Automatic precipitation circulating system for surface mine drainage

Abstract

The utility model relates to the technical field of strip mine mountain rain sewage treatment, in particular to an automatic sedimentation circulation system for surface mine drainage, which comprises a sedimentation tank, a gravel sedimentation tank, a grit sedimentation tank, a settling tank and a clean water tank are sequentially arranged in the sedimentation tank, and a control group is further arranged in the sedimentation tank. When the device is used, the settling pond is divided into the gravel settling pond, the grit settling pond, the settling pond and the clean water pond, and is matched with the control group for use, so that the gravel settling pond, the grit settling pond and the settling pond filter rain sewage discharged into the settling pond in a layered manner for multiple times, and different use scenes corresponding to pumps are formed at the same time, so that the automatic settling, storage and cyclic utilization of the rain sewage are facilitated; sludge is concentrated in the gravel sedimentation tank with the depth of two meters, so that mechanical dredging is facilitated, the overflow port is formed in the top of the sedimentation tank, rain sewage can be directly discharged during rainstorm, and the situation that the sedimentation tank is filled with the rain sewage and cannot be separated is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of open-pit mine rainwater and sewage treatment, in particular to an open-pit mine drainage automatic sedimentation circulation system. Background Art

[0002] Open-pit mines have destroyed surface vegetation due to mining. When the rainy season comes, water flows on the surface to form runoff, which is often mixed with mud, gravel, and some plastic paper bags. It gathers in the drainage ditch to form rainwater and sewage drainage. In heavy rain weather, the runoff carries a lot of mud, which makes the rainwater and sewage drainage treatment of open-pit mines face many difficulties.

[0003] Most open-pit mines do not have systematic sedimentation tanks or only have simple sedimentation tanks. Simple sedimentation tanks cannot completely treat sewage, and the sewage after sedimentation treatment is mostly discharged directly into the environment without recycling. Some larger mines have relatively complete rain and sewage sedimentation facilities, but the sedimentation tanks are not set up reasonably. Not only are the mud and gravel not separated and precipitated, making the mud pump unusable and each pool must be dredged mechanically, but the sedimentation tanks are also deep and cannot be completely cleaned each time, causing the clear water pool to be polluted. At the same time, when the sedimentation tanks are not equipped with flood discharge facilities, all sedimentation tanks are filled with rain and sewage during heavy rain and cannot be separated. The water in the clear water tanks cannot be recycled, which is extremely inconsistent with the current situation of recycling mine water resources that is strongly advocated.

[0004] In view of this, we propose an automatic sedimentation circulation system for open-pit mine drainage. Utility Model Content

[0005] The purpose of the utility model is to provide a system for automatically settling and circulating rainwater and sewage drainage in an open-pit mine, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An open-pit mine drainage automatic sedimentation circulation system includes a sedimentation tank, wherein the sedimentation tank is provided with a gravel settling tank for primary sedimentation, a sand settling tank for secondary sedimentation, a clearing tank for tertiary sedimentation and a clear water tank for storing clear water after sedimentation in sequence, and the sedimentation tank is also provided with a control group for detecting the liquid level of each tank and controlling the operation of the pump in each tank.

[0008] As a further solution of the utility model: the gravel settling pool is two meters deep, a water inlet is provided on the top of one side of the gravel settling pool, a through groove connected to the sand settling pool is provided on the side of the gravel settling pool away from the water inlet, and a filter screen for intercepting floating objects is provided on the side of the through groove close to the gravel settling pool.

[0009] As a further solution of the utility model: a sludge pump for discharging sludge into a gravel settling tank is provided in the grit settling tank.

[0010] As a further solution of the utility model: the bottom cross-section of the clear water pond is a special-shaped bottom surface with different heights, wherein the higher side of the bottom is close to the clear water pond, and the lower side of the bottom is close to the sand settling pond.

[0011] As a further solution of the utility model: an inlet pump for discharging clean water into the clean water tank is provided at the top of the higher side of the bottom of the clear pond, a fine sand pump for discharging the bottom settled fine sand into the sedimentation tank is provided at the top of the lower side of the bottom of the clear pond, and an overflow port for discharging flood is provided at the top of the clear pond.

[0012] As a further solution of the utility model: a discharge pump is provided in the clean water tank, and a discharge outlet of the discharge pump is provided with a discharge pipe for discharging clean water out of the clean water tank.

[0013] As a further solution of the utility model: the control group includes an automatic control cabinet, a float level meter and an ultrasonic depth sounder, wherein the ultrasonic depth sounder is respectively fixed on the top of the gravel settling tank, the sand settling tank and the clear water tank, and the float level meter is respectively fixed on the top of the clear water tank and the clean water tank.

[0014] As a further solution of the utility model: after detecting the threshold value, the float level meter and the ultrasonic depth sounder respectively transmit the signal from the signal output end of the float level meter and the ultrasonic depth sounder to the signal input end of the automatic control cabinet, and the automatic control cabinet receives the signal and controls the pump in each pool to operate through the signal output end.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the open-pit mine drainage automatic sedimentation circulation system, the sedimentation tank is divided into a gravel settling tank, a sand settling tank, a clear water tank and a clear water tank. When used in conjunction with the control group, the gravel settling tank, the sand settling tank and the clear water tank can filter the rainwater and sewage discharged into the sedimentation tank in multiple layers. At the same time, different pump corresponding usage scenarios are formed, which is conducive to the automatic sedimentation, storage and recycling of rainwater and sewage.

[0017] 2. In the open-pit mine drainage automatic sedimentation circulation system, the silt is concentrated in a gravel pool with a depth of two meters, thus facilitating mechanical dredging.

[0018] 3. In the open-pit mine drainage automatic sedimentation circulation system, an overflow port is set at the top of the sedimentation tank, which is conducive to the direct discharge of rainwater and sewage during heavy rain, avoiding the sedimentation tank being filled with rainwater and sewage and unable to separate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of this scheme.

[0020] The meaning of each number in the figure is:

[0021] 100. Gravel settling tank; 101. Water inlet; 102. Filter; 110. Grit settling tank; 111. Sludge pump; 120. Sedimentation tank; 121. Fine sand pump; 122. Inlet pump; 123. Overflow; 130. Clear water tank; 131. Discharge pump; 132. Discharge pipe; 200. Control group; 201. Automatic control cabinet; 202. Float level gauge; 203. Ultrasonic depth sounder. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 As shown, the present embodiment provides an open-pit mine drainage automatic sedimentation circulation system, including a sedimentation tank, wherein the sedimentation tank is provided with a gravel settling tank 100 for primary sedimentation, a sand settling tank 110 for secondary sedimentation, a clear water settling tank 120 for tertiary sedimentation and a clean water tank 130 for storing clean water after sedimentation in sequence, so that rainwater is filtered in layers for multiple times, and the clean water formed after filtration is stored for subsequent recycling. The sedimentation tank is also provided with a control group 200 for detecting the liquid level of each tank and controlling the operation of the pump in each tank. In conjunction with the layered filtration of the sedimentation tank, each tank forms a corresponding use environment for each pump, thereby collecting silt and reducing the possibility of rainwater being contaminated by silt.

[0024] The improvement of this embodiment lies in that by dividing the sedimentation tank into a gravel settling tank 100, a grit settling tank 110, a clear water tank 120 and a clean water tank 130, and cooperating with the control group 200, the gravel settling tank 100, the grit settling tank 110 and the clear water tank 120 can filter the rainwater and sewage discharged into the sedimentation tank in multiple layers. At the same time, different pumps corresponding to the usage scenarios are formed in each tank, which is beneficial to the automatic sedimentation, storage and recycling of rainwater and sewage.

[0025] Taking into account the presence of floating objects such as plastic paper bags in rainwater and the convenience of subsequent dredging, the depth of the gravel pool 100 is two meters. Compared with the traditional gravel pool 100, the two-meter-deep gravel pool 100 is more convenient for the excavator to clean the gravel and debris at the bottom of the pool. A water inlet 101 is provided on the top of one side of the gravel pool 100, and a through groove connected to the grit pool 110 is provided on the side of the gravel pool 100 away from the water inlet 101. A filter screen 102 is provided on the side of the through groove close to the gravel pool 100 to intercept floating objects and prevent them from entering the grit pool 110.

[0026] Considering that sludge will still settle at the bottom of the grit tank 110 after the initially filtered rainwater enters the grit tank 110, a sludge pump 111 is provided in the grit tank 110 for discharging the sludge into the gravel tank 100, so that the sludge in the grit tank 110 is collected in the gravel tank 100 for centralized treatment.

[0027] In order to centrally process the sediment at the bottom of the clearing pond 120, the bottom cross-section of the clearing pond 120 is a special-shaped bottom surface with different heights, wherein the higher side of the bottom is close to the clean water tank 130, and the lower side of the bottom is close to the grit tank 110. A fine sand pump 121 is provided at the top of the lower side of the bottom of the clearing pond 120 to discharge the bottom sediment into the grit tank 110, and an inlet pump 122 is provided at the top of the higher side of the bottom of the clearing pond 120 to discharge clean water into the clean water tank 130. At the same time, considering that the sedimentation tank will not have time to process during heavy rain, and there is a possibility that the filtered clean water will be polluted again, an overflow port 123 for flood discharge is provided at the top of the clearing pond 120. When continuous heavy rain weather causes instantaneous floods, rainwater and sewage will overflow from the flood discharge overflow port 123 with a diameter of 1000 mm.

[0028] Considering the convenience of subsequent use of clean water, a discharge pump 131 is provided in the clean water tank 130, and a discharge pipe 132 for discharging clean water from the clean water tank 130 is provided at the discharge port of the discharge pump 131. Through the discharge pump 131, the user can open the clean water discharge pump 131 at any time to use the clean water for road dust suppression spraying, greening watering, etc., and the clean water can also be pumped to a reservoir or a water storage tank for storage and utilization.

[0029] Taking into account the control of different pumps in each pool to achieve the effect of automatic circulation of the sedimentation tank, the control group 200 includes an automatic control cabinet 201, a float level meter 202 and an ultrasonic depth sounder 203, wherein the ultrasonic depth sounder 203 is respectively fixed on the top of the gravel settling tank 100, the sand settling tank 110 and the sedimentation tank 120, and the float level meter 202 is respectively fixed on the top of the sedimentation tank 120 and the clean water tank 130. After detecting the threshold, the float level meter 202 and the ultrasonic depth sounder 203 respectively transmit the signal from the signal output end of the float level meter 202 and the ultrasonic depth sounder 203 to the signal input end of the automatic control cabinet 201, and the automatic control cabinet 201 receives the signal and controls the pump in each pool to operate through the signal output end.

[0030] It should be further explained that the threshold of the sediment height at the bottom of the gravel pool 100 is 1 / 2 of the depth of the gravel pool 100. The ultrasonic depth sounder 203 at the top of the gravel pool 100 detects the position of the sediment at the bottom of the gravel pool 100 using the principle of sound wave detection. When the sediment height at the bottom of the gravel pool 100 exceeds the threshold, the ultrasonic depth sounder 203 transmits the detected signal from the signal output end to the signal input end of the automatic control cabinet 201. The automatic control cabinet 201 inputs the signal to the alarm or early warning device in the automatic control cabinet 201 through the signal output end, so that the alarm or the installed network early warning device sends an early warning message.

[0031] The depth of the grit chamber 110 is 3 to 4 meters, and the threshold of the sediment height at the bottom of the grit chamber 110 is 1 / 3 of the depth of the gravel chamber 100. The ultrasonic depth sounder 203 on the top of the grit chamber 110 uses the principle of sound wave detection to detect the position of the sediment at the bottom of the grit chamber 110. When the sediment height at the bottom of the grit chamber 110 exceeds the threshold, the detected signal is transmitted from the signal output end to the signal input end of the automatic control cabinet 201. The automatic control cabinet 201 analyzes the signal through the PLC and triggers the contactor through the PLC to open the sludge pump 111 to pump the sludge at the bottom of the tank into the gravel chamber 100.

[0032] The depth of the clear pond 120 is 3 to 4 meters, and the threshold of the sediment height at the bottom of the clear pond 120 is 1 / 5 of the depth of the clear pond 120. The detection method of the ultrasonic depth sounder 203 on the top of the grit chamber 110 is consistent with the detection and signal transmission method of the ultrasonic depth sounder 203 in the grit chamber 110 and the gravel chamber 100. The difference is that the automatic control cabinet 201 analyzes the signal through the PLC and triggers the contactor through the PLC to open the fine sand pump 121 to pump the sludge at the bottom of the pool into the grit chamber 110.

[0033] The position of the float level gauge 202 on the top of the clearing pool 120 is higher than 2 / 3 of the water level of the clearing pool 120 and lower than the horizontal position of the overflow port 123. When the water level in the clearing pool 120 reaches the water level set by the float level gauge 202, the float level gauge 202 floats up, and the steel ball in the float level gauge 202 rolls and touches the micro switch. The float level gauge 202 sends a signal from the signal output end to the signal input end of the automatic control cabinet 201. The automatic control cabinet 201 analyzes the signal through the PLC. After keeping the turbid water for 24 hours to fully clear it, the PLC triggers the contactor to open the introduction pump 122 to introduce the clean water in the clearing pool 120 into the clean water pool 130.

[0034] The position of the float level gauge 202 on the top of the clean water tank 130 is higher than 3 / 4 of the water level in the clean water tank 130. When the water level in the clear water tank 120 reaches the water level set by the float level gauge 202, the float level gauge 202 floats up, and the transmitted signal is the same as that of the float level gauge 202 in the clear water tank 120. The difference is that the automatic control cabinet 201 analyzes the signal through the PLC and triggers the contactor through the PLC to open the discharge pump 131 to pump the clean water to the reservoir or water tank for storage and utilization.

[0035] In summary, the working principle of this scheme is as follows:

[0036] The rainwater and sewage from the open-pit mine enter the gravel pool 100 from the drainage ditch through the water inlet 101. The large gravel and debris in the rainwater and sewage settle under the action of their own gravity, so that the rainwater and sewage undergo the first sedimentation. The filter 102 set at the outlet of the gravel pool 100 intercepts floating objects. When the gravel at the bottom of the gravel pool 100 exceeds the depth set by the ultrasonic depth meter 203 (1 / 2 of the depth of the gravel pool 100), the alarm in the automatic control cabinet 201 triggers an alarm or a network early warning device is installed to send a warning. The mine management personnel arrange for cleaning after receiving the alarm; the rainwater and sewage are filtered and precipitated in the gravel tank 100 and then enter the grit tank 110 for secondary sedimentation. When the gravel at the bottom of the grit tank 110 exceeds the set depth of the ultrasonic depth meter 203 (1 / 3 of the depth of the grit tank 110), the PLC will trigger the contactor to open the sludge pump 111 to pump the sludge at the bottom of the grit tank 110 into the gravel tank 100; the rainwater and sewage enter the clearing tank 120 for tertiary sedimentation after passing through the grit tank 110 When the sediment at the bottom of the pond exceeds the set depth (1 / 5 of the depth of the clear water pond 120), the PLC will trigger the fine sand pump 121 to pump the fine sand at the bottom of the clear water pond 120 into the grit chamber 110. At the same time, when continuous heavy rain weather causes instantaneous floods, rainwater and sewage will overflow from the flood discharge overflow port 123 at the top of the clear water pond 120 to prevent large-flow muddy water from entering the clear water pond 130. When the water level of the clear water pond 120 reaches the water level set by the float level gauge 202 (higher than the water level of the clear water pond 120), the PLC will trigger the fine sand pump 121 to pump the fine sand at the bottom of the clear water pond 120 into the grit chamber 110. At the same time, when continuous heavy rain weather causes instantaneous floods, rainwater and sewage will overflow from the flood discharge overflow port 123 at the top of the clear water pond 120 to prevent large-flow muddy water from entering the clear water pond 130. When the water level of the clear water tank 130 reaches the water level set by the float level gauge 202 (higher than 3 / 4 of the water level of the clear water tank 130), the PLC in the automatic control cabinet 201 will trigger the clean water discharge pump 131 to pump the clean water to the reservoir or water tank for storage and utilization.

[0037] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0038] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. An open-pit mine drainage automatic sedimentation circulation system, including a sedimentation tank, characterized in that: The sedimentation tank is provided with a gravel settling tank (100) for primary sedimentation, a sand settling tank (110) for secondary sedimentation, a tertiary sedimentation clearing tank (120) and a clear water tank (130) for storing clear water after sedimentation. The sedimentation tank is also provided with a control group (200) for detecting the liquid level of each tank and controlling the operation of the pump in each tank.

2. The open-pit mine drainage automatic sedimentation circulation system according to claim 1 is characterized by: The gravel pool (100) has a depth of two meters. A water inlet (101) is provided at the top of one side of the gravel pool (100). A through groove connected to the grit pool (110) is provided at the side of the gravel pool (100) away from the water inlet (101). A filter screen (102) for intercepting floating objects is provided at the side of the through groove close to the gravel pool (100).

3. The open-pit mine drainage automatic sedimentation circulation system according to claim 2 is characterized by: The grit chamber (110) is provided with a sludge pump (111) for discharging sludge into the gravel chamber (100).

4. The open-pit mine drainage automatic sedimentation circulation system according to claim 3 is characterized by: The bottom cross-section of the clear water pond (120) is a special-shaped bottom surface with different heights, wherein the higher side of the bottom is close to the clear water pond (130), and the lower side of the bottom is close to the sand settling pond (110).

5. The open-pit mine drainage automatic sedimentation circulation system according to claim 4 is characterized by: An inlet pump (122) for discharging clean water into the clean water tank (130) is provided at the top of the higher side of the bottom of the clear pond (120), and a fine sand pump (121) for discharging bottom sediment fine sand into the grit chamber (110) is provided at the top of the lower side of the bottom of the clear pond (120). An overflow port (123) for discharging flood water is provided at the top of the clear pond (120).

6. The open-pit mine drainage automatic sedimentation circulation system according to claim 5 is characterized by: A discharge pump (131) is provided in the clean water tank (130), and a discharge outlet of the discharge pump (131) is provided with a discharge pipe (132) for discharging clean water from the clean water tank (130).

7. The open-pit mine drainage automatic sedimentation circulation system according to claim 1 is characterized by: The control group (200) comprises an automatic control cabinet (201), a float level gauge (202) and an ultrasonic depth sounder (203), wherein the ultrasonic depth sounder (203) is respectively fixed on the top of the gravel settling tank (100), the sand settling tank (110) and the clearing tank (120), and the float level gauge (202) is respectively fixed on the top of the clearing tank (120) and the clean water tank (130).

8. The open-pit mine drainage automatic sedimentation circulation system according to claim 7 is characterized by: After detecting a threshold value, the float level meter (202) and the ultrasonic depth sounder (203) respectively transmit signals from the signal output ends of the float level meter (202) and the ultrasonic depth sounder (203) to the signal input end of the automatic control cabinet (201); the automatic control cabinet (201) receives the signal and controls the pump in each pool to operate through the signal output end.

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