CN114835323B - Intelligent allocation and stable standard-reaching discharge system for hypersalinity mine water resources - Google Patents
Intelligent allocation and stable standard-reaching discharge system for hypersalinity mine water resources Download PDFInfo
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Abstract
The invention discloses an intelligent allocation and stable standard-reaching discharge system for high-mineralization mine water resources, wherein a water supply pipe of the high-mineralization mine water is communicated with an inlet of an adjusting water tank, an outlet of the adjusting water tank is divided into two paths, one path is communicated with the inlet of a pretreatment system through a pretreatment water inlet pump, the other path is communicated with the inlet of a comprehensive water tank through a raw water conveying pump, a water outlet of the pretreatment system is communicated with an inlet of an intermediate water tank, an outlet of the intermediate water tank is communicated with an inlet of a membrane desalination system, a fresh water outlet of the membrane desalination system is communicated with the inlet of the comprehensive water tank, a concentrated water outlet of the membrane desalination system is communicated with an inlet of a deep impurity removal system, a water outlet of the deep impurity removal system is communicated with an inlet of an evaporation crystallization system, a condensed water outlet of the evaporation crystallization system is communicated with the inlet of the comprehensive water tank, and an outlet of the comprehensive water tank is communicated with the inlet of the intermediate water tank.
Description
Technical Field
The invention belongs to the field of mine water treatment, and relates to an intelligent allocation and stable standard-reaching discharge system for hypersalinity mine water resources.
Background
Most coal mines in western plateau, huang-Huai plain and coastal areas of China have high mineralization degree of mine water, and partial areas are more than 4000 mg/L. Under the current environment-friendly situation, the hypersalinity mine water is not allowed to be directly discharged, full-flow deep desalination and zero discharge treatment are mainly carried out, the quality of the produced water is ensured, and the recycling utilization or standard discharge is realized. Because the high mineralization mine water treatment process is complex, the flow is long, and the investment and the running cost are high. In particular, in coal mines with large water inflow, produced water cannot be fully utilized, and full-flow treatment belongs to excessive treatment, so that unnecessary treatment cost and burden are increased for enterprises.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an intelligent allocation and stable standard-reaching discharge system for high-mineralization mine water resources, which can realize standard-reaching discharge of the high-mineralization mine water.
In order to achieve the purpose, the intelligent allocation and stable standard-reaching discharge system for the hypersalinity mine water resources comprises a hypersalinity mine water supply main pipe, an adjusting water tank, a pretreatment system, an intermediate water tank, a membrane desalination system, a deep impurity removal system, an evaporation crystallization system, a comprehensive water tank, a downstream user, a standard-reaching discharge port, a pretreatment water inlet pump, a raw water conveying pump, a reflux valve, a reflux pump and a water outlet valve;
the high mineralization mine water inlet pipe is communicated with the inlet of the regulating water tank, the outlet of the regulating water tank is divided into two paths, one path is communicated with the inlet of the pretreatment system through a pretreatment water inlet pump, the other path is communicated with the inlet of the comprehensive water tank through a raw water conveying pump, the water outlet of the pretreatment system is communicated with the inlet of the middle water tank, the outlet of the middle water tank is communicated with the inlet of the membrane desalination system, the fresh water outlet of the membrane desalination system is communicated with the inlet of the comprehensive water tank, the concentrated water outlet of the membrane desalination system is communicated with the inlet of the deep impurity removal system, the water outlet of the deep impurity removal system is communicated with the inlet of the evaporation crystallization system, the condensed water outlet of the evaporation crystallization system is communicated with the inlet of the comprehensive water tank, the outlet of the comprehensive water tank is communicated with the inlet of the middle water tank through a backflow valve and a backflow pump, and the outlet of the comprehensive water tank is communicated with a downstream user and a standard discharge outlet through a water outlet valve.
The device also comprises a comprehensive pool water quality monitoring device and a pool water quality regulating device; the comprehensive water tank water quality monitoring device is communicated with a sampling port of the comprehensive water tank, and the adjusting water tank water quality monitoring device is communicated with the sampling port of the adjusting water tank.
The water supply flowmeter is arranged on the water supply main pipe of the hypersalinity mine water.
The intelligent water resource allocation system is also included; the intelligent water resource allocation system is connected with a water flow meter, a water quality monitoring device of an adjusting pool, a pretreatment water inlet pump, a raw water conveying pump, a reflux valve, a reflux pump, a water outlet valve and a comprehensive water quality monitoring device of the pool.
The system also comprises a sludge treatment system; the sludge treatment system is communicated with a sludge outlet of the pretreatment system and a sludge outlet of the deep impurity removal system.
The pretreatment system comprises a softening, hardness-removing and clarifying device and a filtering device.
The membrane desalination system employs a combination of one or more of reverse osmosis, nanofiltration and electrodialysis.
The deep impurity removing system is one or a combination of a plurality of chemical deep hard removing device, ion exchange device, silicon removing device and advanced oxidation device.
The water quality monitoring device of the adjusting water tank and the comprehensive water tank is used for detecting one or more of salt content, total nitrogen, COD and fluoride ions.
The device also comprises a concentrated brine pond; the concentrated water outlet of the membrane desalination system is communicated with the inlet of a concentrated brine pond, and the outlet of the concentrated brine pond is communicated with the inlet of the deep impurity removal system.
The invention has the following beneficial effects:
when the intelligent allocation and stable standard-reaching discharge system for the hypersalinity mine water resources is operated specifically, hypersalinity mine water output by a hypersalinity mine water inlet pipe is sequentially homogenized by a regulating water tank and then divided into two paths, one path enters a pretreatment system for softening, hardness removal, clarification and filtration, the other path is directly sent into a comprehensive water tank, water output by the pretreatment system is treated by a membrane desalination system, wherein the treated fresh water enters the comprehensive water tank, and the treated concentrated water is sent into the comprehensive water tank after being treated by a deep impurity removal system and an evaporative crystallization system so as to realize standard-reaching discharge of the hypersalinity mine water.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The device comprises a regulating water tank 1, a pretreatment system 2, an intermediate water tank 3, a membrane desalination system 4, a concentrated salt water tank 5, a deep impurity removal system 6, an evaporation crystallization system 7, a sludge treatment system 8, a comprehensive water tank 9, a downstream user 10, a standard discharge port 11, an intelligent water resource allocation system 12, an incoming water flowmeter 13, a pretreatment water inlet pump 14, a regulating water tank water quality monitoring device 15, a raw water conveying pump 16, a comprehensive water tank water quality monitoring device 17, a reflux valve 18, a reflux pump 19 and a water outlet valve 20.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, but not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
In the accompanying drawings, there is shown a schematic structural diagram in accordance with a disclosed embodiment of the invention. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
Referring to fig. 1, the system for intelligently configuring and stably discharging standard-reaching high-mineralized mine water resources comprises an adjusting water tank 1, a pretreatment system 2, a middle water tank 3, a membrane desalination system 4, a concentrated salt water tank 5, a deep impurity removal system 6, an evaporative crystallization system 7, a sludge treatment system 8 and a sludge treatment system 9, wherein the sludge treatment system 9 is a comprehensive water tank 9, a downstream user 10, a standard-reaching discharge port 11, a water resource intelligent configuration system 12, a water flow meter 13, a pretreatment water inlet pump 14, an adjusting water tank water quality monitoring device 15, a raw water conveying pump 16, a comprehensive water tank water quality monitoring device 17, a reflux valve 18, a reflux pump 19 and a water outlet valve 20;
the high mineralization mine water inlet pipe is provided with an incoming water flowmeter 13, the high mineralization mine water inlet pipe is communicated with the inlet of the regulating water tank 1, the outlet of the regulating water tank 1 is divided into two paths, one path is communicated with the inlet of the pretreatment system 2 through a pretreatment water inlet pump 14, the other path is communicated with the inlet of the comprehensive water tank 9 through a raw water conveying pump 16, the water outlet of the pretreatment system 2 is communicated with the inlet of the middle water tank 3, the outlet of the middle water tank 3 is communicated with the inlet of the membrane desalination system 4, the fresh water outlet of the membrane desalination system 4 is communicated with the inlet of the comprehensive water tank 9, the concentrated water outlet of the membrane desalination system 4 is communicated with the inlet of the concentrated brine tank 5, the outlet of the concentrated brine tank 5 is communicated with the inlet of the deep impurity removal system 6, the water outlet of the deep impurity removal system 6 is communicated with the inlet of the evaporative crystallization system 7, the condensed water outlet of the evaporative crystallization system 7 is communicated with the inlet of the comprehensive water tank 9, the outlet of the comprehensive water tank 9 is communicated with the inlet of the middle water tank 3 through a backflow valve 18 and a backflow pump 19, the outlet of the comprehensive water tank 9 is communicated with the downstream user 10 through a water outlet valve 20 and a standard discharge outlet 11.
The comprehensive pond water quality monitoring device 17 is communicated with a sampling port of the comprehensive pond 9, the adjusting pond water quality monitoring device 15 is communicated with a sampling port of the adjusting pond 1, and the water resource intelligent configuration system 12 is connected with the adjusting pond water quality monitoring device 15, the pretreatment water inlet pump 14, the raw water conveying pump 16, the reflux valve 18, the reflux pump 19, the water outlet valve 20 and the comprehensive pond water quality monitoring device 17.
The sludge treatment system 8 is communicated with a sludge outlet of the pretreatment system 2 and a sludge outlet of the deep impurity removal system 6.
The pretreatment system 2 comprises a softening, hardness-removing and clarifying device and a filtering device; the membrane desalination system 4 adopts one or more of reverse osmosis, nanofiltration and electrodialysis, and the corresponding membrane desalination device can be provided with one or more stages. The deep impurity removing system 6 is one or a combination of more than one of a chemical deep hard removing device, an ion exchange device, a silicon removing device and a high-grade oxidation device; the adjusting pool water quality monitoring device 15 and the comprehensive pool water quality monitoring device 17 are used for detecting one or more of salt content, total nitrogen, COD and fluoride ions.
The pretreatment water inlet pump 14, the raw water conveying pump 16 and the reflux pump 19 are all variable frequency pumps, the reflux valve 18 and the water outlet valve 20 are all electric valves, and the water quality monitoring device 15 of the regulating pool and the water quality monitoring device 17 of the comprehensive pool are all on-line water quality monitoring instruments; the water quality monitoring device 15 and the comprehensive water quality monitoring device 17 are interlocked with the pretreatment water inlet pump 14, the raw water conveying pump 16, the reflux valve 18, the reflux pump 19 and the water outlet valve 20; the incoming water flowmeter 13 is interlocked with the pretreatment water intake pump 14 and the raw water delivery pump 16.
The specific working process of the invention is as follows:
the method comprises the steps that high mineralization mine water output by a water supply pipe of high mineralization mine water enters an adjusting water tank 1 for homogenization, then the high mineralization mine water is divided into two paths, one path enters a pretreatment water inlet pump 14 into a pretreatment system 2 for softening, hardness removal, clarification and filtration, wherein filtered water enters an intermediate water tank 3, water output by the intermediate water tank 3 enters a membrane desalination system 4 for treatment, concentrated water output by the membrane desalination system 4 enters a concentrated salt water tank 5, fresh water output by the membrane desalination system 4 enters a comprehensive water tank 9, concentrated brine output by the concentrated salt water tank 5 enters a deep impurity removal system 6 for impurity removal, the purified concentrated brine enters an evaporation crystallization system 7 for evaporation crystallization, condensed water output by the evaporation crystallization system 7 enters the comprehensive water tank 9, and in addition, sediment output by the pretreatment system 2 and impurities output by the deep impurity removal system 6 enter a sludge treatment system 8 for treatment;
the water output by the comprehensive water tank 9 is divided into three paths, wherein the first path enters the middle water tank 3, the second path enters the downstream user 10, and the third path is discharged through the standard discharge port 11.
In addition, in the working process, the flow of the hypersalinity mine water in the hypersalinity mine water inlet pipe is detected through the inflow flowmeter 13, the water quality of the water in the adjusting water tank 1 is monitored through the adjusting water tank water quality monitoring device 15, and the water quality of the water in the comprehensive water tank 9 is detected through the comprehensive water tank water quality monitoring device 17.
When the water quality monitored by the adjusting water quality monitoring device 15 or the comprehensive water quality monitoring device 17 is poor, the flow of the pretreatment water inlet pump 14 is increased, and the flow of the raw water conveying pump 16 is reduced; when the water quality monitored by the water quality monitoring device 15 of the regulating water tank is good, the flow of the pretreatment water inlet pump 14 is reduced, and the flow of the raw water conveying pump 16 is increased; when the flow of the water flow meter 13 is reduced, the flow of the pretreatment water inlet pump 14 and the raw water conveying pump 16 are gradually reduced so as to ensure that the water quality of the water discharged from the comprehensive water tank 9 meets the first priority.
Meanwhile, when the water quality index monitored by the comprehensive water tank water quality monitoring device 17 reaches 90% of the water quality set value, the system automatically gives an early warning, and adjusts the flow distribution of the pretreatment water inlet pump 14 and the raw water conveying pump 16 so as to realize the water quality adjustment of the water in the comprehensive water tank 9; when the water quality index monitored by the comprehensive water tank water quality monitoring device 17 still continuously deteriorates and reaches the water quality set value of 95%, the water outlet valve 20 is closed, the reflux valve 18 and the reflux pump 19 are started to adjust the reflux quantity, the effluent of the comprehensive water tank 9 is conveyed into the middle water tank 3 and enters the membrane desalination system 4 for further desalination treatment until the water quality index of the comprehensive water tank 9 reaches below the water quality set value of 90%, and then the water outlet valve 20 is started again to recycle the effluent of the comprehensive water tank 9 to the downstream user 10, and standard discharge is carried out.
The invention processes the high mineralization mine water according to the requirement and moderately, avoids blind full-flow deep desalination and zero emission treatment, and reduces the system investment and the operation cost. In addition, through the intelligent monitoring and allocation of the water quality and the water quantity of the upstream and downstream water resources, the deep desalination of the hypersalinity mine water and the flexible adjustment of the treatment capacity of a zero emission system are realized, and the running cost is optimized. Meanwhile, according to the degree that the water quality monitoring index of the comprehensive water tank 9 approaches the emission limit value, automatic early warning and automatic flow configuration are carried out, and stable standard emission of the system effluent is ensured.
Claims (6)
1. The intelligent allocation and stable standard-reaching discharge system for the hypersalinity mine water resources is characterized by comprising a hypersalinity mine water main pipe, an adjusting water tank (1), a pretreatment system (2), an intermediate water tank (3), a membrane desalination system (4), a deep impurity removal system (6), an evaporation crystallization system (7), a comprehensive water tank (9), a downstream user (10), a standard-reaching discharge port (11), a pretreatment water inlet pump (14), a raw water delivery pump (16), a reflux valve (18), a reflux pump (19) and a water outlet valve (20);
the method comprises the steps that a hypersalinity mine water inlet pipe is communicated with an inlet of an adjusting water tank (1), an outlet of the adjusting water tank (1) is divided into two paths, one path is communicated with an inlet of a pretreatment system (2) through a pretreatment water inlet pump (14), the other path is communicated with an inlet of a comprehensive water tank (9) through a raw water conveying pump (16), a water outlet of the pretreatment system (2) is communicated with an inlet of an intermediate water tank (3), an outlet of the intermediate water tank (3) is communicated with an inlet of a membrane desalination system (4), a fresh water outlet of the membrane desalination system (4) is communicated with an inlet of the comprehensive water tank (9), a concentrated water outlet of the membrane desalination system (4) is communicated with an inlet of a deep impurity removal system (6), a condensed water outlet of the deep impurity removal system (6) is communicated with an inlet of an evaporation crystallization system (7), an outlet of the comprehensive water tank (9) is communicated with an inlet of the comprehensive water tank (9), an outlet of the comprehensive water tank (9) is communicated with an inlet of the intermediate water tank (3) through a reflux valve (18) and a reflux pump (19), and an outlet of the comprehensive water tank (9) is communicated with a user outlet (11) through a water outlet (20) and a downstream valve (11);
the device also comprises a comprehensive pool water quality monitoring device (17) and a pool water quality regulating device (15); the comprehensive water tank water quality monitoring device (17) is communicated with a sampling port of the comprehensive water tank (9), and the adjusting water tank water quality monitoring device (15) is communicated with a sampling port of the adjusting water tank (1);
the pretreatment system (2) comprises a softening, hardness-removing and clarifying device and a filtering device;
the membrane desalination system (4) adopts one or a combination of more of reverse osmosis, nanofiltration and electrodialysis;
the deep impurity removal system (6) is one or a combination of a plurality of chemical deep hard removal devices, ion exchange devices, silicon removal devices and advanced oxidation devices;
when the water quality monitored by the water quality monitoring device (15) or the comprehensive water quality monitoring device (17) of the water tank is regulated to be poor, the flow of the pretreatment water inlet pump (14) is increased, and the flow of the raw water conveying pump (16) is reduced; when the water quality monitored by the water quality monitoring device (15) of the regulating water tank is good, the flow of the pretreatment water inlet pump (14) is reduced, and the flow of the raw water conveying pump (16) is increased; when the flow of the water flow meter (13) is reduced, the flow of the pretreatment water inlet pump (14) and the raw water conveying pump (16) is gradually reduced so as to ensure that the water quality of the water outlet of the comprehensive water tank (9) meets the requirement as a first priority.
2. The intelligent allocation and stable standard discharge system for hypersalinity mine water resources according to claim 1 is characterized in that a water flow meter (13) is arranged on a hypersalinity mine water supply pipe.
3. The intelligent allocation and stable standard-reaching emission system for hypersalinity mine water resources according to claim 2, further comprising an intelligent allocation system (12) for water resources; the intelligent water resource allocation system (12) is connected with a water flow meter (13), an adjusting pool water quality monitoring device (15), a pretreatment water inlet pump (14), a raw water conveying pump (16), a reflux valve (18), a reflux pump (19), a water outlet valve (20) and a comprehensive pool water quality monitoring device (17).
4. The intelligent allocation and stable standard discharge system for hypersalinity mine water resources according to claim 1, which is characterized by further comprising a sludge treatment system (8); the sludge treatment system (8) is communicated with a sludge outlet of the pretreatment system (2) and a sludge outlet of the deep impurity removal system (6).
5. The intelligent allocation and stable standard discharge system for hypersalinity mine water resources according to claim 1, wherein the adjusting pool water quality monitoring device (15) and the comprehensive pool water quality monitoring device (17) are used for detecting one or more of salt content, total nitrogen, COD and fluoride ions.
6. The intelligent allocation and stable standard-reaching emission system of hypersalinity mine water resources according to claim 1 is characterized by further comprising a concentrated brine pond (5); the concentrated water outlet of the membrane desalination system (4) is communicated with the inlet of a concentrated brine pond (5), and the outlet of the concentrated brine pond (5) is communicated with the inlet of the deep impurity removal system (6).
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|---|---|---|---|---|
| CN104176870A (en) * | 2014-08-25 | 2014-12-03 | 西安热工研究院有限公司 | Viscous oil wastewater pretreatment and evaporation desalting system and method |
| CN209368040U (en) * | 2018-11-27 | 2019-09-10 | 中煤西安设计工程有限责任公司 | A kind of highly mineralized mine water near-zero release processing and comprehensive resource utilize system |
| CN112551787A (en) * | 2020-11-12 | 2021-03-26 | 南京万德斯环保科技股份有限公司 | Mine water deep treatment system and method for treating mine water |
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- 2022-04-25 CN CN202210441620.3A patent/CN114835323B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176870A (en) * | 2014-08-25 | 2014-12-03 | 西安热工研究院有限公司 | Viscous oil wastewater pretreatment and evaporation desalting system and method |
| CN209368040U (en) * | 2018-11-27 | 2019-09-10 | 中煤西安设计工程有限责任公司 | A kind of highly mineralized mine water near-zero release processing and comprehensive resource utilize system |
| CN112551787A (en) * | 2020-11-12 | 2021-03-26 | 南京万德斯环保科技股份有限公司 | Mine water deep treatment system and method for treating mine water |
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