136 results about "Electroplating wastewater" patented technology

The invention discloses a complex-containing electroplating wastewater treatment method, and belongs to the technical field of sewage treatment engineering, and the complex-containing electroplating wastewater treatment method comprises the following steps: S1, introducing complex-containing electroplating wastewater into an adjusting tank for homogenization and impurity removal; s2, carrying out complex breaking treatment on the homogeneous and impurity-removed complex-containing electroplating wastewater through a multi-source catalytic oxidation complex breaking unit; s3, the pH is adjusted, impurities in the complexed electroplating wastewater are moderately precipitated, then the complexed electroplating wastewater is filtered through a coagulation microfiltration membrane assembly, and a metal liquid phase is obtained; s4, after being fed into a resin recovery unit, eluting, and finally recovering valuable metals through an electro-deposition tank or a resin coupling evaporation concentration unit; s5, feeding the wastewater into a guarantee reaction sedimentation tank for oxidation reaction and coagulation reaction to obtain primarily treated wastewater; and S6, mixing the primarily treated wastewater, and treating the wastewater in an evaporation recycling system to obtain standard wastewater and industrial salt. According to the invention, heavy metal complexes in the electroplating wastewater can be effectively broken, and efficient recovery of heavy metals and reuse of wastewater reaching the standard are realized.

The invention discloses an electroplating wastewater treatment decision-making system based on multi-modal data analysis, relates to the technical field of wastewater treatment, and aims to solve the problems that in the prior art, due to the lack of synchronous acquisition and analysis capability for multi-source heterogeneous data, the system is often difficult to find water quality fluctuation, equipment abnormity, process deviation and the like in time. A processing decision-making platform is taken as a core, and a multi-modal data acquisition and analysis unit, a multi-factor dynamic analysis unit and a resource scheduling analysis unit are linked to form a closed-loop decision-making process of data acquisition-dynamic analysis-resource scheduling; the processing decision platform is used as a center, triggers each unit to execute a task by sending a control signal, receives an analysis signal fed back by each unit, and outputs a final decision (such as parameter adjustment and process regulation and control) according to the signal content; the three units are clear in division of labor, data synchronous verification, medicament dynamic optimization and resource load matching are achieved in sequence, and it is ensured that the processing process is accurate, efficient and stable.

The present application belongs to the technical field of wastewater treatment, and discloses a method for treating electroplating wastewater by using bioreduction of biogas slurry and combined iron bio-oxidation, which is a secondary combined use technology for removing various heavy metals in electroplating wastewater by iron bio-oxidation, comprising the following steps: (1) collecting fermentation biogas slurry, and performing ultraviolet irradiation sterilization after aeration; (2) adding potassium dichromate solution and fresh nutrient solution to the sludge system, and culturing anaerobic sludge; (3) adding treated biogas slurry to the anaerobic sludge, and repeatedly domesticating chromium-reducing microorganisms; (4) configuring a mixed solution of comprehensive electroplating wastewater and biogas slurry according to a certain proportion; (5) building a primary treatment biological reactor, and reducing Cr(VI) in wastewater by anaerobic biological reduction under the promotion of pyrite; and (6) building a secondary biological reactor filled with straw biomass charcoal, and generating iron oxides under the action of functional bacteria to continue adsorbing Cd, Cu and Ni ions in wastewater.

The invention relates to the technical field of wastewater treatment, in particular to electroplating wastewater treatment equipment and method.The electroplating wastewater treatment equipment comprises a concrete bottom plate prefabricated on the ground, a plurality of bottom beams are fixedly installed on the concrete bottom plate through bolts, and a plurality of stand columns are fixedly installed on the bottom beams through bolts; two limiting strips are arranged on the same side face of the stand column. A limiting groove is formed between the two limiting strips, an assembly plate body is clamped in the limiting groove, each limiting strip comprises a fixed part fixed to the corresponding stand column and a rotating part arranged at the lower end, each rotating part is rotationally connected to the corresponding fixed part and abuts against the assembly plate body in the corresponding limiting groove, and the length of each rotating part is the same as the height of the assembly plate body; and when the rotating part does not limit the lowermost assembly plate body any more, the corresponding assembly plate body is taken out from the position corresponding to the lowermost rotating part, and the upper assembly plate body is pushed to move downwards. The assembly plate has the effect that the assembly plate body is convenient to replace.

The utility model provides a kind of electroplating wastewater hexavalent chromium reduction automatic dosing control device, including pH adjusting pool, reduction reaction pool, sampling pump, video recognition system, control assembly, dosing pump and dosing tank;Reduction reaction pool is connected after pH adjusting pool;Sampling pump is connected with reduction reaction pool by sampling pipeline, and video recognition system is connected after sampling pump, and video recognition system is reconnected to reduction reaction pool by reflux pipeline after video recognition system;Video recognition system is connected with control assembly, and control assembly is connected with dosing device, so that control assembly controls dosing device according to video recognition system signal.The utility model uses video recognition system to replace ORP controller, without accurate control wastewater pH value.

The application relates to the technical field of sampling devices, and specifically discloses a sampling device for electroplating wastewater, which comprises an adjusting tank, water outlets are communicated with the upper, middle and lower liquid surfaces of the adjusting tank, water valves are arranged at the ends of the water outlets close to the upper, middle and lower liquid surfaces of the adjusting tank, sampling pipes are communicated with the ends of the water outlets away from the adjusting tank, sampling valves are arranged on the sampling pipes, sampling boxes are arranged at the ends of the sampling pipes away from the water outlets, sampling mechanisms are arranged in the sampling boxes, the water valve at the upper liquid surface of the adjusting tank is opened, the sampling valve is opened, the electroplating wastewater can flow into the sampling pipes through the water outlets, the sampling mechanisms can respectively sample the electroplating wastewater at the upper, middle and lower liquid surfaces of the adjusting tank, and the samples can be stored in the sampling boxes, and then the sampling of the middle and lower liquid surfaces is sequentially carried out after the sampling is completed, so that the electroplating wastewater in the adjusting tank is subjected to layered sampling, the accuracy and comprehensiveness of the samples are improved, and the process control accuracy is improved.

The application belongs to the technical field of electroplating wastewater treatment, and particularly relates to a method and device for treating electroplating wastewater by electrolysis-oxidation coordination. The electroplating wastewater is adjusted and matched to obtain pretreated wastewater, and the electroplating wastewater contains heavy metal elements; the pretreated wastewater is separated by a charged nanofiltration membrane to obtain complex heavy metal wastewater and ionic heavy metal wastewater; the complex heavy metal wastewater is treated by ozone oxidation to obtain oxidized wastewater, and the oxidized wastewater is treated by first diaphragm electrolysis to recover heavy metals; and the ionic heavy metal wastewater is treated by second diaphragm electrolysis to recover heavy metals. The application realizes efficient separation and resource recovery of copper and nickel in the electroplating wastewater, and combines electroplating wastewater treatment and resource recovery, thus having a wide application prospect.

This utility model discloses a device for efficiently removing COD from electroplating wastewater, relating to the field of electroplating wastewater treatment technology. It includes a base with a reaction tank fixedly connected to the top. The beneficial effects of this utility model are as follows: Oxidizing agents or coagulants from the storage tank can be input into the spray tank via a delivery pipe and a pump. While the stirring rollers rotate, the oxidizing agents or coagulants are continuously sprayed into the reaction tank through the spray tank, causing the wastewater to react uniformly. This destabilizes and coagulates the tiny suspended particles, colloids, and some dissolved organic matter in the wastewater into larger flocs. Through the coordinated operation of the air inlet pipe, jet nozzle, and air pump, the reaction tank is continuously injected with air. The air bubbles adsorb the coagulated flocs, and the upward force of the gas causes the flocs to float on the wastewater surface. Finally, a scraper removes the flocs into the storage tank.

The utility model discloses an electroplating wastewater treatment pond, which relates to the technical field of electroplating wastewater treatment and comprises a wastewater pond and a movable stirring mechanism, and the stirring mechanism comprises a scraping frame, a rotating shaft, a stirring rod, a portal frame, an air blower and a medicament barrel; the scraping frame is positioned in the wastewater pool and is attached to the inner wall of the wastewater pool; the number of the rotating shafts is two, and the two ends of each rotating shaft are of an open hollow structure. The two rotating shafts are vertically arranged in the scraping frame, the stirring rods are longitudinally arranged on the outer walls of the rotating shafts, the stirring rods on the two rotating shafts are arranged in a staggered mode, and the upper ends of the rotating shafts penetrate through the portal frame and are rotationally connected with the portal frame; the air blower and the medicament barrel are both located above the portal frame, and a filter pipe is arranged at the output end of the air blower; the reaction speed of the additive and pollutants in the electroplating wastewater is increased, the reaction liquid contact surface in the tank body is effectively increased, the treatment efficiency of the electroplating wastewater is improved, and dirt and impurities attached to the inner wall of the wastewater tank are easy to treat.

The application relates to the technical field of electroplating wastewater treatment, and particularly discloses a pretreatment device applied to an electroplating wastewater treatment equipment, which comprises a supporting mechanism, a wastewater treatment mechanism, a water pumping mechanism and a screw rod driving mechanism are arranged on the supporting mechanism respectively; the water pumping mechanism and the screw rod driving mechanism are arranged on the two sides of the wastewater treatment mechanism respectively. The electroplating wastewater can be accommodated in the treatment tank in the wastewater treatment mechanism, the wastewater can be injected into the treatment tank through a water inlet interface, and the medicament can be injected into the treatment tank through a feeding interface, so that the heavy metal ions are removed and the acid-base solution is added; the rotation of the stirring shaft driven by the stirring motor can make the stirring blades stir the mixed solution of the wastewater and the medicament, so that the reaction effect is improved; after the stirring is completed, the precipitation and the layered treatment of the treated water are carried out through standing.

The application relates to the technical field of wastewater treatment, in particular to a plating wastewater treatment equipment and a treatment method, which comprises a concrete bottom plate prefabricated on the ground, a plurality of bottom beams are fixedly installed on the concrete bottom plate through bolts, a plurality of stand columns are fixedly installed on the bottom beams through bolts, and two limiting strips are arranged on the same side of the stand columns; a limiting groove is formed between the two limiting strips, an assembly plate body is clamped in the limiting groove, the limiting strip comprises a fixed part fixed on the stand column and a rotating part arranged at the lower end, the rotating part is rotationally connected to the fixed part, the rotating part abuts against the assembly plate body in the limiting groove, the length of the rotating part is the same as the height of the assembly plate body, when the rotating part no longer limits the lowermost assembly plate body, the corresponding assembly plate body is taken out from the position corresponding to the lowermost rotating part, and the upper assembly plate body is pushed to move downwards. The application has the effect of conveniently replacing the assembly plate body.

The application provides a metal recovery device in electroplating wastewater, and relates to the technical field of electroplating wastewater treatment.The metal recovery device comprises a recovery tank, at least one storage cylinder assembly and two barrier agitation structures.The recovery tank is respectively provided with an inlet end and an outlet end on both sides, and a recovery discharge part is arranged at the center of the bottom wall.Two symmetrical material guiding slopes are arranged on the inner bottom wall.The barrier agitation structures are slidably arranged on the upper frame body, and are driven by an agitation driving assembly to move synchronously and reversely.The barrier agitation structures trigger flocculating agent feeding and agitate waste liquid synchronously when moving below the storage cylinder assembly.The bottom of the barrier agitation structures contacts with the material guiding slopes to form a barrier when moving to both ends of the recovery tank.The metal recovery device realizes linkage of intermittent flocculating agent feeding and waste liquid agitation through reciprocating movement of the barrier agitation structures, and automatically blocks metal precipitates when discharging liquid, so that the metal recovery rate and the precipitate collection efficiency are effectively improved, and the structure is compact and convenient to operate.

This invention discloses a nitrogen-sulfur co-doped multi-chamber carbon-supported copper nanocluster composite material and its preparation method. By integrating polyether F127, 2,6-diaminopyridine, sodium dodecylbenzenesulfonate, fulvic acid, and copper acetate (II), a semi-open and surface-fully embedded copper cluster multi-chamber carbon was successfully constructed. The surface of this multi-chamber carbon is rich in -NH2 and -SO3. ‑ With abundant active groups, it not only boasts a large specific surface area and ample adsorption sites, but also exhibits excellent anti-interference and wide pH adaptability. As an environmentally friendly material, it can simultaneously and efficiently adsorb and remove Cu²⁺ from electroplating wastewater. + Ni² + Pb² + Cd² + It contains heavy metals and organic complexing agents such as ethylenediaminetetraacetic acid (EDTA) and hydroxyethylidene diphosphonic acid (HEDDI). After electroplating wastewater treatment, it achieves convenient solid-liquid separation and recovery through centrifugation and filtration. After acid washing and alcohol washing regeneration, it exhibits excellent cycle stability. With its superior purification efficiency and recycling advantages, it has shown promising development potential in the field of electroplating wastewater treatment.

The utility model relates to the technical field of wastewater treatment equipment, in particular to electroplating wastewater treatment equipment which comprises a cage lifting grating, an adjusting box, a cyanide breaking reaction tank and a comprehensive adjusting tank, a lifting cage grating is placed on the inner wall of the adjusting box through a hook, one side of the adjusting box is connected with a cyanide breaking reaction tank through a water pump and a water pipe, and one side of the cyanide breaking reaction tank is connected with a comprehensive adjusting tank through a water pump and a water pipe. According to the electroplating wastewater treatment equipment, it is ensured that the SDI value can meet the water inlet requirement of the DTRO filter through the multi-medium filter, a reducing agent and an antisludging agent are added into the pipeline mixer, it is ensured that no residual chlorine enters the DTRO filter, it is ensured that no particulate matter larger than 5 micrometers enters the DTRO filter through the security filter, wastewater is fed into the DTRO filter through the plunger pump, and COD, COD and the DTRO filter are subjected to chemical vapor deposition. Pollutants such as heavy metals are separated and removed under the action of the semipermeable membrane, so that the electroplating wastewater treatment equipment performs automatic treatment.

The application discloses the technical field of electroplating wastewater treatment high-value metal recovery system for electroplating wastewater, including electrolytic cell and electrolytic mechanism, electrolytic cell is connected with infusion tube, infusion tube is connected with electronic flowmeter, electrolytic cell top is detachably connected with cover body, cover body is provided with observation ring groove, cover body is fixedly connected with camera unit; The inside lower side of the electrolytic cell is provided with a sedimentation plate and a stirring unit, the sedimentation plate is in sliding fit with the inner side wall of the electrolytic cell, the bottom of the electrolytic cell is fixedly connected with a first weighing sensor, and the detection end of the first weighing sensor is in abutment with the bottom of the sedimentation plate; The electrolytic mechanism includes a controller, a driving unit, an adjusting unit and an electrolytic unit. The application reduces the generation of concentration polarization and activation polarization phenomenon in the process of electroplating wastewater metal treatment and recovery, recovers the wastewater metal in an efficient state, estimates the treatment and recovery effect of the wastewater metal, and improves the qualified rate of wastewater metal treatment and recovery.

The utility model discloses a wastewater treatment device based on a magnetic adsorbent, and aims to solve the problems that the existing electroplating wastewater treatment difficulty is high and the magnetic adsorbent is difficult to recover. According to the wastewater treatment device based on the magnetic adsorbent, a tank body of an adsorption reaction tank is cylindrical, a water decanter is arranged in the adsorption reaction tank, a first electromagnet device is arranged at the lower part of the cylindrical tank body of the adsorption reaction tank, and a second electromagnet device is arranged at the inverted conical tank bottom of the adsorption reaction tank; a first water outlet of the raw water tank is communicated with the adsorption reaction tank through a first water pipe, one end of a second water pipe is communicated with a second water outlet of the raw water tank, the other end of the second water pipe is communicated with a water inlet of the adsorption reaction tank, and a water injector is arranged on the second water pipe. Based on the magnetic separation characteristic of the magnetic composite adsorbent, the adsorption-magnetic separation reactor is designed, heavy metal wastewater is effectively treated, and meanwhile efficient separation and concentration of the magnetic biological adsorbent can be achieved through the electromagnet.

The application discloses an electroplating wastewater treatment equipment and a treatment process thereof. The electroplating wastewater treatment equipment comprises a coagulation reaction tank and an inclined plate sedimentation tank. The inclined plate sedimentation tank comprises a main body part and a hopper part. The hopper part is located below the main body part. A partition wall plate separates the space inside the main body part into a water inlet area and an inclined plate sedimentation area. An inclined plate assembly is arranged in the inclined plate sedimentation area. The top of the main body part corresponding to the inclined plate sedimentation area is provided with a clear liquid drainage pipe. The bottom of the hopper part is provided with a blowdown pipe. The blowdown pipe is provided with a blowdown switch valve. The inclined plate sedimentation tank is provided with a movable partition plate and a lifting mechanism. The lifting mechanism comprises a lifting driving element and a traction rope. The lifting driving element lifts the movable partition plate through the traction rope. The inner peripheral wall of the hopper part is provided with a stepped surface. When the movable partition plate is located at the lower limit position, the plate surface of the movable partition plate faces vertically, and the peripheral side edge of the movable partition plate abuts against the stepped surface. The application can reduce the discharge of excessive water along with the sludge under the premise that the inclined plate sedimentation tank can discharge the sludge as soon as possible.

The utility model provides an electroplating wastewater reaction tank stirring device which comprises a linear mechanism transversely arranged between a pair of strip-shaped supporting plates, and the moving direction of the movable end of the linear mechanism is perpendicular to the strip-shaped supporting plates; the multiple stirring rods are vertically arranged, the multiple stirring rods are rotationally connected with the movable end of the linear mechanism, gears are coaxially connected to the tops of the peripheral sides of the stirring rods, the multiple gears are in engaged connection with the multiple racks correspondingly, and the racks are fixed between the pair of strip-shaped supporting plates. The device can simultaneously drive a plurality of stirring rods to rotate through one power source.

This invention provides a wastewater treatment system and a process system for the resource recovery of water and salt from electroplating wastewater, belonging to the field of wastewater treatment technology. The wastewater treatment system provided by this invention includes a wastewater pretreatment unit, a wastewater solid-liquid separation unit, a wastewater oxidation unit, a wastewater biochemical treatment unit, a wastewater multivalent metal ion removal unit, and a membrane treatment system, connected in sequence. In the wastewater treatment system provided by this invention, the total amount of divalent and higher-valent metal ions in the effluent from the multivalent metal ion removal unit is ≤5 ppm, with the total amount of multivalent metal ions ≤2 ppm, and calcium and magnesium ≤5 ppm. The significantly reduced multivalent metal ion content avoids fouling of the subsequent membrane system, thereby effectively ensuring the reuse of water resources and maximizing the value of salt resources in subsequent process systems.

The invention discloses a circular treatment method of high-fluorine mother liquor, and relates to the technical field of electroplating wastewater treatment. The method comprises the following steps: firstly, mixing and diluting the MVR mother liquor and chromium-containing raw water according to a volume ratio of 1: (250-500); then, chemicals such as aluminum sulfate, PAC and PAM are added for physicochemical treatment, COD and fluoride are removed, and hardness is improved; carrying out deep fluorine removal by utilizing aluminum-containing functional group resin, and controlling fluoride in effluent to be lower than 7mg / L; and finally, conveying the effluent to an MVR evaporator for evaporation circulation. Through a specific mixing ratio and a dual defluorination process, the problems of crystallization and hardening of the high-fluorine mother liquor and corrosion of an MVR evaporator are effectively solved. Data show that the process can reduce the fluoride content to 0.02 mg / L or below, and the system has stable conductivity and no scaling phenomenon. The outsourcing treatment amount of the mother liquor as hazardous waste is reduced, the reduction of the hazardous waste is realized, the operation cost is obviously reduced, and the service life of equipment is prolonged.

The utility model discloses electroplating wastewater multistage purification recycling equipment which comprises a support and a stirring barrel, the stirring barrel is installed in the support, a filter shell is installed at the top end of the stirring barrel, a storage box is installed on the side wall of the support, a top cover is installed at the top end of the storage box, the top cover is movably connected with the filter shell, and the filter shell is installed on the side wall of the support. And a first filter is arranged outside the bracket. According to the wastewater multi-stage purification recycling equipment, convenient multi-stage purification is realized, filtered large-particle pollutants can be conveniently scraped, swept and discharged, the convenience for cleaning the filtered pollutants is improved, the electroplating wastewater can be conveniently and fully mixed and treated by adding chemicals, the electroplating wastewater can be conveniently treated by a physical and chemical combination method, and the electroplating wastewater can be conveniently recycled. And the purification quality and efficiency of the wastewater multi-stage purification recycling equipment are improved.

The invention relates to the technical field of wastewater treatment, in particular to an electroplating nickel-chromium wastewater treatment device which comprises a sewage tank, a water suction pump is fixedly connected to the upper surface of the inner wall of the bottom of the sewage tank, one end of the water suction pump is fixedly connected with a door-shaped pipeline, and the other end of the door-shaped pipeline extends into a flocculation tank. Four square columns are fixedly connected to the four corners of the lower surface of the flocculation tank, stirring assemblies are fixedly connected to the upper surfaces of the tank walls of the two sides of the flocculation tank, and one end of the bottom of each stirring assembly is connected with an anti-condensation assembly in a meshed mode. According to the nickel-chromium electroplating wastewater treatment device, the water pump is matched with the flocculation basin, the sedimentation basin and the filter press, metal impurities such as nickel and chromium contained in wastewater are sequentially neutralized, stripped and filtered, the site requirement of the wastewater treatment device can be reduced through flow matching, and the production requirements of many related industries such as chemical engineering, metal or sewage processing plants are met; operation is convenient, and efficiency is high.

The invention relates to the technical field of water treatment adsorption, in particular to a composite adsorbent for treating nickel-containing electroplating wastewater and a preparation process of the composite adsorbent. The problem that the removal efficiency is low due to the fact that an existing treatment agent is interfered in the nickel removal process is solved. Magnetic halloysite is used as a rigid framework, chitosan and polyethyleneimine are used as auxiliary materials, and after in-situ crosslinking, thiourea groups are chemically grafted to prepare the adsorbent. The three-dimensional synergy of the halloysite nano-channel and the sulfur-nitrogen double-coordination group overcomes the technical bottlenecks of difficult complex breaking and poor competitive adsorption selectivity of strong complex nickel. The obtained adsorbent has excellent complex nickel deep removal rate and calcium and magnesium interference resistance, and high mechanical strength and rapid magnetic separation are realized by virtue of a rigid-flexible microstructure. The material has the advantages of high regeneration cycle efficiency and controllable preparation process, and is especially suitable for deep purification and resource recovery of electroplating wastewater.

The utility model relates to the technical field of copper electroplating waste liquid recovery, in particular to a copper electroplating waste liquid copper sulfate recovery device which comprises a copper sulfate electroplating bath, a temporary storage tank, a heat exchanger, a factory service end ice water machine, a separator, a crystal collecting tank and a volatilization air exhaust dryer. An outlet of the copper sulfate electroplating tank is communicated with an inlet of the temporary storage tank, an outlet of the temporary storage tank is connected with an inlet of the heat exchanger, the heat exchanger is communicated with the factory service end water chiller, cold water of the factory service end water chiller circulates in the heat exchanger, and a filter screen is arranged at the bottom of the heat exchanger and communicated with the dilute waste liquid collecting tank. The copper electroplating wastewater discharge is improved, copper sulfate is separated out and purified through low-temperature crystallization and collected, waste liquid reduction and resource recovery are achieved, the environmental protection effect is optimized, meanwhile, a novel copper sulfate pentahydrate on-line auxiliary recovery process is constructed, simple recovery equipment is additionally arranged on the basis of the original copper electroplating process, and the copper electroplating wastewater is recycled. A waste reduction target can be achieved by invested a small amount of money, and the environment-friendly wastewater treatment cost is greatly reduced.

The application discloses a circulating front-end treatment device based on electroplating wastewater, which comprises a filter residue tank, a stainless steel filter cover is fixed on the inner wall of the filter residue tank through bolts, a medicine storage cylinder is fixed on the top of the stainless steel filter cover in the filter residue tank through a support, and a sealing sleeve is slidably connected to the medicine storage cylinder; the application takes the rotating speed gear of a transmission assembly as the control basis, takes the electroplating wastewater in the liquid inlet as the detection object, controls the rotation of the rotating shaft according to the acid-base value of the electroplating wastewater, the rotating shaft one drives the rotating shaft two and the elastic scraper to rotate at low speed, the large-particle impurities intercepted on the inner wall of the stainless steel filter cover are scraped and removed in circulation, the precipitation of heavy metal ions in the electroplating wastewater is accelerated at the same time, the rotating speed of the rotating shaft one is improved to drive the rotating arm on the rotating shaft two to rotate, the groove sleeve side friction disc is separated from the friction sleeve on the rotating shaft one under the pulling of the connecting rod, the sealing sleeve at the bottom of the medicine storage cylinder is opened, and the medicine is automatically added.

The invention relates to an imidazole group grafted modified polystyrene resin material and a preparation method and application thereof, and the preparation method comprises the following steps: swelling chloromethyl polystyrene resin in an organic solvent, reacting with 2-aminobenzimidazole at 70-110 DEG C for not less than 24 hours in the presence of a strong alkali and weak acid salt, filtering, washing, and drying to obtain the imidazole group grafted modified polystyrene resin material. And washing and drying to obtain the imidazole group grafted modified polystyrene resin material. According to the invention, 2-aminobenzimidazole is efficiently grafted to a polystyrene skeleton through a simple affinity substitution reaction. The prepared resin has high adsorption capacity and good selectivity to copper ions and nickel ions in an aqueous solution, and has good regeneration and reuse performance. The resin is simple in synthesis process and low in cost, and can be widely applied to the fields of electroplating wastewater treatment, ultrapure water preparation, medicine separation and purification and the like.

The application discloses a grafted cellulose-based separation membrane and a preparation method thereof. The separation membrane comprises a cellulose-containing membrane substrate and double grafting chains grown on both sides of the membrane; the double grafting chains comprise Block A chains grafted on the membrane substrate and Block B chains grafted on the ends of the Block A chains; the structure of the separation membrane is: substrate-[Block A]-[Block B], the Block A chains are block copolymer chains containing thiourea groups and amine oxime groups, and the Block B chains are block hydrophobic chains containing vinyl imidazole onium salt grafting products. The Block A chains can improve the adsorption capacity for heavy metal ions through the bidentate coordination of the thiourea groups and the amine oxime groups; the Block B chains can remove organic matters through the electrostatic repulsion of the vinyl imidazole onium salt for harmful anions and the hydrophobic-hydrophobic interaction. The preparation method of the separation membrane comprises double-sided activation of the membrane substrate, fixing of initiators and double-sided growth of the Block A chains and the Block B chains, the obtained grafted cellulose membrane has a Zeta potential of greater than or equal to +40 mV, a water contact angle of greater than or equal to 105 degrees and a carbon residue rate of greater than or equal to 30% at 600 DEG C, and is suitable for treatment of complex contaminated wastewater such as electroplating wastewater.

The invention discloses hydraulic cylinder electroplating wastewater treatment and purification equipment in the technical field of wastewater treatment, which comprises a machine body, a driving shaft is transversely arranged above the machine body, the driving shaft is provided with a plurality of groups of filtering units and filter pressing units, and the filtering units and the filter pressing units are distributed in a staggered manner; clearing units are arranged on the two sides of each filtering unit, baffles are arranged on the two sides of the machine body, and a plurality of guide frames of V-shaped structures are evenly distributed on the baffles. The driving shaft is arranged to push the multiple sets of plate frames to synchronously conduct opening and closing operation, the purpose of synchronously discharging all solid waste in the filter press is achieved, the discharging operation efficiency is improved, the clearing unit is arranged to remove the residual solid waste on the filter plate, the solid waste can be effectively prevented from remaining on the filter plate, and the filter press is convenient to use. And stable proceeding of subsequent electroplating water treatment operation is ensured.

The invention discloses an electro-Fenton wastewater treatment method and system based on a multivalent metal catalyst, the multivalent iron-copper bimetallic synergistic catalyst is coupled with an electro-Fenton system, under the action of an external electric field, hydrogen peroxide is continuously generated, a flowing three-dimensional electrode is formed, hydroxyl radicals are efficiently activated and generated, and heavy metal complexes are rapidly cracked, so that the wastewater treatment effect is improved. And released free metal ions are reduced, deposited and recycled at the cathode, so that high-efficiency and low-consumption complex breaking and heavy metal removal are realized. The system is high in complex breaking efficiency, wide in applicable pH range, low in sludge yield and capable of synchronously recycling heavy metal, and a new thought is provided for deep treatment and recycling of electroplating wastewater.