CN216073267U - Intelligent grading recycling treatment system for mine mixed wastewater - Google Patents

Abstract

The utility model discloses an intelligent classification and reuse treatment system for mixed waste water from mines. The system comprises a sump for collecting waste water, and the waste water in the sump is transported to a primary solid-liquid separation device for water inflow separation, and the primary solid-liquid separation equipment The wastewater separated by the liquid separation equipment is transported to the radial flow sedimentation tank, and the upper clean water after sedimentation in the radial flow sedimentation tank overflows to the clean water tank for standby use; the sludge after sedimentation in the radial flow sedimentation tank is transported to the sludge tank , the sludge in the sludge tank is transported to the diaphragm filter press, the filter plate on the diaphragm filter press is communicated with the compressed gas device through the squeezing hose, and the mud cake discharged from the discharge hopper under the diaphragm filter press is shoveled. The car and the vehicle are transported away, and the water filtered by the diaphragm filter press is discharged to the clean water pool. The system can automatically adjust the dosing amount according to the influent water quality and flow, further improve the effluent water quality, save chemicals, and the sludge can be recycled.

Description

Intelligent grading recycling treatment system for mine mixed wastewater

Technical Field

The utility model relates to the field of treatment of mine sand washing wastewater and other wastewater, in particular to an intelligent grading recycling treatment system for mine mixed wastewater.

Background

Various waste water is generated in the mining, conveying and processing processes of the mine aggregate, and comprises sandstone washing waste water, dust removal waste water and the like. At present, a lot of enterprises and individuals conduct a lot of research and study on the treatment of mine wastewater, and some achievements are achieved.

Chinese patent document CN 109052688 discloses a treatment method of fine sand recovery, horizontal sedimentation tank flocculation sedimentation, and chamber filter press dehydration. CN 204779162U discloses a treatment method of air stripping sand setting, flocculation precipitation and sludge concentration. CN 211419844U discloses an integrated filtering, precipitating and purifying device. In general, the prior art still has the following disadvantages:

1. the horizontal sedimentation tank has lower sedimentation load, large floor area and poor water outlet effect;

2. the integrated water purifier has a complex structure, is not easy to popularize and has small equipment treatment scale;

3. the sand and stone waste water has large flow and concentration fluctuation, and a dosing system cannot adjust the dosing amount along with the water quality and the water quantity, so that medicament waste, water outlet and the like are caused;

4. the tail water can not be recycled according to the quality.

5. The sludge treatment part adopts simple mechanical filter pressing or concentration, the water content of the product cannot be further reduced, and full reduction is realized.

Based on the situation, the utility model provides an intelligent grading recycling treatment system for mine mixed wastewater, which can effectively solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an intelligent grading recycling treatment system and process for mine mixed wastewater, aiming at overcoming the defects of the prior art. In addition, most of clear water is recycled to a sand washing workshop, and a part of clear water can be used for dust removal, greening, fire fighting and the like through advanced treatment, so that the quality-based recycling of waste water is realized. The sludge dewatering adopts a high-pressure diaphragm filter press, mechanical filter pressing and gas compression are combined, the water content of a mud cake is greatly reduced, and the reduction of products is realized.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

an intelligent grading recycling treatment system for mine mixed wastewater comprises a water collecting tank for collecting wastewater, wherein the wastewater in the water collecting tank is conveyed to a primary solid-liquid separation device for water inlet separation, the wastewater separated by the primary solid-liquid separation device is conveyed to a radial flow sedimentation tank, and upper clear water precipitated by the radial flow sedimentation tank overflows to a clear water tank for later use; the sludge after the sedimentation of the radial flow sedimentation tank is conveyed to a sludge tank, the sludge in the sludge tank is conveyed to a membrane filter press, a filter plate on the membrane filter press is communicated with a compressed gas device through a squeezing hose, a mud cake discharged from a discharge hopper below the membrane filter press is conveyed away through a forklift and a vehicle, and the pressure-filtered water of the membrane filter press is discharged to a clean water tank.

As a preferable technical scheme of the utility model, the wastewater in the water collecting tank is conveyed to a primary solid-liquid separation device for separation through a first slurry pump.

As a preferable technical scheme of the utility model, the primary solid-liquid separation equipment comprises a cyclone and a dewatering screen which are connected with a water collecting tank, wherein the cyclone can separate fine sand and stone powder under the action of centrifugal force and then discharge the fine sand and the stone powder to the dewatering screen, and the dewatering screen can remove moisture in the fine sand under the action of excitation force.

As a preferred technical scheme of the utility model, the wastewater at the upper part of the cyclone overflows to a radial flow sedimentation tank through a pipeline mixer and a flowmeter.

According to a preferable technical scheme, a first clean water pump pumps water from the bottom of the clean water tank to water utilization equipment, a second clean water pump pumps water from the bottom of the clean water tank and filters the water through a self-depth treatment device, effluent filtered by the depth treatment device is discharged to a reclaimed water reuse tank, and filtered wastewater is discharged into a water inlet end of the radial sedimentation tank.

As a preferable technical scheme of the utility model, a second slurry pump is arranged beside a sludge hopper at the bottom of the radial flow sedimentation tank, and sludge is conveyed to the sludge tank through the second slurry pump.

As a preferred technical scheme of the utility model, the bottom of the sludge tank is connected with a feeding pump by adopting a pipeline, and the outlet of the feeding pump is connected with a membrane filter press.

As a preferred technical scheme of the utility model, the device also comprises a liquid level sensor, a water level controller, a water quality monitoring device and a dosing controller; the liquid level sensor is used for detecting the water level of the reclaimed water reuse tank, the liquid level sensor is connected to the water level controller, the water level controller is connected to the second clean water pump, the water quality monitoring device is used for detecting the water quality in a silo of the radial flow sedimentation tank, the flowmeter and the water quality monitoring device are connected to the dosing controller, and the dosing controller is connected to the dosing device.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. the solid-liquid separation unit cancels a traditional advection type sedimentation tank with lower efficiency and large occupied area, and adopts a radial sedimentation tank with higher sludge load, so that the concentration efficiency can be improved, and the effluent quality can be improved;

2. the traditional manual medicine adding mode is changed, an intelligent medicine adding system for adjusting the medicine adding amount according to the water amount and the water quality is designed, the medicine consumption is reduced, and the effluent water quality is improved;

3. a combined dehydration mode of mechanical filter pressing and gas pressing is adopted, so that the water content of the mud cake is further reduced;

4. the tail water is recycled according to the quality, most of the tail water is recycled to a sand washing workshop, and the small part of the tail water is recycled to fire fighting, greening, dust removal and the like after advanced treatment. Not only meets the production requirement, but also controls the treatment cost.

Drawings

FIG. 1 is a process flow diagram of the present invention.

Reference numerals: 1-a water inlet end, 2-a water collecting tank, 3-a sewage stirrer, 4-a first slurry pump, 5-a swirler, 6-a dewatering screen, 7-a fine sand belt conveyor, 8-a pipeline mixer, 9-a flow meter, 10-a dosing controller, 11-a water quality monitoring device, 12-a radial flow sedimentation tank, 13-a steady flow cylinder, 14-a central transmission automatic rake-lifting thickener, 15-a second slurry pump, 16-a clean water tank, 17-a first clean water pump, 18-a second clean water pump, 20-a depth processing device, 21-a water level controller, 22-a reclaimed water tank, 23-a liquid level sensor, 24-a third clean water pump, 25-a sludge tank, 26-a feeding pump, 27-a high-pressure membrane filter press and 28-a compressed gas device, 29-a dosing device.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The utility model will be further described with reference to the accompanying fig. 1 and examples, but is not to be construed as being limited thereto.

As shown in figure 1, the utility model provides an intelligent grading recycling treatment system and process for mine mixed wastewater, which comprises a homogenizing and mixing system, a fine sand recovery system, a solid-liquid separation system, a dehydration and solidification system, an advanced treatment system, an intelligent dosing system and the like. The processing units are connected through pipelines.

The homogenizing mixing system comprises: a water collecting tank 2, a sewage stirrer 3, a first slurry pump 4 and the like. The sand washing wastewater, the dust removal wastewater and the like enter the water collecting tank 2 through a ground drainage ditch, are fully mixed by stirring of the sewage stirrer 3 in the water collecting tank 2, and the homogenized wastewater is conveyed to the cyclone 5 in the fine sand recovery system through the first slurry pump 4.

The fine sand recovery processing unit includes: a swirler 5, a dewatering screen 6 and a fine sand belt conveyor 7. After the mixed wastewater enters the cyclone 5, the lower layer of fine sand falls onto the dewatering screen 6 to be dewatered under the action of centrifugal force, and the outlet of the dewatering screen 6 is connected with a fine sand belt conveyor 7; the wastewater on the upper layer of the cyclone 5 overflows to a radial flow sedimentation tank 12.

The solid-liquid separation system comprises: a radial flow sedimentation tank 12, a central transmission automatic rake-lifting thickener 14, a second slurry pump 15, a clean water tank 16, a clean water pump and the like; the cyclone 5 is connected with a radial flow sedimentation tank 12, wastewater enters the radial flow sedimentation tank 12 and then is subjected to flocculation sedimentation, and concentrated sludge enters a sludge hopper under the action of a central transmission automatic rake-lifting thickener 14. Supernatant in the radial flow sedimentation tank 12 overflows into a clean water tank 16, a sludge hopper in the radial flow sedimentation tank 12 is connected with a second slurry pump 15 by adopting a pipeline, and concentrated sludge is conveyed to a sludge tank 25 by the second slurry pump 15.

The dehydration and solidification system comprises a sludge pool 25, a feeding pump 26, a high-pressure membrane filter press 27, a compressed gas device 28 and the like. The sludge tank 25 is connected to a high-pressure membrane filter press 27 by means of a feed pump 26, and the sludge is dewatered in the filter press and then further pressed by compressed gas. The mud cake directly falls to the ground through a mud discharging hopper and is loaded and transported outside through a forklift, and a drainage hopper of the filter press is connected with a clean water tank 16.

Advanced treatment system includes the reuse of reclaimed water device, and the tail water to in the clean water basin 16 is further handled, purifies the back from flowing to the reuse of reclaimed water basin 22 is followed through first clean water pump 17 the clean water basin 16 bottom is drawn water to the water equipment, and second clean water pump 18 is followed 16 bottoms in the clean water basin are drawn water and are filtered from advanced treatment device 20, the play water after advanced treatment device 20 filters to reuse of reclaimed water basin 22, and the waste water that filters is gone into the end of intaking of radial sedimentation tank 12 is followed through third clean water pump 24 the reuse of reclaimed water basin 22 bottom is drawn water to the water equipment.

The intelligent dosing system comprises a flowmeter 9, a water quality monitoring device 11, a dosing controller 10, a dosing device 29 and the like. The flowmeter 9 is arranged on a water inlet pipeline of the radial flow sedimentation tank 12 to obtain flow data, the water quality detection device is used for detecting the water quality in the flow stabilizing cylinder 13 of the radial flow sedimentation tank 12, the flowmeter 9 and the water quality detection device are connected to the dosing controller 10, and the dosing controller 10 is connected to the dosing device.

The liquid level sensor 23 is used for detecting the water level of the reclaimed water reuse water tank 22, the liquid level sensor 23 is connected to the water level controller 21, and the water level controller 21 is connected to the second clean water pump 18. The pumping amount of the second clean water pump 18 is changed according to the liquid level change in the reclaimed water reuse water tank 22.

According to the description and the drawings of the utility model, a person skilled in the art can easily manufacture or use the intelligent grading recycling treatment system for mine mixed wastewater, and can produce the positive effects recorded in the utility model.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims (8)

1. An intelligent grading reuse treatment system for mixed waste water from mines, comprising a sump (2) for collecting waste water, characterized in that: the waste water in the sump (2) is transported to primary solid-liquid separation equipment for water inflow separation, The waste water separated by the primary solid-liquid separation equipment is transported to the radial flow sedimentation tank (12), and the upper clear water after sedimentation in the radial flow sedimentation tank (12) overflows to the clean water tank (16) for standby use; The sludge after sedimentation in the radial flow sedimentation tank (12) is transported to a sludge tank (25), and the sludge in the sludge tank (25) is transported to a diaphragm filter press (27), and the diaphragm filter press ( The filter plate on 27) is communicated with the compressed gas device (28) through the squeezing hose, the mud cake discharged from the discharge hopper under the diaphragm filter press (27) is transported away by forklifts and vehicles, and the diaphragm filter press (27). 27) Press-filtered water is discharged to the clear water tank (16). 2. The intelligent grading and reuse treatment system for mine mixed wastewater according to claim 1, characterized in that: the wastewater in the sump (2) is transported to the primary solid-liquid by the first slurry pump (4). Separation in separation equipment. 3. The intelligent grading reuse treatment system for mine mixed wastewater according to claim 1, characterized in that: the primary solid-liquid separation equipment comprises a cyclone (5) connected to a sump (2) and a dewatering device Screen (6), the cyclone (5) can separate fine sand and stone powder under the action of centrifugal force, and then discharge to the dewatering screen (6), the dewatering screen (6) can be used under the excitation force The water in the fine sand is removed under the action. 4. The intelligent grading and reuse treatment system for mine mixed wastewater according to claim 3, characterized in that: the wastewater in the upper part of the cyclone (5) overflows through the pipeline mixer (8) and the flow meter (9). Flow to the radial flow sedimentation tank (12). 5. The intelligent grading reuse treatment system for mine mixed wastewater according to claim 1, characterized in that: the first clean water pump (17) is used to pump water from the bottom of the clean water pool (16) to the water equipment, and the second clean water pump (17). The clean water pump (18) draws water from the bottom of the clean water tank (16) and is filtered by the advanced treatment device (20). The waste water is discharged into the water inlet end of the radial flow sedimentation tank (12). 6. The intelligent grading and reuse treatment system for mine mixed wastewater according to claim 1, characterized in that: a second slurry pump (15) is provided beside the sludge bucket at the bottom of the radial flow sedimentation tank (12). , the sludge is transported to the sludge tank (25) through the second slurry pump (15). 7 . The intelligent grading and reuse treatment system for mine mixed wastewater according to claim 1 , wherein the bottom of the sludge tank ( 25 ) is connected to the feeding pump ( 26 ) by means of pipes, and the feeding The outlet of the pump (26) is connected to the diaphragm filter press (27). 8. The intelligent grading reuse treatment system for mine mixed wastewater according to claim 1, characterized in that: it further comprises a liquid level sensor (23), a water level controller (21), a water quality monitoring device (11) and a The medicine controller (10); the liquid level sensor (23) is used to detect the water level of the reclaimed water reuse pool (22), the liquid level sensor (23) is connected to the water level controller (21), and the water level controller is connected to the second clean water tank (22). The water pump (18) and the water quality monitoring device (11) are used to detect the water quality in the silo (13) of the radial flow sedimentation tank (12), and the flow meter (9) and the water quality monitoring device (11) are connected to the dosing controller ( 10), the dosing controller (10) is connected to the dosing device (29).

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