CN216639205U - Industrial sewage treatment system - Google Patents
Industrial sewage treatment system Download PDFInfo
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- CN216639205U CN216639205U CN202122971226.4U CN202122971226U CN216639205U CN 216639205 U CN216639205 U CN 216639205U CN 202122971226 U CN202122971226 U CN 202122971226U CN 216639205 U CN216639205 U CN 216639205U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model relates to the technical field of sewage treatment, and discloses an industrial sewage treatment system which comprises an adjusting tank, wherein the adjusting tank is sequentially connected with a primary sedimentation tank, an anaerobic tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank, the primary sedimentation tank and the secondary sedimentation tank are communicated with a sludge tank, the aerobic tank flows back to the anoxic tank to form an anoxic tank-aerobic tank backflow system, and the secondary sedimentation tank is further sequentially connected with an ozone contact tank, a biological activated carbon filter tank and a disinfection tank. The industrial sewage treatment system has the advantages of high sewage treatment load rate, high impact load resistance, no limitation on the quality of inlet water, stable quality of outlet water and reduced environmental pollution.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to an industrial sewage treatment system.
Background
The industrial wastewater comprises production wastewater and production sewage, and refers to wastewater and waste liquid generated in the industrial production process, wherein the wastewater and the waste liquid contain industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water. With the rapid development of industry, the variety and quantity of waste water are rapidly increased, the pollution to water bodies is more and more extensive and serious, and the health and the safety of human beings are threatened.
Therefore, the treatment of industrial waste water is important for environmental protection.
Disclosure of Invention
The utility model aims to provide an industrial sewage treatment system aiming at the defects of the technology, which has the advantages of high sewage treatment load rate, high impact load resistance, no limitation on the quality of inlet water, stable quality of outlet water and reduced environmental pollution.
In order to achieve the purpose, the industrial sewage treatment system comprises an adjusting tank, wherein the adjusting tank is sequentially connected with a primary sedimentation tank, an anaerobic tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank, the primary sedimentation tank and the secondary sedimentation tank are communicated with a sludge tank, the aerobic tank flows back to the anoxic tank to form an anoxic tank-aerobic tank backflow system, and the secondary sedimentation tank is further sequentially connected with an ozone contact tank, a biological activated carbon filter tank and a disinfection tank.
Preferably, sewage is introduced into the regulating reservoir, primary filtration is carried out through a coarse and fine grid in the regulating reservoir, large-particle impurities in the sewage are intercepted, the PH of the sewage is controlled to be 7, and the treated sewage is conveyed to the primary sedimentation reservoir.
Preferably, the primary sedimentation tank sediments small particle impurities, the treated sewage is introduced into the anaerobic tank, and the sludge is introduced into the sludge tank.
Preferably, the anaerobic tank releases phosphorus through phosphorus accumulating bacteria, absorbs easily degradable organic matters, and introduces the treated sewage into the anoxic tank.
Preferably, the anoxic tank converts nitrate brought by internal reflux into nitrogen to escape into the atmosphere through biological denitrification by denitrifying bacteria, so as to achieve the purpose of denitrification, and the treated sewage is introduced into the aerobic tank.
Preferably, the aerobic tank converts ammonia nitrogen in the sewage and ammonia nitrogen formed by ammoniation of organic nitrogen into nitrate through biological nitrification, phosphorus accumulating bacteria excessively absorb phosphorus, the phosphorus is removed through discharge of residual sludge, then the sewage flows back to the anoxic tank, the reflux ratio of the sludge is 100%, the reflux ratio of the mixed liquor is 100-200%, and the sewage is introduced into the secondary sedimentation tank after the reflux is finished.
Preferably, the secondary sedimentation tank is used for secondary sedimentation, so that water flow and sludge are separated, the sludge is introduced into the sludge tank, and the treated sewage is discharged to the ozone contact tank.
Preferably, the ozone contact tank oxidizes organic matters in water into carbon dioxide through ozone, the ammonia nitrogen is converted into nitre peptide ammonia nitrogen, the treated sewage is discharged to the biological activated carbon filter tank after reaction, and the ozone in the ozone contact tank degrades organic macromolecules in the water into organic micromolecules, so that the biodegradation capacity of the organic matters in the water is improved, and the improvement of the adsorption and degradation capacity of the organic micromolecules in a subsequent activated carbon process is facilitated.
Preferably, the biological activated carbon filter is added with granular activated carbon to treat organic matters, SS and nitrification deamination nitrogen, the treated sewage is discharged to the disinfection tank for disinfection treatment, the specific surface area of the activated carbon is large, the activated carbon is in a pore structure and has good adsorption performance, and a plurality of aerobic bacteria are propagated in the biological activated carbon filter and are beneficial to adsorbing and degrading small molecular organic matters on the surface of the activated carbon, so that the biological activated carbon has two functions of physical adsorption and biological oxidation degradation, in addition, after the organic matters are decomposed in pores of the activated carbon, a biomembrane adsorbed in the pores of the activated carbon is removed after being washed, and the adsorption capacity of the organic matters and dissolved oxygen can be recovered.
Preferably, the thickness of the sludge layer in the secondary sedimentation tank is controlled within one fourth of the depth of the sewage in the secondary sedimentation tank, if the sludge liquid level is too high, the possibility of overflow and mud floating is increased, the economic cost of operation is increased by high-concentration sludge, microorganisms grow excessively, and the water quality is deteriorated; the sludge with low concentration leads to high sludge load and poor pollution control effect, the sludge treatment is carried out in the sludge tank for 2-4 days to prevent blockage, the treatment time of the anaerobic tank is 2-3 hours, the treatment time of the anoxic tank is 5-6 hours, and the treatment time of the aerobic tank is 10-11 hours.
Compared with the prior art, the utility model has the following advantages:
1. the sewage treatment load rate is high, the impact load resistance is high, the water quality of inlet water is not limited, and the water quality of outlet water is stable;
2. the environmental pollution caused by industrial sewage discharge is reduced, the environmental pressure caused by substandard sewage discharge is eliminated, and the investment of newly added water treatment equipment is reduced;
3. the effluent reaches the reuse standard of reclaimed water, and can be used for fire-fighting water or other production water such as sludge cleaning and the like.
Drawings
FIG. 1 is a schematic view of the structure of an industrial sewage treatment system according to the present invention.
The components in the figures are numbered as follows:
an adjusting tank 1, a primary sedimentation tank 2, an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5, a secondary sedimentation tank 6, a sludge tank 7, an ozone contact tank 8, a biological activated carbon filter tank 9 and a disinfection tank 10.
Detailed Description
The utility model is described in further detail below with reference to the figures and the specific embodiments.
As shown in figure 1, the industrial sewage treatment system comprises an adjusting tank 1, wherein the adjusting tank 1 is sequentially connected with a primary sedimentation tank 2, an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5 and a secondary sedimentation tank 6, the primary sedimentation tank 2 and the secondary sedimentation tank 6 are communicated with a sludge tank 7, the aerobic tank 5 flows back to the anoxic tank 4 to form an anoxic tank-aerobic tank backflow system, and the secondary sedimentation tank 6 is further sequentially connected with an ozone contact tank 8, a biological activated carbon filter tank 9 and a disinfection tank 10.
Wherein, sewage lets in equalizing basin 1, and the thickness grid through in the equalizing basin 1 carries out the prefiltration, intercepts large granule impurity in the sewage and controls sewage PH to 7, carries the sewage after will handling preliminary sedimentation tank 2.
The primary sedimentation tank 2 sediments small particle impurities, the treated sewage is introduced into the anaerobic tank 3, and the sludge is introduced into the sludge tank 7.
The anaerobic tank 3 releases phosphorus through phosphorus accumulating bacteria, absorbs organic matters easy to degrade, and introduces the treated sewage into the anoxic tank 4.
The anoxic tank 4 converts nitrate brought by internal reflux into nitrogen to escape into the atmosphere through biological denitrification by denitrifying bacteria, and the treated sewage is introduced into the aerobic tank 5.
The aerobic tank 5 converts ammonia nitrogen in the sewage and ammonia nitrogen formed by ammoniation of organic nitrogen into nitrate through biological nitrification, phosphorus-accumulating bacteria excessively absorb phosphorus, the phosphorus is removed through discharge of residual sludge, then the sewage flows back to the anoxic tank 4, the reflux ratio of the sludge is 100%, the reflux ratio of mixed liquor is 100% -200%, and after the reflux is finished, the sewage is introduced into the secondary sedimentation tank 6.
And (3) carrying out secondary sedimentation in a secondary sedimentation tank 6 to separate water flow and sludge, introducing the sludge into a sludge tank 7, and discharging the treated sewage to an ozone contact tank 8.
The ozone contact tank 8 oxidizes the organic matters in the water into carbon dioxide through ozone, the ammonia nitrogen is converted into nitre peptide ammonia nitrogen, and the treated sewage is discharged to the biological activated carbon filter tank 9 after reaction.
The biological activated carbon filter 9 is used for treating organic matters, SS and nitrification deamination nitrogen by adding granular activated carbon, and discharging the treated sewage to a disinfection tank 10 for disinfection treatment.
The thickness of the sludge layer in the secondary sedimentation tank 6 is controlled within one fourth of the depth of the sewage in the secondary sedimentation tank 6, the sludge treatment is carried out in the sludge tank 7 for 2 to 4 days, the treatment time of the anaerobic tank 3 is 2 to 3 hours, the treatment time of the anoxic tank 4 is 5 to 6 hours, and the treatment time of the aerobic tank 5 is 10 to 11 hours.
After putting this example into practical use, the results are as follows:
item one
And (3) factory sewage treatment project: 120t/d
The quality of the inlet water is as follows (unit: mg/L):
in equalizing basin 1, carry out prefilter through the coarse and fine grid to the large granule in the sewage, control sewage and lead to sewage in the preliminary sedimentation tank 2 under the condition that PH is 7.
Coagulant and flocculant are added into the primary sedimentation tank 2 to precipitate small particle impurities, sewage is introduced into the anaerobic tank 3, and sludge is pumped into the sludge tank 7.
The sewage passes through an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5 and a secondary sedimentation tank 6, and the residence time of each section is as follows: 2.6 hours of an anaerobic section, 5.1 hours of an anoxic section, 11.1 hours of an aerobic section, 100 percent of sludge reflux ratio, 100 to 200 percent of mixed liquor reflux ratio and 2.1 hours of sedimentation time of a secondary sedimentation tank 6.
The sewage treated by the secondary sedimentation tank 6 is treated by the ozone contact tank 8, the ozone in the ozone contact tank 8 degrades organic macromolecules in the water into organic micromolecules, the biodegradation capacity of organic matters in the water is improved, the adsorption and degradation capacity of the organic micromolecules in a subsequent activated carbon process is improved, the organic matters in the water are oxidized into carbon dioxide by the ozone, the ammonia nitrogen is converted into nitre peptide ammonia nitrogen, and the treated sewage is discharged to the biological activated carbon filter tank 9 after reaction.
The biological activated carbon filter 9 is added with granular activated carbon, the specific surface area of the activated carbon is large, the activated carbon is in a pore structure and has good adsorption performance, and a plurality of aerobic bacteria are propagated in the biological activated carbon filter 9 and are beneficial to adsorbing and degrading micromolecular organic matters on the surface of the activated carbon, so that the biological activated carbon has two functions of physical adsorption and biological oxidation degradation. After the organic matter is decomposed in the active carbon pores, the biological membrane adsorbed in the active carbon pores is washed and removed, the adsorption capacity of the organic matter and dissolved oxygen can be recovered, the organic matter, SS and nitrification deamination nitrogen are deeply treated by the biological active carbon filter 9, and the treated sewage is discharged to the disinfection tank 10 for disinfection treatment.
The effluent quality is as follows (unit: mg/L):
item two
And (3) factory sewage treatment project: 150t/d
The quality of the inlet water is as follows (unit: mg/L):
in equalizing basin 1, carry out prefilter through the coarse and fine grid to the large granule in the sewage, control sewage and lead to sewage in the preliminary sedimentation tank 2 under the condition that PH is 7.
Coagulant and flocculant are added into the primary sedimentation tank 2 to precipitate small particle impurities, sewage is introduced into the anaerobic tank 3, and sludge is pumped into the sludge tank 7.
The sewage passes through an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5 and a secondary sedimentation tank 6, and the residence time of each section is as follows: 2.6 hours of an anaerobic section, 5.1 hours of an anoxic section, 11.1 hours of an aerobic section, 100 percent of sludge reflux ratio, 100 to 200 percent of mixed liquor reflux ratio and 2.1 hours of sedimentation time of a secondary sedimentation tank 6.
The sewage treated by the secondary sedimentation tank 6 is treated by the ozone contact tank 8, the ozone in the ozone contact tank 8 degrades organic macromolecules in the water into organic micromolecules, the biodegradation capacity of organic matters in the water is improved, the adsorption and degradation capacity of the organic micromolecules in a subsequent activated carbon process is improved, the organic matters in the water are oxidized into carbon dioxide by the ozone, the ammonia nitrogen is converted into nitre peptide ammonia nitrogen, and the treated sewage is discharged to the biological activated carbon filter tank 9 after reaction.
The biological activated carbon filter 9 is added with granular activated carbon, the specific surface area of the activated carbon is large, the activated carbon is in a pore structure and has good adsorption performance, and a plurality of aerobic bacteria are propagated in the biological activated carbon filter 9 and are beneficial to adsorbing and degrading micromolecular organic matters on the surface of the activated carbon, so that the biological activated carbon has two functions of physical adsorption and biological oxidation degradation. After the organic matter is decomposed in the active carbon pores, the biological membrane adsorbed in the active carbon pores is washed and removed, the adsorption capacity of the organic matter and dissolved oxygen can be recovered, the organic matter, SS and nitrification deamination nitrogen are deeply treated by the biological active carbon filter 9, and the treated sewage is discharged to the disinfection tank 10 for disinfection treatment.
The effluent quality is as follows (unit: mg/L):
the industrial sewage treatment system has high sewage treatment load rate, high impact load resistance, no limitation on the quality of inlet water and stable quality of outlet water; the environmental pollution caused by industrial sewage discharge is reduced, the environmental pressure caused by substandard sewage discharge is eliminated, and the investment of newly added water treatment equipment is reduced; the effluent reaches the reuse standard of reclaimed water, and can be used for fire-fighting water or other production water such as sludge cleaning and the like.
Claims (10)
1. An industrial sewage treatment system, includes equalizing basin (1), its characterized in that: equalizing basin (1) has connected gradually just sedimentation tank (2), anaerobism pond (3), oxygen deficiency pond (4), good oxygen pond (5) and two heavy ponds (6), just sedimentation tank (2) and two heavy ponds (6) are linked together with sludge impoundment (7), good oxygen pond (5) flow back extremely oxygen deficiency pond (4) form oxygen deficiency pond-good oxygen pond return-flow system, two heavy ponds (6) still link gradually ozone contact tank (8), biological activity carbon filter (9) and disinfection pond (10).
2. The industrial wastewater treatment system according to claim 1, wherein: sewage is introduced into the adjusting tank (1), primary filtration is carried out through a coarse and fine grid in the adjusting tank (1), large-particle impurities in the sewage are intercepted, the PH of the sewage is controlled to 7, and the treated sewage is conveyed to the primary sedimentation tank (2).
3. The industrial wastewater treatment system according to claim 1, wherein: the primary sedimentation tank (2) is used for settling small-particle impurities, the treated sewage is introduced into the anaerobic tank (3), and the sludge is introduced into the sludge tank (7).
4. The industrial wastewater treatment system according to claim 1, wherein: the anaerobic tank (3) releases phosphorus through phosphorus accumulating bacteria, absorbs organic matters easy to degrade, and introduces the treated sewage into the anoxic tank (4).
5. The industrial wastewater treatment system according to claim 1, wherein: the anoxic tank (4) converts nitrate brought by internal reflux into nitrogen to escape into the atmosphere through biological denitrification by denitrifying bacteria, and the treated sewage is introduced into the aerobic tank (5).
6. The industrial wastewater treatment system according to claim 1, wherein: the aerobic tank (5) converts ammonia nitrogen in the sewage and ammonia nitrogen formed by ammoniation of organic nitrogen into nitrate through biological nitrification, phosphorus accumulating bacteria excessively absorb phosphorus, the phosphorus is removed through discharge of residual sludge, then the sewage flows back to the anoxic tank (4), the sludge reflux ratio is 100%, the mixed liquid reflux ratio is 100-200%, and after the reflux is finished, the sewage is introduced into the secondary sedimentation tank (6).
7. The industrial wastewater treatment system according to claim 1, wherein: and the secondary sedimentation tank (6) is used for carrying out secondary sedimentation to separate water flow and sludge, the sludge is introduced into the sludge tank (7), and the treated sewage is discharged to the ozone contact tank (8).
8. The industrial wastewater treatment system according to claim 1, wherein: the ozone contact tank (8) oxidizes organic matters in water into carbon dioxide through ozone, ammonia nitrogen is converted into nitre peptide ammonia nitrogen, and the treated sewage is discharged to the biological activated carbon filter tank (9) after reaction.
9. The industrial wastewater treatment system according to claim 1, wherein: the biological activated carbon filter (9) is used for treating organic matters, SS and nitrification deamination nitrogen by adding granular activated carbon, and discharging the treated sewage to the disinfection tank (10) for disinfection treatment.
10. The industrial wastewater treatment system according to claim 1, wherein: the thickness of a sludge layer in the secondary sedimentation tank (6) is controlled within one fourth of the depth of sewage in the secondary sedimentation tank (6), the sludge is treated once in the sludge tank (7) within 2-4 days, the treatment time of the anaerobic tank (3) is 2-3 hours, the treatment time of the anoxic tank (4) is 5-6 hours, and the treatment time of the aerobic tank (5) is 10-11 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122971226.4U CN216639205U (en) | 2021-11-30 | 2021-11-30 | Industrial sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122971226.4U CN216639205U (en) | 2021-11-30 | 2021-11-30 | Industrial sewage treatment system |
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| CN216639205U true CN216639205U (en) | 2022-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117843198A (en) * | 2024-02-23 | 2024-04-09 | 重庆国际生物城开发投资有限公司 | Low-dissolved oxygen high-mud age treatment process for sewage treatment |
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- 2021-11-30 CN CN202122971226.4U patent/CN216639205U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117843198A (en) * | 2024-02-23 | 2024-04-09 | 重庆国际生物城开发投资有限公司 | Low-dissolved oxygen high-mud age treatment process for sewage treatment |
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