412 results about "Electroplating wastewater" patented technology

The invention provides an electroplating wastewater dosage prediction system based on a dynamic flow-concentration coupling model, and relates to the technical field of industrial wastewater treatment.The electroplating wastewater dosage prediction system is characterized in that the dynamic flow-concentration coupling model is established by collecting real-time flow and heavy metal ion concentration parameters of a wastewater treatment system; the method comprises the following steps: identifying a time-lag relationship and coupling strength between flow change and concentration fluctuation, generating a flow-concentration coupling strength matrix, constructing a dosage prediction curve by adopting a piecewise linear mapping method on the basis of the matrix, performing matching positioning on a current flow-concentration coupling state, and performing gradient pulse dosage parameter prediction by applying a gradient pulse dosage parameter prediction technology. And the dosage of the medicament can be accurately predicted. Therefore, the problems that the removal rate of partial heavy metals is reduced, the medicament utilization rate is low, and even secondary pollution is possibly caused or the operation cost is obviously increased due to the fact that the adding amount and the adding time sequence of various medicaments are difficult to adjust timely and accurately can be solved.

The invention discloses a zero discharge process for electroplating wastewater membrane separation, and relates to the field of wastewater discharge, and the zero discharge process comprises the following operation steps: S1, setting up discharge equipment; s2, carrying out micro-electrolysis reaction; s3, advanced oxidation reaction; s4, filtering treatment; s5, membrane treatment: the pretreated electroplating wastewater enters a first-stage RO device, effluent of the first-stage RO device enters a second-stage RO device, salt and organic matter solution intercepted by a first-stage RO membrane is discharged as concentrated water of the membrane, enters a concentrated water RO membrane device and is further filtered in the concentrated water RO membrane device, effluent of the concentrated water RO membrane is recycled, and concentrated water enters the concentrated water RO membrane device and is filtered again; and S6, carrying out evaporation treatment. According to the zero-discharge process for electroplating wastewater membrane separation, when electroplating wastewater is discharged, the dosage of chemicals such as coagulant can be reduced, organic matters in water can be removed by utilizing a chemical oxidation method, and meanwhile, the method is high in water recovery rate, stable in water quality and small in concentrated water generation amount.

The invention discloses an electroplating wastewater zero-discharge process based on a roll-type packaged RO membrane, and relates to the field of wastewater discharge, and the electroplating wastewater zero-discharge process comprises the following steps: S1, micro-electrolysis treatment; s2, advanced oxidation treatment; s3, ultrafiltration treatment: the electroplating wastewater subjected to advanced oxidation treatment enters a first-stage RO device, effluent of the first-stage RO device enters a second-stage RO device and then enters a concentrated water RO membrane device, effluent of a concentrated water RO membrane is recycled, concentrated water enters the concentrated water RO membrane device to be filtered again, produced water generated by the concentrated water RO device is recycled for production, and the concentrated water enters an ultrahigh-pressure RO device to be concentrated again; and S4, evaporation treatment. According to the electroplating wastewater zero-discharge process based on the roll-type packaged RO membrane, when the electroplating wastewater is discharged, the dosage of chemicals can be effectively reduced, and organic matters in the electroplating wastewater can be removed by utilizing a chemical oxidation method, so that the whole process is more stable and simpler, and the process is high in water recovery rate, stable in water quality and low in cost. And the generation amount of concentrated water is less.

The invention discloses an electroplating wastewater concentration and filtration system and method based on secondary RO, and relates to the field of electroplating wastewater concentration and filtration, and the system comprises a pretreatment unit, a primary RO unit, a secondary RO unit, a concentration treatment unit and a control unit. According to the electroplating wastewater concentration and filtration system and method based on the secondary RO, secondary RO treatment can further improve water quality on the basis of primary RO, molecular pollutants and salt of different sizes can be gradually removed by accurately designing performance parameters and an arrangement mode of two stages of RO membrane assemblies, and compared with traditional primary RO treatment, the system and the method have the advantages that the water quality is improved, and the cost is reduced. According to the system, the recycling rate of the electroplating wastewater can be increased to 90% or above from 60%-70%, the taking amount of fresh water is greatly reduced, meanwhile, the water quality of secondary RO fresh water can meet the high requirement for rinsing water in the electroplating process, the product quality can be effectively guaranteed, the defective rate caused by the water quality problem is reduced, and the production benefit is improved.

The invention discloses a post-electroplating wastewater treatment system and treatment method with graded recovery, and relates to the technical field of electroplating wastewater treatment.The post-electroplating wastewater treatment system comprises a recovery cylinder, a primary separation unit, a chemical adding unit, a final-stage separation unit and a driving unit, and the recovery cylinder is used for mounting and fixing the primary separation unit, the chemical adding unit, the final-stage separation unit and the driving unit; the primary separation unit is used for separating greasy dirt and precipitated impurities, the chemical adding unit is used for separating suspended solids, the final-stage separation unit is used for separating organic matters and cleaning the inner wall, and when sewage enters the recycling barrel, the driving unit is used for controlling the primary separation unit to separate and recycle the greasy dirt and the precipitated impurities, and the chemical adding unit is used for recycling the suspended solids; organic matter separation and inner wall cleaning are carried out through the final-stage separation unit, and the influence on the separation and recovery efficiency is avoided.

The utility model relates to the technical field of sewage treatment, and provides a multistage capacitive deionization device for electroplating wastewater, which comprises a box body, a quick dismounting mechanism is arranged in the box body, and the quick dismounting mechanism comprises five groups of sliding strips which are in sliding connection with preformed grooves in the inner wall of the box body; a cation filtering layer, an anion filtering layer, a nickel ion adsorption layer, a medium filtering layer and an activated carbon filtering layer are fixedly connected to the side surfaces, close to each other, of each group of sliding strips respectively. By means of the technical scheme, the problem that in the prior art, by arranging the sliding strips, use can be conducted by changing the installation positions of all the laminates is solved, and by arranging the fixing frames, the fixing rods, the L-shaped clamping strips and the clamping blocks, rapid self-locking can be conducted after the laminates are installed, so that nickel ions can be rapidly treated after being adsorbed, and the service life of the nickel ions is prolonged. And each laminate can be conveniently cleaned and replaced, and the problem that the subsequent use effect is affected by much dirt adhered to the surfaces of the laminates is avoided.

The invention discloses a flocculent precipitation electroplating wastewater recovery device, which relates to the technical field of wastewater treatment, and comprises a wastewater treatment tank body, through the arrangement of the upper blocking plate and the lower blocking plate, floc floating is avoided, a flocculating agent needs to be added in the flocculation process to promote pollutants to form floc, if the floc floats and is discharged along with supernate, the flocculating agent is taken away along with the floc, the flocculating agent can fully play a role, the dosage of the flocculating agent is reduced, and the cost is reduced. In addition, when the floc can be effectively gathered and settled instead of floating and losing, the whole flocculation and sedimentation process can be completed more quickly, the influence on the wastewater treatment efficiency is avoided, in addition, the flocculation process aims at removing pollutants in water, and if the floc floats into supernate and is discharged, the wastewater treatment efficiency is improved. And part of pollutants cannot be thoroughly removed, so that the effluent quality is influenced, and residues of pollutants such as suspended matters, organic matters and heavy metals in water can be reduced.

The utility model provides a process system for recycling electroplating comprehensive wastewater, which relates to the technical field of wastewater treatment and is characterized in that a liquid inlet of a primary electrodeionization device is communicated with a primary wastewater treatment unit, and a fresh water outlet of the primary electrodeionization device is communicated with a secondary wastewater treatment unit; a concentrated water outlet of the first-stage electrodeionization device is communicated with the second-stage electrodeionization device; a fresh water outlet of the secondary electrodeionization device is communicated with the primary electrodeionization treatment device, and a concentrated water outlet of the secondary electrodeionization device is communicated with the solid-liquid separation device; a liquid outlet of the solid-liquid separation device is communicated with the evaporation device; the evaporation device comprises a condensed water outlet and a byproduct salt outlet, and the condensed water outlet is communicated with the secondary wastewater treatment unit; a produced water outlet of the secondary wastewater treatment unit is communicated with the produced water collecting tank; a waste liquid outlet of the second-stage wastewater treatment unit is communicated with a second-stage electrodeionization device, so that pollutants such as heavy metal ions and organic matters in wastewater can be removed, and cyclic utilization of water resources and recovery of salt resources are realized.

The invention discloses a multi-coupling electroplating wastewater treatment process, which relates to the technical field of electroplating wastewater treatment and comprises pretreatment, a chemical precipitation method, an ion exchange method, a reverse osmosis method, advanced treatment and sludge treatment. The device has the characteristics of reasonable and simple structure, low production cost and convenience in installation, various pollutants such as suspended particulate matters, heavy metal ions, trace organic matters and the like in the electroplating wastewater can be effectively removed through multiple process coupling, the water quality is ensured to reach the reuse standard, and the cyclic utilization of water resources is realized; according to characteristics of different heavy metal wastewater, the pH value is accurately adjusted, chemical precipitation, ion exchange and other processes are combined, the heavy metal removal efficiency is remarkably improved, and the treatment effect on wastewater containing copper and nickel is especially excellent; according to the filtering equipment, the movable separation base, the switching communication mechanism and the circulating filtering mechanism cooperatively operate, comprehensive filtering of wastewater can be achieved, impurities can be effectively collected through the suspension collecting mechanism, and the pretreatment effect is guaranteed.

The present application discloses a method for treating and resourcefully recycling electroplating cyanide copper wastewater, belonging to the technical field of electroplating wastewater treatment. In this application, the cyanide copper wastewater is adjusted with strong base, and a ferrous sulfate solution is added to the cyanide copper wastewater after strong base adjustment for a combination reaction; the cyanide copper wastewater after the combination reaction is adjusted with acid and subjected to a Prussian blue reaction; a coagulant aid is added to the solution after the Prussian blue reaction, and solid-liquid filtration separation is carried out on it to obtain iron cyanide sludge and preliminarily precipitated cyanide-removing wastewater; the preliminarily precipitated cyanide-removing wastewater is adjusted with weak base, hydrogen peroxide is added to the preliminarily precipitated cyanide-removing wastewater after weak base adjustment, and the copper in the preliminarily precipitated cyanide-removing wastewater after weak base adjustment is used as a catalyst for an oxidation reaction to remove the remaining cyanide-containing pollutants; after the oxidation reaction is completed, lime is added for flocculation precipitation to obtain copper sludge, thus realizing a one-step process flow, converting copper cyanide compounds into resources that can be recycled, and improving the resource utilization rate.

The invention provides a composite extraction agent and a method for separating gold in electroplating wastewater by using the composite extraction agent, and belongs to the field of wastewater purification, the composite extraction agent comprises an extraction main agent and an extraction main agent stabilizer, the extraction main agent is a diallyl sulfide compound, and the extraction main agent stabilizer is dithiothreitol. The extraction main agent can form a stable complex with gold ions to enter an organic phase, and a nonlinear space structure of the extraction main agent can realize selective coordination with the gold ions, so that coordination reaction with other impurity metal ions is avoided; the sulfydryl in the dithiothreitol molecular structure has reducibility, so that the residual oxidant or dissolved oxygen in the solution can be prevented from oxidizing the extraction main agent, and the nonlinear polysulfide structure of the extraction main agent is kept. According to the method, the heterogeneous interface-coordination reaction of the activation sites in the molecular structure of the extracting agent and the gold ions in the inorganic phase is ensured by regulating and controlling the multi-component components of the composite extracting agent, efficient selective chelation of target metal is achieved, and the purpose of separating and enriching the gold ions in the gold-containing electroplating waste liquid is achieved.

The invention discloses an oil-water separation membrane for electroplating wastewater treatment and a preparation method, and particularly relates to the technical field of electroplating wastewater treatment.The specific preparation method comprises the following steps that firstly, a membrane base material is selected; step 2, pretreatment; step 3, coating or dipping the oil-resistant layer; step 4, drying and curing for the first time; 5, preparing a supporting layer; step 6, coating a functional layer; step 7, drying and curing for the second time; and step 8, post-processing. The whole preparation process is simple and easy to operate, firstly, the selected membrane base material is subjected to surfactant cleaning and acid-base treatment, impurities can be removed, the hydrophilicity of the membrane material can be improved, and the surface of the membrane material is gradually coated or impregnated with the oil-resistant layer and the multiple functional layers, so that the oil-resistant performance of the membrane material is improved. The comprehensive performance and operation stability of the membrane can be improved, and meanwhile, heat treatment and cross-linking treatment are carried out in post-treatment of the membrane material, so that the stability and pollution resistance of the membrane can be improved.

The invention belongs to the technical field of industrial wastewater purification, and discloses a membrane-free single-tank water electrolysis hydrogen production-electroplating wastewater enrichment coupling method and device, and the method comprises the following steps: injecting a neutral electroplating wastewater mixed solution into a membrane-free single tank; discharging air in the membrane-free single tank, and heating the neutral electroplating wastewater mixed solution to a preset temperature; direct current is firstly introduced into the heated neutral electroplating wastewater mixed solution, so that metal ions in the neutral electroplating wastewater mixed solution migrate to the hydrogen evolution electrode, then the direct current is converted into pulse current, so that the metal ions deposit on the hydrogen evolution electrode, and hydrogen precipitated on the hydrogen evolution electrode is continuously collected; closing the current, taking out the hydrogen evolution electrode and collecting metal ions on the hydrogen evolution electrode; and adding an oxygen evolution catalyst into the membrane-free single tank, starting the magnetic rotor to carry out oxygen evolution reaction, and taking out the oxygen evolution catalyst until bromate in the neutral electroplating wastewater mixed solution is completely reduced. According to the invention, the preparation of high-purity hydrogen and oxygen and the enrichment of metal ions can be realized.

The invention discloses a method for preparing a sandwich type composite membrane capable of efficiently adsorbing heavy metal ions, and belongs to the field of water pollution treatment. The preparation method comprises the following steps: firstly, carrying out hydrolysis modification on polylactic acid particles, then dissolving the polylactic acid particles in dichloromethane / N, N-dimethylformamide to prepare an outer-layer spinning solution, and meanwhile, mixing polyvinyl alcohol, sodium alginate and polyethyleneimine to prepare an inner-layer spinning solution; performing electrostatic spinning on the outer-layer spinning solution to obtain an outer-layer film named as an outer-layer PLA film, performing electrostatic spinning on the inner-layer spinning solution to obtain an inner-layer film named as an inner-layer PVA / SA / PEI film, and re-spinning the outer-layer PLA film on the other side of the inner-layer PVA / SA / PEI film by using the outer-layer spinning solution, namely wrapping the inner-layer PVA / SA / PEI film with the two outer-layer PLA films to form a sandwich structure; and finally, obtaining the composite membrane by adopting a calcium ion cross-linking process. The composite membrane can efficiently adsorb metal ions, is high in adsorption performance retention rate and good in strong acid stability, and is suitable for selective iron removal of electroplating wastewater.

The invention discloses an electroplating wastewater recovery system and method, and belongs to the field of electroplating wastewater treatment.The electroplating wastewater recovery system comprises a resin adsorption device, a membrane concentration device, an electrolytic tank, a mixing tank, an immersed ultrafiltration membrane tank, electrodialysis equipment, reverse osmosis equipment and bipolar membrane electrodialysis equipment; a concentrated solution outlet of the membrane concentration device is communicated with the electrolytic tank, a dialysate outlet of the resin adsorption device, a permeate outlet of the membrane concentration device and a residual liquid outlet of the electrolytic tank are all communicated with the mixing tank, a water outlet of the mixing tank is communicated with the immersed ultrafiltration membrane tank, and a filtrate outlet of the immersed ultrafiltration membrane tank is communicated with the electrodialysis equipment. A desalted liquid outlet of the electrodialysis equipment is communicated with the reverse osmosis equipment, a concentrated liquid outlet of the electrodialysis equipment is communicated with the bipolar membrane electrodialysis equipment, and an alkali liquid outlet of the bipolar membrane electrodialysis equipment is communicated with the immersed ultrafiltration membrane pool. According to the method, not only are valuable metals obtained, but also acid liquor and alkali liquor are obtained.

The invention discloses an electroplating wastewater treatment device, and relates to the technical field of electroplating wastewater treatment, the electroplating wastewater treatment device comprises an upper box body, a primary filter tank and a dosing reaction mechanism, a partition plate is fixed in the middle of the upper box body, and the primary filter tank is arranged on one side of the upper box body. According to the electroplating wastewater treatment device and method, the chemical adding reaction mechanism is arranged to be linked with the adsorption assembly, electroplating wastewater produced industrially is filtered through the primary filter tank and fed into the rotary drum, and the rotary drum can drive the multiple adsorption fillers to alternately adsorb and remove most of organic matter and heavy metal ions in the wastewater when rotating; a chemical agent sprayed by a spraying pipe is oscillated and mixed with the electroplating wastewater, and then a spraying pipe of the chemical adding reaction mechanism rotates and swings to drive a spraying head to swing to spray the chemical agent to be mixed and contacted with electroplating mixed liquid, so that the electroplating wastewater reacts with the chemical agent step by step in the bottom box; it is ensured that the electroplating wastewater treatment device can fully treat harmful substances in the electroplating wastewater.

The utility model discloses a treating pond for electroplating wastewater, which is applied to the field of wastewater treatment and comprises a treating pond, and the surface of the treating pond is communicated with a water inlet pipe; the transmission mechanism drives the rotating pipe to rotate, so that the stirring pipe rotates to stir the electroplating wastewater, the heating pipe heats air, the air blower conveys hot air into the wastewater through the air spraying head, the temperature of the wastewater rises, the air enters the wastewater, flowing of reaction liquid can be promoted, mixing of chemicals and the electroplating wastewater is further accelerated, and the electroplating wastewater treatment efficiency is improved. The piston is driven by the air cylinder to move upwards, so that the air pressure in the fixed barrel is reduced, the medicament enters the fixed barrel through the liquid suction pipe, then the piston is driven by the air cylinder to move downwards, the medicament is discharged from the second one-way valve, and the air cylinder moves in a reciprocating manner, so that the reaction efficiency is improved; therefore, the purpose of quantitative dosing is achieved, dosing accuracy is guaranteed, and waste of chemicals is avoided.

The invention belongs to the technical field of electroplating wastewater treatment, and particularly relates to acidic electroplating wastewater treatment equipment and process based on combination of Fenton oxidation and acid-resistant nanofiltration membrane separation. Considering that the acidic nickel plating wastewater not only can provide acidic conditions, but also has ferrous ions, based on this, the acidic nickel plating wastewater is used as a raw material and is mixed with the ferrous ions and hydrogen peroxide for a Fenton reaction, and then iron ions and nickel ions are separated by adopting a PP precision filter and an anti-high-turbidity ultrafiltration system. According to the method, iron ions are recycled after being reduced by an iron reduction reactor, nickel ions are separated by adopting an acid-resistant nanofiltration system, and the obtained nickel ions are subjected to electroplating and water recycling again, so that the technical defects existing in the traditional nickel plating wastewater treatment are overcome, and the utilization of the acidic nickel plating wastewater is realized.

The invention belongs to the technical field of wastewater filtration, and relates to a flocculation, purification and recovery all-in-one machine for electroplating wastewater, the flocculation, purification and recovery all-in-one machine comprises a bottom frame, a treatment barrel, a sealing cover, a liquid injection pipe and an agent feeding pipe, the treatment barrel is connected to the middle of the upper part of the bottom frame, the top of the treatment barrel is connected with the sealing cover, and a discharge port is formed in the eccentric position of the bottom of the treatment barrel; a liquid injection pipe and an agent feeding pipe are connected to the sealing cover and both communicate with the interior of the treatment barrel. After harmful substances in wastewater are flocculated, the separation barrel with precipitates can be rotated to the position below the filter pressing plate, then the filter pressing plate can be controlled to move downwards to extrude the precipitates, water doped in the precipitates is extruded out, and therefore the effect that the precipitates are subjected to filter pressing treatment after flocculation can be achieved; the subsequent filter pressing treatment is not needed, the operation is more convenient, and the efficiency is higher.

The invention relates to the technical field of electroplating wastewater treatment, and discloses an electroplating wastewater pollution early warning and regulation system based on Internet of Things, comprising: a sensing layer for collecting characteristic parameters of an electroplating wastewater treatment link through distributed sensing nodes, the characteristic parameters including a water quality parameter, an equipment operation parameter and an environmental parameter, a wireless communication module is arranged in the sensing node; the network layer is used for constructing a wireless communication network and transmitting the parameters acquired by the sensing layer to the application layer through a multi-hop relay; and the application layer receives and processes the parameters transmitted by the network layer to realize pollution early warning, pollution risk prediction and regulation and control instruction generation, and the regulation and control instruction is fed back to the execution layer through the network layer. By adopting a channel frequency hopping mechanism, when it is monitored that the interference intensity of a current communication channel exceeds a preset interference threshold value, the standby channel can be automatically switched, instruction transmission of an application layer and an execution layer is not interrupted, and it is guaranteed that data such as water quality parameters and equipment operation parameters collected by a sensing layer are continuously and stably transmitted to the application layer.

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 a method for removing nitrate nitrogen by recycling nickel and iron metals in an electroplating solid waste acid leaching solution to prepare a cathode. The nitrate nitrogen removal effect is achieved under different conditions through regulation and control of parameters in an acid leaching solution electrodeposition process. According to the electrode, nickel and iron heavy metals contained in electroplating wastewater metal solid waste acid immersion liquid serve as basic materials, loose and porous foamy copper CF with the large specific surface area serves as a substrate, the nickel and iron heavy metals grow on the surface of the foamy copper in situ in the form of LDH through an electrodeposition method, and the NiFe-LDH / CF electrode material is obtained. Meanwhile, the electrode is found to have an excellent electrochemical nitrate nitrogen removal effect by regulating and controlling the initial state of an acid leaching solution in the electro-deposition process. According to the prepared electrode material, heavy metal in electroplating wastewater serves as a source, electrodeposition is adopted, other chemical components do not need to be added, and electrodeposition wastewater is reused after being simply treated; when the electrode is used for treating nitrate nitrogen in electroplating wastewater, the purpose of treating waste with waste is achieved.

The invention discloses an electroplating chromium-containing wastewater treatment device and an electroplating chromium-containing wastewater treatment method, and belongs to the technical field of electroplating wastewater treatment. The electroplating chromium-containing wastewater to be treated flows into a cathode chamber in a reaction treatment unit from a water inlet, hexavalent chromium in the electroplating chromium-containing wastewater is converted into trivalent chromium through electrons near a carbon-based cathode, and then the trivalent chromium flows into an anode chamber in the reaction treatment unit; the dissolving-out type iron anode loses electrons to generate ferrous ions, residual hexavalent chromium in the electroplating chromium-containing wastewater is reduced into trivalent chromium through the ferrous ions, and the wastewater sequentially passing through the cathode chamber and the anode chamber flows out of the water outlet; wherein electron movement is generated between the cathode chamber and the anode chamber through the conductive diaphragm, so that an electrode and a medicine do not need to be additionally added when the device is used for treating the wastewater, and the wastewater treatment cost is reduced.

The utility model discloses an improved electroplating wastewater oil removal device, comprising a main body box, a partition is fixedly installed inside the main body box, a cleaning component is arranged on the outside of the main body box, an extrusion component is arranged on the top of the main body box and on the left side of the partition, an inner core is fixedly installed between two rotating rods, and oil-absorbing cotton is fixedly installed on the outside of the inner core. The utility model relates to the technical field of electroplating wastewater treatment; the improved electroplating wastewater oil removal device moves left and right along the main body box through the oil-absorbing cotton, and the gear rolls along the rack during the movement, so that the rotating rod and the oil-absorbing cotton are driven by the gear to roll, so that the oil-absorbing cotton can be moved along the water surface and roll at the same time, and the oil-absorbing cotton can be rolled along the water surface to absorb the oil on the surface, and the rolling oil-absorbing cotton can make the outside of the oil-absorbing cotton absorb oil, and this method can ensure that the oil is absorbed more thoroughly.

The invention provides an electroplating wastewater dosing feedback regulation method based on online water quality detection, and relates to the technical field of environmental chemical analysis and water quality monitoring, the electroplating wastewater dosing feedback regulation method comprises the following steps: collecting chromium ion concentration parameters, pH value parameters and oxidation-reduction potential parameters of electroplating wastewater, and combining a trained chromium ion reduction model to carry out real-time calculation and analysis; and dynamic correction and closed-loop feedback adjustment of the dosage are realized. Therefore, the accuracy and the response speed of dosing control can be remarkably improved, the problem of excessive dosing or insufficient dosing of the medicament is effectively reduced, and meanwhile, the stability and the standard-reaching rate of wastewater treatment are ensured, so that the economical efficiency and the environmental protection property of wastewater treatment are improved.

The invention relates to the technical field of wastewater treatment, and discloses an electroplating wastewater sodium ion removal method based on ion exchange resin, which comprises the following steps: step 1, pretreating electroplating wastewater; step 2, flocculent precipitation; 3, plate-frame pressure filtration treatment is adopted; step 4, ion exchange treatment; in the step 4, resin which is subjected to polyethylene glycol grafting treatment and has sulfonic acid groups is used as sodium ion selective ion exchange resin. According to the method for removing the sodium ions in the electroplating wastewater based on the ion exchange resin, the PEG grafted resin with the sulfonic acid group is adopted for treating the electroplating wastewater, so that the sodium ions in the wastewater can be more effectively removed, the removal efficiency of the sodium ions is improved, and the service life of the ion exchange resin is prolonged. In addition, a medicament combination form of the modified zeolite and the PAM flocculant is adopted, and a complexing agent with relatively high price is not needed, so that the medicament cost can be greatly reduced.

The invention provides comprehensive treatment equipment for electroplating wastewater, and relates to the technical field of electroplating wastewater treatment, and the comprehensive treatment equipment comprises a treatment sedimentation tank and a movable agent feeding mechanism. The side wall of the treatment sedimentation tank is provided with an outer supporting slideway and a switching assembly; and the movable mechanism comprises a movable frame, an agent feeding structure, a filter plate stirring assembly and a forward moving driving assembly. The filter plate stirring assembly is driven by the forward-moving driving assembly, a rotary stirring mode and a static filtering mode are alternately switched in the moving process, waste water is stirred to drive the floating type throwing assembly to move up and down, and dynamic and uniform throwing of chemicals is achieved. According to the equipment, the mixing effect is optimized through a double stirring mode, purified water and waste residues are separated by the filter plate assembly after precipitation, and precipitates are pushed to be intensively discharged during deslagging. The device solves the problems of non-uniform medicament mixing and low precipitation efficiency in the traditional process, has the advantages of high automation degree, thorough separation, energy conservation and environmental protection, and is suitable for efficient treatment of electroplating wastewater.

The utility model discloses an electroplating wastewater collecting device, which relates to the technical field of electroplating wastewater collection, and comprises a collecting box, the top of the collecting box is fixedly connected with a top cover, the outer wall of the top cover is fixedly connected with a water inlet pipe, and one end of the water inlet pipe close to the top cover is fixedly connected with a filter cover. A conical guide plate is fixedly connected to the side, away from the water inlet pipe, of the top cover, a water storage tank is fixedly connected to the bottom of the conical guide plate, a conical funnel is fixedly connected to the bottom of the collecting tank, a heating plate is fixedly connected to the outer surface of the conical funnel, and a water outlet cylinder is fixedly connected to the bottom of the conical funnel; through the reaction mechanism and the sealing mechanism, the problems that when electroplating wastewater is collected by existing equipment and a large amount of wastewater needs to be collected and stored, a large amount of collecting boxes are used, a large amount of space is occupied, resources are wasted, and the wastewater is inconvenient to collect are solved.

The invention relates to the technical field of water pollution control and treatment, and particularly discloses electroplating wastewater heavy metal ion treatment equipment. The cathode bar is sleeved with the isolation cover provided with the multiple communicating grooves at intervals in the circumferential direction, and the annular mounting base with the lifting mechanism is slidably mounted outside the isolation cover, so that the clearing mechanism in the mounting base can dynamically clear sediments in the length direction of the cathode bar. The design of the communicating groove of the isolation hood not only allows electroplating wastewater to be in full contact with the cathode bar, but also restrains sediments in an area in the groove by limiting a fluid diffusion path, so that disordered diffusion of metal particles in the electrolytic tank is effectively prevented. And the lifting motion of the mounting seat is matched with the clearing mechanism, so that sediments on the surface of the cathode can be continuously stripped in the electrolysis process, the efficiency loss caused by shutdown clearing in a traditional aeration method is avoided, meanwhile, the secondary pollution risk of suspended sludge is reduced, and continuous and efficient recovery of heavy metal ions is realized.

The invention discloses a treatment method of electroplating wastewater, and belongs to the technical field of electroplating wastewater treatment. The process comprises the following steps: electrically adjusting the pH value of the electroplating wastewater to 2.5-4.0, adding ferrite, adopting a Ti / PbO2 anode and a graphite cathode, controlling the current density to 15-30mA / cm, introducing air, reacting for 40-80 minutes, and adjusting the pH value to 6.0-7.0 after the reaction; introducing the wastewater into a chelating resin column, wherein the chelating resin is an amino phosphonic acid type or iminodiacetic acid type; the method comprises the following steps of: introducing into a built-in filter column, loading two layers of recrystallized silicon carbide honeycomb ceramic membranes in the filter column in parallel, performing cross-flow filtration under the conditions that the operation pressure is 0.8-2.0 MPa, the temperature is 25-40 DEG C and the cross-flow velocity is 1.5-3m / s, and collecting permeate; the permeate liquid is used for backwashing every 8-12 hours of operation. According to the method, heavy metal ions in the electroplating wastewater can be effectively removed, and the treatment efficiency of the electroplating wastewater is improved.