CN217868326U

CN217868326U - Sewage treatment equipment

Info

Publication number: CN217868326U
Application number: CN202222144707.2U
Authority: CN
Inventors: 马宁
Original assignee: Siemens Energy Inc
Current assignee: Siemens Energy Inc
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-11-22
Anticipated expiration: 2032-08-16

Abstract

The utility model discloses a sewage treatment device, it includes: a denitrification tank into which a fluid to be treated flows via a fluid inlet provided at the denitrification tank; the nitrification tank is arranged at the downstream of the denitrification tank and is communicated with the denitrification tank, so that the fluid flowing out of the denitrification tank flows into the nitrification tank; an activated carbon supply configured to supply activated carbon to the fluid in the nitrification tank; an aeration device disposed in the nitrification tank and configured to supply oxygen to the fluid in the nitrification tank; a filtration assembly disposed in the nitrification tank and configured to filter microorganisms, sludge, and activated carbon in the fluid in the nitrification tank; and a drain line having one end connected to the filter assembly and configured to discharge the fluid filtered by the filter assembly to the outside of the nitrification tank by means of a drain pump. Therefore, the sewage can be fully contacted and degraded by more microorganisms, the adding amount of the powdered activated carbon is reduced, the operation cost is reduced, the discharge amount of the waste carbon sludge is reduced, and the secondary pollution is reduced.

Description

Sewage treatment equipment

Technical Field

The utility model relates to a sewage treatment's field generally to more specifically relate to a sewage treatment device, especially a sewage treatment device that combines together many bent way formula denitrification tank structure and powdered activated carbon adsorption membrane bioreactor.

Background

For the application of the technology of combining powdered activated carbon adsorption and biodegradation in sewage (especially high-difficulty biodegradable wastewater), secondary pollution can be caused because waste carbon sludge is generated by activated carbon adsorption.

In addition, the existing biological treatment tank body combined with powdered activated carbon is of a full-mixing type, and one end of the tank body is used for feeding water and the other end of the tank body is used for discharging water. The inside of cell body is provided with agitating unit for solid-phase material in the cell body is in the suspended state. Such a structure may cause a short flow phenomenon, may not allow a carbon source in raw water (i.e., sewage to be treated) to sufficiently contact with microorganisms in the pond for degradation, or may require additional carbon source supplementation. This results in low denitrification biodegradation efficiency, the total nitrogen content of the effluent does not reach the standard, and the carbon source which is not degraded sufficiently needs to be added with more active carbon for adsorption to meet the requirement of qualified effluent of the treatment system.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to reduce the addition of powdered activated carbon, make full use of the biodegradable function and prevent the short-flow phenomenon, the utility model discloses combine together many bent ways formula denitrification pond structure and powdered activated carbon adsorption film bioreactor in general in order to handle high difficult biodegradable waste water.

Specifically, the utility model discloses a sewage treatment device, sewage treatment device includes: a denitrification tank into which a fluid to be treated flows via a fluid inlet provided at the denitrification tank; a nitrification tank disposed downstream of and in communication with the denitrification tank such that fluid flowing out of the denitrification tank flows into the nitrification tank; an activated carbon supply configured to supply activated carbon to the fluid in the nitrification tank; an aeration device disposed in the nitrification tank and configured to supply oxygen to the fluid in the nitrification tank; a filtration assembly disposed in the nitrification tank and configured to filter microorganisms, sludge, and activated carbon in fluid in the nitrification tank; and a drain pipe having one end connected to the filter assembly and configured to discharge the fluid filtered by the filter assembly to the outside of the nitrification tank by means of a drain pump. Through such arrangement mode, sewage can be fully contacted and degraded by the microorganism more, improves sewage treatment efficiency, reduces the addition of powdered activated carbon, reduces the running cost, reduces the emission of waste carbon mud simultaneously and reduces secondary pollution.

Further, the denitrification tank includes a plurality of vertical baffles parallel and spaced apart from each other, the denitrification tank is partitioned into a plurality of reaction chambers in series by the plurality of vertical baffles and forms a single flow channel, the denitrification tank is configured such that fluid flowing into the denitrification tank via the fluid inlet can flow through the plurality of reaction chambers through the flow channel and eventually exit the denitrification tank, the flow channel includes an upstream section, an intermediate section, and a downstream section in a flow direction of the fluid in the denitrification tank. By such an arrangement, a multi-bend denitrification tank structure as mentioned above is formed, which maximally prolongs the flow process of sewage (i.e. fluid to be treated) in the anoxic zone (i.e. denitrification tank) under the condition of the same tank body capacity, which not only avoids the occurrence of short flow of sewage in the denitrification tank, but also enables the sewage to be fully contacted and mixed with microorganisms, and prolongs the effective reaction time.

Further, the sewage treatment apparatus further includes a first return pipe connected between the upstream section and the intermediate section or the downstream section, the sewage treatment apparatus being configured such that the fluid in the intermediate section or the downstream section can be returned to the upstream section via the first return pipe. With this arrangement, the sludge in the fluid in the middle or downstream section of the anoxic zone is continuously returned to the upstream section (i.e., the foremost end) of the flow channel in the denitrification tank, and the large flow rate sludge is kept in fluidity along the multi-turn denitrification tank structure and forms a multi-stage fluidized bed.

Further, the fluid inlet is provided at the bottom of the denitrification tank, and a portion of the denitrification tank communicating with the nitrification tank is also provided at the bottom of the denitrification tank, wherein the number of the plurality of vertical baffles is odd and the number of the plurality of reaction chambers is even, so that the plurality of reaction chambers include a first reaction chamber and a second reaction chamber which are the same in number and alternately arranged, in which first reaction chamber the fluid flows in an upward direction, and in which second reaction chamber the fluid flows in a downward direction.

Further, the upstream section comprises at least one of the first reaction chambers.

Further, the first return conduit is configured such that fluid from the downstream section is discharged in a downward direction into the first reaction chamber of the upstream section. With this arrangement, the fluid refluxed into the first reaction chamber of the upstream section naturally obtains an ascending flow velocity by being pushed by the fluid in the flow channel, thus achieving both the upflow reaction and maintaining a high sludge concentration due to the action of the billowing.

Further, the sewage treatment apparatus further includes a degassing tank disposed downstream of the nitrification tank and communicating with the nitrification tank such that the fluid flowing out of the nitrification tank flows into the degassing tank and the fluid in the degassing tank is degassed in the degassing tank, wherein the degassing tank includes a fluid outlet disposed at a bottom of the degassing tank, and the degassing tank is configured such that the fluid in the degassing tank can flow out via the fluid outlet. Through the arrangement mode, the degassing pool is arranged at the downstream of the nitrification pool, and the fluid is fully degassed, so that excessive oxygen brought in when the fluid flows back to the denitrification pool is reduced, and the denitrification efficiency is prevented from being reduced.

Further, the sewage treatment apparatus further comprises a second return conduit connected between the fluid outlet and the denitrification tank, the sewage treatment apparatus being configured such that fluid in the degassing tank can be returned to the intermediate section of the flow channel in the denitrification tank via the second return conduit. Through such arrangement, the degassed fluid in the degassing pool flows back to the anoxic zone, so that the anoxic zone is maintained at a lower dissolved oxygen concentration, denitrification is performed very thoroughly in a longer anoxic flow, a carbon source in sewage is fully utilized, and the denitrification rate is far higher than that of the traditional denitrification depending on endogenous respiration.

Further, the filter assembly is a ceramic membrane assembly. Through such arrangement mode, the ceramic material is more resistant to powder activated carbon scouring, so that the service life of the membrane is longer. The ceramic membrane component arranged in the nitrification tank can intercept microorganisms, sludge and powdered activated carbon, so that suspended matters in the effluent are discharged up to the standard, the microorganisms and the activated carbon are not lost, and the system can operate under the condition of high sludge and activated carbon concentration.

Further, the denitrification tank, the nitrification tank and the deaeration tank are integrated in a single tank body. By such an arrangement, the capacity of the tank body can be utilized more effectively.

Further, the fluid outlet has a funnel shape. By this arrangement, the discharge of sludge deposited at the bottom of the degassing tank is facilitated.

Further, the sewage treatment apparatus further includes a discharge pipe having one end connected to the fluid outlet of the degassing tank and configured to discharge the fluid in the degassing tank to the outside. By such an arrangement, the surplus sludge and the waste carbon sludge can be selectively discharged.

Drawings

The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:

FIG. 1 is a schematic view showing a sewage treatment apparatus of the present invention.

Wherein the reference numbers are as follows:

100. sewage treatment equipment

1. Denitrification tank

11. Vertical guide plate

2. Nitrifying pool

3. Active carbon supply device

4. Aeration device

5. Filter assembly

6. Drainage pipeline

7. First return pipeline

8. Degassing pool

9. Second return line

10. Discharge pipe

F fluid

P drain pump

H1 Fluid inlet

H2 Fluid outlet

S1 upstream section

S2 middle section

S3 downstream section

C1 A first reaction chamber

C2 A second reaction chamber

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail by referring to the following embodiments.

As shown in figure 1, the utility model provides a sewage treatment device. In general, the sewage treatment apparatus 100 may include a denitrification tank 1, a nitrification tank 2, an activated carbon supply device 3, an aeration device 4, a filter assembly 5, and a drainage pipeline 6. The fluid F to be treated can flow into the denitrification tank 1 via a fluid inlet H1 provided at the denitrification tank 1. The nitrification tank 2 is disposed downstream of the denitrification tank 1 and communicates with the denitrification tank 1 so that the fluid flowing out of the denitrification tank 1 flows into the nitrification tank 2. The activated carbon supply device 3 is configured to supply activated carbon to the fluid in the nitrification tank 2. The aeration device 4 is provided in the nitrification tank 2 and is configured to supply oxygen to the fluid in the nitrification tank 2. The filter assembly 5 is disposed in the nitrification tank 2 and is configured to filter microorganisms, sludge, and activated carbon in the fluid in the nitrification tank 2. One end of the drain pipe 6 is connected to the filter assembly 5 and is configured to discharge the fluid filtered by the filter assembly 5 to the outside of the nitrification tank 2 by means of the drain pump P.

In particular, the denitrification tank 1 may comprise a plurality of vertical baffles 11 parallel and spaced apart from each other. The denitrification tank 1 is divided into a plurality of reaction chambers connected in series by a plurality of vertical baffles 11 and forms a single flow channel, thereby forming a multi-turn type denitrification tank structure as mentioned earlier. The denitrification tank 1 can be configured such that fluid flowing into the denitrification tank 1 via the fluid inlet H1 can flow through the plurality of reaction chambers through the flow channel and finally exit the denitrification tank 1. The flow channel includes an upstream section S1, an intermediate section S2, and a downstream section S3 in a flow direction of the fluid in the denitrification tank 1 (the flow direction of the fluid is schematically shown by an arrow in the denitrification tank 1 shown in fig. 1), wherein the upstream section S1 is near the fluid inlet H1, the downstream section S3 is near a portion of the denitrification tank 1 communicating with the nitrification tank 2, and the intermediate section S2 is located between the upstream section S1 and the downstream section S3.

Further, the sewage treatment apparatus 100 may further include a first return pipe 7 connected between the upstream section S1 and the intermediate section S2 or the downstream section S3 (as exemplarily shown in fig. 1, the first return pipe 7 is connected between the upstream section S1 and the downstream section S3). The sewage treatment apparatus 100 may be configured such that the fluid in the intermediate section S2 or the downstream section S3 can be returned to the upstream section S1 via the first return pipe 7.

Specifically, as shown in fig. 1, the fluid inlet H1 may be provided at the bottom of the denitrification tank 1, and a portion of the denitrification tank 1 communicating with the nitrification tank 2 may also be provided at the bottom of the denitrification tank 1. Of course, the present invention is not limited thereto, and the fluid inlet H1 and each of the portions of the denitrification tank 1 communicating with the nitrification tank 2 may be provided at the top of the denitrification tank 1 according to actual needs.

Preferably, the number of the plurality of vertical baffles 11 may be odd (e.g., 1, 3, 5, etc.) and, correspondingly, the number of the plurality of reaction chambers is even (e.g., 2, 4, 6, etc.), such that the plurality of reaction chambers includes the same number of first reaction chambers C1 and second reaction chambers C2 alternately arranged, in which the fluid flows in the upward direction in the first reaction chamber C1 and in which the fluid flows in the downward direction in the second reaction chamber C2. Therefore, the multi-bend denitrification tank structure with the fluid flowing alternately in the upward direction and the downward direction in the vertical direction is realized. In fig. 1, the denitrification tank 1 is divided into six reaction chambers by five vertical baffles 11, including three first reaction chambers C1 and three second reaction chambers C2.

In particularly advantageous embodiments, the upstream section S1 may comprise at least one first reaction chamber C1, for example one first reaction chamber C1, one first reaction chamber C1 and one second reaction chamber C2, two first reaction chambers C1 and one second reaction chamber C2, etc., depending on the number of vertical baffles 11, as required. The first return pipe 7 may be configured such that the fluid from the downstream section S3 is discharged in a downward direction into the first reaction chamber C1 of the upstream section S1, whereby a high sludge concentration can be maintained due to the action of the billowing.

Further, the sewage treatment apparatus 100 may further include a degassing tank 8. The degassing tank 8 may be disposed downstream of the nitrification tank 2 and communicate with the nitrification tank 2, so that the fluid flowing out of the nitrification tank 2 flows into the degassing tank 8 and the fluid in the degassing tank 8 is degassed in the degassing tank 8. Also, in the degassing tank 8, microorganisms, sludge, and waste carbon sludge are gradually deposited to the bottom of the degassing tank 8. The degassing tank 8 includes a fluid outlet H2 provided at the bottom of the degassing tank 8, and the degassing tank 8 is configured such that the fluid in the degassing tank 8 can flow out via the fluid outlet H2.

The sewage treatment plant 100 may further comprise a second return conduit 9 connected between the fluid outlet H2 and the denitrification tank. The sewage treatment plant 100 is configured such that the fluid in the degassing tank 8 can be returned to the denitrification tank 1 via the second return conduit 9, preferably to the middle section S2 of the flow channel in the denitrification tank 1.

Advantageously, the filtering assembly 5 may be a ceramic membrane assembly, but is not limited thereto. The ceramic membrane component can effectively ensure that the effluent suspended matters are discharged up to the standard and prolong the service life.

As shown in fig. 1, the denitrification tank 1, the nitrification tank 2 and the deaeration tank 8 may be integrated in a single tank body. The structure can fully utilize the capacity of the tank body, and the flowing process of sewage in the anoxic zone is prolonged to the maximum extent under the condition of the same tank body capacity, so that the sewage can be in full contact reaction with microorganisms in the anoxic zone. Of course, the present invention is not limited thereto, and the denitrification tank 1, the nitrification tank 2 and the deaeration tank 8 may be disposed separately from each other and connected together by corresponding pipes according to actual needs.

Preferably, as shown in fig. 1, the fluid outlet H2 may have a funnel shape, thereby facilitating the discharge of the fluid in the degassing tank 8.

Preferably, as shown in fig. 1, the sewage treatment apparatus 100 may further include a discharge pipe 10. One end of the discharge pipe 10 is connected to the fluid outlet H2 of the degassing tank 8 and is configured to discharge the fluid in the degassing tank 8 to the outside, thereby discharging the remaining sludge and the waste carbon sludge as needed.

Utilize the utility model discloses a sewage treatment device 100, sewage can be more by the abundant contact degradation of microorganism, improves sewage treatment efficiency, reduces the addition of powder active carbon, reduces the running cost, reduces the emission of useless carbon mud and reduces secondary pollution simultaneously.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage treatment apparatus, characterized in that the sewage treatment apparatus (100) comprises:

a denitrification tank (1) into which a fluid (F) to be treated flows (1) via a fluid inlet (H1) provided at the denitrification tank (1);

a nitrification tank (2), wherein the nitrification tank (2) is arranged at the downstream of the denitrification tank (1) and is communicated with the denitrification tank (1), so that the fluid flowing out of the denitrification tank (1) flows into the nitrification tank (2);

an activated carbon supply device (3), the activated carbon supply device (3) being configured to supply activated carbon to the fluid in the nitrification tank (2);

an aeration device (4), the aeration device (4) being disposed in the nitrification tank (2) and configured to supply oxygen to the fluid in the nitrification tank (2);

a filtration assembly (5), the filtration assembly (5) being disposed in the nitrification tank (2) and configured to filter microorganisms, sludge and activated carbon in the fluid in the nitrification tank (2); and

a drainage pipe (6), one end of said drainage pipe (6) being connected to said filter assembly (5) and configured to enable drainage of the fluid filtered by said filter assembly (5) outside said nitrification tank (2) by means of a drainage pump (P).

2. The wastewater treatment plant according to claim 1, characterized in that the denitrification tank (1) comprises a plurality of vertical baffles (11) parallel and spaced apart from each other, the denitrification tank (1) being divided by the plurality of vertical baffles (11) into a plurality of reaction chambers in series and forming a single flow channel, the denitrification tank (1) being configured such that fluid flowing into the denitrification tank (1) via the fluid inlet (H1) can flow through the plurality of reaction chambers through the flow channel and finally exit the denitrification tank (1), the flow channel comprising an upstream section (S1), an intermediate section (S2) and a downstream section (S3) in the flow direction of the fluid in the denitrification tank (1).

3. The wastewater treatment apparatus according to claim 2, characterized in that the wastewater treatment apparatus (100) further comprises a first return pipe (7) connected between the upstream section (S1) and the intermediate section (S2) or the downstream section (S3), the wastewater treatment apparatus (100) being configured such that the fluid in the intermediate section (S2) or the downstream section (S3) can be returned to the upstream section (S1) via the first return pipe (7).

4. Sewage treatment plant according to claim 3, characterised in that the fluid inlet (H1) is arranged at the bottom of the denitrification tank (1) and that the part of the denitrification tank (1) communicating with the nitrification tank (2) is also arranged at the bottom of the denitrification tank (1),

wherein the number of the plurality of vertical baffles (11) is odd and the number of the plurality of reaction chambers is even, such that the plurality of reaction chambers includes a first reaction chamber (C1) and a second reaction chamber (C2) which are equal in number and alternately arranged, in the first reaction chamber (C1), the fluid flows in an upward direction, and in the second reaction chamber (C2), the fluid flows in a downward direction.

5. Sewage treatment plant according to claim 4, characterised in that said upstream section (S1) comprises at least one of said first reaction chambers (C1).

6. The wastewater treatment plant according to claim 5, characterized in that the first return conduit (7) is configured so as to discharge the fluid coming from the downstream section (S3) in a downward direction into the first reaction chamber (C1) of the upstream section (S1).

7. The wastewater treatment plant according to claim 2, characterized in that the wastewater treatment plant (100) further comprises a degassing tank (8), the degassing tank (8) being arranged downstream of the nitrification tank (2) and communicating with the nitrification tank (2) such that fluid flowing out of the nitrification tank (2) flows into the degassing tank (8) and degasses fluid in the degassing tank (8),

wherein the degassing tank (8) comprises a fluid outlet (H2) arranged at the bottom of the degassing tank (8), and the degassing tank (8) is configured such that fluid in the degassing tank (8) can flow out via the fluid outlet (H2).

8. Sewage treatment plant according to claim 7, characterised in that said sewage treatment plant (100) further comprises a second return conduit (9) connected between said fluid outlet (H2) and said denitrification tank (1), said sewage treatment plant (100) being configured such that fluid in said degassing tank (8) can be returned to said intermediate section (S2) of said flow channel in said denitrification tank (1) via said second return conduit (9).

9. Sewage treatment plant according to claim 1, characterised in that said filter modules (5) are ceramic membrane modules.

10. Sewage treatment plant according to claim 7, characterised in that said denitrification tank (1), said nitrification tank (2) and said degassing tank (8) are integrated in a single tank body.

11. Sewage treatment plant according to claim 7, characterised in that said fluid outlet (H2) has a funnel-like shape.

12. The wastewater treatment apparatus according to claim 7, characterized in that the wastewater treatment apparatus (100) further comprises a discharge pipe (10), one end of the discharge pipe (10) being connected to the fluid outlet (H2) of the degassing tank (8) and being configured to discharge the fluid in the degassing tank (8) to the outside.