CN-224212503-U - Vibration bed sulfur autotrophic denitrification bioreactor

CN224212503UCN 224212503 UCN224212503 UCN 224212503UCN-224212503-U

Abstract

The utility model belongs to the technical field of sewage treatment and discloses a vibrating bed sulfur autotrophic denitrification bioreactor which comprises a reactor shell and a filler support, wherein the bottom of the reactor shell is communicated with a water inlet pipe, the upper end of the reactor shell is communicated with a water outlet pipe, the top of the reactor shell is fixedly provided with a top cover through bolts, the filler support is arranged in the reactor shell, the side surface of the lower end of the filler support is fixedly connected with a sulfur-based fiber carrier, a first assembly hole is formed in the top cover, the upper end of the filler support extends out of the reactor shell from the first assembly hole, and the upper end of the filler support is provided with a vibrating mechanism capable of driving the sulfur-based fiber carrier on the filler support to vibrate.

Inventors

ZHANG YUNXIANG
CHANG MINGDONG

Assignees

广东生态工程职业学院

Dates

Publication Date: 20260508
Application Date: 20250312

Claims (4)

1. The utility model provides a vibration bed sulfur autotrophic denitrification bioreactor which is characterized in that, including reactor casing (1) and filler support (2), the bottom intercommunication of reactor casing (1) has inlet tube (101), the upper end intercommunication of reactor casing (1) has outlet pipe (102), top through bolt fixed mounting top cap (103) of reactor casing (1), filler support (2) set up the inside of reactor casing (1), the lower extreme side fixedly connected with sulfur-based fiber carrier (3) of filler support (2), first pilot hole (1031) have been seted up on top cap (103), the upper end of filler support (2) stretches out to the outside of reactor casing (1) from first pilot hole (1031), the upper end of filler support (2) is provided with can drive vibration mechanism of sulfur-based fiber carrier (3) vibration on filler support (2); The vibrating mechanism comprises a mounting seat (5), the mounting seat (5) is detachably arranged at the upper end of the filler support (2), a motor seat (401) is fixedly arranged at the top of the mounting seat (5), a vibrating motor (4) is fixedly arranged on the motor seat (401), and a rubber shock pad (6) is fixedly arranged between the bottom of the mounting seat (5) and the top of the top cover (103).
2. The sulfur autotrophic denitrification bioreactor of a vibrating bed according to claim 1, wherein an elastic sealing ring (1032) is fixedly arranged in the first assembly hole (1031), and the elastic sealing ring (1032) is sleeved on the filler bracket (2) in a sliding manner.
3. The sulfur autotrophic denitrification bioreactor of the vibrating bed is characterized by further comprising an assembly bolt (504), wherein a second assembly hole (501) is formed in the top of the mounting seat (5), the mounting seat (5) is sleeved on the filler support (2) through the second assembly hole (501), a threaded hole (201) is formed in the upper end of the filler support (2), a connecting block (502) is fixedly connected to the top of the second assembly hole (501), a third assembly hole (503) is formed in the connecting block (502), and one end of the assembly bolt (504) penetrates through the connecting block (502) and is fixedly connected to the threaded hole (201) through threads.
4. A vibrating bed sulfur autotrophic denitrification bioreactor according to claims 1-3, wherein the lower end of the reactor shell (1) is fixedly provided with supporting legs (104).

Description

Vibration bed sulfur autotrophic denitrification bioreactor Technical Field The utility model relates to the technical field of sewage treatment, in particular to a vibrating bed sulfur autotrophic denitrification bioreactor. Background For urban sewage treatment plants, nitrogen compounds are the most common pollutants, and enrichment of the nitrogen compounds can lead to eutrophication of water bodies, so that a series of problems such as hypoxia, turbidity increase and malodor emission of the water bodies are caused, and the quality of water environments and the ecological safety of water bodies are seriously influenced. Therefore, the efficient removal of nitrogen pollutants is realized, and the guarantee of the safety of water used by residents is an important mission of urban sewage treatment plants. The biological method based on nitrification-denitrification is the most commonly used denitrification process of the sewage treatment plant at present, wherein the working principle of the denitrification section is that denitrifying bacteria reduce nitrate into nitrogen under an anoxic environment, and the reaction takes an organic carbon source as an electron donor. Therefore, in order to achieve efficient removal of nitrogen pollutants, a sewage treatment plant generally adopts an additional organic carbon source supplementing manner to obtain higher denitrification efficiency, but adopts the additional organic carbon source supplementing manner to increase the cost of the agent in the operation process, and is unfavorable for the operation of the sewage treatment plant in the long term. For the above reasons, sulfur autotrophic denitrification processes have received a great deal of attention because of their high denitrification efficiency and the lack of additional supplementation of organic carbon sources. The denitrification principle of sulfur autotrophic denitrification is that the sulfur autotrophic denitrifying bacteria takes elemental sulfur or other reduced sulfides as electron donors to reduce nitrate into nitrogen. Because of the low cost, easy availability and low toxicity of elemental sulfur, current sulfur autotrophic denitrification processes mainly use elemental sulfur particles as a filler to provide a sulfur source required for the reaction, and build a reactor in the form of a fixed bed by stacking the filler particles in a vessel. In addition, some sulfur-based composite fillers have been developed in recent years, for example, limestone powder, iron powder, wood dust powder and the like are mixed in a certain proportion into raw materials for preparing the particle fillers, so that the problems of low efficiency, acid and alkali production and the like of the elemental sulfur type autotrophic denitrification are solved, and the engineering application of the sulfur autotrophic denitrification technology is gradually realized. The fixed bed sulfur autotrophic denitrification bioreactor has the defects that in the operation process of the reactor, solid granular fillers are always in a static state, and along with the continuous operation of the reactor, microorganisms on the surfaces of the fillers continuously propagate and accumulate, so that gaps among the fillers become smaller gradually, and finally, hardening is formed and the reactor is blocked. In addition, nitrogen generated in the denitrification process can be accumulated in gaps among the fillers due to blockage, so that contact between sewage and microorganisms is affected, mass transfer efficiency is reduced, and the reactor cannot operate stably and efficiently. At present, the method for solving the problem of blockage of the sulfur autotrophic denitrification fixed bed reactor is back flushing, but the back flushing process has some negative effects on the reactor, including: (1) The back flushing inevitably washes out the biomembrane structure on the surface of the filling material in the process of solving the blockage problem, thereby reducing the biomass in the reactor; (2) A large amount of oxygen is introduced in the back flushing process, so that anaerobic environment required in the denitrification process is destroyed, and the denitrification efficiency is reduced; (3) In the back flushing process, water flow or air flow can preferentially pass through the channels with smaller resistance in the packing layer, so that a channeling phenomenon occurs, and the blocking problem of the reactor cannot be thoroughly solved. For this purpose, we propose a vibrating bed sulfur autotrophic denitrification bioreactor. Disclosure of utility model It is an object of the present utility model to provide a vibrating bed sulfur autotrophic denitrification bioreactor that solves or at least alleviates one or more of the above-identified problems and other problems of the prior art. In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps: The utility mode