Efficient sulfur autotrophic composite biological reaction denitrification device

Abstract

The utility model relates to the technical field of denitrification devices, and provides an efficient sulfur autotrophic composite biological reaction denitrification device which comprises a device body, the device body comprises a heterotrophic denitrification area, an autotrophic denitrification area and a clear water area, and the heterotrophic denitrification area, the autotrophic denitrification area and the clear water area jointly form a concentric circle; the heterotrophic nitrogen removal area is a left semicircular ring of a concentric circle, the clear water area is a right semicircular ring of the concentric circle, and the autotrophic nitrogen removal area is an inner circle of the concentric circle; the heterotrophic nitrogen removal area, the autotrophic nitrogen removal area and the clear water area jointly form a concentric circle, the effective area is fully utilized, dices are saved, the structure is compact, and the operation efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to denitrification device technical field especially relates to a kind of high-efficiency sulfur autotrophic composite biological reaction denitrification device. BACKGROUND

[0002] The main forms of nitrogen in water include total nitrogen (TN), organic nitrogen and inorganic nitrogen. Total nitrogen is the total amount of all nitrogen compounds in water, including organic nitrogen and inorganic nitrogen. Organic nitrogen mainly exists in the form of urea, protein, amino acid, etc., while inorganic nitrogen includes ammonia nitrogen, nitrate nitrogen and nitrite nitrogen. The content and management of nitrogen in water have important implications for the environment and health.

[0003] Excessive accumulation of ammonia nitrogen and nitrite can lead to water deterioration, breeding of a large number of pathogenic bacteria, and affecting the healthy growth of aquatic animals. Therefore, reasonable management of nitrogen content in water and maintaining appropriate carbon-nitrogen ratio are of great significance for maintaining the self-purification ability and ecological balance of water bodies.

[0004] In existing water treatment processes, the most commonly used is the combination of anoxic and aerobic processes for denitrification. Biological denitrification is a process in which microorganisms convert nitrogen-containing compounds into nitrogen gas through metabolic action. This process mainly includes three stages:

[0005] ‌Ammonification reaction: the process of microbial decomposition of organic nitrogen compounds to produce ammonia.

[0006] ‌Nitrification reaction: under the action of nitrosation bacteria and nitrification bacteria, ammonia nitrogen is converted into nitrite and nitrate.

[0007] ‌Denitrification reaction: under anoxic conditions, nitrate and nitrite are reduced to nitrogen gas by denitrifying bacteria. Existing denitrification equipment uses separate intervals for heterotrophic and autotrophic denitrification, occupying a large area and affecting operational efficiency.

[0008] Therefore, in the present utility model patent application, the applicant has carefully studied a kind of high-efficiency sulfur autotrophic composite biological reaction denitrification device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0009] The utility model mainly aims at providing a kind of high-efficiency sulfur autotrophic composite biological reaction denitrification device, which comprises a concentric circle of heterotrophic denitrification zone, autotrophic denitrification zone and clear water zone, fully utilizes effective area, saves dice, compact structure, and high operational efficiency.

[0010] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0011] The utility model provides a kind of high-efficiency sulfur autotrophic composite biological reaction nitrogen removal device, including device body, the device body includes heterotrophic denitrification area, autotrophic denitrification area and clear water area, and heterotrophic denitrification area, autotrophic denitrification area and clear water area three jointly constitute a concentric circle;

[0012] The heterotrophic denitrification area is the left half circular ring of concentric circle, the clear water area is the right half circular ring of concentric circle, and the autotrophic denitrification area is the inner circle of concentric circle;

[0013] A semicircular overflow channel is arranged in the upper section of the heterotrophic denitrification area, and the heterotrophic denitrification area is sequentially provided with a heterotrophic filler layer, a supporting layer and a filter plate from top to bottom, the semicircular overflow channel is located above the heterotrophic filler layer, and a water collecting channel is arranged in the heterotrophic denitrification area, which is connected to the autotrophic denitrification area and located below the filter plate.

[0014] The autotrophic denitrification area is provided with a sulfidation filler layer and an annular overflow channel, the annular overflow channel is located above the sulfidation filler layer, the annular overflow channel is connected to the clear water area, the water collecting channel is located below the sulfidation filler layer, and the part of the annular overflow channel connected to the clear water area is located in the upper section of the clear water area.

[0015] As a preferred solution, the water collecting channel is located at the bottom of both the heterotrophic denitrification area and the autotrophic denitrification area.

[0016] The utility model has obvious advantages and beneficial effects compared with the prior art, specifically: it mainly comprises a heterotrophic denitrification area, an autotrophic denitrification area and a clear water area, which jointly constitute a concentric circle, fully utilize the effective area, save dice, and have compact structure and high operation efficiency.

[0017] To more clearly illustrate the structural features and effects of the utility model, specific embodiments will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the first top view of the embodiment of the utility model;

[0019] Fig. 2 It is the second top view of the embodiment of the utility model (mainly showing the heterotrophic filler layer and the autotrophic denitrification area);

[0020] Fig. 3 It is the front view of the embodiment of the utility model.

[0021] REFERENCE SIGNS:

[0022] 10, heterotrophic denitrification area

[0023] 11, heterotrophic filler layer 12, supporting layer

[0024] 13, filter plate 14, semicircular overflow channel

[0025] 15. a water collection channel

[0026] 20. autotrophic denitrification zone

[0027] 21. sulfurized filler layer 22, annular overflow channel

[0028] 30. clear water zone. DETAILED DESCRIPTION

[0029] The utility model will be further described below in combination with the drawings and specific embodiments.

[0030] As Figs. 1 to 3 shown, a high-efficiency sulfur autotrophic composite biological reaction denitrification device includes a device body, the device body includes a heterotrophic denitrification zone 10, an autotrophic denitrification zone 20 and a clear water zone 30, the three of heterotrophic denitrification zone 10, autotrophic denitrification zone 20 and clear water zone 30 constitute a concentric circle together.

[0031] The heterotrophic denitrification zone 10 is the left half circular ring of concentric circle, the heterotrophic denitrification zone 10 is sequentially provided with heterotrophic filler layer 11, supporting layer 12 and filter plate 13 from top to bottom, the heterotrophic filler layer 11 is filled with heterotrophic denitrification filter material, the supporting layer 12 is used for supporting heterotrophic denitrification filter material, the aperture of filter plate 13 is less than the filter diameter of heterotrophic denitrification filter material, and the circumferential side of filter plate 13 is fixedly connected with the inner wall of heterotrophic denitrification zone 10, which can play a supporting role.

[0032] The heterotrophic denitrification filter material is the mixture of slow-release carbon source and homogeneous quartz sand, and the slow-release carbon source is any one or several of sawdust, sawdust, straw, rice bran and rice husk.

[0033] The heterotrophic denitrification in the heterotrophic denitrification zone is that denitrifying bacteria use organic carbon source as energy and electron donor to denitrify nitrate into nitrogen. This process does not need to add additional organic carbon source, and the slow-release carbon source can continuously release organic carbon to provide energy for denitrifying bacteria.

[0034] The heterotrophic denitrification zone 10 is provided with a semi-annular overflow channel 14 in the upper section, the semi-annular overflow channel 14 is located above the heterotrophic filler layer 11, the heterotrophic denitrification zone 10 is provided with a water collection channel 15, the water collection channel 15 is connected with the autotrophic denitrification zone 20 and the clear water zone 30 respectively, and the water collection channel 15 is located below the filter plate 13.

[0035] The clear water zone 30 is the right half circular ring of concentric circle, and the autotrophic denitrification zone 20 is the inner circle of concentric circle.

[0036] The autotrophic denitrification area 20 is provided with a sulfidation filler layer 21 and an annular overflow channel 22, and in the embodiment, the sulfidation filler layer 21 is filled with sulfidation denitrification filter material.

[0037] The annular overflow channel 22 is located above the sulfidation filler layer 21, and the annular overflow channel 22 is communicated with the clear water area 30, and the part of the annular overflow channel 22 communicated with the clear water area 30 is located in the upper section of the clear water area 30.

[0038] The water collecting channel 15 is located below the sulfidation filler layer 21, and the water collecting channel 15 is located at the bottom of both the heterotrophic denitrification area 10 and the autotrophic denitrification area 20.

[0039] Next, the principle is described as follows:

[0040] The sewage enters the heterotrophic denitrification area 10 through the semi-annular overflow channel 14, and by using the water gravity, the sewage sequentially passes through the heterotrophic filler layer 11, the supporting layer 12 and the filter plate 13 to obtain the first-stage denitrification effluent, the first-stage denitrification effluent enters the autotrophic denitrification area 20 through the water collecting channel 15, and then, the first-stage denitrification effluent slowly rises in the autotrophic denitrification area 20, and is denitrified again under the action of the sulfidation filler layer 21 to obtain the second-stage denitrification effluent and flow upward into the annular overflow channel 22, and then overflow into the clear water area 30.

[0041] The design points of the utility model mainly are that the heterotrophic denitrification area, the autotrophic denitrification area and the clear water area jointly constitute a concentric circle, the effective area is fully utilized, the dice is saved, the structure is compact, and the operation efficiency is high.

[0042] The above description is only the preferred embodiment of the utility model, and does not limit the technical range of the utility model, so any slight modification, equivalent change and modification according to the technical essence of the utility model are still within the technical range of the utility model.

Claims

1. A high-efficiency sulfur autotrophic composite biological reaction denitrification device, characterized in that: The device includes a main body, which comprises a heterotrophic denitrification zone, an autotrophic denitrification zone, and a clear water zone. The heterotrophic denitrification zone, the autotrophic denitrification zone, and the clear water zone together form a concentric circle. The heterotrophic denitrification zone is the left semicircle of the concentric circles, the clear water zone is the right semicircle of the concentric circles, and the autotrophic denitrification zone is the inner circle of the concentric circles. The upper section of the heterotrophic denitrification zone is provided with a semi-circular overflow channel. The heterotrophic denitrification zone is provided with a heterotrophic packing layer, a support layer and a filter plate in sequence from top to bottom. The semi-circular overflow channel is located above the heterotrophic packing layer. The heterotrophic denitrification zone is provided with a water collection channel, which is connected to the autotrophic denitrification zone and is located below the filter plate. The autotrophic denitrification zone is equipped with a sulfurized packing layer and an annular overflow channel. The annular overflow channel is located above the sulfurized packing layer and connects to the clear water zone. The water collection channel is located below the sulfurized packing layer, and the portion of the annular overflow channel connecting to the clear water zone is located in the upper section of the clear water zone.

2. The high-efficiency sulfur autotrophic composite biological reaction denitrification device according to claim 1, characterized in that: The water collection channel is located at the bottom of both the heterotrophic denitrification zone and the autotrophic denitrification zone.

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