CN212504165U - Precipitation reaction device for wastewater treatment - Google Patents
Precipitation reaction device for wastewater treatment Download PDFInfo
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- CN212504165U CN212504165U CN202020450572.0U CN202020450572U CN212504165U CN 212504165 U CN212504165 U CN 212504165U CN 202020450572 U CN202020450572 U CN 202020450572U CN 212504165 U CN212504165 U CN 212504165U
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- settling
- precipitation
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- 238000001556 precipitation Methods 0.000 title claims abstract description 106
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 98
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 19
- 238000004062 sedimentation Methods 0.000 claims abstract description 68
- 239000002351 wastewater Substances 0.000 claims abstract description 48
- 239000002244 precipitate Substances 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 44
- 239000013049 sediment Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000008394 flocculating agent Substances 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000010842 industrial wastewater Substances 0.000 abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 27
- 239000012716 precipitator Substances 0.000 description 16
- 238000010992 reflux Methods 0.000 description 13
- 239000007790 solid phase Substances 0.000 description 11
- 235000011121 sodium hydroxide Nutrition 0.000 description 9
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 8
- 229910001634 calcium fluoride Inorganic materials 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 8
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 8
- 229940007718 zinc hydroxide Drugs 0.000 description 8
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 8
- 238000000926 separation method Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000001139 pH measurement Methods 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- -1 fluorine ions Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001453 nickel ion Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006115 defluorination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- HVTHJRMZXBWFNE-UHFFFAOYSA-J sodium zincate Chemical compound [OH-].[OH-].[OH-].[OH-].[Na+].[Na+].[Zn+2] HVTHJRMZXBWFNE-UHFFFAOYSA-J 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model discloses a precipitation reaction device for waste water treatment, it contains precipitation reaction jar, settling cask, half cone sedimentation tank, the precipitation reaction jar is fixed on device upper portion, and its top is fixed with the agitator, the (mixing) shaft of agitator extends along precipitation reaction jar body axis downwardly directed the jar is internal, the precipitation reaction jar is supported three and separates the version top lieing in the settling cask, three baffles divide into four bibliographic categories branch with the space of settling cask inner chamber, settling cask below connect two half cone sedimentation tanks. The method is characterized in that the required precipitant is firstly mixed with the generated precipitate in the same part and then added into the wastewater to be treated for precipitation reaction. Compared with the prior art, the utility model discloses a precipitation reaction device has precipitation reaction effectual, do not need flocculating agent, processing cost low, attract impurity few, equipment structure is simple, be difficult to take place to block up and trouble, the place occupies characteristics such as few, very is fit for in industrial waste water's precipitation treatment.
Description
Technical Field
The utility model relates to a precipitation reaction device for waste water treatment, which can be used for the precipitation reaction process of industrial waste water treatment, and belongs to the technical field of environmental protection.
Background
In the treatment process of industrial wastewater, a precipitator is often added to convert pollutants in the wastewater into precipitates for removal through precipitation reaction. In order to facilitate the solid-liquid separation of the pollutant solution converted into precipitate from the aqueous phase, a flocculating agent is often added, which increases the treatment cost and introduces more impurities into the wastewater. And after the precipitation reaction is finished, the solid-liquid precipitation separation of the wastewater is required. The existing common solid-liquid settling separation method is to make the wastewater flow through an inclined plate settling tank along the horizontal direction, and the inclined plate settling tank in the horizontal direction usually occupies a large area and is not suitable for wastewater treatment in areas with tense land.
In order to solve the problem of excessive occupied area, various integrated devices of precipitation reaction and sedimentation separation are proposed in a plurality of patents at present, but the devices are generally complex and large in structure, and fillers are often required to be added in the devices to enhance the efficiency of solid-liquid separation, and the fillers are easily blocked by precipitation and difficult to clean, so that various problems are caused in the using process of the devices. The method using the devices at the same time still needs to add the flocculating agent, and the problems of higher treatment cost and more introduced impurities cannot be solved. The utility model discloses a just put forward in order to solve these problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an integrated device for waste water treatment's precipitation reaction, through the precipitation backward flow that has generated a part, mix with the precipitant earlier, add intensive mixing in the middle of the waste water in the precipitation retort of integrated device top again, make the pollutant in the waste water take place precipitation reaction with the precipitant of adsorbing on original precipitation crystalline grain, the precipitation of newly generating grows on original precipitation crystalline grain promptly, form the precipitation of great crystalline grain, the formation of colloidal particle has been avoided, settle easily, therefore need not to add the coagulant and can carry out the sedimentation separation. After the precipitation reaction is finished, the material enters a settling tank below the integrated device, the material is subjected to repeated up-and-down backflow to form two semi-conical settling ponds, the solid-phase sediment sinks below the settling tank, and clarified liquid flows out of an outlet above the settling tank. Thereby effectively solving the defects of the prior various precipitation reaction devices.
The utility model discloses realize that its purpose technical scheme does:
the utility model provides a precipitation reaction device for waste water treatment, its contains precipitation reaction jar, settling cask, half toper sedimentation tank, the precipitation reaction jar is fixed on device upper portion, and its top is fixed with the agitator, the (mixing) shaft of agitator extends along precipitation reaction jar body axis downwardly directed to the jar is internal, the precipitation reaction jar is supported and is being located three partition boards tops in the settling cask, three partition boards are with the spatial separation of settling cask inner chamber four bibliographic categories branch. And two semi-conical settling tanks are connected below the settling tank. And a sedimentation outlet is respectively arranged below the two semi-conical sedimentation tanks and is connected with a sedimentation return pipe and a sedimentation discharge pipe. The sediment return pipe pass through the line mixer and link to each other with the precipitant input tube, the line mixer mixes behind the sediment of backward flow and the precipitant links to each other with the waste water input tube through the ejector, the ejector pass through the pipeline of top and link to each other with the lower material import of precipitation retort. There is the material export the top of precipitation reaction jar, there is the material export the top of precipitation reaction jar and links to each other with the space of settling cask one side, the export of waste water clear solution after the space top of the opposite side of settling cask is handled, and whole device supports on the base through the several device stabilizer blade of installing in settling cask barrel and two half cone sedimentation tank junctions.
In this scheme, waste water is gone into from waste water input pipeline pump through the water pump, waste water input pipeline inhales from precipitation back flow and precipitant input tube with the precipitant that has generated and need to add through the venturi ejector, deposit in the back flow before inhaling and the precipitant in the precipitant input tube have mixed in the pipe mixer, waste water, the backward flow is deposited, the material that the precipitant mixes through the venturi ejector gets into the precipitation reaction jar from precipitation reaction jar lower part and fully stirs the mixture, pollutant in the waste water takes place precipitation reaction and is detached with the precipitant that adsorbs on original precipitation crystalline grain surface, the pollutant generates new deposit and grows on the surface of original deposit, form great crystalline grain. The reacted materials enter the space on one side of the settling tank through an outlet on the upper part of the settling tank, then flow downwards into the lower part of the side partition plate, enter the adjacent space through the semi-conical settling tank, flow upwards through an outlet on the upper part of the middle partition plate, flow downwards into the semi-conical settling tank on the lower part of the other side partition plate, enter the adjacent space, and flow upwards out of an outlet of the settling tank. Because the solid phase precipitate particles in the material are large and are easy to settle, in the process of repeatedly refluxing the material up and down, the solid phase precipitate is completely settled and enters two semi-conical sedimentation tanks, and only the treated clear liquid flows out from the outlet of the sedimentation tank.
Further, the stirrer is fixed on the top of the precipitation reaction tank body through a stirrer support.
Further, the stirring blades of the stirrer, which are inclined upwards along the stirring direction, push the reaction materials to rotate downwards and towards the periphery simultaneously when stirring.
Furthermore, the upper parts of two of the side surfaces of the three partition plates are connected to the bottom of the sedimentation reaction tank to support the reaction tank, and the lower parts of the three partition plates respectively span the upper parts of the two semi-conical sedimentation tanks.
Furthermore, the spaces of two adjacent settling tanks separated by two partition plates on the side surface are communicated through a semi-conical sedimentation tank below the two adjacent settling tanks, and materials cannot pass through the upper parts of the partition plates and only can pass through the lower parts of the partition plates.
Furthermore, two sides above one of the three partition plates are connected to the bottom of the sedimentation reaction tank to support the reaction tank, the middle of the three partition plates is provided with an opening, and the lower part of the three partition plates is connected to the upper part of the boundary of the two semi-conical sedimentation tanks.
Further, the boundary of the two semi-conical settling tanks is located on one diameter of the bottom of the settling tank.
Furthermore, the adjacent spaces of two settling tanks which are separated from each other in the middle of the three partition plates are connected through the opening above the partition plates, and materials cannot pass through the lower parts of the partition plates and only can pass through the opening above the partition plates.
Further, the baffle all is parallel with the axis of jar body.
Furthermore, the precipitation reaction tank is positioned on one side of the inner part of the settling tank body, the diameter of the precipitation reaction tank is smaller than that of the settling tank, and a material outlet of the precipitation reaction tank is arranged above the other side of the settling tank.
Compared with the prior art, the utility model discloses a precipitation reaction device has precipitation reaction effectual, do not need flocculating agent, processing cost low, attract impurity few, equipment structure is simple, be difficult to take place to block up and trouble, the place occupies characteristics such as few, very is fit for in industrial waste water's precipitation treatment.
Drawings
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
In the figure: 1-a precipitation reaction tank; 2-a settling tank; 3, 4-a semi-conical sedimentation tank; 5-stirring shaft; 6-stirrer support; 7-side baffle plate; 8-a middle partition board; 9-side baffle plate; 10-a material inlet of a precipitation reaction tank; 11-a material outlet of the precipitation reaction tank; 12-a settling calandria valve; 13, 14-sedimentation outlet valve; 15-settling return line valve; 16-precipitant input tube valve; 17-a check valve; 18-a line mixer; 19-a venturi jet pipe; 20-a precipitation reflux pipe; 21-precipitant input tube; 22-wastewater input pipe; 23-a wastewater input pump; 24-a waste water input port; 25-a treated wastewater discharge port; 26-a precipitant input port; 27-device feet; 28-sediment discharge port; 29-sediment drain pump; 30-settling calandria; 31-stirring blade.
Detailed Description
The following further describes the embodiments and effects of the present invention with reference to the specific examples and drawings.
As shown in fig. 1, a precipitation reaction device for wastewater treatment, it contains precipitation reaction tank 1, settling cask 2, half toper sedimentation tank 3, 4, precipitation reaction tank 1 fixes on device upper portion, and its top is fixed with the agitator, the (mixing) shaft 5 of agitator extends downwards along 1 jar of body axial line of precipitation reaction tank in the jar body, precipitation reaction tank 1 is supported and is being located three partition boards 7, 8, 9 in the settling cask above, three partition boards 7, 8, 9 divide into four parts with the space of 2 inner chambers of settling cask. Two semi-conical sedimentation tanks 4 and 5 are connected below the sedimentation tank 2. And a sedimentation outlet is respectively arranged below the two semi-conical sedimentation tanks 4 and 5 and is connected with a sedimentation return pipe 20 and a sedimentation discharge pipe 30. The sedimentation return pipe 20 is connected with a precipitant input pipe 21 through a pipe mixer 18, the pipe mixer 18 is connected with a waste water input pipe 22 through an ejector 19 after mixing the backflow sedimentation and the precipitant, and the ejector is connected with a material inlet 10 below the sedimentation reaction tank through a pipeline above the ejector. There is material export 11 the top of precipitation reaction jar, there is material export 11 the top of precipitation reaction jar and links to each other with the space of 2 one sides of settling cask, the export 25 of waste water clear solution after the space top of the opposite side of settling cask is handled, and whole device supports on the base through the several device stabilizer blade 27 of installing in settling cask barrel and two half cone sedimentation tank junctions.
In the scheme, waste water is pumped from a waste water input pipeline 22 through a water pump 23, the waste water input pipeline sucks generated sediment and a precipitator to be added from a sediment return pipe 20 and a precipitator input pipe 21 through a Venturi ejector 19, the sediment in the sediment return pipe 20 and the precipitator in the precipitator input pipe 21 are mixed in a pipeline mixer 18 before the suction, the waste water, the reflux sediment and the precipitator are mixed through the Venturi ejector, materials enter a sediment reaction tank 1 from an inlet 10 at the lower part of the sediment reaction tank 1 and are fully stirred and mixed, pollutants in the waste water and the precipitator adsorbed on the surface of original sediment crystal grains are subjected to precipitation reaction and removed, new sediment generated by the pollutants grows on the surface of the original sediment, and larger crystal grains are formed. The reacted materials enter the space at one side of the settling tank through an outlet 11 at the upper part of the settling tank, then flow downwards into the lower part of a partition plate 7 at the side, enter the adjacent space through a semi-conical settling pond 4, flow upwards through an outlet at the upper part of a middle partition plate 8, flow downwards into a semi-conical settling pond 3 at the lower part of a partition plate 9 at the other side, enter the adjacent space, and flow upwards out of an outlet 25 of the settling tank. Because the solid phase precipitation particles in the material are large and easy to settle, in the process of repeatedly refluxing the material up and down, the solid phase precipitation completely settles and enters the two semi-conical sedimentation tanks 3/4, and only the treated clear liquid is left at the outlet 25 of the sedimentation tank to flow out.
Further, the stirrer is fixed on the top of the precipitation reaction tank body 1 through a stirrer support 6.
Further, the stirring blade 31 of the stirrer inclined upward in the stirring direction pushes the reaction materials while rotating downward and in the circumferential direction while stirring.
Furthermore, the upper parts of the two partition plates 7 and 9 on the side surfaces are connected with the bottom 1 of the sedimentation reaction tank to support the reaction tank, and the lower parts of the two partition plates respectively span the upper parts of the two semi-conical sedimentation tanks 3 and 4.
Furthermore, the spaces of two adjacent settling tanks separated by two clapboards 7 and 9 on the side surface are communicated through the semi-conical sedimentation tanks 3 and 4 below the two adjacent settling tanks, and materials cannot pass through the upper parts of the clapboards but only pass through the lower parts of the clapboards.
Furthermore, two sides above a middle partition plate 8 are connected to the bottom of the sedimentation reaction tank 1 to support the reaction tank, the middle part is provided with an opening, and the lower part is connected above the boundary of the two semi-conical sedimentation tanks 3 and 4.
Further, the boundary between the two semi-conical settling tanks 3, 4 is located on one diameter of the bottom of the settling tank.
Furthermore, the adjacent spaces of the two settling tanks separated by the middle partition plate 8 are connected through the opening above the partition plate, and materials cannot pass through the lower part of the partition plate and only can pass through the opening above the partition plate.
Further, the partition plates 7, 8 and 9 are all parallel to the central axis of the tank body.
Further, precipitation reaction jar 1 is located 2 internal portions of jar one side of settling cask, and 1 diameter ratio of precipitation reaction jar is less than 2 diameters of settling cask, and the opposite side is the top and is precipitation reaction jar material export 11.
The above-described precipitation reaction apparatus is applied to the treatment of wastewater containing different pollutants as follows:
example 1
The method is used for the precipitation defluorination treatment of the fluorine-containing wastewater and comprises the following steps:
the waste water to be treated is pumped from a waste water input pipeline 22 through a water pump 23, the waste water input pipeline sucks the generated precipitated calcium fluoride and lime slurry needing to be added with a precipitator from a precipitation backflow pipe 20 and a precipitator input pipe 21 through a Venturi ejector 19, the calcium fluoride in the precipitation backflow pipe 20 before being sucked and the lime slurry in the precipitator input pipe 21 are mixed in a pipeline mixer 18, the waste water, the backflow calcium fluoride precipitate and the lime slurry are mixed through the Venturi ejector, the materials enter a precipitation reaction tank 1 from an inlet 10 at the lower part of the precipitation reaction tank 1 and are fully stirred and mixed, the fluorine ions in the waste water and the calcium hydroxide paste adsorbed on the surface of the original calcium fluoride crystal grains are removed through precipitation reaction, and the new calcium fluoride precipitate generated by the fluorine ions grows on the surface of the original calcium fluoride precipitate to form larger crystal grains. The reacted materials enter the space at one side of the settling tank through an outlet 11 at the upper part of the settling tank, then flow downwards into the lower part of a partition plate 7 at the side, enter the adjacent space through a semi-conical settling pond 4, flow upwards through an outlet at the upper part of a middle partition plate 8, flow downwards into a semi-conical settling pond 3 at the lower part of a partition plate 9 at the other side, enter the adjacent space, and flow upwards out of an outlet 25 of the settling tank. Because the solid phase calcium fluoride precipitation particles in the material are large and are easy to settle, in the process of repeatedly refluxing the material up and down, the solid phase calcium fluoride precipitation completely settles and enters the two semi-conical sedimentation tanks 3 and 4, and only the clear liquid after removing fluorine is left at the outlet 25 of the sedimentation tank and flows out.
In the embodiment, an ORP and pH sensing electrode can be additionally arranged in the precipitation reaction tank, and the adding amount of the lime slurry is controlled by the ORP and pH controller, so that a better reaction effect is obtained.
Example 2
The method is used for the precipitation nickel removal treatment of nickel-containing wastewater and comprises the following steps:
the waste water to be treated is pumped in from a waste water input pipeline 22 through a water pump 23, the waste water input pipeline sucks the generated precipitated nickel hydroxide and the caustic soda solution to be added with the precipitator from a precipitation reflux pipe 20 and a precipitator input pipe 21 through a Venturi ejector 19, the nickel hydroxide in the precipitation reflux pipe 20 before being sucked and the caustic soda solution in the precipitator input pipe 21 are mixed in a pipeline mixer 18, the waste water and the reflux nickel hydroxide are precipitated, the mixed material of caustic soda solution through the venturi ejector enters the precipitation reaction tank 1 from the inlet 10 at the lower part of the precipitation reaction tank 1 and is fully stirred and mixed, nickel ions in the wastewater and sodium hydroxide adsorbed on the surface of the original nickel hydroxide crystal grains are subjected to precipitation reaction and removed, and new nickel hydroxide precipitate generated by the nickel ions grows on the surface of the original nickel hydroxide precipitate to form larger crystal grains. The reacted materials enter the space at one side of the settling tank through an outlet 11 at the upper part of the settling tank, then flow downwards into the lower part of a partition plate 7 at the side, enter the adjacent space through a semi-conical settling pond 4, flow upwards through an outlet at the upper part of a middle partition plate 8, flow downwards into a semi-conical settling pond 3 at the lower part of a partition plate 9 at the other side, enter the adjacent space, and flow upwards out of an outlet 25 of the settling tank. Because the solid-phase nickel hydroxide precipitate particles in the material are large and are easy to settle, in the process of repeatedly refluxing the material up and down, the solid-phase nickel hydroxide precipitate is completely settled and enters the two semi-conical sedimentation tanks 3 and 4, and only clear liquid after nickel removal flows out from the outlet 25 of the sedimentation tank.
The embodiment can also install pH sensing electrode in the precipitation reaction tank, and the pH controller controls the adding amount of caustic soda solution to obtain better reaction effect.
Example 3
The method is used for the precipitation dezincification treatment of the zinc-containing wastewater, and the process comprises the following steps:
the waste water to be treated is pumped in from a waste water input pipeline 22 through a water pump 23, the waste water input pipeline sucks the generated precipitated zinc hydroxide and the caustic soda solution to be added with the precipitator from a precipitation reflux pipe 20 and a precipitator input pipe 21 through a Venturi ejector 19, the zinc hydroxide in the precipitation reflux pipe 20 before being sucked and the caustic soda solution in the precipitator input pipe 21 are mixed in a pipeline mixer 18, the waste water and the reflux zinc hydroxide are precipitated, the mixed material of caustic soda solution through the venturi ejector enters the precipitation reaction tank 1 from the inlet 10 at the lower part of the precipitation reaction tank 1 and is fully stirred and mixed, the zinc ions in the wastewater and the sodium zincate adsorbed on the surface of the original zinc hydroxide crystal grains are subjected to precipitation reaction and removed, and the new zinc hydroxide precipitate generated by the zinc ions grows on the surface of the original zinc hydroxide precipitate to form larger crystal grains. The reacted materials enter the space at one side of the settling tank through an outlet 11 at the upper part of the settling tank, then flow downwards into the lower part of a partition plate 7 at the side, enter the adjacent space through a semi-conical settling pond 4, flow upwards through an outlet at the upper part of a middle partition plate 8, flow downwards into a semi-conical settling pond 3 at the lower part of a partition plate 9 at the other side, enter the adjacent space, and flow upwards out of an outlet 25 of the settling tank. Because the solid-phase zinc hydroxide precipitate particles in the material are large and are easy to settle, in the process of repeatedly refluxing the material up and down, the solid-phase zinc hydroxide precipitate is completely settled and enters the two semi-conical sedimentation tanks 3 and 4, and only clear liquid after zinc removal flows out from the outlet 25 of the sedimentation tank.
The embodiment can also install pH sensing electrode in the precipitation reaction tank, and the pH controller controls the adding amount of caustic soda solution to obtain better reaction effect.
The above-described embodiments only represent the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention, and therefore the present invention is not limited to the specific examples. The technical solution and idea of the present invention can be used to make several modifications and improvements, which all belong to the protection scope of the present invention. Therefore, other embodiments according to the scope of the claims should fall within the scope of the present invention.
Claims (10)
1. A precipitation reaction device for wastewater treatment is characterized in that: comprises a precipitation reaction tank (1), a stirrer positioned in the precipitation reaction tank, a settling tank (2), two clapboards (7) and (9) positioned on the inner side surface of the settling tank, a clapboard (8) in the middle, semi-conical sedimentation tanks (3) and (4), a sedimentation return pipe (20), a sedimentation discharge pipe (30), a pipeline mixer (18), a precipitant input pipe (21), an ejector (19) and a waste water input pipe (22); the sedimentation reaction tank (1) is fixed on the upper part of the device, the top of the sedimentation reaction tank is fixed with a stirrer, a stirring shaft (5) of the stirrer extends downwards along the central axis of the tank body of the sedimentation reaction tank (1) in the tank body and extends into the tank body, the sedimentation reaction tank (1) is supported above two clapboards (7) and (9) positioned on the inner side of the sedimentation tank and a middle clapboard (8), the two clapboards (7) and (9) positioned on the inner side of the sedimentation tank and the middle clapboard (8) separate the space of the inner cavity of the sedimentation tank (2) into four parts, the lower part of the sedimentation tank (2) is connected with two semi-conical sedimentation tanks (3) and (4), the lower parts of the two semi-conical sedimentation tanks (3) and (4) are respectively provided with a sedimentation outlet which is connected with a sedimentation return pipe (20) and a sedimentation drain pipe (30), the sedimentation return pipe (20) is connected with a precipitant input pipe (21) through, pipeline mixer (18) mix behind the sediment of backward flow and the precipitant links to each other with waste water input tube (22) through ejector (19), the ejector link to each other with the below material import (10) of precipitation reaction jar through the pipeline of top, there is material export (11) in the top of precipitation reaction jar, material export (11) of precipitation reaction jar top link to each other with the space of settling cask (2) one side, there is export (25) of handling back waste water clear liquid space top of the space of the opposite side of settling cask, and whole device supports on the base through several device stabilizer blade (27) of installing in settling cask barrel and two half cone sedimentation tank junctions.
2. The precipitation reaction device for wastewater treatment according to claim 1, wherein the precipitation return pipe (20), the pipeline mixer (18) and the precipitant input pipe (21) mix the precipitant with a part of the generated precipitate before entering the wastewater to be treated for precipitation reaction.
3. The precipitation reaction device for wastewater treatment according to claim 1, characterized in that the agitator is fixed to the top of the precipitation reaction tank (1) by an agitator bracket (6).
4. The precipitation reaction device for wastewater treatment according to claim 1, wherein the stirring blades (31) inclined upward in the stirring direction of the stirrer push the reaction materials to rotate downward and in the circumferential direction simultaneously when stirring.
5. The sedimentation reactor apparatus for wastewater treatment according to claim 1, wherein the two partition plates (7), (9) located on the inner side of the sedimentation tank are connected above to the bottom of the sedimentation tank (1) to support the sedimentation tank, and the lower parts thereof respectively span over the two semi-conical sedimentation tanks (3), (4).
6. The sedimentation reactor apparatus for wastewater treatment according to claim 1, wherein the two adjacent spaces of the settling tank separated by two partition plates (7), (9) located at the inner side of the settling tank are communicated with each other through the semi-conical sedimentation tanks (3), (4) located therebelow, and the material cannot pass through the upper part of the partition plates but only passes through the lower part of the partition plates.
7. The precipitation reaction unit for wastewater treatment according to claim 1, wherein the partition plate (8) located in the middle of the settling tank is connected to the bottom of the settling tank 1 at both sides above the partition plate to support the settling tank, and has an opening in the middle and a lower portion connected to the upper portion of the boundary between the two semi-conical settling tanks (3), (4).
8. A precipitation reaction unit for wastewater treatment according to claim 1, characterized in that the boundary between said two semi-conical settling tanks (3), (4) is located on a diameter at the bottom of the settling tank.
9. The precipitation reactor for wastewater treatment according to claim 1, wherein the adjacent spaces of the two settling tanks separated by the partition plate (8) located in the middle of the settling tanks are connected by the opening above the partition plate, and the material cannot pass through the lower part of the partition plate but only passes through the opening above the partition plate.
10. A precipitation reaction unit for wastewater treatment according to claim 1, characterized in that the two baffles (7), (9) located on the inner side of the settling tank and the middle baffle (8) are parallel to the central axis of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020450572.0U CN212504165U (en) | 2020-03-31 | 2020-03-31 | Precipitation reaction device for wastewater treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020450572.0U CN212504165U (en) | 2020-03-31 | 2020-03-31 | Precipitation reaction device for wastewater treatment |
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| Publication Number | Publication Date |
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| CN212504165U true CN212504165U (en) | 2021-02-09 |
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| CN202020450572.0U Expired - Fee Related CN212504165U (en) | 2020-03-31 | 2020-03-31 | Precipitation reaction device for wastewater treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117263348A (en) * | 2023-11-21 | 2023-12-22 | 河北地质大学 | Copper-containing heavy metal wastewater treatment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117263348A (en) * | 2023-11-21 | 2023-12-22 | 河北地质大学 | Copper-containing heavy metal wastewater treatment device |
| CN117263348B (en) * | 2023-11-21 | 2024-02-06 | 河北地质大学 | Copper-containing heavy metal wastewater treatment device |
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Addressee: Xie Wanzhen Document name: Notice of Termination of Patent Rights |
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Granted publication date: 20210209 |