Staged explosive high-concentration chemical wastewater treatment equipment

Abstract

The invention discloses staged explosive high-concentration chemical wastewater treatment equipment, and relates to the technical field of wastewater treatment, the staged explosive high-concentration chemical wastewater treatment equipment comprises a uniform stirring treatment assembly, the uniform stirring treatment assembly is used for uniformly mixing an agent and wastewater, and a guide-in pipe is fixedly mounted on the surface of one side of the uniform stirring treatment assembly. According to the staged high-concentration chemical wastewater treatment equipment for explosives and powders, when high-concentration chemical wastewater for explosives and powders is treated, a worker firstly conveys acidic wastewater and alkaline wastewater into the uniform stirring treatment assembly, the wastewater is pretreated through the uniform stirring treatment assembly to be mixed, and the PH value is reduced through an acid-base neutralization reaction; the toxicity of nitrobenzene compounds to microorganisms is reduced, the mixed wastewater is subjected to multi-layer filtration through the layered filtration assembly and then collected in the precipitation and pollution discharge assembly, the precipitated wastewater is conveyed into the electrolysis tower for subsequent reaction treatment, and the wastewater is subjected to filtration treatment in advance, so that the load of a subsequent treatment process can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular to a hierarchical explosive high-concentration chemical wastewater treatment equipment. BACKGROUND

[0002] Chemical industry wastewater treatment is the main measure of chemical industry wastewater pollution prevention and control, covering the wastewater treatment generated in the production process of petroleum chemical industry, coal chemical industry, chemical fertilizer industry, pharmaceutical industry and the like.

[0003] The explosive high-concentration chemical wastewater contains not only unreacted explosive monomers, but also nitration reaction by-products (such as nitrophenol, nitroso compound), production accessories (such as sulfuric acid, nitric acid, organic solvent) and metal ions (such as lead, copper and the like catalyst residues). Among them, nitro compounds have strong carcinogenicity and teratogenicity, and are difficult to be degraded by the natural environment, can be enriched in aquatic organisms, and harm humans through the food chain (such as causing liver damage and genetic mutation); at the same time, if the residual solid explosive particles are accumulated for a long time, there is a safety hazard of friction and impact to cause explosion.

[0004] At present, when the existing chemical wastewater treatment equipment treats wastewater, since the density of solid impurities in explosive wastewater is usually greater than water, if the residence time is long during static or conveying process, gravity sedimentation is easy to occur, resulting in the stratification phenomenon of wastewater with upper clear liquid and lower thick residue, and in addition, some insoluble organic pollutants may form local high-concentration aggregates with extremely uneven distribution. In addition, when treating wastewater, it is necessary to add supporting reagents into the wastewater, and if the stirring is not sufficient during the addition of reagents, the reagents are easy to form reagent groups locally or the local concentration is insufficient, resulting in coagulation failure, and thus increasing the filtration burden. SUMMARY

[0005] To achieve the above object, the present application is implemented by the following technical scheme: a hierarchical explosive high-concentration chemical wastewater treatment equipment, comprising: a uniform stirring treatment assembly, which is used for uniform mixing of reagents and wastewater, and a guide pipe is fixedly installed on the surface of one side of the uniform stirring treatment assembly; a stratified filtration assembly, which is used for guiding and conveying the mixed wastewater, and the stratified filtration assembly is provided with three groups, and the three groups of stratified filtration assemblies are distributed in a circumferential shape on the surface of the uniform stirring treatment assembly; The sediment pollution discharge assembly is used for discharging the filtered wastewater, one side of the outer surface of the sediment pollution discharge assembly is fixedly installed with a drain pipe, the top of the sediment pollution discharge assembly is rotatably installed with a valve, the bottom of the sediment pollution discharge assembly is fixedly installed with a support frame, one side of the outer surface of the sediment pollution discharge assembly is threadedly installed with a sealing cover, the sediment pollution discharge assembly and the uniform stirring treatment assembly are arranged on the same central axis, and the uniform stirring treatment assembly is connected with the sediment pollution discharge assembly through the layered filtering assembly. When the high-concentration explosive wastewater is treated, the staff first transports the acidic wastewater and the alkaline wastewater into the uniform stirring treatment assembly, the wastewater is pretreated by the uniform stirring treatment assembly to mix the wastewater, the PH value is reduced through the acid-base neutralization reaction, the toxicity of the nitrobenzene compound to the microorganism is reduced, the mixed wastewater is filtered through the layered filtering assembly, and the wastewater is collected in the sediment pollution discharge assembly, the suspended matter and the sediment are separated through gravity, the wastewater after the sedimentation is transported into the electrolytic tower for subsequent reaction treatment, the filtration treatment of the wastewater in advance can reduce the load of the subsequent treatment process, and the suspended matter can be prevented from blocking the filler of the micro-electrolysis tower or affecting the activity of the microorganism.

[0006] Preferably, the uniform stirring treatment assembly comprises a tank body, a top cover is installed at the top of the tank body, a beam frame is fixedly installed at the middle of the inside of the top cover, an installation seat is fixedly installed at the bottom of the beam frame, a hydraulic machine is fixedly installed at the bottom of the installation seat, a rolling plate is fixedly installed at the execution end of the hydraulic machine, a positioning frame is fixedly installed at the outer surface of the hydraulic machine, a motor is fixedly installed at the inside of the positioning frame, and a stirring piece is fixedly installed at the output end of the motor. The staff transports the acidic wastewater and the alkaline wastewater into the tank body through the inlet pipe, the wastewater is in the tank body, the density of the solid impurities in the explosive wastewater is usually greater than that of water, if the wastewater is left for a long time during the standing or transportation process, gravity sedimentation is prone to occur, the wastewater is separated into the upper clear liquid and the lower thick residue, and part of the insoluble organic pollutants may form a local high-concentration aggregate with extremely uneven distribution, at this time, the staff starts the hydraulic machine, the execution end of the hydraulic machine drives the rolling plate to ascend and descend in the tank body, so as to roll and press the large-particle impurities in the wastewater in the tank body, the rolling can crush the large-particle solids such as rock debris and explosive residues in the wastewater, so that the volume is reduced and the surface area is increased, which is more easily removed through the subsequent filtration process, in addition, the rolling can reduce the content of the suspended matter in the wastewater, avoid the blockage of the filter screen or the filter cloth, and improve the filtration efficiency, after the rolling treatment, the staff starts multiple motors, the output end of the motor drives the stirring piece to rotate in the tank body, and the acidic wastewater and the alkaline wastewater are uniformly mixed through rapid stirring.

[0007] Preferably, three positioning frames are arranged, the three positioning frames are circumferentially distributed on the outside of the hydraulic machine, the tank body is fixedly connected with the layered filtering assembly, and the stirring piece is rotatably installed in the cavity of the tank body through the motor.

[0008] Preferably, the stirring piece comprises a rotating shaft, a connecting seat is rotatably installed at the bottom of the rotating shaft, an extension shaft is fixedly installed at the bottom of the connecting seat, a conical rod is fixedly installed at the bottom of the extension shaft, a mounting ring is fixedly installed on the outer surface of the extension shaft, and a poking bar is fixedly installed in the mounting ring. Before the filtration treatment, the staff needs to put the matching reagent into the wastewater, and starts the motor to drive the connecting seat installed at the bottom of the rotating shaft to rotate. At this time, the poking bar installed in the extension shaft through the mounting ring stirs the wastewater, and the wastewater is stirred by multiple groups of poking bars. The stirring can make the reagent quickly diffuse into the water body and fully contact with the suspended particles and colloidal explosive pollutants. If the stirring is insufficient, the reagent is easy to form a reagent ball locally or the local concentration is insufficient to cause coagulation failure, thereby increasing the filtration burden. In addition, the stirring can ensure that the reagent fully contacts with the solid explosive particles, avoids that the reagent stays on the surface of the water body and cannot act on the settled residues, and affects the safety of subsequent filtration.

[0009] Preferably, the rotating shaft is fixedly installed at the output end of the motor, the mounting ring is provided with four, the four mounting rings are circumferentially distributed on the surface of the extension shaft, and the poking bar is provided in a sawtooth structure. When multiple groups of sawtooth poking bars stir the reagent, the sharp teeth of the sawtooth edges generate strong shearing force on the agglomerated particles in the wastewater during high-speed rotation, which can effectively destroy the particle agglomerates and promote the uniform mixing of the reagent and the particle groups in the wastewater.

[0010] Preferably, the layered filtration assembly comprises an elbow pipe, sleeve pipes are fixedly installed on both sides of the outer surface of the elbow pipe, the sleeve pipes are provided with three groups, the three groups of sleeve pipes are fixedly installed on the surfaces of the sediment discharge assembly and the tank body respectively, inner adhesive rings are fixedly installed in the sleeve pipes, filter screen covers are fixedly installed on the surfaces of the inner adhesive rings, and a supporting frame is fixedly installed at the bottom of the side of the elbow pipe close to the sediment discharge assembly. The mixed wastewater is conveyed into the sediment discharge assembly through the sleeve pipes connected to the outer side of the tank body and the elbow pipe. When the wastewater is conveyed, the activated carbon adsorption blocks in the filter screen cover adsorb the pollutants in the wastewater through the multi-hole structure. The sleeve pipes at both ends of the elbow pipe communicate the tank body and the water storage tank from multiple angles, the filter screen covers are installed in the sleeve pipes at both ends of the elbow pipe, and the filtration efficiency of the wastewater is improved through multi-layer adsorption treatment.

[0011] Preferably, the filtering screen cover comprises a reinforcing frame, the outer surface of the reinforcing frame is fixedly provided with a connecting plate, the outer surface of the connecting plate is fixedly provided with a supporting piece, the inner part of the reinforcing frame is fixedly provided with an inner connecting cover, the supporting piece is fixedly connected with the outer surface of the inner connecting cover, the opposite surfaces of the inner connecting cover are fixedly provided with a screening net, the shaft center of the inner connecting cover is fixedly provided with a driving motor, the outer surface of the driving motor is rotatably provided with a rotating rod, and the outer surface of the rotating rod is sleeved with a stirring rod. The reinforcing frame is provided in a conical structure, the inner connecting cover of the conical reinforcing frame is provided in an inclined manner, the inclined arrangement can avoid the blockage of the sleeve caused by the early precipitation of impurities in the wastewater, the wastewater passes through the inner connecting cover and contacts the activated carbon adsorption block in the inner connecting cover during the wastewater conveying, the driving motor drives the rotating rod and the stirring rod to rotate in the inner connecting cover when the activated carbon adsorption block is clamped, so that the activated carbon adsorption block fully contacts the wastewater, promotes the suspended impurities to be adsorbed to the surface of the carbon, and accelerates the filtration speed.

[0012] Preferably, the reinforcing frame is provided in two groups, the two groups of reinforcing frames are fixedly arranged on the outer surface of the inner connecting ring, the rotating rod is rotatably arranged between the opposite surfaces of the inner connecting cover by the driving motor, and the inner part of the inner connecting cover is filled with activated carbon adsorption blocks.

[0013] Preferably, the sediment pollution discharge assembly comprises a water storage tank, the top of the water storage tank is fixedly provided with a positioning ring plate, and the bottom of the water storage tank is fixedly provided with a sediment pollution discharge pipe. After the adsorption, the wastewater is conveyed to the water storage tank along the sleeve at the bottom of the elbow pipe, and after the standing and precipitation, the precipitates in the wastewater enter the sediment pollution discharge pipe arranged at the bottom of the water storage tank, and the wastewater is conveyed to the electrolytic tower through the drain pipe for subsequent reaction treatment.

[0014] Preferably, the water storage tank is fixedly connected with the sleeve, the sediment pollution discharge pipe is fixedly arranged at the top of the supporting frame, and the sediment pollution discharge pipe is threadedly connected with the sealing cover.

[0015] The application provides a hierarchical explosive high-concentration chemical wastewater treatment equipment. The hierarchical explosive high-concentration chemical wastewater treatment equipment has the following beneficial effects: The acid wastewater and the alkaline wastewater are first conveyed to the uniform stirring treatment assembly, the wastewater is pretreated by the uniform stirring treatment assembly to mix the wastewater, the PH value is reduced through the acid-base neutralization reaction, the toxicity of the nitrobenzene compound to the microorganism is reduced, the mixed wastewater is filtered through the multi-layer filtering assembly, and is collected in the sediment pollution discharge assembly, the suspended matter and the sediment are separated by gravity, the precipitated wastewater is conveyed to the electrolytic tower for subsequent reaction treatment, the filtration treatment of the wastewater in advance can reduce the load of the subsequent treatment process, and the suspended matter can avoid blocking the filler of the micro-electrolytic tower or affecting the activity of the microorganism.

[0016] II. The hierarchical explosive high-concentration chemical wastewater treatment equipment, through the staff to the acidic wastewater and alkaline wastewater through the import pipe to the tank, the wastewater in the tank, due to the solid impurities in explosive wastewater density is usually greater than water, if the residence time is long during the transportation, easy to occur gravity settlement, resulting in wastewater appears upper clear liquid lower concentration residue stratification phenomenon, at the same time, part of the insoluble organic pollutants may form local high concentration of aggregates, distribution is extremely uneven, at this time the staff start hydraulic machine, so that the hydraulic machine execution end drive roller plate in the tank lifting displacement, to the large particle impurities in the wastewater in the tank bottom roller pressure treatment, roller pressure can crush the rock debris, explosive residues and other large particle solid in wastewater, so that its volume is reduced, the surface area is increased, more easily removed by subsequent filtration process, in addition, the roller pressure can reduce the content of suspended solids in wastewater, avoid clogging filter screen or filter cloth, improve the filtration efficiency, after roller pressure treatment, the staff start multiple motor, through the motor output end drive stirring piece in the tank rotation, fast stirring to make acidic wastewater and alkaline wastewater uniform mixing.

[0017] III. The hierarchical explosive high-concentration chemical wastewater treatment equipment, by putting the matching reagent into the wastewater before filtration treatment, the staff start motor, so that the output end of the motor drive the connecting seat installed at the bottom of the rotating shaft, at this time, the stirring bar installed in the extension shaft through the installation ring stirs the wastewater, the wastewater is stirred by multiple stirring bars, the stirring can make the reagent quickly diffuse into the water body and fully contact with the suspended particles and colloidal explosive pollutants, if the stirring is insufficient, the reagent is easy to form a bolus locally or the local concentration is insufficient to cause coagulation failure, which increases the filtration burden, in addition, the stirring can ensure that the reagent fully contacts with the solid explosive particles, avoid the reagent staying on the surface of the water body and failing to act on the settled residue, which affects the safety of subsequent filtration.

[0018] IV. The hierarchical explosive high-concentration chemical wastewater treatment equipment, the mixed wastewater is transported into the sedimentation and pollution discharge assembly through the sleeve and elbow connected outside the tank, the wastewater contacts with the filter screen cover during transportation, the activated carbon adsorption block in the filter screen cover adsorbs the pollutants in the wastewater through its multi-hole structure, the sleeves at both ends of the elbow connect the tank and the water storage tank from multiple angles, the filter screen cover is installed in the sleeve at both ends of the elbow, the wastewater filtration efficiency is improved by multi-layer adsorption treatment.

[0019] V. The hierarchical explosive high-concentration chemical wastewater treatment equipment is provided with a conical structure through a reinforcing frame, the conical reinforcing frame makes the contact surface of the inner cover and the wastewater be inclined, the inclined arrangement can avoid the premature deposition of impurities in the wastewater from causing the blockage of the sleeve, when the wastewater is transported, the wastewater passes through the inner cover and contacts the activated carbon adsorption block in the inner cover, when clamping the activated carbon adsorption block, the driving motor drives the rotating rod and the stirring rod to rotate in the inner cover, so that the activated carbon adsorption block fully contacts the wastewater, promotes the suspended impurities to be adsorbed to the carbon surface, and accelerates the filtration speed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an external structure schematic view of the hierarchical explosive high-concentration chemical wastewater treatment equipment; Figure 2 It is another angle external structure schematic view of the hierarchical explosive high-concentration chemical wastewater treatment equipment; Figure 3 It is a structure schematic view of the uniform stirring treatment assembly; Figure 4 It is an internal structure schematic view of the uniform stirring treatment assembly; Figure 5 It is a structure schematic view of the stirring piece; Figure 6 It is an enlarged structure schematic view of the stirring piece; Figure 7 It is a structure schematic view of the layered filtering assembly; Figure 8 It is a disassembled structure schematic view of the layered filtering assembly; Figure 9 It is a disassembled structure schematic view of the filtering screen cover; Figure 10 It is an internal structure schematic view of the inner cover; Figure 11 It is a disassembled structure schematic view of the stirring rod.

[0021] In the diagram: 1. Sealing cap; 2. Drain pipe; 3. Inlet pipe; 4. Mixing and processing assembly; 41. Top cover; 42. Beam frame; 43. Tank body; 44. Mounting base; 45. Hydraulic press; 46. Mixing component; 461. Rotating shaft; 462. Connecting seat; 463. Extension shaft; 464. Mounting ring; 465. Tapered rod; 466. Actuating bar; 47. Positioning frame; 48. Compactor plate; 49. Motor; 5. Layered filtration Components; 51. Sleeve; 52. Bend; 53. Filter screen cover; 531. Inner cover; 532. Reinforcing frame; 533. Rotating rod; 534. Screening mesh; 535. Connecting plate; 536. Support plate; 537. Stirring rod; 538. Drive motor; 54. Inner ring; 55. Stabilizing support frame; 6. Sedimentation and sewage discharge assembly; 61. Positioning ring plate; 62. Water storage tank; 63. Sewage pipe; 7. Support frame; 8. Valve. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] First embodiment, such as Figures 1 to 11 As shown, the present invention provides a technical solution: a graded high-concentration chemical wastewater treatment device for explosives, comprising: a mixing and treatment component 4, which is used to uniformly mix the agent and the wastewater, and an inlet pipe 3 is fixedly installed on one side of the mixing and treatment component 4; Layered filtration component 5 is used for guiding and conveying mixed wastewater. The layered filtration component 5 is provided in three sets, and the three sets of layered filtration components 5 are distributed in a circumferential shape on the surface of the mixing treatment component 4. The sediment pollution discharge assembly 6 is used for filtering and discharging the wastewater, one side of the outer surface of the sediment pollution discharge assembly 6 is fixedly installed with a drain pipe 2, the top of the sediment pollution discharge assembly 6 is rotatably installed with a valve 8, the bottom of the sediment pollution discharge assembly 6 is fixedly installed with a support frame 7, one side of the outer surface of the sediment pollution discharge assembly 6 is threadedly installed with a sealing cover 1, the sediment pollution discharge assembly 6 and the uniform stirring treatment assembly 4 are arranged on the same central axis, and the uniform stirring treatment assembly 4 is connected with the sediment pollution discharge assembly 6 through the layered filtering assembly 5. When the high-concentration chemical wastewater of the fire explosive is treated, the staff first sends the acidic wastewater and the alkaline wastewater to the uniform stirring treatment assembly 4, the wastewater is pretreated by the uniform stirring treatment assembly 4 to mix the wastewater, the PH value is reduced through the acid-base neutralization reaction, the toxicity of the nitrobenzene compound to the microorganism is reduced, the mixed wastewater is filtered through the layered filtering assembly 5, and the wastewater is collected in the sediment pollution discharge assembly 6, the suspended matter and the sediment are separated through gravity, the wastewater after the sedimentation is sent to the electrolytic tower for subsequent reaction treatment, the wastewater is pretreated and filtered, the load of the subsequent treatment process can be reduced, and the suspended matter can be prevented from blocking the filler of the micro-electrolysis tower or affecting the microbial activity.

[0024] The sediment pollution discharge assembly 6 comprises a water storage tank 62, the top of the water storage tank 62 is fixedly installed with a positioning ring plate 61, and the bottom of the water storage tank 62 is fixedly installed with a sediment pollution discharge pipe 63. The wastewater after the adsorption is sent to the water storage tank 62 along the sleeve pipe 51 at the bottom of the elbow pipe 52, the sediment in the wastewater is separated after the standing and the sediment is sent to the sediment pollution discharge pipe 63 at the bottom of the water storage tank 62, and the wastewater is sent to the electrolytic tower through the drain pipe 2 for subsequent reaction treatment.

[0025] The water storage tank 62 is fixedly connected with the sleeve pipe 51, the sediment pollution discharge pipe 63 is fixedly installed at the top of the support frame 7, and the sediment pollution discharge pipe 63 is threadedly connected with the sealing cover 1.

[0026] The second embodiment is based on the first embodiment, please refer to Figures 3 to 6As shown, the uniform stirring processing assembly 4 comprises a tank body 43, a top cover 41 is installed at the top of the tank body 43, a beam frame 42 is fixedly installed at the middle of the inside of the top cover 41, an installation seat 44 is fixedly installed at the bottom of the beam frame 42, a hydraulic machine 45 is fixedly installed at the bottom of the installation seat 44, a rolling plate 48 is fixedly installed at the execution end of the hydraulic machine 45, a positioning frame 47 is fixedly installed on the outer surface of the hydraulic machine 45, a motor 49 is fixedly installed in the inside of the positioning frame 47, and a stirring piece 46 is fixedly installed at the output end of the motor 49. The workers transport the acidic wastewater and the alkaline wastewater into the tank body 43 through the inlet pipe 3. The wastewater is in the tank body 43. Because the density of the solid impurities in the explosive wastewater is usually greater than that of water, if the residence time is long during the standing or transportation process, gravity settling is easy to occur, which leads to the stratification phenomenon of the wastewater, that is, the upper clear liquid and the lower thick residue, and at the same time, part of the insoluble organic pollutants may form a local high-concentration aggregate with extremely uneven distribution. At this time, the workers start the hydraulic machine 45, so that the execution end of the hydraulic machine 45 drives the rolling plate 48 to ascend and descend in the tank body 43, so as to perform rolling treatment on the large-particle impurities in the wastewater settled at the bottom of the tank body 43. The rolling can crush the large-particle solids such as rock debris and explosive residues in the wastewater, so that the volume is reduced and the surface area is increased, which is more easy to be removed through the subsequent filtration process. In addition, the rolling can reduce the content of suspended solids in the wastewater, avoid clogging the filter screen or filter cloth, and improve the filtration efficiency. After the rolling treatment, the workers start a plurality of motors 49, and drive the stirring piece 46 to rotate in the tank body 43 through the output end of the motor 49, so as to quickly stir the acidic wastewater and the alkaline wastewater to uniformly mix.

[0027] The positioning frame 47 is provided with three, three positioning frames 47 are circumferentially distributed on the outside of the hydraulic machine 45, the tank body 43 is fixedly connected with the stratified filtration assembly 5, and the stirring piece 46 is rotatably installed in the cavity of the tank body 43 through the motor 49.

[0028] The stirring piece 46 comprises a rotating shaft 461, the bottom of the rotating shaft 461 is rotatably installed with a connecting seat 462, the bottom of the connecting seat 462 is fixedly installed with an extension shaft 463, the bottom of the extension shaft 463 is fixedly installed with a tapered rod 465, the outer surface of the extension shaft 463 is fixedly installed with a mounting ring 464, and the inside of the mounting ring 464 is fixedly installed with a poking strip 466. Before the filtration treatment, the staff starts the motor 49 to drive the connecting seat 462 installed at the bottom of the rotating shaft 461 to rotate, and the poking strip 466 installed in the extension shaft 463 through the mounting ring 464 stirs the wastewater, and the wastewater is stirred by multiple groups of poking strips 466. The stirring can make the reagent quickly diffuse into the water body, fully contact with the suspended particles and colloidal explosive pollutants. If the stirring is insufficient, the reagent is easy to form a reagent ball in a local area, or the local concentration is insufficient to cause coagulation failure, thereby increasing the filtration burden. In addition, the stirring can ensure that the reagent fully contacts with the solid explosive particles, avoids that the reagent stays on the surface of the water body and cannot act on the settled residues, and affects the safety of subsequent filtration.

[0029] The rotating shaft 461 is fixedly installed on the output end of the motor 49, the mounting ring 464 is provided with four, the four mounting rings 464 are circumferentially distributed on the surface of the extension shaft 463, and the poking strip 466 is provided in a sawtooth structure. When multiple groups of sawtooth poking strips 466 stir the reagent, the sawtooth edges generate strong shearing force on the agglomerated particles in the wastewater through sharp teeth when rotating at high speed, which can effectively destroy the particle agglomerates and promote the reagent to uniformly mix with the particle groups in the wastewater.

[0030] In the third embodiment, on the basis of the first and second embodiments, referring to Figures 7 to 11 As shown in the figure, the layered filtration assembly 5 comprises an elbow pipe 52, both sides of the outer surface of the elbow pipe 52 are fixedly installed with sleeve pipes 51, the sleeve pipes 51 are provided with three groups, the three groups of sleeve pipes 51 are fixedly installed on the surface of the sediment and pollution discharge assembly 6 and the tank body 43 respectively, the inside of the sleeve pipe 51 is fixedly installed with an inner adhesive ring 54, the surface of the inner adhesive ring 54 is fixedly installed with a filter screen cover 53, and the bottom of the side of the elbow pipe 52 close to the sediment and pollution discharge assembly 6 is fixedly installed with a supporting frame 55. The mixed wastewater is conveyed into the sediment and pollution discharge assembly 6 through the sleeve pipes 51 and the elbow pipe 52 connected to the outside of the tank body 43, and contacts with the filter screen cover 53 during the conveying of the wastewater. The activated carbon adsorption block in the filter screen cover 53 adsorbs the pollutants in the wastewater through the multi-hole structure, the sleeve pipes 51 at both ends of the elbow pipe 52 communicate the tank body 43 and the water storage tank 62 from multiple angles, the filter screen cover 53 is installed in the sleeve pipes 51 at both ends of the elbow pipe 52, and the filtration efficiency of the wastewater is improved through multi-layer adsorption treatment.

[0031] The filter screen cover 53 comprises a reinforcing frame 532, the outer surface of the reinforcing frame 532 is fixedly provided with a connecting plate 535 on the side, the outer surface of the connecting plate 535 is fixedly provided with a supporting piece 536 on both sides, the inside of the reinforcing frame 532 is fixedly provided with an inner connecting cover 531, the supporting piece 536 is fixedly connected to the side of the outer surface of the inner connecting cover 531, the opposite surfaces of the inner connecting cover 531 are fixedly provided with a screening net 534, the shaft center of the inner connecting cover 531 is fixedly provided with a driving motor 538, the outer surface of the driving motor 538 is rotatably provided with a rotating rod 533, and the outer surface of the rotating rod 533 is sleeved with a stirring rod 537. The reinforcing frame 532 is provided in a conical structure, so that the contact surface of the inner connecting cover 531 and the wastewater is inclined, which can avoid the blockage of the sleeve 51 caused by the early deposition of impurities in the wastewater. When the wastewater is transported, the wastewater passes through the inner connecting cover 531 and contacts the activated carbon adsorption block in the inner connecting cover 531. When clamped with the activated carbon adsorption block, the driving motor 538 drives the rotating rod 533 and the stirring rod 537 to rotate in the inner connecting cover 531, so that the activated carbon adsorption block is in full contact with the wastewater, and the suspended impurities are adsorbed to the surface of the carbon, thereby accelerating the filtering speed.

[0032] The reinforcing frame 532 is provided in two groups, and the two groups of reinforcing frames 532 are fixedly installed on the outer surfaces of the inner adhesive rings 54. The rotating rod 533 is rotatably installed between the opposite surfaces of the inner connecting cover 531 by the driving motor 538. The inside of the inner connecting cover 531 is filled with activated carbon adsorption blocks.

[0033] In use, when the high-concentration chemical wastewater of fire explosive is treated, the staff first transports the acidic wastewater and the alkaline wastewater into the uniform stirring treatment assembly 4, pretreats the wastewater by the uniform stirring treatment assembly 4 to mix the wastewater, reduces the PH value through the acid-base neutralization reaction, reduces the toxicity of the nitrobenzene compound to the microorganism, and collects the mixed wastewater in the sedimentation and pollution discharge assembly 6 after multi-layer filtration of the layered filtration assembly 5. The suspended matter and the sediment are separated by gravity. The pretreated wastewater is transported into the electrolytic tower for subsequent reaction treatment. The filtration treatment of the wastewater can reduce the load of the subsequent treatment process and avoid the blockage of the micro-electrolytic tower filler or the influence on the microbial activity of the suspended matter.

[0034] The staff transports the acidic wastewater and the alkaline wastewater into the tank body 43 through the guide pipe 3. The wastewater is in the tank body 43. Because the density of the solid impurities in the explosive wastewater is generally greater than water, if the residence time is long during the standing or conveying process, gravity sedimentation is easy to occur, causing the wastewater to appear the stratification phenomenon of the upper clear liquid and the lower thick residue. At the same time, part of the insoluble organic pollutants may form a local high-concentration aggregate with extremely uneven distribution. At this time, the staff starts the hydraulic machine 45, so that the hydraulic machine 45 executes the end to drive the rolling plate 48 to ascend and descend in the tank body 43, to perform the rolling treatment on the large-particle impurities in the wastewater that is deposited at the bottom of the tank body 43. The rolling can crush the large-particle solids such as rock debris and explosive residues in the wastewater, so that the volume is reduced and the surface area is increased, which is more easy to be removed through the subsequent filtration process. In addition, the rolling can reduce the content of suspended solids in the wastewater, avoid clogging the filter screen or filter cloth, and improve the filtration efficiency. After the rolling treatment, the staff starts the multiple motors 49, to drive the stirring part 46 to rotate in the tank body 43 through the output end of the motor 49, to quickly stir to uniformly mix the acidic wastewater and the alkaline wastewater.

[0035] Before the filtration treatment, it is necessary to put the matching reagent into the wastewater. The staff starts the motor 49, to drive the connecting seat 462 installed at the bottom of the rotating shaft 461 to rotate through the output end of the motor 49. At this time, the stirring bars 466 installed in the extension shaft 463 through the mounting ring 464 stir the wastewater. The stirring bars 466 stir the wastewater. The stirring can make the reagent quickly diffuse into the water body and fully contact with the suspended particles and colloidal explosive pollutants. If the stirring is insufficient, the reagent is easy to form a reagent ball locally with excessive amount, or the local concentration is insufficient to cause the coagulation failure, which increases the filtration burden. In addition, the stirring can ensure that the reagent fully contacts with the solid explosive particles, avoids that the reagent stays only on the surface of the water body and cannot act on the settled residue, and affects the safety of the subsequent filtration.

[0036] When the multiple sawtooth stirring bars 466 stir the put reagent, the sawtooth edges generate strong shearing force on the agglomerated particles in the wastewater through the sharp teeth during high-speed rotation, which can effectively destroy the particle agglomerates and promote the uniform mixing of the reagent and the particle groups in the wastewater.

[0037] The wastewater after the mixing treatment is transported into the sedimentation and pollution discharge assembly 6 through the sleeve pipes 51 and the elbow pipes 52 connected to the outside of the tank body 43. The wastewater contacts with the filter screen cover 53 during the conveying of the wastewater. The activated carbon adsorption blocks in the filter screen cover 53 adsorb the pollutants in the wastewater through the multi-hole structure. The sleeve pipes 51 at both ends of the elbow pipe 52 communicate the tank body 43 and the water storage tank 62 from multiple angles. The filter screen covers 53 are installed in the sleeve pipes 51 at both ends of the elbow pipe 52. The multiple layers of adsorption treatment improve the filtration efficiency of the wastewater.

[0038] The reinforcing frame 532 is arranged in a conical structure, and the conical reinforcing frame 532 makes the contact surface of the inner contact cover 531 with the wastewater be arranged in an inclined manner, which can avoid the premature deposition of impurities in the wastewater from causing the sleeve 51 to be blocked. When the wastewater is transported, the wastewater passes through the inner contact cover 531 and contacts the activated carbon adsorption block in the inner contact cover 531, and when the activated carbon adsorption block is clamped, the driving motor 538 drives the rotating rod 533 and the stirring rod 537 to rotate in the inner contact cover 531, so that the activated carbon adsorption block is in full contact with the wastewater, promotes the suspended impurities to be adsorbed to the surface of the carbon, and accelerates the filtration speed.

[0039] The wastewater after adsorption is transported along the sleeve 51 at the bottom of the elbow pipe 52 to the water storage tank 62, and after standing and depositing, the precipitate in the wastewater enters the sediment discharge pipe 63 installed at the bottom of the water storage tank 62, and the wastewater is transported to the electrolysis tower through the drain pipe 2 for subsequent reaction treatment.

[0040] It should be noted that, in this document, the terms such as first and second are used merely 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 such entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element.

[0041] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A graded wastewater treatment device for high-concentration chemical wastewater from explosives, characterized in that, Include: The uniform treatment assembly (4) is used for uniform mixing of the medicament and wastewater, and the surface of one side of the uniform treatment assembly (4) is fixedly provided with the inlet pipe (3); The layered filtering assembly (5) is used for conveying the mixed wastewater, and three groups of the layered filtering assembly (5) are circumferentially distributed on the surface of the uniform treatment assembly (4); The sediment discharge assembly (6) is used for discharging the filtered wastewater, and the outer surface of one side of the sediment discharge assembly (6) is fixedly provided with the drain pipe (2); the top of the sediment discharge assembly (6) is rotatably provided with the valve (8); the bottom of the sediment discharge assembly (6) is fixedly provided with the support frame (7); the outer surface of one side of the sediment discharge assembly (6) is threadedly provided with the sealing cover (1); the sediment discharge assembly (6) and the uniform treatment assembly (4) are arranged on the same central axis, and the uniform treatment assembly (4) is connected with the sediment discharge assembly (6) through the layered filtering assembly (5).

2. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 1, characterized in that: The uniform treatment assembly (4) comprises a tank body (43), the top of the tank body (43) is provided with a top cover (41), the middle of the inside of the top cover (41) is fixedly provided with a beam frame (42), the bottom of the beam frame (42) is fixedly provided with a mounting seat (44), the bottom of the mounting seat (44) is fixedly provided with a hydraulic machine (45), the execution end of the hydraulic machine (45) is fixedly provided with a rolling plate (48), the outer surface of the hydraulic machine (45) is fixedly provided with a positioning frame (47), the inside of the positioning frame (47) is fixedly provided with a motor (49), and the output end of the motor (49) is fixedly provided with a stirring part (46).

3. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 2, characterized in that: The positioning frame (47) is provided with three positioning frames (47), and the three positioning frames (47) are circumferentially distributed on the outer side of the hydraulic machine (45); the tank body (43) is fixedly connected with the layered filtering assembly (5); and the stirring part (46) is rotatably installed in the cavity of the tank body (43) through the motor (49).

4. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 3, characterized in that: The stirring part (46) comprises a rotating shaft (461), the bottom of the rotating shaft (461) is rotatably provided with a connecting seat (462), the bottom of the connecting seat (462) is fixedly provided with an extension shaft (463), the bottom of the extension shaft (463) is fixedly provided with a tapered rod (465), the outer surface of the extension shaft (463) is fixedly provided with a mounting ring (464), and the inside of the mounting ring (464) is fixedly provided with a poking bar (466).

5. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 4, characterized in that: The rotating shaft (461) is fixedly installed at the output end of the motor (49); the mounting ring (464) is provided with four mounting rings (464), and the four mounting rings (464) are circumferentially distributed on the surface of the extension shaft (463); and the poking bar (466) is provided in a sawtooth structure.

6. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 1, characterized in that: The layered filtering assembly (5) comprises a bend pipe (52), both sides of the outer surface of the bend pipe (52) are fixedly installed with sleeve pipes (51), the sleeve pipes (51) are provided with three groups, the three groups of sleeve pipes (51) are fixedly installed on the surface of the sediment pollution discharge assembly (6) and the tank body (43) respectively, the interiors of the sleeve pipes (51) are fixedly installed with inner adhesive rings (54), the surface of the inner adhesive ring (54) is fixedly installed with a filtering screen cover (53), and the bottom of the side of the bend pipe (52) close to the sediment pollution discharge assembly (6) is fixedly installed with a supporting frame (55).

7. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 6, characterized in that: The filtering screen cover (53) comprises a reinforcing frame (532), the edge side of the outer surface of the reinforcing frame (532) is fixedly installed with a connecting plate (535) except that the connecting plate (535) is fixedly installed with a supporting piece (536) on both sides of the outer surface of the connecting plate (535), the interior of the reinforcing frame (532) is fixedly installed with an inner connecting cover (531), the edge sides of the outer surfaces of the supporting piece (536) and the inner connecting cover (531) are fixedly connected, the opposite surfaces of the inner connecting cover (531) are fixedly installed with a screening net (534), the shaft center of the inner connecting cover (531) is fixedly installed with a driving motor (538), the outer surface of the driving motor (538) is rotatably installed with a rotating rod (533), and the outer surface of the rotating rod (533) is sleeved with a stirring rod (537).

8. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 7, characterized in that: The reinforcing frame (532) is provided with two groups, the two groups of reinforcing frames (532) are fixedly installed on both sides of the outer surface of the inner adhesive ring (54), the rotating rod (533) is rotatably installed between the opposite surfaces of the inner connecting cover (531) through the driving motor (538), and the interior of the inner connecting cover (531) is filled with activated carbon adsorption blocks.

9. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 1, characterized in that: The sediment pollution discharge assembly (6) comprises a water storage tank (62), the top of the water storage tank (62) is fixedly installed with a positioning ring plate (61), and the bottom of the water storage tank (62) is fixedly installed with a sediment pollution discharge pipe (63).

10. The hierarchical explosive high-concentration chemical wastewater treatment equipment according to claim 9, characterized in that: The water storage tank (62) is fixedly connected with the sleeve pipe (51), the sediment pollution discharge pipe (63) is fixedly installed on the top of the supporting frame (7), and the sediment pollution discharge pipe (63) is threadedly connected with the sealing cover (1).

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