KR100313231B1 - a equipment treatment of discharge filtration plant - Google Patents

Abstract

The present invention recovers the supernatant of the discharged water in the storage tank (recovery tank) and transfers the remaining part to the holding tank using the discharge pump, and then agitates (mixes) the flocculant in the dosing mixing device,

When the agitated effluent is sent to the high speed flocculation sedimentation tank, the effluent treated in the primary holding tank together with the polymer coagulant poly aluminum chloride (POLY ALUHINUM CHLORIDE) is coagulated and agitated so that the effluent is floated from the center of the tank to both edges. and,

The injured effluent flows after a certain time, the floc (FLOC) is generated, a part of the sediment is settled to the bottom, a part is passed through the collector pack to a certain size on the upper surface and then rolled down along the slope of the collector pack down the sludge discharge pipe Make colonies at the entrance,

The colonized sludge is agitated with the polymer coagulant again in the mixing tank through the discharge pipe while the sludge is conveyed while being aerated by the aerator. The conveyed sludge is dehydrated and pressed in the belt press, and the sludge is formed as a cake, and the dehydrated water is transferred to the storage container by a conveying conveyor, and the dewatered water is introduced into the holding tank again. The present invention is easy to move and disassemble and assemble. A wastewater treatment plant is packaged in a single case.

Description

Water treatment plant discharge water treatment device {a equipment treatment of discharge filtration plant}

The present invention is a facility for treating the effluent and sedimentation effluent generated during the backwash of the water purification plant filter to remove the COD, SS, etc. through the physicochemical treatment method to meet the effluent water quality standards, to prevent environmental pollution and ecosystem destruction, etc. The present invention relates to a water treatment plant effluent treatment device invented to be transported and disassembled by packaging the system in a single case to reduce maintenance and facility investment.

Exhaust water facilities used in existing water purification plants have a discharge water tank to collect the discharge water, and return the supernatant water that has passed through the primary and secondary concentrate tanks to the landing well, and the sludge settled at the bottom of the primary and secondary concentrate tanks. In order to make the characteristics of sludge uniform, it is stirred by using a stirrer of the distribution tank, and then a flocculant is added. The flocks formed after the flocculation reaction are dehydrated through a dehydrator, and the cake is stored in a storage hopper and charged to a landfill site. Dispose of it, and recovers the dehydrated liquid and recycles it to the landing boat;

A static mixer is provided with a submersible pump of a portable turbid water treatment apparatus of Japanese Patent Application Laid-Open No. 7-204657 and mixes coagulant with turbid water from a raw water tank storing dehydration. A flocculation settling tank having a sludge discharge port for receiving turbid water from the static mixer and settling the sludge; a mixing tank for mixing the flocculant into the sludge taken out from the flocculation settling tank and pumped through the pump; And a variable discharge pump for controlling the discharge amount of the sludge according to the throughput, and the water pumped from the coagulation sedimentation tank to the follicle washing water of the belt press. After use, it circulates to the raw water tank and installs the drive of the submersible pump to the raw water tank. It had a configuration such as that controlled by the level switch.

Therefore, the existing effluent or turbid water treatment system is implemented in a larger scale than the purpose of use, the required area is large, maintenance cost and operation cost are high, and the initial investment cost of the facility is high. Not only is it expensive, but it is not suitable for problems such as over-investment compared to treatment efficiency and purpose of use, and small water purification plant.

The present invention has been invented in view of the above-mentioned problems, and a part of the discharged water stored in the storage tank (recovery tank) is transferred to the holding tank using a discharge pump, and then aluminum sulfate coagulant is introduced into the holding tank by the input equipment to discharge the discharged water. After mixing evenly while passing through the mixing device, it is sent to the high-speed flocculation settling tank, where the discharged water mixed in the primary holding tank together with the polymer flocculant (PAC) is rotated at low speed by the flocculation stirring propeller. If the discharged water is floated to the edge, the discharged water will generate a floc over a certain period of time, part of which will settle down, while the other part will pass through the collector pack, become a certain size on the top, and then run down the slope of the collector pack. It is rolled down to form a colony around the inlet of the sludge discharge pipe. The sludge formed in this way is discharged by the bell mouse valve through the sludge discharge pipe, and the sludge discharge can be controlled. The discharged sludge is mixed with the polymer flocculant in the mixing tank again through the sludge transfer pipe, and the aeration phenomenon is sometimes caused by the aeration device. The sludge is made into a cake, which is dehydrated by a belt press and then transferred to a storage container by a conveying conveyor, and the dewatered water is introduced into the holding tank again. At this time, in the high-speed flocculation sedimentation tank, the sludge settles to the lower part and only the upper part of the clear supernatant is raised, so that the device is packaged into a single component to be discharged or recycled through the discharge pipe. As the maintenance cost is low, even if the wastewater treatment facility is equipped at each industrial site like the existing facility, it prevents the phenomenon of avoiding the operation of the machine due to excessive maintenance cost and complexity of operation method, and minimizes water pollution. It is invented to be easy to move and install because it is simple in size, and is capable of unmanned operation by the full automation of the machine.

1 is a process diagram of the effluent treatment system of the present invention.

2 is a front configuration diagram of a treatment apparatus of the present invention.

Figure 3 is a plan view of the processing apparatus of the present invention.

Figure 4 is a cross-sectional view of the high speed flocculation sedimentation tank of the present invention.

5 is an exemplary view of a collector pack of the present invention.

Figure 6 is a block diagram of a mixing device of the present invention.

7 is a bell mouse-type valve configuration of the present invention.

8 is a schematic configuration diagram of the belt press of the present invention.

<Code Description of Main Parts of Drawing>

10: reservoir 11, 51: injection nozzle 20: holding tank,

12: discharge pump 21: mixing device 22: outlet pipe,

23: motor shaft 24, 24 ': impeller 25: cover plate

30: high speed flocculation tank 31: stirring propeller

32: internal chamber 33: partition 35: sludge

36: supernatant discharge pipe 37: discharge distributor 38: sludge discharge pipe

39: drain 40: collector pack 50: fuzzy aeration device

52: transfer pump 53: bell mouse valve 54: discharge regulator

54: handle 60: mixing tank 70: belt press

73: heat blower 74: enclosure 80: conveying conveyor

90: storage container

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

A holding tank for mixing the discharge nozzle and the flocculant fresh water in the storage nozzle 10, the storage tank 10, and the storage tank 10 into which air is introduced by the blower B into the storage tank 10 in which discharge water is introduced and fresh water;

After mixing with the flocculant in the holding tank, the sludge aggregated in the settling tank in which the inclined plate is installed inside is partially precipitated and the flocculated sludge is coagulated in the substrate and processed into a cake by a belt press, and the supernatant of the settling tank is discharged. In the system,

After the holding tank 20 is transferred from the storage tank 10, the impellers 24 and 24 ′ rotated by the motor shaft 23 so that the discharge water and the coagulant 100a of aluminum sulfate can be mixed and stirred. A mixing device 21 installed and having a siphon tube 21a, 21b on one side of the upper and lower sides thereof;

A high speed agglomeration sedimentation tank 30 for mixing and stirring the first treated water introduced from the holding tank 20 with a polymer coagulant (PAC) 100b;

A stirring propeller 31 rotated by a motor in the center of the high-speed agglomeration precipitation tank 30,

An inner chamber 32 having a bottom opening is installed around the stirring propeller 31, and a partition 33 is formed in a cylindrical shape at an upper end of the inner chamber 32.

Between the lower end of the partition 33 and the inner wall of the middle portion of the high-speed flocculation sedimentation tank 30, the collector pack 40 formed of uneven corrugation in order to maximize the contact area;

A supernatant water discharge pipe 36 having a discharge distributor 37 is installed at an upper end of the collector pack 40, and a sludge 35 discharge pipe 38 installed at an outer circumferential surface of the lower end of the inner chamber 32;

In the center of the bottom of the high-speed flocculation sedimentation tank 30, the drain 39 is in communication with the discharge water storage tank 10 so that the supernatant is discharged to the discharge consisting of a top and a circular distributor type 36 and;

The sludge discharged into the discharge pipe 36 is discharged to the purge type aeration device 50 by the sludge discharge pipe 38 of the lower circular distributor type, and then aerated by the air injected from the nozzle, and then the mixing tank 60. After stirring with the polymer flocculant (100c) in the hot air blower 73 to promote drying and dehydration on one side is installed, dewatering compression by a compression roller in the form of a porous plate in the belt press 70 made of a housing 74 The sludge is caked,

The dewatered water is introduced again into the storage tank 10, and the sludge cake is a water purification plant effluent treatment device packaged to be accommodated in a single case configured to be transferred to the storage container 90 by the conveying conveyor 80. .

Reference numeral 21 'is a mixing device pedestal, 100 is a coagulant dosing device, 71 is a head roller, 72 is a compression roller.

An embodiment of the wastewater treatment system of the present invention made as described above is as follows.

Since the discharged water flows through the spray nozzle 11 installed at the bottom of the storage tank 10 in the blower B installed on one side while the discharged water is stored in the storage tank 10 for 1 to 5 hours, the discharge water is discharged. Occasionally flowing, the sludge, etc. do not solidify at the lower end of the reservoir and the natural sedimentation occurs while the upper part stays. When the discharged water is collected in a predetermined amount in the storage tank 10 is transferred to the holding tank 20 by the transfer pump 12. That is, once the discharged water stored in the reservoir 10 stays for 1 to 5 hours, the colloidal material (ss) is settled to the lower part by natural sedimentation, and the upper supernatant is 40 to 50% by a pump or natural discharge. The discharged water that is discharged or recollected is discharged through the injection nozzle, and the air discharged from the blower is ejected through the injection nozzle, so that the solidified sludge flows and is mixed, and is transferred to the holding tank 20 by the discharge pump 12.

The discharged water transferred to the holding tank 20 is rapidly stirred (mixed) while passing through the mixing device 21 in which the propeller is rotated by the coagulant 100a of aluminum sulfate, which is a coagulant, and a motor. At this time, the laminar flow generated by the rotation of the impeller 24 fixed on the motor shaft 23 in the mixing device 21 and the turbulence generated by the rotation of the impeller 24 'fixed on the lower side occur simultaneously. Therefore, by using the dynamic properties of the water flow, the mixing and flocculation can be performed in a short time to treat the wastewater first. In addition, since the selection of the inlet and outlet pipes of the holding tank 20 is directly related to the treatment efficiency, the design of the inlet pipe and the outlet pipe is carried out in consideration of the number of losses, and then sent to the high speed coagulation sedimentation tank 30.

The treatment water first treated in the holding tank 20 as described above is introduced into the inner chamber 32 in the high-speed flocculation sedimentation tank 30 through the outlet pipe 22 and rotated by a motor in the center of the inner chamber 32. When the stirring propeller 31 is installed, the effluent and the polymer coagulant 100b (PAC) are stirred at a low speed, vortexed in the inner chamber part 32, and agglomerated and raised through the bottom opening of the inner chamber 32. At this time, the discharged water passes through the collector pack 40 installed in a corrugated shape between the partition 33 and the inner wall of the high speed flocculation sedimentation tank 30. The lower end of the collector pack 40 is inclined downward and the upper part is inclined upward. Therefore, when the discharged water rises from the bottom to the upper surface, the collector pack 40 rises through the bottom, and when the discharged water falls, the sedimentation occurs in the natural state without pressing pressure. ) As it descends along the slope of the top surface, it has cohesion by the polymer coagulant (100c), so that the sludge made of fine molecules is aggregated into the granules while being rolled off from the upper surface of the collector pack 40 to form a colony around the inlet of the sludge discharge pipe 38. Will be achieved. That is, the inner circumferential surface of the lower chamber of the inner chamber 32 and the inner wall inclined surface of the lower portion of the high speed coagulation sedimentation tank 30 are vortexed while slowly rotating in the inner chamber 32 so that the discharged water that rises inside and the discharged water that precipitates after rising As a boundary line, the sludge forms a layer and forms a colony. Therefore, the purified supernatant is present in the upper layer of the high-speed flocculation sedimentation tank 30, and the sludge forms a colony at the lower part of the upper layer, so that the water is stagnant in the upper layer. And discharged through a constant discharge pipe 36 in the form of a circular distributor. The high flow rate of the inlet water in the high-aggregated sedimentation tank 30 is 20 ~ 40mm / min in consideration of the treatment efficiency, but the present invention is to be able to selectively adjust by using a valve control device.

The present invention can be visually determined whether the sludge should be discharged by removing the bell mouth type valve 53 provided at one side of the sludge discharge pipe 38 even after discharge of the supernatant or before discharge of the constant water discharge controller ( If it is determined that the sludge is to be discharged using 55), the sludge discharged through the sludge discharge pipe 38 in the form of a circular distributor can be discharged to the purge type aeration device 50 by opening the valve.

As such, the sludge introduced into the purge type aeration device 50 is once again discharged from the injection nozzle 51 with the air supplied from the blower B together with the discharged water accompanying the discharge, so that the sludge is prevented from being deposited. It is in the state of flowing in the form, the transfer pump 52 transfers the sludge with the discharged water to the mixing tank 60, stirring with the polymer flocculant (100C) and the time to stay in the mixing tank 60 is less than 15 minutes and completely When the hook is formed to supply a predetermined amount to the belt press for dehydration (70).

The belt press 70 of the present invention is formed of a housing 74 so that the head roller 71 and the compression roller 72 are installed therein, and a hot air blower 73 is provided at one side of the outer surface of the housing to inject hot wind. The hot-air-drying sludge is introduced into the belt press 70 to increase the dewatering efficiency during compression by the compression roller 72 formed in the form of a porous plate. The belt press 70 is formed so that the shape from the inlet to the end of the head roller 71 to the compression roller is gradually narrowed, so that the sludge is introduced into the distal end by the pressure roller while the water is dehydrated in the process The sludge is then caked and then transported to the storage container 90 by the transport conveyor 80 to be stored. The belt press 70 of the present invention is composed of coalescing 74 to prevent odors generated during dehydration from being scattered into the air to be transmitted to the outside, and to make the pressure roller be a system of a single process, and the number of rollers is 6 It was reduced to less than two dogs and shortened the length of the belt.

The dewatered water in the process of cake sludge as described above is recovered to the waste water storage tank 10 to repeat the waste water treatment process again.

In brief description of the treatment process in which the present invention is made, the first process by stirring with the flocculant (100a) of the aluminum sulfate in the holding tank 20 → the holding tank 20, the polymer in the high-speed flocculation sedimentation tank (30) After stirring with the flocculant (100b), the supernatant is discharged and the pelletized sludge (35) is transferred to the purge type aeration device (50). → The sludge mixing tank (60) is mixed with the polymer coagulant (100c) → the sludge is dewatered by a belt press (70). The process of the completion of the transfer to the storage container 90 into the cake-conveying → conveying conveyor 80 is made as shown in FIG. In the present invention, the process from the holding tank to the dewatering belt press is configured as a single device packaged to be accommodated in a single case to be formed as a single device, which requires less installation space and allows for a mobile installation. The process from to the last storage container is done with an automated system.

According to the present invention made as described above, the water purification plant filter backwash effluent treatment device is composed of one single device to separate the sludge component and the effluent in the effluent within a short time, and has a significant effect on the water content reduction of the sludge, and the required equipment area is It is small and fast, and it is easy to cope with the fluid change of equipment according to the change of treatment capacity, and it is possible to operate it without special expertise. To prevent it.

In other words, the present invention is 1) the size of the treatment plant is small compared to the existing equipment, 2) less area required, 3) compact and packaged, the operating cost and maintenance cost is low, and 4) the initial investment cost of the equipment 5) Shorten sludge concentration time, 6) Excellent water treatment efficiency, 7) Easy disassembly and assembly of equipment, moveable, 8) Possible to install in a row according to treatment scale When one system fails, the other system can be operated without interruption of the entire process. 9) The dehydration facility is simple and has the effect of preventing odor when dewatering.

Claims (3)

A holding tank for mixing the discharge nozzle and the flocculant fresh water in the storage nozzle 10, the storage tank 10, and the storage tank 10 into which air is introduced by the blower B into the storage tank 10 in which discharge water is introduced and fresh water; After mixing with the flocculant in the holding tank, the sludge aggregated in the settling tank in which the inclined plate is installed inside is partially precipitated and the flocculated sludge is coagulated in the substrate and processed into a cake by a belt press, and the supernatant of the settling tank is discharged. In the system, After the holding tank 20 is transferred from the storage tank 10, impellers 24 and 24 ′ rotated by the motor shaft 23 are installed so that the effluent and the coagulant 100a of aluminum sulfate can be mixed and stirred. A mixing device 21 in which siphon tubes 21a and 21b are formed; A high speed agglomeration sedimentation tank 30 for mixing and stirring the first treated water introduced from the holding tank 20 with a polymer coagulant (PAC) 100b; A stirring propeller 31 rotated by a motor in the center of the high-speed agglomeration precipitation tank 30, An inner chamber 32 having a bottom opening is installed around the stirring propeller 31, and a partition 33 is formed in a cylindrical shape at an upper end of the inner chamber 32. Between the lower end of the partition 33 and the inner wall of the middle portion of the high-speed flocculation sedimentation tank 30, the collector pack 40 formed of uneven corrugation in order to maximize the contact area; A supernatant water discharge pipe 36 having a discharge distributor 37 is installed at an upper end of the collector pack 40, and a sludge 35 discharge pipe 38 installed at an outer circumferential surface of the lower end of the inner chamber 32; In the center of the bottom of the high-speed flocculation sedimentation tank 30, the drain 39 is in communication with the discharge water storage tank 10 so that the supernatant is discharged to the discharge consisting of a circular distributor of the upper form (36), The sludge discharged to the discharge pipe 36 and the purge type aeration device 50 to be aerated by the air injected from the nozzle, A mixing tank 60 for stirring the sludge aerated by the aeration device 50 with the polymer flocculant 100c; A normal belt press 70 for dehydrating the stirred sludge in the mixing tank 60 and making it into a cake; Water purification plant effluent, characterized in that packaged to accommodate a number of devices in the case including a conveying conveyor 80 for transporting the sludge cake dewatered by the pressing roller of the belt press 70 to the storage container 90 Processing unit. The method of claim 1, The mixing device 21 mounted inside the holding tank 20 is spaced at the top of the mixing device 21 so that rapid and slow stirring can be simultaneously performed in a tank for a short time to promote the reaction of the flocculant and the effluent. A water purification plant effluent treatment device characterized in that a control cover plate (25) is provided and the motor shaft (23) is provided with two stages of impellers (24, 24 '). The method of claim 1, By installing the sludge discharge pipe 38 in the lower portion of the high speed flocculation sedimentation tank 30 in the form of a circular distributor, the discharge of the sludge can be discharged uniformly over the entire surface, and the bell mouth valve 53 on one side of the discharge pipe 38. The water treatment plant effluent treatment device, characterized in that configured to determine whether the sludge is discharged by visually checking the concentration of the sludge.