CN218579750U

CN218579750U - Autotrophic nitrogen removal device applied to domestic sewage

Info

Publication number: CN218579750U
Application number: CN202222591509.0U
Authority: CN
Inventors: 胡皓; 张红; 张晨
Original assignee: Anhui Cecep Guozhen Intelligent Equipment Co ltd
Current assignee: Anhui Cecep Guozhen Intelligent Equipment Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-03-07
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a be applied to domestic sewage's autotrophic denitrification device belongs to domestic sewage treatment field, including filter unit and back flush unit, filter unit top lateral wall and inlet channel intercommunication, inside from the top down of filter unit is equipped with autotrophic filter material, filter material supporting layer, filter plate filter head in proper order, autotrophic filter material sets up in the inlet channel below, filter unit and back flush unit contact setting, filter unit bottom one side and back flush fan are connected, and filter unit bottom opposite side is through back flush water pump and back flush unit connection, and back flush unit lateral wall is equipped with outlet conduit. The utility model discloses conveniently carry out filtration treatment with domestic sewage, the convenience is washd autotrophy type filter material, filter material supporting layer, filter plate filter head, the recoil washing, guarantees the security of device, reduces the maintenance to it, and the working costs is low, does benefit to save time, reduces use cost.

Description

Autotrophic nitrogen removal device applied to domestic sewage

Technical Field

The utility model relates to a domestic sewage administers the field, specifically is a be applied to domestic sewage's autotrophic denitrification device.

Background

Domestic sewage is wastewater discharged in daily life of residents and mainly comes from residential buildings and public buildings, such as houses, institutions, schools, hospitals, shops, public places, industrial enterprises and toilets. The pollutants contained in the domestic sewage are mainly organic matters and a large number of pathogenic microorganisms. Organic matters existing in domestic sewage are extremely unstable and easily decomposed to generate offensive odor. Bacteria and pathogens propagate in large quantities by taking organic matters in domestic sewage as nutrition, and can cause epidemic of infectious diseases. Therefore, domestic sewage must be treated before it is discharged. The organic matters have the common characteristic that the matters are directly decomposed into simple inorganic matters of carbon dioxide and water through the biochemical action of microorganisms after entering a water body, dissolved oxygen in the water is consumed in the decomposition process, pollutants are decomposed under the anoxic condition, and the water quality is deteriorated, and the organic matters are usually called as aerobic organic matters. The more aerobic organic matters in the water body, the more oxygen consumption and the poorer water quality, which indicates that the water body is more seriously polluted. Eutrophication pollution is a water quality pollution phenomenon caused by excessive content of plant nutrient substances such as nitrogen, phosphorus and the like. Eutrophication of aquatic ecosystems can occur through chemical pollutants in two ways: one is by limiting the increase in the amount of inorganic nutrients of the plant under normal conditions; the other is by the addition of organic matter as a decomposer. The conventional domestic sewage denitrification mainly adopts heterotrophic denitrification biological denitrification, which is a process that denitrifying bacteria use organic matters as carbon sources and electron donors to provide energy so that nitrate and nitrite are reduced into nitrogen.

Heterotrophic denitrification biological denitrification has certain limitations in practical engineering applications, and is a process in which heterotrophic microorganisms reduce nitrate into nitrogen through biological reduction by taking an organic carbon source as an electron donor and nitrate as an electron acceptor. Therefore, the heterotrophic denitrification biological nitrogen removal needs to add carbon sources into an anoxic unit, only about 70% of nitrate nitrogen in sewage can be removed to the maximum extent, and meanwhile, a corresponding carbon source adding device needs to be matched, so that the method is high in capital investment, high in operating cost and difficult in daily management and maintenance.

SUMMERY OF THE UTILITY MODEL

To the problem that produces now, the utility model aims to provide an autotrophic denitrification device for domestic sewage to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an autotrophic nitrogen removal device applied to domestic sewage comprises a filtering unit and a backwashing unit, wherein the side wall of the top end of the filtering unit is communicated with a water inlet pipeline, an autotrophic filter material, a filter material supporting layer and a filter plate filter head are sequentially arranged in the filtering unit from top to bottom, the autotrophic filter material is arranged below the water inlet pipeline, the filtering unit is in contact with the backwashing unit, one side of the bottom end of the filtering unit is connected with a backwashing fan, the other side of the bottom end of the filtering unit is connected with the backwashing unit through a backwashing water pump, and a water outlet pipeline is arranged on the side wall of the backwashing unit.

As a further aspect of the present invention: the filtering unit box body and the back washing unit are made of carbon steel anti-corrosion materials.

As a further aspect of the present invention: the filter heads of the filter plates are provided with a plurality of groups, and the filter heads of the plurality of groups of filter plates are uniformly arranged below the filter material bearing layer.

As a further aspect of the present invention: the filter material supporting layer adopts natural pebbles with the diameter of 5-10 mm.

As a further aspect of the present invention: the autotrophic filter material is a ceramsite filter material with the particle size of 3-5 mm.

Compared with the prior art; the beneficial effects of the utility model are that: the utility model discloses water intake pipe prevents into water, filters in proper order through autotrophy type filter material, filter material bearing layer, filter plate filter head, conveniently carries out filtration treatment with domestic sewage, conveniently blows off high-speed wind through the back flush fan after the work is accomplished, conveniently gets rid of the dirt on autotrophy type filter material, filter material bearing layer, the filter plate filter head, conveniently washs autotrophy type filter material, filter material bearing layer, filter plate filter head. The backwashing water pump rotates forwards, so that filtered water is conveniently transmitted to the backwashing unit for precipitation, and precipitated clear water is conveniently discharged from the water outlet pipeline and is beneficial to being used as other functions. When the backwashing water pump rotates reversely, water in the backwashing unit is pumped out, high-speed water flow is conveniently sprayed out, the autotrophic filter material, the filter material supporting layer and the filter head of the filter plate are washed from bottom to top, the safety of the device is ensured, the maintenance of the device is reduced, the operation cost is low, the time is saved, and the use cost is reduced.

Drawings

FIG. 1 is a schematic view showing the structure of an autotrophic nitrogen removal device applied to domestic sewage.

In the figure: 1. a water inlet pipeline; 2. an autotrophic filter material; 3. a filter material support layer; 4. a filter head of a filter plate; 5. a back washing fan; 6. backwashing the water pump; 7. a water outlet pipeline; 8. a filtration unit; 9. a backwashing unit.

Detailed Description

The drawings in the embodiments of the invention will be incorporated below; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; rather than all embodiments. Based on the embodiments of the invention; all other embodiments obtained by a person of ordinary skill in the art without making any creative effort; all fall within the scope of protection of the present invention.

In the description of the present invention, it is to be noted that the terms "mounted," "provided," "connected," and "connected" are to be construed broadly unless otherwise explicitly specified or limited; for example, the two elements may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, an autotrophic nitrogen removal device applied to domestic sewage comprises a filter unit 8 and a backwashing unit 9, wherein the top side wall of the filter unit 8 is communicated with a water inlet pipeline 1, an autotrophic filter material 2, a filter material supporting layer 3 and a filter head 4 of the filter plate are sequentially arranged in the filter unit 8 from top to bottom, the autotrophic filter material 2 is arranged below the water inlet pipeline 1, the filter unit 8 is in contact with the backwashing unit 9, one side of the bottom end of the filter unit 8 is connected with a backwashing fan 5, the other side of the bottom end of the filter unit 8 is connected with the backwashing unit 9 through a backwashing water pump 6, a water outlet pipeline 7 is arranged on the side wall of the backwashing unit 9, the water inlet pipeline 1 prevents water from entering, and the domestic sewage is filtered sequentially through the autotrophic filter material 2, the filter material supporting layer 3 and the filter head 4 of the filter plate, so that the domestic sewage can be conveniently filtered. After the operation is finished, high-speed air is blown out conveniently through the back washing fan 5, dirt on the autotrophic filter material 2, the filter material bearing layer 3 and the filter head 4 of the filter plate is removed conveniently, and the autotrophic filter material 2, the filter material bearing layer 3 and the filter head 4 of the filter plate are cleaned conveniently. The backwashing water pump 6 rotates forwards, so that filtered water is conveniently transmitted to the backwashing unit 9 for precipitation, and precipitated clear water is conveniently discharged from the water outlet pipeline 7, so that the filtered clear water can be used as other functions. When the backwashing water pump 6 rotates reversely, water in the backwashing unit 9 is pumped out, high-speed water flow is conveniently sprayed out, the autotrophic filter material 2, the filter material supporting layer 3 and the filter head 4 of the filter plate are washed from bottom to top, the safety of the device is ensured, the maintenance of the device is reduced, the operation cost is low, the time is saved, and the use cost is reduced.

The autotrophic filter material, the filter material bearing layer and the filter head filter plate are arranged in the filter unit box body, the autotrophic filter material and the filter material bearing layer are sequentially filled from top to bottom, and the backwashing fan and the backwashing water pump are arranged nearby the filter unit and the backwashing unit box body.

The filtering unit box body 8 and the back washing unit 9 of the novel autotrophic nitrogen removal device are made of carbon steel anti-corrosion materials,

the filter heads 4 of the filter plates are provided with a plurality of groups, the filter heads 4 of the plurality of groups of filter plates are uniformly arranged below the filter material supporting layer 3, the filter material supporting layer 3 adopts natural pebbles with the diameter of 5-10mm and the autotrophic filter material 2 adopts a ceramsite filter material with the particle diameter of 3-5 mm.

The backwashing unit is provided with 1 backwashing fan and 1 backwashing water pump, wherein the backwashing fan adopts a rotary fan, and the backwashing water pump adopts a vertical centrifugal pump.

The object of the present invention (utility model): the autotrophic nitrogen removal device is usually arranged in an advanced treatment unit of a domestic sewage treatment system, a matched carbon source dosing system is not needed, the daily maintenance is simple, the operation and management cost is low, and the autotrophic nitrogen removal filter material is only required to be replaced periodically. The utility model discloses water intake pipe prevents into water, filters in proper order through autotrophy type filter material, filter material supporting layer, filter plate filter head, conveniently carries out filtration treatment with domestic sewage, conveniently blows off high-speed wind through the back flush fan after the work is accomplished, conveniently gets rid of the dirt on autotrophy type filter material, filter material supporting layer, the filter plate filter head, conveniently washs autotrophy type filter material, filter material supporting layer, filter plate filter head. The backwashing water pump rotates forwards, so that filtered water is conveniently transmitted to the backwashing unit for precipitation, and precipitated clear water is conveniently discharged from the water outlet pipeline and is beneficial to being used as other functions. When the backwashing water pump rotates reversely, water in the backwashing unit is pumped out, high-speed water flow is conveniently sprayed out, the autotrophic filter material, the filter material supporting layer and the filter head of the filter plate are washed from bottom to top, the safety of the device is ensured, the maintenance of the device is reduced, the operation cost is low, the time is saved, and the use cost is reduced.

The autotrophic nitrogen removal device provided by the invention uses autotrophic denitrifying bacteria (certain chemoautotrophic microorganisms) to utilize inorganic carbon (CO 2, HCO 3-CO 32-) as a carbon source, uses inorganic substances (S, S2-S2O 32-and the like) as an electron donor for nitrate nitrogen reduction to complete microorganism metabolism, and reduces NO3-N in water polluted by nitrate nitrogen lacking an organic carbon source into N2, so that the total nitrogen in sewage can be removed without adding a carbon source.

To those skilled in the art; it is obvious that the invention is not restricted to the details of the above-described exemplary embodiments; and without departing from the spirit or essential characteristics of the invention; the invention can be embodied in other specific forms. Thus; from whatever point; the embodiments should be considered as exemplary; and is not limiting; the scope of the invention is indicated by the appended claims rather than by the foregoing description; all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore; it should be understood that; although the present specification has been described in terms of embodiments; but not every embodiment contains only a single solution; this manner of description is by way of clarity only; the person skilled in the art will be able to take the description as a whole; the technical schemes in the embodiments can also be combined appropriately; forming other embodiments as will be appreciated by those skilled in the art.

Claims

1. The utility model provides an autotrophic denitrification device for domestic sewage, its characterized in that, including filter unit (8) and back flush unit (9), filter unit (8) top lateral wall and inlet channel (1) intercommunication, filter unit (8) inside from the top down is equipped with autotrophic filter material (2), filter material supporting layer (3), filter plate filter head (4) in proper order, autotrophic filter material (2) set up in inlet channel (1) below, filter unit (8) and back flush unit (9) contact setting, filter unit (8) bottom one side and back flush fan (5) are connected, filter unit (8) bottom opposite side is connected through back flush water pump (6) and back flush unit (9), back flush unit (9) lateral wall is equipped with outlet conduit (7).

2. The autotrophic nitrogen removal device for domestic sewage according to claim 1, wherein the filtration unit (8) and the backwash unit (9) are made of carbon steel corrosion-resistant material.

3. The autotrophic nitrogen removal device for domestic sewage according to claim 2, wherein the filter heads (4) are provided in a plurality of groups, and the plurality of groups of filter heads (4) are uniformly disposed below the filter material support layer (3).

4. The autotrophic nitrogen removal device for domestic sewage according to claim 3, wherein the filter material support layer (3) is made of natural pebbles having a diameter of 5-10 mm.

5. The autotrophic nitrogen removal device for domestic sewage according to claim 4, wherein the autotrophic filter material (2) is a ceramsite filter material with a particle size of 3-5 mm.