CN211712819U

CN211712819U - Mine water treatment system

Info

Publication number: CN211712819U
Application number: CN201922419684.XU
Authority: CN
Inventors: 况力; 王静; 蔡开建; 黄文建; 李秋燕; 邓福芹; 罗祥; 赖政钢
Original assignee: Chongqing Gangli Environmental Protection Co ltd
Current assignee: Chongqing Gangli Environmental Protection Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-20
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a mine water processing system, including the equalizing basin, in and the aeration tank, the disinfection is discharged the pond, sludge impoundment and clarification filter, the clarification filter includes the organism, from the bottom to the top has set gradually the mud bucket in the organism, the clarification layer, filter layer and play water weir, be provided with the sprayer bottom the organism, still be provided with first reacting chamber and second reacting chamber in the organism, the delivery port of sprayer stretches into in the bottom inlet of first reacting chamber, the top of first reacting chamber is stretched to the position that leans on the top in the second reacting chamber, the delivery port of second reacting chamber is located its bottom, and the delivery port of second reacting chamber is located the clarification layer below, the delivery port of play water weir links to each other with the water inlet of disinfection discharge pond, the mud drainage mouth of mud bucket links to each other with the sludge impoundment. The flocculation coagulation, sedimentation and filtration of the mine water are integrated through the clarifying filter, so that the occupied area of equipment is effectively saved, the flocculation effect and the medicine utilization rate are improved, and the medicine usage amount is reduced.

Description

Mine water treatment system

Technical Field

The utility model belongs to mine water purification equipment field, concretely relates to mine water treatment system.

Background

In the coal mining process, underground water is in contact with a coal bed and a rock stratum and has a series of physical, chemical and biochemical reactions under the influence of human activities, so that the water quality has obvious characteristics in the coal industry: the mine water has the suspended matter content far higher than that of surface water, is poor in sensory property, small in granularity of the contained suspended matter, light in specific gravity, low in settling speed and poor in coagulation effect, contains organic pollutants such as waste engine oil and emulsified oil in the mine water besides the suspended matter, and can cause serious pollution to the surrounding water environment if the mine water is directly discharged without being treated.

The three procedures of coagulation flocculation, sedimentation and filtration in the existing mine water treatment system are required to be carried out in separate areas, the occupied area of equipment is large, the cost investment is high, the usage amount of medicines is large, and the operation cost is also high.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims at providing a mine water processing system with clarification filter effectively reduces area and medicine use amount.

Therefore, the utility model discloses the technical scheme who adopts does: a mine water treatment system comprises an adjusting tank, a neutralization aeration tank, a disinfection discharge tank and a sludge tank, wherein mine water in the adjusting tank enters the neutralization aeration tank after being lifted by a first lifting pump, the mine water treatment system also comprises a clarification filter, mine water in the neutralization aeration tank enters the clarification filter after being lifted by a second lifting pump, a water inlet pipe of the second lifting pump is connected with PAC adding equipment, and a water outlet pipe of the second lifting pump is connected with PAM adding equipment and recapture agent adding equipment;

the clarifying filter comprises a machine body, a mud bucket, a clarifying layer, a filtering layer and a water outlet weir are sequentially arranged in the machine body from the bottom to the top, an ejector connected with a second lift pump is arranged at the bottom of the machine body, a first reaction chamber and a second reaction chamber are also arranged in the machine body, the water outlet of the ejector extends into the water inlet at the bottom of the first reaction chamber, the top end of the first reaction chamber extends into the position close to the top in the second reaction chamber, after sewage enters from the bottom of the first reaction chamber, overflowing from the top to a second reaction chamber, the water outlet of the second reaction chamber is positioned at the bottom of the second reaction chamber, the water outlet of the second reaction chamber is positioned below the clarification layer, the sewage flows into the effluent weir after passing through the clarification layer and the filtering layer in sequence after coming out of the second reaction chamber, the water outlet of the effluent weir is connected with the water inlet of the disinfection discharge pond, and the sludge discharge port of the sludge bucket is connected with the sludge pond.

By adopting the structure, the adjusting tank is used for homogenizing and homogenizing the mine water, the neutralizing aeration tank is used for aerating the mine water and adjusting the pH value of the mine water, the clarifying filter is integrated equipment for flocculation, clarification and filtration of the mine water, the disinfection discharge tank is used for discharging the effluent of the clarifying filter after disinfection, and the sludge tank is used for collecting the sludge precipitated in the clarifying filter, so that the centralized treatment is convenient.

Preferably, the filter layer is a light filter material floating on the water surface, a filter plate for blocking the light filter material is arranged below the water outlet weir, a plurality of uniformly distributed nozzles are arranged on the filter plate, the top end of the second reaction chamber extends to a position between the clarification layer and the filter layer, a backwashing device is arranged between the second reaction chamber and the filter layer, the backwashing device comprises a water inlet pipe, a backwashing main pipe and a plurality of uniformly distributed backwashing branch pipes which are sequentially connected, one end of each backwashing branch pipe is communicated with the backwashing main pipe, the other end of each backwashing branch pipe horizontally extends and is fixed on the inner wall of the machine body, a plurality of flushing nozzles facing the filter layer are arranged on each backwashing branch pipe, a backwashing water inlet and a backwashing water outlet are arranged on the machine body, the water inlet pipe is connected with the backwashing water inlet, and the backwashing water outlet is positioned, and is connected with the regulating reservoir. By adopting the structure, the filter layer floats on the whole water surface, the filtering area is increased, and the filtering speed is improved; the position of the filter layer can be adjusted through the height of the water surface, so that the height of the filter layer can be reduced during backwashing, the distance between the filter layer and the backwashing branch pipe is shortened, the backwashing effect is improved, and meanwhile, the light filter material is more dispersed during backwashing, so that the backwashing is more thorough.

Preferably, the machine body is cylindrical, the main backwash pipe is mounted above the second reaction chamber and is coaxial with the machine body, the backwash branch pipes extend radially, and the water inlet pipe extends horizontally and is located above the backwash branch pipes. By adopting the structure, the back washing branch pipes are reasonably arranged, the back washing effect is further improved, and the water inlet pipe is positioned above the back washing branch pipes, so that the energy is saved.

Preferably, the machine body is cylindrical, the diameter of the lower part of the machine body is gradually reduced from top to bottom to form a cone-shaped settling area, the top opening of the mud bucket is communicated with the upper part of the settling area, and the mud discharge port is positioned at the lower part of the mud bucket. By adopting the structure, the mud bucket is communicated with the upper part of the settling area, so that the sludge entering the mud bucket can not be circulated again under the action of hydraulic jet, the water content of the sludge in the mud bucket is reduced, and the settling effect is improved.

Preferably, the body is supported by four support legs arranged in a rectangular shape, the size of the mud bucket is gradually reduced from top to bottom, and the bottom of the mud bucket forms a support surface which is flush with the bottom surfaces of the support legs. The structure more than adopting does benefit to mud and gets into the bagger, and the bagger can be as the auxiliary stay of organism simultaneously, makes the mounting structure of organism more stable.

Preferably, the effluent weir is in a cross shape, and the cross center of the effluent weir is coincided with the center of the machine body. By adopting the structure, the effluent enters the effluent weir from the two sides of the effluent weir, the average distance between each spray head and the effluent weir is shortened, and the effluent speed of each spray head is more uniform.

Preferably, a lifting tank is arranged between the neutralization aeration tank and the clarification filter, a water outlet of the neutralization aeration tank is connected with a water inlet of the lifting tank, and the effluent of the lifting tank enters the clarification filter after being lifted by a second lifting pump. Structure more than adopting sets up the elevator pit and can protect the second elevator pump, avoids the second elevator pump to receive the influence of neutralization aeration pond mesocycle rivers, makes the pit water more abundant in neutralization aeration pond reaction simultaneously.

The utility model has the advantages that: the flocculation coagulation, sedimentation and filtration of the mine water are integrated through a clarifying filter, so that the floor area of equipment is effectively saved; when the ejector is used for ejecting, the hydrodynamic force is utilized to drive the sludge and the medicines in the clarifying filter to circulate, so that the flocculation effect and the medicine utilization rate are improved, the medicine usage amount is reduced, and the energy is saved; PAC gets into the inlet tube of second elevator pump, with mine water intensive mixing under the effect of second elevator pump, improves flocculation effect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a clarifying filter;

FIG. 3 is a schematic view of the structure of the weir;

fig. 4 is a schematic structural diagram of the backwashing device.

Detailed Description

The invention will be further described by way of examples with reference to the accompanying drawings:

as shown in figure 1, the mine water treatment system mainly comprises a regulating tank 1, a neutralization aeration tank 2, a disinfection discharge tank 3, a sludge tank 4, a clarification filter 5, a second lift pump 6, a lift tank 7, a PAM adding device 8, a recapture adding device 9, a first lift pump 10 and a PAC adding device 11.

As shown in figure 1, mine water enters a regulating reservoir 1 with average value and then is lifted into a neutralization aeration tank 2 through a first lifting pump 10, in the embodiment, two neutralization aeration tanks 2 which are connected in sequence are arranged, dead angles caused by overlarge volumes of the neutralization aeration tanks 2 can be avoided, aeration discs 203 are arranged at the bottoms of the two neutralization aeration tanks 2, the mine water is aerated and stirred, divalent iron ions are converted into trivalent iron ions, quicklime is added into the neutralization aeration tank 2 through quicklime adding equipment, the pH value of the mine water is regulated to about 8.0, sodium hypochlorite is added into the neutralization aeration tank 2 to precipitate manganese ions, the removal rate of subsequent unit iron and manganese is improved, a water outlet of the neutralization aeration tank 2 is connected with a water inlet of a lifting tank 7, the mine water in the lifting tank 7 enters a clarifying filter 5 after being lifted through a second lifting pump 6, PAC is added into a water inlet pipe of a second lifting pump 6 through PAC adding equipment 11, PAC and mine water are fully mixed under the pump pressure of the second lifting pump 6, PAM is added into a water outlet pipe of the second lifting pump 6 through PAM adding equipment 8, heavy metal capture agent is added into the water outlet pipe of the second lifting pump 6 through heavy metal capture agent adding equipment 9, the mixed liquid of the mine water and drugs enters a clarifying filter 5 and then sequentially generates flocculation, sedimentation and filtering, the water outlet of the clarifying filter 5 enters a disinfecting discharge pool 3, a disinfectant is added into the disinfecting discharge pool 3, the quality of the disinfected water outlet is superior to the discharge standard of coal industrial pollutants (GB 20426-2006), the water can be directly discharged, the sludge precipitated in the clarifying filter 5 is uniformly collected into a sludge pool 4, the sludge in the sludge pool 4 is filtered by a filter press, and the filtrate flows back to an adjusting pool 1, the filter cake is transported away for uniform treatment.

As shown in fig. 1 to 4, the clarifying filter 5 comprises a body 501, a hopper 502, a clarifying layer 503, a filtering layer 504 and a water outlet weir 505 are sequentially arranged in the body 501 from bottom to top, the body 501 is cylindrical and is supported by four support legs 511 which are arranged in a rectangular shape, the diameter of the lower part of the body 501 is gradually reduced from top to bottom to form a round platform-shaped settling zone 501c, two opposite sides of the bottom of the body 501 are respectively provided with a hopper 502, the top opening of each hopper 502 is communicated with the upper part of the settling zone 501c, a sludge discharge port is positioned at the lower part of the hopper 502 and is connected with a sludge pool 4, the size of the hopper 502 is gradually reduced from top to bottom, and the bottom of the hopper forms a support surface which is flush with the bottom surfaces of the support legs 511;

an ejector 508 connected with the second lift pump 6 is arranged at the bottom of the settling zone 501c, a first reaction chamber 506 and a second reaction chamber 507 are further arranged in the machine body 501, the water outlet of the ejector 508 extends into the water inlet at the bottom of the first reaction chamber 506, the first reaction chamber 506 is of a conical structure with the diameter gradually reduced from top to bottom, the top end of the first reaction chamber 506 extends to the position close to the top in the second reaction chamber 507, the second reaction chamber 507 is cylindrical, the water outlet of the second reaction chamber 507 is located at the bottom of the second reaction chamber, and the water outlet of the second reaction chamber 507 is located below the clarification layer 503;

the clarifying layer 503 is an inclined tube layer to improve the settling effect, the filtering layer 504 is a light filtering material floating on the water surface and is positioned above the second reaction chamber 507, the filtering layer 504 can be ceramsite or other light filtering materials, a filtering plate 512 is arranged below the water outlet weir 505, the filtering plate 512 is used for blocking the light filtering material and preventing the light filtering material from overflowing from the water outlet weir 505, the filtering plate 512 is horizontally arranged and fixed on the inner wall of the machine body 501, a plurality of uniformly distributed spray heads 510 are arranged on the filtering plate 512, and the outlet water is sprayed out from each spray head 510 after being filtered by the filtering layer 504;

the top end of the second reaction chamber 507 extends between the clarification layer 503 and the filtration layer 504, a back washing device 509 is arranged between the second reaction chamber 507 and the filtration layer 504, the back washing device 509 comprises a water inlet pipe 509a, a back washing main pipe 509b and a plurality of back washing branch pipes 509c which are uniformly distributed and are sequentially connected, the back washing main pipe 509b is arranged above the second reaction chamber 507 and is coaxially arranged with the machine body 501, one end of the back washing branch pipe 509c is communicated with the back washing main pipe 509b, the other end of the back washing branch pipe 509c horizontally extends and is fixed on the inner wall of the machine body 501, the back washing branch pipes 509c radially extend, the water inlet pipe 509a horizontally extends and is positioned above the back washing branch pipes 509c, a plurality of washing nozzles facing the filtration layer 504 are arranged on the back washing branch pipes 509c, a back washing water inlet 501a and, the backwashing water outlet 501b is positioned between the backwashing branch pipe 509c and the clarification layer 503, and can prevent water sprayed out of the backwashing branch pipe 509c from being directly discharged from the backwashing water outlet 501b, the backwashing water outlet 501b is connected with the regulating tank 1, when backwashing is performed, the backwashing water outlet 501b is firstly opened to reduce the water level so that the filter layer 504 is closer to the backwashing branch pipe 509c, then the backwashing water inlet 501a is opened, water enters from the backwashing water inlet 501a, sequentially flows through the water inlet pipe 509a, the backwashing main pipe 509b and the backwashing branch pipe 509c and is sprayed out of the washing nozzle, the filter layer 504 is backwashed, and is discharged from the backwashing water outlet 501b after backwashing, the filter layer 504 is always positioned above the backwashing branch pipe 509c during backwashing, the filter layer 504 is closer to the backwashing branch pipe 509c, and simultaneously the light filter material repeatedly rolls under the impact of, The water is dispersed and gathered, so that the backwashing effect is effectively improved;

the effluent weir 505 is cross-shaped, the cross center of the cross coincides with the center of the machine body 501, water sprayed by the spray heads 510 flows into the effluent weir 505 from two sides of the effluent weir 505, compared with the existing annular effluent weir, the average distance between each spray head 510 and the effluent weir 505 is shortened, the effluent efficiency is higher, meanwhile, the effluent of each spray head 510 is more uniform, and the water outlets of the effluent weir 505 are connected with the water inlets of the disinfection discharge pool 3;

the mine water is sprayed out through the sprayer 508, the sludge and the medicines in the settling zone 501c are driven to enter the first reaction chamber 506 together, flocculation coagulation is carried out in the first reaction chamber 506, alum floc is preliminarily formed and then overflows to the second reaction chamber 507 from the top, the flow speed in the second reaction chamber 507 is reduced, large alum floc is further formed, sedimentation is carried out, the precipitated sludge partially enters the mud hopper 502, partially enters the first reaction chamber 506 along with the mine water in the settling zone 501c again to become a carrier of flocculation, the flocculation effect is improved, the other mixed liquid flows upwards and sequentially passes through the clarifying layer 503 for secondary sedimentation, the filtering layer 504 for filtering, and then flows into the effluent weir 505, and the clarifying filter 5 effectively removes iron, manganese, sulfate, SS, heavy metals, part of COD and BOD in the mine water through a combined process of coagulation, flocculation and clarifying filtration, so as to reach the discharge standard.

Claims

1. The utility model provides a mine water processing system, includes equalizing basin (1), neutralization aeration tank (2), disinfection discharging pool (3) and sludge impoundment (4), mine water in equalizing basin (1) gets into neutralization aeration tank (2) after promoting through first elevator pump (10), its characterized in that: the mine water in the neutralization aeration tank (2) is lifted by a second lifting pump (6) and then enters the clarification filter (5), a water inlet pipe of the second lifting pump (6) is connected with PAC (PAC) adding equipment (11), and a water outlet pipe of the second lifting pump (6) is connected with PAM adding equipment (8) and recapture adding equipment (9);

the clarifying filter (5) comprises a machine body (501), a mud bucket (502), a clarifying layer (503), a filtering layer (504) and a water outlet weir (505) are sequentially arranged in the machine body (501) from bottom to top, an ejector (508) connected with a second lift pump (6) is arranged at the bottom of the machine body (501), a first reaction chamber (506) and a second reaction chamber (507) are further arranged in the machine body (501), a water outlet of the ejector (508) extends into a water inlet at the bottom of the first reaction chamber (506), the top end of the first reaction chamber (506) extends to the position close to the top in the second reaction chamber (507), sewage flows into the second reaction chamber (507) from the top after entering from the bottom of the first reaction chamber (506), a water outlet of the second reaction chamber (507) is positioned at the bottom of the second reaction chamber, and a water outlet of the second reaction chamber (507) is positioned below the clarifying layer (503), the sewage flows into the effluent weir (505) after sequentially passing through the clarification layer (503) and the filter layer (504) after coming out of the second reaction chamber (507), the water outlet of the effluent weir (505) is connected with the water inlet of the disinfection discharge tank (3), and the sludge discharge port of the sludge hopper (502) is connected with the sludge tank (4).

2. The mine water treatment system according to claim 1, characterized in that: the filter layer (504) is a light filter material floating on the water surface, a filter plate (512) for blocking the light filter material is arranged below the water outlet weir (505), a plurality of uniformly distributed spray heads (510) are arranged on the filter plate (512), the top end of the second reaction chamber (507) extends to the position between the clarification layer (503) and the filter layer (504), a back washing device (509) is arranged between the second reaction chamber (507) and the filter layer (504), the back washing device (509) comprises a water inlet pipe (509a), a back washing main pipe (509b) and a plurality of uniformly distributed back washing branch pipes (509c) which are sequentially connected, one end of each back washing branch pipe (509c) is communicated with the back washing main pipe (509b), the other end of each back washing branch pipe extends horizontally and is fixed on the inner wall of the machine body (501), and a plurality of washing spray heads facing the filter layer (504) are arranged on the back washing, a back flush water inlet (501a) and a back flush water outlet (501b) are arranged on the machine body (501), the water inlet pipe (509a) is connected with the back flush water inlet (501a), and the back flush water outlet (501b) is positioned between the back flush branch pipe (509c) and the clarification layer (503) and is connected with the regulating tank (1).

3. The mine water treatment system of claim 2, wherein: the machine body (501) is cylindrical, the back washing main pipe (509b) is arranged above the second reaction chamber (507) and is coaxial with the machine body (501), the back washing branch pipes (509c) extend in the radial direction, and the water inlet pipe (509a) extends horizontally and is located above the back washing branch pipes (509 c).

4. The mine water treatment system of claim 2, wherein: the machine body (501) is cylindrical, the diameter of the lower portion of the machine body is gradually reduced from top to bottom to form a cone-shaped settling area (501c), the top opening of the mud bucket (502) is communicated with the upper portion of the settling area (501c), and the mud discharging port is located on the lower portion of the mud bucket (502).

5. The mine water treatment system according to claim 4, characterized in that: the body (501) is supported by four support legs (511) which are arranged in a rectangular shape, the size of the mud bucket (502) is gradually reduced from top to bottom, and the bottom of the mud bucket forms a support surface which is flush with the bottom surfaces of the support legs (511).

6. The mine water treatment system of claim 2, wherein: the water outlet weir (505) is in a cross shape, and the cross center of the water outlet weir is coincided with the center of the machine body (501).

7. The mine water treatment system according to claim 1, characterized in that: a lifting tank (7) is arranged between the neutralization aeration tank (2) and the clarification filter (5), a water outlet of the neutralization aeration tank (2) is connected with a water inlet of the lifting tank (7), and the effluent of the lifting tank (7) enters the clarification filter (5) after being lifted by a second lifting pump (6).