Mining wastewater and sewage recovery treatment system

Abstract

The invention discloses a mining wastewater and sewage recovery treatment system which comprises a primary sedimentation tank, a sewage treatment tank and a waste storage tank, a first partition wall is arranged between the primary sedimentation tank and the sewage treatment tank, a second partition wall is arranged between the sewage treatment tank and the waste storage tank, the primary sedimentation tank is communicated with the sewage treatment tank, and the waste storage tank is communicated with the sewage treatment tank. An overflow tank is arranged in the sewage treatment tank, a secondary sedimentation tank is formed around the overflow tank, the sewage treatment tank and the overflow tank are in a shape like a Chinese character'hui ', and the overflow tank is connected with an external sewage treatment system through a pipeline; when in use, the mine wastewater and sewage recovery treatment system can ensure that construction water is circularly purified and used, saves resources, reduces dependence on external water sources, can also prevent sewage from being discharged to influence the environment, has good economic benefits and social benefits, and is suitable for popularization and use.

Description

Technical Field

[0001] The invention relates to the technical field of construction wastewater treatment, and in particular to a mining wastewater recovery and treatment system. Background Art

[0002] The sewage treatment system is an industrial equipment that can effectively treat urban domestic sewage, industrial wastewater, etc., and prevent sewage and pollutants from flowing directly into water areas. It is of great significance to improving the ecological environment, enhancing the quality of the city and promoting economic development.

[0003] When excavating tunnels or underground chambers, drilling equipment such as hand drills and multi-arm drills are needed. During the use of these equipment, a large amount of water is needed to cool the equipment to prevent the drill bit from being damaged too quickly. At the same time, water is also needed to reduce dust on the construction site. After use, this water will gather at a relatively low position on the ground, causing muddy pollution on the ground and affecting the construction environment.

[0004] A lot of the wastewater after cleaning is directly discharged to the outside, polluting the surrounding environment; traditional purification equipment cannot treat it because there is too much gravel and soil inside, and it is impossible to purify and recycle the wastewater, which makes the construction dependent on external water sources and the use effect is not ideal. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a mining wastewater recovery and treatment system which can ensure the recycling and purification of construction water during use, save resources and reduce dependence on external water sources, and avoid sewage discharge that affects the environment.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a mining wastewater recovery and treatment system, comprising a primary sedimentation tank, a sewage treatment tank and a waste storage tank, a first partition wall is provided between the primary sedimentation tank and the sewage treatment tank, a second partition wall is provided between the sewage treatment tank and the waste storage tank, the primary sedimentation tank is connected to the sewage treatment tank, an overflow tank is provided in the sewage treatment tank, a secondary sedimentation tank is formed around the overflow tank, the sewage treatment tank and the overflow tank are in the shape of a "U". The overflow tank is connected to an external sewage treatment system through a pipeline, and the sewage treatment system transports water to the construction site through a water storage tank.

[0007] Preferably, the primary sedimentation tank is connected to an external ditch and is provided with a sewage pipe connected to a waste storage tank, and the primary sedimentation tank is connected to the secondary sedimentation tank through a collecting trough.

[0008] Preferably, there are two collecting troughs which are symmetrically arranged in the primary sedimentation tank. The collecting trough is a U-shaped channel steel. A through hole is provided on the first partition wall. One end of the collecting trough is fixed in the through hole, and the other end is fixed to the inner wall of the primary sedimentation tank. A detachable filter screen is provided above the collecting trough.

[0009] Preferably, a plurality of evenly arranged filter holes are provided on the surface of the filter screen, and the filter screen is detachably connected to the collecting trough by bolts.

[0010] Preferably, the height of the collecting trough is higher than the partition wall of the overflow tank.

[0011] Preferably, the sewage treatment system comprises a water purification device for stirring and mixing and a drug adding chamber for adding drugs, wherein the drug adding chamber adds drugs into the water purification device to stir and purify water, and the water purification device is connected to a water storage tank via a pipeline.

[0012] Preferably, the primary sedimentation tank, sewage treatment tank, secondary sedimentation tank and overflow tank are all provided with liquid level controllers, and the primary sedimentation tank, sewage treatment tank and waste storage tank are all provided with flaps on top.

[0013] The invention discloses a mining wastewater recovery and treatment system, comprising a primary sedimentation tank, a sewage treatment tank and a waste storage tank, wherein a first partition wall is arranged between the primary sedimentation tank and the sewage treatment tank, a second partition wall is arranged between the sewage treatment tank and the waste storage tank, the primary sedimentation tank is communicated with the sewage treatment tank, an overflow tank is arranged in the sewage treatment tank, a secondary sedimentation tank is formed around the overflow tank, the sewage treatment tank and the overflow tank are in a "U" shape, and the overflow tank is connected to an external sewage treatment system through a pipeline; compared with the prior art, the mining wastewater recovery and treatment system can ensure the recycling and purification of construction water when in use, save resources and reduce dependence on external water sources, and can also avoid the impact of sewage discharge on the environment, and has good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The internal structure of a mining wastewater recovery and treatment system of the present invention is shown in FIG. Figure 1 .

[0015] Figure 2 The internal structure of a mining wastewater recovery and treatment system of the present invention is shown in FIG. Figure 2 .

[0016] Figure 3 The internal structure of a mining wastewater recovery and treatment system of the present invention is shown in FIG. Figure 3 .

[0017] Figure 4 For the present invention Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0018] Figure 5 The present invention is a schematic diagram of a mining wastewater recovery and treatment system.

[0019] In the figure: 1. ditch; 2. primary sedimentation tank; 21. sewage pipe; 22. collecting trough; 221. filter screen; 222. filter hole; 223. bolt; 23. liquid level controller; 3. sewage treatment tank; 31. overflow tank; 32. secondary sedimentation tank; 33. water purification device; 34. dosing cabin; 4. waste storage tank; 5. first partition wall; 6. second partition wall. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0021] Please refer to Figure 1-4 A mining wastewater recycling and treatment system comprises a primary sedimentation tank 2, a sewage treatment tank 3 and a waste storage tank 4, wherein a first partition wall 5 is provided between the primary sedimentation tank 2 and the sewage treatment tank 3, a second partition wall 6 is provided between the sewage treatment tank 3 and the waste storage tank 4, the primary sedimentation tank 2 is communicated with the sewage treatment tank 3, an overflow tank 31 is provided in the sewage treatment tank 3, a secondary sedimentation tank 32 is formed around the overflow tank 31 by a partition wall, the sewage treatment tank 3 and the overflow tank 31 are in a "U" shape, and the overflow tank 32 is connected to an external sewage treatment system through a pipeline; the sewage treatment system discharges the treated water into a water storage tank, and the water storage tank then pumps the water source to the construction site through a lifting pump, so as to realize dust removal and equipment cooling on the site, thereby realizing water circulation.

[0022] The primary sedimentation tank 2 is connected to the external ditch 1 and is provided with a sewage pipe 21 connected to the waste storage tank 4. The primary sedimentation tank 2 is connected to the secondary sedimentation tank 3 through a collecting trough 22, wherein the height of the collecting trough 22 is higher than the partition wall of the overflow tank 31.

[0023] The ditch 1 is set at the construction site, and its elevation is higher than the primary sedimentation tank 2. The construction wastewater can flow into the primary sedimentation tank 2 through natural flow in the ditch 1. After flowing in, the sewage and wastewater are first precipitated in the primary sedimentation tank 2. At this time, sand, dust, gravel, etc. are precipitated, and the upper liquid enters the secondary sedimentation tank 3 through the collecting trough 22.

[0024] Since an overflow tank 31 is provided in the secondary sedimentation tank 3, and the partition wall of the overflow tank 31 is lower than the collecting trough 22, the upper clean water flowing through the collecting trough 22 first enters the secondary sedimentation tank 32; as the upper clean water is continuously injected, the liquid level of the secondary sedimentation tank 32 continues to rise; the rising liquid level gradually flows into the overflow tank 31; at this time, fine solid impurities such as dust will appear at the bottom of the secondary sedimentation tank 32 again, and the sewage impurities entering the secondary sedimentation tank 31 are further reduced.

[0025] The solid impurities precipitated in the primary sedimentation tank 2 can be pumped into the waste storage tank 4 by a sludge pump or other pumps; a small amount of precipitated impurities in the secondary sedimentation tank 32 can be regularly cleaned by equipment such as an excavator, and the cleaned waste is also discharged into the waste storage tank 4, so that waste gas can be collected centrally.

[0026] The wastewater after secondary sedimentation finally enters the overflow tank 31 and is pumped into the sewage treatment system through the built-in pump for further purification to ensure the recycling of sewage.

[0027] Specifically, there are two collecting troughs 22 which are symmetrically arranged in the primary sedimentation tank 2. The collecting troughs 22 are U-shaped channel steels. A through hole is provided on the first partition wall 5. One end of the collecting trough 22 is fixed in the through hole, and the other end is fixed to the inner wall of the primary sedimentation tank 2. In this embodiment, the collecting trough 22 is horizontally arranged, and a removable filter screen 221 is provided above the collecting trough 22.

[0028] Furthermore, a plurality of evenly arranged filter holes 222 are provided on the surface of the filter screen 221, and the filter screen 222 is detachably connected to the collecting trough 22 by bolts 223; wherein the top of the filter screen 221 is raised, and the filter screen 221 can filter floating objects on the water surface through the filter holes 222, thereby preventing floating impurities from flowing into the sewage treatment tank 3.

[0029] Since the filter screen 222 is detachable, the filter screen 222 can be removed or replaced regularly to prevent floating objects from clogging the filter holes and affecting the water intake effect.

[0030] In this embodiment, the sewage treatment system includes a water purification device for stirring and mixing and a drug adding cabin for adding drugs. The drug adding cabin adds drugs into the water purification device to stir the purified water. The water purification device is connected to a water storage tank through a pipeline. The water storage tank transports the purified water to the construction site through a lifting pump. After the purified water arrives at the construction site, it can reduce dust at the construction site and also cool drilling equipment such as drill bits.

[0031] The water purification device is a large silo structure with common stirring devices such as stirring shaft and stirring paddle inside. The dosing chamber is a medicine storage container. When in use, the medicine in the dosing chamber is poured into the water purification device to further mix the medicine with sewage to purify the sewage.

[0032] Since the purified water is used for construction and not for domestic use, the chemicals in the dosing cabin are mainly used to remove odors. The chemicals may be microbial deodorants, bio-enzyme chemicals or sodium hypochlorite solutions, etc. Among them, microbial deodorants are made through microbial fermentation and can decompose odor molecules such as hydrogen sulfide and ammonia, with significant effects and being relatively environmentally friendly. Bio-enzyme chemicals are based on active bacteria and are extracted from a variety of natural substances. They can effectively remove odors and have bactericidal functions. Sodium hypochlorite solutions can eliminate odorous substances such as methyl sulfide. The above-mentioned chemicals can all achieve sewage purification and ensure the air environment at the construction site. Of course, other chemicals with the same effects can also be used.

[0033] As a preferred solution, the primary sedimentation tank 2, sewage treatment tank 3, secondary sedimentation tank 32 and overflow tank 31 are all provided with liquid level controllers. The liquid level controller, controller and pump maintain stable signal transmission, and control the operation of the corresponding pump by transmitting pulse signals, so as to realize remote monitoring of water level and liquid level control. In addition, flaps are provided on top of the primary sedimentation tank 2, sewage treatment tank 3 and waste storage tank 4.

[0034] The flap design allows operators to easily enter each pool for inspection, cleaning and maintenance, reducing maintenance time and labor intensity; it can also effectively prevent accidental falling objects and foreign objects from entering the pool, thereby reducing the risk of accidents and improving operational safety; it can also reduce odor and gas release from the sewage pool, improve the working environment, and ensure the health and safety of operators; the detachable design allows it to be quickly opened in different situations (such as dredging or emergency repairs), increasing the flexibility and adaptability of the system; it can also reduce water surface evaporation, maintain water level stability, and prevent external pollutants from entering the system to ensure the quality of treated water.

[0035] Please refer to Figure 5 When in use, construction wastewater is discharged into the primary sedimentation tank 2 through the ditch. After preliminary sedimentation in the primary sedimentation tank 2, the supernatant liquid in the primary sedimentation tank flows into the secondary sedimentation tank 32 through the collecting trough 22; in this process, the collecting trough 22 can filter out impurities floating on the water surface through the filter net 221, and after entering the secondary sedimentation tank 32, the wastewater is precipitated again inside; since the partition wall of the overflow tank 31 is lower than the collecting trough 22, as the upper clear water is continuously injected, the liquid level of the secondary sedimentation tank 32 continues to rise, and the rising liquid level gradually flows into the overflow tank 31; at this time, fine solid impurities such as dust will appear at the bottom of the secondary sedimentation tank 32 again, and the sewage impurities entering the overflow tank 31 will be further reduced.

[0036] The precipitated impurities in the primary sedimentation tank 2 can be discharged into the waste storage tank 4 through the pump group at the sewage pipe 21, and the impurities in the secondary sedimentation tank 32 can be regularly cleaned by machinery such as excavators, and the cleaned impurities are also poured into the waste storage tank 4, so that the waste can be collected centrally.

[0037] The sewage in the overflow tank 31 is transported to the water purification device through a pump group, so that the sewage is mixed with the reagent to remove the odor; after the water purification treatment, the purified water is transported to the water storage tank for preliminary storage; due to the low overall elevation, when using water for construction, a lifting pump is required to transport the water in the water storage tank to the construction site for dust removal and equipment cooling; and after use, sewage is formed again and merged into the ditch, and then flows into the primary sedimentation tank again through the ditch. Such a cycle can not only save water, but also reduce dependence on external water sources, and avoid the impact of sewage discharge on the environment, which has good economic and social benefits.

[0038] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A mining wastewater recovery and treatment system, characterized in that: It includes a primary sedimentation tank, a sewage treatment tank and a waste storage tank. A first partition wall is provided between the primary sedimentation tank and the sewage treatment tank, a second partition wall is provided between the sewage treatment tank and the waste storage tank, the primary sedimentation tank is connected to the sewage treatment tank, an overflow tank is provided in the sewage treatment tank, a secondary sedimentation tank is formed around the overflow tank, the sewage treatment tank and the overflow tank are in the shape of a "U". The overflow tank is connected to an external sewage treatment system through a pipeline, and the sewage treatment system transports water to the construction site through a water tank.

2. The mining wastewater recovery and treatment system according to claim 1 is characterized in that: The primary sedimentation tank is connected to an external ditch and is provided with a sewage pipe connected to a waste storage tank, and the primary sedimentation tank is connected to the secondary sedimentation tank through a collecting trough.

3. The mining wastewater recovery and treatment system according to claim 2 is characterized in that: There are two collecting troughs which are symmetrically arranged in the primary sedimentation tank. The collecting troughs are U-shaped channel steels. A through hole is arranged on the first partition wall. One end of the collecting trough is fixed in the through hole, and the other end is fixed to the inner wall of the primary sedimentation tank. A detachable filter screen is arranged above the collecting trough.

4. The mining wastewater recovery and treatment system according to claim 3 is characterized in that: The surface of the filter screen is provided with a plurality of evenly arranged filter holes, and the filter screen is detachably connected to the collecting tank via bolts.

5. The mining wastewater recycling and treatment system according to any one of claims 2 to 4, characterized in that: The height of the collecting trough is higher than the partition wall of the overflow tank.

6. The mining wastewater recovery and treatment system according to claim 1 is characterized in that: The sewage treatment system comprises a water purification device for stirring and mixing and a drug adding cabin for adding drugs, wherein the drug adding cabin adds drugs into the water purification device for stirring and purifying water, and the water purification device is connected to a water storage tank through a pipeline.

7. The mining wastewater recovery and treatment system according to claim 1 is characterized in that: Liquid level controllers are provided in the primary sedimentation tank, sewage treatment tank, secondary sedimentation tank and overflow tank, and flaps are provided above the primary sedimentation tank, sewage treatment tank and waste storage tank.

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