Dry discharge system for low-concentration slag-containing wastewater
Through the two-stage cyclone plus dehydration treatment process of the concentrated cyclone and dry-discharge integrated unit, the problem of low-concentration slag-containing wastewater treatment is solved, efficient solid-liquid separation and water resource recycling is achieved, and equipment land occupation and investment costs are reduced.
Patent Information
- Application Number
- CN202422542509.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing technology has difficulty in treating low-concentration slag-containing wastewater, low operating efficiency of equipment, poor dehydration effect, large area of equipment, high investment, and low water resource recycling rate.
The two-stage cyclone plus dehydration treatment process of the concentrated cyclone and the dry-drain integrated unit is adopted, including the concentrated cyclone and the dry-drain cyclone and the dehydration screen. Solid-liquid separation is achieved through primary concentration and secondary concentration and dehydration treatment.
It realizes efficient solid-liquid separation, improves the solid content of wastewater, reduces the equipment area and investment cost, improves the recycling rate of water resources, and enhances the dehydration effect.
Smart Images
Figure CN223268528U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tailings dry discharge and dehydration treatment, and in particular to a low-concentration slag-containing wastewater dry discharge system. Background Art
[0002] In the process of industrial production, a large amount of low-concentration slag-containing wastewater is often produced. The problem of mine tailings water treatment has always been a difficult problem in mine wastewater treatment.
[0003] In the existing technology, these sites usually use a wet discharge method of solid-liquid separation using a sand-water separator or sedimentation tank. However, due to the low solid content of the raw materials and the large water flow rate, the sand-water separator can only separate a small amount of coarse solid particles, and the overflow is serious. The use of a sedimentation tank will cause serious siltation in the sedimentation tank, requiring regular discharge. In addition, the water overflowed from the sedimentation tank and returned to the circulating water tank has a high solid content, which causes serious pipe wear and affects the operation of the system. In comparison, dry tailings discharge has the advantages of small footprint, low investment, high water resource recycling rate, and environmental protection. This technology has developed rapidly in recent years. The current common dry tailings dewatering technology generally mixes tailings from different stages of the mineral processing process to form a comprehensive tailings, and then dewaters the comprehensive tailings, or directly uses a cyclone or filter to directly treat low-concentration slurry. However, this process results in low slurry concentration and large volume treated by the dewatering equipment, low equipment operating efficiency, and poor dewatering effect.
[0004] Therefore, there is an urgent need for a low-concentration slag-containing wastewater dry discharge system with a simple structure, large processing capacity and high efficiency. Utility Model Content
[0005] The purpose of this application is to provide a low-concentration slag-containing wastewater dry discharge system to solve the problems existing in the prior art, such as the difficulty in purifying low-concentration slag-containing wastewater, low equipment operating efficiency, and poor waste slag dehydration effect.
[0006] The embodiments of the present application can be implemented through the following technical solutions:
[0007] A low-concentration slag-containing wastewater dry drainage system, comprising a concentrating cyclone and a dry drainage integrated unit, wherein one outlet of the concentrating cyclone is connected to a clear water tank, and the other outlet is connected to a feed end of the dry drainage integrated unit;
[0008] The dry-drainage integrated unit includes a dry-drainage cyclone, a dewatering screen, and a bottom pump pool. The bottom pump pool is the feed end of the dry-drainage integrated unit and is connected to the feed port of the dry-drainage cyclone. The second overflow port of the dry-drainage cyclone is simultaneously connected to the clear water tank and the bottom pump pool. The second bottom flow port of the dry-drainage cyclone is connected to the dewatering screen. The above-screen product of the dewatering screen is discharged, and the below-screen product of the dewatering screen flows into the bottom pump pool.
[0009] Furthermore, the concentrating cyclone and the dry-discharge integrated unit are arranged at different heights in the vertical direction, and the concentrating cyclone is arranged at a higher position than the dry-discharge integrated unit.
[0010] Furthermore, the dry-drainage integrated unit further includes a slurry pump, which is connected between the bottom pump pool and the inlet of the dry-drainage cyclone.
[0011] Furthermore, the dry-drain integrated unit also includes an overflow box, and the second overflow port is connected to the clean water tank and the bottom pump tank respectively through the overflow box.
[0012] Furthermore, the second underflow port extends downward, and the screen surface of the dewatering screen is arranged below the second underflow port.
[0013] Furthermore, the bottom pump pool is arranged below the dewatering screen.
[0014] The embodiment of the present application provides a low-concentration slag-containing wastewater dry drainage system that has at least the following beneficial effects:
[0015] The present application realizes efficient solid-liquid separation through a two-stage cyclone plus dehydration and dry discharge treatment process, wherein the first-stage concentrating cyclone concentrates the raw materials to increase the solid content of the wastewater; the second-stage dry discharge cyclone further concentrates, and the dewatering screen dehydrates the concentrated slurry, thereby realizing the purification of low-concentration slag-containing wastewater and the dry discharge of waste slag. It is suitable for treating wastewater with low solid content and large water flow, and has the advantages of simple structure, large treatment capacity, high efficiency, low construction cost and high cost performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the installation of the concentrating cyclone in this application;
[0017] Figure 2 This is a schematic diagram of the overall structure of the dry-discharge integrated unit in this application.
[0018] Numbers in the figure
[0019] 1-concentrating cyclone; 11-first feed port; 13-first overflow port; 14-first underflow port; 2-bracket;
[0020] 3-dry discharge cyclone; 31-second overflow port; 32-second underflow port; 4-dewatering screen; 5-bottom pump pool; 6-overflow box; 7-slurry pump. DETAILED DESCRIPTION
[0021] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.
[0022] In addition, for ease of understanding, various components in the drawings are enlarged (thickened) or reduced (thinned), but this practice is not intended to limit the scope of protection of this application.
[0023] Words importing the singular include the plural and vice versa.
[0024] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the products of the embodiments of the present application are usually placed when in use, they are only for the convenience of describing the present application and simplifying the description, and do 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 on the present application. In addition, in the description of the present application, in order to distinguish different units, words such as first and second are used in this specification, but these are not limited by the order of manufacture, nor can they be understood as indicating or implying relative importance. Their names may be different in the detailed description and claims of the present application.
[0025] The vocabulary in this specification is used to illustrate the embodiments of the present application, but is not intended to limit the present application. It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "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, a direct connection, an indirect connection through an intermediate medium, or a communication between the two components. For those skilled in the art, the specific meanings of the above terms in this application can be specifically understood.
[0026] like Figure 1 、 Figure 2 As shown, a low-concentration slag-containing wastewater dry discharge system includes a concentrating cyclone 1 and a dry discharge integrated unit. One outlet of the concentrating cyclone 1 is connected to a clear water tank, and the other outlet is connected to the feed end of the dry discharge integrated unit. The concentrating cyclone 1 is used to concentrate the incoming low-concentration wastewater. The overflow wastewater (supernatant) after concentration is used as recycled water, and the underflow enters the dry discharge integrated unit for subsequent treatment.
[0027] Furthermore, the dry drainage integrated unit includes a dry drainage cyclone 3, a dewatering screen 4, and a bottom pump pool 5. The bottom pump pool 5 serves as the feed end of the dry drainage integrated unit and is connected to an outlet of the dry drainage integrated unit, and is connected to the feed port of the dry drainage cyclone 3. The dry drainage cyclone 3 is used to further grade and concentrate the concentrated low-concentration wastewater.
[0028] Furthermore, the second overflow port 31 of the dry discharge cyclone 3 is connected to the clean water tank and the bottom pump tank 5 at the same time, so that the overflowing water can partially enter the clean water tank and partially flow back into the bottom pump tank 5 to maintain the bottom liquid level in the bottom pump tank 5 stable, ensuring that the bottom pump tank 5 can stably supply low-concentration slag-containing wastewater to the dry discharge cyclone 3.
[0029] Furthermore, the second bottom flow port 32 of the dry cyclone 3 is connected to the dewatering screen 4 , the above-screen product of the dewatering screen 4 is discharged, and the below-screen product of the dewatering screen 4 flows into the bottom pump pool 5 to ensure the concentration of the bottom pump pool 5 .
[0030] The arrangement of the bottom pump pool 5 can effectively ensure the concentration of wastewater flowing into the dry discharge cyclone 3, so that the wastewater after the concentration treatment by the dry discharge cyclone 3 can be guaranteed to have a higher concentration, and can be better dehydrated under the action of the dehydration screen.
[0031] Specifically, such as Figure 1 As shown, the concentrating cyclone 1 is supported and fixed in position by a bracket 2. The concentrating cyclone 1 includes a first feed port 11, a first overflow port 13, and a first bottom flow port 14. The first overflow port 13 is connected to the clean water tank, and the first bottom flow port 14 extends downward to connect with the bottom pump tank 5, so that the concentrated bottom flow enters the dry-discharge integrated unit through the first bottom flow port 14 as feed.
[0032] In some preferred embodiments, the concentrating cyclone 1 and the dry-discharge integrated unit are arranged at different heights in the vertical direction. The concentrating cyclone 1 is arranged at a higher position than the dry-discharge integrated unit, so that the concentrated bottom flow discharged from the concentrating cyclone 1 can directly enter the dry-discharge integrated unit. Compared with the arrangement in the same horizontal plane, the accumulation of large-particle materials in the bottom flow under the action of gravity is effectively avoided.
[0033] In some preferred embodiments, the dry-drainage integrated unit further includes a slurry pump 7, which is connected between the bottom pump pool 5 and the feed inlet of the dry-drainage cyclone 3. The slurry pump 7 is used to pump the material in the pump pool into the dry-drainage cyclone.
[0034] In some preferred embodiments, the dry-drain integrated unit also includes an overflow box 6, and the second overflow port 31 is connected to the clean water tank and the bottom pump tank 5 respectively through the overflow box 6. The overflow box 6 is used to collect wastewater overflowing from the second overflow port 31. The wastewater in the overflow box 6 is transported to the clean water tank and the bottom pump tank 5 respectively through two different pipes to prevent the water inside the bottom pump tank 5 from being emptied.
[0035] In some preferred embodiments, the second underflow port 32 extends downward, and the screen surface of the dewatering screen 4 is arranged below the second underflow port 32 to improve screening efficiency, prevent material blockage, and optimize material flow.
[0036] In some preferred embodiments, the bottom pump pool 5 is disposed below the dewatering screen 4 to collect the undersize product of the dewatering screen 4 .
[0037] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications can be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.
Claims
1. A low-concentration slag-containing wastewater dry drainage system, characterized in that: include: A concentrating cyclone (1) and a dry-discharge integrated unit, wherein one outlet of the concentrating cyclone (1) is connected to a clear water tank, and the other outlet is connected to a feed end of the dry-discharge integrated unit; The dry-drainage integrated unit comprises a dry-drainage cyclone (3), a dewatering screen (4), and a bottom pump pool (5). The bottom pump pool (5) is the feed end of the dry-drainage integrated unit and is connected to the feed port of the dry-drainage cyclone (3). The second overflow port (31) of the dry-drainage cyclone (3) is simultaneously connected to the clear water tank and the bottom pump pool (5). The second bottom flow port (32) of the dry-drainage cyclone (3) is connected to the dewatering screen (4). The above-screen product of the dewatering screen (4) is discharged, and the below-screen product of the dewatering screen (4) flows into the bottom pump pool (5).
2. The low-concentration slag-containing wastewater dry drainage system according to claim 1 is characterized by: The concentrating cyclone (1) and the dry-discharge integrated unit are arranged at different heights in the vertical direction, and the concentrating cyclone (1) is arranged at a higher position than the dry-discharge integrated unit.
3. The low-concentration slag-containing wastewater dry drainage system according to claim 1, characterized in that: The dry-discharge integrated unit further comprises a slurry pump (7), and the slurry pump (7) is connected between the bottom pump pool (5) and the feed inlet of the dry-discharge cyclone (3).
4. The low-concentration slag-containing wastewater dry drainage system according to claim 1, characterized in that: The dry-discharge integrated unit further comprises an overflow box (6), and the second overflow port (31) is connected to the clean water tank and the bottom pump tank (5) respectively through the overflow box (6).
5. The low-concentration slag-containing wastewater dry drainage system according to claim 1 is characterized by: The second bottom flow outlet (32) extends downward, and the screen surface of the dewatering screen (4) is arranged below the second bottom flow outlet (32).
6. The low-concentration slag-containing wastewater dry drainage system according to claim 1, characterized in that: The bottom pump pool (5) is arranged below the dewatering screen (4).