CN219314682U - Biochemical pool for sewage treatment - Google Patents
Biochemical pool for sewage treatment Download PDFInfo
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- CN219314682U CN219314682U CN202223395348.4U CN202223395348U CN219314682U CN 219314682 U CN219314682 U CN 219314682U CN 202223395348 U CN202223395348 U CN 202223395348U CN 219314682 U CN219314682 U CN 219314682U
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- water outlet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model relates to a biochemical tank for sewage treatment, which comprises a tank body and a medicament adding assembly, wherein the tank body is provided with a first water outlet; the first water outlet is provided with a canal box in the tank body, and the canal box is provided with a second water outlet communicated with the first water outlet and a water inlet communicated with the tank body; the medicament adding component comprises a pressure pump arranged on the canal box, a water outlet pipe connected with the water outlet end of the pressure pump and a water inlet pipe connected with the water inlet end of the pressure pump, and the water outlet port of the water outlet pipe is positioned at the water inlet. Through setting up the canal case in the biochemical pond, spray into the phosphorus removal agent mixed solution to sewage in the water inlet department of canal case, let sewage through the water inlet can mix with phosphorus removal agent mixed solution better, improve the coagulation effect of sewage and phosphorus removal agent, let the utilization ratio of phosphorus removal agent obtain improving, realize the dose reduction of the phosphorus removal agent of instant throwing, also can ensure out water total phosphorus emission up to standard, reduce the input cost of phosphorus removal agent.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a biochemical tank for sewage treatment.
Background
Most water purifying plants adopt a first-level A discharge standard, wherein the total phosphorus requirement is not higher than 0.5mg/L, but when sewage is in a biochemical pond, a large amount of dissolved oxygen is carried in the sewage, so that the anaerobic area is difficult to form a normal anaerobic environment, anaerobic microorganisms are difficult to survive, and the phosphorus release is insufficient, so that the biological phosphorus removal efficiency is difficult to meet the requirement, and chemical auxiliary phosphorus removal is necessary. The common mode of sewage treatment plants is to add a dephosphorizing agent into a biochemical pool, combine with phosphorus in sewage to form a precipitate, and remove the precipitate by a sludge discharge mode. However, the water flow at the water outlet end of the biochemical tank is gentle, so that the full coagulation of the dephosphorizing agent and sewage is not facilitated, most of the dephosphorizing agent returns to the front end of the biochemical tank through a reflux pump, the utilization rate of the dephosphorizing agent is reduced, and the medicine consumption is higher. And a large amount of chemical agents are added to pollute the MBR membrane.
Disclosure of Invention
The utility model provides a biochemical tank for sewage treatment, which aims to solve the problem of higher adding amount of the dephosphorizing agent in the prior art, can improve the utilization rate of the dephosphorizing agent, and can reduce the adding amount of the dephosphorizing agent to meet the total phosphorus requirement.
In order to solve the technical problems, the utility model adopts the following technical scheme: the biochemical pond for sewage treatment comprises a pond body and a medicament adding assembly, wherein the pond body is provided with a first water outlet; the tank body is internally provided with a first water outlet and a second water outlet communicated with the first water outlet, and a water inlet communicated with the tank body; the medicament adding assembly comprises a pressure pump arranged on the canal box, a water outlet pipe connected with the water outlet end of the pressure pump and a water inlet pipe connected with the water inlet end of the pressure pump, and a water outlet port of the water outlet pipe is positioned at the water inlet.
In the above technical scheme, the sewage in biochemical pond needs to flow into the canal box from the water inlet, then get into to first delivery port through the second delivery port of canal box and just flow out to the MBR membrane pond in, when sewage passes through the water inlet, add the dephosphorization agent to the inlet tube in mix with water, then spout the mixed solution after the pressurization from the outlet port through the effect of pump under pressure and mix with the sewage through the water inlet, the mixed solution after the pressurization can comparatively evenly spray into sewage, sewage and medicament carry out high-speed mixing in the canal box simultaneously, improve the coagulation effect of sewage and dephosphorization agent, after having improved the utilization ratio of dephosphorization agent, even the dephosphorization agent of throwing in is less, also can ensure out water total phosphorus discharge up to standard.
Preferably, the water inlet pipe is provided with a jet device, and the jet device is used for mixing water and the dephosphorizing agent. The jet device is able to better mix the medicament and the water flow.
Preferably, the water outlet pipe comprises a first water outlet branch pipe and a second water outlet branch pipe which are respectively positioned at two opposite sides of the water inlet, and the first water outlet branch pipe and the second water outlet branch pipe are respectively provided with a plurality of water outlet ports. The mixed solution containing the dephosphorization agent flows out from the water outlet ports positioned at two opposite sides of the water inlet and is mixed with sewage, so that the uniform mixing effect is better, and the situation that more dephosphorization agent is only contained in the sewage near one side of the water outlet port or the sewage near one side of the water outlet port is only contained in the sewage is avoided.
Preferably, the water outlet ports are provided with pressurizing spray heads. The pressurizing nozzle can enable the mixed solution of the dephosphorizing agent to be mixed into the sewage at higher pressure, so that the mixed solution can be more uniformly dispersed into the sewage, and the coagulation effect of the sewage and the dephosphorizing agent is further improved.
Preferably, the axial direction of the water outlet port is perpendicular to the direction of the water inlet. If the flowing direction of the mixed solution is parallel to the flowing direction of the sewage, the sewage at the water outlet port can be mixed with the dephosphorizing agent, and the mixing effect is not good enough. The flowing direction of the mixed solution is perpendicular to the flowing direction of the sewage, the mixed solution flows from two sides of the sewage to the center of the sewage, which is equivalent to the cross section through which the sewage flows, and the sewage passing through the water inlet can be mixed with the mixed solution as much as possible, so that the coagulation effect of the sewage and the dephosphorizing agent is better.
Preferably, the water outlet ports are distributed at equal intervals along the vertical direction of the water inlet, and the dephosphorization agent mixed solution can better cover the position of the water inlet, so that the mixing effect with sewage is better.
Preferably, the height of the canal box is not less than the height of the biochemical pond, and the booster pump is arranged at the top of the canal box. The sewage can not cross the canal box, and the booster pump is installed at the top of the canal box and can avoid contacting with the sewage, and meanwhile, the booster pump can be closer to the water outlet port, so that the phosphorus agent mixed solution can be sprayed out at higher pressure.
Preferably, the water inlet and the second water outlet are respectively positioned at the head end and the tail end of the canal box, and the directions of the water inlet and the second water outlet are mutually perpendicular. The sewage enters the canal box from the water inlet, must flow to the end of the canal box and flow out after passing through a turn, so that the residence time of the sewage in the canal box can be prolonged, and the sewage and the dephosphorization agent mixed solution can be coagulated for a sufficient time.
Preferably, the volume of the trench is greater than the product of the instantaneous flow of the water inlet and the time for the sewage to flow from the water inlet to the second water outlet. In order to allow the sewage to stay in the canal for a sufficient time, the volume of the canal needs to be determined according to the actual time required for the sewage to flow from the water inlet to the second water outlet, namely, the time required for the sewage to stay in the canal is multiplied by the instantaneous flow of the water inlet, so that the coagulation effect of the mixed solution of the sewage and the dephosphorizing agent is maximized.
Compared with the prior art, the utility model has the beneficial effects that: through setting up the canal case in the biochemical pond, spray into the phosphorus removal agent mixed solution to sewage in the water inlet department of canal case, let sewage through the water inlet can mix with phosphorus removal agent mixed solution better, improve the coagulation effect of sewage and phosphorus removal agent, let the utilization ratio of phosphorus removal agent obtain improving, realize the dose reduction of the phosphorus removal agent of instant throwing, also can ensure out water total phosphorus emission up to standard, reduce the input cost of phosphorus removal agent.
Drawings
FIG. 1 is a schematic diagram of a biochemical tank for sewage treatment according to the present utility model;
FIG. 2 is a schematic view of the structure of the trench box of the present utility model;
FIG. 3 is a schematic view showing the structure of another embodiment of a biochemical tank for sewage treatment according to the present utility model.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present utility model and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.
The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:
example 1
1-2, an embodiment of a biochemical tank for sewage treatment comprises a tank body 1 and a medicament adding assembly, wherein the tank body 1 is provided with a first water outlet 101; the water outlet in the tank body 1 is provided with a canal box 2, and the canal box 2 is provided with a second water outlet 201 communicated with the first water outlet 101 and a water inlet 202 communicated with the tank body 1; the medicament adding component comprises a pressure pump 3 arranged on the canal 2, a water outlet pipe 4 connected with the water outlet end of the pressure pump 3 and a water inlet pipe 5 connected with the water inlet end of the pressure pump 3, and a water outlet port 403 of the water outlet pipe 4 is positioned at the water inlet 202.
Specifically, the water inlet pipe 5 is provided with an ejector 6, and the ejector 6 is used for mixing water and the dephosphorizing agent. The jet means 6 is able to better mix the medicament and the water flow. The suction chamber of the jet device 6 is connected with a medicament supply pipe, the nozzle is connected with a water supply pipe, the outlet of the diffusion section is connected with a water inlet pipe, and the dephosphorization agent and the water are mixed in the jet device 6 and then flow to the booster pump 3 through the water inlet pipe 5.
Further, the water outlet pipe 4 includes a first water outlet branch pipe 401 and a second water outlet branch pipe 402 respectively located at two opposite sides of the water inlet 202, and the first water outlet branch pipe 401 and the second water outlet branch pipe 402 are respectively provided with a plurality of water outlet ports 403. The mixed liquid containing the dephosphorizing agent flows out from the water outlet ports 403 positioned on two opposite sides of the water inlet 202 to be mixed with sewage, so that the uniform mixing effect is better, and the situation that more dephosphorizing agent is only contained in the sewage near the water outlet ports 403 or the sewage near the water outlet ports 403 is only contained in the sewage is avoided.
In the present embodiment, the axial direction of the water outlet port 403 is perpendicular to the orientation of the water inlet 202. If the flow direction of the mixed solution is parallel to the flow direction of the sewage, the sewage at the outlet port 403 can be mixed with the dephosphorizing agent, and the mixing effect is not good enough. The flowing direction of the mixed solution is perpendicular to the flowing direction of the sewage, the mixed solution flows from two sides of the sewage to the center of the sewage, which is equivalent to the cross section through which the sewage can flow, and the sewage passing through the water inlet 202 can be mixed with the mixed solution as much as possible, so that the coagulation effect of the sewage and the dephosphorizing agent is better. The water outlet ports 403 are equidistantly distributed along the vertical direction of the water inlet 202, and the dephosphorization agent mixed solution can better cover the position of the water inlet 202, so that the mixing effect with sewage is better.
Specifically, the height of the canal box 2 is not less than the height of the biochemical pond, and the pressurizing pump 3 is installed at the top of the canal box 2. The sewage can not overflow the canal box 2, the pressurizing pump 3 is arranged at the top of the canal box 2, so that the sewage can be prevented from being contacted, and meanwhile, the pressurizing pump 3 can be closer to the water outlet 403, so that the phosphorus agent mixed liquid can be sprayed out at higher pressure. The water inlet 202 and the second water outlet 201 are respectively positioned at the head end and the tail end of the canal 2, and the directions of the water inlet 202 and the second water outlet 201 are mutually perpendicular. The sewage must flow to the end of the canal 2 after entering the canal 2 from the water inlet 202 and flow out after passing through a turn, which can prolong the residence time of the sewage in the canal 2 and allow the sewage and the dephosphorizing agent mixed solution to have sufficient time for coagulation.
The working principle or workflow of the present embodiment: the sewage in biochemical pond needs to flow into canal box 2 from water inlet 202, then get into to first delivery port 101 through the second delivery port 201 of canal box 2 and just flow out to in the MBR membrane pond, when sewage passes through water inlet 202, add dephosphorization agent (dephosphorization agent in this embodiment is aluminium sulfate) to in inlet tube 5 mix with water, then spout the mixed solution after the pressurization from outlet port 403 through the effect of force (forcing) pump 3 with the sewage that passes through water inlet 202, the mixed solution after the pressurization can comparatively evenly spray in the sewage, sewage and medicament carry out high-speed mixing in canal box 2 simultaneously, improve the coagulation effect of sewage and dephosphorization agent, after having improved the utilization ratio of dephosphorization agent, even the dephosphorization agent of throwing into is less, also can ensure that the total phosphorus of play discharges up to standard. Tables 1 and 2 below show the situation before the use of the present embodiment:
TABLE 1 case of adding dephosphorizing agent to biochemical pool
| Consumption of medicine: 1 ton/ten thousand tons of water | Total phosphorus (mg/L) |
| Before chemical addition at the tail end of biochemical pond | 0.22 |
| Effluent (after adding medicine) | 0.195 |
| Removal rate of | 11.36％ |
TABLE 2 case of adding dephosphorizing agent to the biochemical pool of this example
As a result, as shown in Table 2, when the amount of the phosphorus scavenger added was 0.26 ton/ten thousand tons of water, the removal rate was 32.14%, and the total phosphorus in the effluent was 0.19mg/L. Compared with the table 1, when the adding amount of aluminum sulfate is 1 ton/ten thousand tons of water, the total phosphorus of the effluent is 0.195mg/L, and the removal rate is only 11.36%.
The beneficial effects of this embodiment are: through setting up canal 2 in biochemical pond, spout into the phosphorus removal agent mixed solution to sewage in the water inlet 202 department of canal 2, let the sewage that passes through water inlet 202 can mix with phosphorus removal agent mixed solution better, improve the coagulation effect of sewage and phosphorus removal agent, let the utilization ratio of phosphorus removal agent obtain improving, realize the dose reduction of the phosphorus removal agent of instant throwing, also can ensure out water total phosphorus emission up to standard, reduce the input cost of phosphorus removal agent.
Example 2
Example 2 of a biochemical tank for sewage treatment differs from example 1 in that pressurizing nozzles are installed at the water outlet ports 403 on the basis of example 1. The pressurizing nozzle can enable the mixed solution of the dephosphorizing agent to be mixed into the sewage at higher pressure, so that the mixed solution can be more uniformly dispersed into the sewage, and the coagulation effect of the sewage and the dephosphorizing agent is further improved.
The remaining features and operation principle of the present embodiment are the same as those of embodiment 1.
Example 3
Example 3 of a biochemical tank for sewage treatment differs from example 1 in that the volume of the tank 2 is further defined on the basis of example 1 in that the volume of the tank 2 is larger than the product of the instantaneous flow rate of the water inlet 202 and the time for sewage to flow from the water inlet 202 to the second water outlet 201. In order to allow the sewage to stay in the tank 2 for a sufficient time, it is necessary to determine the volume of the tank 2 according to the time required for the sewage to flow from the water inlet 202 to the second water outlet 201, that is, the time for the sewage to stay in the tank 2 multiplied by the instantaneous flow rate of the water inlet 202, so that the coagulation effect of the sewage and the dephosphorizing agent mixture is maximized.
In this embodiment, the trench box 2 has a size of 15m x 2m.
The remaining features and operation principle of the present embodiment are the same as those of embodiment 1.
Example 4
An embodiment 4 of a biochemical tank for sewage treatment comprises a tank body 1, wherein a first water outlet 101 of the tank body 1 is positioned on one side plate of the tank body 1 and is close to the other adjacent side plate, the two side plates are a first side plate 102 and a second side plate 103 respectively, then the shape of a canal box 2 can be set up by arranging a baffle 404 parallel to the first side plate 102 in the biochemical tank, one end of the baffle 404 is connected with the second side plate 103, and finally, two mutually connected side plates of the biochemical tank form a cavity and the cavity is provided with a water inlet 202 communicated with the tank body 1, and the cavity is the canal box 2. Baffle 404 and the curb plate parallel with baffle 404 add roof 405 on baffle 404, force (forcing) pump 3 installs on roof 405, and force (forcing) pump 3 goes out the water end and is connected with outlet pipe 4, and force (forcing) pump 3 advances water inlet pipe 5 that the water end is connected, and outlet pipe 4 passes the roof and its outlet port 403 is located water inlet 202 department.
Wherein, the water outlet pipe 4 comprises a first water outlet branch pipe 401 and a second water outlet branch pipe 402, which are respectively close to a baffle 404 and a side plate of the tank body 1. The mixed liquid containing the dephosphorizing agent flows out from the water outlet ports 403 positioned on two opposite sides of the water inlet 202 to be mixed with sewage, so that the uniform mixing effect is better, and the situation that more dephosphorizing agent is only contained in the sewage near the water outlet ports 403 or the sewage near the water outlet ports 403 is only contained in the sewage is avoided.
Specifically, the water inlet pipe 5 is provided with an ejector 6, and the ejector 6 is used for mixing water and the dephosphorizing agent. The jet means 6 is able to better mix the medicament and the water flow. The suction chamber of the jet device 6 is connected with a medicament supply pipe, the nozzle is connected with a water supply pipe, the outlet of the diffusion section is connected with a water inlet pipe, and the dephosphorization agent and the water are mixed in the jet device 6 and then flow to the booster pump 3 through the water inlet pipe 5.
The axial direction of the outlet port 403 is perpendicular to the orientation of the inlet port 202. If the flow direction of the mixed solution is parallel to the flow direction of the sewage, the sewage at the outlet port 403 can be mixed with the dephosphorizing agent, and the mixing effect is not good enough. The flowing direction of the mixed solution is perpendicular to the flowing direction of the sewage, the mixed solution flows from two sides of the sewage to the center of the sewage, which is equivalent to the cross section through which the sewage can flow, and the sewage passing through the water inlet 202 can be mixed with the mixed solution as much as possible, so that the coagulation effect of the sewage and the dephosphorizing agent is better. The water outlet ports 403 are equidistantly distributed along the vertical direction of the water inlet 202, and the dephosphorization agent mixed solution can better cover the position of the water inlet 202, so that the mixing effect with sewage is better.
The working principle or workflow of the present embodiment: the sewage in biochemical pond needs to flow into canal 2 from water inlet 202, then flow to canal 2's terminal, just flow out to the MBR membrane pond after passing through first delivery port 101, when sewage passes through water inlet 202, add the dephosphorization agent to inlet tube 5 in mix with water, then spout the mixed liquor after the pressurization from outlet port 403 through the effect of force (forcing) pump 3 with the sewage mix through water inlet 202, the mixed liquor after the pressurization can comparatively evenly spray into sewage, sewage and medicament carry out high-speed mixing in canal 2 simultaneously, improve the coagulation effect of sewage and dephosphorization agent, after having improved the utilization ratio of dephosphorization agent, even the dephosphorization agent of throwing into is less, also can ensure that out water total phosphorus discharges up to standard.
The beneficial effects of this embodiment are: through setting up canal 2 in biochemical pond, spout into the phosphorus removal agent mixed solution to sewage in the water inlet 202 department of canal 2, let the sewage that passes through water inlet 202 can mix with phosphorus removal agent mixed solution better, improve the coagulation effect of sewage and phosphorus removal agent, let the utilization ratio of phosphorus removal agent obtain improving, realize the dose reduction of the phosphorus removal agent of instant throwing, also can ensure out water total phosphorus emission up to standard, reduce the input cost of phosphorus removal agent.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The biochemical pond for sewage treatment comprises a pond body (1), wherein the pond body (1) is provided with a first water outlet (101), and is characterized by further comprising a medicament adding assembly; a canal box (2) is arranged in the pool body (1) and positioned at the first water outlet (101), and the canal box (2) is provided with a second water outlet (201) communicated with the first water outlet (101) and a water inlet (202) communicated with the pool body (1); the medicament adding assembly comprises a pressurizing pump (3) arranged on the canal box (2), a water outlet pipe (4) connected with the water outlet end of the pressurizing pump (3) and a water inlet pipe (5) connected with the water inlet end of the pressurizing pump (3), and a water outlet port (403) of the water outlet pipe (4) is positioned at the water inlet (202).
2. A biochemical tank for sewage treatment according to claim 1, characterized in that the water inlet pipe (5) is provided with an ejector (6), the ejector (6) being used for mixing water and a dephosphorizing agent.
3. A biochemical tank for sewage treatment according to claim 1, wherein said water outlet pipe (4) comprises a first water outlet branch pipe (401) and a second water outlet branch pipe (402) respectively located at opposite sides of said water inlet (202), said first water outlet branch pipe (401) and said second water outlet branch pipe (402) each being provided with a number of said water outlet ports (403).
4. A biochemical pond for sewage treatment according to claim 3, characterized in that the water outlet ports (403) are each provided with a pressurized spray head.
5. A biochemical tank for sewage treatment according to claim 3, characterized in that the axial direction of the water outlet port (403) is perpendicular to the orientation of the water inlet (202).
6. A biochemical tank for sewage treatment according to claim 3, characterized in that said water outlet ports (403) are equally distributed along the vertical direction of said water inlet (202).
7. A biochemical tank for sewage treatment according to claim 1, characterized in that the height of the canal tank (2) is not less than the height of the biochemical tank, and the pressurizing pump (3) is installed at the top of the canal tank (2).
8. A biochemical tank for sewage treatment according to claim 1, characterized in that said water inlet (202) and said second water outlet (201) are located at the head and tail ends of said canal box (2), respectively.
9. A biochemical tank for sewage treatment according to claim 8, characterized in that said water inlet (202) and said second water outlet (201) are oriented perpendicular to each other.
10. A biochemical tank for sewage treatment according to claim 8, characterized in that the volume of the trench box (2) is larger than the product of the instantaneous flow of the water inlet (202) and the time of sewage flow from the water inlet (202) to the second water outlet (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223395348.4U CN219314682U (en) | 2022-12-14 | 2022-12-14 | Biochemical pool for sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223395348.4U CN219314682U (en) | 2022-12-14 | 2022-12-14 | Biochemical pool for sewage treatment |
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| Publication Number | Publication Date |
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| CN219314682U true CN219314682U (en) | 2023-07-07 |
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| CN202223395348.4U Active CN219314682U (en) | 2022-12-14 | 2022-12-14 | Biochemical pool for sewage treatment |
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| CN (1) | CN219314682U (en) |
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- 2022-12-14 CN CN202223395348.4U patent/CN219314682U/en active Active
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