KR102527187B1 - Waste organic solvent recycling system - Google Patents

Abstract

The present invention relates to a waste organic solvent recycling system. The present invention includes a waste storage tank, a fractional distillation facility unit, an acidity adjustment facility unit, a primary wastewater storage unit, a low boiling point recycled raw material storage unit, a high boiling point recycled raw material storage unit, a product preparation facility unit, a secondary wastewater storage unit, a secondary fractionation extraction unit, an evaporation concentration facility unit, a salt removal facility unit, a tertiary wastewater storage unit, a cooling water storage tank, a groundwater pump, a cooling pipe, a groundwater supply pipe, a partition wall, a sediment discharge pipe, and a discharge pipe cover. The present invention can remove foul odors.

Description

Waste organic solvent recycling system {WASTE ORGANIC SOLVENT RECYCLING SYSTEM}

The present invention relates to a waste organic solvent regeneration system, and more particularly, to a waste organic solvent regeneration system having good regeneration efficiency by repeatedly separating an organic solvent in water.

Various types of waste oil, waste organic solvents, waste paint, or waste lacquer generated in industrial sites, vehicle repair shops, factories, or construction sites are representative environmental pollutants that cause environmental pollution.

For example, waste paint, which is an organic solvent paint for automobiles, is extremely difficult to recycle, and only the solvent contained in the paint is recovered and the rest is incinerated according to the related waste treatment laws. This incineration process, aside from waste of resources, causes serious air pollution.

Accordingly, by riding on the development of chemical-related technologies, various technologies for appropriately treating the waste liquid have been developed and proposed.

The treatment techniques described above also include regeneration of the waste liquid. Regeneration of waste liquid provides the effect of both the recycling of resources and the lowering of the environmental load.

There are various types of waste oil regeneration methods, such as pyrolytic refining and ion refining. The pyrolytic refining method is a method of heating waste oil to separate the dregs from constituent components. However, the pyrolytic refining method has the disadvantage of causing environmental pollution by generating wastes such as chlorine gas, tar, and coke. The ion refining method is a method of reacting foreign substances such as heavy metals contained in waste oil with anionic chemicals to create metal salts and physically separating them. However, since the product contains a lot of ash, reuse is limited.

In addition, Korean Registered Patent Publication No. 10-0592856 discloses a regeneration technology through inorganic ceramic catalyst treatment by collecting waste oil, waste lubricant oil, or various waste light oils, which are designated wastes, by item and property. There is a limiting condition that the waste oil used must have low viscosity, and the process time is long, so the regeneration efficiency is not good.

In addition, Korean Patent Registration No. 10-2202494 discloses a technique for obtaining a regenerated organic solvent by separating the waste organic solvent into wastewater and gas, but the technique for obtaining the regenerated organic solvent is to separate the wastewater from the waste organic solvent by boiling point. Problems in that recycling efficiency is not good because there is no separation, a lot of odor is generated, polluting the working environment, low acidity (PH) lowers the quality of the recycled organic solvent, and salt is included, which lowers the quality of the recycled organic solvent. there is

In addition, Korean Patent Publication No. 10-1936548 uses a geothermal cooling unit for cooling waste liquid regeneration as a waste liquid recycling device. If clogged, it cannot be repaired or inspected, and it causes secondary contamination of groundwater.

Republic of Korea Patent Registration No. 10-0592856 (Announced on June 23, 2006) Republic of Korea Patent Registration No. 10-2202494 (2021.01.12 notice) Republic of Korea Patent Registration No. 10-1936548 (2019.01.08 announcement)

An object of the present invention is to solve the conventional problems as described above, and to provide a waste organic solvent recycling system that increases recycling efficiency and reduces recycling costs by separating and treating waste organic solvent wastewater by boiling point. is to do

Another object of the present invention is to provide a waste organic solvent recycling system capable of removing odors contained in the waste organic solvent during recycling of the waste organic solvent.

Another object of the present invention is to provide a waste organic solvent regeneration system that adjusts the acidity to an acidity suitable for the regenerated organic solvent during regeneration of the waste organic solvent.

Another object of the present invention is to provide a waste organic solvent regeneration system capable of removing salts contained in the waste organic solvent.

Another object of the present invention is to provide a waste organic solvent recovery system, which makes it easy to repair the geothermal device from contamination of groundwater and facilitates cleaning of the geothermal device when geothermal heat is used to cool the waste organic solvent. .

As a means for achieving the above object, the configuration of the present invention includes a waste storage tank for accommodating the waste organic solvent collected by the waste organic solvent collection vehicle; a fractional distillation facility for receiving wastewater from the waste storage tank and distilling the wastewater among the waste organic solvents in a vacuum and separating the wastewater into high boiling point wastewater and low boiling point wastewater based on a first set boiling point; An acidity adjustment facility unit receiving the high boiling point wastewater from the fractional distillation facility unit and adjusting acidity by including caustic soda and hydrochloric acid; a primary wastewater storage unit for receiving and storing the high boiling point wastewater whose acidity is adjusted from the acidity adjustment unit; a low boiling point recycled raw material storage unit for receiving and storing the low boiling point wastewater from the fractional distillation facility unit; a high boiling point recycled raw material storage unit for receiving and storing the high boiling point wastewater supplied from the fractional distillation facility unit; a product dispensing facility unit receiving and stirring the high boiling point wastewater and the low boiling point wastewater to form a recycled organic solvent; a secondary wastewater storage unit receiving and storing the high boiling point wastewater whose acidity is adjusted from the primary wastewater storage unit; The high boiling point wastewater whose acidity is adjusted is supplied from the secondary wastewater storage unit and vacuum distilled with heating in a state of agitation to re-separate into secondary high boiling point wastewater and secondary low boiling point wastewater based on the first set boiling point, a second fractional extraction unit for storing the classified secondary high boiling point wastewater in the high boiling point recycling raw material storage unit and cooling the secondary low boiling point wastewater and storing it in the low boiling point recycling raw material storage unit; The wastewater supplied from the secondary wastewater storage unit is evaporated and concentrated to separate high boiling point wastewater and high salinity wastewater based on the second set boiling point (set higher than the first set boiling point), and the separated high boiling point wastewater to the high boiling point An evaporation and concentration facility unit for supplying and storing point recycled raw material storage unit; a salt removal facility unit receiving the high-salinity wastewater from the second fractional extraction unit and removing salt contained in the high-salinity wastewater; a tertiary wastewater storage unit receiving and storing the wastewater from which the salt has been removed from the salt removal facility unit; A cooling water storage tank that stores groundwater, has a groundwater inlet hole penetrating the upper surface and a groundwater outlet hole penetrating the side surface; a groundwater pump pumping and supplying groundwater to the cooling water storage tank; A cooling pipe installed inside the cooling water storage tank to allow the cooling liquid to flow between the condenser of the fractional distillation facility and the condenser of the evaporation and concentration facility; a groundwater supply pipe installed in communication with the cooling water storage tank from top to bottom and connected to the groundwater pump to supply groundwater supplied from the groundwater pump; It is installed inside the cooling water storage tank and is formed to block between the cooling pipe and the ground water supply pipe to form an inlet ground water disposition space in which the cooling pipe is disposed and a cooling ground water disposition space in which the cooling pipe is disposed, and a partial upper region is a side surface. A bulkhead through which a groundwater flow hole is formed; a sediment discharge pipe inserted into a side surface of the cooling water storage tank and communicated with the inlet groundwater dispensing space and installed at a position lower than the lowermost part of the groundwater supply pipe; And, a discharge pipe cover detachably coupled to the end of the sediment discharge pipe located outside the cooling water storage tank; It is preferable if it is made including.

The configuration of the present invention is disposed inside the inlet groundwater arrangement space, a sediment receiving area with a concave upper surface is formed, support areas are formed on both sides, and when the discharge pipe cover is opened, it flows to the outside of the cooling water storage tank through the sediment discharge pipe. It is preferable if it is made by further comprising a sediment collecting plate that moves and allows the sediment to be cleaned from the outside of the cooling water storage tank.

The present invention has the effect of increasing regeneration efficiency and reducing regeneration costs by separating and treating wastewater from waste organic solvents according to boiling points.

In addition, the present invention has an effect of removing odor contained in the waste organic solvent when regenerating the waste organic solvent.

In addition, the present invention has an effect of adjusting the acidity to an acidity suitable for the recycled organic solvent when regenerating the waste organic solvent.

In addition, the present invention has the effect of allowing salts contained in the waste organic solvent to be removed.

In addition, when the geothermal heat is used to cool the waste organic solvent, the present invention has an effect of easily repairing the geothermal device to prevent contamination of groundwater and to facilitate cleaning of the geothermal device.

1 is a block diagram of a waste organic solvent recycling system according to an embodiment of the present invention.
FIG. 2 is an enlarged side cross-sectional view of the cooling water storage tank shown in FIG. 1 .
FIG. 3 is a partial cross-sectional view of the sediment collector plate shown in FIG. 2 viewed from the front.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to explain in detail enough that a person skilled in the art to which this invention pertains can easily practice this invention. Other objects, features, and operational advantages, including the object, action, and effect of this invention, will become clearer by the description of the preferred embodiment.

For reference, the embodiments disclosed herein are only presented by selecting the most preferred embodiments to help those skilled in the art to understand among various possible examples, and the technical spirit of the present invention is not necessarily limited or limited only by the presented embodiments. Instead, various changes, additions, and modifications including equivalents or substitutes are possible within the scope of the technical spirit of the present invention.

In addition, the expression of terms or words used in the specification and claims of the present application are defined based on the principle that the inventor can appropriately define the concept of terms in order to best explain his or her invention. , It should not be construed as limited to ordinary or dictionary meanings, but should be interpreted as meanings and concepts consistent with the technical spirit of the present invention. As an example, a singular expression includes a plurality of expressions unless the context clearly indicates otherwise, and an expression related to a direction is set based on a position shown on the drawing for convenience of explanation, and is “connected” or “connected”. The expression "to be" includes not only a direct connection or connection, but also a connection or connection through another component in the middle. In addition, the expression "~ unit" includes a unit realized using hardware, a unit realized using software, a unit realized using both hardware and software, and the like, and one unit includes one or more pieces of hardware or software. may be realized using , and two or more units may be realized using one hardware or software.

1 is a block diagram of a waste organic solvent regeneration system according to an embodiment of the present invention, FIG. 2 is an enlarged side cross-sectional view of the cooling water storage tank shown in FIG. 1, and FIG. 3 is a sediment collector plate shown in FIG. A partial cross-sectional view of the front view.

As shown in FIGS. 1 to 3, the waste organic solvent regeneration system according to an embodiment of the present invention includes a waste storage tank (1), a fractional distillation facility (2), an acidity adjustment facility (4), and primary wastewater Storage unit 5, low boiling point recycled raw material storage unit 6, high boiling point recycled raw material storage unit 7, product dispensing facility unit 8, secondary wastewater storage unit 9, secondary fractionation extraction unit 10, It includes an evaporation and concentration facility unit 11, a salt removal facility unit 12, a tertiary wastewater storage unit 13, and an odor removal processing unit 14.

Prior to describing the configuration of each of the present embodiments, the lines connecting each of the components shown in the drawings are all pipelines, and wastewater or gas is transported as shown in the drawings, and a detailed description thereof will be omitted. It will be replaced with the connection line of the drawing for the pipelines connecting each component. In addition, the pump shown in the drawing is connected to the components to transport wastewater, and the description of the pump will be omitted and replaced with symbols. In addition, in this embodiment, a steam boiler is used as a means for condensation or heating, and a cooling means for condensation uses a chiller refrigeration system (not shown), a cooling tower (not shown), and geothermal cooling using groundwater. and redundant description thereof will be omitted.

The waste storage tank 1 accommodates a mixture of wastewater and waste organic solvent collected by the waste organic solvent collection vehicle 1a. In this case, the waste storage tank 1 has a gas outlet (not shown) for discharging gas, so that the gas in the waste storage tank 1 is discharged to the outside.

The fractional distillation facility unit 2 receives wastewater from the waste storage tank 1, receives the wastewater among the waste organic solvents, distills it in a vacuum, and separates the wastewater into high boiling point wastewater and low boiling point wastewater based on a first set boiling point. In the present invention, wastewater having a boiling point lower than the first set boiling point is referred to as low boiling point wastewater, and wastewater having a boiling point higher than the first set boiling point is referred to as high boiling point wastewater.

In the case of the present embodiment, the fractional distillation facility unit 2 includes an agitation tank 2a for receiving and receiving wastewater from the waste storage tank 1, an agitator 2b installed in the agitation tank 2a to agitate the wastewater, and the agitator ( 2b) An example of a preheater (2c) that is installed outside, receives wastewater in the agitator (2b), preheats it, and then resupplies it to the agitation tank (2a), cools the heated steam in the agitation tank (2a) and condenses it into low boiling point wastewater The low boiling point wastewater auxiliary tank unit 2e for receiving and storing the low boiling point wastewater condensed from the seolgi 2d and the preseolgigi 2d and transporting it to the low boiling point recycling raw material storage unit 6, and the high boiling point in the agitation tank 2a It includes a high boiling point transfer pump (2f) for receiving wastewater and transferring it to the high boiling point recycling raw material storage unit (7).

In such a fractional distillation facility unit 2, the wastewater in the stirring tank 2a is preheated to a set boiling point with the preheater 2c to vaporize the vaporized components in the wastewater of the waste organic solvent, and the vaporized gas components to the preheater 2d. It is condensed and condensed into low boiling point wastewater. In this case, the high boiling point wastewater remaining in the agitation tank 2a is pumped by a pump and transported to the high boiling point recycled raw material storage unit 7 and stored therein. In this case, a boiling point measuring unit 2g is installed in parallel to the output pipeline of the high boiling point transfer pump 2f of the fractional distillation facility unit 2 to continuously detect the boiling point, and the detected value of the boiling point measuring unit 2g is set. Only when the high boiling point exceeds the boiling point, the automatic valve is opened so that the high boiling point wastewater in the fractionation distillation facility 2 is stored in the high boiling point recycled raw material storage unit 7, thereby classifying the high boiling point wastewater. In this way, the fractional distillation facility 2 can separate high boiling point wastewater and low boiling point wastewater.

The acidity adjustment unit 4 receives liquid high boiling point wastewater from the fractional distillation unit 2 and adjusts the acidity by including caustic soda and hydrochloric acid. Accordingly, the acidity of a part of the high boiling point wastewater classified in the fractional distillation facility unit 2 is adjusted to match the regeneration acidity. In this case, a vaporization absorption plate is installed on the upper part of the acidity adjustment facility unit 4, and the gas contained in the waste storage tank 1 is absorbed through the gas line to adjust the acidity of the gas components contained in the gas line to match the acidity of regeneration. will be regulated.

The primary wastewater storage unit 5 receives and stores the high boiling point wastewater whose acidity is adjusted from the acidity adjustment facility unit 4 . In addition, the primary wastewater storage unit 5 is connected to a gas line to regenerate the gas contained in the acidity-controlled high boiling point wastewater, thereby increasing the regeneration rate.

The low boiling point recycled raw material storage unit 6 receives and stores the low boiling point wastewater from the fractional distillation facility unit 2. In this case, the low boiling point renewable raw material storage unit 6 is used for storing low boiling point wastewater concentrated by the evaporation and concentration facility unit 11 to be described later. In addition, the low boiling point recycling raw material storage unit 6 is connected to a gas line so that the gas contained in the low boiling point wastewater is regenerated to increase the regeneration rate.

The high boiling point recycled raw material storage unit 7 receives and stores liquid high boiling point wastewater from the fractional distillation facility unit 2 . In this case, the high boiling point recycling raw material storage unit 7 stores the high boiling point wastewater separated by the evaporation and concentration facility unit 11. In addition, the high boiling point recycling raw material storage unit 7 is connected to a gas line so that the gas contained in the high boiling point wastewater is regenerated to increase the regeneration rate.

The product dispensing facility unit 8 receives low boiling point wastewater from the low boiling point recycled raw material storage unit 6 and receives high boiling point wastewater from the high boiling point recycled raw material storage unit 7 and stirs them to form a recycled organic solvent. At this time, the organic solvent stirred by the product dispensing facility 8 is recycled and resold.

The secondary wastewater storage unit 9 receives and stores the high boiling point wastewater whose acidity is adjusted from the primary wastewater storage unit 5 . In addition, the secondary wastewater storage unit 9 is connected to a gas line to regenerate the gas contained in the acidity-controlled high boiling point wastewater, thereby increasing the regeneration rate.

The secondary fractionation extraction unit 10 receives the high boiling point wastewater whose acidity is adjusted from the secondary wastewater storage unit 9 and vacuum distills it by heating it to the first set boiling point in a state of stirring to obtain high boiling point wastewater and low boiling point wastewater. It is re-classified again, and the re-classified secondary high boiling point wastewater is stored in the high boiling point recycling raw material storage unit 7, and the reclassified secondary low boiling point wastewater is cooled and stored in the low boiling point recycling raw material storage unit 6.

In this case, the secondary fractionation extraction unit 10 circulates and vaporizes the wastewater by an evaporator using steam, and allows the vaporized wastewater to be re-introduced into the tank through a vacuum pump, but connecting a plurality of tanks and steam in parallel to By increasing the purity of evaporation, it is classified into secondary high boiling point wastewater and secondary low boiling point wastewater. In this way, the secondary fractionation extraction unit 10 secondly separates the high boiling point wastewater and the low boiling point wastewater, thereby separating the low boiling point wastewater contained in the high boiling point wastewater whose acidity is controlled and remaining without being separated in the first step. there will be

The evaporation and concentration facility unit 11 receives the high boiling point wastewater whose acidity is adjusted from the secondary wastewater storage unit 9 and separates the high boiling point wastewater and the high salinity wastewater based on the second set boiling point by evaporation and concentration. Since the second set boiling point is set higher than the first set boiling point, the high boiling point wastewater having a boiling point higher than the first set boiling point but lower than the second set boiling point is evaporated, and the liquid state is maintained because the boiling point is higher than the second set boiling point. It is divided into high-salinity wastewater.

The acidity-adjusted high boiling point wastewater supplied from the secondary wastewater storage unit 9 is a state in which low boiling point wastewater has been classified by the fractional distillation facility unit 2, from which the boiling point is higher than the first set boiling point but the second set boiling point High-boiling point wastewater is classified, and the remaining liquid wastewater becomes high-salinity. Therefore, in the present invention, wastewater having a boiling point higher than the second set boiling point is referred to as high-salinity wastewater.

The evaporation and concentration facility unit 11 supplies the separated high boiling point wastewater to the high boiling point renewable raw material storage unit 7 for storage, and supplies high salinity wastewater to the salt removal facility unit 12 for storage. In this case, the evaporation and concentration facility unit 11 detects the boiling point of the high boiling point wastewater with a boiling point measurement unit and controls an automatic valve so that only high salt wastewater higher than the second set boiling point is supplied to the salt removal facility unit 12 to separate the high salt wastewater. do.

The salt removal facility unit 12 receives the high-salinity wastewater from the evaporation and concentration facility unit 11 and removes salt contained in the high-salinity wastewater. The salt removal facility unit 12 may be implemented in various ways, such as heating wastewater and then distilling the heated wastewater through a reverse osmosis membrane or removing salt through a filter. In this case, the vaporized wastewater after being filtered by the salt removal facility unit 12 is liquefied through a condenser and then transferred to the high boiling point recycling raw material storage unit 7. Here, a salt discharge tank (not shown) is installed in the salt removal facility unit 12 to periodically remove the filtered salt. In this way, the salt removal facility unit 12 removes the salt of the high-salinity wastewater, so that the wastewater containing salt is recycled, thereby increasing the reuse rate of the waste organic solvent.

The tertiary wastewater storage unit 13 receives and stores salt-free wastewater from the salt removal facility unit 12, but stores a surplus when the storage capacity of the high boiling point recycling raw material storage unit 7 is exceeded. The tertiary wastewater storage unit 13 stores a surplus so that the high boiling point wastewater exceeding the capacity of the high boiling point recycling raw material storage unit 7 can be consigned, so that it is easy when the recycled organic solvent exceeds the storage limit. be able to cope with

The odor removal processing unit 14 includes a waste storage tank 1, a fractional distillation facility unit 2, an acidity adjustment facility unit 4, a primary wastewater storage unit 5, a low boiling point recycled raw material storage unit 6, and a high boiling point recycled raw material storage unit. unit (7), product preparation facility unit (8), secondary wastewater storage unit (9), evaporation and concentration unit (11), secondary fractional extraction unit (10), salt removal facility unit (12), and tertiary wastewater storage unit (13) is connected. The odor removal processing unit 14 includes a waste storage tank 1, a fractional distillation facility unit 2, a low boiling point wastewater transfer tank unit 3, an acidity adjustment facility unit 4, a primary wastewater storage unit 5, and a low boiling point recycled raw material. Storage unit (6), high boiling point recycled raw material storage unit (7), product preparation facility unit (8), secondary wastewater storage unit (9), evaporation and concentration unit (11), secondary fractionation extraction unit (10), salt removal In each of the facility unit 12 and the tertiary wastewater storage unit 13, the gas containing the odor is condensed and discharged. In this case, the odor removal processing unit 14 includes a condenser for condensing gas to remove odor, a transfer tank for transferring the condenser, a transfer pump for transferring condensed water in the transfer tank, and a condensate for storing, compressing and storing condensed water. It may include a compression storage unit and an active plate connected to the compression storage unit to remove odors contained in the compressed condensed water. In this way, the odor removal processing unit 14 removes the odor contained in the gas, thereby improving the quality of the recycled organic solvent and improving the environment related to odor pollution around the workplace.

Meanwhile, the waste organic solvent regeneration system according to an embodiment of the present invention includes a cooling water storage tank 15, a ground water pump 16, a cooling pipe 17, a ground water supply pipe 18, a partition wall 19, and a sediment discharge pipe 20. , A discharge pipe cover 21, and a sediment collecting plate 22 are further included.

The cooling water storage tank 15 is formed in a tubular shape to store groundwater, has a groundwater inlet hole 15a into which the groundwater supply pipe 18 is inserted through the top surface, and a groundwater discharge pipe 15c through the side surface. An underground water outflow hole 15b is formed. The cooling water storage tank 15 serves to store groundwater supplied through the groundwater pump 16. Here, the groundwater stored in the cooling water storage tank 15 is accommodated in the inlet groundwater disposing space 19a and the cooling groundwater disposing space 19b, respectively. In the case of this embodiment, the cooling water storage tank 15 is installed on the ground and operated to remove internal sediment. In addition, the groundwater discharge pipe 15c is connected through a tube well (not shown) connected to the groundwater vein to discharge groundwater. In this case, since the groundwater discharged through the groundwater discharge pipe 15c is not mixed with other components, it does not contaminate the groundwater.

The groundwater pump 16 pumps and supplies groundwater to the cooling water storage tank 15 . In this case, the groundwater pump 16 is connected to the water level control sensor 16a installed inside the cooling water storage tank 15, and when the groundwater exceeds the standard level, the drive is stopped to stop the supply of groundwater, and when the level is below the standard level, It is driven so that groundwater is supplied to the inlet groundwater disposition space 19a. Here, groundwater pumped by the groundwater pump 16 is supplied through an underwater pipe buried underground, and a temperature of about 15° C. is used throughout the year.

The cooling pipe 17 is inserted inside the cooling water storage tank 15 and installed so that the cooling liquid flows to the condenser of the fractional distillation facility unit 2 and the condenser of the evaporation and concentration facility unit 11. In addition, the cooling pipe 17 is connected to the condenser of the salt removal facility unit 12 and the condenser of the odor removal processing unit 14 to allow the cooling liquid to flow. In such a cooling pipe 17, the cooling liquid flowing inside the cooling pipe 17 is cooled by groundwater located inside the cooling water storage tank 15, and the cooling liquid of the cooled cooling pipe 17 is supplied to each condenser to cool. will proceed

The ground water supply pipe 18 is installed to communicate with the cooling water storage tank 15 from the top to the bottom, and is connected to the ground water pump 16 to supply ground water to the inlet ground water disposing space 19a. In this case, the groundwater supply pipe 18 is disposed at a position lower than the middle height of the cooling water storage tank 15 and higher than the lower surface of the cooling water storage tank 15, so that the sediment contained in the first groundwater flows over to the cooling groundwater disposing space 19b. prevent it from going.

The bulkhead 19 is installed inside the cooling water storage tank 15 and is formed to block the gap between the cooling pipe 17 and the ground water supply pipe 18, and the cooling pipe 17 is disposed in the inlet ground water disposing space 19a and the cooling pipe A cooling groundwater disposing space 19b in which 17 is disposed is formed, and a part of the upper area penetrates to the side to form a groundwater flow hole 19c. The bulkhead 19 is such that groundwater in which sediment may be generated among the groundwater flowing into the cooling water storage tank 15 is disposed in the inlet groundwater arrangement space 19a, but only groundwater with little sediment is disposed in the cooling groundwater arrangement space. By dividing the space so that it flows into (19b), the sediment is arranged on the side of the inflow groundwater disposition space (19a). Meanwhile, the groundwater flow hole 19c formed in the partition wall 19 is disposed at a higher position than the groundwater inlet hole 15a of the cooling groundwater arrangement space 19b so that the groundwater flows in one direction. Therefore, the reverse flow of the groundwater present inside the cooling groundwater arranging space 19b is prevented, thereby preventing a situation in which sediment inside the inlet groundwater arranging space 19a floats and overflows toward the cooling groundwater arranging space 19b.

The sediment discharge pipe 20 is inserted into the side of the cooling water storage tank 15 and is formed to communicate with the inlet groundwater disposing space 19a, and is installed at a position lower than the lowermost part of the groundwater supply pipe 18. The sediment discharge pipe 20 is used as an outflow passage when the sediment 1d remaining in the lower portion of the inlet groundwater disposing space 19a is removed.

The discharge pipe cover 21 is detachably coupled to an end located outside the cooling water storage tank 15 among both ends of the sediment discharge pipe 20. Such a discharge pipe cover 21 normally blocks the sediment discharge pipe 20 to prevent groundwater existing in the inflow groundwater arrangement space 19a from being discharged to the outside, and when cleaning of the sediment 1d is required, the sediment discharge pipe 20 ) and is used for the purpose of removing the sediment (1d) in the inflow groundwater arrangement space (19a).

The sediment collection plate 22 is disposed inside the inflow groundwater arrangement space 19a, has a concave upper surface of the sediment receiving area 22a, has support areas 22b formed on both sides, and the discharge pipe cover 21 is opened. In this case, it moves to the outside of the cooling water storage tank 15 through the sediment discharge pipe 20 so that the sediment can be cleaned from the outside of the cooling water storage tank 15. The sediment collecting plate 22 as described above allows the sediment 1d existing in the inflowing groundwater inner space to be collected and precipitated in the sediment receiving area, and cleaning the inside of the inflowing groundwater disposing space 19a is required so that the discharge pipe cover 21 is removed from the sediment. When the discharge pipe 20 is opened, the sediment discharge pipe 20 escapes to the outside so that the sediment 1d is discharged at once, thereby increasing the efficiency of cleaning and management.

Here, the flow of groundwater stored in the cooling water storage tank 15 will be further described. The groundwater stored in the cooling water storage tank 15 is pumped by the groundwater pump 16 and introduced through the groundwater supply pipe 18 to the groundwater placement space 19a. ), and the inflowed groundwater flows into the cooling groundwater arrangement space 19b through the groundwater flow hole 19c. In this case, the groundwater introduced into the cooling groundwater arrangement space 19b flows through the groundwater outflow hole 15b. When the water level exceeds , the groundwater is discharged to the outside through the outflow hole 15b, and at this time, the cooling pipe 17 is continuously cooled by the groundwater in the inlet groundwater disposing space 19a.

On the other hand, groundwater in the cooling groundwater arrangement space 19b may introduce sediment such as soil when groundwater flows in. In this case, the sediment 1d is collected and accumulated on the sediment collector plate 22, and cleaning is required. After the discharge pipe cover 21 is separated from the sediment discharge pipe 20, the sediment collection plate is moved to the outside of the sediment discharge pipe 20 to be cleaned, so that the sediment in the groundwater can be removed at once, so the sediment introduced into the groundwater so that it can be easily removed.

1: waste storage tank 2: fractional distillation facility
2a: Agitation tank 2b: Agitator
2c: Preheater 2d: Preheater
2e: low boiling point wastewater auxiliary tank unit 4: acidity adjustment facility unit
5: primary wastewater storage unit 6: low boiling point renewable raw material storage unit
7: high boiling point recycled raw material storage unit 8: product dispensing facility unit
9: secondary wastewater storage unit 10; 2nd differential extraction unit
11: Evaporation Concentration Facility 12: Salt Removal Facility
13: tertiary wastewater storage unit 14: odor removal processing unit
15: cooling water storage tank 16: groundwater pump
17: cooling pipe 18: underground water supply pipe
19: bulkhead 20: sediment discharge pipe
21: discharge pipe cover 22: sediment accumulation plate

Claims (2)

a waste storage tank accommodating the organic waste solvent collected by the waste organic solvent collection vehicle;
a fractional distillation facility for receiving wastewater from the waste storage tank and distilling the wastewater among the waste organic solvents in a vacuum and separating the wastewater into high boiling point wastewater and low boiling point wastewater based on a first set boiling point;
An acidity adjustment facility unit receiving the high boiling point wastewater from the fractional distillation facility unit and adjusting acidity by including caustic soda and hydrochloric acid;
a primary wastewater storage unit for receiving and storing the high boiling point wastewater whose acidity is adjusted from the acidity adjustment unit;
a low boiling point recycled raw material storage unit for receiving and storing the low boiling point wastewater from the fractional distillation facility unit;
a high boiling point recycled raw material storage unit for receiving and storing the high boiling point wastewater supplied from the fractional distillation facility unit;
a product dispensing facility unit receiving and stirring the high boiling point wastewater and the low boiling point wastewater to form a recycled organic solvent;
a secondary wastewater storage unit receiving and storing the high boiling point wastewater whose acidity is adjusted from the primary wastewater storage unit;
The high boiling point wastewater whose acidity is adjusted is supplied from the secondary wastewater storage unit and vacuum distilled with heating in a state of agitation to re-separate into secondary high boiling point wastewater and secondary low boiling point wastewater based on the first set boiling point, a second fractional extraction unit for storing the classified secondary high boiling point wastewater in the high boiling point recycling raw material storage unit and cooling the secondary low boiling point wastewater and storing it in the low boiling point recycling raw material storage unit;
The wastewater supplied from the secondary wastewater storage unit is evaporated and concentrated to separate high boiling point wastewater and high salinity wastewater based on the second set boiling point (set higher than the first set boiling point), and the separated high boiling point wastewater to the high boiling point An evaporation and concentration facility unit for supplying and storing point recycled raw material storage units;
a salt removal facility unit receiving the high-salinity wastewater from the second fractional extraction unit and removing salt contained in the high-salinity wastewater;
a tertiary wastewater storage unit receiving and storing the wastewater from which the salt has been removed from the salt removal facility unit;
A cooling water storage tank that stores groundwater, has a groundwater inlet hole penetrating the upper surface and a groundwater outlet hole penetrating the side surface;
a groundwater pump pumping and supplying groundwater to the cooling water storage tank;
A cooling pipe installed inside the cooling water storage tank to allow the cooling liquid to flow between the condenser of the fractional distillation facility and the condenser of the evaporation and concentration facility;
a groundwater supply pipe installed in communication with the cooling water storage tank from top to bottom and connected to the groundwater pump to supply groundwater supplied from the groundwater pump;
It is installed inside the cooling water storage tank and is formed to block between the cooling pipe and the ground water supply pipe to form an inlet ground water disposition space in which the cooling pipe is disposed and a cooling ground water disposition space in which the cooling pipe is disposed, and a part of the upper region is a side surface. A bulkhead through which a groundwater flow hole is formed;
a sediment discharge pipe inserted into a side surface of the cooling water storage tank and communicated with the inlet groundwater arrangement space and installed at a position lower than the lowermost part of the groundwater supply pipe; and,
a discharge pipe cover detachably coupled to an end of the sediment discharge pipe located outside the cooling water storage tank; A waste organic solvent regeneration system comprising a. According to claim 1,
When a sediment receiving area disposed inside the inflow groundwater arrangement space and having a concave upper surface is formed, support areas are formed on both sides, and the discharge pipe cover is opened, the sediment is moved to the outside of the cooling water storage tank through the sediment discharge pipe and the cooling water is disposed therein. Sediment collecting plate that allows cleaning from the outside of the reservoir; Waste organic solvent regeneration system, characterized in that further comprising.

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