Multi-stage crystallization granulation treatment equipment and system for removing inorganic ions in water

Abstract

The utility model relates to the technical field of water treatment, and discloses a multistage crystallization granulation treatment device and system for removing inorganic ions in water, the treatment device comprises an outer cylinder, a first middle cylinder, a second middle cylinder, an inner cylinder and a base, a first middle cylinder, a second middle cylinder and an inner cylinder are sequentially and coaxially arranged in the outer cylinder from outside to inside, a water and chemical distributing device is arranged at the bottom of the first middle cylinder and connected with a chemical adding pipe, a slag discharging pipe is fixedly connected to the lower portion of the outer cylinder, a water inlet pipe is connected to the bottom of the first middle cylinder, and a water outlet pipe is connected to the bottom of the second middle cylinder. According to the utility model, classification removal of various inorganic ions in water is realized through multi-stage combination of the crystallization and granulation water treatment system, deep removal of high-valence metal ions and inorganic ions can be realized, and the crystallization and granulation water treatment system has the advantages of high operation load, small occupied area, low operation cost, convenience in operation and the like.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, and in particular to a multi-stage crystallization granulation treatment device and system for removing inorganic ions in water. Background Art

[0002] With the development of the national economy, the task of water pollution control is becoming more and more arduous. The removal of inorganic ions in water is an important issue in the field of water treatment. At present, the main process technologies used for the removal of inorganic ions in water include chemical precipitation, ion exchange, membrane concentration and electrochemical methods. The existing process technologies can effectively remove the content of target ions in water in practical applications, but they all have some problems. The chemical precipitation method has a good effect on the removal of a single ion in water, but it cannot obtain a good removal effect in the case of multiple ion removal; the ion exchange method and the membrane separation method are both simple to operate, and the one-time investment cost of the two systems is high. At the same time, during the treatment process, the system needs to be regularly flushed and regenerated, which consumes a large amount of reagents and produces difficult-to-treat intermediate wastewater and waste. The electrochemical method uses an electric field to remove ions from water, which can achieve the purpose of removing multiple ions at the same time, but the equipment is complex, the operating technology requirements are high, and the maintenance cost is high. In practical applications, the above-mentioned process technologies are usually combined and applied, so there are problems such as complex system structure, high maintenance cost and large floor space.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the application and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in the field. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-stage crystallization granulation treatment equipment and system for removing inorganic ions in water, which can achieve deep removal of high-valent metal ions and inorganic ion concentrations, and has the advantages of high operating load, small footprint, low operating cost and convenient operation.

[0005] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions:

[0006] A multi-stage crystallization granulation treatment equipment for removing inorganic ions in water comprises an outer cylinder, a first middle cylinder, a second middle cylinder, an inner cylinder and a base, wherein the outer cylinder is fixedly connected to the top of the base, the first middle cylinder, the second middle cylinder and the inner cylinder are coaxially arranged in sequence from the outside to the inside of the outer cylinder, a water and medicine distribution device is arranged at the bottom of the first middle cylinder, the water and medicine distribution device is connected to a medicine adding pipe, a slag discharge pipe is fixedly connected to the bottom of the outer cylinder, and the bottom of the first middle cylinder is connected to a water inlet pipe.

[0007] Optionally, the water and medicine distribution device is a layout plate provided with water and medicine distribution holes and a guide tube.

[0008] Optionally, an annular water collecting tank is installed on the inner side of the top of the outer cylinder.

[0009] Optionally, a water outlet trough is installed on the outer side of the top of the outer cylinder.

[0010] Optionally, the interior of the inner cylinder is a crystallization granulation zone, the inner cylinder and the first middle cylinder are a circulation zone, the first middle cylinder and the second middle cylinder are a diversion channel, and the second middle cylinder and the outer cylinder are a clear water zone, a solid-liquid separation zone and a sedimentation zone from top to bottom.

[0011] Optionally, both ends of the inner tube are open, and the bottom end of the first middle tube contracts inwards near the inner tube to form a reflux water outlet slit, and local negative pressure provides reflux power.

[0012] Optionally, the top heights of the inner tube, the first middle tube and the second middle tube are increased sequentially to form an overflow structure.

[0013] Optionally, the bottom of the outer cylinder is set as an elliptical bucket bottom, and the outer cylinder, the first middle cylinder, the second middle cylinder and the inner cylinder are connected by welding ribs.

[0014] A multi-stage crystallization granulation system for removing inorganic ions in water comprises treatment equipment and a water collecting tank. A water collecting tank is arranged between two treatment equipments. The water inlet of the water collecting tank is connected to the outer cylinder of the previous treatment equipment, and the water outlet of the water collecting tank is connected to the water inlet pipe of the next treatment equipment.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The crystallization granulation water treatment equipment in the present invention is a multi-cylinder upflow reaction device. Under the action of the equipment structure and the water inlet flow rate, the crystal seeds in the equipment can be fluidized, providing a larger contact area for the crystallization reaction, improving the crystallization reaction efficiency and the removal rate of pollutants. The reflux slits formed between the cylinders are used to form a local negative pressure, provide reflux power for the crystal seeds, and realize the circulation of the crystal seeds inside the equipment.

[0017] The present invention realizes the classified removal of various inorganic ions in water through the multi-stage cascade of the crystallization granulation water treatment system, can achieve the deep removal of high-valent metal ions and inorganic ion concentrations, and has the advantages of high operating load, small footprint, low operating cost and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present disclosure 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 only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The utility model is a structural schematic diagram of a multi-stage crystallization granulation system for removing inorganic ions in water.

[0020] Description of reference numerals:

[0021] 1. Water inlet pipe; 2. Water distribution hole; 3. Inner tube; 4. First middle tube; 5. Second middle tube; 6. Outer tube; 7. Annular water collecting trough; 8. Water outlet trough; 9. Slag discharge pipe; 10. Dosing pipe; 11. Drug distribution hole; 12. Crystallization and granulation area; 13. Circulation area; 14. Diversion area; 15. Clean water area; 16. Solid-liquid separation area; 17. Sedimentation area; 18. Base; 19. Water and drug distribution device; 20. Primary treatment equipment; 21. Secondary treatment equipment; 22. First water collecting tank; 23. Second water collecting tank. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Example

[0023] A multi-stage crystallization granulation treatment equipment for removing inorganic ions in water comprises an outer cylinder 6, a first middle cylinder 4, a second middle cylinder 5, an inner cylinder 3 and a base 18, wherein the outer cylinder 6 is fixedly connected to the top of the base 18, the first middle cylinder 4, the second middle cylinder 5 and the inner cylinder 3 are coaxially arranged in sequence from the outside to the inside of the outer cylinder 6, a water and medicine distribution device 19 is arranged at the bottom of the first middle cylinder 4, and the water and medicine distribution device 19 is connected to a dosing pipe 10, a slag discharge pipe 9 is fixedly connected to the bottom of the outer cylinder 6, and a water inlet pipe 1 is connected to the bottom of the first middle cylinder 4.

[0024] The interior of the inner cylinder 3 is a crystallization granulation zone 12, the inner cylinder 3 and the first middle cylinder 4 are provided with a circulation zone 13, the first middle cylinder 4 and the second middle cylinder 5 are provided with a diversion channel, and the second middle cylinder 5 and the outer cylinder 6 are provided with a clear water zone 15, a solid-liquid separation zone 16 and a sedimentation zone 17 from top to bottom.

[0025] Raw water enters the treatment equipment through the water inlet pipe 1. According to the removal target ions, crystallization reagents are added into the treatment equipment through the dosing pipe 10. The raw water and the crystallization reagents are fully mixed through the water and reagent distribution device 19. In the crystallization granulation area 12, the raw water fully contacts and reacts with the specific crystal seeds pre-added to the equipment, so that the target ions form crystals and adhere to the crystal seeds to achieve the removal purpose. The raw water passes through the circulation area 13, the diversion area 14, the solid-liquid diversion area and the clear water area 15, and then enters the annular water collecting tank 7 and merges into the water outlet tank 8. The formed crystal particles pass through the solid-liquid separation area 16 and then enter the sedimentation area 17. After the system runs for a certain period of time, it is discharged through the slag discharge pipe 9 for resource utilization.

[0026] The bottom of the outer cylinder 6 is set as an elliptical bucket bottom. The outer cylinder 6, the first middle cylinder 4, the second middle cylinder 5 and the inner cylinder 3 are connected by welding ribs to ensure that the raw water can flow normally inside the equipment. Example

[0027] On the basis of the first embodiment, an implementation method of the installation form of the inner tube 3, the first middle tube 4 and the second middle tube 5 is provided:

[0028] Both ends of the inner tube 3 are open, and the bottom end of the first middle tube 4 shrinks inward near the inner tube 3 to form a narrow gap for reflux water. Local negative pressure provides reflux power, and the top heights of the inner tube 3, the first middle tube 4 and the second middle tube 5 increase successively to form an overflow structure.

[0029] Different from the first embodiment, the reflux water slits formed between the cylinders are used to form a local negative pressure, providing reflux power for the seed crystals, making the circulation of the seed crystals inside the device more convenient. Example

[0030] Based on Example 1, a multi-stage crystallization granulation system for removing inorganic ions in water is provided, such as Figure 1 As shown, it includes a primary treatment device 20, a secondary treatment device 21, a first water collecting tank 22 and a second water collecting tank 23;

[0031] The primary treatment equipment and the secondary treatment equipment both include an outer cylinder 6, a first middle cylinder 4, a second middle cylinder 5, an inner cylinder 3 and a base 18. The outer cylinder 6 is fixedly connected to the top of the base 18. The first middle cylinder 4, the second middle cylinder 5 and the inner cylinder 3 are coaxially arranged in sequence from the outside to the inside of the outer cylinder 6. A water and medicine distribution device 19 is arranged at the bottom of the first middle cylinder 4. The water and medicine distribution device 19 is connected to a dosing pipe 10. A slag discharge pipe 9 is fixedly connected to the bottom of the outer cylinder 6. The bottom of the first middle cylinder 4 is connected to a water inlet pipe 1.

[0032] A first water collecting tank 22 is provided between the primary treatment equipment 20 and the secondary treatment equipment 21. The water inlet of the first water collecting tank 22 is connected to the outer cylinder 6 of the primary treatment equipment 20, the water outlet of the first water collecting tank 20 is connected to the water inlet pipe 1 of the secondary treatment equipment 21, and the outer cylinder 6 of the secondary treatment equipment 21 is connected to the second water collecting tank 22.

[0033] Raw water enters the primary treatment equipment through the water inlet pipe 1. According to the removal target ions, crystallization reagents are added to the primary treatment equipment through the dosing pipe 10. The raw water and the crystallization reagent are fully mixed through the water and reagent distribution device 19. In the crystallization granulation area 12, the raw water fully contacts and reacts with the specific crystal seeds pre-added to the equipment, so that the target ions form crystals and adhere to the crystal seeds to achieve the removal purpose. The raw water passes through the circulation area 13, the diversion area 14, the solid-liquid diversion area and the clear water area 15, and then enters the annular water collection tank 7. After merging into the water outlet tank 8, it enters the next level of treatment equipment in the water collection tank. The formed crystalline particles pass through the solid-liquid separation area 16 and then enter the sedimentation area 17. After the system runs for a certain period of time, it is discharged through the slag discharge pipe 9 for resource utilization.

[0034] Different from Example 1, the multi-stage cascade of the crystallization granulation water treatment system is used to achieve the classified removal of various inorganic ions in the water, which can achieve the deep removal of high-valent metal ions and inorganic ion concentrations. It has a high operating load, a small footprint, low operating costs and convenient operation. The crystal seeds in the equipment form a fluidized state, which provides a larger contact area for the crystallization reaction, improves the crystallization reaction efficiency and increases the removal rate of pollutants.

[0035] As a preferred embodiment of this embodiment, the Ca in water 2+ and Mn 2+ Multi-stage recovery is carried out. Specifically, the first stage is used for Mn 2+ Recovery, secondary treatment equipment for Ca 2+ In the recycling, quartz sand crystal particles are used as crystal seeds in the primary treatment equipment, and garnet crystal particles are used as crystal seeds in the secondary treatment equipment. Specifically, alkali solution is used as a crystallization agent in the primary treatment equipment and the secondary treatment equipment;

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only used to explain the relative position relationship, movement, etc. between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0038] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A multi-stage crystallization granulation treatment equipment for removing inorganic ions from water, characterized in that: It includes an outer cylinder, a first middle cylinder, a second middle cylinder, an inner cylinder and a base, wherein the outer cylinder is fixedly connected to the top of the base, the first middle cylinder, the second middle cylinder and the inner cylinder are coaxially arranged in sequence from the outside to the inside of the outer cylinder, a water and medicine distribution device is arranged at the bottom of the first middle cylinder, the water and medicine distribution device is connected to the medicine adding pipe, a slag discharge pipe is fixedly connected to the bottom of the outer cylinder, and the bottom of the first middle cylinder is connected to the water inlet pipe.

2. The multi-stage crystallization granulation treatment equipment for removing inorganic ions in water according to claim 1, characterized in that: The water and medicine distribution device is a layout plate provided with water and medicine distribution holes and a guide pipe.

3. The multi-stage crystallization granulation treatment equipment for removing inorganic ions in water according to claim 1, characterized in that: An annular water collecting tank is installed on the inner side of the top of the outer cylinder.

4. The multi-stage crystallization granulation treatment equipment for removing inorganic ions in water according to claim 1, characterized in that: A water outlet trough is installed on the outer side of the top of the outer cylinder.

5. The multi-stage crystallization granulation treatment equipment for removing inorganic ions in water according to claim 1, characterized in that: The interior of the inner cylinder is a crystallization granulation zone, the inner cylinder and the first middle cylinder are between a circulation zone, the first middle cylinder and the second middle cylinder are between a diversion channel, and the second middle cylinder and the outer cylinder are between the top and the bottom respectively a clear water zone, a solid-liquid separation zone and a sedimentation zone.

6. The multi-stage crystallization granulation treatment equipment for removing inorganic ions in water according to claim 1, characterized in that: Both ends of the inner tube are open, and the bottom end of the first middle tube shrinks inward near the inner tube to form a slit for reflux water, and local negative pressure provides reflux power.

7. The multi-stage crystallization granulation treatment equipment for removing inorganic ions in water according to claim 1, characterized in that: The top heights of the inner tube, the first middle tube and the second middle tube are increased successively to form an overflow structure.

8. The multi-stage crystallization granulation treatment equipment for removing inorganic ions in water according to claim 1, characterized in that: The bottom of the outer cylinder is set as an elliptical bucket bottom, and the outer cylinder, the first middle cylinder, the second middle cylinder and the inner cylinder are connected by welding ribs.

9. A multi-stage crystallization granulation system for removing inorganic ions from water, characterized in that: It comprises several treatment equipment and a water collecting tank as described in any one of claims 1-8, wherein a water collecting tank is arranged between any two treatment equipments, the water inlet of the water collecting tank is connected to the outer cylinder of the previous treatment equipment, and the water outlet of the water collecting tank is connected to the water inlet pipe of the next treatment equipment.

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