CN219991349U - Novel papermaking wastewater treatment system - Google Patents
Novel papermaking wastewater treatment system Download PDFInfo
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- CN219991349U CN219991349U CN202320876030.3U CN202320876030U CN219991349U CN 219991349 U CN219991349 U CN 219991349U CN 202320876030 U CN202320876030 U CN 202320876030U CN 219991349 U CN219991349 U CN 219991349U
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 28
- 238000004062 sedimentation Methods 0.000 claims abstract description 82
- 239000010802 sludge Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000011282 treatment Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000010865 sewage Substances 0.000 claims abstract description 14
- 238000005273 aeration Methods 0.000 claims abstract description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 6
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 6
- 230000001112 coagulating effect Effects 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000002351 wastewater Substances 0.000 abstract description 25
- 238000004064 recycling Methods 0.000 abstract description 5
- 230000015271 coagulation Effects 0.000 abstract 2
- 238000005345 coagulation Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 13
- 244000005700 microbiome Species 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241001365789 Oenanthe crocata Species 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model relates to the field of sewage treatment, in particular to a novel papermaking wastewater treatment system. The system comprises a coarse grid, a fine grid, a primary sedimentation tank, an adjusting tank, a biological tank, a secondary sedimentation tank, a Fenton treatment system, a contact tank, and a sludge concentration tank and a sludge dewatering device which are communicated with each other in sequence, wherein the biological tank is an AAO tank, the biological tank comprises an anaerobic tank, an anoxic tank and an aerobic tank, aeration devices are arranged in the anoxic tank and the aerobic tank, the aeration devices are connected with a fan, the Fenton treatment system consists of a advection Fenton reaction tank, a cyclone coagulation tank and a vertical flow sedimentation tank, the sludge dewatering device is a plate-and-frame filter press, and the coagulation sedimentation tank is also communicated with a polyacrylamide and polyaluminium chloride feeding device. The utility model relates to a system for efficiently treating easily biodegradable organic matters, difficultly biodegradable organic matters, suspended matters and chromaticity in papermaking wastewater, and simultaneously ensuring that the water quality stably reaches the discharge standard or the subsequent reclaimed water recycling standard.
Description
Technical Field
The utility model relates to a novel papermaking wastewater treatment system, and belongs to the technical field of wastewater treatment.
Background
The serious pollution of the wastewater generated by the pulping and papermaking process in the papermaking industry to the ecological environment is an important problem facing China for a long time, and although the papermaking wastewater is recycled, treated and reused in the production process, a large amount of wastewater is discharged into a water body to cause serious pollution of the water environment; meanwhile, the current mainstream papermaking wastewater treatment technology has the problems of inflexible condition adjustment, low wastewater recycling degree and the like, and cannot scientifically and efficiently treat papermaking wastewater to create favorable conditions for recycling treatment water.
Therefore, under the requirements of increasingly strict environmental protection supervision and clean production, most papermaking wastewater treatment plants only depend on the original technology, and the recycling standard of the first grade A and even higher is difficult to meet, and the realization of higher emission standard is a inequality by adding a large amount of medicaments. However, the cost of adding a large amount of medicament is high, and the method is neither environment-friendly nor energy-saving nor sustainable. Therefore, how to treat papermaking wastewater containing a large amount of lignin, hemicellulose, saccharides and other dissolved matters (residual alkali, inorganic salt, volatile acid, ammonia nitrogen and the like) scientifically and economically to keep a process treatment system to treat the easily biodegradable organic matters, the difficultly biodegradable organic matters, suspended matters and chromaticity in the papermaking wastewater efficiently, and simultaneously ensure that the water quality is stable to reach the discharge standard or the subsequent reclaimed water recycling standard is a difficult problem in the current industry, and is a key force point for improving quality and enhancing efficiency of the current papermaking wastewater treatment plant.
Disclosure of Invention
Aiming at the problems, the utility model provides a novel scientific and economic papermaking wastewater treatment system which can efficiently remove various pollutants and ensure that the quality of effluent is stable and reaches the standard.
The utility model adopts the following technical scheme:
the novel papermaking wastewater treatment system comprises a coarse grille, a fine grille, a primary sedimentation tank, a regulating tank, a biological tank, a secondary sedimentation tank, a Fenton treatment system, a contact tank, a sludge concentration tank and a sludge dewatering device, wherein the Fenton treatment system consists of a Fenton reaction tank and a coagulating sedimentation tank; the sewage treatment device comprises a coarse grid, a fine grid, a primary sedimentation tank, an adjusting tank, a biological tank, a secondary sedimentation tank, a Fenton reaction tank, a coagulating sedimentation tank and a contact tank, wherein the coarse grid, the fine grid, the primary sedimentation tank, the adjusting tank, the biological tank, the secondary sedimentation tank, the Fenton reaction tank, the coagulating sedimentation tank and the contact tank are sequentially communicated in the direction from water inlet to water outlet, the sludge concentration tank is communicated with a sludge dewatering device, the primary sedimentation tank, the secondary sedimentation tank and the coagulating sedimentation tank are respectively communicated with the sludge concentration tank through sludge pipes, and the sludge concentration tank and the sludge dewatering device are respectively communicated with the primary sedimentation tank through sewage pipes through water collecting wells.
The biological pond is an AAO pond and comprises an anaerobic pond, an anoxic pond and an aerobic pond, and aeration devices are arranged in the anoxic pond and the aerobic pond and are connected with a fan.
Further, the secondary sedimentation tank is communicated with the anaerobic tank through a sludge backflow pipeline to form sludge external backflow.
Further, the aerobic tank is communicated with the anoxic tank through a sewage backflow pipeline to form sludge internal backflow.
The Fenton reaction tank is a horizontal flow Fenton reaction tank, and is designed according to 2 grids in parallel, and the coagulating sedimentation tank consists of a cyclone coagulating tank and a vertical flow sedimentation tank.
The sludge dewatering device is a plate-and-frame filter press.
The coagulating sedimentation tank is also communicated with a polyacrylamide and polyaluminium chloride feeding device.
The primary sedimentation tank is a horizontal sedimentation tank.
The regulating tank is a baffling regulating tank.
The secondary sedimentation tank is a vertical flow secondary sedimentation tank.
The beneficial effects of the utility model are as follows:
1. this novel papermaking wastewater treatment system combines the active sludge reaction rate change of the different dominant bacteria in each functional area according to the organic pollutant concentration of intaking, scientific and accurate regulation and control technology. Under the premise of scientific analysis and evaluation, design or reconstruction of pretreatment section water running mode, drop water reoxygenation or other low-efficiency aeration oxygenation is avoided, the process is flexibly adjusted, and various pollutants are removed economically, efficiently and stably under high water inlet organic concentration.
2. The novel papermaking wastewater treatment system has scientific method principle, simple operation and convenient operation management, is completely suitable for large, medium and small papermaking wastewater treatment plants with higher concentration of organic pollutants in water, and provides a method with pertinency and operability in practice for the first time aiming at the common difficult problem in the industry.
3. This novel papermaking effluent disposal system handles water if increase advanced treatment unit, can reach reuse water standard, use the normal water in a large number in the production process, but greatly reduced manufacturing cost accords with green's development theory.
4. The method can be used for carrying out process optimization upgrading on the existing papermaking wastewater treatment plant with the problems of complex pollutant components, high organic matter concentration and the like through simple process flow reformation and partial facilities addition, and can also be directly used in the process design of a newly-built papermaking wastewater treatment plant with high influent organic pollutant concentration.
Drawings
FIG. 1 is a schematic diagram of a process flow of a novel papermaking wastewater treatment system of the present utility model.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
The utility model will now be further described with reference to fig. 1 and the detailed description.
Referring to fig. 1, a novel papermaking wastewater treatment system comprises a coarse grille, a fine grille, a primary sedimentation tank, an adjusting tank, a biological tank, a secondary sedimentation tank, a Fenton treatment system, a contact tank, a sludge concentration tank and a sludge dewatering device; the Fenton treatment system consists of a Fenton reaction tank and a coagulating sedimentation tank, wherein the Fenton reaction tank is a advection Fenton reaction tank, and the coagulating sedimentation tank consists of a rotational flow type coagulating tank and a vertical flow type sedimentation tank according to a parallel design of 2 (grids); the biological pond is an AAO pond and comprises an anaerobic pond, an anoxic pond and an aerobic pond, and aeration devices are arranged in the anoxic pond and the aerobic pond and are connected with a fan; the sludge dewatering device is a plate-and-frame filter press.
The sewage treatment device comprises a coarse grid, a fine grid, a primary sedimentation tank, an adjusting tank, a biological tank, a secondary sedimentation tank, a Fenton reaction tank, a coagulating sedimentation tank and a contact tank, wherein the coarse grid, the fine grid, the primary sedimentation tank, the adjusting tank, the biological tank, the secondary sedimentation tank, the Fenton reaction tank, the coagulating sedimentation tank and the contact tank are sequentially communicated from water inlet to water outlet, the sludge concentration tank is communicated with a sludge dewatering device, the primary sedimentation tank, the secondary sedimentation tank and the coagulating sedimentation tank are respectively communicated with the primary sedimentation tank through sewage pipes through water collecting wells, the secondary sedimentation tank is communicated with an anaerobic tank through a sludge backflow pipeline, the formed sludge is totally and externally refluxed, and the aerobic tank is communicated with an anoxic tank through a sludge backflow pipeline.
The coagulating sedimentation tank is also connected with a polyacrylamide and polyaluminium chloride feeding device, the polyaluminium chloride is a coagulant, and the polyacrylamide is a coagulant aid.
The primary sedimentation tank can be a horizontal sedimentation tank; the regulating tank can adopt a baffling regulating tank; the secondary sedimentation tank can adopt a vertical flow secondary sedimentation tank; the water outlet ends of the coarse grille, the fine grille and the primary sedimentation tank are all in overflow type water outlet mode, so that the phenomenon of drop is avoided, and when the phenomenon of drop cannot be avoided, a flexible drop guide plate can be arranged at the drop position or the upper part of the drop position is capped and sealed.
When the novel papermaking wastewater treatment system provided by the embodiment is operated, the papermaking wastewater flows to the coarse grille and the fine grille after being converged, and larger suspended particles such as paper scraps, waste residues and the like can be filtered and removed. The filtered wastewater enters a primary sedimentation tank, and COD and BOD are firstly treated 5 The SS, etc. are subjected to a primary treatment to reduce the load and thereby improve the operating conditions of the subsequent biological treatment structure. And then the wastewater enters an adjusting tank, the water quantity and the pH value of the wastewater are adjusted, and the water quantity fluctuation and the influence of the wastewater on the subsequent treatment are prevented. And then the wastewater enters an anaerobic tank, anaerobic microorganisms are contained in the anaerobic tank, a submerged stirrer is arranged in the anaerobic tank, the wastewater and the phosphorus-containing sludge flowing back from the secondary sedimentation tank are fully mixed through the submerged stirrer, and phosphorus in the sludge is released into the wastewater in the stirring process, so that the requirement of the microorganisms on phosphorus elements is met. Anaerobic microorganisms utilize biochemically degradable pollutants in the wastewater to decompose macromolecular organic matters in the wastewater into micromolecular organic matters, and directly decompose the micromolecular organic matters into carbon dioxide and water to perform vital activities, so that the biochemical oxygen demand of the wastewater is reduced, and under the action of certain microorganisms, a small part of nitrate nitrogen is reduced into nitrogen, and a part of organic nitrogen is converted into ammonia nitrogen. Then the sewage flows to an anoxic tank, the anaerobic tank, the anoxic tank, the aerobic tank and the secondary sedimentation tank are communicated, the effluent of the anaerobic tank is mixed with the wastewater containing a large amount of nitrate nitrogen which is returned from the aerobic tank by a return pump, and enters the anoxic tank to form an anoxic environment containing a small amount of dissolved oxygen, the small amount of dissolved oxygen can accelerate the proliferation of nitrate reducing bacteria and nitrite reducing bacteria, and the anoxic environment ensures that the nitrate nitrogen is utilized by the nitrate reducing bacteria and nitrite reducing bacteriaReducing to nitrogen. The wastewater continues to flow into an aerobic tank, in the aerobic tank, the concentration of organic matters is greatly reduced under the vital activity of microorganisms, the concentration of nitrate nitrogen is increased due to nitrification, and the concentration of phosphorus is also rapidly reduced under the accumulation of phosphorus-accumulating bacteria. BOD in sewage is treated by biological pool AAO process 5 The ammonia nitrogen and the like are effectively removed, but the sewage is subjected to solid-liquid separation in a vertical flow type secondary sedimentation tank, the solid sludge is settled at the bottom of the secondary sedimentation tank, and the sewage on the upper part flows to a Fenton treatment system. Part of the sludge containing phosphorus flows back to the anaerobic tank under the action of the pump. The effluent of the secondary sedimentation tank enters a Fenton reaction tank, concentrated sulfuric acid or dilute sulfuric acid is added according to the oxidation reaction requirement to adjust the pH value of the wastewater, then a catalyst and hydrogen peroxide are added to perform oxidation reaction, a large amount of reducing substances in the wastewater are removed, and then the pH value is adjusted to be neutral. And (3) selecting the coagulating sedimentation tank as a solid-liquid separation system of the Fenton reactor, fully mixing the wastewater in the cyclone coagulating tank with polyaluminium chloride and polyacrylamide coagulant aid, and then entering a vertical flow sedimentation tank. The effluent of the vertical flow sedimentation tank enters the contact tank for disinfection and can be discharged or recycled after advanced treatment. And lifting the sludge separated by the primary sedimentation tank, the secondary sedimentation tank and the coagulating sedimentation tank into a sludge concentration tank under the action of a sludge pump, and carrying out outward treatment after the concentrated sludge is dehydrated into sludge cakes by a plate-and-frame filter press. The sewage generated in the process can be collected back to the primary sedimentation tank through the water collecting well.
The sludge concentration of the biological pond is regulated between 2.0 and 4.5 g/L; specifically, the total external reflux ratio of the sludge from the secondary sedimentation tank to the anaerobic tank is adjusted between 40% and 100%, and the internal reflux ratio of the sludge from the aerobic tank to the anoxic tank is adjusted between 100% and 400%.
The water inlet ends of the regulating tank, the anaerobic tank and the anoxic tank are respectively provided with the regulating valve and the flowmeter, so that the flow can be regulated at any time according to actual conditions.
The anoxic tank and the aerobic tank are both provided with aeration devices, the nitrate reducing bacteria and the nitrite reducing bacteria are facultative anaerobic microorganisms, the two microorganisms can be greatly propagated under aerobic conditions, and denitrification can be carried out on the two microorganisms under anoxic conditions to remove nitrate nitrogen in wastewater. The aeration device is arranged in the anoxic tank, so that aeration can be performed under the condition that the microbial biomass in the anoxic tank is reduced, and required microorganisms can be rapidly supplemented.
The water inlet residence time of the anaerobic tank, the anoxic tank and the aerobic tank is respectively 1.0h to 3.0h, 2.0h to 4.0h and 5.0h to 12.0h.
The pH value of the advection Fenton reaction tank is controlled to be 3.0-4.0, and the hydraulic retention time is 3-5 h.
The contact tank adopts sodium hypochlorite to disinfect the effluent, and the disinfection contact time is 30min.
The foregoing is only a preferred embodiment of the utility model, but it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. The novel papermaking wastewater treatment system comprises a coarse grille, a fine grille, a primary sedimentation tank, a regulating tank, a biological tank, a secondary sedimentation tank, a Fenton treatment system, a contact tank, a sludge concentration tank and a sludge dewatering device, and is characterized in that the Fenton treatment system consists of a Fenton reaction tank and a coagulating sedimentation tank; the sewage treatment device comprises a coarse grid, a fine grid, a primary sedimentation tank, an adjusting tank, a biological tank, a secondary sedimentation tank, a Fenton reaction tank, a coagulating sedimentation tank and a contact tank, wherein the coarse grid, the fine grid, the primary sedimentation tank, the adjusting tank, the biological tank, the secondary sedimentation tank, the Fenton reaction tank, the coagulating sedimentation tank and the contact tank are sequentially communicated in the direction from water inlet to water outlet, the sludge concentration tank is communicated with a sludge dewatering device, the primary sedimentation tank, the secondary sedimentation tank and the coagulating sedimentation tank are respectively communicated with the sludge concentration tank through sludge pipes, and the sludge concentration tank and the sludge dewatering device are respectively communicated with the primary sedimentation tank through sewage pipes through water collecting wells.
2. The novel papermaking wastewater treatment system according to claim 1, wherein the biological pond is an AAO pond and comprises an anaerobic pond, an anoxic pond and an aerobic pond, and aeration devices are arranged in the anoxic pond and the aerobic pond and are connected with a fan.
3. The novel papermaking wastewater treatment system according to claim 2, wherein the secondary sedimentation tank is communicated with the anaerobic tank through a sludge return pipeline to form sludge external return.
4. The novel papermaking wastewater treatment system according to claim 2, wherein the aerobic tank and the anoxic tank are communicated through a sewage backflow pipeline to form an internal sludge backflow.
5. The novel papermaking wastewater treatment system according to claim 1, wherein the Fenton reaction tank is a horizontal flow Fenton reaction tank, and is designed in parallel according to 2 grids, and the coagulating sedimentation tank consists of a cyclone coagulating tank and a vertical flow sedimentation tank.
6. The novel papermaking wastewater treatment system according to claim 1, wherein the sludge dewatering device is a plate-and-frame filter press.
7. The novel papermaking wastewater treatment system according to claim 1, wherein the coagulating sedimentation tank is also connected with a polyacrylamide and polyaluminum chloride feeding device.
8. The novel papermaking wastewater treatment system according to claim 1, wherein the primary sedimentation tank is a advection sedimentation tank.
9. The novel papermaking wastewater treatment system according to claim 1, wherein the regulating tank is a baffled regulating tank.
10. The novel papermaking wastewater treatment system according to claim 1, wherein the secondary sedimentation tank is a vertical flow secondary sedimentation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320876030.3U CN219991349U (en) | 2023-04-19 | 2023-04-19 | Novel papermaking wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320876030.3U CN219991349U (en) | 2023-04-19 | 2023-04-19 | Novel papermaking wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219991349U true CN219991349U (en) | 2023-11-10 |
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ID=88604689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320876030.3U Active CN219991349U (en) | 2023-04-19 | 2023-04-19 | Novel papermaking wastewater treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219991349U (en) |
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