Wastewater treatment device and method based on oil well cement fluid loss agent production

Abstract

The invention discloses a wastewater treatment device and method based on oil well cement fluid loss agent production, and relates to the technical field of wastewater treatment. A plurality of chemical agent uniform distribution mechanisms are arranged in the chemical agent applying mechanism, and when a flocculating agent is applied, the flocculating agent can be sprayed out at a high speed through nozzles I and nozzles II of a plurality of flocculating agent spraying arm assemblies, so that the flocculating agent spraying arm assemblies are converted into a horizontal state from a vertical state under the pushing of counter-acting force; the purpose of widening the spraying range of the flocculating agent is achieved, and the purpose of simultaneously applying the wastewater treatment agent on a large area can be achieved by arranging a small number of agent uniform distribution mechanisms; when the flocculating agent is sprayed out, counter-acting force can provide thrust for the flocculating agent spraying arm assembly, the flocculating agent spraying arm assembly can disturb surrounding waste water in the rotating process, the effect of stirring and mixing the waste water and the flocculating agent is achieved, and stirring operation can be completed while the flocculating agent is sprayed without independently arranging a stirring device in the process.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment device and method based on the production of oil well cement fluid loss reducer. Background Art

[0002] Oil well cement fluid loss reducer is a material that can control the loss of liquid phase in cement slurry to permeable formations, thereby maintaining the cement slurry with an appropriate water-cement ratio. In the production process of oil well cement fluid loss reducer, a large amount of wastewater will be generated during the pretreatment of raw materials, washing and flushing after polymerization reaction, and cleaning of equipment. The wastewater contains unreacted raw materials, reaction by-products and other possible harmful substances, and the wastewater needs to be purified before it can be discharged.

[0003] In the wastewater treatment process, the addition of flocculants and iron salt dephosphorizers is a key step. They are used to promote the coagulation and sedimentation of suspended matter and adjust the phosphorus content of wastewater, thereby optimizing the subsequent treatment effect.

[0004] The integrated wastewater treatment equipment disclosed in the patent application with reference publication (announcement) number CN108658306A adopts an integrated design, has a compact layout, simple method, small footprint, is easy to transport and manage, and greatly reduces equipment investment. The PLC control cabinet and the dosing metering pump achieve accurate metering of wastewater and drug flow. By inputting the adjustment parameters of the metering pump, the PLC can calculate and display the real-time dosage online on the control screen, ensuring a good treatment effect while controlling the cost of the drug and avoiding secondary pollution. The chemical treatment technology and physical adsorption technology of wastewater are combined to achieve deep purification of wastewater, improve the treatment effect of wastewater, and ensure the quality of effluent water.

[0005] A comprehensive analysis of the above patents reveals the following defects:

[0006] The traditional addition method is often to directly inject chemical treatment agents into the wastewater regulating tank at a single point or a few points. This method is very likely to cause the local concentration of the agent in the regulating tank to be too high, while the concentration in other areas is insufficient, and it is impossible to achieve uniform distribution of the chemical agent in the entire treatment tank. This not only affects the effective contact and reaction between the agent and the pollutants in the wastewater, but also easily leads to large differences in local treatment effects, affecting the overall treatment efficiency and water quality compliance rate;

[0007] Since the chemical agents are not evenly dispersed, they are not in sufficient contact with the target substances in the wastewater, the reaction rate is limited, the treatment time is extended, and the energy consumption is increased. In the long-term operation process, the operating cost is increased due to the increased energy consumption and the waste of agents. At the same time, the insufficient reaction leads to the residue of agents, which poses a potential threat to the environment.

[0008] In order to solve the problems of uneven distribution of reagents and insufficient reaction, stirring equipment is often used in the prior art to enhance the mixing effect. However, the introduction of stirring equipment not only increases the complexity and maintenance cost of the equipment, but also easily leads to an increase in energy consumption. In addition, the stirring process may also cause the sludge to be re-suspended, which has an adverse effect on the subsequent treatment steps.

[0009] Therefore, the present invention proposes a wastewater treatment device and method based on the production of oil well cement fluid loss reducer to solve the above problems. Summary of the invention

[0010] In view of the deficiencies in the prior art, the present invention provides a wastewater treatment device and method based on the production of oil well cement fluid loss reducer, which solves the problem that the current method of adding wastewater treatment agents is to directly inject them into the wastewater regulating tank at a single point or a few points. This method is very likely to cause the local concentration of the wastewater treatment agent in the regulating tank to be too high, while the concentration in other areas is insufficient, and it is impossible to achieve uniform distribution of the wastewater treatment agent in the entire treatment tank, which not only affects the effective contact and reaction between the agent and the pollutants in the wastewater, but also easily leads to large differences in local treatment effects, affecting the overall treatment rate of the wastewater. After the reaction rate is limited, not only the treatment time is extended and the energy consumption is increased, but the insufficient reaction is also likely to cause agent residues, posing a potential threat to the environment.

[0011] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wastewater treatment device based on the production of oil well cement fluid loss reducer, including a wastewater treatment tank and a regulating tank, and also including:

[0012] A chemical agent application mechanism is arranged inside the regulating tank and is used to input a preset amount of iron salt dephosphorization agent and flocculant into the wastewater and fully mix the iron salt dephosphorization agent, flocculant and wastewater;

[0013] The chemical agent application mechanism includes an iron salt dephosphorization agent input pipe and a flocculant input pipe which are vertically arranged from top to bottom. A plurality of drainage ports are evenly arranged on the opposite side walls of the iron salt dephosphorization agent input pipe and the flocculant input pipe. A chemical agent uniform distribution mechanism for spraying the iron salt dephosphorization agent and the flocculant is commonly arranged in the two drainage ports at relative positions. The chemical agent uniform distribution mechanism automatically expands the spraying range of the iron salt dephosphorization agent and the flocculant while spraying the iron salt dephosphorization agent and the flocculant, and completes the stirring and mixing of the wastewater and the iron salt dephosphorization agent and the flocculant.

[0014] Furthermore, it also includes:

[0015] Anaerobic tank, which hydrolyzes and acidifies organic matter through the action of anaerobic bacteria, creating conditions for subsequent aerobic treatment;

[0016] Aerobic tanks, which use aerobic microorganisms to digest and degrade organic matter in wastewater under aerobic conditions;

[0017] Sludge sedimentation tank, which uses gravity to settle suspended solid particles in wastewater to the bottom of the tank, completes solid-liquid separation, and further purifies the water quality;

[0018] The clear water tank further filters and processes the water after solid-liquid separation through a membrane bioreactor to form clean water that meets the discharge standards.

[0019] Furthermore, the agent uniform distribution mechanism includes a plurality of flocculant uniform distribution components for spraying flocculants which are vertically and detachably arranged on the top of the flocculant input pipe, and an iron salt dephosphorization agent uniform distribution component for spraying the iron salt dephosphorization agent can be detachably arranged at the bottom of the iron salt dephosphorization agent input pipe and at a position relative to each flocculant uniform distribution component.

[0020] Furthermore, the flocculant uniform distribution component includes a threaded tube detachably arranged in the top discharge port of the flocculant input pipe, and an output tube is sealed and rotatably arranged on the top of the threaded tube. Drive blocks are fixedly arranged on both sides of the top of the output tube for driving the iron salt dephosphorization agent uniform distribution component to complete the operation of spraying the iron salt dephosphorization agent. A plurality of storage grooves are evenly arranged on the side wall of the output tube, and a flocculant spray arm assembly for increasing the flocculant spraying range is movably arranged inside each of the storage grooves. Avoidance grooves are arranged on both sides of the inner wall of the storage groove, and a wedge block is fixedly arranged on the inner wall of one of the avoidance grooves, and a plurality of unblocking steel needles are fixedly arranged on the side of the inner wall of the storage groove close to the other avoidance groove, and the wedge block and the unblocking steel needles are used to cooperate to complete the anti-blocking and cleaning operation of the flocculant spray arm assembly.

[0021] Furthermore, the flocculant spray arm assembly includes a liquid medicine delivery pipe 1 which is rotatably arranged inside the storage tank through a rotating shaft, and a spoiler for disturbing wastewater, flocculant and iron salt dephosphorization agent is fixedly arranged on the top of the liquid medicine delivery pipe 1, and a plurality of nozzles 1 connected to the interior thereof are evenly fixedly arranged on the bottom of the liquid medicine delivery pipe 1, and a plurality of nozzles 2 are also evenly fixedly arranged on the side wall of the liquid medicine delivery pipe 1, and both nozzles 1 and 2 are used to spray the flocculant in the liquid medicine delivery pipe 1 into the regulating tank, and each of the nozzles 2 is provided with a dredging component for removing foreign matter therein.

[0022] Furthermore, the unclogging component includes a mounting bracket fixedly mounted on the inner wall of a liquid medicine delivery tube and a unclogging steel needle slidably passing through the mounting bracket, the liquid medicine delivery tube and one of the nozzles 2; a spring limiting ring is provided on the outer wall of the unclogging steel needle 1 and located in an internal fixed sleeve of the mounting bracket; a spring is provided on the outer wall of the unclogging steel needle 1 and located in a sliding sleeve between the mounting bracket and the spring limiting ring; when the end of the unclogging steel needle 1 away from the nozzle 2 is not subject to external force, the unclogging steel needle 1 is located outside the nozzle 2, and the flocculant can be output through the nozzle 2.

[0023] Furthermore, the iron salt dephosphorus agent uniform distribution component includes a liquid distribution cylinder that is detachably arranged in the liquid discharge port at the bottom of the iron salt dephosphorus agent input pipe, and a plurality of liquid delivery pipes 2 are evenly and fixedly arranged at the bottom of the liquid distribution cylinder, which are used to disperse and output the iron salt dephosphorus agent inside the liquid distribution cylinder, and a plurality of nozzles 3 are fixedly arranged at the bottom of each of the liquid delivery pipes 2, and a plurality of spray holes are evenly opened on the outer wall of the nozzle 3, and a cleaning component is arranged at the bottom of the liquid distribution cylinder, which is used to clean the outer wall of the nozzle 3.

[0024] Furthermore, the cleaning component includes a cylinder fixedly arranged at the bottom of the liquid distributing cylinder and a piston slidably arranged inside the cylinder, a spring 2 is arranged inside the cylinder and above the piston, a lifting rod is fixedly arranged at the bottom of the piston, the lifting rod slides through the cylinder and is fixedly arranged with a cross plate, spherical protrusions are fixedly arranged on both sides of the bottom of the cross plate, a plurality of support arms corresponding to the position of the second liquid medicine delivery pipe are fixedly arranged on the outer wall of the lifting rod and located outside the cylinder, a scraper is fixedly arranged at one end of each of the support arms, and through holes matching the outer diameter of the third nozzle are evenly opened on the top of the scraper, each through hole is slidably sleeved on the outer wall of the third nozzle at the corresponding position, and when the cleaning component is not subjected to external force, the through hole completely seals the spray hole on the outer wall of the third nozzle at the corresponding position.

[0025] The present invention also discloses a wastewater treatment method based on the production of oil well cement fluid loss reducer, and a wastewater treatment device based on the production of oil well cement fluid loss reducer. The method comprises the following steps:

[0026] Step 1, the wastewater is discharged into the regulating tank, and since the chemical agent application mechanism is connected to the external flocculant supply equipment and the iron salt dephosphorization agent supply equipment, a preset amount of flocculant and iron salt dephosphorization agent is sprayed into the regulating tank through the chemical agent application mechanism;

[0027] Step 2: Using a water pump, the wastewater after preliminary treatment in the regulating tank is input into the anaerobic tank to hydrolyze and acidify the organic matter and remove the organic matter in the wastewater;

[0028] Step 3: The wastewater treated in the anaerobic tank flows into the aerobic tank to quickly decompose the organic matter;

[0029] Step 4: The wastewater flowing into the sludge sedimentation tank gradually settles the suspended solids under the action of gravity, and the sediment is re-input into the anaerobic tank for further treatment through the sludge pump;

[0030] Step 5: Use a water pump to pump the supernatant above the sludge sedimentation tank into the clean water tank to form clean water that meets the discharge standards and discharge it through the clean water outlet.

[0031] The present invention provides a wastewater treatment device and method based on the production of oil well cement fluid loss reducer. Compared with the prior art, it has the following beneficial effects:

[0032] 1. A wastewater treatment device and method based on the production of oil well cement fluid loss reducer can simultaneously input flocculants and iron salt dephosphorizers into the regulating tank by setting a chemical agent application mechanism, so as to adjust the phosphorus content of the wastewater and perform preliminary flocculation treatment on the wastewater, thereby facilitating the purification of the wastewater in subsequent treatment units; secondly, a plurality of agent uniform distribution mechanisms are arranged in the chemical agent application mechanism, and when the flocculant is applied, the flocculant can be sprayed out at high speed through the nozzles 1 and 2 of the plurality of flocculant spray arm assemblies, so that the flocculant spray arm assemblies can be transformed from a vertical state to a horizontal state under the push of the reaction force, thereby increasing the spray radius of the flocculant, and achieving the purpose of expanding the scope of application. The purpose of wide flocculant spraying range is to set up a smaller number of agent distribution mechanisms to meet the purpose of simultaneously applying wastewater treatment agents over a larger area, saving the purpose of multiple agent nozzles and reducing expenditure costs; furthermore, the reaction force when the flocculant is sprayed can provide thrust for the flocculant spray arm assembly, thereby achieving the effect of the output pipe rotating around the top of the threaded pipe. The flocculant spray arm assembly can disturb the surrounding wastewater during the rotation process, thereby achieving the effect of stirring and mixing the wastewater and flocculant. This process does not require a separate stirring device to complete the stirring operation while spraying the flocculant. Not only is the structure simple, but the cost of setting up the stirring device is also reduced.

[0033] 2. A wastewater treatment device and method based on the production of oil well cement fluid loss reducer can drive the two driving blocks on the top of the output pipe to push the spherical protrusions to move upward intermittently while rotating, thereby achieving the effect of pushing the cleaning component upward as a whole; secondly, the scraper moves up along the three surfaces of the nozzle, so that the spray holes on the three surfaces of the nozzle are exposed, and the iron salt dephosphorization agent can be sprayed, thereby achieving the purpose of automatically controlling the release of the iron salt dephosphorization agent while releasing the flocculant, and when the scraper moves back and forth up and down, the inner wall of the through hole can scrape off the impurities attached to the three surfaces of the nozzle, thereby achieving the purpose of automatically cleaning the nozzle.

[0034] 3. A wastewater treatment device and method based on the production of oil well cement fluid loss reducer, by arranging a dredging component in the flocculant spray arm assembly, when the liquid medicine delivery pipe 1 is changed from a horizontal state to a vertical state, the dredging steel needle 1 is pushed by the wedge plate and enters the nozzle 2 at the corresponding position, so that the impurities remaining in the nozzle 3 can be pushed out, and the purpose of automatically cleaning the nozzle 2 can be achieved; secondly, the dredging steel needle is located in the idle nozzle 3, which can prevent foreign matter from entering its interior, thereby ensuring that the nozzle 2 can be used normally in the next operation; furthermore, when the liquid medicine delivery pipe 1 is changed from a horizontal state to a vertical state, the dredging steel needle 2 can automatically enter the interior of the nozzle 1, and at the same time of cleaning the nozzle 1, the nozzle 1 can be blocked, and the nozzle 1 can be effectively prevented from blocking and protecting. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the chemical agent application mechanism of the present invention;

[0038] Figure 4 This is a structural schematic diagram of the flocculant input pipe and the flocculant uniform distribution component of the present invention in an assembled state;

[0039] Figure 5 It is a structural schematic diagram of the assembly state of the iron salt dephosphorization agent input pipe and the iron salt dephosphorization agent uniform distribution component of the present invention;

[0040] Figure 6 It is a schematic diagram of the structure of the medicine uniform distribution mechanism of the present invention;

[0041] Figure 7 This is a schematic diagram of the structure of the flocculant uniform distribution component of the present invention in an expanded state;

[0042] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure of part A;

[0043] Fig. 9 This is a schematic diagram of the structure of the flocculant uniform distribution component of the present invention in the storage state;

[0044] Fig.10 For the present invention Fig. 9 A schematic diagram of the enlarged structure of part B in FIG.

[0045] Fig.11 This is a schematic diagram of the overall structure of the coagulant spray arm assembly of the present invention;

[0046] Fig.12This is a schematic diagram of the internal structure of the coagulant spray arm assembly of the present invention;

[0047] Fig.13 For the present invention Fig.12 A schematic diagram of the enlarged structure of part C in FIG.

[0048] Fig.14 This is a schematic diagram of the structure of the evenly distributed component of the iron salt dephosphorization agent of the present invention in a decomposed state;

[0049] Fig.15 This is a schematic cross-sectional view of the cleaning component of the present invention;

[0050] Fig.16 For the present invention Fig.15 The D part in the figure is an enlarged schematic diagram of the structure.

[0051] In the figure: 1. Wastewater treatment tank; 2. Wastewater inlet; 3. Clean water outlet; 4. Regulating tank; 5. Anaerobic tank; 6. Aerobic tank; 7. Sludge sedimentation tank; 8. Clear water tank; 9. Chemical agent application mechanism; 91. Iron salt dephosphorization agent input pipe; 92. Flocculant input pipe; 93. Agent uniform distribution mechanism; 931. Flocculant uniform distribution assembly; 9311. Output pipe; 9312. Driving block; 9313. Storage tank; 9314. Avoidance tank; 9315. Flocculant spray arm assembly; 93151. Liquid delivery pipe 1; 93152. Spoiler; 93153. Nozzle 1; 93154. Nozzle 2; 9315 5. Mounting frame; 93156. One unblocking steel needle; 93157. Spring limit ring; 93158. One spring; 9316. Wedge block; 9317. Two unblocking steel needles; 9318. Threaded pipe; 932. Iron salt dephosphorization agent uniform distribution component; 9321. Liquid distribution cylinder; 9322. Two liquid medicine delivery pipes; 9323. Three nozzles; 9324. Cleaning component; 93241. Cylinder; 93242. Piston; 93243. Two springs; 93244. Lifting rod; 93245. Horizontal plate; 93246. Spherical bump; 93247. Support arm; 93248. Scraper; 93249. Through hole. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] like Figures 1 to 16 The present invention provides three technical solutions: a wastewater treatment device based on the production of oil well cement fluid loss reducer, specifically including the following embodiments:

[0054] Embodiment 1: A wastewater treatment device based on the production of oil well cement fluid loss reducer, comprising:

[0055] A wastewater treatment box 1 is provided with a wastewater inlet 2 at one end thereof, and a clean water outlet 3 for outputting clean water is provided on a side wall of the wastewater treatment box 1 away from the wastewater inlet 2;

[0056] A regulating tank 4, which is used to regulate the amount of water entering the subsequent treatment unit, and simultaneously purify phosphorus in the wastewater and perform preliminary wastewater flocculation treatment;

[0057] A chemical agent application mechanism 9 is arranged inside the regulating tank 4 and is used to input a preset amount of iron salt dephosphorization agent and flocculant into the wastewater and fully mix the iron salt dephosphorization agent, flocculant and wastewater;

[0058] The chemical agent application mechanism 9 includes an iron salt dephosphorization agent input pipe 91 and a flocculant input pipe 92 vertically arranged from top to bottom, and multiple drainage ports are evenly arranged on the opposite side walls of the iron salt dephosphorization agent input pipe 91 and the flocculant input pipe 92. A chemical agent uniform distribution mechanism 93 for spraying the iron salt dephosphorization agent and the flocculant is commonly arranged in the two drainage ports at the relative position. The chemical agent uniform distribution mechanism 93 automatically expands the spraying range of the iron salt dephosphorization agent and the flocculant while spraying the iron salt dephosphorization agent and the flocculant, and completes the mixing and mixing of the wastewater, the iron salt dephosphorization agent and the flocculant. One end of the iron salt dephosphorization agent input pipe 91 and the flocculant input pipe 92 penetrates the wastewater treatment box 1 and extends to the outside, and is respectively connected to the iron salt dephosphorization agent supply device and the flocculant supply device.

[0059] The wastewater treatment device also includes:

[0060] The anaerobic tank 5 hydrolyzes and acidifies organic matter through the action of anaerobic bacteria, creating conditions for subsequent aerobic treatment; the anaerobic tank is provided with fillers, and anaerobic microorganisms adhere to the fillers to form a biofilm, and by setting up an anaerobic or low-oxygen environment, anaerobic microorganisms are promoted to decompose some organic matter.

[0061] The aerobic tank 6 utilizes aerobic microorganisms to digest and degrade organic matter in the wastewater under aerobic conditions. The aerobic tank is provided with fillers, and the aerobic microorganisms adhere to the fillers to form a biofilm. Sufficient oxygen is provided to the aerobic tank 6 through an external fan to promote the reproduction of aerobic microorganisms and the rapid decomposition of organic matter.

[0062] Sludge sedimentation tank 7, which uses gravity to settle suspended solid particles in the wastewater to the bottom of the tank, completes solid-liquid separation, and further purifies the water quality;

[0063] The clean water tank 8 further filters and processes the water after solid-liquid separation through a membrane bioreactor to form clean water that meets the discharge standards.

[0064] Embodiment 2: The main difference between this embodiment and the first technical solution is that the agent uniform distribution mechanism 93 includes a plurality of flocculant uniform distribution components 931 for spraying flocculants, which are vertically and detachably arranged on the top of the flocculant input pipe 92, and an iron salt dephosphorization agent uniform distribution component 932 for spraying the iron salt dephosphorization agent is detachably arranged at the bottom of the iron salt dephosphorization agent input pipe 91 and at a position relative to each flocculant uniform distribution component 931. The flocculant uniform distribution component 931 includes a threaded tube 9318 detachably arranged in the top discharge port of the flocculant input pipe 92, and an output pipe 9311 is rotatably and sealingly arranged at the top of the threaded tube 9318, and driving blocks 9312 are fixedly arranged on both sides of the top of the output pipe 9311 for driving the iron salt dephosphorization agent uniform distribution component 932 to complete the operation of spraying the iron salt dephosphorization agent, and a plurality of storage grooves 9313 are evenly arranged on the side wall of the output pipe 9311, and each storage groove 9313 is movably arranged inside. A flocculant spray arm assembly 9315 is provided for increasing the flocculant spraying range. Avoidance grooves 9314 are provided on both sides of the inner wall of a receiving groove 9313. A wedge block 9316 is fixedly provided on the inner wall of one of the avoidance grooves 9314. A plurality of unblocking steel needles 9317 are fixedly provided on the inner wall of the receiving groove 9313 near the other avoidance groove 9314. The wedge block 9316 and the unblocking steel needles 9317 are both used to cooperate in completing the anti-blocking and cleaning operation of the flocculant spray arm assembly 9315. One end of the flocculant spray arm assembly 9315 is connected to the inside of the output pipe 9311 through a hose, and the flocculant spray arm assembly 9315 can only rotate within a range of ninety degrees in the storage groove 9313, that is, the flocculant spray arm assembly 9315 can only rotate ninety degrees from a vertical state to a horizontal state, that is, forming a vertical state with the output pipe 9311; the positions of the two driving blocks 9312 and the two spherical bumps 93246 are correspondingly arranged, and the two driving blocks 9312 are used to simultaneously push the two spherical bumps 93246 to move upward. The flocculant spraying arm assembly 9315 includes a liquid medicine delivery pipe 93151 which is rotatably arranged inside a storage tank 9313 via a rotating shaft, a spoiler 93152 for disturbing wastewater, flocculant and iron salt dephosphorization agent is fixedly arranged on the top of the liquid medicine delivery pipe 93151, a plurality of nozzles 93153 which are connected to the interior of the liquid medicine delivery pipe 93151 are evenly fixedly arranged on the bottom of the liquid medicine delivery pipe 93151, and a plurality of nozzles 93154 are evenly fixedly arranged on the side wall of the liquid medicine delivery pipe 93151, the nozzles 1 93153 and 93154 are both used for spraying the flocculant in the liquid medicine delivery pipe 93151 into the regulating tank 4, and a dredging assembly for removing foreign matter inside each nozzle 93154 is arranged inside.A counterweight block is fixedly provided at one end of the nozzle 93153 near the nozzle 93153, so that it can be stored in the storage groove 9313 under the action of its own gravity when no flocculant or iron salt dephosphorization agent is sprayed, and the overall gravity of the flocculant spraying arm assembly 9315 can push the dredging steel needle 93156 to overcome the elastic force of the spring 93158 and slide along the inclined surface of the wedge block 9316. The dredging component includes a mounting frame 93155 fixedly arranged on the inner wall of the liquid medicine delivery tube 93151 and a dredging steel needle 93156 slidingly passing through the mounting frame 93155, the liquid medicine delivery tube 93151 and one of the nozzles 2 93154; a spring limiting ring 93157 is provided on the outer wall of the dredging steel needle 93156 and located in the inner fixed sleeve of the mounting frame 93155; a spring 93158 is provided on the outer wall of the dredging steel needle 93156 and located in the sliding sleeve between the mounting frame 93155 and the spring limiting ring 93157; when the end of the dredging steel needle 93156 away from the nozzle 2 93154 is not subjected to external force, the dredging steel needle 93156 is located outside the nozzle 2 93154, and the flocculant can be output through the nozzle 2 93154.

[0065] Embodiment 3: The main difference between this embodiment and the second technical solution is that: the iron salt dephosphorization agent uniform distribution component 932 includes a liquid distribution cylinder 9321 that is detachably arranged in the liquid discharge port at the bottom of the iron salt dephosphorization agent input pipe 91, and a plurality of liquid delivery pipes 9322 are evenly and fixedly arranged at the bottom of the liquid distribution cylinder 9321, which are used to disperse and output the iron salt dephosphorization agent inside the liquid distribution cylinder 9321, and a plurality of nozzles 9323 are fixedly arranged at the bottom of each liquid delivery pipe 9322, and a plurality of spray holes are evenly opened on the outer wall of the nozzle 9323, and a cleaning component 9324 is arranged at the bottom of the liquid distribution cylinder 9321, which is used to clean the outer wall of the nozzle 9323. The iron salt dephosphorization agent flows into the liquid distribution cylinder 9321 through the iron salt dephosphorization agent input pipe 91, and is dispersed into the plurality of liquid delivery pipes 9322 through the liquid distribution cylinder 9321, and then the iron salt dephosphorization agent is sprayed out through the spray holes on the outer wall of the nozzle 9323. The cleaning assembly 9324 includes a cylinder 93241 fixedly arranged at the bottom of the liquid dispensing cylinder 9321 and a piston 93242 slidably arranged inside the cylinder 93241. A spring 93243 is arranged inside the cylinder 93241 and above the piston 93242. A lifting rod 93244 is fixedly arranged at the bottom of the piston 93242. The lifting rod 93244 slides through the cylinder 93241 and is fixedly arranged with a cross plate 93245. Spherical bumps 93246 are fixedly arranged on both sides of the bottom of the cross plate 93245. The outer wall of the lifting rod 93244 is A plurality of support arms 93247 corresponding to the positions of the second medicine delivery pipe 9322 are fixedly provided on the outside of the cylinder 93241, and a scraper 93248 is fixedly provided on one end of each support arm 93247. Through holes 93249 matching the outer diameter of the nozzle three 9323 are evenly opened on the top of the scraper 93248. Each through hole 93249 is slidably sleeved on the outer wall of the nozzle three 9323 at the corresponding position. When the cleaning component 9324 is not affected by external force, the through hole 93249 completely seals the spray hole on the outer wall of the nozzle three 9323 at the corresponding position.

[0066] The embodiment of the present invention also provides a method for treating wastewater based on the production of oil well cement fluid loss reducer, which is used in a wastewater treatment device based on the production of oil well cement fluid loss reducer. The method comprises the following steps:

[0067] Step 1, the wastewater after preliminary treatment in the grid tank is discharged into the regulating tank 4. Since the chemical agent application mechanism 9 is connected to the external flocculant supply equipment and the iron salt dephosphorization agent supply equipment, a preset amount of flocculant and iron salt dephosphorization agent is sprayed into the regulating tank 4 through the chemical agent application mechanism 9, and the wastewater, flocculant and iron salt dephosphorization agent are mixed, the phosphorus content of the wastewater is adjusted, and some impurities in the wastewater are flocculated at the same time, which is convenient for subsequent wastewater treatment; the specific process is: the external flocculant supply equipment inputs a preset amount of flocculant into the flocculant input pipe 92, since the top of the outer wall of the flocculant input pipe 92 is evenly provided with a plurality of drainage ports, and a plurality of flocculant uniform distribution components 931 are correspondingly installed in one of the drainage ports in turn, therefore, the flocculant is input into the flocculant uniform distribution component 931 at the corresponding position through the drainage ports at a plurality of positions;

[0068] The flocculant flows into the output pipe 9311 through the discharge port, and flows into the multiple flocculant spray arm assemblies 9315 in sequence through the hose connected between the flocculant spray arm assembly 9315 and the output pipe 9311. When the flocculant is sprayed from the nozzle 93153 located at the bottom of the flocculant spray arm assembly 9315, under the reaction force of the flocculant, the liquid medicine delivery pipe 93151 rotates around the rotating shaft and gradually changes from the initial vertical state to the horizontal state; after the liquid medicine delivery pipe 93151 is completely separated from the storage groove 9313, the dredging steel needle 93156 loses the wedge block 9316 The dredging steel needle 1 93156 moves away from the nozzle 2 93154 under the pushing effect of the spring 1 93158, so that the dredging steel needle 1 93156 is separated from the nozzle 2 93154, and the flocculant is sprayed out through the nozzle 2 93154 through the exposed outlet; because a plurality of nozzles 2 93154 are arranged on the side of the liquid medicine delivery pipe 1 93151, the thrust generated when the flocculant is sprayed out from the nozzle 2 93154 pushes the liquid medicine delivery pipe 1 93151 to rotate, so that the output pipe 9311 rotates rapidly at the top of the threaded pipe 9318;

[0069] When the output pipe 9311 rotates, the two driving blocks 9312 rotate synchronously and rapidly. The two driving blocks 9312 continuously push the two spherical bumps 93246 at the corresponding positions. The spherical bumps 93246 drive the lifting rod 93244 to move upward synchronously. When the scraper 93248 moves upward, the nozzle three 9323 is exposed from the through hole 93249, and the iron salt dephosphorization agent can be sprayed out from the spray hole. Since the driving block 9312 and the spherical bump 93246 constantly meet intermittently, when the spherical bump 93246 is not affected by external force, the elastic force of the spring two 93243 pushes the piston 93242 to move down and reset, and the through hole 93249 blocks and seals the spray hole on the surface of the nozzle three 9323 again, and the iron salt dephosphorization agent cannot be sprayed out. During the reciprocating movement of the cleaning component 9324 up and down, the through hole 93249 scrapes off the sludge and other impurities attached to the outer wall of the nozzle three 9323.

[0070] After the wastewater treatment is completed, flocculant and iron salt dephosphorization agent are no longer sprayed, and the liquid delivery pipe 93151 gradually moves into the receiving groove 9313 under the action of its own gravity and the gravity of the counterweight block set at its end. When the dredging steel needle 93156 enters the receiving groove 9313, the dredging steel needle 93156 contacts the inclined surface of the wedge block 9316, and moves toward the direction of the nozzle 2 93154 under the push of the inclined surface, and finally enters the nozzle 2 93154. At this time, the spring 1 93158 is compressed and elastically deformed, and multiple dredging steel needles 2 9317 are inserted into the nozzle 1 93153 at the corresponding positions in turn to dredge the nozzle 1 93153.

[0071] Step 2: The wastewater after preliminary treatment in the regulating tank 4 is input into the anaerobic tank 5 by means of a water pump. The anaerobic tank 5 is set to an oxygen-free or low-oxygen environment, and fillers are arranged inside the anaerobic tank. Anaerobic microorganisms attach to the fillers to form a biofilm, which promotes the anaerobic microorganisms to decompose some organic matter. The organic matter is hydrolyzed and acidified by the action of anaerobic bacteria, and the organic matter in the wastewater is removed;

[0072] Step 3, the wastewater treated in the anaerobic tank 5 flows into the aerobic tank 6, a filler is provided in the aerobic tank 6, aerobic microorganisms attach to the filler to form a biofilm, and an aeration device is used to provide sufficient oxygen to the aerobic tank 6. The aerobic microorganisms reproduce rapidly in an aerobic environment and simultaneously rapidly decompose organic matter;

[0073] Step 4: The wastewater flowing into the sludge sedimentation tank 7 gradually settles the suspended matter under the action of gravity, and the impurities settled at the bottom of the sludge sedimentation tank 7 form sludge, and the precipitate is re-input into the anaerobic tank 5 for further treatment through the sludge pump;

[0074] Step 5: Use a water pump to pump the supernatant above the sludge sedimentation tank 7 into the clean water tank 8. The water after solid-liquid separation is further filtered and processed by the membrane bioreactor to form clean water that meets the discharge standards and is discharged through the clean water outlet 3.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device based on the production of oil well cement fluid loss reducer, including a wastewater treatment tank and a regulating tank, characterized in that: Also includes: A chemical agent application mechanism is arranged inside the regulating tank and is used to input a preset amount of iron salt dephosphorization agent and flocculant into the wastewater and fully mix the iron salt dephosphorization agent, flocculant and wastewater; The chemical agent application mechanism includes an iron salt dephosphorization agent input pipe and a flocculant input pipe which are vertically arranged from top to bottom. A plurality of drainage ports are evenly arranged on the opposite side walls of the iron salt dephosphorization agent input pipe and the flocculant input pipe. A chemical agent uniform distribution mechanism for spraying the iron salt dephosphorization agent and the flocculant is commonly arranged in the two drainage ports at relative positions. The chemical agent uniform distribution mechanism automatically expands the spraying range of the iron salt dephosphorization agent and the flocculant while spraying the iron salt dephosphorization agent and the flocculant, and completes the stirring and mixing of the wastewater and the iron salt dephosphorization agent and the flocculant.

2. The wastewater treatment device based on the production of oil well cement fluid loss reducer according to claim 1, characterized in that: Also includes: Anaerobic tank, which hydrolyzes and acidifies organic matter through the action of anaerobic bacteria, creating conditions for subsequent aerobic treatment; Aerobic tanks, which use aerobic microorganisms to digest and degrade organic matter in wastewater under aerobic conditions; Sludge sedimentation tank, which uses gravity to settle suspended solid particles in wastewater to the bottom of the tank, completes solid-liquid separation, and further purifies the water quality; The clear water tank further filters and processes the water after solid-liquid separation through a membrane bioreactor to form clean water that meets the discharge standards.

3. The wastewater treatment device based on the production of oil well cement fluid loss reducer according to claim 1, characterized in that: The agent uniform distribution mechanism includes a plurality of flocculant uniform distribution components for spraying flocculants which are vertically and detachably arranged on the top of the flocculant input pipe, and an iron salt dephosphorization agent uniform distribution component for spraying the iron salt dephosphorization agent is detachably arranged at the bottom of the iron salt dephosphorization agent input pipe and at a position relative to each flocculant uniform distribution component.

4. The wastewater treatment device based on the production of oil well cement fluid loss reducer according to claim 3, characterized in that: The flocculant uniform distribution component includes a threaded tube detachably arranged in the top discharge port of the flocculant input pipe, and an output pipe is sealed and rotatably arranged on the top of the threaded tube. Drive blocks are fixedly arranged on both sides of the top of the output pipe for driving the iron salt dephosphorization agent uniform distribution component to complete the operation of spraying the iron salt dephosphorization agent. A plurality of receiving grooves are evenly arranged on the side wall of the output pipe, and a flocculant spray arm assembly for increasing the flocculant spraying range is movably arranged inside each of the receiving grooves. Avoidance grooves are arranged on both sides of the inner wall of the receiving groove, and a wedge block is fixedly arranged on the inner wall of one of the avoidance grooves. A plurality of unblocking steel needles are fixedly arranged on the side of the inner wall of the receiving groove close to another avoidance groove, and the wedge block and the unblocking steel needles are used to cooperate to complete the anti-blocking and cleaning operation of the flocculant spray arm assembly.

5. The wastewater treatment device based on the production of oil well cement fluid loss reducer according to claim 4, characterized in that: The flocculant spray arm assembly includes a liquid medicine delivery pipe 1 which is rotatably arranged inside a storage tank through a rotating shaft, a spoiler for disturbing wastewater, flocculant and iron salt dephosphorization agent is fixedly arranged on the top of the liquid medicine delivery pipe 1, a plurality of nozzles 1 connected to the interior of the liquid medicine delivery pipe 1 are evenly fixedly arranged on the bottom of the liquid medicine delivery pipe 1, and a plurality of nozzles 2 are evenly fixedly arranged on the side wall of the liquid medicine delivery pipe 1, the nozzles 1 and 2 are both used to spray the flocculant in the liquid medicine delivery pipe 1 into the regulating tank, and a dredging component for removing foreign matter inside the nozzle 2 is arranged inside each of the nozzles 2.

6. The wastewater treatment device based on the production of oil well cement fluid loss reducer according to claim 5, characterized in that: The unclogging component includes a mounting frame fixed on the inner wall of a medicine liquid delivery tube and a unclogging steel needle slidably passing through the mounting frame, the medicine liquid delivery tube and one of the nozzles 2. A spring limiting ring is provided on the outer wall of the unclogging steel needle 1 and located in the inner fixed sleeve of the mounting frame. A spring is provided on the outer wall of the unclogging steel needle 1 and located in the sliding sleeve between the mounting frame and the spring limiting ring. When the end of the unclogging steel needle 1 away from the nozzle 2 is not subject to external force, the unclogging steel needle 1 is located outside the nozzle 2, and the flocculant can be output through the nozzle 2.

7. The wastewater treatment device based on the production of oil well cement fluid loss reducer according to claim 3, characterized in that: The iron salt dephosphorus agent uniform distribution component includes a liquid distribution cylinder that is detachably arranged in the liquid discharge port at the bottom of the iron salt dephosphorus agent input pipe, and a plurality of liquid delivery pipes 2 are evenly and fixedly arranged at the bottom of the liquid distribution cylinder, which are used to disperse and output the iron salt dephosphorus agent inside the liquid distribution cylinder, and a plurality of nozzles 3 are fixedly arranged at the bottom of each of the liquid delivery pipes 2, and a plurality of spray holes are evenly opened on the outer wall of the nozzle 3. A cleaning component is arranged at the bottom of the liquid distribution cylinder, which is used to clean the outer wall of the nozzle 3.

8. The wastewater treatment device based on the production of oil well cement fluid loss reducer according to claim 7, characterized in that: The cleaning component includes a cylinder fixedly arranged at the bottom of the liquid distributing cylinder and a piston slidably arranged inside the cylinder, a spring 2 is arranged inside the cylinder and above the piston, a lifting rod is fixedly arranged at the bottom of the piston, the lifting rod slides through the cylinder and is fixedly arranged with a cross plate, spherical bumps are fixedly arranged on both sides of the bottom of the cross plate, a plurality of support arms corresponding to the position of the second liquid medicine delivery pipe are fixedly arranged on the outer wall of the lifting rod and located outside the cylinder, a scraper is fixedly arranged at one end of each of the support arms, and through holes matching the outer diameter of the third nozzle are evenly opened on the top of the scraper, each through hole is slidably sleeved on the outer wall of the third nozzle at a corresponding position, and when the cleaning component is not subjected to external force, the through hole completely seals the spray hole on the outer wall of the third nozzle at the corresponding position.

9. A method for treating wastewater from the production of oil well cement fluid loss reducer, characterized in that: The wastewater treatment device for oil well cement fluid loss reducer production according to any one of claims 1 to 8 comprises the following steps: Step 1, the wastewater is discharged into the regulating tank, and since the chemical agent application mechanism is connected to the external flocculant supply equipment and the iron salt dephosphorization agent supply equipment, a preset amount of flocculant and iron salt dephosphorization agent is sprayed into the regulating tank through the chemical agent application mechanism; Step 2: Using a water pump, the wastewater after preliminary treatment in the regulating tank is input into the anaerobic tank to hydrolyze and acidify the organic matter and remove the organic matter in the wastewater; Step 3: The wastewater treated in the anaerobic tank flows into the aerobic tank to quickly decompose the organic matter; Step 4: The wastewater flowing into the sludge sedimentation tank gradually settles the suspended solids under the action of gravity, and the sediment is re-input into the anaerobic tank for further treatment through the sludge pump; Step 5: Use a water pump to pump the supernatant above the sludge sedimentation tank into the clean water tank to form clean water that meets the discharge standards and discharge it through the clean water outlet.

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