CN217972737U - Aerobic aeration tank for removing total nitrogen in wastewater - Google Patents

Abstract

The utility model belongs to ethanol waste water treatment field provides an aerobic aeration tank for total nitrogen in desorption waste water, include: the first sedimentation tank, equalizing basin, good oxygen pond, second sedimentation tank and the pond that catchments that communicate in proper order are connected with the aeration pipe between good oxygen pond bottom and the lateral wall, and the aeration pipe communicates with the apparatus of oxygen supply of placing outside good oxygen pond, and good oxygen pond top is equipped with a plurality of showers, and the shower bottom is equipped with high-pressure spray nozzle, and the shower communicates with the water pump of placing in the pond that catchments. The utility model discloses an aerobic aeration tank for total nitrogen in desorption waste water for solve the technical problem that aerobic aeration tank surface produced the foam.

Description

Aerobic aeration tank for removing total nitrogen in wastewater

Technical Field

The utility model relates to an ethanol waste water treatment field especially relates to an aerobic aeration tank for total nitrogen in desorption waste water.

Background

In the ethanol production, water pollution is serious, the inventor breeds strains suitable for SND to obtain the viability in an aerobic environment, and simultaneously performs induction screening on the strains to obtain strains with the capability of reducing total nitrogen, the aim of converting the nitro nitrogen in the aerobic aeration tank into nitrogen is fulfilled completely or mostly through the SND, the dissolved nitrogen in water is removed, the capability of massively treating high-nitrogen high-concentration sewage is realized, and the sewage reaches the standard and is discharged.

In the denitrification treatment process, the condition that a large amount of foam is generated on the surface of the aerobic aeration tank is often encountered, and the foam overflows from the tank, so that the external tank wall of external equipment is seriously polluted, the operation condition is deteriorated, and the surrounding environment is seriously influenced.

Common causes of foam generation are:

1. the raw water contains a large amount of substances added in the production process of surfactant components, so that foams are white bubbles, fine and light and do not have viscosity.

2. The short-term influence of the micro-bubbles generated after the new installation of the aeration head.

3. The foam generated by the growth and reproduction of the microorganisms is muddy bubble with viscosity.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aerobic aeration tank for removing total nitrogen in wastewater, which is used for solving the technical problem that foam is generated on the surface of the aerobic aeration tank in the background technology.

The utility model provides a technical scheme as follows: an aerobic aeration tank for removing total nitrogen in wastewater, comprising: the first sedimentation tank, equalizing basin, good oxygen pond, second sedimentation tank and the pond that catchments that communicate in proper order are connected with the aeration pipe between good oxygen pond bottom and the lateral wall, and the aeration pipe communicates with the apparatus of oxygen supply of placing outside good oxygen pond, and good oxygen pond top is equipped with a plurality of showers, and the shower bottom is equipped with high-pressure spray nozzle, and the shower communicates with the water pump of placing in the pond that catchments.

Furthermore, first sedimentation tank downside is equipped with the waste water import, and first sedimentation tank upside is equipped with first filtering component through first pipeline and equalizing basin intercommunication, middle part in the first sedimentation tank.

Further, the first filter assembly includes: the filter cloth layer, the filter plate layer and the sandstone layer are arranged from top to bottom in sequence.

Furthermore, the upper side of the adjusting tank is communicated with the aerobic tank through a second pipeline.

Furthermore, the oxygen supply device is communicated with an aerator pipe through a third pipeline, and a plurality of air outlet holes are formed in the aerator pipe.

Further, the upper side of the aerobic tank is communicated with the lower side of the second sedimentation tank through a fourth pipeline, the upper side of the second sedimentation tank is communicated with the upper side of the water collecting tank through a fifth pipeline, and the middle part in the second sedimentation tank is connected with a second filtering component.

Further, the second filter assembly includes: the activated carbon adsorption layer and the zeolite adsorption layer are sequentially arranged from top to bottom.

Furthermore, the spray pipe is communicated with the water pump through a sixth pipeline.

Furthermore, a water outlet is arranged at the upper side of the water collecting tank.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model is used for the good oxygen aeration tank of total nitrogen in desorption waste water through connect the aeration pipe between bottom and lateral wall in good oxygen pond, can even aeration and can improve the bubble and gather and to directly improve the gas content in the aeration tank, after the air is absorbed by the microorganism, the biochemical reaction of going on has promoted the oxidation and the decomposition of microorganism to organic matter in the aquatic.

(2) The utility model is used for the good oxygen aeration tank of total nitrogen in desorption waste water through setting up shower and high-pressure spray nozzle, utilizes the rivers that spray at a high speed to smash the bubble that floats at the surface of water, and the partial sludge granule that is broken up resumes the settlement performance again to reduce the foam.

(3) The utility model is used for the good oxygen aeration tank of total nitrogen in desorption waste water supplies water for the shower through the catch basin, makes the water cycle use in the equipment, has avoided the waste of resource.

Drawings

FIG. 1 is a schematic diagram of the whole structure of an aerobic aeration tank for removing total nitrogen in wastewater.

The reference numbers are as follows: 1. the device comprises a first sedimentation tank, 11, a wastewater inlet, 12, a first filtering component, 13, a first pipeline, 2, a regulating tank, 21, a second pipeline, 3, an aerobic tank, 31, an aeration pipe, 32, a fourth pipeline, 4, a second sedimentation tank, 41, a fifth pipeline, 42, a second filtering component, 5, a water collecting tank, 51, a water pump, 52, a sixth pipeline, 53, a water outlet, 6, an oxygen supply device, 61, a third pipeline, 7, a spray pipe, 71 and a high-pressure spray nozzle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, the utility model relates to an aerobic aeration tank for removing total nitrogen in wastewater, which comprises: the first sedimentation tank 1, equalizing basin 2, good oxygen pond 3, second sedimentation tank 4 and the collecting basin 5 that communicate in proper order, its characterized in that is connected with the aeration pipe 31 between bottom and the lateral wall in the good oxygen pond 3, and aeration pipe 31 communicates with the apparatus of oxygen supply 6 of placing outside good oxygen pond 3, and good oxygen pond 3 top is equipped with a plurality of shower pipes 7, and shower pipe 7 bottom is equipped with high-pressure spray nozzle 71, and shower pipe 7 communicates with the water pump 51 of placing in the collecting basin 5.

The first sedimentation tank 1 of the present embodiment is used for sedimentation of relatively large-sized impurities in the ethanol production wastewater.

The adjusting tank 2 of this embodiment is used for adjusting quality of water yield, makes waste water have a comparatively stable water yield and even quality of water before handling.

The aerobic tank 3 of this embodiment creates an aerobic environment by connecting the aeration pipe 31 between the bottom and the side wall, and the target of converting nitro-nitrogen into nitrogen gas can be realized completely through SND synchronous nitrification and denitrification in the wastewater, thereby removing the total nitrogen in the wastewater.

The spray pipe 7 and the high-pressure spray nozzle 71 of the embodiment break up bubbles floating on the water surface by using the water flow sprayed at a high speed, and the broken-up sludge particles recover the sedimentation performance again, thereby reducing the foam.

The second sedimentation tank 4 of this embodiment is used for carrying out secondary sedimentation, filtration to the water after total nitrogen removal, makes the sewage obtain further purification.

The catch basin 5 of this embodiment is used for the water storage, supplies water for shower 7 simultaneously, makes the water cycle use in the equipment, has avoided the waste of resource.

Further, 1 downside in first sedimentation tank is equipped with waste water import 11, and 1 upside in first sedimentation tank is equipped with first filtering component 12 through first pipeline 13 and equalizing basin 2 intercommunication, middle part in 1 in the first sedimentation tank.

The first filter assembly 12 of the present embodiment includes: the filter cloth layer, the filter plate layer and the sandstone layer are arranged from top to bottom in sequence.

The first filter assembly 12 of the present embodiment is mainly used for filtering solid impurities in waste water at a time.

The first pipeline 13 of the present embodiment is on the upper side of the first sedimentation tank 1, and is used for discharging the water filtered by the first filtering component 12 into the regulation tank 2.

Further, the upper side of the adjusting tank 2 is communicated with the aerobic tank 3 through a second pipeline 21.

Furthermore, the oxygen supply device 6 is communicated with the aeration pipe 31 through a third pipeline 61, and a plurality of air outlets are arranged on the aeration pipe 31.

The aeration pipe 31 of the embodiment is provided with the air outlet, so that fine air bubbles can be generated in the aeration pipe 31, and the air bubble coalescence phenomenon can be improved.

The oxygen supply device 6 of the present embodiment is a blower for blowing air into the aerobic tank 3.

Further, the upper side of the aerobic tank 3 is communicated with the lower side of the second sedimentation tank 4 through a fourth pipeline 32, the upper side of the second sedimentation tank 4 is communicated with the upper side of the water collecting tank 5 through a fifth pipeline 41, and the middle part in the second sedimentation tank 4 is connected with a second filtering component 42.

The second filter assembly 42 of the present embodiment includes: the activated carbon adsorption layer and the zeolite adsorption layer are sequentially arranged from top to bottom.

The second filtering component 42 of the present embodiment is used for performing secondary filtering and adsorption on the wastewater without total nitrogen, so that the wastewater is further evolved.

Further, the shower pipe 7 communicates with the water pump 51 through a sixth pipe 52.

Further, a water outlet 53 is arranged on the upper side of the water collecting tank 5.

The working principle is as follows: the wastewater produced by ethanol enters a first sedimentation tank 1 from a wastewater inlet 11, the wastewater after primary filtration by a first filtration component 12 enters an adjusting tank 2 through a first pipeline 13, the wastewater after water quality and water quantity adjustment in the adjusting tank 2 enters an aerobic tank 3 through a second pipeline 21, an oxygen supply device 6 is started to blow air into the aerobic tank 3 through an aeration pipe 31 to create an aerobic environment, so that the nitro-nitrogen in the wastewater can be completely converted into nitrogen through SND (selective non-catalytic reduction) synchronous nitrification and denitrification, the total nitrogen in the wastewater is removed, the denitrified wastewater enters a water collecting tank 5 through a fifth pipeline 41, and the denitrified wastewater is subjected to secondary filtration and adsorption by a second filtration component 42 and then is discharged or supplies water to a spray pipe 7; if a large amount of foam is generated on the surface of the aerobic tank 3, the water pump 51 is started, and bubbles floating on the water surface are broken up by the water flow sprayed at high speed through the spray pipe 7 and the high-pressure spray nozzle 71.

Claims (9)

1. An aerobic aeration tank for removing total nitrogen in wastewater, comprising: first sedimentation tank (1), equalizing basin (2), good oxygen pond (3), second sedimentation tank (4) and collecting basin (5) that communicate in proper order, its characterized in that, be connected with aeration pipe (31) between bottom and the lateral wall in good oxygen pond (3), aeration pipe (31) with place oxygen supply apparatus (6) intercommunication outside good oxygen pond (3), good oxygen pond (3) top is equipped with a plurality of shower (7), shower (7) bottom is equipped with high pressure spray nozzle (71), shower (7) with place water pump (51) intercommunication in collecting basin (5).

2. An aerobic aeration tank for the removal of total nitrogen in wastewater according to claim 1, wherein the lower side of the first sedimentation tank (1) is provided with a wastewater inlet (11), the upper side of the first sedimentation tank (1) is communicated with the adjusting tank (2) through a first pipeline (13), and the middle part in the first sedimentation tank (1) is provided with a first filtering component (12).

3. An aerobic aeration tank for the removal of total nitrogen in wastewater according to claim 2 wherein the first filter assembly (12) comprises: the filter cloth layer, the filter plate layer and the sandstone layer are arranged from top to bottom in sequence.

4. An aerobic aeration tank for the removal of total nitrogen in wastewater according to claim 1, wherein the upper side of the conditioning tank (2) is connected to the aerobic tank (3) via a second pipe (21).

5. An aerobic aeration tank for the removal of total nitrogen in wastewater according to claim 1, wherein the oxygen supply device (6) is connected to the aeration pipe (31) through a third pipeline (61), and the aeration pipe (31) is provided with a plurality of air outlet holes.

6. An aerobic aeration tank for removing total nitrogen in wastewater according to claim 1, wherein the upper side of the aerobic tank (3) is communicated with the lower side of the second sedimentation tank (4) through a fourth pipeline (32), the upper side of the second sedimentation tank (4) is communicated with the upper side of the water collecting tank (5) through a fifth pipeline (41), and a second filtering component (42) is connected to the middle part in the second sedimentation tank (4).

7. An aerobic aeration tank for the removal of total nitrogen in wastewater according to claim 6 wherein the second filter assembly (42) comprises: the activated carbon adsorption layer and the zeolite adsorption layer are sequentially arranged from top to bottom.

8. An aerobic aeration tank for the removal of total nitrogen in wastewater according to claim 1, whereby the shower pipe (7) is connected to the water pump (51) via a sixth pipe (52).

9. An aerobic aeration tank for the removal of total nitrogen in wastewater according to claim 1, wherein the water collection tank (5) is provided with water outlets (53) at the upper side.

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