KR200229474Y1 - DAF omitted - Google Patents

Abstract

The present invention relates to a water treatment device that can be used as living water in the water to clean the river water, after pre-treatment in the flotation tank 110 having a fine sludge remaining in the supernatant water produced in the flocculation sedimentation basin (30) DAF pump , Because it is purified by the filter paper 40 can not only maintain the self-cleaning ability of the filter paper for a long time, but also the washing cycle is long, which can significantly reduce the amount of washing water used to wash the filter paper; By using the supernatant water produced in the flotation tank 120 having a DAF pump installed on the supply line for supplying the sludge from the coagulated sedimentation basin 30 to the primary concentration tank 80 in the washing paper used for the filter paper 40 As described above, since the purified water does not need to be supplied and used in the water supply pumping station 60, the wastewater that has to be purified again has been eliminated; Before overloading the sludge generated in the flocculation sedimentation basin 30 to the primary concentration tank 80, the overload of the primary concentration tank due to the sludge concentration is eliminated by supplying the flotation tank 120 having the DAF pump at a low water content. Of course, it is possible not only to reduce the operation time and reduce the capacity of the primary and secondary concentration tanks, but also to reduce the output capacity of the power source according to the operation, thereby lowering the production cost according to the concentration tank production; After refining the supernatant water overflowing from the primary concentration tank (80) (90) in the flotation tank (130) having the DAF pump installed in the discharge line, it is discharged to discharge the high quality discharge water to prevent secondary pollution of the river. At the same time, the purified supernatant is regenerated in the flotation tank 160 having the DAF pump, and the supernatant water sent to the follicle washing tank 200 is pumped to the dehydrator 100 to wash the filter cloth so that the purified water must be used. Eliminated the disadvantages of; Since the desorption liquid generated while washing the filter cloth of the dehydrator 100 can be purified and used in the flotation tank 150 having the DAF pump, the washing water according to the filter cloth washing is recycled without being supplied from the water supply pump station 60. It is possible to minimize water pollution due to the cleaning of the filter cloth of the dehydrator; It is a very useful design that can reduce the operating load of the dehydrator by supplying to the dehydrator in a state in which the water content of the sludge concentrated in the secondary concentration tank is minimized in the flotation tank 140 having the DAF pump.

Description

High sludge thickening and flow rate reduction system using DAF pump

The present invention relates to a purified water treatment device that cleans river water so that it can be used as living water for consumers. In particular, the flotation tank having a DAF (DISSOLVED AIR FLOTATION) pump is installed in the purified water treatment device of a water purification plant to improve the quality of the discharged water. At the same time, the present invention relates to a high sludge thickening and flow rate reduction system using a DAF pump, which not only reduces the operating load due to sludge treatment but also reduces the operating time, and also reduces the amount of water used and the amount of water generated by washing each treatment unit. .

Water used for living water and drinking water at the consumer is supplied for use at each consumer by purifying the river water at the water purification plant.

Water purification apparatus for purifying the river water as described above, as shown in Figure 1 to collect the raw water, which is the river water in the landing well (10) to remove specific gravity, such as sand, or to remove the large particles floating, the impingement well (10) Chemical treatment of the raw water pre-treated in the chemical mixing tank 20 to agglomerate fine suspended matter contained in the raw water.

As described above, the raw water in which the fine suspension is aggregated by the chemical treatment is sent to the flocculation settler 30 to precipitate the fine suspension (hereinafter referred to as sludge) mixed in the raw water to obtain supernatant water.

Looking at the treatment process of the sludge generated by the supernatant and sediment produced in the flocculation sedimentation basin 30 as follows.

First, the supernatant produced in the flocculation sedimentation basin (30) is purified to be usable in the water while going through the filter paper 40, the purified water is purified water (50), water pumping station (60), drainage (70) It will be supplied to the customer through).

On the other hand, the sludge precipitated in the flocculation sedimentation basin 30 is sent to the primary concentration tank 80 and the secondary concentration tank 90 through the distribution tank and concentrated.

As described above, the sludge concentrated in the first and second concentration tanks 80 and 90 is collected in a sludge storage tank and pumped and supplied to the dehydrator 100 by a pump to remove residual moisture in the sludge, and then the cake is finished in a cake state. It will be processed.

In the conventional water purification apparatus for purifying raw water through the treatment process as described above, the supernatant produced in the flocculation settled battery 30 is directly supplied to the filter paper 40 to purify the supernatant so that a large amount of fine sludge exists in the supernatant. In addition, since a large amount of sludge is mixed in the supernatant water, clogging of the filter paper occurs frequently, and the self-cleaning ability is easily lost. In addition, the washing water for backwashing the filter paper 40 so that the self-cleaning ability can be recovered. In addition, since the amount of used was increased, the supply of the washing water was made in the water supply pumping station, and thus had a wastewater to purify the purified water again.

In addition, when the sludge contained in the raw water and the sludge generated in the flocculation sedimentation basin 30 is concentrated in the primary concentration tank 80 and the secondary concentration tank 90, the sludge having a high water content is supplied from the flocculation sedimentation basin 30 as it is. The amount of sludge becomes large, and in order to concentrate a large amount of sludge, the capacity of the 1.2th concentration tanks 80 and 90 must be increased, and as the output capacity of the power source for driving them increases, the production cost according to the production of the concentration tank is increased. It has a problem of rising, and the high water content of the sludge, not only takes a long operation time due to the concentration, but also had a disadvantage in that the operating unit is less sludge thickening efficiency.

On the other hand, the first and second concentration tanks 80 and 90 have the disadvantage that the overflowed supernatant is discharged as it is along the discharge line, the stream is secondary polluted by the fine suspended matter contained in the supernatant, and the water in the sludge The washing water used to wash the filter cloth of the dehydrator dehydrator was supplied from the water supply pumping station 60 to be washed, and thus had a wastewater to purify the purified water again.

The present invention devised to solve the above disadvantages of the conventional water treatment apparatus, the flotation tank having a DAF pump is installed on the supply line for supplying the supernatant water produced in the flocculation sedimentation basin to the filter paper, sludge generated in the flocculation sedimentation basin A floating tank with a DAF pump is installed on the line supplying the primary concentrate to the primary concentration tank, and a part of the discharged water overflowed from the primary concentration tank is sucked out to remove the remaining sludge in the discharged water and sent to the secondary concentration tank. The flotation tank having the DAF pump discharged through the secondary tank and the sludge concentrated in the secondary concentration tank are stored in the sludge storage tank, and the flotation tank having the DAF pump which can send the supernatant water to the secondary concentration tank is installed. Some of the discharged water is supplied to the dehydrator and used to wash the filter cloth of the dehydrator. Is equipped with a floating tank having a DAF pump discharged through the follicle washing tank, and a floating tank having a DAF pump for treating the desorption liquid generated in the dehydrator and recycling the washing water. By minimizing the sludge in the supernatant water supplied to the water to maintain the self-cleaning capacity of the filter paper for a long time, as well as the washing cycle is prolonged can significantly reduce the amount of washing water used in the washing; Second, by reducing the water content in the sludge supplied to the first and second concentration tanks, the overload phenomenon of the thickening tanks due to the sludge concentration can be eliminated, and the operation time can be shortened; Third, the secondary discharge of the river can be prevented by refining the discharged water again to discharge the high-quality discharged water; Fourth, the purpose is to reduce the amount and generation of washing water according to filter paper or dehydrator cleaning.

1 is a block diagram of a high sludge thickening and flow rate reduction system using a DAF pump according to the present invention.

Figure 2 is a schematic diagram extracting the main parts of the present invention.

Figure 3 is a block diagram of a floating tank having a DAF pump of the present invention.

※ Explanation of code for main part of drawing ※

10: Initiation boat 20: Drug mixing tank

30: coagulated sedimentation basin 40: filter paper

50: water purification pond 60: water supply pumping station

70: reservoir 80: primary concentration tank

90: secondary concentration tank 100: dehydrator

110,120,130,140,150,160: Floating tank with DAF pump

170,180: Dispensing tank 190: Sludge storage tank

200: follicle washing tank 310: tank

311: sludge collection tank 312: pipe joint

313: bulkhead 314: water tank

315: Pipe joint 316: Scraper

320: pump 321: suction line

322 exhaust pipe

The constitution of the present invention for achieving the above object is a supply line for supplying raw water to the coagulation sedimentation basin 30, the supply line to the supernatant produced in the coagulation sedimentation basin 30 is sent to the filter paper 40, the coagulation sedimentation cell Line for supplying the sludge generated in the primary concentration tank (80) and the discharge line for the discharge of the supernatant overflowed from the primary concentration tank, Supply line for sending the sludge concentrated in the secondary concentration tank (90) to the sludge storage tank (190), After washing the filter cloth of the dehydrator 100 to purify the water generated, and to install the flotation tank having a DAF pump in the discharge line to regenerate the final discharge water.

The sludge high concentration and flow rate reduction system using the DAF pump configured as described above is described in detail as follows.

Collecting raw water, which is river water, has a specific gravity such as sand or removes the floating particles with large particles, and the raw water from which the suspended solids are removed from the drilling well 10 is chemically treated to aggregate fine suspended matter contained in the raw water. The chemical mixing tank 20 and the coagulated sedimentation basin 30 which grinds the coagulated suspended solids (hereinafter referred to as sludge) by supplying raw water in which the fine suspended solids are aggregated in the chemical mixing tank 20 and produced in the coagulated sedimentation basin. Filter paper 40 to purify the purified supernatant in a state that can be used in the water, the purified water (50) to collect the purified water, the water pumping station (60) to send the water (pure water) of the purified water to the consumer, the drainage (70) A supernatant integer consisting of;

Sludge precipitated in the flocculation sedimentation basin (30) is supplied via a distributor, a primary concentration tank (80), a secondary concentration tank (90) for concentrating the sludge concentrated in the primary concentration tank again, and concentrated in a secondary concentration tank In the treatment device of the water purification plant to pump the sludge collected in the sludge storage tank to the dehydrator to remove the residual water remaining in the sludge and to treat in the cake state.

Floating tank 110 having a DAF pump to remove the fine sludge remaining in the supernatant water to the filter paper 40 on the line for supplying the supernatant water produced in the flocculation sedimentation basin 30 to the filter paper 40, The flotation tank 120 having a DAF pump is installed on the line for supplying the sludge generated in the flocculation sedimentation basin 30 to the primary concentration tank 80, and the primary concentration tank 80 is provided. Intake and exhaust lines are connected to the supply line for supplying the sludge concentrated in the secondary concentration tank (90) and the discharge line in which the supernatant overflowed from the primary concentration tank is discharged so that some of the discharged water discharged from the primary concentration tank (80) A DAF pump flotation tank 130 is installed to suction and discharge the sludge remaining in the effluent to the secondary concentration tank 90, and the supernatant is discharged to the discharge line again. Secondary through The sludge supplied to the tank 90 is supplied again, and the supernatant is transferred to the distribution tank 180, and the sludge having a low moisture content is sent to the sludge storage tank 190. The flotation tank 140 having the DAF pump has a secondary concentration tank ( 90) is installed between the sludge bird tank 190, and purified sludge generated in the dehydrator for receiving and dewatering the sludge stored in the sludge reservoir tank 190, the sludge is sent to the sludge reservoir tank 190, and the supernatant is washed with the follicle Floating tank 150 having a DAF pump is installed to be sent to the water tank 200, the flotation tank 160 having a DAF pump for refining the effluent to be used for cleaning the filter cloth of the dehydrator 100 is discharged Characterized in that installed on the line,

Floating tank having the DAF pump, the supernatant to the sludge is stored, and the sludge collected by the scraper 316 installed to the upper side is collected and at the same time the pipe to transport the sludge collected to the next processing step A sludge collection tank 311 including a pipe connection joint 312 to be connected is formed on one side, and the partition wall 313 formed on the opposite side of the sludge collection tank 311 to prevent mixing of the injured sludge and the supernatant water. And a tank 310 composed of a supernatant retention tank 314 having a pipe connection joint 315 to allow the supernatant to be discharged and the discharge of the supernatant;

An exhaust pipe is connected to the suction pipe 321 which is connected to the upper water retention tank 314 of the tank 310, and the exhaust pipe is connected to the tank 310 so as to inject sludge contained in the upper water. 322 is connected to circulate the supernatant and at the same time the air being sucked into the tank is characterized in that consisting of a pump 320 to allow the floating or colloidal particles to float in combination with the bubbles.

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

1 is a block diagram of a high sludge thickening and flow rate reduction system using a DAF pump according to the present invention, Figure 2 is a schematic diagram of the main part of the present invention, Figure 3 is a configuration of the flotation having a DAF pump of the present invention Is also.

As shown, the high sludge thickening and flow rate reduction system using the DAF pump of the present invention, when the raw water is fed to the flocculation settling basin 30 is stagnant, the suspended solids out of the suspended solids mixed in the raw water is settled Is produced.

The supernatant produced as described above is pumped and transported along the supply line and transported to the flotation tank 110 having the DAF pump so that fine suspended matter (sludge) contained in the supernatant is supplied to the tank 310 by the pump 320. It is combined with the air bubbles generated by the air to rise.

The sludge floated as described above is scraped by the scraper 316 installed at the upper portion of the tank 310, collected in the sludge collection tank 311, and then sent to the distribution tank 170, and the supernatant is filtered into the filter paper 40. It is transferred and purified.

As described above, the filter paper 40 that purifies the supernatant water may lose its self-cleaning ability by repeated filtering of the supernatant water. At this time, the washing of the filter paper 40 using the supernatant water produced in the flotation tank 120 having the DAF pump. Backwashing.

On the other hand, the sludge generated in the coagulation sedimentation basin 30 is sent to the primary concentration tank 80 through the distributor 170, the coagulation sedimentation tank 30 and the distributor 170 before the sludge is sent to the primary concentration tank (80). The floating tank 120 having a DAF pump installed therebetween is supplied in a state where the water content is lowered.

The sludge supplied to the tank 310 of the flotation tank 120 having the DAF pump in the flocculation sedimentation tank 30 is coupled to the air bubbles generated by the air being introduced together with the supernatant circulated by the pump 320. Done.

The sludge floated as described above is scraped by the scraper 316 installed above the tank 310 and collected by the sludge collection tank 311, and then sent to the distribution tank 170, and the distribution tank 170. In the will be to supply the sludge to the primary concentration tank (80).

The supernatant water produced in the flotation tank 120 having the DAF pump is reduced to the coagulated sedimentation basin 30, and some of them are utilized when backwashing the filter cell 40 as described above.

The sludge supplied from the distribution tank 170 to the primary concentration tank 80 is first concentrated in the primary concentration tank 80, and then sent to the secondary concentration tank 90 through the distributor 180 to be concentrated again. Forklift, the supernatant produced in the primary concentration tank 80 is overflowed along the discharge line, the supernatant discharged along the discharge line is in the flotation tank 130 having a DAF pump installed on the discharge line By reprocessing a portion of the supernatant by the sludge is sent to the secondary concentration tank (90), the supernatant is discharged along the discharge line again to be able to discharge more clear water.

The operation of the floating tank 130 having the DAF pump is operated in the same manner as the floating tank having the DAF pump described above.

The sludge concentrated again in the secondary concentration tank 90 has the water content lowered in the flotation tank 140 having the DAF pump installed between the sludge storage tank 190 which supplies the sludge to the dehydrator 100 while storing the sludge. In the state is sent to the sludge storage tank 190.

The sludge supplied from the secondary concentration tank 90 to the tank 310 of the flotation tank 140 having the DAF pump is floated by the sludge combined with the air bubbles generated by the air supplied from the pump 320. .

The sludge floated as described above is collected by the scraper 316 installed above the tank 310 and collected by the sludge collection tank 311, and then sent to the sludge storage tank 190, and the sludge storage tank 190. Sludge is sent to the dehydrator 100 is to be dehydrated.

On the other hand, the supernatant produced in the flotation tank 140 having a DAF pump is sent to the distribution tank 180.

The sludge stored in the sludge storage tank 190 is sent to the dehydrator 100 by pumping the pump, and the sludge supplied to the dehydrator 100 is positioned between the upper and lower filter cloths to be compressed and thus the water in the sludge is compressed. It will be completely dehydrated.

After the sludge is dewatered using the filter cloth, the filter cloth is washed so that sludge can be dehydrated smoothly. The washing water used to wash the filter cloth is not used as the conventional water purification pump station 60. Regenerated in the flotation tank 160 having the DAF pump installed in the final discharge line to pump the supernatant water supplied to the follicle washing water tank 200 by the pump to wash the filter cloth of the dehydrator (100).

The desorption liquid generated by washing the filter cloth as described above is introduced into the flotation tank 150 having the DAF pump, and the sludge generated therein is stored in the sludge storage tank 190, and the supernatant water is supplied to the follicle washing tank 200. It is used to wash the filter cloth of the dehydrator 100, the remaining part is to be discharged through the final discharge line.

As described above, the sludge high concentration and flow rate reduction system using the DAF pump of the present invention, first, pre-treated in the flotation tank 110 having the fine sludge remaining in the supernatant produced in the flocculation sedimentation basin (30) with the DAF pump. After that, the water purification in the filter paper 40 can not only maintain the self-cleaning ability of the filter paper for a long time, but also the washing cycle is long, which can significantly reduce the amount of washing water used for washing the filter paper; Second, using the supernatant water produced in the flotation tank 120 having a DAF pump installed on the supply line for supplying the sludge from the flocculation sedimentation basin 30 to the primary concentration tank 80 in the washing water used for the filter paper 40 By eliminating the need to receive purified water from the water supply pumping station 60 as in the prior art to eliminate the wastewater to purify the purified water again; Third, before supplying the sludge generated in the flocculation settled battery 30 to the primary concentration tank 80, the overload of the primary concentration tank according to the sludge enrichment by supplying the flotation tank 120 having a DAF pump in a low water content state Of course, not only can reduce the operating time and the capacity of the first and second concentration tanks, but also can reduce the output capacity of the power source according to the operation can reduce the production cost of the thickener production; Fourth, after refining the supernatant water overflowing from the primary concentration tank (80) (90) in the flotation tank (130) having the DAF pump installed in the discharge line, and discharged the high-quality discharge water to discharge the secondary pollution of the stream In addition to preventing and re-purifying the purified supernatant again in the flotation tank 160 having the DAF pump, as well as pumping the supernatant sent to the follicle washing water tank 200 to the dehydrator 100 to wash the filter cloth to use purified water. To solve the disadvantages of the prior art; Fifth, the desorption liquid generated while washing the filter cloth of the dehydrator 100 can be purified and used in the flotation tank 150 having the DAF pump, so that the washing water is not recycled from the water supply pump station 60 according to the washing of the filter cloth. To minimize the water pollution caused by washing the filter cloth of the dehydrator; Sixth, it is a very useful design that can reduce the operating load of the dehydrator by supplying to the dehydrator in a state in which the water content of the sludge concentrated in the secondary concentration tank is minimized in the flotation tank 140 having the DAF pump.

Claims (2)

Collecting raw water, which is river water, has a specific gravity such as sand or removes the floating particles with large particles, and the raw water from which the suspended solids are removed from the drilling well 10 is chemically treated to aggregate fine suspended matter contained in the raw water. The chemical mixing tank 20 and the coagulated sedimentation basin 30 which grinds the coagulated suspended solids (hereinafter referred to as sludge) by supplying raw water in which the fine suspended solids are aggregated in the chemical mixing tank 20 and produced in the coagulated sedimentation basin. A filter paper that purifies the purified supernatant water in a state where it can be used in a water reservoir, a water purification tank 50 where purified water is collected, a water pumping pump station 60 that sends water (purified water) of the purified water to the water reservoir, and a waste water reservoir 70. Handbook; In the primary concentration tank 80, the sludge precipitated in the flocculation sedimentation basin 30 is supplied through a distribution tank, and the secondary concentration tank 90 for re-concentrating the sludge concentrated in the primary concentration tank, and in the secondary concentration tank. In the treatment plant of the water purification plant to pump the sludge concentrated and collected in the sludge storage tank to the dehydrator to remove the residual water remaining in the sludge and to treat in the cake state. Floating tank 110 having a DAF pump to remove the fine sludge remaining in the supernatant water to the filter paper 40 on the line for supplying the supernatant water produced in the flocculation sedimentation basin 30 to the filter paper 40, The flotation tank 120 having a DAF pump is installed on the line for supplying the sludge generated in the flocculation sedimentation basin 30 to the primary concentration tank 80, and the primary concentration tank 80 is provided. Intake and exhaust lines are connected to the supply line for supplying the sludge concentrated in the secondary concentration tank (90) and the discharge line in which the supernatant overflowed from the primary concentration tank is discharged so that some of the discharged water discharged from the primary concentration tank (80) A DAF pump flotation tank 130 is installed to suction and discharge the sludge remaining in the effluent to the secondary concentration tank 90, and the supernatant is discharged to the discharge line again, and concentrated by the primary concentration tank 80 to distribute the tank 180. Secondary through The flotation tank 140 having the DAF pump to which the sludge supplied to the tank 90 and the concentrated sludge is supplied again and the supernatant water is transferred to the distribution tank 180 and the sludge having low moisture content is sent to the sludge storage tank 190 is secondary. It is installed between the concentration tank 90 and the sludge algae tank 190, the sludge is purified by the sludge storage tank 190 by purifying the washing water generated in the dehydrator 100 to receive and dehydrate the sludge stored in the sludge storage tank 190 The floating tank 150 having a DAF pump is installed to send the supernatant to the follicle washing tank 200, and the floating tank having a DAF pump for refining the effluent can be used for washing the filter cloth of the dehydrator 100. Sludge high concentration and flow rate reduction system using a DAF pump, characterized in that 160 is installed on the discharge line. According to claim 1, the flotation tank having the DAF pump, the supernatant to the sludge is stored, the sludge collected by the scraper 316 is installed at the top and the collected sludge is pumped to the next treatment step at the same time The sludge collection tank 311 including a pipe connection joint 312 to which the pipe is connected to be transported is formed on one side, and the opposite side of the sludge collection tank 311 may prevent mixing of the injured sludge and the supernatant. A tank 310 made up of a supernatant retention tank 314 having a pipe connection joint 315 so that the supernatant can be discharged by the partition wall 313 formed so that the supernatant can be discharged; An exhaust pipe is connected to the suction pipe 321 which is connected to the upper water retention tank 314 of the tank 310, and the exhaust pipe is connected to the tank 310 so as to inject sludge contained in the upper water. DAF pump, characterized in that it is connected to the 322 and circulating the supernatant water and at the same time by blowing the air being sucked into the tank to float or colloidal particles are combined to the air bubbles to rise Sludge Concentration and Flow Rate Reduction System