Road coring system-based tail water treatment device and method

Abstract

The present application relates to sewage treatment technical field, specifically disclose a kind of tail water treatment device and method based on road coring system, including recovery component and processing component;Recovery component is used to suck tail water after road coring to processing component;Processing component includes: sedimentation tank, for receiving the tail water that recovery component sucks out, multiple first water outlet pipes are arranged on the sedimentation tank along the circumference, and first valve is provided on the first water outlet pipe;Liquid collecting pipe, for receiving the tail water containing oil stain exported by first water outlet pipe;Side pipe, one end is connected with liquid collecting pipe, the other end is placed in sedimentation tank, and side pipe is provided with circulating pump, and oil suction component is provided on side pipe;Filtering component is connected with sedimentation tank, for filtering treatment to supernatant after settling, oil stain removal in sedimentation tank.The present application not only can realize solid-liquid separation of road coring tail water, and can be well realized to remove oil stain in tail water, reduce the risk of filtering component blockage.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and specifically to a tailwater treatment device and method based on a road core sampling system. Background Technology

[0002] Road core sampling is a sampling and testing step in highway construction. It involves extracting regularly shaped columnar samples (core samples) from the road surface structure using core sampling equipment. These samples are then used for analysis of the road foundation structure to help understand the characteristics of the road surface materials, including the density and compressive strength of the road surface. Based on these characteristics, targeted construction techniques can be designed.

[0003] Road coring utilizes borehole coring, typically involving a rotating drill bit drilling into the road layer. During this process, water or other liquids are used to cool the drill bit and remove drill cuttings. This liquid forms tailwater during drilling. When the drill bit contacts the ground during road coring, it generates a large amount of drill cuttings and gravel. These particulate materials are usually suspended or settled in the water. Therefore, the tailwater contains a significant amount of solid particles. Furthermore, the drilling process involves the use of oily lubricants and other grease-containing chemical reagents, meaning the tailwater produced by road coring contains mud, sand, and oil. To reduce tailwater residue, cleaning is usually performed after coring; however, the mud, sand, and oil in the road coring tailwater pose a challenge to its treatment.

[0004] Currently, there are no devices or methods for treating road core sampling tailwater. Conventional wastewater treatment containing sludge usually involves sedimentation and filtration. While filtration and sedimentation can separate solids and remove solid impurities from the tailwater, they cannot treat oil contamination. If oil contamination in the wastewater is to be treated by filtration after sedimentation, fine filtration components, such as membrane filtration, are required to remove oil. However, oil contamination easily clogs these fine filtration components. Furthermore, road core sampling tailwater treatment involves pumping the tailwater to the ground for sedimentation and filtration. Large solid particles (such as sand and gravel) in the tailwater can cause significant wear and tear on the pump.

[0005] Therefore, it is necessary to design a treatment system suitable for road core sampling tailwater. Summary of the Invention

[0006] The purpose of this invention is to provide a tailwater treatment device and method based on a road core sampling system, so as to realize the recycling and treatment of road core sampling tailwater. It can not only achieve solid-liquid separation, but also effectively remove oil stains from the tailwater and reduce the risk of filter component clogging.

[0007] This invention is achieved through the following technical solution:

[0008] A wastewater treatment device based on a road core sampling system includes a recovery component and a treatment component; the recovery component is used to pump the wastewater after road core sampling to the treatment component;

[0009] The treatment unit is used for sedimentation, oil removal, and filtration of effluent. The treatment unit includes:

[0010] The settling tank is connected to the recovery unit and receives the tailwater pumped out by the recovery unit. Multiple first outlet pipes are arranged around the circumference of the settling tank. The tailwater containing oil in the settling tank is discharged from the settling tank through the first outlet pipes. A first valve is installed on the first outlet pipe.

[0011] The collection pipe is used to receive the oily wastewater discharged from the first outlet pipe;

[0012] The bypass pipe has one end connected to the liquid collection pipe and the other end placed in the settling tank. The bypass pipe is equipped with a circulation pump and an oil suction assembly.

[0013] The filter assembly, connected to the settling tank, is used to filter the supernatant that has been settled and degreased in the settling tank.

[0014] The wastewater treatment device of the present invention is designed based on the characteristics of wastewater after road core sampling. Under the premise of effectively treating wastewater, it can avoid the problem of filter components being clogged by oil pollution.

[0015] Specifically, the present invention improves a conventional settling tank by having a first outlet pipe on its upper side wall for discharging tailwater containing oil. The tailwater containing oil on the liquid surface in the settling tank can be discharged from the settling tank for treatment using the first outlet pipe.

[0016] Since the settling tank of the present invention is designed as a cylinder with a large cross-section, if only one first outlet pipe is set up to drain the tailwater containing oil on the liquid surface inside the settling tank, the efficiency will be reduced and the effect will be worse. The present invention uses multiple first outlet pipes arranged around the circumference of the settling tank, which can drain the tailwater containing oil from different positions on the liquid surface inside the settling tank, thereby improving the draining efficiency and making it easier to drain the tailwater containing oil.

[0017] Meanwhile, this invention utilizes a collection pipe to collect the oily wastewater discharged from the first outlet pipe, enabling the circulation of oily wastewater using only one bypass pipe, thus avoiding the problem of complex piping caused by using a number of bypass pipes matching the number of first outlet pipes.

[0018] This invention utilizes an oil suction assembly installed on a bypass pipe to remove oil from the tailwater entering the bypass pipe.

[0019] The supernatant, after settling and oil removal in the settling tank, enters the filter assembly for filtration.

[0020] In summary, the wastewater treatment device of the present invention can use the recovery component to pump the wastewater from road core sampling, and use the settling tank and bypass pipe to settle and remove oil from the wastewater before filtration. That is, the wastewater treatment device of the present invention can not only achieve solid-liquid separation of wastewater, but also effectively remove oil from the wastewater and reduce the risk of clogging of the filter component.

[0021] In a preferred embodiment, the collecting pipe is a ring-shaped pipe located outside the settling tank. One end of the first outlet pipe is connected to the settling tank, and the other end is connected to the collecting pipe. The height of the collecting pipe is lower than the end of the first outlet pipe connected to the settling tank. Compared to having the collecting pipe and the first outlet pipe at the same height, the lower height of the collecting pipe facilitates the drainage of oily wastewater from the settling tank into the collecting pipe for collection. After oil absorption treatment, the wastewater is returned to the settling tank, ensuring that the liquid level in the settling tank can continuously support the drainage of oily wastewater.

[0022] In a preferred embodiment, the collecting pipe is inclined, and one end of the bypass pipe is connected to the side wall or bottom of the lowest end of the collecting pipe.

[0023] This invention, by setting the collection pipe at an incline and connecting it to the lowest end of the collection pipe via a bypass pipe, facilitates the extraction of tailwater from the collection pipe into the bypass pipe and allows for the complete removal of all tailwater from the collection pipe, thus preventing any residual tailwater from remaining in the collection pipe.

[0024] In a preferred embodiment, the settling tank includes an upper tank and a lower tank, which are sealed together by a first telescopic section, and a first outlet pipe is provided on the upper tank.

[0025] The outer wall of the lower tank is provided with a first telescopic component for supporting the upper tank and adjusting the height of the upper tank; at least two first telescopic components are symmetrically arranged along the circumference of the outer wall of the lower tank.

[0026] This invention, by setting the middle sidewall of the settling tank as a retractable first telescopic section, can adjust the height of the liquid level in the settling tank relative to the inlet of the first outlet pipe, ensuring that the height of the liquid level in the settling tank corresponds to the height of the inlet of the first outlet pipe, so as to achieve the degreasing treatment of wastewater containing effluent.

[0027] Meanwhile, based on the first telescopic section structure, the present invention provides a corresponding first telescopic component. The first telescopic component is not only used to adjust the relative height of the upper tank, but also to support the upper tank and ensure the stability of the settling tank.

[0028] In another alternative, the settling tank is equipped with an inlet pipe for replenishing water into the settling tank, so that the liquid level of the tailwater in the settling tank is positioned at the corresponding position of the inlet of the first outlet pipe, and an inlet valve is provided on the inlet pipe.

[0029] That is, the present invention also employs a method of adjusting the relative position of the liquid level in the settling tank and the inlet of the first outlet pipe by adding water to the settling tank.

[0030] In a preferred embodiment, a control unit is also included, the control unit comprising:

[0031] A liquid level sensor is used to collect the liquid level of the tailwater in the settling tank;

[0032] The controller is communicatively connected to the liquid level sensor, the inlet valve, the first valve, and the first telescopic assembly. The controller is used to control the opening or closing of the inlet valve and the first valve based on the liquid level signal collected by the liquid level sensor, or to control the extension and retraction of the first telescopic assembly and to control the opening or closing of the first valve.

[0033] The control unit of the present invention collects the liquid level in the settling tank based on the liquid level sensor and adjusts the relative height of the liquid level in the settling tank with respect to the inlet of the first outlet pipe. The liquid level in the settling tank can be adjusted to the position corresponding to the inlet of the first outlet pipe by replenishing or extending and retracting the settling tank.

[0034] In a preferred embodiment, the recovery assembly includes a recovery pipe and a suction pump;

[0035] The recovery pipe includes a straight pipe section, one end of which is connected to the settling tank, and the other end is inserted into the channel formed after the road core sampling; a filter structure is installed at the end of the straight pipe section inserted into the channel.

[0036] The present invention, through its filter structure, can trap large particles of impurities in the core sample hole, preventing damage to the suction pump and thus extending its service life.

[0037] In a preferred embodiment, a vibrating head is provided on the outer side of the filter structure; the vibrating head includes a sliding member and a support plate; the sliding member is slidably connected to the outer wall of the straight pipe section; the support plate is provided on the outer side of the bottom of the filter structure.

[0038] Multiple connecting rods are provided between the sliding component and the support plate. The connecting rods extend and retract through the vertical displacement of the sliding component. The multiple connecting rods are located on the outside of the filter structure. A filter screen is provided between two adjacent connecting rods.

[0039] The sliding member achieves vertical displacement through the second telescopic member.

[0040] The vibrating head of this invention is set on the outside of the filter structure, forming a secondary filtration with the filter structure. This helps to protect the filter structure and avoid the problem of reduced suction rate caused by deposits on the filter structure.

[0041] Furthermore, the filter screen of the vibrating head of the present invention is fixed by a connecting rod, and the vibration of the filter screen can be achieved by the extension and retraction of the connecting rod, which can reduce filter screen adhesion and avoid the problem of reduced water pumping efficiency caused by filter screen adhesion.

[0042] In a preferred embodiment, the bottom of the filter structure is provided with a plurality of first through holes, and / or the support plate is provided with a plurality of second through holes; the diameter of the second through holes is larger than the diameter of the filter structure and the filter screen.

[0043] The first through hole provided by this invention can achieve filtration, increase the filtration area, and thus improve the suction rate. The second through hole provided by this invention can facilitate the removal of particulate impurities placed between the filter screen and the filtration structure.

[0044] In a preferred embodiment, an annular connecting plate is provided on the outer side of the straight pipe section above the sliding member;

[0045] The annular connecting plate and the sliding member are connected by a connecting rod, and the annular connecting plate is connected to the telescopic end of the second telescopic member.

[0046] By setting an annular connecting plate, this invention not only does not affect the function of the second telescopic component on the sliding component, but also avoids the corrosion problem caused by the second telescopic component being inserted into the tailwater, thus protecting the second telescopic component.

[0047] In a preferred embodiment, a second telescopic section is provided on the straight pipe section at a position corresponding to the height of the settling tank. When the sidewall of the settling tank expands or contracts, the recovery pipe can adapt to the changes. In practice, the straight pipe section located below the second telescopic section is usually fixed by a ground-based bracket.

[0048] In a preferred embodiment, the outer wall of the straight pipe section is provided with a protrusion arranged along its axial direction, and the inner wall of the sliding member is provided with a groove that mates with the protrusion.

[0049] The above configuration enables the sliding component to move vertically, and the protrusion has a guiding function. Furthermore, the protrusion is located on the outer wall of the straight pipe section, which avoids the problem of mud and sand adhering to the groove caused by setting the groove on the outer wall of the straight pipe section.

[0050] In a preferred embodiment, a plurality of first outlet pipes are evenly arranged around the circumference of the settling tank, one end of the side pipe is located on the central axis of the settling tank, one end of the side pipe is vertically arranged and its outlet is located above the liquid surface inside the settling tank.

[0051] The above-mentioned configuration of the present invention can achieve uniform water discharge from the settling tank in the circumferential direction, and can also allow the tailwater after being treated by the oil suction component to fall into the tailwater in the settling tank at a certain height difference. This not only replenishes the volume of tailwater in the settling tank, but also causes an impact at the center of the liquid surface in the settling tank, forming waves that spread outward from the inside of the liquid surface. This facilitates pushing the oily tailwater on the liquid surface into the first outlet pipe. In other words, the above-mentioned configuration of the present invention facilitates the recycling treatment of oily tailwater.

[0052] In a preferred embodiment, the oil-absorbing assembly includes a housing, both ends of which are detachably connected to a bypass pipe, and the housing is filled with oil-absorbing filler; the oil-absorbing assembly is arranged vertically.

[0053] The above-described configuration of the present invention facilitates the replacement of the oil suction component, and the vertical arrangement of the oil suction component further facilitates the oil suction treatment of the passing tailwater.

[0054] Oil-absorbing fillers are existing technologies and can be natural adsorbent materials such as plant fibers, seaweed, and charcoal.

[0055] In a preferred embodiment, the filtration assembly includes a coarse filtration assembly and a fine filtration assembly;

[0056] The coarse filter assembly is connected to the drain pipe at the bottom of the settling tank and is used to filter the tailwater containing mud and sand at the bottom of the settling tank.

[0057] The fine filtration unit is connected to the second outlet pipe on the side wall of the settling tank and to the coarse filtration unit, and is used to filter the filtrate from the coarse filtration unit and the supernatant after the oil has been removed from the settling tank.

[0058] The treatment method based on the above-mentioned wastewater treatment device includes the following steps:

[0059] S1. The wastewater generated after road core sampling is pumped into a settling tank using a recycling component for settling.

[0060] S2. After settling, adjust the height of the liquid level in the settling tank relative to the inlet of the first outlet pipe so that the height of the liquid level in the settling tank corresponds to the inlet of the first outlet pipe.

[0061] S3. Open the first valve and the circulation pump to allow the oily tailwater in the settling tank to circulate and remove oil in the circulation loop formed by the bypass pipe and the settling tank until there is no oil on the liquid surface in the settling tank. Then close the first valve and the circulation pump.

[0062] S4. Discharge the supernatant in the settling tank to the filter assembly for filtration.

[0063] S5. Discharge the solid impurities deposited at the bottom of the settling tank.

[0064] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0065] 1. This invention improves upon conventional settling tanks by providing a first outlet pipe on the upper side wall for discharging oil-containing wastewater. This, along with a collection pipe and a bypass pipe equipped with an oil-absorbing component, creates a circulation loop between the bypass pipe and the settling tank. This allows the oil-containing wastewater in the settling tank to undergo oil adsorption within the circulation loop. In other words, this invention enables wastewater to settle and be degreased within the settling tank before being discharged for filtration. While effectively treating the wastewater, it avoids the problem of the filter component becoming clogged due to oil contamination.

[0066] 2. The vibrating head of the present invention is set on the outside of the filter structure, forming a two-stage filtration with the filter structure. Most of the deposits will adhere to the filter screen of the vibrating head. The extension and retraction of the connecting rod can be realized by the second telescopic member. The vibration of the filter screen can be achieved by the extension and retraction of the connecting rod, which can reduce the adhesion of the filter screen and avoid the problem of reduced pumping efficiency caused by the adhesion of the filter screen. Attached Figure Description

[0067] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0068] Figure 1 This is a schematic diagram of the wastewater treatment device of the present invention;

[0069] Figure 2 This is a schematic diagram of the settling tank of the present invention;

[0070] Figure 3 This is a top view of the settling tank of the present invention;

[0071] Figure 4 This is a schematic diagram of the connection between the vibrating head and the recovery pipe of the present invention. Figure 1 ;

[0072] Figure 5 This is a schematic diagram of the connection between the vibrating head and the recovery pipe of the present invention. Figure 2 ;

[0073] Figure 6 This is a top view of the vibrating head of the present invention in its unfolded state;

[0074] Figure 7 This is a front view of the vibrating head of the present invention in a contracted state;

[0075] Figure 8 This is a top view of the vibrating head of the present invention in a contracted state;

[0076] Figure 9 This is a logic block diagram of the control unit of the present invention.

[0077] The attached diagram shows the markings and corresponding component names:

[0078] 1-Settling tank; 2-Recovery pipe; 3-Collection pipe; 4-Bypass pipe; 5-Oil suction assembly; 6-Vibrating head; 7-Coarse filter assembly; 8-Fine filter assembly; 9-First telescopic assembly;

[0079] 11-Upper tank; 12-First telescopic section; 13-Lower tank; 14-Liquid inlet pipe; 15-First water outlet pipe; 16-Second water outlet pipe; 17-Sewage pipe;

[0080] 111 - Limit block; 131 - Positioning block;

[0081] 21-Straight pipe section; 22-Second expansion joint; 23-Filter structure;

[0082] 61-Sliding component; 62-Support plate; 63-Connecting rod; 64-Filter screen; 65-Connecting rod; 66-Annular connecting plate. Detailed Implementation

[0083] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. The illustrative embodiments and descriptions of this invention are for illustrative purposes only and are not intended to limit the invention. The embodiments described below are some, but not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0084] In the following description, numerous specific details are set forth to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, materials, or methods are not specifically described to avoid obscuring the invention. Unless otherwise specified, the materials, instruments, and reagents used in the following embodiments are commercially available. Unless otherwise specified, the techniques used in the embodiments are conventional methods well known to those skilled in the art.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0086] Example 1:

[0087] like Figures 1-3As shown, in order to address the problem that existing technologies lack a specific approach for the recycling and treatment of wastewater from road core sampling, this embodiment provides a wastewater treatment device based on a road core sampling system, including a recycling component and a treatment component; the recycling component is used to pump the wastewater from road core sampling to the treatment component; the treatment component is used to perform sedimentation, oil removal, and filtration treatment on the wastewater.

[0088] The recycling components include a recycling pipe 2 and a suction pump;

[0089] The recovery pipe 2 includes a straight pipe section 21. One end of the straight pipe section 21 is connected to the settling tank 1 in the treatment assembly, and the other end is inserted into the channel formed after road coring. A suction pump is used to draw the wastewater from the channel into the settling tank 1. Specifically, a support is installed on the ground to fix the recovery pipe 2 vertically, and the recovery pipe 2 is lowered into the channel. The specific structure of the support is existing technology and will not be described in detail here; it can be the same support used to fix the drill rod during coring. Preferably, to reduce damage to the suction pump from the wastewater, a filter structure 23 is installed at the end of the straight pipe section 21 inserted into the channel. The filter structure 23 traps large particulate impurities in the wastewater. To avoid clogging, the pores of the filter structure 23 are relatively large, trapping only large particulate impurities in the wastewater. Small particulate impurities can then settle and separate in the settling tank 1.

[0090] The processing components include:

[0091] Settling tank 1 is connected to the recovery assembly and receives the tailwater pumped out by the recovery assembly. Specifically, an inlet pipe 14 is provided on the upper side wall of settling tank 1. One end of the inlet pipe 14 is connected to the inside of settling tank 1, and the other end is connected to the top of recovery pipe 2 through a bend. In use, settling tank 1 is fixed by another bracket, so that there is a gap between the bottom of settling tank 1 and the ground, which is conducive to the discharge of the settled solids. Specifically, a drain pipe 17 is provided at the bottom of settling tank 1, and a drain valve is correspondingly provided on drain pipe 17. Preferably, the bottom of settling tank 1 has an arc structure, which is conducive to the discharge of the settled solid particles. Furthermore, a second outlet pipe 16 is provided on the lower side wall of settling tank 1. The second outlet pipe 16 is used to discharge the supernatant in settling tank 1 after settling, and a second valve is correspondingly provided at the inlet of the second outlet pipe 16.

[0092] In this embodiment, in order to remove oil from the tailwater containing oil on the liquid surface of the settling tank 1, a plurality of first water outlet pipes 15 are arranged along the same circumference on the upper part of the side wall of the settling tank 1. The tailwater containing oil in the settling tank 1 is discharged from the settling tank 1 through the plurality of first water outlet pipes 15, and each first water outlet pipe 15 is provided with a corresponding first valve.

[0093] The collection pipe 3 is used to receive the oily wastewater discharged from the first outlet pipe 15; the collection pipe 3 is a ring pipe and is located outside the settling tank 1. Preferably, one end of the first outlet pipe 15 is connected to the settling tank 1 and the other end is connected to the collection pipe 3, and the height of the collection pipe 3 is lower than the end of the first outlet pipe 15 connected to the settling tank 1.

[0094] A bypass pipe 4 is connected at one end to a collecting pipe 3 and at the other end to a settling tank 1. The bypass pipe 4 is equipped with a circulation pump and an oil suction assembly 5. Specifically, the oil suction assembly 5 includes a housing, both ends of which are connected to the bypass pipe 4, preferably in a detachable manner. The housing is filled with oil-absorbing packing material, which can be any existing material capable of oil absorption. Preferably, the oil suction assembly 5 is vertically arranged to improve oil suction efficiency.

[0095] In this embodiment, by utilizing the set liquid collection pipe 3, the tailwater discharged from multiple first water outlet pipes 15 can be circulated using a single bypass pipe 4. Preferably, the liquid collection pipe 3 is set at an angle, and one end of the bypass pipe 4 is connected to the side wall or bottom of the lowest end of the liquid collection pipe 3.

[0096] Preferably, multiple first outlet pipes 15 are evenly arranged around the circumference of the settling tank 1. One end of the bypass pipe 4 is located on the central axis of the settling tank 1. One end of the bypass pipe 4 is vertically arranged and its outlet is located above the liquid surface in the settling tank 1. This arrangement can utilize the height difference between the outlet of the bypass pipe 4 and the liquid surface in the settling tank 1 so that when the tailwater circulates from the bypass pipe 4 into the settling tank 1, waves are generated on the liquid surface in the settling tank 1 that spread from the inside out, which is beneficial for pushing the oily tailwater on the liquid surface into the first outlet pipe 15.

[0097] In this embodiment, the top of the settling tank 1 is preferably a closed structure to prevent tailwater from splashing out from the top of the settling tank 1.

[0098] In this embodiment, in order to ensure that the liquid level of the settling tank 1 corresponds to the inlet of the first outlet pipe 15, an inlet pipe for replenishing water into the settling tank 1 is provided on the settling tank 1. Water is replenished into the settling tank 1 through the inlet pipe to raise the liquid level so that the liquid level of the tailwater in the settling tank 1 is placed at the inlet of the first outlet pipe 15. An inlet valve is provided on the inlet pipe.

[0099] A filter assembly, connected to the settling tank 1, is used to filter the supernatant that has settled and been degreased in the settling tank 1. Preferably, the filter assembly includes a coarse filter assembly 7 and a fine filter assembly 8. The coarse filter assembly 7 is connected to the drain pipe 17 at the bottom of the settling tank 1 and is used to filter the tailwater containing mud and sand at the bottom of the settling tank 1. The coarse filter assembly 7 can be a vertical filter screen, that is, a filter screen capable of trapping mud and sand is set in the filter frame, and pressure is applied for filtration when necessary. The fine filter assembly 8 can be a membrane filter. Both the coarse filter assembly 7 and the fine filter assembly 8 are existing technologies, and their specific structures will not be described in detail.

[0100] The fine filter assembly 8 is connected to the second outlet pipe 16 on the side wall of the settling tank 1 and to the coarse filter assembly 7, and is used to filter the filtrate of the coarse filter assembly 7 and the supernatant after the settling tank 1 has been degreased.

[0101] The processing method in this embodiment includes the following steps:

[0102] S1. Start the suction pump and pump the wastewater generated after road core sampling into the settling tank 1 through the recovery pipe 2. After the suction is completed, make the liquid level in the settling tank 1 lower than the inlet of the first outlet pipe 15 for settling. The road core sampling operation will take multiple samples from different locations, and the wastewater in multiple channels can be pumped into the same settling tank 1 for settling treatment. The specific number of channels of wastewater that the same settling tank 1 can handle is determined according to the volume of wastewater in the channels and the volume of the settling tank 1. During the process of pumping wastewater into the settling tank 1, keep the drain valve corresponding to the drain pipe 17, the second valve corresponding to the second outlet pipe 16, and the first valve on the first outlet pipe 15 in the closed state.

[0103] S2. After settling, the height of the liquid level in the settling tank 1 relative to the inlet of the first outlet pipe 15 is adjusted so that the liquid level in the settling tank 1 corresponds to the inlet of the first outlet pipe 15. In this embodiment, by opening the inlet valve, water is introduced into the settling tank 1 through the inlet pipe to raise the liquid level in the settling tank 1 until the liquid level in the settling tank 1 corresponds to the inlet of the first outlet pipe 15.

[0104] S3. Open the first valve and the circulation pump to allow the oily tailwater in the settling tank 1 to circulate and remove oil in the circulation loop formed by the bypass pipe 4 and the settling tank 1 until there is no oil on the liquid surface in the settling tank 1. Then close the first valve and the circulation pump.

[0105] S4. Open the second valve corresponding to the second outlet pipe 16 to discharge the supernatant in the settling tank 1 to the fine filter assembly 8 for filtration; the liquid below the second outlet pipe 16 is retained in the settling tank 1.

[0106] S5. Close the second valve corresponding to the second outlet pipe 16 and open the drain valve corresponding to the drain pipe 17. Discharge the solid impurities and residual supernatant deposited at the bottom of the settling tank 1 through the drain pipe 17 to the coarse filter assembly 7 for filtration. The filter cake is recycled and the filtrate enters the fine filter assembly 8 for filtration. The settling tank 1 can be rinsed and the rinsing water is discharged through the drain pipe 17 to the coarse filter assembly 7 for filtration.

[0107] This embodiment improves upon the conventional settling tank 1 by adding a first outlet pipe 15 on its upper side wall for discharging oil-containing wastewater. This, along with a collection pipe 3 and a bypass pipe 4 equipped with an oil-absorbing component 5, creates a circulation loop between the bypass pipe 4 and the settling tank 1. This allows the oil-containing wastewater in the settling tank 1 to undergo oil adsorption treatment within the circulation loop. In other words, this embodiment can complete wastewater settling and oil removal within the settling tank 1 before discharging it for filtration. This effectively treats the wastewater and avoids clogging of the filtration component due to oil contamination.

[0108] Example 2:

[0109] like Figure 9 As shown, this embodiment is based on Embodiment 1, but differs from Embodiment 1 in that it enables automatic control of the wastewater treatment device. In this embodiment, the wastewater treatment device further includes a control unit, which includes:

[0110] A liquid level sensor is used to collect the liquid level of the tailwater in settling tank 1; and it is installed inside settling tank 1.

[0111] The controller is connected in communication with the level sensor, inlet valve, first valve, second valve, drain valve, suction pump and circulation pump to realize automatic control of suction of tailwater, automatic replenishment of water into settling tank 1, circulation to remove oil stains, discharge of supernatant and discharge of solids and residual supernatant at the bottom of settling tank 1.

[0112] The specific process is as follows:

[0113] After the wastewater treatment device is connected and installed, the controller controls the suction pump to start and draw wastewater into the settling tank 1. The liquid level sensor collects the liquid level of the wastewater in the settling tank 1 in real time and transmits it to the controller. When the liquid level of the wastewater in the settling tank 1 reaches the set value, which is equal to or slightly higher than the position of the inlet of the first outlet pipe 15, the suction pump is turned off and settling begins. If the liquid level of the wastewater in the settling tank 1 does not reach the set value after the suction is completed, the controller controls the inlet valve to open and add water to the settling tank 1 until the liquid level of the wastewater in the settling tank 1 reaches the set value. Then, the controller controls the inlet valve to close and settling begins.

[0114] When the settling time reaches the set value, indicating that settling is complete, the controller opens the first valve and the circulation pump to remove oil contaminants until the liquid surface is free of oil. The controller then opens the second valve to discharge the supernatant in the settling tank 1 to the fine filter assembly 8 for filtration. When the liquid level in the settling tank 1 is lower than the inlet of the second outlet pipe 16, the controller opens the drain valve to discharge the solid impurities and residual supernatant deposited at the bottom of the settling tank 1 through the drain pipe 17 to the coarse filter assembly 7 for filtration.

[0115] Example 3:

[0116] This embodiment is based on Embodiment 1, but differs from Embodiment 1 in that: in order to better adjust the height of the liquid level in the settling tank 1 relative to the inlet of the first outlet pipe 15 without introducing additional liquid, the structure of the settling tank 1 is improved in this embodiment.

[0117] In this embodiment, the settling tank 1 includes an upper tank body 11 and a lower tank body 13, which are sealed together by a first telescopic section 12. A first water outlet pipe 15 is provided on the upper tank body 11, and a second water outlet pipe 16 is provided on the lower tank body 13. The first telescopic section 12 can be made of foldable plastic. The upper and lower ends of the first telescopic section 12 are respectively sealed and fixed to the bottom of the upper tank body 11 and the top of the lower tank body 13. The bottom of the upper tank body 11 and the top of the lower tank body 13 can each be provided with an annular fixing groove. The upper and lower ends of the first telescopic section 12 are respectively fixed in the two annular fixing grooves, and a sealing ring is provided in the annular fixing groove.

[0118] The outer wall of the lower tank 13 is provided with a first telescopic component 9 for supporting the upper tank 11 and adjusting the height of the upper tank 11; at least two first telescopic components 9 are symmetrically arranged along the circumference of the outer wall of the lower tank 13. Specifically, a positioning block 131 is provided on the outer wall of the lower tank 13, and a limit block 111 is provided on the outer wall of the upper tank 11; the first telescopic component 9 can be a hydraulic cylinder, with the fixed end of the first telescopic component 9 fixed to the positioning block 131, and the telescopic end connected to the lower end face of the limit block 111, so that the vertical height of the upper tank 11 can be adjusted by telescoping the first telescopic component 9.

[0119] In a preferred embodiment, in order to facilitate the height adjustment of the upper tank 11, a second telescopic section 22 is provided on the straight pipe section 21 at a position corresponding to the height of the settling tank 1. The function and material of the second telescopic section 22 are the same as those of the first telescopic section 12.

[0120] Example 4:

[0121] like Figure 9As shown, this embodiment is based on embodiment 3, but differs from embodiment 3 in that it enables automatic control of the wastewater treatment device. In this embodiment, the wastewater treatment device further includes a control unit, which includes:

[0122] A liquid level sensor is used to collect the liquid level of the tailwater in settling tank 1; and it is installed inside settling tank 1.

[0123] The controller is connected in communication with the liquid level sensor, the first telescopic component 9, the first valve, the second valve, the drain valve, the suction pump, and the circulation pump to realize automatic control of suction of tailwater, automatic adjustment of the height of the upper tank 11, circulation to remove oil stains, discharge of supernatant, and discharge of solids and residual supernatant at the bottom of the settling tank 1.

[0124] In this embodiment, except for the automatic height adjustment process of the upper tank 11, the rest of the control process is the same as in Embodiment 2. The automatic height adjustment process of the upper tank 11 is as follows:

[0125] When the liquid level in the settling tank 1 does not reach the set value, the controller controls the first telescopic component 9 to retract, causing the upper tank body 11 to move downward until the liquid level sensor detects that the liquid level in the settling tank 1 has reached the set value, and then controls the first telescopic component 9 to stop retracting and maintain its position.

[0126] Example 5:

[0127] like Figures 1-8 As shown, this embodiment is based on any one of embodiments 1-4. In this embodiment, a vibrating head 6 is provided on the outside of the filter structure 23. The vibrating head 6 includes a sliding member 61 and a support plate 62. The sliding member 61 is slidably connected to the outer wall of the straight pipe section 21. Specifically, the outer wall of the straight pipe section 21 is provided with a protrusion arranged along its axial direction, and the inner wall of the sliding member 61 is provided with a groove that cooperates with the protrusion. The support plate 62 is provided on the outside of the bottom of the filter structure 23. The support plate 62 can be an annular plate or composed of multiple fixed plates.

[0128] Multiple connecting rods 63 are provided between the sliding member 61 and the support plate 62. The connecting rods 63 extend and retract through the vertical displacement of the sliding member 61. The multiple connecting rods 63 are located on the outside of the filter structure 23. A filter screen 64 is provided between two adjacent connecting rods 63. Specifically, the connecting rod 63 is composed of two adjusting plates that are hinged to each other at one end. The other end of one adjusting plate is hinged to the lower end face of the sliding member 61, and the other adjusting plate is hinged to the upper end face of the support plate 62. Since the support plate 62 is fixed to the bottom outside of the filter structure 23, and the filter structure 23 is fixed... At the lower end of the straight pipe section 21, when the sliding member 61 moves downward, it forms an angle of less than 180° between the inner sides of the two adjusting plates constituting the connecting rod 63 (retracted state). The inner side of the adjusting plate refers to the side close to the filter structure 23. When the sliding member 61 moves upward, it forms an angle of 180° between the inner sides of the two adjusting plates constituting the connecting rod 63 (expanded state). This process is repeated, realizing the repeated contraction of the connecting rod 63, thereby realizing the vibration of the vibrating head 6, which can reduce the solid impurities attached to the filter screen 64 and ensure the suction efficiency.

[0129] The sliding member 61 achieves vertical displacement through the second telescopic member. Specifically, the second telescopic member can be a hydraulic cylinder. The fixed end of the second telescopic member is fixed to the straight pipe section 21, and the telescopic end is connected to the sliding member 61.

[0130] In a preferred embodiment, to prevent the telescopic end of the second telescopic component from being immersed in the tailwater, an annular connecting plate 66 is provided on the outside of the straight pipe section 21 above the sliding member 61; the annular connecting plate 66 and the sliding member 61 are connected by a connecting rod 65, and the annular connecting plate 66 is connected to the telescopic end of the second telescopic component.

[0131] In a preferred embodiment, the bottom of the filter structure 23 is provided with a number of first through holes.

[0132] In a preferred embodiment, the support plate 62 is provided with a number of second through holes.

[0133] In this embodiment, the vibrating head 6 is located outside the filter structure 23, forming a secondary filtration with the filter structure 23. Most of the deposits will adhere to the filter screen 64 of the vibrating head 6. The extension and retraction of the connecting rod 63 can be achieved by the second telescopic member. The extension and retraction of the connecting rod 63 can cause the filter screen 64 to vibrate, which can reduce the adhesion of the filter screen 64 and avoid the problem of reduced pumping efficiency caused by the adhesion of the filter screen 64.

[0134] In a preferred case, such as Figure 9 As shown, the second telescopic component is connected to the controller, and the vibration of the vibratory head 6 can be achieved by controlling the extension and retraction of the second telescopic component through the controller.

[0135] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0136] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and objectives of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

Claims

1. A tailwater treatment device based on a road core sampling system, characterized in that, It includes a recycling component and a treatment component; the recycling component is used to pump the wastewater from road core sampling to the treatment component; The treatment component is used to perform sedimentation, oil removal, and filtration treatment on the effluent, and the treatment component includes: Settling tank (1) is connected to the recycling component and receives the tailwater pumped out by the recycling component. Multiple first outlet pipes (15) are arranged around the settling tank (1) in the circumferential direction. The tailwater containing oil in the settling tank (1) is discharged from the settling tank (1) through the first outlet pipes (15). A first valve is provided on the first outlet pipe (15). The collection pipe (3) is used to receive the tailwater containing oil discharged from the first outlet pipe (15); A bypass pipe (4) is connected at one end to the liquid collection pipe (3). The bypass pipe (4) is equipped with a circulation pump and an oil suction assembly (5) is installed on the bypass pipe (4). The other end of the bypass pipe (4) is vertically arranged and its outlet is located above the liquid surface in the settling tank (1). This allows the tailwater treated by the oil suction assembly (5) to fall into the tailwater in the settling tank (1) at a certain height difference, replenishing the tailwater volume in the settling tank (1) and forming waves that spread from the inside to the outside on the liquid surface. The liquid level in the settling tank (1) corresponds to the inlet of the first outlet pipe (15); The settling tank (1) includes an upper tank body (11) and a lower tank body (13), which are sealed together by a first telescopic section (12), and the first water outlet pipe (15) is installed on the upper tank body (11). The outer wall of the lower tank (13) is provided with a first telescopic component (9) for supporting the upper tank (11) and adjusting the height of the upper tank (11); at least two of the first telescopic components (9) are symmetrically arranged along the circumference of the outer wall of the lower tank (13). The filter assembly is connected to the settling tank (1) and is used to filter the supernatant that has settled and been degreased by the settling tank (1); It also includes a control unit, which includes: A liquid level sensor is used to collect the liquid level of the tailwater in the settling tank (1); The controller is used to control the extension and retraction of the first telescopic component (9) and to control the opening or closing of the first valve; The recycling assembly includes a recycling pipe (2) and a suction pump; the recycling pipe (2) includes a straight pipe section (21); a filter structure (23) is provided at one end of the channel formed after the straight pipe section (21) is inserted into the road core sample; a vibrating head (6) is provided on the outside of the filter structure (23); the vibrating head (6) includes a sliding member (61) and a support plate (62); the sliding member (61) is slidably connected to the outer wall of the straight pipe section (21); the support plate (62) is provided on the bottom outside of the filter structure (23); Multiple connecting rods (63) are provided between the sliding member (61) and the support plate (62). The connecting rods (63) extend and retract through the vertical displacement of the sliding member (61). The multiple connecting rods (63) are located on the outside of the filter structure (23). A filter screen (64) is provided between two adjacent connecting rods (63). The sliding member (61) achieves vertical displacement through the second telescopic member.

2. The tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, The liquid collection pipe (3) is a ring pipe and is located outside the settling tank (1); one end of the first outlet pipe (15) is connected to the settling tank (1) and the other end is connected to the liquid collection pipe (3). The height of the liquid collection pipe (3) is lower than the end of the first outlet pipe (15) connected to the settling tank (1).

3. A tailwater treatment device based on a road core sampling system according to claim 2, characterized in that, The liquid collection pipe (3) is inclined, and one end of the bypass pipe (4) is connected to the side wall or bottom of the lowest end of the liquid collection pipe (3).

4. The tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, The settling tank (1) is provided with an inlet pipe for replenishing water into the settling tank (1) so that the tailwater level in the settling tank (1) is positioned at the inlet of the first outlet pipe (15). An inlet valve is provided on the inlet pipe.

5. A tailwater treatment device based on a road core sampling system according to claim 4, characterized in that, The controller is communicatively connected to the liquid level sensor, the water inlet valve, the first valve and the first telescopic component (9). The controller is used to control the opening or closing of the water inlet valve and the first valve according to the liquid level signal collected by the liquid level sensor.

6. A tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, The bottom of the filter structure (23) is provided with a plurality of first through holes, and / or the support plate (62) is provided with a plurality of second through holes.

7. A tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, An annular connecting plate (66) is provided on the outside of the straight pipe section (21) above the sliding member (61). The annular connecting plate (66) and the sliding member (61) are connected by a connecting rod (65), and the annular connecting plate (66) is connected to the telescopic end of the second telescopic member.

8. A tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, A second telescopic section (22) is provided on the straight pipe section (21) at a position corresponding to the height of the settling tank (1).

9. A tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, The outer wall of the straight pipe section (21) is provided with a protrusion arranged along its axial direction, and the inner wall of the sliding member (61) is provided with a groove that cooperates with the protrusion.

10. A tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, Multiple first outlet pipes (15) are evenly arranged around the circumference of the settling tank (1), and one end of the side pipe (4) is located in the central axis of the settling tank (1).

11. A tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, The oil-absorbing assembly (5) includes a housing, the two ends of which are detachably connected to the side pipe (4), and the housing is filled with oil-absorbing filler; the oil-absorbing assembly (5) is arranged vertically.

12. A tailwater treatment device based on a road core sampling system according to claim 1, characterized in that, The filtration assembly includes a coarse filtration assembly (7) and a fine filtration assembly (8); The coarse filter assembly (7) is connected to the drain pipe (17) at the bottom of the settling tank (1) and is used to filter the tailwater containing mud and sand at the bottom of the settling tank (1). The fine filtration component (8) is connected to the second outlet pipe (16) on the side wall of the settling tank (1) and to the coarse filtration component (7) for filtering the filtrate of the coarse filtration component (7) and the supernatant after the settling tank (1) has been degreased.

13. A treatment method based on the wastewater treatment apparatus according to any one of claims 1-12, characterized in that, Includes the following steps: S1. The wastewater generated after road core sampling is pumped into the settling tank (1) using the recycling component for settling; S2. After settling, the height of the liquid level in the settling tank (1) relative to the inlet of the first outlet pipe (15) is adjusted so that the height of the liquid level in the settling tank (1) corresponds to the inlet of the first outlet pipe (15). S3. Open the first valve and the circulation pump to allow the tailwater containing oil in the settling tank (1) to circulate and remove oil in the circulation loop formed by the bypass pipe (4) and the settling tank (1) until there is no oil on the liquid surface in the settling tank (1), then close the first valve and the circulation pump. S4. Discharge the supernatant in the settling tank (1) to the filter assembly for filtration. S5. Discharge the solid impurities deposited at the bottom of the settling tank (1).

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