Treatment device for cyanamide plant growth regulator production wastewater

Abstract

The invention discloses a treatment device for cyanamide plant growth regulator production wastewater. The treatment device comprises an oxidation pond and a flocculation pond, and a detection box is arranged on one side of the bottom end of the oxidation pond; aiming at an oxidation and precipitation treatment process of cyanamide wastewater, an oxidation pond and a flocculation pond are arranged in a partitioned manner, main oxidation and precipitation treatment is performed in the oxidation pond, a jet flow stirring assembly which is driven in a rotating manner is arranged at the upper end part of the oxidation pond, and wastewater introduced into the oxidation pond is used as a circulating carrier; the device is used for uniformly spraying a synchronously supplied oxidant into an oxidation pond through a jet stirring assembly, so that the reaction effect between the oxidant and wastewater is improved, and the theoretical dosage of a medicament is obtained by combining wastewater information with a preset dosage proportion model; and in combination with feeding and ORP monitoring feedback supplementing modes, the oxidant is fed in a precise, dynamic and intelligent mode, and the problem that the oxidant is too much or treatment is not thorough possibly caused by a traditional fixed feeding mode is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and more specifically, to a treatment device for wastewater produced in the production of cyanamide plant growth regulators. Background Art

[0002] Cyanamide plant growth regulators are used to break seed dormancy, promote germination, and can make flower buds more uniform, significantly increasing the glucose content. During the production process of cyanamide plant growth regulators, wastewater is generated, which contains cyanide, ammonia nitrogen substances, heavy metal substances, and suspended solids, etc. Common wastewater treatment processes include stages such as pretreatment, biochemical treatment, and advanced treatment.

[0003] Considering the toxicity of cyanide, directly entering the biochemical treatment may inhibit microorganisms. Therefore, the pretreatment stage must effectively remove or degrade cyanide. Thus, in the treatment of cyanamide wastewater, the oxidation precipitation process is the core link, and this link requires adding agents to achieve cyanide oxidation, heavy metal precipitation, and the removal of ammonia nitrogen substances and suspended solids.

[0004] The common method of adding agents is still a one-time addition according to a preset amount. Especially when adding oxidants, on the one hand, the traditional one-time addition method is difficult to achieve sufficient mixing and flow between the agent and the wastewater. On the other hand, it is impossible to reasonably adjust the dosage of the agent according to the real-time reaction situation. When the dosage is small, the complete conversion of cyanide cannot be achieved. When the dosage is too much, excessive oxidants such as sodium hypochlorite or hydrogen peroxide will remain in the water, consuming the activity of the flocculant during the subsequent flocculation process and inhibiting hydrolysis, which has certain drawbacks. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that it is difficult to reasonably adjust the dosage of the agent according to the real-time reaction situation during the precipitation treatment of wastewater through one-time agent addition. Now, a treatment device for wastewater produced in the production of cyanamide plant growth regulators is provided.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A treatment device for wastewater produced in the production of cyanamide plant growth regulators includes an oxidation tank and a flocculation tank. One side of the bottom end of the oxidation tank is provided with a detection box. At the bottom of the oxidation tank, there is a sludge discharge structure with one end connected to the detection box. At the detection box, there is a pump connected to it and externally connected to a wastewater inlet pipe. The water outlet end of the pump is connected to a rotary joint fixed on the upper side wall of the oxidation tank; Inside the oxidation tank, a jet agitation assembly connected to the rotary joint is rotatably driven and installed. The rotary joint is also externally connected to an oxidant storage tank. On the end wall of the oxidation tank close to the flocculation tank, there is a water outlet. At the water outlet, a drainage assembly acting on the flocculation tank is installed in a lifting manner; An ORP detector and a control panel are installed on the detection box. Inside the control panel, there are an information collection module, a first-stage dosing module, a measurement feedback module, and a second-stage dosing module; The information collection module is used to obtain the wastewater information of the wastewater flowing into the oxidation tank and send it to the first-stage dosing module. The first-stage dosing module obtains the oxidation dosing amount according to the wastewater information, generates a main dosing signal, and releases it at the oxidation dosing amount of %. The measurement feedback module is used to obtain the treatment information of the wastewater after the main dosing effect, obtain the single-dose replenishment coefficient, generate a feedback replenishment signal, use the oxidation dosing amount of % as the second-stage initial oxidation dosing amount, combine the single-dose replenishment coefficient, and calculate the single-dose replenishment amount successively for release. The second-stage dosing module obtains the residual pollution information of the wastewater after the first-stage treatment, obtains the flocculation dosing amount, and generates a flocculation dosing signal.

[0007] Furthermore, the sludge discharge structure includes a plurality of sludge discharge inclined pipes obliquely arranged at the bottom inside the oxidation tank. The inclined ends of the sludge discharge inclined pipes extend downward to the detection box. A spiral sludge conveying blade is rotatably installed inside each sludge discharge inclined pipe. Outside the oxidation tank, a driving mechanism is installed for the linkage rotation of the plurality of spiral sludge conveying blades.

[0008] Furthermore, the jet agitation assembly includes a rotating cylinder rotatably installed between the opposite inner walls of the oxidation tank. Along the horizontal direction, multiple groups of jet pipes are distributed on the outer end wall of the rotating cylinder. Each group of jet pipes is provided with a plurality of them in a ring shape. The multiple jet pipes are all communicated with the inside of the rotating cylinder. At the top of the oxidation tank, a sealing head is installed that is movably adapted to the outer edges of the multiple jet pipes, which is beneficial to the oxidation treatment of the calcium cyanamide wastewater in a closed space and improves the treatment safety.

[0009] Furthermore, a blocking assembly is also installed inside the detection box in a lifting manner and abuts against the outside of the bottom end of the sludge discharge structure. The blocking assembly includes a pair of electric push rods one fixedly installed on the detection box. The telescopic ends of the pair of electric push rods one penetrate into the inside of the detection box and are fixed with a blocking plate arranged to fit the inclined bottom end of the sludge discharge inclined pipe. A sludge discharge port for the blocking plate to penetrate up and down is opened at the bottom end of the detection box. An inclined surface is opened on the bottom end surface of the detection box and inclined downward towards the sludge discharge port. And a sludge discharge surface parallel to the inclined surface is provided on the upper end surface of the blocking plate.

[0010] Furthermore, the drainage assembly includes a switching plate movably and hermetically installed in a lifting manner at the water outlet. A drainage plate inclined downward towards the flocculation tank is installed at the top end of the switching plate. A flow-through groove with upper and lower openings is reserved inside the drainage plate. An outer baffle fitting the outer wall of the oxidation tank is fixed on the outer side of the top end of the drainage plate. The bottom end of the drainage plate is fixedly communicated with a drainage pipe with a solenoid valve at one end, and the other end of the drainage pipe is externally connected with a sampling pipe.

[0011] Furthermore, the process of obtaining the oxidation dosing amount includes: The cyanide content, heavy metal ion content, ammonia nitrogen content and total wastewater volume of the wastewater flowing into the oxidation tank are collected by the information collection module. The cyanide content, heavy metal ion content and ammonia nitrogen content are respectively marked as CNi, ZJi and ANi, and the pollution treatment volume WCi is obtained through the formula WCi = CNi×α + ZJi×β + ANi×γ, where α, β and γ are the preset weight factors of CNi, ZJi and ANi respectively, and α>β>γ>1; The ratio of the pollution treatment volume to the total wastewater volume is substituted into the preset chemical dosing ratio model for calculation to obtain the oxidation dosing volume.

[0012] Furthermore, the process of obtaining the single-dose supplement coefficient includes: The information collection module collects the ORP value of the sewage flowing into the detection tank in real time through an ORP detector, and substitutes the ratio of the measured real-time ORP value to the ORP set value into the preset chemical dosing ratio model for calculation to obtain the single-dose supplement coefficient.

[0013] Furthermore, after generating the feedback supplementary signal, 10% of the oxidation dosing volume is used as the second-order initial oxidation dosing volume for the first chemical dosing. The product value of the second-order initial oxidation dosing volume and the initially obtained single-dose supplement coefficient is used as the single-dose chemical dosing amount to release the oxidant for the second chemical dosing. The ratio of the newly measured real-time ORP value to the ORP set value is substituted into the preset chemical dosing ratio model for calculation to obtain a new single-dose supplement coefficient. The difference between the second-order initial oxidation dosing volume and the single-dose chemical dosing amount is used as the second-order continuous oxidation dosing volume, and the product of the second-order continuous oxidation dosing volume and the newly obtained single-dose supplement coefficient is used as the new single-dose chemical dosing amount to release the oxidant, and so on in a cycle until the measured real-time ORP value reaches the preset ORP value range.

[0014] Furthermore, the process of obtaining the flocculation dosing volume includes: The wastewater discharged from the oxidation tank into the flocculation tank is sampled multiple times through a sampling pipe. The single-sampling turbidity is obtained through a turbidimeter, the average turbidity is calculated, and the total remaining wastewater volume discharged into the flocculation tank is obtained. The ratio of the average turbidity to the total remaining wastewater volume is substituted into the preset flocculation dosing ratio model for calculation to obtain the flocculation dosing volume, and one-time dosing or multiple-dose dosing is selected.

[0015] Compared with the prior art, the advantages of the present invention are: This solution is for the oxidation precipitation treatment process of calcium cyanamide wastewater. An oxidation pond and a flocculation pond are set up in zones. The main oxidation precipitation treatment is carried out in the oxidation pond. A jet agitation component driven by rotation is set at the upper end of the oxidation pond, using the wastewater introduced into the oxidation pond as a circulation carrier to evenly spray the simultaneously supplied oxidant into the oxidation pond through the jet agitation component, which is beneficial to improving the reaction effect between the oxidant and the wastewater. Based on the wastewater information and the preset dosing ratio model, the theoretical dosing amount of the reagent is obtained, and the oxidant is "precision", "dynamic", and "intelligent" dosed by combining the dosing method with the monitoring and feedback supplementation of ORP, avoiding the problems of excessive oxidant or incomplete treatment that may be caused by the traditional fixed dosing method.

[0016] During the dosing process of the oxidant, the pollution treatment amount is obtained by collecting wastewater information, and the ratio of the pollution treatment amount to the total wastewater amount is substituted into the preset dosing ratio model for calculation to obtain the oxidation dosing amount. Similarly, during the subsequent flocculation precipitation treatment process in the flocculation pond, the drainage component is opened downward to promote the supernatant wastewater in the oxidation pond to slowly flow into the flocculation pond through the drainage component. During the process of the supernatant wastewater flowing in, the wastewater information after oxidation is collected multiple times, and according to the ratio of the average turbidity to the remaining total wastewater amount, it is substituted into the preset flocculation dosing ratio model for calculation to obtain the flocculation dosing amount, realizing automatically obtaining the dosing amounts of the reagents at different treatment stages according to the needs of sewage treatment, which helps to improve the precise control of the reagents. Brief Description of the Drawings

[0017] Figure 1 is a front structural schematic diagram of the present invention; Figure 2 is a back structural schematic diagram of the present invention; Figure 3 is a front cross-sectional view of the present invention; Figure 4 is a structural schematic diagram of the sludge discharge structure of the present invention; Figure 5 is a partial cross-sectional view of the jet agitation component of the present invention; Figure 6 is a structural schematic diagram of the drainage component of the present invention; Figure 7 is a cross-sectional view of the drainage component of the present invention; Figure 8 is a schematic diagram of the static working state after the oxidation of the wastewater in the oxidation pond of the present invention; Figure 9 is a structural schematic diagram of the present invention when the drainage component is pushed downward to discharge the supernatant wastewater into the flocculation pond; Figure 10 is a structural schematic diagram of the present invention when sludge is discharged from the oxidation pond; Figure 11It is a schematic diagram of the structure in the flocculation tank of the present invention; Figure 12 It is a system principle block diagram of the present invention.

[0018] Description of the numbers in the figure: 1. Oxidation tank; 101. Water outlet; 2. Flocculation tank; 3. Detection box; 4. Wastewater inlet pipe; 5. Pump; 6. Drainage assembly; 61. Opening and closing plate; 62. Drainage plate; 63. Drainage pipe; 64. Outer baffle; 65. Sampling tube; 7. Rotating drum; 8. Jet tube; 9. Oxidant storage tank; 10. Mud discharge inclined pipe; 11. Spiral mud conveying blade; 12. Sealing plate; 13. Electric push rod one; 14. ORP detector; 15. Reflux pipe; 16. Electric push rod two; 17. Mixing blade; 18. Mud pushing plate. DETAILED DESCRIPTION

[0019] The following will combine 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 the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0020] Embodiment 1: The present invention discloses a device for treating wastewater produced by cyanamide plant growth regulator. Figures 1-3 , including an oxidation tank 1 and a flocculation tank 2 which are arranged in front and back, and a mud discharge structure with one end penetrating to the outside is provided at the bottom of the oxidation tank 1; A detection box 3 connected to the mud discharge structure is fixed at the outer end of the oxidation tank 1, and a pump 5 connected thereto is provided at the detection box 3. A reflux pipe 15 is provided at the bottom of the detection box 3 and connected to the water inlet end of the pump 5. The water inlet end of the pump 5 is also externally connected to a wastewater inlet pipe 4. The water outlet end of the pump 5 is connected to a rotary joint fixed to the upper side wall of the oxidation tank 1 through a pipeline. A jet stirring assembly connected to a rotary joint is installed in the internal rotation drive at the upper end of the oxidation tank 1. An oxidant storage tank 9 connected to the rotary joint is provided on one side of the upper end of the oxidation tank 1. The oxidant storage tank 9 is connected to the rotary joint through a reagent inlet pipe to realize the joint supply of wastewater and reagents.

[0021] See also Figure 3 , Figure 4 The mud discharge structure includes a plurality of mud discharge inclined pipes 10 obliquely arranged at the bottom of the oxidation tank 1, and the inclined ends of the mud discharge inclined pipes 10 extend downward to the detection box 3. A spiral mud conveying blade 11 is rotatably installed inside each mud discharge inclined pipe 10, and a driving mechanism for linkage rotation of the plurality of spiral mud conveying blades 11 is installed outside the oxidation tank 1.

[0022] See also Figure 3 andFigure 5 The jet agitation assembly includes a rotating cylinder 7 rotatably installed between the opposite inner walls of the oxidation tank 1. A plurality of groups of jet pipes 8 are distributed along the horizontal direction on the outer end wall of the cylinder 7. Each group of jet pipes 8 is provided with a plurality of jet pipes 8 annularly. The plurality of jet pipes 8 are all communicated with the inside of the cylinder 7. A channel for fluid circulation is opened on the jet pipe 8. A driving motor for rotating the cylinder 7 is fixed to the outer end of the oxidation tank 1. One end of the cylinder 7 away from the driving motor is connected to a rotary joint, so as to realize the rotation of the cylinder 7 without affecting the liquid circulation. A sealing head that is movably adapted to the outer edges of the plurality of jet pipes 8 is installed at the top of the oxidation tank 1, which is beneficial to the oxidation treatment of the calcium cyanamide wastewater in a closed space and improves the treatment safety. Please refer to Figure 3 Inside the detection box 3, a blocking assembly that abuts against the outside of the bottom end of the sludge discharge structure is also installed in a lifting manner. The blocking assembly includes a pair of electric push rods 13 fixedly installed on the detection box 3. The telescopic ends of the pair of electric push rods 13 penetrate into the inside of the detection box 3 and are fixed with a blocking plate 12 disposed in contact with the inclined bottom end of the sludge discharge inclined pipe 10. A sludge discharge port for the blocking plate 12 to penetrate up and down is opened at the bottom end of the detection box 3. An inclined surface that is inclined downward towards the sludge discharge port is opened on the bottom end surface of the detection box 3, and a sludge discharge surface parallel to the inclined surface is provided on the upper end surface of the blocking plate 12. For the main oxidation and precipitation treatment in the oxidation tank 1, through the cooperation of the wastewater inlet pipe 4 and the suction pump 5, the calcium cyanamide wastewater to be treated is introduced into the cylinder 7. At the same time, a small amount of oxidant is continuously introduced. In this process, the cylinder 7 is driven to rotate by an external driving motor. Using the wastewater as a flowing carrier, the supplied oxidant is evenly sprayed into the oxidation tank 1 in a rotating jet manner, and through the agitation of the wastewater by the plurality of groups of jet pipes 8, the mixing effect between the wastewater and the reagent is effectively improved. In this process, the spiral sludge conveying blades 11 at the plurality of sludge discharge inclined pipes 10 are synchronously started, which is beneficial to improving the agitation effect at the bottom of the oxidation tank 1. After the wastewater supply is completed, the blocking assembly inside the detection box 3 is opened, and relying on the cooperation of the oxidation tank 1, the flocculation tank 2, the return pipe 15 and the jet agitation assembly, the circulation flow of the wastewater is realized, and in a dynamic mixing manner, the reaction effect is further promoted.

[0023] Please refer to Figures 6-9 An outlet 101 is opened on the end wall of the oxidation tank 1 close to the flocculation tank 2. A drainage assembly 6 that opens and closes the outlet 101 and whose liquid outlet end extends into the flocculation tank 2 is installed at the outlet 101 in a lifting manner. A pair of electric push rods 13 acting on the drainage assembly 6 are installed at the top rear of the oxidation tank 1. The drainage component 6 includes a switch plate 61 that is movably and hermetically installed and lifted at the water outlet 101. A drainage plate 62 that is inclined downward toward the flocculation tank 2 is installed at the top end of the switch plate 61. A circulation groove with upper and lower openings is reserved inside the drainage plate 62. An outer baffle 64 that fits against the outer wall of the oxidation tank 1 is fixed to the outer side of the top end of the drainage plate 62. A drainage pipe 63 with a solenoid valve at one end is fixedly connected to the bottom end of the drainage plate 62, and the other end of the drainage pipe 63 is externally connected to a sampling pipe 65.

[0024] Please refer to Figures 8-9 , after the oxidation process is completed, close the plugging component in the detection box 3, completely extract the wastewater in the detection box 3 into the oxidation tank 1, and turn off the rotation operations of the rotary drum 7 and the spiral sludge conveying blade 11. Then enter the static precipitation process, and precipitate and settle at the sludge discharge inclined pipe 10 and its upper part. At this time, drive the outer baffle 64 downward through the electric push rod 1, gradually open the water outlet 101 downward, and the supernatant wastewater in the oxidation tank 1 will overflow into the flocculation tank 2 through the exposed water outlet 101 and the drainage plate 62. Without the suction of the pump, the supernatant wastewater can flow into the flocculation tank 2 more gently, so as not to disturb the lower sediment in the oxidation tank 1 due to the suction of the pump.

[0025] When the supernatant wastewater in the oxidation tank 1 is discharged into the flocculation tank 2, at this time, push the plugging plate 12 downward through the electric push rod 1 again. Please refer to Figure 10 , until the sludge discharge port is exposed, then restart the spiral sludge conveying blade 11, and the spiral sludge conveying blade 11 will discharge the sludge at the sludge discharge inclined pipe 10 toward the sludge discharge port. The cyanide-containing sludge needs to be detoxified and then sent to a hazardous waste qualification unit for disposal.

[0026] In addition, please refer to Figure 11 , it should be added that rotating drive stirring blades 17 are also provided in the flocculation tank 2. Before flocculation precipitation, the wastewater and the flocculant are stirred by the stirring blades 17, and a sludge pushing plate 18 that can be driven horizontally outward is added on one side of the bottom end of the flocculation tank 2. A sludge discharge channel that can be opened and closed is provided on the other side of the bottom end of the flocculation tank 2. The outer end face of the sludge pushing plate 18 is provided with an inclined sludge pushing surface. After flocculation precipitation, drive the sludge pushing plate 18 outward to discharge the sludge in the flocculation tank 2 toward the sludge discharge channel at the outer end of the flocculation tank 2.

[0027] Embodiment 2: On the basis of Embodiment 1, an ORP detector 14 and a control panel that is signal-connected to the ORP detector 14 are added to the detection box 3 to accurately calculate and control the dosing of the medicament through an intelligent control system, as follows: Please refer to Figure 12 , the control panel internally is provided with an information acquisition module, a first-order dosing module, a measurement feedback module, and a second-order dosing module; The information collection module is used to obtain the wastewater information of the wastewater flowing into the oxidation tank 1 and send it to the first-stage dosing module. The first-stage dosing module obtains the oxidation dosage based on the wastewater information and generates a main dosing signal. The process of obtaining the oxidation dosage includes: Collect the cyanide content, heavy metal ion content, ammonia nitrogen content, and total wastewater volume of the wastewater flowing into the oxidation tank 1 through the information collection module. Mark the cyanide content, heavy metal ion content, and ammonia nitrogen content as CNi, ZJi, and ANi respectively. Through the formula WCi = CNi×α + ZJi×β + ANi×γ, obtain the pollution treatment amount WCi, where α, β, and γ are the preset weight factors of CNi, ZJi, and ANi respectively, and α>β>γ>1; Substitute the ratio of the pollution treatment amount to the total wastewater volume into the preset dosing ratio model for calculation. The dosing ratio model is a coefficient relationship obtained through an empirical value or experimental data. For example, for a certain total amount of wastewater and a certain amount of pollutants, obtain the preset standard drug dosage. Through the ratio model relationship, obtain the oxidation dosage. This can be obtained through existing technical means. In the main dosing stage, release 90% of the oxidation dosage, and reserve 10% of the oxidation dosage for the subsequent feedback supplementary dosing regulation stage; The measurement feedback module is used to obtain the treatment information of the wastewater after the main dosing. The treatment information is to collect the ORP value of the sewage flowing into the detection box 3 in real time through the ORP detector 14. The ORP value directly reflects the remaining ability of the oxidant in the water. Substitute the ratio of the measured real-time ORP value to the ORP set value into the preset supplementary dosing ratio model for calculation to obtain the single-dose supplementary coefficient and generate a feedback supplementary dosing signal. Use 10% of the oxidation dosage as the second-order initial oxidation dosage. Combine the single-dose supplementary coefficient and calculate the single-dose supplementary amount successively for release. Through real-time monitoring, the system can accurately judge whether the oxidant is insufficient or excessive, avoiding blind supplementary dosing. The traditional fixed dosing method may lead to waste (excessive) or incomplete treatment (insufficient) of the oxidant, while the ORP feedback can dynamically adjust the supplementary dosing amount to achieve "dosing on demand"; The process of the first-stage reagent feedback supplementary dosing is as follows: After generating the feedback supplementary dosing signal, use 10% of the oxidation dosage as the second-order initial oxidation dosage for the first supplementary dosing. Use the product value of the second-order initial oxidation dosage and the initially obtained single-dose supplementary coefficient as the single-dose supplementary amount to release the oxidant for the second supplementary dosing. Substitute the ratio of the newly measured real-time ORP value to the ORP set value into the preset supplementary dosing ratio model for calculation to obtain a new single-dose supplementary coefficient. Use the difference between the second-order initial oxidation dosage and the single-dose supplementary amount as the second-order continuous oxidation dosage, and use the product of the second-order continuous oxidation dosage and the newly obtained single-dose supplementary coefficient as the new single-dose supplementary amount to release the oxidant. Repeat this cycle until the measured real-time ORP value reaches the preset ORP value range; When the pollutant concentration, flow rate or composition in the wastewater changes, the ORP feedback mechanism can respond quickly. Through the closed-loop control of ORP and oxidant dosing, it ensures that pollutants such as cyanide and heavy metals in the effluent are completely oxidized and meet the discharge standards.

[0028] The second-stage dosing module obtains the residual pollution information of the wastewater after the first-stage treatment through the information collection module. It repeatedly extracts the wastewater discharged from the oxidation tank 1 into the flocculation tank 2 through the sampling pipe 65, obtains the turbidity of a single sampling through the turbidimeter, calculates the average turbidity, and obtains the total amount of the remaining wastewater discharged into the flocculation tank 2. Substitute the ratio of the average turbidity to the total amount of the remaining wastewater into the preset flocculation dosing ratio model for calculation to obtain the flocculation dosing amount, and generate a flocculation dosing signal to select single dosing or multiple dosing.

[0029] To sum up: For the oxidation and precipitation treatment process of dicyandiamide wastewater, the oxidation tank 1 and the flocculation tank 2 are set up in zones. The main oxidation and precipitation treatment is carried out in the oxidation tank 1. A jet agitation assembly driven by rotation is arranged at the upper end of the oxidation tank 1. Using the wastewater flowing into the interior of the oxidation tank 1 as a flowing carrier, it is used to evenly spray the synchronously supplied oxidant into the oxidation tank 1 through the jet agitation assembly, which is beneficial to improving the reaction effect between the oxidant and the wastewater. Combining the wastewater information with the preset dosing ratio model to obtain the theoretical dosing amount of the chemical agent, that is, obtaining the pollution treatment amount by collecting wastewater information, substituting the ratio of the pollution treatment amount to the total amount of wastewater into the preset chemical dosing ratio model for calculation to obtain the oxidation dosing amount; And through the method of combining dosing, ORP monitoring and feedback supplementation, the oxidant is "precision", "dynamic" and "intelligent" dosed, avoiding the problems of excessive oxidant or incomplete treatment that may be caused by the traditional fixed dosing method. After the main dosing (initial large-dose oxidation), the oxidation ability is maintained through ORP feedback supplementation, which is applicable to long-term operation or high-concentration wastewater treatment.

[0030] The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto; any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A treatment device for the production wastewater of cyanamide plant growth regulator, comprising an oxidation pond and a flocculation pond, characterized in that: One side of the bottom end of the oxidation tank is provided with a detection box. A sludge discharge structure with one end communicating with the detection box is arranged at the inner bottom of the oxidation tank. A pump is provided at the detection box and is communicated with the detection box and externally connected with a wastewater inlet pipe. A jet agitation assembly rotationally communicated with the water outlet end of the pump is rotationally driven and installed inside the oxidation tank. The water outlet end of the pump is externally connected with a chemical agent inlet pipe. An outlet is opened on the rear end wall of the oxidation tank, and a drainage assembly acting on the flocculation tank is installed in a lifting manner at the outlet. An ORP detector and a control panel are installed on the detection box. An information acquisition module, a first-stage dosing module, a determination feedback module and a second-stage dosing module are arranged inside the control panel. The information acquisition module is used to obtain the wastewater information of the wastewater introduced into the oxidation tank and send it to the first-stage dosing module. The first-stage dosing module obtains the oxidation dosing amount according to the wastewater information, generates a main dosing signal, and releases it at 90% of the oxidation dosing amount. The determination feedback module is used to obtain the treatment information of the wastewater, obtain a single-dose replenishment coefficient, generate a feedback replenishment signal, use 10% of the oxidation dosing amount as the second-stage initial oxidation dosing amount, combine the single-dose replenishment coefficient, and successively calculate the single-dose replenishment amount for release. The second-stage dosing module obtains the residual pollution information of the wastewater, obtains the flocculation dosing amount, and generates a flocculation dosing signal.

2. The treatment device for the production wastewater of a cyanamide plant growth regulator according to claim 1, wherein: The sludge discharge structure includes a plurality of sludge discharge inclined pipes inclined towards the detection box, and a spiral sludge conveying blade is rotatably installed inside each sludge discharge inclined pipe.

3. The treatment device for the wastewater produced in the production of a cyanamide plant growth regulator according to claim 1, wherein: The jet agitation assembly includes a rotating cylinder rotatably installed between the opposite inner walls of the oxidation tank, and a plurality of groups of jet pipes communicated with the rotating cylinder are horizontally distributed on the outer end wall of the rotating cylinder.

4. The treatment device for the wastewater produced in the production of a cyanamide plant growth regulator according to claim 1, wherein: A blocking assembly abutted against the outside of the bottom end of the sludge discharge structure is also installed in the detection box in a lifting manner. The blocking assembly includes a pair of electric push rods I fixedly installed on the detection box. The telescopic ends of the pair of electric push rods I penetrate into the detection box and are fixed with a blocking plate arranged to fit the inclined bottom end of the sludge discharge inclined pipe.

5. The treatment device for the production wastewater of a cyanamide plant growth regulator according to claim 1, characterized in that: The drainage assembly includes a switch plate movably and hermetically installed in a lifting manner at the outlet. A drainage plate inclined downward towards the flocculation tank is installed at the top end of the switch plate. The bottom end of the drainage plate is fixedly communicated with a drainage pipe with a solenoid valve at one end, and the other end of the drainage pipe is externally connected with a sampling pipe.

6. The treatment device for the wastewater from the production of a single-cyanamide plant growth regulator according to claim 5, characterized in that: The process of obtaining the oxidation dosing amount includes: The cyanide content, heavy metal ion content, ammonia nitrogen content and total wastewater amount of the wastewater introduced into the oxidation tank are collected through the information acquisition module. The pollution treatment amount is obtained by performing a formula calculation on the cyanide content, heavy metal ion content and ammonia nitrogen content. The ratio of the pollution treatment amount to the total wastewater amount is substituted into a preset dosing ratio model for calculation to obtain the oxidation dosing amount.

7. The treatment device for the wastewater from the production of cyanamide plant growth regulator according to claim 6, wherein: The process of obtaining the single-dose replenishment coefficient includes: The information acquisition module collects the ORP value of the wastewater in real time through the ORP detector, and substitutes the ratio of the measured real-time ORP value to the ORP set value into a preset replenishment ratio model for calculation to obtain the single-dose replenishment coefficient.

8. The treatment device for the wastewater produced in the production of the cyanamide plant growth regulator according to claim 7, wherein: After generating the feedback replenishment signal, 10% of the oxidation dosing amount is used as the second-stage initial oxidation dosing amount for the first replenishment, and the product value of the second-stage initial oxidation dosing amount and the initially obtained single-dose replenishment coefficient is used as the single-dose replenishment amount to release the oxidant. Administer the second dose of medicine. Substitute the ratio of the newly measured real-time ORP value to the ORP set value into the preset medicine dosing ratio model for calculation to obtain a new single-dose medicine coefficient. Use the difference between the second-order initial oxidant dosage and the single-dose medicine amount as the second-order continuous oxidant dosage, and use the product of the second-order continuous oxidant dosage and the newly obtained single-dose medicine coefficient as the new single-dose medicine amount to release the oxidant. Repeat this process until the measured real-time ORP value reaches the preset ORP value range.

9. The treatment device for the wastewater produced in the production of a cyanamide plant growth regulator according to claim 8, wherein: The process of obtaining the flocculation dosage includes: Multiple samples of the wastewater discharged from the oxidation tank into the flocculation tank are taken through the sampling pipe. The turbidity of a single sample is obtained through a turbidimeter, the average turbidity is calculated, and the total amount of the remaining wastewater discharged into the flocculation tank is obtained. Substitute the ratio of the average turbidity to the total amount of the remaining wastewater into the preset flocculation dosing ratio model for calculation to obtain the flocculation dosage.

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