CN207525110U - A kind of sewage disposal system - Google Patents
A kind of sewage disposal system Download PDFInfo
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- CN207525110U CN207525110U CN201721418430.0U CN201721418430U CN207525110U CN 207525110 U CN207525110 U CN 207525110U CN 201721418430 U CN201721418430 U CN 201721418430U CN 207525110 U CN207525110 U CN 207525110U
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- Prior art keywords
- sludge
- sewage disposal
- disposal system
- sedimentation basin
- air pump
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- 239000010865 sewage Substances 0.000 title claims abstract description 42
- 239000010802 sludge Substances 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000004062 sedimentation Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 18
- 230000001954 sterilising effect Effects 0.000 claims abstract description 13
- 230000001112 coagulating effect Effects 0.000 claims abstract description 11
- 238000005273 aeration Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 230000009189 diving Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004064 recycling Methods 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 5
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 12
- 229910052698 phosphorus Inorganic materials 0.000 description 12
- 239000011574 phosphorus Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 239000000701 coagulant Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 230000003559 chemosterilizing effect Effects 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003206 sterilizing agent Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 229910001463 metal phosphate Inorganic materials 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical class [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000003450 growing effect Effects 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a kind of sewage disposal system, which is characterized in that including sequentially connected first sedimentation basin, anaerobic pond, aerobic tank, the second sedimentation basin, coagulating basin, sterilization pool；Sludge circulation channel is further included, the sludge circulation channel includes sludge reaction tank, and sludge reaction tank input terminal is connect with the second sedimentation basin, and output terminal is connect with anaerobic pond, and the sludge reaction tank is the retort that sludge is handled using ferrate.This system can reach effectively except the nitrogen phosphorus composition contained in decontaminated water and preferably denitrogenate phosphor-removing effect, and can effectively realize the recycling of sludge.
Description
Technical field
The utility model is related to sewage treatment field, more particularly to a kind of sewage disposal system.
Background technology
Worldwide, particularly in developing country, the work given off from various industrial processes
Industry sewage causes serious harm to environment, heavy financial burden is brought to government and enterprise, environmental problem is
Cause the great attention of government.
In sewage disposal, main organics removal, while dephosphorization, denitrogenation is handled this containing organic matter, phosphorus at present
The method of sewage mainly has anaerobic-aerobic process, anaerobic- anoxic- oxic and activated sludge process etc..Using more widely detesting
Oxygen-anaerobic-aerobic biochemistry dephosphorization and denitrification process, but process above cannot reach one and denitrogenate phosphor-removing effect well.Secondly
The sludge for needing to discharge can be generated using Sewage Treatment for Activated Sludge, and due to containing large amount of organic, ammonia in the sludge of discharge
The substances such as nitrogen, phosphorus, heavy metal, and moisture therein is high so that and the recycling degree of sludge is not high.
Utility model content
In view of this, the utility model provides a kind of sewage disposal system.This system can effectively remove what is contained in decontaminated water
Nitrogen phosphorus composition reaches and preferably denitrogenates phosphor-removing effect, and can effectively realize the recycling of sludge.
For solution more than technical problem, the technical solution of the utility model is to use a kind of sewage disposal system, feature
It is, including sequentially connected first sedimentation basin, anaerobic pond, aerobic tank, the second sedimentation basin, coagulating basin, sterilization pool；Further include dirt
Mud circulation canal, the sludge circulation channel include sludge reaction tank, and sludge reaction tank input terminal is connect with the second sedimentation basin, defeated
Outlet is connect with anaerobic pond, and the sludge reaction tank is the retort that sludge is handled using ferrate.
Preferably, thick lattice column is further included, the thick lattice column is connect with the first sedimentation basin.
Preferably, submersible agitator is further included, the submersible agitator is arranged in aerobic tank, coagulating basin and sterilization pool.
Preferably, aeration tube is additionally provided in the aerobic tank, the aeration tube one end is set in aerobic tank, the other end
It is in communication with the outside, the aeration tube side wall has multiple blow vents.
Preferably, the aeration tube includes lateral tube body and is set to lateral tube wall and the VERTICAL TUBE communicated therewith
Body.
Preferably, air pump is further included, the air pump output terminal is connected with aeration tube.
Preferably, air pump control valve is further included, the air pump control valve is set to air pump input terminal.
Preferably, the sterilization pool further includes the UV-light luminous component being set in the middle part of pond body.
Preferably, the UV-light luminous component includes multiple ultra-violet light-emitting pipes being vertically arranged, the ultra-violet light-emitting pipe
Spacing is 3-6cm.
More preferably, sludge dewatering equipment is further included, the sludge dewatering equipment input terminal is connect with the second sedimentation basin, output
End is in communication with the outside.
The sewage disposal system of the offer of the utility model is rational in infrastructure, sewage treating efficiency is high, can effectively remove dirt
The nitrogen phosphorus composition contained in water reaches and preferably denitrogenates phosphor-removing effect.Water after treatment can be suitable for industrial water, reach
To the target of waste water recycling, recycling for resource is realized.
Coagulating basin is set after the second sedimentation basin, by the effect of coagulant, can further remove the phosphorus in water removal, sterilization pool
In be not provided only with UV-light luminous component, by the stirring action of submersible agitator, carry out disinfection to water body, can also be wherein
Chemosterilant is added in, further improves disinfection efficiency.
It sludge is generated in second sedimentation basin is passed through in sludge reaction tank and acted on ferrate, sludge reaction tank can will be dirty
Internal ammonia nitrogen, phosphorus, heavy metal, organic matter are combined in water by Enrichment by Microorganisms to be discharged into water body and sludge, and aoxidize, decompose
Some reluctant substances, are then passed through in system again, improve the efficiency of sludge recycling.
Description of the drawings
Fig. 1, the utility model flow chart.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the technical solution of the utility model, with reference to specific implementation
The utility model is described in further detail for mode.
In sewage disposal, main organics removal, while dephosphorization, denitrogenation, the water quality of industrial wastewater is more severe, sewage
Treatment plant's reality is into water pollutant index all more than design influent quality, and be chronically at exceeded into water state, water quality situation
Variation is also complex, water often occurs and continues the situation for reaching COD (COD)=more than 1500mg/l for 5~7 days,
The average value of influent COD is also in 1000mg/l or so.And biochemical oxygen demand (BOD) (BOD5)：The ratio of COD (COD) is past
Toward between 0.2-0.3, it is more difficult to biochemical treatment.
And sewage treatment plant can generate a large amount of sludge, and the subsequent processing of sludge is a great problem.Sludge generally passes through
Following methods are handled：1st, it is utilized sludge as fertilizer.Due to contain in sludge a large amount of organic matter and nitrogen,
Micro- necessary to the biology growings such as phosphorus, potassium, sludge tool can make full use of for organism, still, contain in sludge
A large amount of poisonous and harmful substances, such as benzene, insecticide and some heavy metals, so as to cause the pollution in soil, and also it is plants enriched
Poisonous and harmful substances enter human body with food chain, human body is damaged.2nd, sludge is subjected to harmless treatment, then
Filled, but this method there are sludge intractability it is big, transportation cost is high, appropriation of land rate is high the problems such as, and
And it can also destroy the environment in landfill area.
Embodiment
As shown in Figure 1, the utility model flow is as follows：
1) sewage enters coarse rack to remove the suspended material in sewage, deposit,
2) sewage is precipitated into the first sedimentation basin,
3) sewage enters anaerobic pond reaction, subsequently enters aerobic tank reaction, is precipitated subsequently into the second sedimentation basin.It is heavy
The sludge that shallow lake pond generates has two passes to be handled, wherein one is sludge circulation channel, including sludge reaction tank, sludge into
Enter sludge reaction tank, handled by the ferrate in retort so that organic substance is oxidized to the harmless objects such as titanium dioxide state, water
Matter；Secondly, the substances such as internal ammonia nitrogen, phosphorus are enriched in by organism and are released, are reacted by importeding into anaerobic pond, and
Subsequent aerobic tank can be entered to react.For another access for the outer wan access of sludge, the sludge for not entering circulation canal passes through sludge
After dewaterer processing, export systems carry out subsequent processing or utilization.
4) through the second sedimentation basin treated sewage, coagulating basin is entered, in coagulating basin under the action of coagulant, into one
Step is except the phosphorus composition of decontaminated water.Coagulant causes organophosphor soluble in water and poly- phosphorus to form the metal phosphate for being insoluble in water,
Then metal phosphate is removed by physical sedimentation.Coagulant is generally metallic salt, including：Quick lime, ferric sulfate, aluminum sulfate
Deng orthophosphates being made to be replaced as the phosphate of indissoluble, with excess sludge discharge system after coagulative precipitation.It can be according to phosphor in sewage
Exceeded degree adjust coagulant charging quantity at any time.
5) water body after coagulation for phosphorus removal enters sterilization pool, by the UV-light luminous component that is set in sterilization pool and
It under the action of the chemosterilant added in pond body, further sterilizes, chlorine-containing disinfectant can be selected in chemosterilant, final to obtain
It disclosure satisfy that the water resource of standards for industrial water usage.
Process step 3) in sludge reaction tank sludge is handled using ferrate, in ferrate have sexavalence
Iron, be respectively provided with very high oxidisability under acid condition and alkaline condition, but also originate in raw ferric iron there is flocculation, inhale
The effects that attached, precipitation, can by water body various suspensions, solid particulate matter precipitates.The ferrate of high oxidative
The substances such as the various protein in the cell wall, cell membrane and cell of bacterium can be destroyed, so as to kill bacterium.Pass through simultaneously
The hydrolysate of ferrate is come algae, the bacterium in the water body that flocculates.In addition, the organic substance in water body can be oxidized to dioxy
Change the substances such as carbon, water, realize the purpose of purification.
By treated the sludge of the ferrate in retort, can again imported into anaerobic pond or aerobic tank,
And the circular treatment in sewage disposal system, by aerobic reaction, anaerobic reaction, precipitation the effects that, make in sewage it is toxic, have
Evil substance can more thoroughly remove and substantially reduce the yield of sludge.
Process step 3) in aerobic tank be provided with aerating pipelines, due to aerobic tank need oxygen carry out aerobic reaction,
Therefore, it is necessary to be passed through oxygen into aerobic tank, to promote the metabolism of aerobe.Storage, the transport of oxygen are relatively inconvenient, and one
As air is passed through into aerobic tank, contacted by air with water, oxygen made to be dissolved in the water.In order to enable the oxygen in air more
Add and be sufficiently dissolved in water, sewage disposal system is provided with air pump and the aeration tube for being passed through air to aerobic tank.Aeration
Pipe side wall has multiple blow vents, including lateral tube body and the vertical tube body for being set to lateral tube wall and communicating therewith.Aeration
Air is passed through with the traveling disperseed in water by pipe, and the water and the contact area of air made increases, so as to improve dissolved oxygen amount.In order to just
It is controlled in amount of oxygen, air pump control valve is installed in air pump input terminal, can freely control being passed through for oxygen.
Process step 5) in, sterilization pool includes disinfection pond body and the UV-light luminous component being set in the middle part of pond body.It is purple
Outer smooth luminescence component includes multiple ultra-violet light-emitting pipes being vertically arranged, and adjacent ultra-violet light-emitting tube spacing is 3-6cm.
In addition, submersible agitator is fitted in aerobic tank, coagulating basin and sterilization pool, and speed up processing, raising processing
Efficiency.
It is handled by above-mentioned sewage disposal system, the front and rear comparison of sewage disposal is as shown in table 1.
Table 1, sewage disposal evaluation result
| Assessment item | CODcr(mg/l) | BOD5(mg/l) | Ammonia nitrogen (mg/l) | Suspended matter (mg/l) |
| Before processing | 600 | 180 | 80 | 500 |
| After processing | 80 | 20 | 10 | 40 |
| Degree for the treatment of | 86.67 | 88.89 | 87.5 | 92 |
In conclusion the sewage disposal system of the offer of the utility model is rational in infrastructure, sewage treating efficiency is high, Neng Gouyou
The nitrogen phosphorus composition contained in effect removal sewage, reaches and preferably denitrogenates phosphor-removing effect.Water after treatment can be suitable for work
Industry water reaches the target of waste water recycling, realizes recycling for resource.Coagulating basin is set after the second sedimentation basin, by mixed
The effect of solidifying agent can further remove the phosphorus in water removal, not be provided only with UV-light luminous component in sterilization pool, pass through submersible agitating
The stirring action of device, carries out disinfection to water body, can also add in chemosterilant wherein, further improve disinfection efficiency.Second
Sludge generated in sedimentation basin be passed through in sludge reaction tank and acted on ferrate, sludge reaction tank can by sewage by microorganism
It is enriched in internal ammonia nitrogen, phosphorus, heavy metal, organic matter to be discharged into water body and sludge, and aoxidizes, decomposes some and be difficult to handle
Substance, be then passed through in system again, improve sludge recycling efficiency.
It the above is only the preferred embodiment of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For the limitation to the utility model, the scope of protection of the utility model should be subject to claim limited range.For
For those skilled in the art, without departing from the spirit and scope of the utility model, it can also make several
Improvements and modifications, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of sewage disposal system, which is characterized in that including sequentially connected first sedimentation basin, anaerobic pond, aerobic tank, second
Sedimentation basin, coagulating basin, sterilization pool；Sludge circulation channel is further included, the sludge circulation channel includes sludge reaction tank, and sludge is anti-
Tank input terminal is answered to be connect with the second sedimentation basin, output terminal is connect with anaerobic pond, the sludge reaction tank be using ferrate at
Manage the retort of sludge.
2. sewage disposal system according to claim 1, which is characterized in that further include thick lattice column, the thick lattice column and
One sedimentation basin connects.
3. sewage disposal system according to claim 1, which is characterized in that further include submersible agitator, the diving stirs
Device is mixed to be arranged in aerobic tank, coagulating basin and sterilization pool.
4. sewage disposal system according to claim 1, which is characterized in that aeration tube is additionally provided in the aerobic tank,
The aeration tube one end is set in aerobic tank, and the other end is in communication with the outside, and the aeration tube side wall has multiple blow vents.
5. sewage disposal system according to claim 4, which is characterized in that the aeration tube includes lateral tube body and setting
In lateral tube wall and the vertical tube body that communicates therewith.
6. sewage disposal system according to claim 5, which is characterized in that further include air pump, the air pump output terminal with
Aeration tube connects.
7. sewage disposal system according to claim 6, which is characterized in that further include air pump control valve, the air pump control
Valve processed is set to air pump input terminal.
8. sewage disposal system according to claim 1, which is characterized in that the sterilization pool, which further includes, to be set in pond body
The UV-light luminous component in portion.
9. sewage disposal system according to claim 8, which is characterized in that the UV-light luminous component includes multiple perpendicular
The ultra-violet light-emitting pipe of in line row, the ultra-violet light-emitting tube spacing are 3-6cm.
10. sewage disposal system according to claim 1, which is characterized in that further include sludge dewatering equipment, the sludge takes off
Water dispenser input terminal is connect with the second sedimentation basin, and output terminal is in communication with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721418430.0U CN207525110U (en) | 2017-10-30 | 2017-10-30 | A kind of sewage disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721418430.0U CN207525110U (en) | 2017-10-30 | 2017-10-30 | A kind of sewage disposal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207525110U true CN207525110U (en) | 2018-06-22 |
Family
ID=62571437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721418430.0U Expired - Fee Related CN207525110U (en) | 2017-10-30 | 2017-10-30 | A kind of sewage disposal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207525110U (en) |
-
2017
- 2017-10-30 CN CN201721418430.0U patent/CN207525110U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180622 |