CN111777148A

CN111777148A - Electroplating wastewater treatment tank

Info

Publication number: CN111777148A
Application number: CN202010726421.8A
Authority: CN
Inventors: 黄冬冬; 李云
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2020-10-16

Abstract

The invention relates to the field of electroplating wastewater treatment, in particular to an electroplating wastewater treatment pool, which comprises a purification box, a filtering system, an aeration system and a purification device, wherein the bottom of the purification box is provided with a plurality of aeration systems, the top of the purification box is provided with a plurality of purification devices, the aeration systems and the purification devices are mutually communicated, and the filtering system is fixedly connected with the output end of the purification box. The burden of running of a plurality of groups of mixing equipment is avoided, the purification process is simplified, and the equipment requirement is reduced.

Description

Electroplating wastewater treatment tank

Technical Field

The invention relates to the field of electroplating wastewater treatment, in particular to an electroplating wastewater treatment tank.

Background

The treatment of waste water or liquid from electroplating production, the waste water and liquid from electroplating plant contains a lot of metal ions such as: chromium, nickel, cyanogen, acid and alkali, and generally contains organic additives, some metal ions exist in a simple cation form, some metal ions exist in an acid radical anion form, some metal ions exist in a complex ion form, electroplating wastewater treatment is performed by chemical methods such as a neutralization precipitation method, a neutralization coagulation precipitation method, an oxidation method, a reduction method, a barium salt method, a ferrite method and the like, the chemical method is simple in equipment, less in investment and wider in application, the treatment of electroplating wastewater is generally emphasized at home and abroad, various treatment technologies are developed, and the discharge amount of pollutants is eliminated and reduced by measures of converting toxic treatment into non-toxic treatment and harmful treatment into harmless treatment, recovering precious metals, recycling water and the like.

With the rapid development of the electroplating industry and the increasing of the environmental protection requirement, the electroplating sewage treatment begins to enter the integration stage of the clean production process, the total amount control and the circular economy, the resource recycling and the closed cycle are the main flow directions of the development, and the existing electroplating wastewater treatment tank generally exists: (1) when the electroplating wastewater is subjected to diversified treatment, a plurality of stirring and dosing devices are needed, the volume of the devices is large, and the cost is high; (2) only reaction impurities are collected, so that a large amount of reaction gas is dissipated, serious waste is caused, and environmental pollution is easily caused; (3) the impurities produced by the chemical reaction can only be enriched at the bottom of the treatment tank, and a further collecting device is lacked, so that the cleaning load of the treatment tank is heavier.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an electroplating wastewater treatment tank.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an electroplating wastewater treatment pond, includes purifying box, filtration system, aeration systems and purification device, the bottom of purifying box is provided with a plurality of aeration systems, the top of purifying box is provided with a plurality of purification devices, wherein communicate each other between aeration systems and the purification device, the output fixed connection of filtration system and purifying box.

The utility model discloses a purification box, including purifying box, inlet tube and drain pipe, be provided with two at least sedimentation tanks on the diapire of purifying box, be provided with two at least enrichment covers on the roof of stating the purifying box, sedimentation tank and enrichment cover correspond the setting, and are adjacent it all fixes the division board that inlays to be equipped with just be located the purifying box inner wall between the sedimentation tank, the middle part of division board all is provided with the water conservancy diversion inclined plane, it is provided with the filtration pore all to distribute densely on the water conservancy diversion inclined plane.

It is specific, filtration system includes a water pump, rose box, filter core, collects storehouse, support, concentric shaft, scraper blade, paddle and No. two water pumps, the input and the drain pipe of No. two water pumps are linked together, the input of rose box is linked together through pipeline and each sedimentation tank, the output of rose box then is linked together with the input of a water pump, the rose box internal fixation inlays and is equipped with filter core and support, wherein the filter core is located the front side of support, the downside fixedly connected with of rose box collects the storehouse, the bottom fixed mounting who collects the storehouse has the exhaust-valve, it is equipped with the concentric shaft to rotate through the bearing in the support, the front end outer wall of concentric shaft can be dismantled and be connected with the scraper blade, the fixed cover of rear end outer wall of concentric shaft is equipped with the paddle.

Specifically, aeration systems includes air pump, forcing pipe, adds the medicine storehouse, locks aerofoil, pivot, sealed chamber, aeration pipe and intake pipe, the aeration pipe is fixed to be inlayed and to be established in the sedimentation tank, the air pump sets up the middle part at intake pipe and forcing pipe, the forcing pipe is linked together through pipeline and each aeration pipe, a plurality of aeration holes have been seted up on the aeration pipe, still be provided with sealed chamber on the forcing pipe, sealed intracavity rotates to inlay and is equipped with the pivot, pivot outer wall equidistance is provided with a plurality of locks aerofoil, the upside fixedly connected with in sealed chamber adds the medicine storehouse.

The purification device comprises a molecular sieve, a bifurcated pipe, a reversing valve, a plugging plate, a filler, a pressure release valve, a connecting pipe and a storage tank, the purification device is provided with two molecular sieves communicated between the bifurcated pipe, the molecular sieves are communicated with the storage tank through the connecting pipe, the pressure release valve is installed on the connecting pipe, the reversing valve is installed on the bifurcated pipe, one of the molecular sieves is fixedly embedded on the inner wall of the end part of the bifurcated pipe, the plugging plate is provided with a plurality of micropores, and the filler is arranged in the bifurcated pipe.

Specifically, the middle part of the filter element is provided with a perforation structure corresponding to the concentric shaft, the collection bin is positioned at the front side of the filter element, and the scraper blade is tightly attached to the end face of the front side of the filter element.

Specifically, all install water quality monitoring appearance on the output of drain pipe and a water pump, the output and the inlet tube of a water pump are linked together.

Specifically, the sealed cavity is a cylindrical cavity, and the aeration hole is arranged on the lower side of the aeration pipe.

Specifically, the bifurcated pipe is of a Y-shaped structure, and the two bifurcated pipes are respectively communicated with the enrichment cover and the air inlet pipe.

The invention has the beneficial effects that:

(1) according to the electroplating wastewater treatment tank, the purification box is divided into a plurality of purification areas by the plurality of partition plates, sewage is pumped by the second water pump to form forward water flow, and in the water flow process, the air pump aerates the pressurizing pipe and the aerating pipe, and the air flow drives the air locking plate to rotate and dial materials, so that chemical powder can be pneumatically conveyed into the purification areas to generate chemical reaction with the sewage to form solid impurities and fresh gas, and the regional modification is carried out in the sewage circulation process, so that the operation burden of a plurality of groups of mixing equipment is avoided, the purification process is simplified, and the equipment requirements are reduced.

(2) According to the electroplating wastewater treatment tank, gas generated by reaction of sewage and a medicament can be gathered in the enrichment cover, the molecular sieves are arranged on the upper side of the enrichment cover, when mixed gas passes through the molecular sieves, reaction gas is absorbed by the prefabricated molecular sieves, the two molecular sieves are arranged, after one group of molecular sieves is saturated, the other group of molecular sieves operate in a replacing manner, the pressure release valve of the saturated molecular sieves is opened, and the reaction gas can be decompressed and enters the storage tank to be collected, so that the waste of the reaction gas is avoided.

(3) According to the electroplating wastewater treatment tank, fixed impurities generated by reaction of sewage and a medicament can be enriched in the sedimentation tank, the enriched impurities in the sedimentation tank are extracted by the water pump, the enriched impurities are filtered through the filter element after being naturally precipitated in the collection bin, and the filtered sewage can flow back to the water inlet pipe for purification again, so that effective separation of the sewage and the impurities is realized, and the operation burden of cleaning the purification box is reduced.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a sectional view of an electroplating wastewater treatment tank according to the present invention;

FIG. 2 is a sectional view of a purification apparatus in an electroplating wastewater treatment tank according to the present invention;

FIG. 3 is a schematic perspective view of a partition plate in an electroplating wastewater treatment tank according to the present invention;

FIG. 4 is a sectional view showing the structure of a seal chamber in an electroplating wastewater treatment tank according to the present invention;

FIG. 5 is a sectional view showing the construction of a filter box in an electroplating wastewater treatment tank according to the present invention;

FIG. 6 is a schematic structural view of an aeration tube in an electroplating wastewater treatment tank according to the present invention;

FIG. 7 is a schematic structural view of a plugging plate in an electroplating wastewater treatment tank according to the present invention.

In the figure: 1. a purification box; 11. a sedimentation tank; 12. an enrichment hood; 13. a partition plate; 14. a diversion bevel; 15. a filtration pore; 16. a water inlet pipe; 17. a drain pipe; 2. a filtration system; 21. a water pump I; 22. a filter box; 23. a filter element; 24. a collection bin; 241. an evacuation valve; 25. a support; 26. concentric shafts; 27. a squeegee; 28. a paddle; 29. a second water pump; 3. an aeration system; 31. an air pump; 32. a pressurizing pipe; 33. a medicine adding bin; 34. a wind locking plate; 35. a rotating shaft; 36. sealing the cavity; 37. an aeration pipe; 371. an aeration hole; 38. an air inlet pipe; 4. a purification device; 41. a molecular sieve; 42. a bifurcated tube; 43. a diverter valve; 44. a plugging plate; 441. micropores; 45. a filler; 46. a pressure relief valve; 47. a connecting pipe; 48. and (7) storing the tank.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the electroplating wastewater treatment tank of the present invention comprises a purification box 1, a filtration system 2, an aeration system 3 and a purification device 4, wherein the bottom of the purification box 1 is provided with a plurality of aeration systems 3, the top of the purification box 1 is provided with a plurality of purification devices 4, wherein the aeration systems 3 and the purification devices 4 are communicated with each other, the filtration system 2 is fixedly connected with the output end of the purification box 1, the front side and the rear side of the purification box 1 are respectively and fixedly embedded with a water inlet pipe 16 and a water outlet pipe 17, the bottom wall of the purification box 1 is provided with at least two sedimentation tanks 11, the top wall of the purification box 1 is provided with at least two enrichment hoods 12, the sedimentation tanks 11 and the enrichment hoods 12 are correspondingly arranged, a partition plate 13 is fixedly embedded between the adjacent sedimentation tanks 11 and positioned on the inner wall of the purification box 1, and the middle part of the partition plate 13 is provided with a flow, the diversion inclined plane 14 is densely provided with the filtering holes 15, sewage flows in the forward direction, the filtering holes 15 block solid matters, the diversion inclined plane 14 can gradually guide the solid matters to move downwards, the blockage of the filtering holes 15 is avoided, and the sedimentation tank 11 and the enrichment cover 12 are both in conical structures and can accelerate the accumulation of the solid matters and the gas.

Specifically, filtration system 2 includes a water pump 21, rose box 22, filter core 23, collects storehouse 24, support 25, concentric shaft 26, scraper blade 27, paddle 28 and No. two water pumps 29, No. two water pump 29's input and drain pipe 17 are linked together, rose box 22's input is linked together through pipeline and each sedimentation tank 11, rose box 22's output then is linked together with a water pump 21's input, rose box 22 internal fixation inlays and is equipped with filter core 23 and support 25, wherein filter core 23 is located the front side of support 25, rose box 22's downside fixedly connected with collects storehouse 24, the bottom fixed mounting who collects storehouse 24 has blowoff valve 241, inlay through the bearing rotation in the support 25 and be equipped with concentric shaft 26, concentric shaft 26's front end outer wall detachably connected with scraper blade 27, the fixed cover in rear end outer wall of concentric shaft 26 is equipped with paddle 28, the filter element 23 is composed of a filling material and filter screens positioned on two sides of the filling material, the small hole structure of the filter screens can filter impurities, the filling material can be any one or a combination structure of a plurality of materials such as acrylic fibers, quartz sand, gravel, anthracite, cobblestone, manganese sand, magnetite filter material, shell filter material, foam filter beads, porcelain sand filter material, ceramsite, garnet filter material, medical stone filter material, sponge iron filter material, activated alumina balls, zeolite filter material, volcanic filter material, granular activated carbon, fiber balls, fiber bundle filter material, comet type fiber filter material and the like, so that purified wastewater after impurity removal can pass through the filter element 23 for secondary purification, the filter box 22 is of a combined structure and is composed of at least two shells and a connecting flange, the shell structure can be detached by detaching bolts on the connecting flange, and the filter element 23 can be conveniently cleaned or replaced.

Specifically, the aeration system 3 includes an air pump 31, a pressurization pipe 32, a dosing bin 33, an air locking plate 34, a rotating shaft 35, a sealing chamber 36, an aeration pipe 37 and an air inlet pipe 38, the aeration pipe 37 is fixedly embedded in the sedimentation tank 11, the air pump 31 is disposed in the middle of the air inlet pipe 38 and the pressurization pipe 32, the pressurization pipe 32 is communicated with the aeration pipes 37 through pipelines, a plurality of aeration holes 371 are disposed on the aeration pipe 37, the pressurization pipe 32 is further provided with the sealing chamber 36, the rotating shaft 35 is embedded in the sealing chamber 36, a plurality of air locking plates 34 are disposed on the outer wall of the rotating shaft 35 at equal intervals, the dosing bin 33 is fixedly connected to the upper side of the sealing chamber 36, when air flow passes through the pressurization pipe 32, the air locking plates 34 can be driven to dial materials, pneumatic chemical powder can be conveyed to the aeration pipe 37 for aeration, and the drugs in the dosing bin 33 can be inorganic aluminum sulfate, Ferrous sulfate, aluminum chloride, polyaluminium chloride, polyferric sulfate and the like, organic anions, non-ions, cationic polyacrylamide, sodium polyacrylate and the like, powder materials enter the purifying box 1 along with air flow and then are mixed with sewage immediately to generate physical or chemical reaction to generate fixed precipitation or gas overflow phenomenon, an air feeding pipeline is also arranged on the air inlet pipe 38, and when the air pressure in the air inlet pipe 38 is insufficient, air can be introduced into the air inlet pipe 38 to supplement the air pressure, so that the normal operation of the aeration process is ensured.

Specifically, the purification device 4 includes molecular sieves 41, bifurcated pipes 42, a reversing valve 43, a blocking plate 44, a filler 45, a pressure release valve 46, a connecting pipe 47 and a storage tank 48, two molecular sieves 41 are communicated between the bifurcated pipes 42, the molecular sieves 41 are communicated with the storage tank 48 through the connecting pipe 47, the pressure release valves 46 are installed on the connecting pipe 47, the reversing valves 43 are installed on the bifurcated pipes 42, the blocking plate 44 is fixedly embedded on the inner wall of the end portion of one of the bifurcated pipes 42, a plurality of micropores 441 are formed on the blocking plate 44, the filler 45 is arranged in the bifurcated pipe 42, the pore structure of the filler 45 can filter water molecules through gas separation, so that gas and liquid are separated, the separated gas enters the molecular sieves 41, and the gas generated by chemical reaction in the purification tank 1 can be absorbed by the preset molecular sieves 41, when the pressure of the molecular sieve 41 is reduced, the adsorbed gas can enter the storage tank 48 through the connecting pipe 47 again for purification and collection.

Specifically, the middle part of filter core 23 corresponds concentric shaft 26 and is provided with the perforation structure, it is located the front side of filter core 23 to collect storehouse 24, scraper blade 27 is hugged closely with filter core 23 front side end face, and rivers drive paddle 28 rotates, and then can drive concentric shaft 26 and scraper blade 27 and rotate, scrapes by scraper blade 27 and gets filter screen surface impurity to avoid the risk that the filter screen blockked up, collect storehouse 24 and be the infundibulate structure, make the pollutant can deposit under the action of gravity and collect storehouse 24 bottoms.

Specifically, all install water quality monitor on drain pipe 17 and a water pump 21's the output, a water pump 21's output and inlet tube 16 are linked together, and water quality monitor includes turbidity monitor, chlorine residue detector, acid-base monitor etc. and judges whether reach emission standard through the detection to quality of water, and the sewage after enrichment and the edulcoration filters the back through filter core 23, can flow back to in the inlet tube 16 again to purify once more.

Specifically, the sealed cavity 36 is a cylindrical cavity, the aeration hole 371 is arranged at the lower side of the aeration pipe 37, the upper part of the cylindrical cavity is communicated with the dosing bin 33, the opening size determines the material leakage speed, the lower part of the cavity is communicated with the pressurization pipe 32, and the aeration hole 371 arranged at the lower side of the aeration pipe 37 can avoid the risk of blockage of sediments.

Specifically, the bifurcated pipe 42 is of a Y-shaped structure, the bifurcated pipe 42 is respectively communicated with the enrichment cover 12 and the air inlet pipe 38, and the number of the molecular sieves 41 is at least two, so that when one molecular sieve 41 is used for adsorption filtration, the other molecular sieve 41 can be in a pressure relief state, and the reversing valve 43 controls the two molecular sieves 41 to sequentially rotate, so that uninterrupted adsorption and collection operation can be realized, and the treatment tank is ensured to be in a continuous operation state.

The working principle is that the second water pump 29 is a self-priming pump, negative pressure is formed by pumping air in the purification box 1, sewage is pumped into the purification box 1, different powder agents are added into the medicine adding bin 33, the air pump 31 is started, the air pump 31 guides the air flow into the pressurizing pipe 32, the air flow drives the air locking plate 34 to feed and take away powder materials, the powder materials enter the aeration pipe 37, after aeration is carried out through the aeration hole 371, chemical substances react with the sewage, impurities and bubbles are generated in the sewage, the impurities naturally precipitate at the bottom of the sedimentation tank 11 to form an impurity enrichment area, the bubbles float up to the enrichment cover 12, after passing through the filler 45 and the gas-liquid separator, mixed gas containing reaction gas passes through the molecular sieve 41, the gas prepared by adsorption reaction of the molecular sieve 41, after the adsorption of the molecular sieve 41 tends to saturation, the reversing valve 43 reverses, and the pressure relief valve 46 opposite to the molecular sieve 41 releases pressure, can collect reactant gas in storage jar 48, another molecular sieve 41 is opened relatively, take over last molecular sieve 41 and adsorb, the gas circulation that is not adsorbed by molecular sieve 41 enters into intake pipe 38 in, the retrieval and utilization, reducible air quantity and pollution condition, start a water pump 21, then can extract the impurity of enrichment in sedimentation tank 11 below, enrichment sewage is through collecting 24 natural sedimentation and filter core 23 filtration backs, purification sewage then flows back to inlet tube 16 retreatment again, impurity then is in collection 24 bottoms of storehouse portion pending.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electroplating wastewater treatment pool comprises a purification box (1), a filtering system (2), an aeration system (3) and a purification device (4), and is characterized in that the bottom of the purification box (1) is provided with a plurality of aeration systems (3), the top of the purification box (1) is provided with a plurality of purification devices (4), wherein the aeration systems (3) and the purification devices (4) are communicated with each other, and the filtering system (2) is fixedly connected with the output end of the purification box (1);

both sides are fixed respectively around purifying box (1) and are inlayed inlet tube (16) and drain pipe (17), be provided with two at least sedimentation tanks (11) on the diapire of purifying box (1), be provided with two at least enrichment covers (12) on stating the roof of purifying box (1), sedimentation tank (11) and enrichment cover (12) correspond the setting, and are adjacent it all fixes and inlays and is equipped with division board (13) just to be located purifying box (1) inner wall between sedimentation tank (11), the middle part of division board (13) all is provided with water conservancy diversion inclined plane (14), it is provided with filtration pore (15) all to distribute densely on water conservancy diversion inclined plane (14).

2. A plating wastewater treatment tank according to claim 1, characterized in that: the filtering system (2) comprises a first water pump (21), a filtering box (22), a filter element (23), a collecting bin (24), a support (25), a concentric shaft (26), a scraper (27), a paddle (28) and a second water pump (29), wherein the input end of the second water pump (29) is communicated with a drain pipe (17), the input end of the filtering box (22) is communicated with each sedimentation tank (11) through a pipeline, the output end of the filtering box (22) is communicated with the input end of the first water pump (21), the filter element (23) and the support (25) are embedded in the filtering box (22) in a fixed mode, the filter element (23) is located on the front side of the support (25), the collecting bin (24) is fixedly connected to the lower side of the filtering box (22), an emptying valve (241) is fixedly installed at the bottom of the collecting bin (24), the shaft (26) is embedded in the support (25) through rotation of a bearing, the outer wall of the front end of the concentric shaft (26) is detachably connected with a scraper (27), and the outer wall of the rear end of the concentric shaft (26) is fixedly sleeved with a paddle (28).

3. A plating wastewater treatment tank according to claim 1, characterized in that: aeration systems (3) include air pump (31), forcing pipe (32), add medicine storehouse (33), lock aerofoil (34), pivot (35), sealed chamber (36), aeration pipe (37) and intake pipe (38), aeration pipe (37) are fixed to inlay and establish in sedimentation tank (11), air pump (31) set up the middle part in intake pipe (38) and forcing pipe (32), forcing pipe (32) are linked together through pipeline and each aeration pipe (37), a plurality of aeration hole (371) have been seted up on aeration pipe (37), still be provided with sealed chamber (36) on forcing pipe (32), sealed chamber (36) internal rotation is inlayed and is equipped with pivot (35), pivot (35) outer wall equidistance is provided with a plurality of lock aerofoil (34), the upside fixedly connected with of sealed chamber (36) adds medicine storehouse (33).

4. A plating wastewater treatment tank according to claim 1, characterized in that: purification device (4) include molecular sieve (41), bifurcated pipe (42), switching-over valve (43), shutoff board (44), filler (45), relief valve (46), connecting pipe (47) and storage jar (48), two the intercommunication has two molecular sieve (41) between bifurcated pipe (42), molecular sieve (41) all are linked together through connecting pipe (47) and storage jar (48), all install relief valve (46) on connecting pipe (47), all install switching-over valve (43) on bifurcated pipe (42), one of them bifurcated pipe (42) tip inner wall is fixed to be inlayed and is equipped with shutoff board (44), a plurality of micropores (441) have been seted up on shutoff board (44), should be provided with filler (45) in bifurcated pipe (42).

5. A plating wastewater treatment tank according to claim 2, characterized in that: the middle part of the filter element (23) is provided with a perforation structure corresponding to the concentric shaft (26), the collection bin (24) is positioned at the front side of the filter element (23), and the scraper (27) is clung to the end face of the front side of the filter element (23).

6. A plating wastewater treatment tank according to claim 1 or 2, characterized in that: the water quality monitoring device is characterized in that the output ends of the drain pipe (17) and the first water pump (21) are respectively provided with a water quality monitoring instrument, and the output end of the first water pump (21) is communicated with the water inlet pipe (16).

7. A plating wastewater treatment tank according to claim 3, characterized in that: the sealed cavity (36) is a cylindrical cavity, and the aeration hole (371) is arranged at the lower side of the aeration pipe (37).

8. An electroplating wastewater treatment tank according to claim 4, characterized in that: the branch pipes (42) are Y-shaped structures, and the two branch pipes (42) are respectively communicated with the enrichment cover (12) and the air inlet pipe (38).