CN219526450U - Denitrification processing device for mariculture wastewater - Google Patents
Denitrification processing device for mariculture wastewater Download PDFInfo
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- CN219526450U CN219526450U CN202320897146.5U CN202320897146U CN219526450U CN 219526450 U CN219526450 U CN 219526450U CN 202320897146 U CN202320897146 U CN 202320897146U CN 219526450 U CN219526450 U CN 219526450U
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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 discloses a denitrification treatment device for mariculture wastewater, and aims to solve the problem of poor denitrification efficiency of the existing mariculture wastewater. The denitrification treatment device of the seawater aquaculture wastewater sequentially comprises a sedimentation tank, an anoxic reaction filter tank, an aerobic reaction filter tank, a seawater artificial wetland tank and a drainage tank along the water flow direction, wherein a fiber filler assembly is arranged in the anoxic reaction filter tank, two layers of separation nets are arranged in the aerobic reaction filter tank along the height direction, movable fillers are filled between the two layers of separation nets, an aeration disc is arranged at the bottom of the aerobic reaction filter tank, the seawater artificial wetland tank comprises three filler layers and aquatic plants, the three filler layers sequentially comprise a coral layer, a vermiculite layer and a fine sand layer from bottom to top, and a return pipe is arranged on the aerobic reaction filter tank. According to the utility model, denitrification is carried out through the anoxic reaction filter tank and the aerobic reaction filter tank, and the denitrification is enhanced through the seawater constructed wetland tank, so that an excellent denitrification effect is realized.
Description
Technical Field
The utility model relates to a mariculture wastewater treatment system.
Background
The method is characterized in that the aquaculture is large in China, solid baits are thrown in the mariculture process, a large amount of excrement is generated in the mariculture process, pollutants such as nitrogen and phosphorus are generated by decomposition of residual baits, excretion and the like, the mariculture wastewater has the characteristics of high salinity and salinity fluctuation, the amount of the mariculture wastewater is large and concentrated, and the treatment difficulty of the mariculture wastewater is increased.
The seawater culture tail water treatment technology is mainly divided into three types of physics, chemistry and biology, wherein the chemical treatment technology comprises chemical oxidation, coagulating sedimentation, electrochemistry, ultraviolet radiation technology and the like, the chemical treatment technology has high cost and is easy to cause secondary pollution, and the biological treatment technology mainly absorbs and degrades pollutants in the culture tail water through the growth metabolism of plants, animals and microorganisms, has good removal effect on suspended matters, nitrogen, phosphorus, organic matters and the like produced in the culture process, and is widely applied due to the advantages of ecology, high efficiency, economy and the like.
Disclosure of Invention
The utility model aims to solve the problem of poor denitrification efficiency of the existing mariculture wastewater, and provides a denitrification treatment device for the mariculture wastewater.
The utility model relates to a denitrification treatment device for mariculture wastewater, which comprises a sedimentation tank, an anoxic reaction filter tank, an aerobic reaction filter tank, a seawater artificial wetland tank and a drainage tank, wherein the sedimentation tank, the anoxic reaction filter tank, the aerobic reaction filter tank, the seawater artificial wetland tank and the drainage tank are sequentially arranged along the water flow direction, all the tanks are connected through pipelines, a fiber filler component is arranged in the anoxic reaction filter tank, two layers of separation nets are arranged in the aerobic reaction filter tank along the height direction, movable fillers are filled between the two layers of separation nets, an aeration disc is arranged at the bottom of the aerobic reaction filter tank, and the aeration disc is connected with a blower through an air pipe;
the seawater artificial wetland pool comprises three filler layers and aquatic plants, wherein the three filler layers are a coral layer, a vermiculite layer and a fine sand layer in sequence from bottom to top, and the aquatic plants are planted on the fine sand layer;
the pipeline between sedimentation tank and oxygen deficiency reaction filtering pond is a water pipe, and the pipeline between aerobic reaction filtering pond and the sea water constructed wetland pond is No. three water pipes, and the one end of back flow is linked together with a water pipe, and the other end of back flow is linked together with No. three water pipes.
The utility model relates to a denitrification treatment device for mariculture wastewater, which mainly comprises a sedimentation tank, an anoxic reaction filter tank, an aerobic reaction filter tank, a seawater constructed wetland tank and a drainage tank, wherein the mariculture wastewater flows into the sedimentation tank for static sedimentation treatment, large-particle solid pollutants such as residual baits and excreta are settled and removed, effluent of the sedimentation tank and return water of the aerobic reaction filter tank are mixed and flow into the anoxic reaction filter tank, denitrification is carried out by utilizing a biomembrane on a fiber filler, denitrifying bacteria are more resistant to high salinity, effluent of the anoxic reaction filter tank flows into the aerobic reaction filter tank for nitration reaction, effluent of the aerobic reaction filter tank flows into the seawater constructed wetland tank, aquatic plants in the constructed wetland and microorganisms in a packing layer are used for further strengthening denitrification, the seawater constructed wetland also has a certain dephosphorization effect, TN concentration is reduced after the treatment of the anoxic reaction filter tank and the aerobic reaction filter tank, and finally the effluent of the constructed wetland flows into the drainage tank for adsorption and impurity removal or treatment.
By applying the denitrification treatment device for the mariculture wastewater, the TN removal rate can reach about 92% under the condition that the TN concentration of the inflow water is 6.1-6.8 mg/L, and an excellent denitrification effect is realized.
Drawings
FIG. 1 is a schematic diagram of a denitrification treatment apparatus for mariculture wastewater according to the present utility model;
Detailed Description
The first embodiment is as follows: the denitrification treatment device for the mariculture wastewater comprises a sedimentation tank 1, an anoxic reaction filter tank 2, an aerobic reaction filter tank 4, a seawater artificial wetland tank 9 and a drainage tank 15, wherein the sedimentation tank 1, the anoxic reaction filter tank 2, the aerobic reaction filter tank 4, the seawater artificial wetland tank 9 and the drainage tank 15 are sequentially arranged along the water flow direction, all the tanks are connected through pipelines, a fiber filler assembly 3 is arranged in the anoxic reaction filter tank 2, two layers of separation nets 5 are arranged in the aerobic reaction filter tank 4 along the height direction, movable fillers 6 are filled between the two layers of separation nets 5, an aeration disc 7 is arranged at the bottom of the aerobic reaction filter tank 4, and the aeration disc 7 is connected with a blower 8 through an air pipe;
the seawater artificial wetland pool 9 comprises three filler layers and an aquatic plant 14, wherein the three filler layers sequentially comprise a coral stone layer 11, a vermiculite layer 12 and a fine sand layer 13 from bottom to top, and the aquatic plant 14 is planted on the fine sand layer 13;
the pipeline between sedimentation tank 1 and oxygen deficiency reaction filtering pond 2 is a water pipe, and the pipeline between aerobic reaction filtering pond 4 and sea water constructed wetland pond 9 is No. three water pipes, and the one end of back flow 10 is linked together with a water pipe, and the other end of back flow 10 is linked together with No. three water pipes.
The second embodiment is as follows: this embodiment differs from the first embodiment in that a peristaltic pump 16 is provided on the first water line.
And a third specific embodiment: this embodiment differs from the first or second embodiment in that a valve is provided in the return pipe 10.
The specific embodiment IV is as follows: the present embodiment differs from the first to third embodiments in that the coral layer 11 has a thickness of 35 to 45cm, the vermiculite layer 12 has a thickness of 20 to 25cm, and the fine sand layer 13 has a thickness of 10 to 15cm.
Fifth embodiment: the present embodiment differs from the first to fourth embodiments in that an activated carbon filler is provided in the drainage tank 15.
Specific embodiment six: the fifth embodiment is different from the fifth embodiment in that an ultraviolet sterilizing lamp is provided in the drain tank 15.
Examples: the denitrification treatment device for the mariculture wastewater comprises a sedimentation tank 1, an anoxic reaction filter tank 2, an aerobic reaction filter tank 4, a seawater artificial wetland tank 9 and a drainage tank 15, wherein the sedimentation tank 1, the anoxic reaction filter tank 2, the aerobic reaction filter tank 4, the seawater artificial wetland tank 9 and the drainage tank 15 are sequentially arranged along the water flow direction, all the tanks are connected through pipelines, a fiber filler assembly 3 is arranged in the anoxic reaction filter tank 2, two layers of separation nets 5 are arranged in the aerobic reaction filter tank 4 along the height direction, movable fillers 6 are filled between the two layers of separation nets 5, an aeration disc 7 is arranged at the bottom of the aerobic reaction filter tank 4, and the aeration disc 7 is connected with a blower 8 through an air pipe;
the seawater artificial wetland pool 9 comprises three filler layers and an aquatic plant 14, wherein the three filler layers sequentially comprise a coral stone layer 11, a vermiculite layer 12 and a fine sand layer 13 from bottom to top, the thickness of the coral stone layer 11 is 35cm, the thickness of the vermiculite layer 12 is 25cm, the thickness of the fine sand layer 13 is 10cm, the aquatic plant 14 is planted on the fine sand layer 13, and the aquatic plant 14 is spartina alterniflora;
the pipeline between the sedimentation tank 1 and the anoxic reaction filter tank 2 is a first water pipe, a peristaltic pump 16 is arranged on the first water pipe, the pipeline between the aerobic reaction filter tank 4 and the seawater constructed wetland tank 9 is a third water pipe, one end of a return pipe 10 is communicated with the first water pipe, and the other end of the return pipe 10 is communicated with the third water pipe; an ultraviolet sterilizing lamp is arranged in the drainage tank 15.
The denitrification treatment device for the mariculture wastewater of the embodiment has the treatment process as follows:
the mariculture wastewater firstly flows into a sedimentation tank 1 for static sedimentation treatment for 1h, the effluent of the sedimentation tank 1 and the return water of an aerobic reaction filter tank 4 are mixed and flow into an anoxic reaction filter tank 2 for denitrification and denitrification, the hydraulic retention time of the anoxic reaction filter tank 2 is controlled to be 12h, the effluent of the anoxic reaction filter tank 2 flows into the aerobic reaction filter tank 4 for nitrification reaction, the hydraulic retention time of the aerobic reaction filter tank 4 is controlled to be 10h, the effluent of the aerobic reaction filter tank 4 flows into a seawater constructed wetland tank 9 for enhanced denitrification, the hydraulic retention time of the seawater constructed wetland tank 9 is controlled to be 4h, and the effluent of the seawater constructed wetland tank flows into a drainage tank 15 for disinfection.
When the TN concentration of the mariculture wastewater is 6.1-6.8 mg/L and the TP concentration is 0.8-1.0 mg/L, the TN concentration of the effluent of the drainage tank 15 is 0.4-0.5 mg/L and the TP concentration is 0.08-0.12 mg/L.
Claims (6)
1. The denitrification treatment device for the mariculture wastewater is characterized by comprising a sedimentation tank (1), an anoxic reaction filter tank (2), an aerobic reaction filter tank (4), a seawater artificial wetland tank (9) and a drainage tank (15), wherein the sedimentation tank (1), the anoxic reaction filter tank (2), the aerobic reaction filter tank (4), the seawater artificial wetland tank (9) and the drainage tank (15) are sequentially arranged along the water flow direction, all the tank bodies are connected through pipelines, a fiber filler component (3) is arranged in the anoxic reaction filter tank (2), two layers of separation nets (5) are arranged in the aerobic reaction filter tank (4) along the height direction, movable fillers (6) are filled between the two layers of separation nets (5), an aeration disc (7) is arranged at the bottom of the aerobic reaction filter tank (4), and the aeration disc (7) is connected with a blower (8) through an air pipe;
the seawater artificial wetland pool (9) comprises three filler layers and aquatic plants (14), wherein the three filler layers are a coral stone layer (11), a vermiculite layer (12) and a fine sand layer (13) in sequence from bottom to top, and the aquatic plants (14) are planted on the fine sand layer (13);
the pipeline between sedimentation tank (1) and oxygen deficiency reaction filtering pond (2) is a water pipe, and the pipeline between aerobic reaction filtering pond (4) and sea water constructed wetland pond (9) is No. three water pipes, and the one end of back flow (10) is linked together with a water pipe, and the other end of back flow (10) is linked together with No. three water pipes.
2. The denitrification treatment apparatus for mariculture wastewater according to claim 1, wherein a peristaltic pump (16) is provided on the first water pipe.
3. The denitrification treatment apparatus of the mariculture wastewater according to claim 1, wherein a valve is provided on the return pipe (10).
4. The denitrification treatment apparatus for mariculture wastewater according to claim 1, wherein the coral layer (11) has a thickness of 35-45 cm, the vermiculite layer (12) has a thickness of 20-25 cm, and the fine sand layer (13) has a thickness of 10-15 cm.
5. The denitrification treatment apparatus of mariculture wastewater according to claim 1, wherein activated carbon filler is provided in the drainage tank (15).
6. The denitrification treatment apparatus for mariculture wastewater according to claim 1, wherein an ultraviolet disinfection lamp is provided in the drainage tank (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320897146.5U CN219526450U (en) | 2023-04-20 | 2023-04-20 | Denitrification processing device for mariculture wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320897146.5U CN219526450U (en) | 2023-04-20 | 2023-04-20 | Denitrification processing device for mariculture wastewater |
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| Publication Number | Publication Date |
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| CN219526450U true CN219526450U (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320897146.5U Active CN219526450U (en) | 2023-04-20 | 2023-04-20 | Denitrification processing device for mariculture wastewater |
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| CN (1) | CN219526450U (en) |
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2023
- 2023-04-20 CN CN202320897146.5U patent/CN219526450U/en active Active
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