CN219449447U - Treatment system for preventing leakage of red mud storage yard - Google Patents

Abstract

The utility model discloses a treatment system for preventing leakage of a red mud disposal site, which comprises a seepage collecting layer, wherein the seepage collecting layer is arranged at the bottom of the red mud disposal site and is used for collecting the downwards-permeated red mud seepage; the reaction space is communicated with the seepage collecting layer, the fluid supplementing pipeline and the liquid extracting pipeline, red mud seepage is provided through the seepage collecting layer, the reaction liquid which is subjected to neutralization reaction with the red mud seepage is supplemented through the fluid supplementing pipeline, and the liquid after the neutralization reaction is extracted through the liquid extracting pipeline. The reaction layer is formed by sealing and splicing a plurality of support structures, a reaction space is formed in each support structure, and the liquid supplementing pipeline and the liquid extracting pipeline are fixed in the support structures and are communicated with each reaction space. The passive isolation is changed into the active neutralization reaction, so that the total amount of red mud seepage in the red mud storage yard is reduced, and the risks of the red mud seepage on groundwater and surrounding ecological environment are reduced.

Description

Treatment system for preventing leakage of red mud storage yard

Technical Field

The utility model belongs to the field of geotechnical engineering, and relates to a treatment system for preventing leakage of a red mud storage yard.

Background

The red mud disposal site is a special site for stacking red mud, the stacked red mud contains a large amount of strong alkaline chemical substances, and red mud seepage can cause serious pollution to water and surrounding ecological environment. The common seepage-proofing method adopted by the red mud disposal site at present is to lay a seepage-proofing film at the bottom of the red mud disposal site, and seal red mud seepage into the red mud disposal site through the seepage-proofing film. However, with the accumulation of red mud, the leakage risk exists after the red mud seepage is gradually accumulated, and once leakage occurs, the serious threat is generated to underground water and surrounding ecological environment, so that the red mud seepage in the red mud storage yard needs to be treated, and the leakage of the red mud seepage to a certain extent is avoided.

The utility model patent with the publication number of CN214116886U discloses a drainage ditch of a red mud reservoir, which is used for treating red mud seepage, but the drainage ditch is open air and is mainly used for treating the extremely small part of overflow of the red mud reservoir exposed caused by seasonal rainfall and can not be used for treating the red mud seepage in the red mud reservoir.

Disclosure of Invention

The embodiment of the utility model aims to provide a treatment system for preventing leakage of a red mud storage yard, so as to solve the problem that leakage risk exists after red mud seepage of the red mud storage yard is gradually accumulated.

The technical scheme adopted by the embodiment of the utility model is as follows: a treatment system for preventing leakage from a red mud disposal site, comprising:

the seepage collecting layer is arranged at the bottom of the red mud storage yard and is used for collecting the red mud seepage which seeps downwards;

the reaction layer is internally provided with a reaction space, the reaction space is communicated with the seepage collecting layer, the fluid infusion pipeline and the liquid extraction pipeline, red mud seepage is provided through the seepage collecting layer, the reaction liquid which is subjected to neutralization reaction with the red mud seepage is supplemented through the fluid infusion pipeline, and the liquid after the neutralization reaction is extracted through the liquid extraction pipeline.

Further, the reaction layer is formed by sealing and splicing a plurality of support structures, a reaction space is formed in each support structure, and the liquid supplementing pipeline and the liquid extracting pipeline are fixed in the support structures and are communicated with each reaction space.

Further, each of the support structures includes:

the reaction space is formed in the upper supporting structure;

the lower support structure is internally provided with a reserved pipeline groove, and the liquid supplementing pipeline and the liquid extracting pipeline are fixed in the reserved pipeline groove;

the upper support structure and the lower support structure are detachably connected.

Further, a conveying channel communicated with the reaction space is formed in each upper supporting structure, and the reaction spaces of two adjacent supporting structures are communicated through the conveying channel.

Further, last bearing structure bottom be provided with the reference column, lower bearing structure top be provided with the locating hole that corresponds, go up bearing structure and lower bearing structure and pass through reference column and locating hole assembly, realize dismantling the connection.

Further, the treatment system for preventing leakage of the red mud disposal site further comprises a fluid infusion and fluid extraction control system, wherein the fluid infusion and fluid extraction control system comprises:

the sensor and the control valve are arranged on the liquid supplementing pipeline and the liquid extracting pipeline in the reaction layer;

the control console is electrically connected with the sensor and the control valve, receives monitoring data of the sensor and the control valve and controls the opening/closing of the control valve.

Further, the liquid pumping pipeline is communicated with the middle upper part of the reaction space, and the liquid supplementing pipeline is communicated with the bottom of the reaction space;

the sensor and the control valve are arranged at the pipe orifice parts of the liquid suction pipe and the liquid supplementing pipe which are communicated with each reaction space.

Further, the sensor & control valve includes:

the electromagnetic valve is arranged on the liquid supplementing pipeline and the liquid extracting pipeline;

the optical fiber temperature sensor and the optical fiber pressure sensor are fixed on the electromagnetic valve;

wherein:

a sensor and a control valve are arranged in each supporting structure of the reaction layer;

the optical fiber pressure sensors in one row are connected in series through two optical fibers and then connected with a demodulator, and the optical fiber temperature sensors in one row are connected in series through one optical fiber and then connected with a demodulator, and the demodulator is electrically connected with the control console.

Further, the seepage collecting layer comprises an anti-seepage geomembrane and a first geotechnical composite drainage network which are paved in sequence from bottom to top;

and the impermeable geomembrane is provided with a drainage hole at a position right above the reaction space of the reaction layer, the drainage hole is communicated with the reaction space, and red mud seepage is dripped into the reaction space of the reaction layer along the drainage hole under the action of gravity.

Further, a filtering protection layer is arranged at the top of the seepage collection layer;

the bottom of the reaction layer is provided with a basic impermeable layer.

The embodiment of the utility model has the beneficial effects that:

1. the traditional leakage liquid isolation method is improved, the passive isolation is changed into active reaction, the reacted liquid is discharged through a liquid suction pipeline after the reaction liquid is adopted to neutralize the red mud leakage liquid, the total amount of the red mud leakage liquid in the red mud storage yard is reduced, the risks of the red mud leakage liquid on underground water and surrounding ecological environment are reduced, and the problem that the leakage risk exists after the red mud leakage liquid of the red mud storage yard is gradually accumulated is solved;

2. the pressure and the temperature of the reaction liquid are monitored by adopting an optical fiber pressure sensor and an optical fiber temperature sensor, all the optical fiber pressure sensors are connected in series by two optical fibers, all the optical fiber temperature sensors are connected in series by one optical fiber, the neutralization reaction of each reaction space in a row of supporting structures can be monitored by three optical fibers, the reaction liquid is supplemented by the feedback temperature and pressure control, and the method is correspondingly quick and high in precision;

3. the reaction liquid can be supplemented in real time by using multiple modes through the control console, so that the working efficiency of the reaction layer is ensured.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a treatment system for preventing leakage of a red mud disposal site according to an embodiment of the present utility model.

FIG. 2 is a schematic structural diagram of a reaction layer according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of a support structure according to an embodiment of the present utility model.

Fig. 4 is a schematic diagram of the structure of a sensor & control valve according to an embodiment of the present utility model.

In the figure, 1 a reaction solution storage tank, 2 a liquid extraction treatment tank, 3 a filtration protection layer, 4 a seepage collection layer, 5 a reaction layer, 6 a barrier layer, 7 a reverse filtration layer, 8 a ground water collection drainage layer, 9 a resistance layer, 10 a base layer, 11 a primary stratum, 12 a support structure, 13 a fluid supplementing pipe, 14 a liquid extraction pipe, 15 a sensor and control valve, 16 a demodulator, 17 a upper support structure, 18 a lower support structure, 19 a positioning hole, 20 a positioning column, 21 a conveying channel, 22 a reaction space, 23 a control console, 24 a reserved pipe groove, 25 a solenoid valve, 26 an optical fiber temperature sensor, 27 an optical fiber pressure sensor and 28 an optical fiber.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment provides a treatment system for preventing leakage of a red mud disposal site, as shown in fig. 1-4, comprising:

the seepage collecting layer 4 is arranged at the bottom of the red mud storage yard and used for collecting the red mud seepage which seeps downwards;

the reaction layer 5, set up reaction space 22 in the reaction layer 5, reaction space 22 and ooze liquid collecting layer 4, make-up liquid pipeline 13 and drawing liquid pipeline 14 intercommunication, provide red mud ooze liquid through ooze liquid collecting layer 4, make-up the reaction liquid that carries out neutralization reaction with red mud ooze liquid through make-up liquid pipeline 13, draw the liquid after the reaction space 22 carries out neutralization reaction through drawing liquid pipeline 14.

In some embodiments, as shown in fig. 1, the reaction layer 5 is formed by splicing a plurality of support structures 12 in a sealing manner, each support structure 12 is internally provided with a reaction space 22, and the fluid infusion tube 13 and the fluid infusion tube 14 are fixed inside the support structure 12 and are communicated with each reaction space 22.

In some embodiments, as shown in fig. 3, each of the support structures 12 includes:

an upper support structure 17, wherein the reaction space 22 is arranged in the upper support structure 17;

the lower support structure 18, the lower support structure 18 is provided with a reserved pipeline groove 24, and the fluid infusion pipeline 13 and the fluid extraction pipeline 14 are fixed in the reserved pipeline groove 24;

the upper support structure 17 and the lower support structure 18 are detachably connected.

In some embodiments, as shown in fig. 3, a positioning column 20 is disposed at the bottom of the upper support structure 17, a corresponding positioning hole 19 is disposed at the top of the lower support structure 18, and the upper support structure 17 and the lower support structure 18 are assembled through the positioning column 20 and the positioning hole 19, so as to realize detachable connection.

In some embodiments, the treatment system for preventing leakage of a red mud storage yard further comprises a fluid infusion and fluid extraction control system, the fluid infusion and fluid extraction control system comprises:

the sensor and control valve 15, the sensor and control valve 15 is arranged on the liquid supplementing pipeline 13 and the liquid extracting pipeline 14 in the reaction layer 5;

the control console 23, the control console 23 is electrically connected with the sensor and the control valve 15, and the opening/closing of the control valve is controlled by the monitoring data of the sensor to control the fluid infusion process of the fluid infusion pipeline 13 and the fluid extraction process of the fluid extraction pipeline 14.

In some embodiments, as shown in fig. 1, the liquid-extracting pipe 14 is communicated with the middle upper part of the reaction space 22, the liquid-supplementing pipe 13 is communicated with the bottom of the reaction space 22, and the sensor and control valve 15 is arranged at the pipe orifice parts of the liquid-extracting pipe 14 and the liquid-supplementing pipe 13 communicated with each reaction space 22, so that the neutralization reaction of each reaction space 22 can be accurately controlled.

The neutralization reaction starts from the red mud seepage liquid dropping into the reaction space 22, the liquid suction pipeline 14 and the sensor and control valve 15 on the liquid suction pipeline are arranged above the reaction space 22, so that the temperature change can be timely sensed, the reacted liquid is directly sucked away by the liquid suction pipeline 14 positioned at the middle upper part of the reaction space 22, and meanwhile, the liquid supplementing pipeline 13 positioned at the bottom is used for supplementing liquid, so that the neutralization reaction efficiency is high.

In some embodiments, a conveying channel 21 is formed in each upper support structure 17 and is communicated with the reaction space 22, and the reaction spaces 22 of two adjacent support structures 12 are communicated through the conveying channel 21. When the neutralization reaction is carried out in the plurality of reaction spaces 22, the sensor and the control valve 15 monitor the temperature rise, the control console 23 controls the liquid suction pipeline 14 and the liquid supplementing pipeline 13 in the reaction space in which the neutralization reaction is carried out to start working, the peripheral reaction space 15 which does not react only opens the liquid supplementing pipeline 13 to supplement liquid, and the reaction liquid supplemented in the peripheral reaction space 22 can move along the conveying channel 21 to the reaction space 22 in which the neutralization reaction is carried out to assist the reaction space 22 in which the neutralization reaction is carried out to supplement the reaction liquid under the driving of the liquid pressure difference.

In some embodiments, as shown in fig. 4, the sensor & control valve 15 includes:

the electromagnetic valve 25 is arranged on the fluid supplementing pipeline 13 and the fluid extracting pipeline 14;

an optical fiber temperature sensor 26 and an optical fiber pressure sensor 27, the optical fiber temperature sensor 26 and the optical fiber pressure sensor 27 being fixed on the electromagnetic valve 25;

wherein:

all the supporting structures 12 of the reaction layer 5 are internally provided with sensors and control valves 15;

a row of optical fiber pressure sensors are connected in series through two optical fibers 28 and then connected with a demodulator 16, wherein one optical fiber 28 measures pressure, and the other optical fiber 28 is used for assisting in temperature compensation; a row of said optical fiber temperature sensors 26 are connected in series by a temperature sensitive optical fiber 28, and then connected to a demodulator 16, the demodulator 16 being electrically connected to the console 23. The optical fiber temperature sensor 26 and the optical fiber pressure sensor 27 can be used for feeding back very tiny temperature and pressure changes, and the sensitivity is high. The optical fiber data detected by the optical fiber temperature sensor 26 and the optical fiber pressure sensor 27 are converted into corresponding temperature and pressure values through the demodulator 16, the data are sent to the control console 23, and the control console 23 controls the electromagnetic valves 25 on the liquid supplementing pipeline 13 and the liquid extracting pipeline 14 to be opened/closed according to the feedback data so as to control the injection of the reaction liquid or the extraction of the liquid after the reaction.

The console 23 controls the mode based on the data fed back by the fiber temperature sensor 26 and the fiber pressure sensor 27: in a general reaction mode, the optical fiber temperature sensor 26 detects that the temperature gradually rises to a certain degree, a control valve of the liquid extracting pipeline 14 is opened, the reacted liquid is extracted, a control valve of the liquid supplementing pipeline 13 is opened, an equal amount of reaction liquid is injected into the reaction layer 5, and the temperature is reduced between one extraction and one injection; in the severe reaction mode, when the reaction is severe, the temperature can be rapidly increased, the control console 23 increases the extraction power of the liquid extraction pipeline 14 to form local negative pressure, and simultaneously, the electromagnetic valves 25 of the peripheral liquid supplementing pipelines 13 are controlled to be synchronously opened to supplement liquid to form positive pressure, the reaction liquid is conveyed to the conveying channel 21 of the upper supporting structure 17 through the pressure difference to supplement liquid to the reaction space 22, and the liquid supplementing amount is determined through the pressure balance monitoring of the optical fiber pressure sensor. The process of converting optical fiber data into temperature and pressure values belongs to the prior art, and is not described here in detail.

In some embodiments, the seepage collecting layer 4 includes an impermeable geomembrane and a first geocomposite drainage network which are sequentially laid from bottom to top, the first geocomposite drainage network can enable red mud seepage to penetrate, but red mud particles cannot penetrate, the red mud seepage is enriched on the impermeable geomembrane, a drainage hole is formed in the impermeable geomembrane in advance at a position right above the reaction space 22 of the reaction layer 5, the drainage hole is communicated with the reaction space 22, so that the enriched red mud seepage can only drop into the reaction space 22 of the reaction layer 5 along the hole of the drainage hole under the action of gravity, and the neutralization reaction occurs with the reaction liquid.

In some embodiments, the top of the seepage collecting layer 4 is provided with a filtering protective layer 3, the filtering protective layer 3 is formed by polyester filament geotextile, and the uneven piling of red mud above is prevented from generating stress difference and abnormal deformation to damage the lower structure。Specifically, 600g/m of the filter-protecting layer 3 can be used ² The polyester filament geotextile has the characteristics of water permeability, corrosion resistance, aging resistance and impact resistance, and can protect the geotextile from being punctured by sharp objects or damage caused by uneven bearing.

In some embodiments, the bottom of the reaction layer 5 is provided with a base impermeable layer.

In some embodiments, the base barrier layer comprises:

the bidirectional impermeable layer is arranged at the bottom of the reaction layer 5 and is used for bidirectional impermeable, so that liquid after reaction in the reaction layer 5 is prevented from entering the ground, and groundwater is prevented from entering the reaction layer 5;

the underground water collecting and guiding layer 8 is arranged at the bottom of the bidirectional impermeable layer, and is used for collecting and discharging underground water, and specifically, the underground water collecting and guiding layer 8 can adopt pebbles and a second geotechnical composite drainage net;

the resisting layer 9 is arranged at the bottom of the underground water collecting and guiding layer 8 and at the top of the foundation layer 10, and the foundation layer 10 is formed by tamping an original stratum 11; the resistant layer 9 is used for solving the negative effect caused by uneven stress, so that the basic impermeable layer is uniformly stressed and does not generate abnormal sedimentation difference, and the high-strength polypropylene woven geotextile with very high tensile strength, breaking strength and tensile strength can be adopted.

In some embodiments, the bi-directional barrier layer comprises:

the impermeable layer 6 is arranged at the bottom of the reaction layer 5;

the reverse filtering layer 7 is arranged at the bottom of the impermeable layer 6 to perform reverse impermeable, and the reverse filtering layer 7 is matched with the impermeable layer 6 to realize bidirectional impermeable.

Specifically, the reverse filtering layer 7 may include a bentonite waterproof blanket and a bidirectional impermeable geomembrane, and the impermeable layer 6 may be a nonwoven geotextile.

In some embodiments, the liquid supplementing pipeline 13 is communicated with the reaction liquid storage tank 1, the liquid extracting pipeline 14 is communicated with the liquid extracting treatment tank 2, and the reaction liquid storage tank 1 and the liquid extracting treatment tank 2 are arranged outside the red mud storage yard.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims (10)

1. A treatment system for preventing leakage from a red mud disposal site, comprising:

the seepage collecting layer (4), the seepage collecting layer (4) is set up in the bottom of the red mud yard, collect the red mud seepage that seeps down;

the red mud treatment device comprises a reaction layer (5), wherein a reaction space (22) is arranged in the reaction layer (5), the reaction space (22) is communicated with a seepage collecting layer (4), a fluid supplementing pipeline (13) and a liquid extracting pipeline (14), red mud seepage is provided through the seepage collecting layer (4), the reaction liquid which is subjected to neutralization reaction with the red mud seepage is supplemented through the fluid supplementing pipeline (13), and the liquid after the neutralization reaction is extracted through the liquid extracting pipeline (14).

2. The treatment system for preventing leakage of the red mud disposal site according to claim 1, wherein the reaction layer (5) is formed by sealing and splicing a plurality of support structures (12), a reaction space (22) is formed inside each support structure (12), and the liquid supplementing pipeline (13) and the liquid extracting pipeline (14) are fixed inside the support structures (12) and are communicated with each reaction space (22).

3. A red mud yard leakage prevention treatment system according to claim 2, wherein each of said support structures (12) comprises:

an upper support structure (17), wherein the reaction space (22) is arranged in the upper support structure (17);

the lower support structure (18), the lower support structure (18) is provided with a reserved pipeline groove (24), and the liquid supplementing pipeline (13) and the liquid extracting pipeline (14) are fixed in the reserved pipeline groove (24);

the upper support structure (17) and the lower support structure (18) are detachably connected.

4. A red mud yard leakage prevention treatment system according to claim 3, characterized in that each of said upper support structures (17) is provided with a conveying channel (21) communicating with a reaction space (22), and the reaction spaces (22) of two adjacent support structures (12) are communicated through the conveying channels (21).

5. A red mud disposal system for preventing leakage of a red mud disposal site according to claim 3, wherein a positioning column (20) is arranged at the bottom of the upper supporting structure (17), a corresponding positioning hole (19) is arranged at the top of the lower supporting structure (18), and the upper supporting structure (17) and the lower supporting structure (18) are assembled through the positioning column (20) and the positioning hole (19) to realize detachable connection.

6. The treatment system for preventing leakage of a red mud disposal site according to any one of claims 1 to 5, further comprising a fluid infusion and fluid extraction control system, wherein the fluid infusion and fluid extraction control system comprises:

the sensor and control valve (15) is arranged on the liquid supplementing pipeline (13) and the liquid extracting pipeline (14) in the reaction layer (5);

the control console (23), the control console (23) is electrically connected with the sensor and the control valve (15), receives the monitoring data of the sensor and the control valve (15) and controls the opening/closing of the control valve.

7. The treatment system for preventing leakage of the red mud disposal site according to claim 6, wherein the liquid pumping pipeline (14) is communicated with the middle upper part of the reaction space (22), and the liquid supplementing pipeline (13) is communicated with the bottom of the reaction space (22);

the sensor and the control valve (15) are arranged at the pipe orifice parts of the liquid suction pipe (14) and the liquid supplementing pipe (13) which are communicated with each reaction space (22).

8. A treatment system for preventing leakage from a red mud disposal site according to claim 6, wherein the sensor & control valve (15) comprises:

the electromagnetic valve (25), the electromagnetic valve (25) is set up on fluid infusion pipeline (13) and drawing the liquid pipeline (14);

an optical fiber temperature sensor (26) and an optical fiber pressure sensor (27), wherein the optical fiber temperature sensor (26) and the optical fiber pressure sensor (27) are fixed on the electromagnetic valve (25);

wherein:

a sensor and a control valve (15) are arranged in each supporting structure (12) of the reaction layer (5);

one row of the optical fiber pressure sensors (27) is connected with a demodulator (16) after being connected in series through two optical fibers (28), one row of the optical fiber temperature sensors (26) is connected with the demodulator (16) after being connected in series through one optical fiber (28), and the demodulator (16) is electrically connected with the console (23).

9. The treatment system for preventing leakage of a red mud disposal site according to any one of claims 1 to 5, 7 or 8, wherein the seepage collection layer (4) comprises an impermeable geomembrane and a first geotechnical composite drainage network which are laid in sequence from bottom to top;

and a drainage hole is formed in the impermeable geomembrane at a position right above the reaction space (22) of the reaction layer (5), the drainage hole is communicated with the reaction space (22), and red mud seepage is dripped into the reaction space (22) of the reaction layer (5) along the drainage hole under the action of gravity.

10. The treatment system for preventing leakage of a red mud disposal site according to any one of claims 1 to 5, 7 or 8, wherein a filtration protection layer (3) is arranged on top of the seepage collection layer (4);

the bottom of the reaction layer (5) is provided with a basic impermeable layer.