CN210683344U - Sewage treatment system - Google Patents
Sewage treatment system Download PDFInfo
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- CN210683344U CN210683344U CN201921564549.8U CN201921564549U CN210683344U CN 210683344 U CN210683344 U CN 210683344U CN 201921564549 U CN201921564549 U CN 201921564549U CN 210683344 U CN210683344 U CN 210683344U
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- pipe
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- 239000010865 sewage Substances 0.000 title claims abstract description 27
- 239000010802 sludge Substances 0.000 claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000004062 sedimentation Methods 0.000 claims abstract description 31
- 238000005273 aeration Methods 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 18
- 230000001079 digestive effect Effects 0.000 claims abstract description 15
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- 206010021143 Hypoxia Diseases 0.000 claims abstract description 3
- 238000005276 aerator Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 229910052698 phosphorus Inorganic materials 0.000 description 11
- 239000011574 phosphorus Substances 0.000 description 11
- 241000894006 Bacteria Species 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000006228 supernatant Substances 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000002848 electrochemical method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002503 metabolic effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 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 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a sewage treatment system, including intercommunication anaerobism pond, oxygen deficiency pond, good oxygen pond and the sedimentation tank of setting on same horizontal plane in proper order, its characterized in that still includes: the anaerobic sludge tank is communicated with the anoxic tank at the bottom through a water outlet pipe, the anoxic tank is communicated with the aerobic tank at the upper part through a water outlet pipe, and the aerobic tank is communicated with the sedimentation tank at the upper part and the bottom through a water outlet pipe and a sludge discharge pipe respectively; the sedimentation tank comprises a sludge sedimentation tank and a clean water tank, a first sludge return pipe is arranged in the sludge sedimentation tank, the anaerobic sludge tank is provided with a second sludge return pipe for returning sludge to the anaerobic tank, and the first sludge return pipe and the second sludge return pipe are both connected with a sludge pump; a digestive juice gas stripping device is arranged in the aerobic tank, one end of the digestive juice gas stripping device is connected with the aeration device, and the other end of the digestive juice gas stripping device is communicated with the anaerobic tank through a pipeline. The utility model discloses technical scheme aims at providing the sewage treatment system that can effectual reduction sludge output and improve dephosphorization effect.
Description
Technical Field
The utility model relates to a sewage treatment device technical field, in particular to sewage treatment system.
Background
With the increasing population base and the rapid development of industry in recent years, the sewage discharge amount is increasing day by day, the water resource pollution condition is getting more serious, the sludge amount generated in the sewage treatment process is also increased synchronously, and the sludge treatment situation is severe. The sludge is used as an important component of sewage, contains a large amount of bacteria, viruses, heavy metals, biologically refractory organic matters and other harmful substances, and the sludge which is not properly treated is easy to cause secondary pollution to the environment, so that the construction of a green, environment-friendly and economic pace is slowed down. The problem of water pollution has become a troublesome problem in all countries around the world, and sewage treatment is urgent.
The existing domestic sewage treatment equipment comprises an ozone oxidation method, an electrochemical method, an ultrasonic sound method, an activated sludge method, a multistage AO (anaerobic-oxic) process and the like, which are used for removing nitrogen and phosphorus pollutants in domestic sewage. The ozone oxidation method, the electrochemical method and the ultrasonic sonification method have the advantages of large investment, high power consumption, high operation cost and low efficiency; the multi-stage AO process results in large sludge backflow amount, complex process, energy consumption, complex operation, high cost and large amount of sludge generation in the sewage treatment process. And because a large amount of nitrate exists in the sludge which flows back to the anaerobic section, the anaerobic environment of the anaerobic section is destroyed, and the phosphorus release effect of the anaerobic section is not good; the sludge reflux amount is large, and the operation energy consumption is large; the carbon source of the anoxic section is easy to be insufficient, and the denitrification treatment effect is influenced.
Therefore, there is a need for a new sewage treatment system.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a sewage treatment system which can effectively reduce the sludge yield and improve the dephosphorization effect.
In order to achieve the above object, the utility model provides a sewage treatment system, including intercommunication anaerobism pond, oxygen deficiency pond, good oxygen pond and the sedimentation tank of setting on same horizontal plane in proper order, still include: the anaerobic sludge tank is communicated with the anoxic tank at the bottom through a water outlet pipe, the anoxic tank is communicated with the aerobic tank at the upper part through a water outlet pipe, and the aerobic tank is communicated with the sedimentation tank at the upper part and the bottom through a water outlet pipe and a sludge discharge pipe respectively; the sedimentation tank comprises a sludge sedimentation tank and a clean water tank, the sludge sedimentation tank is communicated with the upper part of the clean water tank, the clean water tank is communicated with an external drain pipe, a first sludge return pipe for returning sludge to the anaerobic sludge tank is arranged in the sludge sedimentation tank, the anaerobic sludge tank is provided with a second sludge return pipe for returning sludge to the anaerobic tank, and the first sludge return pipe and the second sludge return pipe are both connected with a sludge pump; and a digestive juice gas stripping device for refluxing the digestive juice gas to the anaerobic tank is arranged in the aerobic tank, one end of the digestive juice gas stripping device is connected with an aeration device, and the other end of the digestive juice gas stripping device is communicated with the anaerobic tank through a pipeline.
Preferably, the bottom of the aerobic tank is also provided with an aerator, and the aerator is connected with the aeration device.
Preferably, the aerobic tank is also provided with a mobile biological filler.
Preferably, a perforated pipe aeration device is arranged in the anoxic tank and is connected with the aeration device.
Preferably, a fixed biological filler is also arranged in the anoxic pond.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the equipment has simple structure, convenient installation, excellent treatment effect and effective reduction of subsequent process load.
2. An anaerobic sludge tank is added at the sludge return section behind the sedimentation tank, an anaerobic/aerobic alternate environment is constructed for microorganisms, the microorganisms in the sludge can not carry out normal metabolic activity, and the sludge yield can be effectively reduced.
3. The device is additionally provided with the sludge anaerobic tank after the sedimentation tank, and a backflow measure is added, so that the anaerobic retention time of the sludge is prolonged, phosphorus-accumulating bacteria (PAOs) can release phosphorus more fully, the phosphorus removal effect is greatly improved, and in the sludge anaerobic tank, phosphorus can be released by the phosphorus-accumulating bacteria in a certain proportion firstly, the phosphorus-accumulating bacteria in an aerobic zone have obvious influence, and phosphorus can be better absorbed. And no extra medicament is needed to be added in the operation process, so that the cost of sewage treatment can be effectively saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The sewage treatment system provided by this embodiment, as shown in fig. 1, includes an anaerobic tank 100, an anoxic tank 200, an aerobic tank 300, and a sedimentation tank 400, which are sequentially connected to each other and are disposed on the same horizontal plane, and further includes: the anaerobic sludge tank 500, the anaerobic tank 100 and the anoxic tank 200 are communicated at the bottom through a water outlet pipe, the anoxic tank 200 and the aerobic tank 300 are communicated at the upper part through a water outlet pipe, and the aerobic tank 300 and the sedimentation tank 400 are communicated at the upper part and the bottom through a water outlet pipe and a sludge discharge pipe respectively; the sedimentation tank 400 comprises a sludge settling tank 410 and a clean water tank 420, the sludge settling tank 410 is communicated with the upper part of the clean water tank 420, the clean water tank 420 is communicated with an external drain pipe, a first sludge return pipe 411 for returning sludge to the anaerobic sludge tank 500 is arranged in the sludge settling tank 410, and the other end of the first sludge return pipe 411 is communicated with the anaerobic sludge tank 500; the anaerobic sludge tank 500 is provided with a second sludge backflow pipe 510 for returning sludge to the anaerobic tank 100, and the other end of the second sludge backflow pipe 510 is communicated with the anaerobic tank 100; the first sludge return pipe 411 and the second sludge return pipe are both connected with a sludge pump; a digestive juice gas stripping device 600 for refluxing the digestive juice gas to the anaerobic tank 100 is arranged in the aerobic tank 300, one end of the digestive juice gas stripping device 600 is connected with the aeration device 700, and the other end is communicated with the anaerobic tank 100 through a pipeline.
The technical proposal of the utility model is that the anaerobic sludge tank 500 is added at the sludge return section behind the sedimentation tank 400, so as to construct an anaerobic/aerobic alternative environment for the microorganism, and the microorganism in the sludge can not carry out normal metabolic activity, thus effectively reducing the sludge yield; and in the sludge anaerobic tank 100, a certain proportion of phosphorus accumulating bacteria can firstly release phosphorus, which has obvious influence on the phosphorus accumulating bacteria in an aerobic zone and can better absorb phosphorus. And no extra medicament is needed to be added in the operation process, so that the cost of sewage treatment can be effectively saved. The utility model discloses technical scheme still possesses this equipment simple structure, simple to operate, and the treatment effect is good, the effectual characteristics that reduce follow-up technology load.
Further, in the embodiment of the present invention, an aerator 310 is further disposed at the bottom of the aerobic tank 300, and the aerator 310 is connected to the aeration device 700.
Further, in the embodiment of the present invention, a mobile biological filler 320 is further disposed in the aerobic tank 300.
Further, in the embodiment of the present invention, a perforated pipe aeration apparatus 210 is disposed in the anoxic tank 200, and the perforated pipe aeration apparatus 210 is connected to the aeration device 700.
Further, in the embodiment of the present invention, a biological filler 220 is further disposed in the anoxic tank 200.
The sewage treatment system in the utility model mainly comprises an anaerobic tank 100, an anoxic tank 200, an aerobic tank 300, a sedimentation tank 400 and a sludge anaerobic tank 100. The sewage is lifted into the equipment by a water pump, and biochemical degradation and precipitation separation of the sewage are realized by the anaerobic tank 100, the anoxic tank 200, the aerobic tank 300, the sedimentation tank 400 and the sludge anaerobic tank 100, wherein the aerobic tank 300 is provided with a digestive juice gas stripping device 600, the mixed liquid flows back to the anoxic tank 200, the sedimentation tank 400 is provided with a first sludge return pipe 411, the sludge flows back to the sludge anaerobic tank 100 through the first sludge return pipe 411, and then flows back to the anaerobic tank 100 from the sludge anaerobic tank 100 through a second sludge return pipe. Effluent in the anaerobic tank 100 enters the anoxic tank 200 through a bottom water outlet pipe, then flows into the aerobic tank 300 through an upper water outlet pipe of the anoxic tank 200, completes nitration reaction in the aerobic tank 300, and simultaneously, microorganisms generate a large amount of ATP through decomposition in an aerobic stage to be stored in cells for anabolism to degrade organic matters again. And a part of the effluent of the aerobic tank 300 directly enters the sedimentation tank 400 for mud-water separation, and the supernatant is directly discharged. Part of the effluent of the aerobic tank 300 also flows back to the anaerobic tank 100 to continue the system circulation. When the sewage flows out, the sewage flows out of the anoxic tank 200 and then enters the aerobic tank 300 for treatment. And two parts of the effluent water flow out, one part of the effluent water flows back to the anoxic tank 200, the supernatant enters the sedimentation tank 400, and the sludge enters the sedimentation tank 400 from the bottom sludge discharge pipe, so that the sludge-water separation is realized. The returned sludge stays in the sludge anaerobic tank 100 and then returns to the anaerobic tank 100. Since the sludge is returned from the sludge anaerobic tank 100 into the anaerobic tank 100, it is equivalent to two phosphorus release reactions. After the nitrified liquid enters the anoxic tank 200, the activated sludge in the anoxic tank 200 utilizes the organic matters in the inlet water to denitrify the nitrate nitrogen into nitrogen gas which is released into the air, so that the aim of removing the nitrogen is fulfilled, and the anoxic tank 200 is internally provided with a perforated pipe for intermittent aeration to ensure an anoxic environment.
The utility model discloses sewage treatment system passes through the controller, controls sludge pump and aeration equipment 700 work to control the valve on first sludge return pipe 411, second sludge return pipe, aerator 310 and perforated pipe aeration equipment 210, thereby control its work operation. The bottom of the anoxic tank 200 is provided with an aerator 310 and a control valve, the concentration of dissolved oxygen can be adjusted according to the need, and a fixed biological filler 220 is arranged for the growth and the propagation of microorganisms; the aerobic tank 300 is provided with a gas stripping nitrification liquid reflux device, one end of the gas stripping nitrification liquid reflux device is connected with the anoxic tank 200, the other end of the gas stripping nitrification liquid reflux device is connected with the aeration device 700, and the mobile biological filler 320 is arranged; the sludge settled in the settling tank 400 flows back to the sludge anaerobic tank 100 through a sludge pump, and the sludge directly enters the anaerobic environment from the aerobic environment. The sedimentation tank 400 is divided into two grids, the first grid is a sludge settling tank 410 for collecting the effluent of the aerobic tank 300 and realizing sludge-water separation, and a first sludge return pipe 411 is arranged in the sludge settling tank 410; the second compartment is a clean water tank 420 for collecting the supernatant of the first compartment sedimentation tank 400, so as to realize sludge-water separation and directly discharge the supernatant.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (5)
1. The utility model provides a sewage treatment system, includes that intercommunication sets up anaerobism pond, oxygen deficiency pond, good oxygen pond and the sedimentation tank on same horizontal plane in proper order, its characterized in that still includes: the anaerobic sludge tank is communicated with the anoxic tank at the bottom through a water outlet pipe, the anoxic tank is communicated with the aerobic tank at the upper part through a water outlet pipe, and the aerobic tank is communicated with the sedimentation tank at the upper part and the bottom through a water outlet pipe and a sludge discharge pipe respectively; the sedimentation tank comprises a sludge sedimentation tank and a clean water tank, the sludge sedimentation tank is communicated with the upper part of the clean water tank, the clean water tank is communicated with an external drain pipe, a first sludge return pipe for returning sludge to the anaerobic sludge tank is arranged in the sludge sedimentation tank, the anaerobic sludge tank is provided with a second sludge return pipe for returning sludge to the anaerobic tank, and the first sludge return pipe and the second sludge return pipe are both connected with a sludge pump; and a digestive juice gas stripping device for refluxing the digestive juice gas to the anaerobic tank is arranged in the aerobic tank, one end of the digestive juice gas stripping device is connected with an aeration device, and the other end of the digestive juice gas stripping device is communicated with the anaerobic tank through a pipeline.
2. The sewage treatment system of claim 1, wherein the bottom of the aerobic tank is further provided with an aerator, and the aerator is connected with the aeration device.
3. The wastewater treatment system of claim 2, wherein the aerobic tank is further provided with a mobile biological filler.
4. The wastewater treatment system according to claim 3, wherein a perforated pipe aeration device is provided in the anoxic tank, and the perforated pipe aeration device is connected to the aeration apparatus.
5. The wastewater treatment system according to any of claims 1 to 4, wherein a fixed biological filler is further provided in the anoxic tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921564549.8U CN210683344U (en) | 2019-09-19 | 2019-09-19 | Sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921564549.8U CN210683344U (en) | 2019-09-19 | 2019-09-19 | Sewage treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN210683344U true CN210683344U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921564549.8U Active CN210683344U (en) | 2019-09-19 | 2019-09-19 | Sewage treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116239222A (en) * | 2022-12-26 | 2023-06-09 | 南京环保产业创新中心有限公司 | Dephosphorization device with scrape mud effect |
-
2019
- 2019-09-19 CN CN201921564549.8U patent/CN210683344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116239222A (en) * | 2022-12-26 | 2023-06-09 | 南京环保产业创新中心有限公司 | Dephosphorization device with scrape mud effect |
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