CN211255429U - Experimental device for heterotrophic and sulfur autotrophic combined biological denitrification - Google Patents
Experimental device for heterotrophic and sulfur autotrophic combined biological denitrification Download PDFInfo
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Abstract
The utility model discloses an experimental device for heterotrophic and sulfur autotrophic combined biological denitrification, which comprises a raw water pool, an anoxic heterotrophic denitrification pool, an aerobic nitrification pool, a sedimentation pool, a sulfur autotrophic denitrification pool and a landscape pool; a stirrer is arranged in the anoxic heterotrophic denitrification tank; the input end of the aerobic nitrification tank is communicated with the output end of the anoxic heterotrophic denitrification tank; the input end of the sedimentation tank is communicated with the output end of the aerobic nitrification tank; the input end of the sulfur autotrophic nitrogen removal denitrification tank is communicated with the liquid outlet end of the sedimentation tank; the input end of the landscape pool is communicated with the output end of the sulfur autotrophic nitrogen removal denitrification pool. The raw water pool, the anoxic heterotrophic denitrification pool, the aerobic nitrification pool, the sedimentation pool, the sulfur autotrophic nitrogen removal denitrification pool and the landscape pool are cooperatively arranged, so that the heterotrophic and sulfur autotrophic combined biological nitrogen removal effect can be visually displayed, the operation is simple, a deep nitrogen removal treatment model is established, a new method is developed for removing total nitrogen, and the research, display and teaching of biological nitrogen removal are facilitated.
Description
Technical Field
The utility model relates to a waste water treatment field technique especially indicates an experimental apparatus of heterotrophic and sulfur autotrophic combined biological denitrification.
Background
Biological denitrification refers to a process of converting organic nitrogen and ammonia nitrogen in wastewater into nitrogen gas through ammoniation, nitration reaction and denitrification reaction under the combined action of microorganisms. The method has the characteristics of economy, effectiveness, easy operation, no secondary pollution and the like, is recognized as a method with a development prospect, and has continuously reported new achievements on the technical research of the aspect.
In the research, display and teaching of biological denitrification of wastewater, an experimental device capable of visually displaying the effect is needed, however, the experimental device is not available at present. Therefore, there is a need to develop a solution to the above problems.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an experimental apparatus for denitrification by heterotrophic and sulfur autotrophic organisms, which can visually display the denitrification effect of the organisms.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an experimental facility for biological denitrification combining heterotrophic culture and sulfur autotrophic culture comprises a raw water pool, an anoxic heterotrophic denitrification pool, an aerobic nitrification pool, a sedimentation pool, a sulfur autotrophic denitrification pool and a landscape pool; the anoxic heterotrophic denitrification tank is internally provided with a stirrer, and the input end of the anoxic heterotrophic denitrification tank is communicated with the output end of the raw water tank; the input end of the aerobic nitrification tank is communicated with the output end of the anoxic heterotrophic denitrification tank; the input end of the sedimentation tank is communicated with the output end of the aerobic nitrification tank; the input end of the sulfur autotrophic nitrogen removal denitrification tank is communicated with the liquid outlet end of the sedimentation tank; the input end of the landscape pool is communicated with the output end of the sulfur autotrophic nitrogen removal denitrification pool.
Preferably, the input end of the anoxic heterotrophic denitrification tank is communicated with the output end of the raw water tank through a peristaltic pump.
Preferably, the aerobic nitrification tanks are three communicated in sequence.
Preferably, the sedimentation tank is an inclined plate sedimentation tank, and an overflow weir is arranged in the sedimentation tank.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:
the raw water pool, the anoxic heterotrophic denitrification pool, the aerobic nitrification pool, the sedimentation pool, the sulfur autotrophic nitrogen removal denitrification pool and the landscape pool are cooperatively arranged, so that the heterotrophic and sulfur autotrophic combined biological nitrogen removal effect can be visually displayed, the operation is simple, a deep nitrogen removal treatment model is established, a new method is developed for removing total nitrogen, and the research, display and teaching of biological nitrogen removal are facilitated.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
The attached drawings indicate the following:
10. 20 parts of raw water pool and anoxic heterotrophic denitrification pool
30. Aerobic nitrification tank 40 and sedimentation tank
41. Overflow weir 50, sulfur autotrophic nitrogen removal denitrification pool
60. Landscape pool 61 and electric control system
71. Stirrer 72, peristaltic pump
Detailed Description
Referring to fig. 1, there is shown a detailed structure of a preferred embodiment of the present invention, which includes a raw water tank 10, an anoxic heterotrophic denitrification tank 20, an aerobic nitrification tank 30, a sedimentation tank 40, a sulfur autotrophic denitrification tank 50, and a landscape tank 60.
The anoxic heterotrophic denitrification tank 20 is internally provided with a stirrer 71, and the input end of the anoxic heterotrophic denitrification tank 20 is communicated with the output end of the raw water tank 10; in the present embodiment, the input end of the anoxic heterotrophic denitrification tank 20 is communicated with the output end of the raw water tank 10 through a peristaltic pump 72.
The input end of the aerobic nitrification tank 30 is communicated with the output end of the anoxic heterotrophic denitrification tank 20; in this embodiment, the aerobic nitrification tanks 30 are three in serial communication.
The input end of the sedimentation tank 40 is communicated with the output end of the aerobic nitrification tank 30; in this embodiment, the sedimentation tank 40 is an inclined plate sedimentation tank, and an overflow weir 41 is disposed in the sedimentation tank 40.
The input end of the sulfur autotrophic nitrogen removal denitrification tank 50 is communicated with the liquid outlet end of the sedimentation tank 40; the input end of the landscape pool 60 is communicated with the output end of the sulfur autotrophic nitrogen removal denitrification pool 50, and an electric control system 61 is arranged beside the landscape pool 60 and used for operating and controlling a water pump and adjusting the water inlet flow and the reflux quantity.
Detailed description the working principle of the present embodiment is as follows:
raw water is stored in a raw water pool 10, is lifted into an anoxic heterotrophic denitrification pool 20 through a peristaltic pump 72, PVA filler with the pool capacity of 20% is added, then the water automatically flows into an aerobic nitrification pool 30, 20% of PVA vulcanized filler is simultaneously added into the aerobic nitrification pool 30, ammonia nitrogen is converted into nitrate nitrogen through nitrification in three aerobic nitrification pools 30, nitrified liquid flows back to the anoxic heterotrophic denitrification pool 20 from the bottom of a third aerobic nitrification pool 30 through the peristaltic pump to perform heterotrophic denitrification reaction, one side of the bottom of water outlet of the third anoxic heterotrophic denitrification pool 20 flows into a sedimentation pool 40, the nitrified liquid flows into a sulfur autotrophic denitrification pool 50 from the top through the sedimentation pool 40, and wastewater reaching the total nitrogen of autotrophic denitrification again flows into a landscape pool 60 through the nitrate nitrogen which does not reach the standard of heterotrophic metabolism.
The PVA biological filler is a novel microorganism curing embedding carrier, and has the characteristics of high strength, microbial decomposition resistance, excellent biocompatibility, no toxicity to microorganisms and the like. According to the gradient relation of dissolved oxygen, the PVA filler forms aerobic environment, anoxic environment and anaerobic environment in the middle layer on the outer layer to form multiple flora microorganisms, and the PVA filler plays a role in denitrification. The total nitrogen of the aerobic effluent with lower BOD is difficult to reach the standard by the traditional heterotrophic method, and the sulfur autotrophic denitrification biological filter is added at the tail end, so that the deep denitrification can be realized by adopting an autotrophic denitrification mode without a carbon source. Modified sulfur materials (S simple substance, calcium carbonate and ferric sulfide) added in the sulfur autotrophic nitrogen removal filter tank are necessary nutrient sources for thiobacillus denitrificans, the thiobacillus denitrificans is inoculated and domesticated by adopting excess sludge, nitrate nitrogen is used as an electron acceptor, and a carrier nutrient source is used as an electron donor, so that the nitrate nitrogen is converted into nitrogen for deep nitrogen removal. Because the carrier also contains Fe \ Ca, the iron phosphate and the calcium phosphate can be formed to play a role in assisting in dephosphorization. The experimental device is integrated, simple to operate and attractive and elegant, a deep denitrification treatment model is established, and a new method is developed for removing total nitrogen.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (4)
1. An experimental device for the heterotrophic and sulfur autotrophic combined biological denitrification is characterized in that: comprises a raw water pool, an anoxic heterotrophic denitrification pool, an aerobic nitrification pool, a sedimentation pool, a sulfur autotrophic nitrogen removal denitrification pool and a landscape pool; the anoxic heterotrophic denitrification tank is internally provided with a stirrer, and the input end of the anoxic heterotrophic denitrification tank is communicated with the output end of the raw water tank; the input end of the aerobic nitrification tank is communicated with the output end of the anoxic heterotrophic denitrification tank; the input end of the sedimentation tank is communicated with the output end of the aerobic nitrification tank; the input end of the sulfur autotrophic nitrogen removal denitrification tank is communicated with the liquid outlet end of the sedimentation tank; the input end of the landscape pool is communicated with the output end of the sulfur autotrophic nitrogen removal denitrification pool.
2. The experimental facility for denitrification of heterotrophic and sulfur-autotrophic organisms according to claim 1, wherein: the input end of the anoxic heterotrophic denitrification tank is communicated with the output end of the raw water tank through a peristaltic pump.
3. The experimental facility for denitrification of heterotrophic and sulfur-autotrophic organisms according to claim 1, wherein: the aerobic nitrification tanks are three communicated in sequence.
4. The experimental facility for denitrification of heterotrophic and sulfur-autotrophic organisms according to claim 1, wherein: the sedimentation tank is an inclined plate sedimentation tank, and an overflow weir is arranged in the sedimentation tank.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113754193A (en) * | 2021-09-16 | 2021-12-07 | 华夏碧水环保科技有限公司 | Modular microbial carrier solidification MBR autotrophic denitrification reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113754193A (en) * | 2021-09-16 | 2021-12-07 | 华夏碧水环保科技有限公司 | Modular microbial carrier solidification MBR autotrophic denitrification reactor |
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