Drinking water source protection device

Abstract

The utility model discloses a drinking water source protection device which comprises a water collecting tank and a water drain pipe, and the water collecting tank is arranged in the flowing direction of underground water. The drain pipe is installed on the side wall of the water collecting tank and communicates the interior and exterior of the water collecting tank, so that underground water is conveyed into the water collecting tank through the drain pipe in the flowing direction. When pollutants are accidentally leaked or leaked due to accidents, the polluted underground water can be conveyed into the water collecting tank through the water drainage pipe, the polluted underground water is prevented from converging into a nearby stream to pollute a drinking water source, and therefore the drinking water source can be effectively protected.

Description

Technical Field

[0001] The present application belongs to the field of groundwater treatment technology, and specifically relates to a drinking water source protection device. Background Art

[0002] Chemical plants generate a variety of wastewater during their production process. If the wastewater treatment process is not properly managed or an accident occurs, it will cause the discharge or leakage of wastewater, causing damage to the ecological environment of the water bodies around the chemical plants and seriously affecting the use of water bodies.

[0003] In the related technology, chemical plants usually construct environmental protection facilities such as tank anti-leakage cofferdams, regional anti-seepage ground, regional anti-seepage cofferdams, underground sewage pipe anti-seepage geotextiles, rainwater collection pools, accident pools and sewage treatment stations to prevent sewage and wastewater from being discharged or leaked, and prevent sewage and wastewater from polluting the ecological environment of water bodies, but there is a lack of treatment measures for leaked pollutants. Utility Model Content

[0004] In order to solve the technical problem of the lack of treatment measures for leaked pollutants in the related art, the present application provides a drinking water source protection device, the drinking water source protection device comprising:

[0005] The water collection tank is set in the direction of groundwater flow;

[0006] A drainage pipe is installed on the side wall of the water collection tank, connecting the inside and outside of the water collection tank, so that groundwater is transported to the water collection tank through the drainage pipe along the flow direction.

[0007] In some embodiments, the drain pipe is installed in the side wall of the water collecting tank and is inclined downward from the outside to the inside of the water collecting tank.

[0008] In some embodiments, the installation slope of the drain pipe is 3%.

[0009] In some embodiments, a filter screen is installed at one end of the drain pipe close to the outside of the water collection tank.

[0010] In some embodiments, a permeable layer is disposed on the outer side of the water collection tank close to the drainage pipe, and the permeable layer is used for groundwater to pass through and filter the groundwater.

[0011] In some embodiments, the permeable layer is formed by layered compaction of crushed stones, with a thickness of 10 cm to 30 cm.

[0012] In some embodiments, an inspection port is provided above the water collection tank.

[0013] In some embodiments, a water quality monitoring device is installed in the water collection tank, and the water quality monitoring device is used to monitor the water quality of the groundwater in the water collection tank.

[0014] In some embodiments, the drinking water source protection device further comprises:

[0015] The extraction component is connected to the water collection tank and is used to extract groundwater in the water collection tank.

[0016] In some embodiments, the extraction component includes:

[0017] A submersible pump installed at the bottom of the water collection tank;

[0018] a first water intake pipe and a first gate valve, wherein the first water intake pipe is connected to the submersible pump for extracting clean groundwater, and the first gate valve is connected in series to the first water intake pipe;

[0019] The second water intake pipe and the second gate valve, the second water intake pipe is connected to the submersible pump for extracting polluted groundwater, and the second gate valve is connected in series to the second water intake pipe

[0020] According to the drinking water source protection device provided by one or more embodiments of the present application, the drinking water source protection device includes a water collection tank and a drainage pipe. Since the water collection tank is arranged in the flow direction of groundwater, the drainage pipe is installed on the side wall of the water collection tank, connecting the inside and outside of the water collection tank, so that the groundwater is transported to the water collection tank through the drainage pipe along the flow direction. Then, when the pollutants are accidentally leaked or leaked due to an accident, the contaminated groundwater can be transported to the water collection tank through the drainage pipe to prevent the contaminated groundwater from merging into the nearby stream and polluting the drinking water source, so that the effective protection of the drinking water source can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a drinking water source protection device in one or more embodiments of the present application;

[0022] Figure 2 for Figure 1 Sectional view at AA.

[0023] Description of reference numerals:

[0024] 1. Water quality monitoring equipment; 2. Water collection tank; 3. Groundwater flow direction; 4. Permeable layer; 5. First gate valve; 6. Drain pipe; 8. Inspection port; 9. Submersible pump; 10. Second water intake pipe; 11. Second gate valve; 12. First water intake pipe. DETAILED DESCRIPTION

[0025] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0026] Chemical plants generate a variety of wastewater during their production process. If the wastewater treatment process is not properly managed or an accident occurs, it will cause the discharge or leakage of wastewater, causing damage to the ecological environment of the water bodies around the chemical plants and seriously affecting the use of water bodies.

[0027] For example, a chemical plant that produces fuel ethanol by fermentation of ferroalloy industrial tail gas is built in a drinking water source protection area. A variety of wastewater is generated during the fuel ethanol manufacturing process. The wastewater contains pollutants such as COD, BOD5, SS, NH3-N, TP and TDS. The pollutants in the wastewater seriously pollute underground drinking water sources, damage the ecological environment of the water body, and affect the normal use of drinking water sources.

[0028] In the related technology, chemical plants usually construct environmental protection facilities such as tank anti-leakage cofferdams, regional anti-seepage ground, regional anti-seepage cofferdams, underground sewage pipe anti-seepage geotextiles, rainwater collection pools, accident pools and sewage treatment stations to prevent sewage and wastewater from being discharged or leaked, and prevent sewage and wastewater from polluting the ecological environment of water bodies, but there is a lack of treatment measures for leaked pollutants.

[0029] In order to solve the technical problem of the lack of treatment measures for leaked pollutants in the relevant technology, please refer to Figure 1 to Figure 2 The present application provides a drinking water source protection device, which includes a water collecting tank 2 and a drainage pipe 6. The water collecting tank 2 is arranged in the flow direction of groundwater. The drainage pipe 6 is installed on the side wall of the water collecting tank 2, connecting the inside and outside of the water collecting tank 2, so that the groundwater is transported to the water collecting tank 2 through the drainage pipe 6 along the flow direction. Then, when pollutants are accidentally leaked or leaked due to an accident, the contaminated groundwater can be transported to the water collecting tank 2 through the drainage pipe 6 to prevent the contaminated groundwater from flowing into the nearby stream and polluting the drinking water source, thereby achieving effective protection of the drinking water source. In the case where the water quality requirements around the site of a chemical plant are particularly high, for example, when a chemical plant is built in a drinking water source protection area, effective protection of the drinking water source can also be achieved through a drinking water source protection device.

[0030] It should be noted that when constructing the water collection pool 2, the construction site of the water collection pool 2 can be selected based on the groundwater flow direction 3 in the hydrological survey report, and the construction address of the water collection pool 2 can be determined on the groundwater flow direction 3, so that the groundwater can be transported to the water collection pool 2 along the groundwater flow direction 3, ensuring that the water collection pool 2 can collect groundwater. The foundation treatment of the water collection pool 2 takes measures such as replacing graded gravel according to the geological survey report to ensure the basic bearing capacity of the water collection pool 2 so that the foundation does not sink after the construction of the water collection pool 2 is completed. The body of the water collection pool 2 adopts a reinforced concrete structure, and the foundation treatment is carried out according to the geological survey report to prevent the water collection pool 2 from settling and cracking, which affects the normal use of the water collection pool 2. The wall of the water collection pool 2 is treated with anti-seepage and waterproofing to prevent other groundwater that is not within the collection range from merging into the water collection pool 2 and affecting the collection amount of contaminated groundwater.

[0031] The reinforced concrete cast-in-place construction process is formed, and the construction joints between the bottom plate and the pool wall, and between the pool wall and the top plate adopt water-stopping measures such as steel plate waterstops or rubber waterstops to ensure that there is no water leakage. The bottom plate thickness, pool wall thickness and top plate thickness of the water collection pool 2 are determined based on structural mechanics, soil mechanics and fluid mechanics verification calculations to ensure that the water collection pool 2 can be used safely after it is built. Specifically, the bottom plate thickness and pool wall thickness of the water collection pool 2 can be 30cm, and the top plate thickness can be 12cm. The bottom plate thickness, pool wall thickness and top plate thickness are not limited in this application and can be set according to actual conditions.

[0032] The size of the water collection pool 2 can be determined based on the amount of groundwater shown in the hydrological survey report to ensure that after the water collection pool 2 is built, the contaminated groundwater collected in the water collection pool 2 will not overflow when pollutants leak. The bottom elevation of the water collection pool 2 is 1m lower than the dry season water level line to ensure that the water collection pool 2 can collect groundwater normally during the dry season. It should be noted that the distance between the bottom elevation of the water collection pool 2 and the dry season water level line can be set according to actual needs to ensure that the water collection pool 2 can collect groundwater normally during the dry season, and this application does not limit it.

[0033] The drain pipe 6 is installed in the side wall of the water collection pool 2 and is tilted downward from the outside to the inside of the water collection pool 2. The drain pipe 6 uses a PVC pipe with a diameter of ∮10 cm. The installation slope of the drain pipe 6 is 3% to allow groundwater to be smoothly injected into the water collection pool 2. It should be noted that the pipe diameter and installation slope of the drain pipe 6 can be set according to actual needs to ensure that groundwater is smoothly injected into the water collection pool 2, and this application does not limit it.

[0034] A filter screen is installed at one end of the drain pipe 6 close to the outside of the water collection tank 2. The filter screen can be gauze, which is wrapped around the end of the drain pipe 6 to prevent fine sand from flowing into the water collection tank 2. In some embodiments, the filter screen can also be a filter cover with filter holes, and the aperture of the filter holes can be set according to actual needs, which is not limited in this application.

[0035] See also Figure 1 to Figure 2 A permeable layer 4 is provided on the outer side of the water collection tank 2 near the drainage pipe 6. The permeable layer 4 is used for groundwater to pass through and filter the groundwater. The gauze is wrapped and wound around one end of the drainage pipe 6 near the permeable layer 4. The permeable layer 4 can be made of crushed stones with a diameter of 2 cm to 5 cm, which are compacted in layers and have a layer thickness of 10 cm to 30 cm. It is ensured that the permeable layer 4 does not change the flow direction 3 of the groundwater, so that the groundwater can smoothly pass through the permeable layer 4 and be injected into the water collection tank 2. The permeable layer 4 plays a reverse filtering role to prevent clay from clogging the drainage pipe 6.

[0036] It should be noted that the diameter of the gravel and the thickness of the gravel layers can be set according to actual needs, and this application does not limit them.

[0037] See also Figure 1 to Figure 2 The water collecting pool 2 adopts a closed structure, and an inspection port 8 is provided above the water collecting pool 2 (the top of the water collecting pool 2). The size of the inspection port 8 is 2m*2m, and a pedestrian ladder is provided between the inspection port 8 and the bottom of the water collecting pool 2, so that maintenance personnel can inspect the internal conditions of the water collecting pool 2. The pedestrian ladder is made of ∮22 galvanized round steel or stainless steel welded on site, and can also be provided according to actual needs.

[0038] A water quality monitoring device 1 and an extraction component are installed in the water collection tank 2. The water quality monitoring device 1 is used to monitor the water quality of the groundwater in the water collection tank 2. The water quality monitoring device 1 can be an online analyzer for PH, COD, ammonia nitrogen, etc., which is used to detect pollutant indicators such as COD, BOD5, SS, NH3-N, TP and TDS of the contaminated groundwater in the water collection tank 2, and display the indicator data in real time on the display in the central control duty room, which is convenient for detecting pollutant indicators of groundwater.

[0039] See also Figure 1 to Figure 2, the extraction component is connected to the water collection tank 2, and is used to extract groundwater in the water collection tank 2. The extraction component includes a submersible pump 9, a first water intake pipe 12, a first gate valve 5, a second water intake pipe 10 and a second gate valve 11, and the submersible pump 9 is installed at the bottom of the water collection tank 2. The first water intake pipe 12 is connected to the submersible pump 9 for extracting clean groundwater, and the first gate valve 5 is connected in series to the first water intake pipe 12. The second water intake pipe 10 is connected to the submersible pump 9 for extracting polluted groundwater, and the second gate valve 11 is connected in series to the second water intake pipe 10. In this way, two directions of water intake by the submersible pump 9 can be realized: when the pollutant index of the groundwater meets the standard and the water quality is normal, the first gate valve 5 is opened, the second gate valve 11 is closed, and the first water intake pipe 12 is connected to the first gate valve 5 to extract the groundwater in the water collection tank 2 for production or living water. When the water quality monitoring equipment 1 detects that the water quality of the groundwater in the water collection tank 2 is abnormal, the water supply to the production or living area is stopped, the cause of the abnormal water quality is analyzed, and emergency disposal is taken. The second gate valve 11 is opened, the first gate valve 5 is closed, and the second water intake pipe 10 is connected to the second gate valve 11 to extract the substandard groundwater in the water collection tank 2 and transport it to the water treatment station to ensure that the sewage does not overflow into the nearby stream and cause drinking water pollution.

[0040] It should be noted that the submersible pump 9 is installed at the bottom of the water collection tank 2, and the size of the submersible pump 9 is determined according to the water output shown in the hydrological survey report. Two submersible pumps 9 can be configured, one of which is a spare. The size of the inspection port 8 needs to take into account the model of the submersible pump 9 and the size of the water quality monitoring equipment 1, so as to facilitate the inspection of the submersible pump 9 and the water quality monitoring equipment 1. At the same time, the size of the water collection tank 2 can be comprehensively determined based on the amount of groundwater shown in the hydrological survey report and the model of the submersible pump 9, to ensure that after the water collection tank 2 is built, the contaminated groundwater collected in the water collection tank 2 will not overflow when pollutants leak, and meet the use requirements.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A drinking water source protection device, characterized in that: The drinking water source protection device comprises: The water collection tank is set in the direction of groundwater flow; A drainage pipe is installed on the side wall of the water collection tank, connecting the inside and outside of the water collection tank, so that groundwater is transported to the water collection tank through the drainage pipe along the flow direction.

2. The drinking water source protection device according to claim 1, characterized in that: The drain pipe is installed in the side wall of the water collecting tank and is inclined downward from the outside to the inside of the water collecting tank.

3. The drinking water source protection device according to claim 2, characterized in that: The installation slope of the drain pipe is 3%.

4. The drinking water source protection device according to claim 1, characterized in that: A filter screen is installed at one end of the drain pipe close to the outside of the water collecting tank.

5. The drinking water source protection device according to any one of claims 1 to 4, characterized in that: The water collection tank is provided with a permeable layer near the outer side of the drain pipe, and the permeable layer is used for groundwater to pass through and filter the groundwater.

6. The drinking water source protection device according to claim 5, characterized in that: The permeable layer is formed by layered compaction of crushed stones, with a thickness ranging from 10 cm to 30 cm.

7. The drinking water source protection device according to any one of claims 1 to 4 and 6, characterized in that: An inspection port is provided above the water collecting tank.

8. The drinking water source protection device according to any one of claims 1 to 4 and 6, characterized in that: A water quality monitoring device is installed in the water collection tank, and the water quality monitoring device is used to monitor the water quality of the groundwater in the water collection tank.

9. The drinking water source protection device according to claim 8, characterized in that: The drinking water source protection device also includes: The extraction component is connected to the water collection tank and is used to extract groundwater in the water collection tank.

10. The drinking water source protection device according to claim 9, characterized in that: The extraction component comprises: A submersible pump installed at the bottom of the water collection tank; a first water intake pipe and a first gate valve, wherein the first water intake pipe is connected to the submersible pump for extracting clean groundwater, and the first gate valve is connected in series to the first water intake pipe; A second water intake pipe and a second gate valve, wherein the second water intake pipe is connected to the submersible pump for extracting contaminated groundwater, and the second gate valve is connected in series to the second water intake pipe.

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