Treatment system for preparing industrial water

Abstract

The utility model relates to the technical field of water treatment, and discloses a treatment system for preparing industrial water, which comprises a water taking device, a reaction tank, a sedimentation tank, a filtering device and a clean water tank which are sequentially communicated, an inlet of the water taking device is communicated with river water, the reaction tank and the sedimentation tank are respectively provided with a sludge discharge outlet, and the treatment system further comprises a disinfection device, and a disinfectant outlet of the disinfection device is respectively connected to an inlet of the sedimentation tank and an inlet of the filtering device. According to the treatment system for preparing the industrial water, provided by the utility model, river water is subjected to flocculation, precipitation, disinfection, filtration and the like to realize deep purification, most suspended solids, bacteria and viruses in the water are eliminated, and the industrial water with low microorganism content, turbidity lower than 10mg / L and pH of 6-9 is obtained; the problem that in the prior art, a water treatment system for preparing industrial water from river water lacks a disinfection process, so that the obtained industrial water cannot meet the sodium carbonate production requirement is solved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a treatment system for preparing industrial water. Background Technology

[0002] Soda ash is an important basic chemical raw material, and its production requires a large amount of industrial water, generally used as cooling water, circulating water, and washing water. With rising water prices, the water costs for production enterprises have increased. Considering the water quality requirements in production and the need to reduce costs, industrial water is generally drawn directly from rivers and lakes, and after treatment such as impurity removal, sterilization, and clarification, it is used in various production processes. The industrial water consumption reaches 700-800 cubic meters per second. 3 However, the water quality of rivers is unstable due to factors such as weather, upstream sewage discharge, and soil conditions, and it contains a large amount of sediment. Therefore, how to prepare river and lake water into industrial water for enterprises has become an urgent problem to be solved.

[0003] To address the aforementioned issues, utility model patent CN218810929U discloses a water treatment system for preparing industrial tap water from river water. This system includes a mechanical bar screen, a river water collection tank, a coagulation sedimentation tank, a multi-media filtration system, a multi-media filtration effluent tank, an ultrafiltration membrane system, a temporary storage tank, a flocculant dosing device, a coagulant aid dosing device, a sludge tank, and a plate and frame filter press. River water undergoes flocculation, sedimentation, and filtration processes to produce industrial tap water. However, the flocculation, sedimentation, and filtration methods in this technical solution only provide simple biochemical and physical treatment of the river and lake water. The industrial water produced is not disinfected and therefore cannot meet the requirements for water used in the production of soda ash. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the water treatment system for preparing industrial water from river water in the prior art lacks a disinfection process, so the resulting industrial water cannot meet the requirements for the production of soda ash.

[0005] To solve the above-mentioned technical problems, this utility model provides a treatment system for preparing industrial water, characterized in that it includes a water intake device, a reaction tank, a sedimentation tank, a filtration device, and a clear water tank connected in sequence. The inlet of the water intake device is connected to river water. Both the reaction tank and the sedimentation tank have sludge discharge outlets. It also includes a disinfection device, and the disinfectant outlet of the disinfection device is connected to the inlet of the sedimentation tank and the inlet of the filtration device, respectively.

[0006] As a preferred option, the inlet of the water intake device is also equipped with a rotating filter screen for filtering river water.

[0007] As a preferred embodiment, the disinfection device includes a sodium chlorate tank, a hydrochloric acid tank, a ClO2 generator, a jet pump, and a gas-liquid separator. The sodium chlorate tank and the hydrochloric acid tank are both connected to the inlet of the ClO2 generator. The outlet of the ClO2 generator is connected to the jet pump. The inlet of the jet pump is connected to a direct current water supply. The outlet of the jet pump is connected to the inlet of the gas-liquid separator. The chlorine water outlet of the gas-liquid separator is connected to the inlet of the sedimentation tank. The chlorine gas outlet of the gas-liquid separator is connected to the inlet of the filtration device.

[0008] As a preferred embodiment, the treatment system for preparing industrial water of this utility model further includes an environmentally friendly collection tank and a sedimentation tank. The sludge discharge outlet of the reaction tank and the sludge discharge outlet of the sedimentation tank are both connected to the inlet of the environmentally friendly collection tank. The outlet of the environmentally friendly collection tank is connected to the inlet of the sedimentation tank, and the outlet of the sedimentation tank is connected to the inlet of the sedimentation tank.

[0009] As a preferred embodiment, the treatment system for preparing industrial water of this utility model further includes a dosing device, which includes a dissolving tank and a dosing tank. The dissolving tank is provided with an alkali aluminum inlet and a water inlet. The first outlet of the dissolving tank is connected to the inlet of the dosing tank, the second outlet of the dissolving tank is connected to the inlet of the settling tank, and the outlet of the dosing tank is connected to the inlet of the reaction tank.

[0010] As a preferred embodiment, the treatment system for preparing industrial water of this utility model further includes a mud mixing tank and a horizontal screw centrifuge. The mud inlet of the mud mixing tank is connected to the mud outlet of the settling tank, the mud outlet of the mud mixing tank is connected to the inlet of the horizontal screw centrifuge, the filtrate outlet of the horizontal screw centrifuge is connected to the inlet of the environmental protection collection tank, and the sludge outlet of the horizontal screw centrifuge is connected to the green belt.

[0011] As a preferred embodiment, the reaction tank includes multiple small reaction tanks arranged in multiple rows. The numbering of each small reaction tank starts from the edge of the first row and proceeds in an "S" shape towards the adjacent second row of small reaction tanks. The last small reaction tank is coded as the last small reaction tank in the last row. The river water delivered to the reaction tank flows sequentially along the coding order.

[0012] As a preferred embodiment, there are six reaction tanks arranged in two rows. The first row of reaction tanks, from left to right, consists of the first, fourth, and fifth reaction tanks. The second row of reaction tanks, from left to right, consists of the second, third, and sixth reaction tanks. The inlet of the first reaction tank is connected to the outlet of the water intake device. River water passes through the first, second, third, fourth, fifth, and sixth reaction tanks in sequence. The outlet of the sixth reaction tank is connected to the inlet of the sedimentation tank.

[0013] As a preferred embodiment, the inlets of each reaction tank are sequentially located at the top and middle of each reaction tank according to their coding order, and the water is circulated in sequence. The outlet of the sixth reaction tank is located at its top. The size of the inlet and outlet of each reaction tank increases sequentially according to the numbering order of each reaction tank.

[0014] As a preferred embodiment, a baffle plate is vertically installed inside the sedimentation tank to divide the space of the sedimentation tank into an inlet section and an outlet section. An inlet trough is provided above the baffle plate, and the inlet of the inlet section is connected to the inlet trough. Multiple layers of filter plates are horizontally installed in the outlet section, and the outlet of the inlet section is located at the lower part of the filter plates. The upper part of the sedimentation tank is a cuboid, and the lower part of the sedimentation tank includes multiple cones.

[0015] Compared with the prior art, the treatment system for preparing industrial water according to this embodiment of the utility model has the following advantages:

[0016] This utility model embodiment includes a reaction tank, a sedimentation tank, a disinfection device, and a filtration device. When river water flows through the above devices, it undergoes flocculation, sedimentation, disinfection, and filtration, resulting in deep purification of the river water. This eliminates most of the suspended solids, bacteria, and viruses in the water, producing industrial water with low microbial content, turbidity below 10 mg / L, and a pH of 6-9. This solves the problem in the prior art where the water treatment system for preparing industrial water from river water lacks a disinfection process, resulting in industrial water that cannot meet the requirements for soda ash production. Attached Figure Description

[0017] Figure 1 This is a process flow diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a plan view of the reaction tank and sedimentation tank according to an embodiment of the present invention;

[0019] Figure 3 This is a front view of the reaction tank and sedimentation tank according to an embodiment of the present utility model;

[0020] Figure 4 This is a side view of the reaction tank according to an embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional view of the sedimentation tank according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the sedimentation tank inlet trough according to an embodiment of the present invention.

[0023] In the diagram: 1. Suction well; 2. Reaction tank; 2a. First reaction tank; 2b. Second reaction tank; 2c. Third reaction tank; 2d. Fourth reaction tank; 2e. Fifth reaction tank; 2f. Sixth reaction tank; 3. Sedimentation tank; 3a. Inlet; 3b. Outlet; 4. Siphon filter; 5. Clear water tank; 6. Rotary filter; 7. Disinfection device; 7a. Sodium chlorate tank; 7b. Hydrochloric acid tank; 7c. Cl- O2 generator, 7d, jet pump, 7e, gas-liquid separator, 7f, sodium chlorate dissolving tank, 8, environmental protection collection tank, 9, sedimentation tank, 10, sludge mixing tank, 11, horizontal screw centrifuge, 12, dosing device, 12a, dissolving tank, 12b, dosing tank, 13, water pump, 14, axis of symmetry, 15, inlet of the first reaction tank, 16a, inlet of the second reaction tank, 16b, inlet of the third reaction tank, 16c, inlet of the fourth reaction tank, 16d, inlet of the fifth reaction tank, 16e, inlet of the sixth reaction tank, 17, outlet of the sixth reaction tank, 18, sludge discharge pipe of the reaction tank, 19, sludge discharge outlet of the reaction tank, 20, baffle plate, 21, water collection tank, 22, water inlet tank, 23, sludge discharge outlet of the sedimentation tank, 24, sludge discharge pipe of the sedimentation tank, 25, water outlet tank, 26, PVC honeycomb panel. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer" and other terms used in this utility model to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figure 1 As shown, a preferred embodiment of this utility model provides a treatment system for preparing industrial water, comprising a water intake device, a reaction tank 2, a sedimentation tank 3, a filtration device 4, and a clear water tank 5 connected in sequence. The inlet of the water intake device is connected to river water. Both the reaction tank 2 and the sedimentation tank 3 have sludge discharge outlets. The system also includes a disinfection device 7, whose disinfectant outlet is connected to the inlet of the sedimentation tank 3 and the inlet of the filtration device, respectively. When river water flows through the reaction tank, sedimentation tank, disinfection device, and filtration device, it undergoes flocculation, sedimentation, disinfection, and filtration, achieving deep purification of the river water. This eliminates most suspended solids, bacteria, and viruses in the water, resulting in industrial water with low microbial content, turbidity below 10 mg / L, and a pH of 6-9.

[0029] Based on the above technical features, in this embodiment, there are two reaction tanks 2 and two sedimentation tanks 3. The two reaction tanks 2 are arranged in a mirror image along the axis of symmetry 14, and the two sedimentation tanks 2 are arranged in a mirror image along the axis of symmetry 14. Correspondingly, there are also two filtration devices. The water intake device is preferably a water intake well 1, and the filtration device is preferably a siphon filter 4.

[0030] In the treatment system for preparing industrial water in this embodiment, the inlet of the suction well 1 is connected to river water and is equipped with a rotating filter screen 6 for filtering the river water. While filtering impurities from the river water, the rotating filter screen 6 can also automatically rotate to transport impurities within the screen to a collection box. Simultaneously, high-pressure water is used to rinse the filter screen, allowing the water pump to be cleaned without shutting down, thus avoiding frequent pump shutdowns for maintenance due to impurities being sucked in. It should be noted that the rotating filter screen 6 is existing equipment, and the filtration and transport of impurities implemented in this embodiment are based on the existing functions of the existing equipment, which will not be elaborated further here.

[0031] The river water, after being filtered by the rotating filter screen 6, has had larger impurities and hair removed. It is then collected in the suction well 1 for buffering. The suction well 1 has two outlets, which are connected to the inlets 15 of each reaction tank by pipes. Valves and water pumps are installed in the middle of the pipes to control the water flow and provide power for the water flow.

[0032] In the treatment system for preparing industrial water in this embodiment, the disinfection device 7 includes a sodium chlorate dissolving tank 7f, a sodium chlorate tank 7a, a hydrochloric acid tank 7b, a ClO2 generator 7c, a jet pump 7d, and a gas-liquid separator 7e. The sodium chlorate tank 7a and the hydrochloric acid tank 7b are simultaneously connected to the inlet of the ClO2 generator 7c. The outlet of the ClO2 generator 7c is connected to the jet pump 7d. The inlet of the jet pump 7d is connected to direct water, and the outlet of the jet pump 7d is connected to the inlet of the gas-liquid separator 7e. The gas-liquid separator 7e has two chlorine water outlets and two chlorine gas outlets. The chlorine water outlets of the gas-liquid separator 7e are respectively connected to the inlets of two sedimentation tanks 3, and the chlorine gas outlets of the gas-liquid separator 7e are respectively connected to the inlets of two siphon filters 4.

[0033] In use, sodium chlorate is first dissolved in sodium chlorate dissolving tank 7f to prepare an aqueous solution, which is then stored in sodium chlorate tank 7a. Then, the valve is opened to pump the sodium chlorate solution and hydrochloric acid solution in sodium chlorate tank 7a and hydrochloric acid tank 7b to Cl O2 generator 7c to react and produce Cl O2 and Cl2. The generated Cl O2 and Cl2 are drawn into jet pump 7d and mixed with direct current water. The resulting solution and undissolved Cl2 are sent to gas-liquid separator 7e by jet pump 7d for gas-liquid separation to obtain chlorine water and chlorine gas. Finally, the generated chlorine water and chlorine gas are added to sedimentation tank 3 and siphon filter tank 4 respectively through pipelines.

[0034] The treatment system for preparing industrial water in this embodiment is also equipped with an environmentally friendly collection tank 8, a settling tank 9, a sludge mixing tank 10, and a horizontal screw centrifuge 11. The sludge discharge outlet 19 of the reaction tank 2 and the sludge discharge outlet 23 of the sedimentation tank 3 are connected to the inlet of the environmentally friendly collection tank 8 through a sludge discharge pipe. The outlet of the environmentally friendly collection tank 8 is connected to the inlet of the settling tank 9. The outlet of the settling tank 9 is connected to the inlet of the sedimentation tank 3. The sludge inlet of the sludge mixing tank 10 is connected to the sludge outlet of the settling tank 9. The sludge outlet of the sludge mixing tank 10 is connected to the inlet of the horizontal screw centrifuge 11. The filtrate outlet of the horizontal screw centrifuge 11 is connected to the inlet of the environmentally friendly collection tank 8. The sludge outlet of the horizontal screw centrifuge 11 is connected to the green belt.

[0035] During the treatment process, after the river water impurities in reaction tank 2 and sedimentation tank 3 settle, the sewage at the bottom of the tank is pumped out by a sewage pump through a pipeline and transported to environmental collection tank 8. The sewage in environmental collection tank 8 is pumped into sedimentation tank 9 by a sewage pump, and then the alkaline aluminum aqueous solution is pumped to sedimentation tank 9 through dosing device 12 for flocculation and sedimentation. After the reaction and sedimentation are completed, the clear liquid at the top of sedimentation tank 9 flows out from the outlet and enters sedimentation tank 3, while the sludge at the bottom flows through the sludge outlet into sludge mixing tank 10. Then, the valve is opened, and the sludge water is pumped into horizontal screw centrifuge 11 for separation. The separated sludge is transported to the green belt for landscaping, and the separated liquid flows back to environmental collection tank 8 through the filtrate outlet along the pipeline for further treatment. This achieves efficient recycling of sewage and conforms to the concept of green environmental protection.

[0036] The treatment system for preparing industrial water in this embodiment is also equipped with a dosing device 12, such as... Figure 1 As shown, the dosing device 12 includes a dissolving tank 12a and a dosing tank 12b. The dissolving tank 12a is equipped with an aluminum alkali inlet and a water inlet for preparing an aluminum alkali aqueous solution. A main pipe is installed at the outlet of the dissolving tank 12a, and the end of the main pipe is connected to the inlet of a water pump. The outlet of the water pump is connected to two branch pipes. The first branch pipe is connected to the inlet of the dosing tank 12b, and the second branch pipe is connected to the inlet of the settling tank 9. In use, the water pump is turned on to pump the aluminum alkali aqueous solution in the dissolving tank 12a to the dosing tank 12b and the settling tank 9 respectively. The dosing tank 12b is connected to the inlet of the reaction tank 2 through a pipe. A valve is installed on the pipe. When water flows into the reaction tank 2, the valve is opened to add the aluminum alkali aqueous solution in the dosing tank 12b into the reaction tank 2.

[0037] The outlet of the suction well 1 is connected to the inlet of the reaction tank 2. After the water pump 13 transports the river water in the suction well 1 to the reaction tank 2, aluminum alkali is added to the reaction tank 2 through the dosing device 12, which causes a flocculation reaction, causing the fine impurities and dissolved organic matter in the water to stick together, clump together and precipitate.

[0038] It should be noted that in this embodiment, there are two reaction tanks 2 and two sedimentation tanks 3, and the two reaction tanks 2 are arranged in a mirror image along the axis of symmetry 14, and the two sedimentation tanks 3 are arranged in a mirror image along the axis of symmetry 14. Therefore, the following description only refers to the reaction tank and sedimentation tank below the axis of symmetry 14. The planar arrangement of the reaction tank 2 and sedimentation tank 3 is as follows: Figure 2 As shown.

[0039] To ensure rapid and uniform flocculation within the reaction tank, a stirring device is typically added to reaction tank 2. This not only consumes electrical energy but also hinders the deposition of impurities in the tank. Therefore, the embodiments of this application address the problems of energy consumption and impediment settling associated with stirring devices, such as... Figures 2 to 4As shown, the reaction tank is designed as follows: a reaction tank 2 consists of six small reaction tanks arranged in two rows. The upper part of the inner cavity of each small reaction tank is a cuboid and the lower part is a cone. The cone-shaped structure is more conducive to the sedimentation and separation of impurities. The first row of reaction tanks, from left to right, are reaction tank 2a, reaction tank 2d, and reaction tank 2e. The second row of reaction tanks, from left to right, are reaction tank 2b, reaction tank 2c, and reaction tank 2f. The inlet 15 of reaction tank 2a is connected to the outlet of the suction well 1. River water passes through reaction tanks 2a, 2b, 2c, 2d, 2e, and 2f in sequence. The outlet 17 of reaction tank 2f is connected to the inlet of sedimentation tank 3. The inlets of each reaction tank are arranged in the upper and middle parts of each tank according to their coding order, and circulate in sequence. The outlet 17 of reaction tank 2f is located at its upper part. The size of the inlet and outlet of each reaction tank increases in sequence according to the numbering order of each reaction tank.

[0040] When the system is working, the water pump 13 sends river water into the first reaction tank 2a through the upper inlet 15, then into the second reaction tank 2b through the middle inlet 16a, and then into the third reaction tank 2c through the upper inlet 16b. The same process continues, with the river water flowing into the fourth reaction tank 2d through the middle inlet 16c, then into the fifth reaction tank 2e through the upper inlet 16d, and then into the sixth reaction tank 2f through the upper inlet 16e. Finally, the water flows into the sedimentation tank 3 through the upper outlet 17 of the sixth reaction tank 2f. Water flows in and out of reaction tank 2 alternately, with the flow rate gradually decreasing. This creates intense turbulence in the first half of the process, eliminating the need for a stirring device. This allows the alkaline aluminum and water to mix evenly and react fully to quickly form tiny flocs. As the opening of the small tank increases, the water flow gradually slows down, allowing the tiny flocs to collide and be adsorbed fully, greatly improving the flocculation efficiency.

[0041] Each reaction tank is equipped with a sludge discharge outlet 19 at the bottom and connected to a sludge discharge pipe 18. After impurities in the water settle through the cone, they are pumped out through the pipe and transported to the environmental protection collection tank 8.

[0042] River water undergoes flocculation treatment in reaction tank 2 before flowing into sedimentation tank 3, such as Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, the upper part of the sedimentation tank 3 is a cuboid, and the lower part includes multiple cones. The cone-shaped structure is more conducive to the sedimentation and separation of impurities. A water baffle 20 is vertically installed inside the sedimentation tank 3 to divide the space of the sedimentation tank 3 into an inlet section 3a and an outlet section 3b. An inlet trough 22 is provided above the water baffle 20. The inlet of the inlet section 3a is connected to the inlet trough 22. Multiple layers of filter plates are horizontally arranged in the outlet section 3b. In this embodiment, the filter plates are made of PVC honeycomb panels 26. Multiple layers of PVC honeycomb panels 26 are glued together, forming a hexagonal grid of about 4-5 cm between the panels, which is conducive to the adsorption of sediment in the water.

[0043] In the treatment system for preparing industrial water in this embodiment, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the baffle plate 20 of the sedimentation tank 3 extends downward to the lower part of the PVC honeycomb panel 26, so that the outlet of the inlet 3a is located at the lower part of the PVC honeycomb panel 26, ensuring that the inlet water flows upward from the lower part of the PVC honeycomb panel 26, realizing the secondary filtration of river water by the PVC honeycomb panel 26. Furthermore, an inlet trough 22 is provided above the baffle plate 20 to prevent a large amount of inlet water from directly rushing into the sedimentation tank 3, agitating the sediment at the bottom of the tank, and weakening the sedimentation effect of the sedimentation tank 3. The baffle plate 20 is preferably a folded plate, folded outward towards the outlet 3b below the surface of the PVC honeycomb panel 26, thereby widening the outlet of the inlet 3a, reducing the flow velocity, and avoiding agitation of sediment at the bottom of the tank. In addition, multiple water collection troughs 21 are provided above the sedimentation tank 3, each with a row of overflow holes on both sides, and an outlet trough 25 is provided at one end of the water collection trough. The supernatant in sedimentation tank 3 flows out through the overflow hole, which will not cause the flow to be biased. At the same time, it also improves the mixing degree of disinfectant and water. The supernatant after disinfection flows through the collection tank 21 to the outlet tank 25 and then to the siphon filter tank 4.

[0044] When the system is working, river water flows into sedimentation tank 3 from the inlet trough 22. Due to the presence of baffle plate 20, the river water flows directly to the bottom of sedimentation tank 3 and then flows upward. It is filtered through PVC honeycomb plate 26 to obtain the supernatant in sedimentation tank 3. In order to eliminate microorganisms in the river water, disinfection device 7 introduces chlorine disinfectant into the supernatant in sedimentation tank 3 for disinfection. The disinfected supernatant flows into collection trough 21 through overflow hole and then flows to siphon filter tank 4 through outlet trough 25.

[0045] In the treatment system for preparing industrial water in this embodiment, the filtration device is preferably a siphon filter 4. At the inlet of the siphon filter 4, the disinfection device 7 introduces chlorine gas into the water through a pipe for further disinfection and sterilization. After filtration by the siphon filter 4, the treated effluent has a low microbial content, a turbidity of less than 10 mg / L, and a pH of 6-9, which meets the requirements for water for alkali production. The treated river water is then transported through a pipe to a clear water tank 5 for temporary storage.

[0046] Similarly, each cone in the sedimentation tank 3 is equipped with a sludge discharge outlet 23 at its bottom and is connected to a sludge discharge pipe 24. After the impurities in the water settle through the cone, they are pumped to the environmental protection collection tank 8 through the pipe.

[0047] The working process of this utility model is as follows: River water is filtered through a rotating filter screen 6 and then flows into a suction well 1 for temporary storage. The river water in the suction well 1 is then pumped into a reaction tank 2 by a water pump 13. After the river water enters the reaction tank 2, aluminum alkali is added to the reaction tank 2 through a dosing device 12. The river water then undergoes a flocculation reaction, and the water flows out alternately from the first to the sixth reaction tank, allowing for a complete reaction. After impurities settle, a supernatant is obtained. This supernatant flows into a sedimentation tank 3 through an inlet trough 22. Due to the presence of a baffle plate 20, the river water flows directly to the bottom of the sedimentation tank 3 and then flows upwards, passing through a PVC honeycomb plate 26 for filtration, resulting in the supernatant in the sedimentation tank 3. Afterwards, a chlorine disinfectant solution is introduced into the upper supernatant by a disinfection system 7 for disinfection. The disinfected supernatant flows through a collection trough 21 to an outlet trough 25 and then to a siphon filter tank 4. Chlorine gas generated by the disinfection device 7 is introduced into the inlet of the siphon filter 4 for further disinfection and sterilization. The impurities are then filtered through the siphon filter 4 and finally flow to the clear water tank 5 for temporary storage.

[0048] The sludge from the lower part of reaction tank 2 and sedimentation tank 3 is pumped to environmental collection tank 8 after being settled by the cone. The sewage in environmental collection tank 8 is pumped into sedimentation tank 9 by sewage pump, and aluminum hydroxide is added by dosing device 12 for flocculation and sedimentation. The clear liquid in sedimentation tank 9 flows back to sedimentation tank 3 through pipeline, and the sludge at the bottom flows to sludge mixing tank 10 and is then sent to horizontal screw centrifuge 11 for separation. The separated sludge is transported to the green belt, and the separated filtrate flows back to environmental collection tank 8 for further treatment.

[0049] In summary, this utility model provides a treatment system for preparing industrial water. A rotating filter screen is installed at the water intake well inlet, effectively filtering out larger impurities in the river water and significantly reducing frequent pump shutdowns for maintenance due to impurities. The river water flows alternately up and down in the reaction tank, with the flow rate gradually decreasing, thus eliminating the need for a stirring device and ensuring uniform and thorough mixing and reaction of alkali-aluminum and water, greatly improving flocculation efficiency. The inlet trough and baffle plate in the sedimentation tank not only improve the filtration efficiency of the PVC honeycomb panels but also prevent large amounts of water from directly flooding the sedimentation tank and weakening its settling effect. Wastewater is treated through a settling tank, mud mixing tank, and horizontal screw centrifuge, achieving efficient wastewater recycling and aligning with green environmental protection principles. Most importantly, the water treated through multiple processes—reaction tank, sedimentation tank, disinfection system, and siphon filter—has low microbial content, turbidity below 10 mg / L, and a pH of 6-9, meeting the water requirements of the alkali production industry. Furthermore, it reduces equipment scaling and clogging, saving water costs for enterprises.

[0050] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A treatment system for producing industrial water, characterized in that, The system comprises a water taking device (1), a reaction tank (2), a sedimentation tank (3), a filter device (4) and a clean water tank (5) connected in sequence, the inlet of the water taking device (1) is connected with river water, the reaction tank (2) and the sedimentation tank (3) each have a sludge discharge outlet; The system for preparing industrial water further comprises a disinfection device (7), the disinfection agent outlet of the disinfection device (7) is connected at the inlet of the sedimentation tank (3) and the inlet of the filter device (4) respectively; The reaction tank (2) comprises a plurality of reaction sub-pools, the plurality of reaction sub-pools are arranged in multiple rows, the numbers of the reaction sub-pools are coded in an "S" shape from the edge of the first row to the adjacent second row of reaction sub-pools, and the coding of the last reaction sub-pool is the last reaction sub-pool of the last row, the river water delivered into the reaction tank flows in the coding order; The number of the reaction sub-pools is six, the six reaction sub-pools are arranged in two rows, the first row of reaction sub-pools from left to right are the first reaction sub-pool (2a), the fourth reaction sub-pool (2d) and the fifth reaction sub-pool (2e), the second row of reaction sub-pools from left to right are the second reaction sub-pool (2b), the third reaction sub-pool (2c) and the sixth reaction sub-pool (2f), the water inlet (15) of the first reaction sub-pool (2a) is connected with the outlet of the water taking device (1), the river water sequentially passes through the first reaction sub-pool (2a), the second reaction sub-pool (2b), the third reaction sub-pool (2c), the fourth reaction sub-pool (2d), the fifth reaction sub-pool (2e) and the sixth reaction sub-pool (2f), and the water outlet (17) of the sixth reaction sub-pool (2f) is connected with the inlet of the sedimentation tank (3); The water inlets of the reaction sub-pools are sequentially arranged in the upper part and the middle part of each reaction sub-pool in the coding order, and sequentially circulate, the water outlet (17) of the sixth reaction sub-pool (2f) is arranged in the upper part thereof, and the size of the water inlet and the size of the water outlet of each reaction sub-pool sequentially increase in the number order of the reaction sub-pools.

2. The treatment system for producing industrial water according to claim 1, characterized by, The inlet of the water taking device (1) is further provided with a rotating filter screen (6) for filtering the river water.

3. The treatment system for producing industrial water according to claim 1, characterized by, The disinfection device (7) comprises a sodium chlorate barrel (7a), a hydrochloric acid barrel (7b), a ClO2 generator (7c), a jet pump (7d) and a gas-liquid separator (7e), the sodium chlorate barrel (7a) and the hydrochloric acid barrel (7b) are simultaneously connected with the inlet of the ClO2 generator (7c), the outlet of the ClO2 generator (7c) is connected with the jet pump (7d), the inlet of the jet pump (7d) is connected with direct current water, the outlet of the jet pump (7d) is connected with the inlet of the gas-liquid separator (7e), the chlorine water outlet of the gas-liquid separator (7e) is connected with the inlet of the sedimentation tank (3), and the chlorine gas outlet of the gas-liquid separator (7e) is connected with the inlet of the filter device (4).

4. The treatment system for producing industrial water according to any one of claims 1 to 3, characterized in that, The device further comprises an environmental protection collecting tank (8) and a settler (9), the sludge discharge outlet of the reaction tank (2) and the sludge discharge outlet of the sedimentation tank (3) are connected to the inlet of the environmental protection collecting tank (8), the outlet of the environmental protection collecting tank (8) is communicated with the inlet of the settler (9), and the water outlet of the settler (9) is communicated with the inlet of the sedimentation tank (3).

5. The treatment system for producing industrial water according to claim 4, characterized in that, The device further comprises a dosing device (12), the dosing device (12) comprises a medicine dissolving barrel (12a) and a medicine feeding barrel (12b), the medicine dissolving barrel (12a) is provided with an alkali inlet and a water inlet, the first outlet of the medicine dissolving barrel (12a) is connected to the inlet of the medicine feeding barrel (12b), the second outlet of the medicine dissolving barrel (12a) is connected to the inlet of the settler (9), and the outlet of the medicine feeding barrel (12b) is connected to the inlet of the reaction tank (2).

6. The treatment system for producing industrial water according to claim 5, characterized in that, The device further comprises a slurry stirring barrel (10) and a horizontal screw centrifuge (11), the slurry inlet of the slurry stirring barrel (10) is communicated with the slurry outlet of the settler (9), the slurry outlet of the slurry stirring barrel (10) is connected to the inlet of the horizontal screw centrifuge (11), the filtrate outlet of the horizontal screw centrifuge (11) is connected to the inlet of the environmental protection collecting tank (8), and the sludge outlet of the horizontal screw centrifuge (11) is communicated to a green belt.

7. The treatment system for producing industrial water according to any one of claims 1 to 3, characterized by, A waterproof board (20) is vertically arranged in the sedimentation tank (3) to divide the space of the sedimentation tank (3) into a water inlet part (3a) and a water outlet part (3b), a water inlet groove (22) is arranged above the waterproof board (20), the inlet of the water inlet part (3a) is communicated with the water inlet groove (22), a plurality of filter plates (26) are horizontally arranged in the water outlet part (3b), the outlet of the water inlet part (3a) is arranged at the lower part of the filter plates (26), the upper part of the sedimentation tank is a cuboid, and the lower part of the sedimentation tank comprises a plurality of cones.

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