Comprehensive wastewater recycling treatment system

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a comprehensive wastewater recycling treatment system, which comprises a wastewater collecting tank, a reaction tank, a coal-containing wastewater settling tank, coal-containing wastewater treatment equipment and an industrial water tank, the wastewater collecting tank is communicated with a water inlet end of the reaction tank, and a sewage outlet end of the reaction tank is communicated with the coal-containing wastewater settling tank; a produced water outlet end of the reaction tank is communicated with the industrial water tank; the coal-containing wastewater settling pond is communicated with the water inlet end of the coal-containing wastewater treatment equipment, water pumps are arranged at the water inlet ends of the first water inlet pipe, the second water inlet pipe and the second water outlet pipe, and the produced water outlet end of the coal-containing wastewater treatment equipment is communicated with the industrial water pond through a third water outlet pipe; and the sewage outlet end of the coal-containing wastewater treatment equipment is connected with the coal-containing wastewater sedimentation tank through a fourth water outlet pipe. According to the application, on the premise that wastewater treatment is met, as the wastewater does not need to be turned into floccules and only needs to be turned into sewage in the reaction tank, the number of required chemicals is small, and the cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, in particular to a comprehensive wastewater recycling treatment system. Background Art

[0002] When the chemical water system is filtering impurities, impurities are usually trapped in the sand filter or membrane element. After a long time of use, the filter medium may be polluted and blocked. In order to prevent this phenomenon, the sand filter or membrane element needs to be backwashed and flushed regularly. A large amount of drainage will be generated during the equipment flushing and backwashing process, and the water volume accounts for about 15% of the original water volume. This is also the main source of wastewater generated by the water system.

[0003] This part of wastewater is generated non-continuously and discharged without pressure. Most units choose to discharge it directly and no longer recycle it. The units that choose recycling treatment generally collect this part of wastewater and reuse it in the front-end raw water pretreatment system. After adding flocculants for coagulation and sedimentation, it is reused in the circulating water system; and the precipitated flocculants are treated as solid waste by the subsequent sludge treatment system after adding dehydrating agents.

[0004] In order to ensure that all sewage is converted into precipitated flocs, a large amount of flocculants is often required to be added, resulting in high costs. Utility Model Content

[0005] The utility model provides a comprehensive wastewater recycling treatment system to solve the defects in the prior art.

[0006] The utility model is realized through the following technical solutions:

[0007] A comprehensive wastewater reuse treatment system comprises a wastewater collection tank, a reaction tank, a coal-containing wastewater sedimentation tank, coal-containing wastewater treatment equipment and an industrial water tank. The wastewater collection tank is connected with the water inlet of the reaction tank through a first water inlet pipe, the sewage outlet of the reaction tank is connected with the coal-containing wastewater sedimentation tank through a first water outlet pipe, and the produced water outlet of the reaction tank is connected with the industrial water tank through a second water outlet pipe; the coal-containing wastewater sedimentation tank is connected with the water inlet of the coal-containing wastewater treatment equipment through a second water inlet pipe, the water inlet end of the second water inlet pipe is located in the middle of the coal-containing wastewater sedimentation tank, the produced water outlet of the coal-containing wastewater treatment equipment is connected with the industrial water tank through a third water outlet pipe, the sewage outlet of the coal-containing wastewater treatment equipment is connected with the coal-containing wastewater sedimentation tank through a fourth water outlet pipe, and water pumps are arranged at the water inlets of the first water inlet pipe, the second water inlet pipe, the second water outlet pipe and the third water outlet pipe.

[0008] When the present application is in use, the wastewater generated by system flushing and backwashing enters the wastewater collection tank and is driven by the water pump to allow the wastewater to enter the reaction tank through the first water inlet pipe. After a small amount of flocculant is added to the reaction tank, the wastewater is divided into produced water and sludge water. The produced water enters the industrial water tank through the second water outlet pipe, and the sludge water enters the coal-containing wastewater sedimentation tank through the first water outlet pipe for sedimentation, wherein the upper layer of clear water after sedimentation in the coal-containing wastewater tank enters the coal-containing wastewater treatment equipment through the second water inlet pipe for treatment, wherein the produced water in the coal-containing wastewater treatment equipment enters the industrial water tank through the third water outlet pipe, and the blowdown water in the coal-containing wastewater treatment equipment is regularly discharged to the coal-containing wastewater sedimentation tank, and the sludge and coal slime at the bottom of the coal-containing wastewater sedimentation tank are mixed and dried and transported to the coal yard for mixed combustion, wherein, under the premise of satisfying the wastewater treatment requirements, since the present application does not need to turn the wastewater into flocs in the reaction tank, it only needs to be sewage, so less reagents are required, which is more cost-effective.

[0009] Preferably, a rotating rod is vertically arranged in the reaction tank, the upper end of the rotating rod passes through the reaction tank and is rotatably connected to the reaction tank through a bearing, the rotating rod is driven by a driving motor to rotate along its axis, and a lever is vertically connected to the rotating rod. The rotating rod rotates along its axis driven by the driving motor, thereby driving the lever to rotate the axis of the rotating rod, and then when adding medicine, the reaction between the medicine and water is accelerated by rotating the rotating rod.

[0010] Preferably, the second water outlet pipe is connected to the water inlet of the three-way valve, the first water outlet of the three-way valve is connected to the industrial water pool, the second water outlet is connected to the middle pipe, the middle pipe is connected to the connecting pipe, the rotating rod is a tube body with a closed lower end, the middle pipe is coaxial with the rotating rod and is rotatably connected through a sealed bearing, and the rotating rod is connected to several downwardly inclined nozzles along its height direction. When the reaction tank needs to be cleaned, the three-way valve is controlled so that the produced water enters the middle pipe through the second water outlet, enters the connecting pipe through the middle pipe, and enters the rotating rod from the connecting pipe and is sprayed out from the nozzle to achieve the cleaning of the reaction tank. At the same time, since the rotating rod rotates, it can ensure that the cleaning is cleaner, and the rotating rod and the middle pipe are rotatably connected through a sealed bearing, which ensures that water can enter while the rotating rod rotates.

[0011] Preferably, the rotating rod is sleeved with a driven wheel, the driven wheel is located above the reaction tank, a driving motor is fixedly arranged on the reaction tank, the rotating shaft of the driving motor is coaxially fixedly connected with a driving wheel, and a transmission belt is used between the driving wheel and the driven wheel. The rotation of the rotating shaft of the driving motor drives the rotation of the driving wheel, and the driving wheel drives the driven wheel to rotate through the transmission belt, thereby driving the rotating rod to rotate.

[0012] The beneficial effects of the utility model are as follows: under the premise of satisfying the requirements for wastewater treatment, the use of the utility model does not need to turn the wastewater into flocs in the reaction tank, but only needs to turn it into sewage, so less chemicals are required, which is more cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] As shown in the figure:

[0016] 1. Wastewater collection tank, 2. Reaction tank, 3. Coal-containing wastewater sedimentation tank, 4. Coal-containing wastewater treatment equipment, 5. First water inlet pipe, 6. Second water inlet pipe, 7. First water outlet pipe, 8. Second water outlet pipe, 9. Third water outlet pipe, 10. Fourth water outlet pipe, 11. Turning rod, 12. Push rod, 13. Sprinkler, 14. Three-way valve, 15. Intermediate pipe, 16. Driving wheel, 17. Driven wheel, 18. Driving motor, 19. Water pump. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] A comprehensive wastewater reuse treatment system, such as Figure 1 shown. It includes a wastewater collection tank 1, a reaction tank 2, a coal-containing wastewater sedimentation tank 3, a coal-containing wastewater treatment device 4 and an industrial water tank. The reaction tank 2 is provided with a feeding port, and a flocculant is added from the feeding port. The wastewater collection tank 1 is connected with the water inlet end of the reaction tank 2 through a first water inlet pipe 5, the sewage outlet end of the reaction tank 2 is connected with the coal-containing wastewater sedimentation tank 3 through a first water outlet pipe 7, and the produced water outlet end of the reaction tank 2 is connected with the industrial water tank through a second water outlet pipe 8; the coal-containing wastewater sedimentation tank 3 is connected with the water inlet end of the coal-containing wastewater treatment device 4 through a second water inlet pipe 6, and the water inlet end of the second water inlet pipe 6 is located in the middle of the coal-containing wastewater sedimentation tank 3, the produced water outlet end of the coal-containing wastewater treatment device 4 is connected with the industrial water tank through a third water outlet pipe 9, and the sewage outlet end of the coal-containing wastewater treatment device 4 is connected with the coal-containing wastewater sedimentation tank 3 through a fourth water outlet pipe 10, and the water inlets of the first water inlet pipe 5, the second water inlet pipe 6, the second water outlet pipe 8 and the third water outlet pipe 9 are all provided with a water pump 19.

[0019] When the present application is in use, the wastewater generated by system flushing and backwashing enters the wastewater collection tank 1 and is driven by the water pump 19 to allow the wastewater to enter the reaction tank 2 through the first water inlet pipe 5 and add a small amount of flocculant into the reaction tank 2, so that the sewage is divided into produced water and sludge water, with the produced water on the top and the sludge water on the bottom. The produced water enters the industrial water tank through the second water outlet pipe 8 through the water pump 19, and the sludge water enters the coal-containing wastewater sedimentation tank 3 through the first water outlet pipe 7 for sedimentation. Among them, the upper layer of the clear water in the coal-containing wastewater tank after sedimentation is discharged through the second water inlet pipe 8 under the action of the water pump 19. The water pipe 6 enters the coal-containing wastewater treatment equipment 4 for treatment, wherein the produced water in the coal-containing wastewater treatment equipment 4 enters the industrial water pool through the third outlet pipe 9, and the blowdown water in the coal-containing wastewater treatment equipment 4 is regularly discharged to the coal-containing wastewater sedimentation tank 3, and the sludge and coal slime at the bottom of the coal-containing wastewater sedimentation tank 3 are mixed and then dried and transported to the coal yard for mixed combustion. Under the premise of satisfying the wastewater treatment requirements, since the present application does not need to turn the wastewater into flocs in the reaction tank 2, it only needs to be sewage, so less reagents are required, which is more cost-effective.

[0020] When adding flocculants, the flocculants are put below the feeding port, which will cause the flocculants to react slowly with the sewage. For this reason, a rotating rod 11 is vertically arranged in the reaction tank 2. The reaction tank 2 has a through hole, and the outer ring of the bearing is fixedly connected in the through hole. The upper end of the rotating rod 11 passes through the inner ring of the bearing and is fixedly connected to the inner ring of the bearing. The rotating rod 11 is driven by the driving motor 18 to rotate along its axis. The lever 12 is vertically connected to the rotating rod 11. The rotating rod 11 rotates along its axis under the drive of the driving motor 18, so that the lever 12 can drive the axis of the rotating rod 11 to rotate, and then when adding the reagent, the reaction between the reagent and water is accelerated by rotating the rotating rod 11.

[0021] The second water outlet pipe 8 is connected to the water inlet of the three-way valve 14, the first water outlet of the three-way valve 14 is connected to the industrial water pool, the second water outlet is connected to the intermediate pipe 15, the intermediate pipe 15 is connected to the connecting pipe, the rotating rod 11 is a tube body with a closed lower end, the intermediate pipe 15 is fitted and fixedly connected to the outer ring of the sealing bearing, the upper end of the rotating rod 11 is fitted and fixedly connected to the inner wall of the inner ring of the sealing bearing, so that the intermediate pipe 15 and the rotating rod 11 are rotatably connected through the bearing, and the rotating rod 11 is connected to several downwardly inclined nozzles 13 along its height direction. When the reaction tank 2 needs to be cleaned, the three-way valve 14 is controlled so that the produced water enters the intermediate pipe 15 through the second water outlet, enters the connecting pipe through the intermediate pipe 15, and enters the rotating rod 11 from the connecting pipe and is sprayed out from the nozzle 13, so as to clean the reaction tank 2. At the same time, since the rotating rod 11 rotates, it can ensure that the cleaning is cleaner, and the rotating rod 11 and the intermediate pipe 15 are rotatably connected through the sealing bearing, so that water can enter while the rotating rod 11 rotates.

[0022] A driven wheel 17 is sleeved on the rotating rod 11, and the driven wheel 17 is located above the reaction tank 2. A driving motor 18 is fixedly arranged on the reaction tank 2. The rotating shaft of the driving motor 18 is coaxially fixedly connected with the driving wheel 16. A transmission belt is sleeved between the driving wheel 16 and the driven wheel 17, and the transmission is transmitted through the transmission belt. The rotation of the rotating shaft of the driving motor 18 drives the rotation of the driving wheel 16, and the driving wheel 16 drives the driven wheel 17 to rotate through the transmission belt, thereby driving the rotating rod 11 to rotate.

[0023] The use of the present application, under the premise of satisfying the wastewater treatment requirements, does not need to turn the wastewater into flocs in the reaction tank 2, but only needs to turn it into sewage, so less chemicals are required, which is more cost-effective.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A comprehensive wastewater reuse treatment system, characterized in that: It includes a wastewater collection tank, a reaction tank, a coal-containing wastewater sedimentation tank, coal-containing wastewater treatment equipment and an industrial water tank. The wastewater collection tank is connected with the water inlet of the reaction tank through a first water inlet pipe, the wastewater outlet of the reaction tank is connected with the coal-containing wastewater sedimentation tank through a first water outlet pipe, and the produced water outlet of the reaction tank is connected with the industrial water tank through a second water outlet pipe; the coal-containing wastewater sedimentation tank is connected with the water inlet of the coal-containing wastewater treatment equipment through a second water inlet pipe, the water inlet of the second water inlet pipe is located in the middle of the coal-containing wastewater sedimentation tank, the first water inlet pipe, the second water inlet pipe and the second water outlet pipe are all provided with water pumps, the produced water outlet of the coal-containing wastewater treatment equipment is connected with the industrial water tank through a third water outlet pipe, and the wastewater outlet of the coal-containing wastewater treatment equipment is connected with the coal-containing wastewater sedimentation tank through a fourth water outlet pipe.

2. The comprehensive wastewater reuse treatment system according to claim 1 is characterized in that: A rotating rod is vertically arranged in the reaction tank, the upper end of which passes through the reaction tank and is rotationally connected to the reaction tank through a bearing. The rotating rod is driven by a driving motor to rotate along its axis, and a shifting rod is vertically connected to the rotating rod.

3. The comprehensive wastewater reuse treatment system according to claim 2 is characterized in that: The second water outlet pipe is connected to the water inlet end of a three-way valve, the first water outlet end of the three-way valve is connected to an industrial water pool, the second water outlet end is connected to an intermediate pipe, the intermediate pipe is connected to a connecting pipe, the rotating rod is a pipe body with a closed lower end, the intermediate pipe is coaxial with the rotating rod and is rotatably connected through a sealed bearing, and the rotating rod is connected to several nozzles inclined downward along its height direction.

4. The comprehensive wastewater reuse treatment system according to claim 3 is characterized by: A driven wheel is sleeved on the rotating rod, and the driven wheel is located above the reaction tank. A driving motor is fixedly arranged on the reaction tank, and the rotating shaft of the driving motor is coaxially fixedly connected with the driving wheel. The driving wheel and the driven wheel are driven by a transmission belt.

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