainage hole 160 for discharging the dehydrated water discharged from the water storage tank 130 to the bottom of the water storage tank 130 and supplying the food waste shredded into the perforated container 140; A scraper 180 for compressing and dewatering the food waste pulverized and injected while being rotated inside the perforated barrel 140 and a scraper 180 installed on the bottom surface of the water receiving barrel 130; A scraping motor 190 for rotating the scraper 180, A pressurized water discharge pipe 142 provided through the perforated pipe 140 and the water receiving pipe 130 and a pressurized water discharge pipe 142 passing through the pressurized product discharge pipe 142 at a point upstream of the perforated pipe 140 And a compression inducing protrusion 144 protruding in a triangular shape on the inner peripheral surface;

The suspended solids removal process is performed in an adsorber 200 where the suspended solids are adsorbed by the adsorption chamber 210. The suspended solids adsorbent 200 includes an adsorption chamber 210 for receiving negative wastewater discharged from the drain 160, A driving roll 230 driven by a motor disposed in a state of being slightly submerged in the water surface of the negative wastewater stored in the adsorption chamber 210; A tension roll 250 provided above and spaced apart from the driven roll 240 and a driven roll 250 installed between the driven roll 250 and the driven roll 250. [ And an adsorption belt 260 installed between the tension roll 250 and the driven roll 240. The adsorption belt 260 is wound around the tension roll 250 and the driven roll 240, An air flusher 270 for air flushing and separating suspended solids adsorbed by the air flushing, And prevent the guide float guide 280 that is constituted by a discharge induction pipe 290 to sound is formed at one end of the suction chamber 210, the overflow of waste water;

The evaporation collecting step is performed in the evaporation collector 300. The evaporation collector 300 includes a base table 310 fixed to the installation surface, an outer cylinder 320 fixed to the upper surface of the base table 310, An inner tubular body 330 made of an aluminum material which is embedded in the outer tub 320 in a double tubular form and a tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular type tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular body, A plurality of heater cores 350 positioned in the space between the outer cylinder 320 and the inner cylinder 330 and fixed to the outer circumference of the inner cylinder 330 to heat the inner cylinder 330, A drain valve 370 provided on the drain pipe 360 and a drain valve 360 disposed on the inside of the bent portion of the collecting pipe 340 to provide a venturi effect (380) for generating a suction pressure by a fan motor (FMR) installed on the upper portion of the bending pipe (380) And a cooling chamber 390 provided at a bent end of the collecting tube 340. The sterilized sterilized water sterilized in the sterilization step is supplied to the outer tube 320 and the inner tube 330 And sprayed so as to rotate in a circumferential direction along an inner diameter of the inner tube (330) through a sterilized water supply pipe (STP) which is pierced and penetrated.

At this time, the sterilization step is characterized by directly or indirectly sterilizing pathogens and bacteria by an oxidation reaction (photocatalytic oxidation) of an ultraviolet lamp installed in a sterilizing tank and a photocatalyst partially coated on the outer surface of the ultraviolet lamp.

According to the present invention, it is possible to maximize the dehydration efficiency of water including the oil contained in the food wastes, to purify the wastewater dehydrated from the food wastes through the agglomeration, the aeration and the purifying agent after the fermentation, So that an effect that an efficient waste water treatment can be performed can be obtained.

1 is a flow chart showing a method for treating waste water according to the present invention.
2 is an exemplary view of a dewatering unit according to the present invention.
Figure 3 is an exemplary top view of Figure 2;
Fig. 4 is an excerpt of an essential part of Fig. 2; Fig.
FIG. 5 is an exemplary view of a suspended solids adsorber according to the present invention.
Figure 6 is an illustration of an evaporative collector according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

As shown in FIG. 1, the method for treating wastewater according to the present invention includes a dehydrating step of dehydrating food waste after being collected and separating waste water; A step of removing suspended solids floating on the water surface by leaving dehydrated waste water; An agglomeration treatment step of agglomerating and removing residual oil and solid content by adding agglomerating agent to agitated wastewater from which suspended matter has been removed; A first sifting step of separating an aggregate and a non-aggregated solid from a liquid; A fermentation step in which an aerobic microorganism is added to the sifted first constitutional water and then allowed to stand and ferment; Aeration step in which oxygen is blown into the fermentation water during fermentation to aerate it; A second sifting step of separating the fermented solid matter and the oxide produced in the aeration-completed aeration water; A purging step of purging the sieved second body water into a reaction tank; A sterilization step of sterilizing the purified water; And sterilizing the sterilized water into the evaporation treatment tank to collect the evaporated water.

At this time, the dehydration step is performed by the dehydration unit 100 illustrated in FIG. 2, thereby maximizing the dehydration efficiency.

2 to 4, a dewatering unit 100 according to the present invention includes a fixed frame 110, a base plate 120 horizontally mounted on the fixed frame 110, A water receptacle 130 fixed to the upper surface of the plate 120 at intervals and a tubular perforated cylinder 140 having a double cylinder inside the water receptacle 130; A drain 160 for discharging the dewatered water drawn out downward from the water receptacle 130 and discharging the dewatered water from the water receptacle 130 and a food waste shredded into the perforated barrel 140 A scraper 180 for compressing and dewatering the food waste pulverized and crushed while rotating inside the perforated barrel 140; And a scraping motor (19) installed on a bottom surface of the scraper A squeeze water discharge pipe 142 installed to penetrate the perforated container 140 and the water receiving container 130 and a squeeze discharge pipe 142 passing through the squeezed water discharge pipe 142, And a compression inducing protrusion 144 protruding in a triangular shape on the inner circumferential surface of the perforated cylinder 140.

At this time, the position of the end pipe of the injection pipe 170 should be the point passing through the compressed water discharge pipe 142, that is, the drop point P as shown in FIG.

It is important to note that when the scrapers 180 are rotated at almost 360 ° in the rotating direction of the scrapers 180 inside the perforated barrel 140, This is because the crushed material can be compressed during the close rotation.

That is, the point at which the dropped crushed material can be compressed for a long time is the drop point P.

In addition, the perforated barrel (140) is a cylindrical type common bar having a large number of holes formed in a peripheral surface and a bottom surface in an open state, and performs dehydration by draining water through the perforation, So that the dewatering efficiency can be increased.

In addition, since the perforated barrel 140 needs to be dehydrated, the dehydrated water is collected and installed in a cylindrical water receptacle 130 to be drained.

A drain 160 is formed on a bottom surface of the water receiving tray 130, and the drain 160 is connected to an aggregating tank.

The open top of the cylindrical perforated barrel 140 is closed by a cover 150, and the inlet pipe 170 is pierced through the cover 150.

A scraping motor 190 is fixed to the bottom of the water receiving tray 130 and a rotating shaft 192 of the scraping motor 190 is rotatably supported by the water receiving tray 130 and the cylindrical perforated tray 140. [ And the scrapers 180 are fixed to the ends of the perforated barrel 140.

4, the scraper 180 includes a urethane sweeper 182, a pair of elastic plates 184 fixed to a part of the length of the sweeper 182, A spring 186 for elastically fixing the plate 184 and a reinforcing fixing plate 188 fixed to one side of the end of the sweeper 182 to bind the sweeper 182 to the rotary shaft 192 .

Particularly, the sweeper 182 has a tapered (T) machined edge, which sweeps smoothly when sweeping, of the end of the sweeper 182 that contacts the inner wall surface of the cylindrical perforated barrel 140.

The spring 186 is preferably a kind of torsion spring and the spring 186 is required when the sweeper 182 is engaged with the elastic plate (not shown) when the scraper 180 is caught by the crimp- 184 in order to allow them to pass over.

A compressed air discharge pipe 142 extending in a tangential direction is formed in a part of the periphery of the cylindrical perforated bobbin case 140 and a box B is provided under the compressed water discharge pipe 142, So as to receive the pressed squeeze.

Since the scraper 180 is made of a urethane material, when the scraper 180 comes into contact with the crimping inducing protrusion 144, the scraper 180 is separated from the scraper 180, Is slightly elastically deformed, and it is kneaded while being kneaded, so that the extrusion pressure can be applied, so that the discharge can be smoothly induced.

The pair of elastic plates 184 and the spring 186 are used to return the elastically deformed scraper 180 to its original position as soon as the scraper 180 sweeps the crimp guide protrusion 144 Do.

On the other hand, the float adsorption removal step is performed through the suspended solids adsorbing apparatus 200 illustrated in FIG.

The suspended solids adsorbing apparatus 200 includes an adsorption chamber 210 for receiving negative wastewater discharged from a drain 160, an opening 220 for opening a part of an upper surface of the adsorption chamber 210, A drive roll 230 driven by a motor and disposed in a state of being soaked at a predetermined depth on the water surface of the waste water stored in the drive roll 230, a driven roll 240 horizontally disposed at a distance from the drive roll 230, A tension roll 250 spaced up and down from the roll 240 and a floating member wound on the driving roll 230, the tension roll 250 and the driven roll 240 and rotating in the form of an endless track, An air blower 270 installed between the tension roll 250 and the driven roll 240 for air flushing and separating suspended solids adsorbed on the adsorption belt 260, A float guide 280 for guiding the air flushed suspended matters not to be scattered, And a discharge inducing pipe 290 formed at one end of the discharge pipe for overflowing the waste water.

At this time, the air flusher 270 is a mechanism for jetting air at a high speed, and may have a length corresponding to the width of the adsorption belt 260 and may be installed in multiple rows.

The floating matters including the oil adhering to the adsorption belt 260 by the air flushing of the air flusher 270 are scattered into the floating guide 280 and the floating guide 280 is moved to the floating collection box BOX Collected and post processed.

An inclined block (INC) inclined toward the discharge induction pipe (290) may further be installed on the bottom surface of the adsorption chamber (210) to smooth the flow of the negative wastewater toward the discharge induction pipe (290) And the wall surface opposite to the discharge inducing pipe 290 of the adsorption chamber 210 is formed obliquely for the same reason.

In addition, since the discharge induction pipe 290 is positioned at a predetermined height from the bottom surface of the adsorption chamber 210, the negative wastewater always maintains a predetermined water level, overflows as the water level exceeds the water level, The waste water should be allowed to settle.

This is to increase the adsorption function by the rotation drive of the adsorption belt 260. [

On the other hand, the flocculation step is a step for completely removing floating matters such as residual oil or solid matter which is not adsorbed and removed by injecting coagulant into the wastewater which has been moved to the flocculation tank (not shown).

In order to accelerate the agglomeration reaction, the coagulant is added in an amount of 10% by weight of the cale powder, 5% by weight of the fresh persimmon juice, 25% by weight of the at fructose, 25% by weight of the granular cellulose 15 By weight, 5% by weight of polyacrylamide, and the balance calcium hydroxide.

In this case, the kale powder is obtained by ripening the leaves and roots of kale which is a perennial plant of the poppy tree cabbage and then pulverizing it, and is added to enhance the adsorption power by the abundant fiber and to extinguish harmful substances and to remove odor.

And, the fresh persimmon juice is a plant of the persimmon family, which is extracted from the fresh persimmon which is an herbaceous perennial plant. It is added because it contains a large amount of flavonoid and germanium and is useful for removing toxic substances and reducing odor.

In addition, in the present invention, ataplatite is added for thickening and bulking, but it is added in order to increase the adsorption capacity by using the characteristic of the fibrous structure in the state where the discharge of harmful substances is blocked.

In addition, the granule type cellulose fibers are natural adsorbents, and are added to contribute to toxic and absorptive, environmentally friendly materials, as well as contributing to the removal of odors.

In addition, slaked lime is a representative coagulant and is the most base material.

When the flocculant is added to the flocculation tank and stirred at 50-60 rpm for about 30-40 minutes, aggregation reaction occurs, and solidified materials including residual oil flocculate and small sized lumps are formed.

Thus, when the flocculation reaction is completed, a first sifting step of sifting through the screen and separating the solid solution is performed.

The solid component of the solid-liquid separated from the first sifting step is collected and post-treated, and the first sifted liquid, which is a liquid component, is transferred to the fermenter.

In the fermentation tank, aerobic microorganisms are added to the first constituent water, which is then stored for 2 days.

Then, fermentation by the aerobic microorganisms is started, and during the fermentation, an aeration step is carried out to promote fermentation.

The aeration step is a step for sufficiently removing harmful substances by stirring oxygen at a high pressure of 150 rpm to stabilize fermentation while preventing aerobic microorganisms from being anaerobically dialed and inducing oxidation of organic matter.

This aeration step is continued for 2 days and allowed to stand for one day after aeration to induce sufficient production of fermentation degradation products and oxides.

A second sifting step for separating the fermented solid matter and the oxide produced from the aerated aeration water is performed. The second sifting step is a step for separating the solid solution using a screen as in the first sifting step.

In this way, the sieved second body water is subjected to a purification step in which the water moves to the reaction tank and is purified.

At this time, the purifying step is a step of injecting a purifying agent into the second constituent water stored in the reaction tank to carry out purification and odor removing function.

Therefore, a purifying agent is required to perform such a function. In the present invention, the purifying agent is constituted as follows.

That is, the purifying agent according to the present invention comprises 15 wt% of Thiobacillus ferrooxidans, 2.5 wt% of polyvinyl alcohol, 10 wt% of green tea powder, 5 wt% of sodium benzoate, 5 wt% of prostaglandin 15% by weight of potassium silicate, and the remaining ozone water.

At this time, Thiobacillus ferrooxidans is a representative hydrogen sulfide removing agent, and most of the odor originates from hydrogen sulfide and is added to contribute to minimizing the occurrence of odor by effectively decomposing and removing it.

And, polyvinyl alcohol is added for ion stabilization of the composition.

Green tea powder is a natural powder having the effect of decomposing and eliminating heavy metals such as mercury and lead. In particular, green tea inhibits the growth of bacteria, thereby enhancing environmental friendliness.

In addition, sodium benzoate is a kind of preservative added to prevent discoloration and decay of the second constitutional water.

In addition, prostaglandins are fatty acid derivatives consisting of 20 carbons, which are added to inhibit the growth of bacteria and prevent contamination and to prevent odor generation.

In addition, potassium silicate is added as an inorganic substance, in particular, in order to enhance the ability to inhibit fungi growth and increase the adsorption power, thereby contributing to the removal of odor and harmful substances.

The ozone water is formed by mixing water at a ratio of 1: 5 to ozone generated by an ozone generator which generates ozone by a silent corona discharge method. This ozone water produces OH radicals, , OH ^- will give the most powerful energy, which will sterilize, deodorize, decolorize, heavy metals, and decompose and remove various organic materials to their most safe water and oxygen state.

In other words, the OH radical (hydroxyl group) is a natural substance with excellent ability to decompose, remove and neutralize all the bacterium and pollutants present on the earth naturally and does not leave secondary pollutants.

Thus, when the purification of the second constituent water is completed in the reaction tank, the purified purified water is transferred to the sterilizing tank to perform the sterilization step.

The sterilization step is a step of sterilizing pathogens, bacteria and the like due to the interaction of the ultraviolet lamp installed in the sterilizing tank and the photocatalyst partially coated on the outer surface of the ultraviolet lamp.

That is, it is preferable to induce a photocatalytic oxidation reaction through the interaction of ultraviolet rays emitted from the ultraviolet ray lamp and a photocatalyst such as titanium dioxide to sterilize the ultraviolet rays, and to emit a wavelength band of 253.7 nm, This also leads to direct sterilization (E. coli, P. aeruginosa, bacteria, etc.).

The sterilized water sterilized through these steps is introduced into the evaporator and the evaporation water collection step is performed to collect the evaporated water.

6, the evaporator 300 for performing the evaporation collecting step includes a base table 310 fixed to a mounting surface, an outer tube 320 fixed to an upper surface of the base table 310, An inner tubular body 330 made of an aluminum material which is embedded in the outer tub 320 in a double tubular form and a tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular type tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular body, A plurality of heater cores 350 positioned in the space between the outer cylinder 320 and the inner cylinder 330 and fixed to the outer circumference of the inner cylinder 330 to heat the inner cylinder 330, A drain valve 370 provided on the drain pipe 360 and a drain valve 360 disposed on the inside of the bent portion of the collecting pipe 340 to provide a venturi effect (380) for generating a suction pressure by the fan motor (FMR), and a fan motor And a cooling chamber 390 provided at a bent end of the collecting pipe 340. The blowing fan (FAN)

The sterilization water supply pipe STP for supplying the sterilized water is arranged to spray sterilized water circumferentially along the inner circumferential surface of the inner cylinder 330 through the outer cylinder 320 and the inner cylinder 330, A spray nozzle (not numbered) is mounted at the tip so that it becomes thinner and sprayed.

In addition, the heater core 350 is provided to heat the inner tube 330. Since the inner tube 330 is made of an aluminum material, the thermal conductivity is excellent and the heat of the heater core 350 is transmitted as it is do.

Therefore, the sterilized water circulated on the inner diameter of the inner tube 330 is evaporated in a short time. In the process, the sterilized water is sucked into the collection tube 340 by the suction pressure generated in the collection tube 340, (390), and is converted into trapped water. The trapped water thus collected is recovered and utilized as industrial water or spraying water for road cleaning.

Particularly, since the curved pipe 380 extends to the horizontal part of the collecting pipe 340, the strong wind pressure to which the blowing fan FAN blows is directly transmitted to the cooling chamber 390, Suction pressure is produced on the vertical side of the collecting pipe 340.

Therefore, the evaporated water evaporated by heating is automatically sucked into the collecting pipe 340, which eventually constitutes the collecting water.

Further, in the course of evaporation of the sterilizing water by heating, a small amount of solid content still remaining until then drops down to sludge, which is then opened and recovered after the drain valve 370 is opened.

As described above, the present invention treats the waste wastewater through various stages to remove not only oil and solid components but also odor and decompose and remove harmful components. Therefore, the present invention not only eliminates harmful effects caused by such waste water, It is a useful technology that can be used for water and water storage and can be reused.

100: Dewatering unit
200: Suspension adsorber
300: evaporation collector

Claims (2)

A dehydrating step of dehydrating the pulverized food waste after the collection to separate the waste water; A step of removing suspended solids floating on the water surface by leaving dehydrated waste water; An agglomeration treatment step of agglomerating and removing residual oil and solid content by adding agglomerating agent to agitated wastewater from which suspended matter has been removed; A first sifting step of separating an aggregate and a non-aggregated solid from a liquid; A fermentation step in which an aerobic microorganism is added to the sifted first constitutional water and then allowed to stand and ferment; Aeration step in which oxygen is blown into the fermentation water during fermentation to aerate it; A second sifting step of separating the fermented solid matter and the oxide produced in the aeration-completed aeration water; A purging step of purging the sieved second body water into a reaction tank; A sterilization step of sterilizing the purified water; And sterilizing sterilized water into an evaporation treatment tank to collect evaporated water,
The dewatering step is performed in a dewatering unit 100. The dewatering unit 100 includes a fixed frame 110, a base plate 120 horizontally mounted on the fixed frame 110, A water tub 140 fixed to the upper surface of the perforated pipe 140 at a predetermined interval with a gap therebetween, a tubular perforated cylinder 140 having a double cylinder inside the water receiving cylinder 130, A drainage hole 160 for discharging the dehydrated water discharged from the water storage tank 130 to the bottom of the water storage tank 130 and supplying the food waste shredded into the perforated container 140; A scraper 180 for compressing and dewatering the food waste pulverized and injected while being rotated inside the perforated barrel 140 and a scraper 180 installed on the bottom surface of the water receiving barrel 130; A scraping motor 190 for rotating the scraper 180, A pressurized water discharge pipe 142 provided through the perforated pipe 140 and the water receiving pipe 130 and a pressurized water discharge pipe 142 passing through the pressurized product discharge pipe 142 at a point upstream of the perforated pipe 140 And a compression inducing protrusion 144 protruding in a triangular shape on the inner peripheral surface;
The suspended solids removal process is carried out in the suspension adsorber 200. The suspension adsorber 200 includes an adsorption chamber 210 for receiving the negative wastewater discharged from the discharge port 160, A drive roll 230 disposed in a state of being deposited in a predetermined depth on the water surface of the negative wastewater stored in the adsorption chamber 210 and driven by a motor, A tension roll 250 spaced up and down from the driven roll 240 and a driving roll 230 driven by a tension roll 250 and a driven roll 240 A suction belt 260 in the form of a nonwoven fabric that is wound on the suction belt 260 and adsorbs floating matters floating on the water surface while being wound in an endless track form, An air flusher 270 for air flushing and separating the suspended floats, And prevent the guide float guide 280 that is constituted by a discharge induction pipe 290 to sound is formed at one end of the suction chamber 210, the overflow of waste water;
The evaporation collecting step is performed in the evaporation collector 300. The evaporation collector 300 includes a base table 310 fixed to the installation surface, an outer cylinder 320 fixed to the upper surface of the base table 310, An inner tubular body 330 made of an aluminum material which is embedded in the outer tub 320 in a double tubular form and a tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular type tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular tubular body, A plurality of heater cores 350 positioned in the space between the outer cylinder 320 and the inner cylinder 330 and fixed to the outer circumference of the inner cylinder 330 to heat the inner cylinder 330, A drain valve 370 provided on the drain pipe 360 and a drain valve 360 disposed on the inside of the bent portion of the collecting pipe 340 to provide a venturi effect (380) for generating a suction pressure by a fan motor (FMR) installed on the upper portion of the bending pipe (380) And a cooling chamber 390 provided at a bent end of the collecting tube 340. The sterilized sterilized water sterilized in the sterilization step is supplied to the outer tube 320 and the inner tube 330 Is sprayed so as to rotate in a circumferential direction along an inner diameter of the inner tube (330) through a sterilized water supply pipe (STP) which is piped through.
The method according to claim 1,
Wherein the disinfecting step comprises directly or indirectly sterilizing pathogens and bacteria by an oxidation reaction (photocatalytic oxidation) of an ultraviolet lamp installed in a sterilizing tank and a photocatalyst partially applied to an outer surface of the ultraviolet lamp.

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