CN209853859U - Alumina production wastewater treatment system - Google Patents
Alumina production wastewater treatment system Download PDFInfo
- Publication number
- CN209853859U CN209853859U CN201920473149.XU CN201920473149U CN209853859U CN 209853859 U CN209853859 U CN 209853859U CN 201920473149 U CN201920473149 U CN 201920473149U CN 209853859 U CN209853859 U CN 209853859U
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- China
- Prior art keywords
- oil
- tank
- wastewater treatment
- water
- treatment system
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- Expired - Fee Related
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000004062 sedimentation Methods 0.000 claims abstract description 32
- 239000002351 wastewater Substances 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 27
- 239000010802 sludge Substances 0.000 claims abstract description 22
- 239000003463 adsorbent Substances 0.000 claims abstract description 6
- 230000008719 thickening Effects 0.000 claims abstract 2
- 238000003860 storage Methods 0.000 claims description 26
- 238000004140 cleaning Methods 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 9
- 239000004744 fabric Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 58
- 239000003513 alkali Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Filtration Of Liquid (AREA)
Abstract
The utility model discloses an alumina production wastewater treatment system belongs to the wastewater treatment system field, and it includes wastewater treatment module and sludge thickening module, wastewater treatment module includes sedimentation tank and clean water basin, wastewater treatment module still includes oil separation preliminary sedimentation tank, be equipped with the oil strain grid in the oil separation preliminary sedimentation tank, the laminating of oil strain grid bottom is provided with the screen cloth, be formed with a plurality of oil strain units in the oil strain grid, it has the adsorbent all to fill in every oil strain unit, and waste water passes through in proper order oil separation preliminary sedimentation tank, sedimentation tank and clean water basin. The utility model discloses waste oil in the waste water of production can be carried out the preliminary treatment to have to can improve the effect of waste water treatment back quality of water.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment systems, in particular to an alumina production wastewater treatment system.
Background
In the alumina industry, a large amount of alkali needs to be added in the production process, and water is used as a carrier in the alumina production process and enters the production flow. The waste water in the alumina industry is mainly alkali-containing waste water, and because the components of the waste water are complex, and the change range of the pH value and the content of suspended matters is large, if the waste water is not properly treated, a large amount of industrial waste water is generated to pollute the surrounding environment, a large amount of alkali, alumina and water are lost, and the cost is increased finally.
Alumina production wastewater treatment system among the prior art, as the description attached figure 5 shows, production wastewater is in lifting pump station pump income to sedimentation tank 12, adds the flocculating agent in sedimentation tank 12, carries out preliminary sedimentation, and suspended particles in aquatic relies on gravity to sink in the bottom of the pool, forms mud, and the clear water of pond upper strata then discharges into clear water tank 13 in, and mud then lets in to sludge concentration module 2 through the sludge pump room and compresses, dewaters, finally landfill.
In the production process of alumina, a lot of mechanical equipment is needed, such as a hydraulic coupler of a large-scale water pump, an oil cooler of a motor, a stirring device, a roasting system and the like, and lubricating oil leakage is possible, so that the waste water often contains oil. If not got rid of in advance, waste oil gets into and can influence the quality of water of final play water behind the system, and also appears scaling easily in the pipeline of intercommunication each pond.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an alumina production wastewater treatment system has and to carry out the preliminary treatment to the waste oil in the production wastewater for quality of water is difficult for receiving the influence, and the effect of scaling also is difficult for appearing in the drainage pipe.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides an alumina production wastewater treatment system, includes waste water treatment module and sludge concentration module, waste water treatment module includes sedimentation tank and clean water basin, waste water treatment module still includes oil removal preliminary sedimentation tank, be equipped with the oil strain grid in the oil removal preliminary sedimentation tank, the laminating of oil strain grid bottom is provided with the screen cloth, be formed with a plurality of oil strain units in the oil strain grid, all pack in every oil strain unit has the adsorbent, and waste water passes through in proper order oil removal preliminary sedimentation tank, sedimentation tank and clean water basin.
Through adopting above-mentioned technical scheme, the adsorbent can carry out physical adsorption to waste oil, has reduced the waste oil that contains in the former production waste water, and the screen cloth also can block great impurity in the waste water to can improve the quality of water that gets into in the clear water pond through the preliminary treatment before making waste water get into the sedimentation tank, also be difficult for containing too much waste oil and long-pending dirt because of the aquatic in the pipeline of transport.
The utility model discloses further set up to: the inside wall of oil removal preliminary sedimentation tank is provided with the support flange along its circumference, the oil strain grid is set up on the support flange.
Through adopting above-mentioned technical scheme, can be easy to assemble with dismantle oil filter grid.
The utility model discloses further set up to: and a filter screen is arranged above the oil filtering grid in the oil separation pre-settling tank.
Through adopting above-mentioned technical scheme, the filter screen can further get rid of less granule suspended solid in the waste water.
The utility model discloses further set up to: the oil separation pre-settling tank is integrally formed with a first water storage tank and a second water storage tank along the side edges of the oil separation pre-settling tank in the length direction, opposite side walls in the first water storage tank are rotatably connected with first rotating rollers, and opposite side walls in the second water storage tank are rotatably connected with second rotating rollers;
the filter screen passes the relative lateral wall of oil removal preliminary sedimentation tank, the filter screen is located the transmission between first live-rollers and the second live-rollers through the driving piece, the bottom of the pool intercommunication of first tank and second tank has the drain pipe.
Through adopting above-mentioned technical scheme, when being located the filter screen in oil removal preliminary sedimentation pond and reaching the absorption limit, utilize first live-rollers and second live-rollers to spread into again unused filter screen to the oil removal preliminary sedimentation in the pond and adsorb the filtration, made things convenient for the dismantlement and the periodic replacement of filter screen.
The utility model discloses further set up to: the cleaning pipe is erected above the filter screen in the first water storage tank and the second water storage tank, and the bottom of the cleaning pipe is provided with a jet hole.
Through adopting above-mentioned technical scheme, can let in high pressure water in the cleaning tube, utilize high pressure water to carry out the spray rinsing to the filter screen that gets into in the oil removal preliminary sedimentation pond to make the filter screen that adsorbs there is debris still repeatedly usable.
The utility model discloses further set up to: the aperture of the injection hole is gradually reduced along the direction towards the inside of the cleaning pipe.
Through adopting above-mentioned technical scheme, can further increase the injection pressure after the high pressure water is spout from the jet orifice to improve the cleaning performance on filter screen surface.
The utility model discloses further set up to: the drain pipe is communicated with the sludge concentration module.
Through adopting above-mentioned technical scheme, can handle the secondary treatment waste water in first tank and the second tank, prevent that it pollutes the environment once more.
The utility model discloses further set up to: the inside of the clean water tank is communicated with a water delivery pipe, and one end of the water delivery pipe is communicated with the cleaning pipe through a water pump.
By adopting the technical scheme, the clear water obtained after being treated by the wastewater treatment module can be reused, and resources are saved.
To sum up, the utility model discloses following beneficial effect has:
1. by arranging the oil separation pre-settling tank, waste oil contained in the wastewater can be pre-treated, and the water quality after wastewater treatment is improved;
2. through the setting of reciprocating motion's filter screen and scavenge pipe, can in time improve the interior waste water filtering capacity of oil removal preliminary sedimentation pond, further improved the quality of water of discharging into in the clear water pond.
Drawings
FIG. 1 is a flow diagram of the present invention for embodying a wastewater treatment system;
fig. 2 is a schematic view of an installation structure for embodying an oil filter assembly in the present invention;
fig. 3 is a schematic structural diagram for embodying the filter screen in the present invention;
FIG. 4 is a schematic view of the structure for embodying the injection hole of the present invention;
FIG. 5 is a process flow diagram of a prior art system for implementing the alumina production wastewater treatment system.
In the figure, 1, a wastewater treatment module; 11. an oil removal pre-settling tank; 111. a support flange; 12. a sedimentation tank; 13. a clean water tank; 2. a sludge concentration module; 3. an oil filter grid; 4. a filter screen; 5. a first water storage tank; 51. a first rotating roller; 52. a first drive motor; 6. a second water storage tank; 61. a second rotating roller; 62. a second drive motor; 7. a drain pipe; 8. cleaning the tube; 81. and ejecting the hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): as shown in figure 1, for the utility model discloses an alumina production wastewater treatment system, which comprises a wastewater treatment module 1 and a sludge concentration module 2. The wastewater treatment module 1 comprises an oil separation pre-settling tank 11, a settling tank 12 and a clean water tank 13, wherein the oil separation pre-settling tank 11 is used for sequentially introducing production wastewater pumped by a lifting pump station, and an oil filtering assembly is arranged in the oil separation pre-settling tank 11 so as to pretreat waste oil in the wastewater.
As shown in fig. 2, the oil filter assembly comprises an oil filter grate 3 and a screen (not shown in the figure) closing an opening at the bottom of the oil filter grate 3. A supporting flange 111 is arranged on the inner side wall of the oil separation pre-settling tank 11 along the circumferential direction of the inner side wall, and the oil filter grid 3 is erected on the supporting flange 111; a plurality of oil filtering units are formed in the oil filtering grille 3, and each oil filtering unit is filled with an adsorbent which can be bagged active carbon particles. In this embodiment, the number of oil filter assemblies may be set to two groups.
As shown in fig. 2 and 3, a first reservoir 5 and a second reservoir 6 are integrally formed on the side walls of the oil separation pre-settling tank 11 along the length direction thereof, respectively. The opposite side walls in the first water storage tank 5 are rotatably connected with first rotating rollers 51, and the outer side walls of the first water storage tank 5 are provided with first driving motors 52 for driving the first rotating rollers 51 to rotate; a second rotating roller 61 is rotatably connected to opposite sidewalls of the second water storage 6, and a second driving motor 62 for driving the second rotating roller 61 to rotate is installed on the outer sidewalls of the second water storage 6. The first rotating roller 51 is sleeved with a rolled filter screen 4, one end of the filter screen 4, which is far away from the first rotating roller 51, penetrates through the side wall of the oil separation pre-settling tank 11 and is wound on the second rotating roller 61, and the filter screen 4 is positioned above the oil filter grille 3.
As shown in fig. 1, a flocculating agent can be added into the sedimentation tank 12, wastewater is discharged into the clean water tank 13 after being treated by the oil separation pre-sedimentation tank 11 and the sedimentation tank 12, clean water in the clean water tank 13 can be recycled after being filtered by the high efficiency filter, part of suspended matters in the wastewater are precipitated to the bottoms of the oil separation pre-sedimentation tank 11 and the sedimentation tank 12 through self gravity to form sludge, the deposited sludge can be continuously or periodically discharged out of the tank, and the sludge enters the sludge concentration module 2 through the sludge pump room to be concentrated, so that the water content is reduced. The sludge discharge mode usually comprises bucket-type bottom sludge discharge or mechanical sludge discharge, the sludge dewatering usually comprises methods of natural drying, mechanical dewatering, drying and the like, and the dewatered sludge can be buried after being compressed.
As shown in fig. 3 and 4, the cleaning pipe 8 is erected above the filter screen 4 in the first water storage tank 5 and the second water storage tank 6, the bottom of the cleaning pipe 8 is provided with an injection hole 81, and the aperture of the injection hole 81 is gradually reduced along the direction towards the inside of the cleaning pipe 8. The water source in the cleaning pipe 8 can be provided by the clean water tank 13, specifically, a water pipe (not shown in the figure) can be connected in the clean water tank 13, the water pipe is pumped into the cleaning pipe 8 by a high-pressure water pump, the filter screen 4 is cleaned by high-pressure water, so that the filter screen 4 input into the oil separation pre-settling tank 11 is always in a clean state, and impurities on the filter screen 4 and treated wastewater can be discharged into the sludge concentration module 2 from the drain pipe 7. The inverted-conical design of the injection hole 81 can further increase the injection pressure after the high-pressure water is injected from the injection hole 81.
The implementation principle of the above embodiment is as follows: the production wastewater enters the oil separation pre-settling tank 11 after passing through the lifting pump station, and because the water consumption change in each period of time is large in the production process of the alumina, the lifting pump cannot keep stable operation if the wastewater flow is small, and the wastewater only needs to overflow if the wastewater flow is large. Therefore, the oil separation pre-settling tank 11 can control the time of the waste water staying in the tank, and the filter screen 4 and the adsorbent can be used for removing the waste oil.
When the filter screen 4 is used, the first driving motor 52 and the second driving motor 62 rotate forward synchronously, suspended matters of the wastewater can be continuously adsorbed by the unused filter screen 4 which is continuously conveyed, and a small part of wastewater can flow into the first water storage tank 5 and the second water storage tank 6 through the gap of the oil separation pre-settling tank 11 through the filter screen 4. After the output of the filter screen 4 in the first water storage tank 5 is completed, the first driving motor 52 and the second driving motor 62 are synchronously reversed, and the filter screen 4 in the second water storage tank 6 to be input into the oil separation pre-settling tank 11 again is sprayed and washed by the water discharge pipe 7. Clear water in the sedimentation tank 12 is discharged into a clear water tank 13, and waste water in the first water storage tank 5 and the second water storage tank 6 and sludge in the oil separation pre-sedimentation tank 11 and the sedimentation tank 12 are discharged into the sludge concentration module 2 for treatment.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides an aluminium oxide waste water processing system, includes waste water treatment module (1) and sludge thickening module (2), waste water treatment module (1) includes sedimentation tank (12) and clean water basin (13), its characterized in that: the wastewater treatment module (1) further comprises an oil separation pre-settling tank (11), an oil filtering grid (3) is arranged in the oil separation pre-settling tank (11), a screen is attached to the bottom of the oil filtering grid (3), a plurality of oil filtering units are formed in the oil filtering grid (3), an adsorbent is filled in each oil filtering unit, and production wastewater sequentially passes through the oil separation pre-settling tank (11), a settling tank (12) and a clean water tank (13).
2. The alumina production wastewater treatment system according to claim 1, wherein: the inside wall of oil removal preliminary sedimentation tank (11) is provided with support flange (111) along its circumference, oil filter grid (3) set up on support flange (111).
3. The alumina production wastewater treatment system according to claim 2, wherein: and a filter screen (4) is arranged above the oil filtering grille (3) in the oil separation pre-settling tank (11).
4. The alumina production wastewater treatment system according to claim 3, wherein: the oil separation pre-settling tank (11) is respectively and integrally formed with a first water storage tank (5) and a second water storage tank (6) along the side edges of the length direction of the oil separation pre-settling tank, opposite side walls in the first water storage tank (5) are rotatably connected with first rotating rollers (51), and opposite side walls in the second water storage tank (6) are rotatably connected with second rotating rollers (61);
the filter screen (4) pass the relative lateral wall of oil removal preliminary sedimentation tank (11), filter screen (4) are located the transmission between first live-rollers (51) and second live-rollers (61) through the driving piece, the bottom of a pool intercommunication of first tank (5) and second tank (6) has drain pipe (7).
5. The alumina production wastewater treatment system according to claim 4, wherein: the cleaning device is characterized in that cleaning pipes (8) are erected above the filter screen (4) in the first water storage tank (5) and the second water storage tank (6), and jet holes (81) are formed in the bottoms of the cleaning pipes (8).
6. The alumina production wastewater treatment system according to claim 5, wherein: the aperture of the injection hole (81) is gradually reduced along the direction towards the inside of the cleaning pipe (8).
7. The alumina production wastewater treatment system according to claim 4 or 5, wherein: the drain pipe (7) is communicated with the sludge concentration module (2).
8. The alumina production wastewater treatment system according to claim 7, wherein: the inside of the clean water tank (13) is communicated with a water pipe, and one end of the water pipe is communicated with the cleaning pipe (8) through a water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920473149.XU CN209853859U (en) | 2019-04-09 | 2019-04-09 | Alumina production wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920473149.XU CN209853859U (en) | 2019-04-09 | 2019-04-09 | Alumina production wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209853859U true CN209853859U (en) | 2019-12-27 |
Family
ID=68936718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920473149.XU Expired - Fee Related CN209853859U (en) | 2019-04-09 | 2019-04-09 | Alumina production wastewater treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209853859U (en) |
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2019
- 2019-04-09 CN CN201920473149.XU patent/CN209853859U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |