CN209835823U - Pickling waste water treatment system - Google Patents
Pickling waste water treatment system Download PDFInfo
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- CN209835823U CN209835823U CN201920404118.9U CN201920404118U CN209835823U CN 209835823 U CN209835823 U CN 209835823U CN 201920404118 U CN201920404118 U CN 201920404118U CN 209835823 U CN209835823 U CN 209835823U
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Abstract
The utility model discloses a pickling wastewater treatment system, which comprises a pickling wastewater adjusting tank, a PH adjusting tank, a coagulation reaction tank, a sedimentation tank, an integrated air flotation machine, a middle water tank, a tubular membrane device, an ion exchange resin tower and a reuse water tank which are arranged in sequence; a perforated aeration pipe is arranged in the wastewater adjusting tank; the sediment pipe of integration air supporting machine links to each other with the sludge impoundment, and the row's mud mouth in coagulation reaction pond links to each other with the sludge impoundment, and the sludge impoundment passes through the diaphragm pump and links to each other with plate and frame filter press, and the filtrating export of plate and frame filter press links to each other with the waste water equalizing basin. The utility model discloses increase behind the pipe membrane processing system, take up an area of less and can realize the continuous concentration of waste water, compare processing system in the past, the phenomenon of dissolving can not appear in the turn, and the effect of getting rid of metal ion is very reinforcing.
Description
Technical Field
The utility model relates to a pickling effluent disposal system.
Background
The existing treatment system for workshop pickling wastewater is mainly a treatment system for steel pickling wastewater, the effect of removing metal ions is poor, the occupied area of the system is large, and treated water cannot be recycled. Moreover, the pH value of the precipitate formed by removing the metal ions is not well controlled, most hydroxide precipitates are amphoteric precipitates, and the precipitate is dissolved due to too high alkalinity to form a reverse dissolution phenomenon, so that trace ions cannot be removed, and the metal ion removing capacity of a treatment system is not high; in addition, the arrangement of the defoaming and slag scraping plate of the integrated air floatation machine is not reasonable enough, so that some formed floating slag can fall back to the air floatation tank again in the slag scraping process.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a pickling effluent disposal system, take up an area of less and can realize the continuous concentration of waste water, compare processing system in the past, the phenomenon of dissolving can not appear on the contrary, and the effect of getting rid of metal ion is very reinforcing.
In order to achieve the purpose, the technical scheme of the utility model is to design a pickling wastewater treatment system, which comprises a pickling wastewater adjusting tank, a PH adjusting tank, a coagulation reaction tank, a sedimentation tank, an integrated air floatation machine, an intermediate water tank, a tubular membrane device, an ion exchange resin tower and a reuse water tank which are arranged in sequence; a perforated aeration pipe is arranged in the wastewater adjusting tank; the sediment pipe of integration air supporting machine links to each other with the sludge impoundment, and the row's mud mouth in coagulation reaction pond links to each other with the sludge impoundment, and the sludge impoundment passes through the diaphragm pump and links to each other with plate and frame filter press, and the filtrating export of plate and frame filter press links to each other with the waste water equalizing basin. The tubular membrane device is additionally arranged after the precipitation air floatation, so that the occupied area is small, and the ion removal capacity is enhanced, the treated water can be recycled (can be mixed with clear water to be used as clear liquid to be added into a treatment system, and then is continuously treated), the continuous concentration of the wastewater can be realized, the anti-dissolution phenomenon can not occur compared with the conventional treatment system, and the effect of removing metal ions is greatly enhanced; the perforated aeration pipe can be arranged to obtain enough dissolved oxygen in the process of forcibly transferring oxygen in the air into the liquid. Can prevent suspension in the tank from sinking, and oxidize ferrous ions in the wastewater into ferrous ions while homogenizing and homogenizingFerric ions. The coagulant can aggregate colloidal particles and micro suspended matters in water, has flocculation and coagulation effects, and can remove toxic heavy metal ions such as Pb, Cr and the like in the acid pickling wastewater. The flocculant reduces the potential of the flocculant by utilizing the fact that groups with positive (negative) electric property are close to particles or granules which have negative (positive) electric property and are difficult to separate in the acid washing wastewater, so that the flocculant is in an unstable state, and the particles are concentrated by utilizing the polymerization property of the flocculant and are separated by a physical or chemical method; the heavy metal scavenger can react with Cu in wastewater2+、Cd2+、Hg2+、Pb2+、Mn2+、Ni2+、Zn2+、Cr3+Various heavy metal ions are subjected to chemical reaction, and insoluble flocculent precipitates which have low water content and are easy to filter and remove are quickly generated in a short time; the arrangement of the middle water tank is convenient for the sediment, suspended matters and the like in the sewage to naturally precipitate a part, and the final sewage is easy to treat a few through a plurality of middle tanks. The difficulty of directly treating sewage is reduced, and the treatment cost is reduced. The sewage treatment device has the advantages of regulating the sewage, ensuring the uniformity and stability of subsequent treatment, having small impact on the whole treatment system and ensuring the normal operation. The integrated air floatation equipment can utilize micro bubbles in dissolved air water generated by the dissolved air system to be bonded with suspended matter flocs in the water, the suspended matter rises to the water surface along with the micro bubbles to form scum, so that the suspended flocs in the water are removed, the integrated air floatation equipment organically combines an air tank, a dissolved air water pump, a dosing equipment and an air compressor or an ejector into a whole, the occupied area is small, the operation is convenient, a foundation is not needed, the installation time can be shortened, and the workload is reduced.
The further technical proposal is that a pump is arranged on a pipeline connecting the wastewater adjusting tank and the PH adjusting tank; a pump is arranged on a pipeline connecting the intermediate water tank and the tubular membrane device; a pump is arranged on a recycling pipeline of the recycling water tank, one end of the recycling pipeline is connected with the recycling water tank, and the other end of the recycling pipeline is connected with the waste water regulating tank. The height of the wastewater adjusting tank is lower than the treatment height of pickling wastewater in a workshop, the height of the coagulation reaction tank is lower than that of the PH adjusting tank, the height of the sedimentation tank is lower than that of the coagulation reaction tank, the connecting position of a water inlet pipe of the integrated air flotation machine and the sedimentation tank is positioned at the height of a supernatant part of the sedimentation tank, and the height of a water outlet pipe of the integrated air flotation machine is higher than that of an intermediate water tank; the height is set so as to form self-flowing drainage; the height of the PH adjusting tank is higher than that of the wastewater adjusting tank.
The further technical proposal is that a clear water inlet pipe is connected on the waste water adjusting tank. When the concentration of the treated wastewater is higher than that which can be treated by the system, clear water is added into the system by connecting a tap water pipe (and because the treatment system has superior capability of treating metal ions, the treated water can be mixed into the clear water to be used as diluted wastewater, so that the use of the clear water can be reduced), so that the wastewater can be used in the treatment system.
The treatment process of the pickling wastewater treatment system is as follows: the workshop pickling washing wastewater automatically flows into a pickling wastewater adjusting tank, a perforated aeration pipe is arranged in the pickling wastewater adjusting tank, ferrous ions in the wastewater are oxidized into ferric ions while homogenizing and equalizing, then the wastewater is lifted to a pH adjusting tank, sodium hydroxide is added, the pH value is adjusted to 9-10, and Fe3+With OH-Combined into Fe (OH)3Precipitating, then entering a coagulation reaction tank, adding a coagulant, a heavy metal capture agent and a polymeric flocculant for full coagulation reaction, performing mud-water separation in the sedimentation tank, allowing the supernatant to flow automatically to an integrated air floatation machine, adding the coagulant and the polymeric flocculant, further removing metal ions, then performing full reaction in the integrated air floatation machine, allowing the supernatant passing through an air floatation device to flow automatically to an intermediate water tank, adjusting the pH value, allowing the supernatant to enter a tubular membrane treatment system for strengthening treatment, adsorbing the remaining heavy metal ions by ion exchange resin, ensuring that all metal ions in the wastewater stably reach the standard and are discharged, and recycling the wastewater to a production workshop. Sludge produced by the first-order reaction and scum produced by air flotation are discharged to a sludge pond, and are pumped into a plate-and-frame filter press through a diaphragm pump to be dewatered, and the dewatered sludge is legally transported and disposed.
The technical scheme is that a scraper in the integrated air floatation machine is hinged to a residue scraping sliding plate, the residue scraping sliding plate is arranged on a slide way on the inner wall of a box body of the air floatation machine in a sliding mode, a driving motor and a speed reducer are fixedly arranged on the inner wall of the box body of the air floatation machine, the driving motor is connected with the speed reducer, a first gear is fixedly arranged on an output shaft of the speed reducer, a first rack is meshed with the first gear, and the first rack is fixedly connected with the residue scraping sliding plate. The first rack is arranged in the channel steel-shaped limiting portion in a sliding mode, and the limiting portion is fixedly arranged on the inner wall of the air flotation machine box body.
A second driving motor and a second speed reducer are fixedly arranged on the slag scraping sliding plate, a second gear is fixedly arranged on an output shaft of the second speed reducer, a second rack is meshed with the second gear and is fixedly connected with a scraper, a spring is fixedly connected to the end part, far away from the second rack, of the scraper, and the other end of the spring is fixedly connected to the lower surface of the slag scraping sliding plate; the end part of the scraper far away from the second rack is fixedly connected with a scum anti-falling net made of elastic materials. The scum anti-falling net is made of elastic rubber; through set up the dross net that falls of preventing at the scraper blade end, can prevent when scraping the sediment because the scraper blade runs into the dross and a small amount of dross microbubble that lead to break and cause the suspended solid floc to fall the aquatic again, can maximize slagging-off, guarantee the treatment effeciency of integration air supporting machine.
The action process is as follows:
after scum is formed in the integrated air flotation machine, the second driving motor acts to drive the second rack to move downwards and drive the scraper to rotate (the initial state of the scraper is in a nearly horizontal state due to the action of the spring, and the scum anti-falling net is in a state nearly vertical to the horizontal plane due to the arrangement of an included angle between the scum anti-falling net and the scraper, so that the influence on the formation of the scum can be minimized and reduced, namely, the scum can not be blocked by the scum anti-falling net but can not be scraped away by the scraper in the floating and rising process because the scum anti-falling net is not vertically arranged until the scum anti-falling net is nearly horizontal, then the first driving motor acts, the first rack translates to drive the scum scraping sliding plate to translate, the scum is scraped into the scum falling groove by the scraper, and because of the arrangement of the scum anti-falling net, even if part of scum is cracked due to micro bubbles which are touched by the scraper in the scum scraping process to, however, the floating slag anti-falling net is held below to prevent suspended matter flocs from falling back into water again, and the floating slag anti-falling net is made of elastic materials, so that the floating slag anti-falling net shrinks when the scraper contacts the scraper, and the floating slag anti-falling net can enter the floating slag groove with the suspended matter flocs after the floating slag and micro bubbles are broken when the scraper contacts the scraper under the condition of reasonable height setting.
The utility model has the advantages and the beneficial effects that: after the tubular membrane treatment system is added, the occupied area is small, the continuous concentration of the wastewater can be realized, the phenomenon of back dissolution is avoided compared with the conventional treatment system, and the effect of removing metal ions is greatly enhanced; the tubular membrane device is additionally arranged after the precipitation air floatation, so that the occupied area is small, and the ion removal capacity is enhanced, the treated water can be recycled (can be mixed with clear water to be used as clear liquid to be added into a treatment system, and then is continuously treated), the continuous concentration of the wastewater can be realized, the anti-dissolution phenomenon can not occur compared with the conventional treatment system, and the effect of removing metal ions is greatly enhanced; the perforated aeration pipe can be arranged to obtain enough dissolved oxygen in the process of forcibly transferring oxygen in the air into the liquid. Can prevent suspension in the tank from sinking, and can oxidize ferrous ions in the wastewater into ferric ions while achieving uniform homogenization. The coagulant can aggregate colloidal particles and micro suspended matters in water, has flocculation and coagulation effects, and can remove toxic heavy metal ions such as Pb, Cr and the like in the acid pickling wastewater. The flocculant reduces the potential of the flocculant by utilizing the fact that groups with positive (negative) electric property are close to particles or granules which have negative (positive) electric property and are difficult to separate in the acid washing wastewater, so that the flocculant is in an unstable state, and the particles are concentrated by utilizing the polymerization property of the flocculant and are separated by a physical or chemical method; the heavy metal catching agent can carry out chemical reaction with various heavy metal ions in the wastewater, such as Cu2+, Cd2+, Hg2+, Pb2+, Mn2+, Ni2+, Zn2+, Cr3+ and the like, and can rapidly generate insoluble flocculent precipitate with low water content and easy filtration and removal in a short time; the arrangement of the middle water tank is convenient for the sediment, suspended matters and the like in the sewage to naturally precipitate a part, and the final sewage is easy to treat a few through a plurality of middle tanks. The difficulty of directly treating sewage is reduced, and the treatment cost is reduced. The sewage treatment device has the advantages of regulating the sewage, ensuring the uniformity and stability of subsequent treatment, having small impact on the whole treatment system and ensuring the normal operation. When the concentration of the treated wastewater is higher than that which can be treated by the system, clear water is added into the system by connecting a tap water pipe (and because the treatment system has superior capability of treating metal ions, the treated water can be mixed into the clear water to be used as diluted wastewater, so that the use of the clear water can be reduced), so that the wastewater can be used in the treatment system. The scum anti-falling net is made of elastic rubber; through set up the dross net that falls of preventing at the scraper blade end, can prevent when scraping the sediment because the scraper blade runs into the dross and a small amount of dross microbubble that lead to break and cause the suspended solid floc to fall the aquatic again, can maximize slagging-off, guarantee the treatment effeciency of integration air supporting machine.
Drawings
FIG. 1 is a flow chart of the treatment process of the pickling wastewater treatment system of the utility model;
FIG. 2 is a schematic structural view of the integrated air flotation machine of the present invention;
FIG. 3 is a top view of FIG. 2;
fig. 4 is a schematic view of the second driving machine of fig. 2 after operation.
In the figure: 1. a squeegee; 2. a slag scraping sliding plate; 3. a box body of the air floatation machine; 4. a slideway; 5. a drive motor; 6. a first gear; 7. a first rack; 8. the scum is prevented from falling into the net; 9. a second drive motor; 10. a second gear; 11. a second rack; 12. a spring.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 4 (it should be clear that the attached drawings are only schematic diagrams, for example, the length of the first rack can be longer, and a hole allowing the first rack to pass through is correspondingly arranged on the air flotation machine box body), the utility model relates to an acid pickling wastewater treatment system, which comprises an acid pickling wastewater adjusting tank, a PH adjusting tank, a coagulation reaction tank, a sedimentation tank, an integrated air flotation machine, an intermediate water tank, a tubular membrane device, an ion exchange resin tower and a reuse water tank which are arranged in sequence; a perforated aeration pipe is arranged in the wastewater adjusting tank; the sediment pipe of integration air supporting machine links to each other with the sludge impoundment, and the row's mud mouth in coagulation reaction pond links to each other with the sludge impoundment, and the sludge impoundment passes through the diaphragm pump and links to each other with plate and frame filter press, and the filtrating export of plate and frame filter press links to each other with the waste water equalizing basin. A pump is arranged on a pipeline connecting the wastewater adjusting tank and the PH adjusting tank; a pump is arranged on a pipeline connecting the intermediate water tank and the tubular membrane device; a pump is arranged on a recycling pipeline of the recycling water tank, one end of the recycling pipeline is connected with the recycling water tank, and the other end of the recycling pipeline is connected with the waste water regulating tank. The wastewater adjusting tank is also connected with a clear water inlet pipe.
Scraper blade 1 among the integration air supporting machine articulates on scraping sediment slide 2, scrapes sediment slide 2 and slides and set up on the slide 4 of 3 inner walls of air supporting machine box, fixedly on 3 inner walls of air supporting machine box set up driving motor 5 and speed reducer, and driving motor 5 links to each other with the speed reducer, fixedly on the output shaft of speed reducer sets up first gear 6, is equipped with first rack 7 with the meshing of first gear 6, first rack 7 with scrape sediment slide 2 fixed connection. A second driving motor 9 and a second speed reducer are fixedly arranged on the slag scraping sliding plate 2, a second gear 10 is fixedly arranged on an output shaft of the second speed reducer, a second rack 11 is meshed with the second gear 10, the second rack 11 is fixedly connected with the scraper plate 1, the end part of the scraper plate 1 far away from the second rack 11 is fixedly connected with a spring 12, and the other end of the spring 12 is fixedly connected to the lower surface of the slag scraping sliding plate 2; the end of the scraper 1 far away from the second rack 11 is fixedly connected with a scum anti-falling net 8 made of elastic material.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A pickling wastewater treatment system is characterized by comprising a pickling wastewater adjusting tank, a PH adjusting tank, a coagulation reaction tank, a sedimentation tank, an integrated air flotation machine, an intermediate water tank, a tubular membrane device, an ion exchange resin tower and a reuse water tank which are arranged in sequence; a perforated aeration pipe is arranged in the wastewater adjusting tank; the sediment pipe of integration air supporting machine links to each other with the sludge impoundment, and the row's mud mouth in coagulation reaction pond links to each other with the sludge impoundment, and the sludge impoundment passes through the diaphragm pump and links to each other with plate and frame filter press, and the filtrating export of plate and frame filter press links to each other with the waste water equalizing basin.
2. The pickling wastewater treatment system of claim 1, wherein a pump is disposed on a pipeline connecting the wastewater adjusting tank and the pH adjusting tank; a pump is arranged on a pipeline connecting the intermediate water tank and the tubular membrane device; a pump is arranged on a recycling pipeline of the recycling water tank, one end of the recycling pipeline is connected with the recycling water tank, and the other end of the recycling pipeline is connected with the waste water regulating tank.
3. The acid pickling wastewater treatment system of claim 2, wherein a clean water inlet pipe is further connected to the wastewater conditioning tank.
4. The acid pickling wastewater treatment system as claimed in claim 3, wherein the scraper of the integrated air flotation machine is hinged to a residue scraping slide plate, the residue scraping slide plate is slidably disposed on a slide way on the inner wall of the air flotation machine box, a driving motor and a speed reducer are fixedly disposed on the inner wall of the air flotation machine box, the driving motor is connected with the speed reducer, a first gear is fixedly disposed on an output shaft of the speed reducer, a first rack is engaged with the first gear, and the first rack is fixedly connected with the residue scraping slide plate.
5. The acid pickling wastewater treatment system according to claim 4, wherein the slag scraping sliding plate is fixedly provided with a second driving motor and a second speed reducer, an output shaft of the second speed reducer is fixedly provided with a second gear, a second rack is meshed with the second gear and is fixedly connected with the scraper, the end part of the scraper, far away from the second rack, is fixedly connected with a spring, and the other end of the spring is fixedly connected with the lower surface of the slag scraping sliding plate; the end part of the scraper far away from the second rack is fixedly connected with a scum anti-falling net made of elastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920404118.9U CN209835823U (en) | 2019-03-28 | 2019-03-28 | Pickling waste water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920404118.9U CN209835823U (en) | 2019-03-28 | 2019-03-28 | Pickling waste water treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN209835823U true CN209835823U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920404118.9U Active CN209835823U (en) | 2019-03-28 | 2019-03-28 | Pickling waste water treatment system |
Country Status (1)
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|---|---|
| CN (1) | CN209835823U (en) |
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2019
- 2019-03-28 CN CN201920404118.9U patent/CN209835823U/en active Active
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