KR101721936B1

KR101721936B1 - Separating method for polyvinylbutyral and glass of waste glass plate using treating waste water

Info

Publication number: KR101721936B1
Application number: KR1020150146942A
Authority: KR
Inventors: 백병욱
Original assignee: (주) 엔피에코텍스
Priority date: 2015-10-21
Filing date: 2015-10-21
Publication date: 2017-04-03

Abstract

The present invention relates to a method for separating PVB and glass from waste reinforced glass for automobiles and architectures using waste water free circulation method. The present invention relates to a rapid precipitation method of a process for recycling wastewater generated in a glass processing process and a method of using a specific gravity of a raw material and a rotational force of a stirrer In order to separate the waste PVB and the waste glass from each other by using the method of separating the two materials and to use the wastewater generated in the process as waste, (S 1); A quantitative supply step (S2) of supplying the powder and discharging the powder in a fixed quantity; The powder and water are supplied to the helical swash plate 33, and the powder and water are pushed outward while being stirred using the rotational force of the propeller-type impeller 32. The helical swash plate 33, which is installed on the outer side of the impeller 32, PVB and glass separation step (S3) in which water containing water is lowered by water surface area load and gravity, and PVB containing water is raised by rotational force and ascending flow; PVB containing water raised and raised by the spiral type swash plate 33 is supplied to separate water and PVB into a screen net 40 and dewatered by a dehydrator 43 to obtain a recycled PVB, A recycled PVB filtered by the microfilter 50 and transported and stored in the storage tank 80, and a reclaimed water collecting step S4; The water is supplied to the second microfilter 70 through the second microfilter 70. The second microfilter 70 receives the water containing the water that has been lowered by the helical swash plate 33 , (S5), which is filtered and stored in the storage tank (80), and a recycled glass and recycled water collection step (S5).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for separating PVB and glass from waste reinforced glass for automobiles and architectures using a waste water-

More particularly, the present invention relates to a rapid precipitation method for the recycling of wastewater generated during the glass processing process, and a method for rapid precipitation of raw materials, By using the rotating force of the agitator, it is possible to separate the PVB and the glass from the waste-tempered glass by mixing the two materials, reusing it as a raw material, and reusing the wastewater generated in the process in a non-circulating manner. The present invention relates to PVB and glass separation methods for automotive and construction waste reinforced glass.

In general, wastewater generated in the glass processing (polishing) process can be separated by using aluminum or silicon-based inorganic salt as a coagulant, and it is possible to secure the quality of water recycled entirely through the water filtration system, It can be recycled.

However, PVB and glass can not be separated easily because PVB and glass are precipitated at the same time in PVB (polyvinylbutyral), glass, and water mixture as in the case of automobile and construction waste reinforced glass. This is because the specific gravity of PVB is 1.07 ~ 1.2kg / ℓ higher than water, and sedimentation occurs because of high water surface area load despite rising water flow.

In this case, PVB and glass having different specific gravity can be separated by using the rotational force of the spiral stirrer. However, since the water surface area is too low and turbulent flow occurs, PVB separated from the upper part contains a large amount of glass fine particles, PVB was contained in a large amount.

In addition, since the separation efficiency is further lowered when the fine grinding is performed, it is necessary to perform a pretreatment (grinding) of 5 mm or more. In this case, there is a problem that the glass is attached to the PVB as it is.

In addition, there is a chemical method using a solvent to separate the PVB and glass, but it takes an excessive amount of time to separate the treatment of the VOC material from the solvent and the PVB and the solvent, and in a general method of separating using water or brine A large amount of wastewater and wastes are generated and the economy is lowered.

Accordingly, the present applicant has proposed a method of simultaneously separating three components including PVB, glass and water as in the case of automobile and construction waste reinforced glass, and reusing and recycling all three separated components .

Published Patent No. 10-2010-0122399 Registration Utility Model No. 20-0321434

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a rapid precipitation method of a process for recycling wastewater generated during a glass processing process and a method of separating two materials by using the specific gravity of the raw material and the rotational force of the stirrer PVB and glass separation method of waste reinforced glass for automobiles and architectural use by using wastewater free circulation method which enables PVB and glass to be separated from waste reinforced glass and reused as raw material and reuse waste water generated in the process The technical point of view was completed.

According to an aspect of the present invention, there is provided a powder grinding step (S1) of pulverizing waste reinforced glass containing PVB and glass into powders of 2 mm or less; A quantitative supply step (S2) of supplying the powder and discharging the powder in a fixed quantity; The powder and water are supplied to the helical swash plate 33, and the powder and water are pushed outward while being stirred using the rotational force of the propeller-type impeller 32. The helical swash plate 33, which is installed on the outer side of the impeller 32, PVB and glass separation step (S3) in which water containing water is lowered by water surface area load and gravity, and PVB containing water is raised by rotational force and ascending flow; PVB containing water raised and raised by the spiral type swash plate 33 is supplied to separate water and PVB into a screen net 40 and dewatered by a dehydrator 43 to obtain a recycled PVB, A recycled PVB filtered by the microfilter 50 and transported and stored in the storage tank 80, and a reclaimed water collecting step S4; The water is supplied to the second microfilter 70 through the second microfilter 70. The second microfilter 70 receives the water containing the water that has been lowered by the helical swash plate 33 , And recycling water (S5), which is filtered and stored in the storage tank (80), and reclaimed water (S5). The method of separating PVB and glass of waste reinforced glass for automobiles and architectural uses .

According to the present invention, the rapid precipitation method of recycling wastewater generated in the glass processing process and the method of separating the two materials by using the specific gravity of the raw material and the rotational force of the agitator, It is possible to reuse the wastewater generated in the process as a raw material by separating and reusing the waste water in a no-discharge manner.

1 is a flow chart of a PVB and glass separation method according to the present invention
Fig. 2 is a detailed flowchart of Fig.
3 is a view showing an entire process of a separation apparatus for implementing the separation method according to the present invention.
4 is a view showing the configuration of a separation tank and a quantitative feeder for implementing the separation method according to the present invention;
5 is a perspective view of a helical swash plate for implementing the separation method according to the present invention.
6 is a perspective view of another embodiment of a helical swash plate for implementing the separation method according to the present invention.

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

The present invention separates PVB and glass from waste reinforced glass by using a rapid precipitation method for recycling wastewater generated during glass processing and a method for separating the two materials by using the specific gravity of the raw material and the rotational force of the agitator, The present invention relates to a PVB and glass separation method of a waste reinforced glass for automobiles and architectural use using a waste water free circulation system which enables reuse of wastewater generated in the process in a non-reflux manner. Referring to FIGS. 1 to 6 A pulverizing step S1, a quantitative feeding step S2, a PVB and glass separation step S3, a recycled PVB and reused water collecting step S4, a recycled glass and a reclaimed water collecting step S5.

The details of steps S1 to S6 according to the present invention are as follows.

S1 - Powder grinding step

: Powdered tempered glass containing PVB and glass is pulverized into powders of 2 mm or less.

S2 - Quantitative supply step

: The above powder is supplied and a fixed amount is discharged.

S3 - PVB and glass separation step

: A spiral swash plate 33 provided on the outer side of the impeller 32 to be separated from the ice while being rotated by the propeller-type impeller 32, The water containing glass is lowered by water surface load and gravity and the PVB containing water is raised by the rotating force and the rising flow to separate PVB and glass.

S4 - Recycled PVB and reclaimed water collection phase

: PVB containing water raised and raised by the spiral-type swash plate 33 is supplied to separate water and PVB into a screen net 40 and dewatered by a dehydrator 43 to obtain a recycled PVB, 1 micro-filter 50 to be transported and stored in the storage tank 80 to separately collect the recycled PVB and the reused water.

S5 - Recycled glass and reclaimed water

: A glass containing water to be lowered by the helical type swash plate 33 is supplied, and water and glass are compressed and separated by a filter press 60 to obtain a recycled glass. The separated water is passed through a second microfilter 70 To be stored in the storage tank 80 so that the recycled glass and the reused water are separated and collected.

The PVB and glass separation method of the automotive and construction waste reinforced glass using the waste water non-reflux method according to the present invention will be described in more detail with reference to the PVB and the glass separator shown in FIGS. 3 to 6, same.

3 to 6, the PVB and glass separator of waste reinforced glass for automobiles and architectures using the waste water non-reflux method according to the present invention includes a powder grinder 10, a quantitative feeder 20, a separation tank 30, A screen netting 40, a first microfilter 50, a filter press 60, a second micrometer 70 and a storage tank 80.

The powder crusher 10 is configured to crush the PVB used in the present invention and the waste reinforced glass for automobiles and architectures including glass into powder of 2 mm or less. When the waste tempered glass is pulverized to 2 mm or less in the powder crusher 10, the particle size of the PVB is maintained at 1 to 2 mm, but the glass is in a powder state of 1 mm or less.

The quantitative feeder 20 is a device for feeding pulverized waste-reinforced glass powder through a powder crusher 10 and dispensing the pulverized glass powder in a fixed quantity. An apparatus capable of supplying a fixed amount of a screw conveyor or the like as shown in FIG. 4 is used.

The pulp-reinforced glass powder discharged in a fixed quantity through the quantitative feeder 20 is supplied to the separation tank 30 together with water (reusable water). 3 and 4, the separating tank 30 is provided with a separating hood 31 in the form of a circular tube for receiving powder and water discharged from the quantitative feeder 20, and the lower part of the separating hood 31 And a propeller-type impeller 32 connected to a rotating shaft 39 driven by a motor 38 and pushing the powder and water outward while agitating the powder and water through a rotating force. The separating hood 31 and the impeller 32, outside the ice-installed navigation spaced in the PVB glass containing water it is lowered by the number of area load and gravity and containing the water is provided with a helical inclined plate 33 to rise by a rotational force and the upward flow and the helical inclined plate ( A discharge pipe 35 is formed in the upper part to discharge the PVB containing water raised by the spiral 33 and the lower part of the sinking part 37 is provided at the lower part to store the glass containing water lowered by the spiral- Is formed in the shape of a circular tube.

Through the waste glass powder and water while pushed out to the outside (edge side) helical inclined plate 33 of the cylindrical separation tank 30 when stirred with a propeller-type impeller (32) is put into the separating hood (31) of water The glass containing the part is lowered, and the PVB containing part of the water is raised.

At this time, since the impeller 32 may cause the glass to rise during the descent, the impeller 32 having a vertical shape or inclination of less than 15 degrees is used, and the number of revolutions of the impeller 32 is set to 15 to 20 rpm The width t of the impeller 32 is at least 10% of the height h of the helical swash plate 33 and the length of the impeller 32 is not less than 10% Is preferably set to 1/3 or more of the diameter (D) of the separation tank (30).

In the spiral wobble plate 33, the glass sinks due to the water surface area load and the gravity of the helical wobble plate 33 , and the PVB and water float to the top due to the rotational force and the upward flow. At this time , the spiral-type swash plate 33 may be formed to have a flat plate-like inclined surface as shown in FIG. 5. However, as shown in FIG. 6, the inclined surface may be curved so that the PVB containing water can be easily raised .

5, the helical swash plate 33 is installed at an interval of not more than 100 mm in the case of the rapid precipitation plate for wastewater treatment. However, as shown in FIG. 6, in order to secure a smooth rising space of the PVB, And a separation hood 31 provided on the center side of the separation tank 30 for preventing clogging between the PVB and the spiral wobble plate 33 during an overload in which the glass is loaded in an amount larger than the capacity, ) Is preferably set to 40 to 60 mm.

It is preferable that the width W of the helical swash plate 33 is set to 1/4 to 1/2 of the diameter D of the separation tank 30. At this time, if the ratio is less than 1/4, the clogging phenomenon tends to occur. If the ratio is 1/2 or more, the separation performance is excellent, but the feed amount is decreased.

The angle k of the spiral type swash plate 33 is set to 60 to 70 degrees. The number of revolutions of the impeller 32 should be varied according to the inclination angle, and the number of revolutions is increased as the angle is increased.

The water and the PVB that are raised by the spiral type swash plate 33 are discharged through the discharge pipe 35 formed on the upper side of the separation tank 30 and are discharged by the screen net 40 connected to the discharge pipe 35 And PVB. The water discharged through the dehydrator 43 is filtered through the first microfilter 50 connected to the dehydrator 43 and used as the reused water. The filter 50 allows the use of a filter through which particles of 2 to 5 占 퐉 pass .

Between the screen net 40 and the first microfilter 50, a storage tank 45 equipped with an oil absorption nozzle 46 for removing scrap of waste reinforced glass contained in water or oil that may be adhered during transportation .

The glass containing water descending to the lower portion of the spiral type swash plate 33 is compressed by the filter press 60 connected to the settling portion 37 formed at the lower portion of the separation tank 30 to remove moisture and to remove water The separated glass is collected separately and recycled. The water discharged through the filter press 60 is filtered by a second micro-filter 70 connected to the filter press 60 and used as reused water do.

Between the filter press 60 and the second microfilter 70, a reservoir 65 equipped with an oil absorption nozzle 66 for removing scrap of waste reinforced glass contained in water and oil that may be adhered during transportation .

Even if the first microfilter 50 through which particles of 2 to 5 탆 pass is used, the upper layer water discharged through the discharge pipe 35 can be used for a long time because of a small closure phenomenon. However, When the lower layer may have even been filtered by the filter press 60 to apply the same to the first micro-filter 50 is higher than the pollution level because the filter top layer can easily clog the second micro-filter 70 is 6~10㎛ A filter through which the particles of the particles are passed is used to maximize the operation time. The water having passed through the second micro-filter 70 using the filter through which the particles of 6 to 10 mu m are passed is completely free from re-use, and can be reused even when a sand filtration device with a somewhat low treatment efficiency is provided.

When the water filtered through the first micro filter 50 and the second micro filter 70 is continuously reused, turbidity and viscosity increase, so that the silicon (Si ) Or an alumina (Al) based flocculant into the water to remove the water can solve the problem of turbidity and viscosity while allowing glass to be recycled.

Also, since the amount of water contained in the PVB and glass is about 30% (based on 1 day) of the capacity of the separation tank 30, it is possible to continuously reuse even if the reusing water is subjected to relatively simple filtering. (Si) or alumina (Al) based coagulants as described above, the pollution degree is regularly lowered, so that the waste water desalination system to be implemented in the present invention becomes possible.

And a storage tank 80 connected to the first microfilter 50 and the second microfilter 70 for storing the reused water discharged through the first and second microfilters 50 and 70 and supplying the reused water to the separation tank 30, The replenishing water supply tank 85 for supplying replenishing water of clear water is further connected to the storage tank 80. [

In the construction of the PVB and the glass separator of the waste reinforced glass for automobiles and architectural use using the waste water no-discharge system according to the present invention, the force acting in the separation tank 30 provided with the spiral wobble plate 33 is gravity, The floating force due to the supply and discharge of the water by the impeller 32 acts and the laminar flow state in which the turbulence does not occur inside the helical swash plate 33 can be separated from the PVB only.

Further, clogging may occur in the helical swash plate 33 or the separation hood 31 depending on the amount of the raw material supplied. When pumping is performed to remove the glass settled to the lower part of the separation tank 30, Since the power is applied to the rising speed, the normal operation state can be maintained by increasing the circulating water quantity by the same amount instantaneously.

If the supply of the raw material to the separation tank 30 is cut off and the PVB is completely removed, the filter press 60 can be operated. In this case, the continuous operation can not be performed. The circulation water for keeping the residence time at about 10 minutes is automatically supplied and the supply amount is increased by an amount that is exited when the pump of the filter press 60 is operated.

In the case of the filter press 60, since the amount of pumping is not always constant, an automatic flow measuring device (not shown) is installed and programmed to operate in conjunction with the amount of circulation, and the amount of circulation is automatically controlled Device and a flow control valve (not shown).

The supply amount of the raw material supplied into the separation tank 30 allows the driver to adjust the rotation speed of the fixed amount feeder 20 and the rotation speed of the impeller 32 is controlled by the driver .

S1: Powder grinding step S2: Quantitative feeding step
S3: PVB and glass separation step S4: Recycled PVB and reclaimed water collection step
S5: Recycled glass and reclaimed water collection stage
10: Powder grinder 20: Quantitative feeder
30: Separation tank 40: Screen netting
50: first microfilter 60: filter press
70: second microfilter 80: storage tank

Claims

A powder grinding step (S1) of pulverizing waste reinforced glass containing PVB and glass into powders of 2 mm or less ;
A quantitative supply step (S2) of supplying the powder and discharging the powder in a predetermined amount to the separation tank (30 );
While the quantitative supply received powder and water, said separating tank (30) when supplied with separate hood 31 of the circular tube shape of the internal stirring of the powder and water, using a rotational force of the propeller-type impeller 32. The separation hood (31 And the water containing glass is lowered by the water surface area load and the gravity by the spiral wobble plate 33 provided on the outer side of the separation hood 31 , A PVB and a glass separation step (S3), which are raised by the glass separation step (S3);
PVB containing water raised and raised by the spiral type swash plate 33 is supplied to separate water and PVB into a screen net 40 and dewatered by a dehydrator 43 to obtain a recycled PVB, A recycled PVB filtered by the microfilter 50 and transported and stored in the storage tank 80, and a reclaimed water collecting step S4;
The water is supplied to the second microfilter 70 through the second microfilter 70. The second microfilter 70 receives the water containing the water that has been lowered by the helical swash plate 33 , It includes; is the filtered by storage and reuse recycled glass may collect step (S5) to be stored move to the tank 80
Between the screen net 40 and the first microfilter 50 and between the filter press 60 and the second microfilter 70 is provided an oil suction nozzle 46 or 66 for removing oil contained in the water. (45, 65) to remove oil from the water discharged from the screen (40) and the filter press (60)
And injecting a flocculant of silicon or alumina series into the water to lower the turbidity and viscosity of the water having passed through the first microfilter (50) and the second microfilter (70) PVB and Glass Separation Method for Automotive and Architectural Waste - Tempered Glasses Using.

The method according to claim 1,
Wherein the helical type swash plate (33) is formed so that the sloped surface is curved so that the PVB containing water can be easily raised. The method of separating PVB and glass of automotive and architectural waste reinforced glass using the waste water no-

3. The method according to claim 1 or 2,
Wherein the helical swash plate (33) is installed at an interval of 120 to 150 mm. The method of separating PVB and glass of waste reinforced glass for automobiles and architectures using the waste water non-circulation system.

The method of claim 3,
The spiral type swash plate 33 is provided so as to be spaced apart from the separation hood 31 by 40 to 60 mm in order to prevent clogging between the swash plate 33 and the swash plate 33 when the PVB is overloaded, And a method for separating glass and PVB of a waste reinforced glass for automobiles and architectures using a waste water-free method.

The method of claim 3,
Wherein a width W of the spiral type swash plate 33 is set to 1/4 to 1/2 of a diameter D of the separation tank 30. The waste reinforced glass for automobiles and architectural use using the waste water non- PVB and glass separation method.

The method of claim 3,
Wherein the angle (k ) of the spiral type swash plate (33) is set to 60 to 70 degrees. The method of separating PVB and glass of waste reinforced glass for automobiles and architectures using the waste water non-circulation system.

delete

3. The method according to claim 1 or 2,
Wherein the storage tank (80) is further connected to a replenishing water supply tank (85) for supplying replenishing water. A method for separating PVB and glass from waste reinforced glass for automobiles and architectural use using a waste water desalination system.

delete