CN210085065U - Mariculture effluent treatment plant - Google Patents
Mariculture effluent treatment plant Download PDFInfo
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- CN210085065U CN210085065U CN201920172501.6U CN201920172501U CN210085065U CN 210085065 U CN210085065 U CN 210085065U CN 201920172501 U CN201920172501 U CN 201920172501U CN 210085065 U CN210085065 U CN 210085065U
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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
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Abstract
The application discloses mariculture effluent treatment plant, processing apparatus includes: the biological aerated filter comprises a first water inlet and a first water outlet, and wastewater to be treated enters the treatment device through the first water inlet, wherein the wastewater to be treated meets preset conditions; the membrane bioreactor comprises a second water inlet and a second water outlet, and the first water outlet is connected with the second water inlet through a first pipeline; the first aeration component is used for aerating the biological aerated filter; and the second aeration component is used for providing air and aerobic environment for the membrane bioreactor. Through the mode, this application can improve mariculture waste water treatment effect.
Description
Technical Field
The application relates to the technical field of wastewater treatment, in particular to a mariculture wastewater treatment device.
Background
China is a big seawater aquaculture country, the total yield of Chinese aquatic products accounts for more than 30% of the total world yield in recent years, and the total aquaculture yield reaches the leading position in the world. The large-scale and industrialized development of the marine aquaculture inevitably brings a large amount of wastewater discharge and treatment problems, aggravates the pollution load of aquaculture water and adjacent sea areas, causes serious water eutrophication, destroys the offshore ecological balance, and threatens the sustainable development of marine environmental quality and marine fishery resource development industry.
The inventor of this application discovers at long-term research in-process, and current mariculture effluent treatment plant exists that the cost is expensive, and the waste water treatment effect is unsatisfactory, goes out the water quality poor, and waste water biodegradability is not high in the processing procedure, short service life scheduling problem.
SUMMERY OF THE UTILITY MODEL
The main technical problem who solves of this application provides a mariculture effluent treatment plant, can improve mariculture effluent treatment effect.
In order to solve the technical problem, the application adopts a technical scheme that: provided is a mariculture wastewater treatment device, including: the biological aerated filter comprises a first water inlet and a first water outlet, and wastewater to be treated enters the treatment device through the first water inlet, wherein the wastewater to be treated meets preset conditions; the membrane bioreactor comprises a second water inlet and a second water outlet, and the first water outlet is connected with the second water inlet through a first pipeline; the first aeration component is used for aerating the biological aerated filter; and the second aeration component is used for providing air and aerobic environment for the membrane bioreactor.
Wherein, the biological aerated filter comprises: a first section of aeration biological filter and a second section of aeration biological filter which are connected in series; and the first lifting pump is positioned between the first section of biological aerated filter and the second section of biological aerated filter and is used for lifting the effluent of the first section of biological aerated filter into the second section of biological aerated filter.
Wherein the first aeration assembly comprises: a first blower; the first air inlet pipe is connected with the first air blower and is positioned outside the first section of biological aerated filter and the second section of biological aerated filter; the second air inlet pipe is connected with the first air blower and is positioned outside the first section of biological aerated filter and the second section of biological aerated filter; the first aeration pipe is connected with the first air inlet pipe, a plurality of first aeration holes are formed in the first aeration pipe, and the first aeration pipe is positioned in the first section of biological aerated filter; and the second aeration pipe is connected with the second air inlet pipe, a plurality of second aeration holes are formed in the second aeration pipe, and the second aeration pipe is positioned in the second section of biological aerated filter.
Wherein the second aeration assembly comprises: a second blower; the third air inlet pipe is connected with the second air blower and is positioned outside the membrane bioreactor; and the third aeration pipe is connected with the third air inlet pipe, a plurality of third aeration holes are formed in the third aeration pipe, and the third aeration pipe is positioned in the membrane bioreactor.
Wherein the processing device further comprises: the grating pool comprises a third water inlet and a third water outlet; the hydrolysis acidification pool comprises a fourth water inlet and a fourth water outlet, the third water outlet is connected with the fourth water inlet through a second pipeline, and the effluent of the fourth water outlet meets the preset condition; and the second lifting pump is positioned between the fourth water outlet of the hydrolysis acidification tank and the first water inlet of the biological aerated filter and is used for lifting the outlet water of the hydrolysis acidification tank into the biological aerated filter.
Wherein the preset conditions met by the wastewater to be treated are as follows: BOD/COD is 0.45-0.55.
Wherein the processing device further comprises: and the third lifting pump is positioned between the third water outlet of the grating tank and the fourth water inlet of the hydrolysis acidification tank and is used for lifting the outlet water of the grating tank into the hydrolysis acidification tank.
Wherein the membrane bioreactor comprises at least one of an immersed membrane bioreactor and a semi-immersed membrane bioreactor.
Wherein, the biological aerated filter is a carbon oxidation type biological aerated filter.
Wherein the processing device further comprises: a first valve located on the first conduit; the second valve is positioned between the first aeration component and the biological aerated filter; and the third valve is positioned between the second aeration component and the membrane bioreactor.
The beneficial effect of this application is: being different from the situation of the prior art, the mariculture wastewater treatment device provided by the application comprises: the aeration biological filter comprises an aeration biological filter, a membrane bioreactor, a first aeration component and a second aeration component, wherein the first aeration component is used for aerating the aeration biological filter. The biological aerated filter contains aerobic organisms, the concentration of the aerobic organisms in the biological aerated filter is increased through the action of the first aeration component, the treatment effect is further increased, the biodegradability of the effluent of the biological aerated filter is increased, and the influence of the salinity effect of seawater can be reduced through the increase of the concentration of the aerobic organisms in the biological aerated filter. In addition, due to the improvement of the biodegradability of the effluent in the biological aerated filter and the action of the second aeration component, the treatment pressure of a subsequent membrane bioreactor can be reduced, the treatment effect is enhanced, and the effluent quality is further improved. The treatment device provided by the application is simpler, the manufacturing cost is relatively cheap, the wastewater treatment effect is better, the effluent quality and the biodegradability are improved, and the service life is longer.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural view of an embodiment of a mariculture wastewater treatment apparatus according to the present application;
FIG. 2 is a schematic structural view of another embodiment of the wastewater treatment apparatus for mariculture according to the present application
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a mariculture wastewater treatment device according to the present application, wherein the treatment device 1 includes: the aeration biological filter 10, the membrane bioreactor 12, the first aeration component 14 and the second aeration component 16.
Specifically, the biological aerated filter 10 comprises a first water inlet a and a first water outlet B, and wastewater to be treated enters through the first water inlet a, wherein the wastewater to be treated meets a preset condition; in the present embodiment, the preset condition to be satisfied by the wastewater to be treated is that the chemical oxygen demand/chemical oxygen demand BOD/COD is 0.45 to 0.55 (e.g., 0.45, 0.50, 0.55, etc.). The height between the first water inlet a and the horizontal plane may be greater or less than the height between the first water outlet B and the horizontal plane. The biological aerated filter 10 is filled with a granular filler with a high specific surface area for the growth of microorganisms (such as aerobic organisms), wastewater to be treated flows through the filler from top to bottom or from top to bottom, organic matters in the wastewater to be treated and the microorganisms on the surface of the filler are degraded through biochemical reaction, and the filler also plays a role in physical filtration and interception. The biological aerated filter 10 can effectively reduce suspended substances SS, chemical oxygen demand COD, biochemical oxygen demand BOD, ammonia nitrogen and the like in the wastewater to be treated. In one application scenario, the biological aerated filter 10 may be a carbon oxidation type biological aerated filter, and of course, in other application scenarios, the biological aerated filter 10 may also be of other types, which is not limited in this application.
The membrane bioreactor 12 comprises a second water inlet C and a second water outlet D, and the first water outlet B is connected with the second water inlet C through a first pipeline 18; in this embodiment, the height between the second inlet C and the horizontal plane may be greater than or less than the height between the second outlet D and the horizontal plane. The membrane bioreactor 12 is a water treatment technology combining a high efficiency membrane separation technology and an activated sludge process, and in this embodiment, the membrane bioreactor 12 may include at least one of a submerged membrane bioreactor and a semi-submerged membrane bioreactor.
The first aeration component 14 is used for aerating the biological aerated filter 10, and the second aeration component 16 is used for providing air and aerobic environment for the membrane bioreactor 12.
In this embodiment, the biological aerated filter 10 contains aerobic organisms, and the concentration of the aerobic organisms in the biological aerated filter 10 is increased by the action of the first aeration assembly 14, so that the treatment effect is increased, the biodegradability of the effluent of the biological aerated filter 10 is increased, and the influence of the salinity effect of seawater can be reduced by increasing the concentration of the aerobic organisms in the biological aerated filter 10. In addition, due to the improvement of the biodegradability of the effluent in the biological aerated filter 10 and the action of the second aeration component 16, the treatment pressure of the subsequent membrane bioreactor 12 can be reduced, the treatment effect is enhanced, and the effluent quality is further improved. The application provides a processing apparatus 1 is comparatively simple, and the cost is cheap relatively, and waste water treatment is better, goes out water quality and biodegradability and improves, and life is also longer.
In one embodiment, the processing apparatus 1 provided herein further comprises: a first valve K1 located on the first conduit 18; a second valve K2 located between the first aeration assembly 14 and the biological aerated filter 10; and the third valve K3 is positioned between the second aeration component 16 and the membrane bioreactor 12.
In yet another embodiment, the biological aerated filter 10 provided by the present application can be as shown in fig. 1, and of course, the biological aerated filter 10a can also be designed as shown in fig. 2, where the biological aerated filter 10a in fig. 2 comprises: a first section of biological aerated filter 100a and a second section of biological aerated filter 102a which are connected in series, wherein the first section of biological aerated filter 100a is designed in the same way as the second section of biological aerated filter 102 a; and a first lifting pump 104a positioned between the first stage biological aerated filter 100a and the second stage biological aerated filter 102a and used for lifting the effluent of the first stage biological aerated filter 100a into the second stage biological aerated filter 102 a. The first stage bological aerated filter 100a and the second bological aerated filter 102a connected in series in this embodiment are designed to effectively reduce the cost and improve the safety.
In one application scenario, continuing with reference to fig. 2, a first aeration assembly 14a is provided herein that includes:
And a first air inlet pipe 142a connected to the first blower 140a (for example, connected to an air outlet of the first blower 140 a) and located outside the first-stage biological aerated filter 100a and the second-stage biological aerated filter 102 a. In the present embodiment, the first intake pipe 142a may be provided with an opening and closing element such as the fourth valve K4.
And a second air inlet pipe 144a connected to the first blower 140a (for example, connected to another air outlet of the first blower 140 a) and located outside the first-stage biological aerated filter 100a and the second-stage biological aerated filter 102 a. In the present embodiment, the second intake pipe 144a may be provided with an opening and closing element such as the fifth valve K5.
A first aeration pipe (not shown) connected to the first air inlet pipe 142a, the first aeration pipe having a plurality of first aeration holes, the first aeration pipe being located in the first biological aerated filter 100 a; in this embodiment, the number of the first aeration pipes may be at least one, and the first aeration pipes may be located at the top, middle or bottom of the first stage of the biological aerated filter 100a, for example, when the water flow direction in the first stage of the biological aerated filter 100a is from top to bottom, the first aeration pipes may be located at the bottom of the first stage of the biological aerated filter 100 a.
And a second aeration pipe (not shown) connected to the second air inlet pipe 144a, wherein the second aeration pipe is provided with a plurality of second aeration holes, and the second aeration pipe is located in the second biological aerated filter 102 a. In this embodiment, the number of the second aeration pipes may be at least one, and the second aeration pipes may be located at the top, middle or bottom of the second biological aerated filter 102a, for example, when the water flow direction in the second biological aerated filter 102a is from top to bottom, the second aeration pipes may be located at the bottom of the second biological aerated filter 102 a.
Of course, in other application scenarios, the structure of the first aeration assembly 14a may be other, for example, the first aeration assembly 14a may also include two third air blowers, the third air blower may include only one air outlet, and the two third air blowers are respectively connected to the first air inlet pipe 142a and the second air inlet pipe 144a, which is not limited in this application.
In yet another embodiment, with continued reference to fig. 1 or 2, a second aeration assembly 16 is provided herein that includes:
the second blower 160, in this embodiment, the second blower 160 may include only one air outlet.
A third air inlet pipe 162 connected with the second blower 160, the third air inlet pipe 162 being located outside the membrane bioreactor 12; in addition, in the present embodiment, the third valve K3 may be disposed on the third air inlet pipe 162.
And a third aeration pipe (not shown) connected to the third air inlet pipe 162, the third aeration pipe having a plurality of third aeration holes, the third aeration pipe being located in the membrane bioreactor 12. In this embodiment, the number of the third aeration pipes may be at least one, and the third aeration pipes may be located at the top, middle or bottom of the membrane bioreactor 12, for example, when the water flow direction in the membrane bioreactor 12 is from top to bottom, the third aeration pipes may be located at the bottom of the membrane bioreactor 12.
It should be noted that, in this embodiment, the wastewater to be treated entering the biological aerated filter 10 needs to meet a preset condition, so that the subsequent biological aerated filter 10 and the membrane bioreactor 12 have a better treatment effect; in some cases, the mariculture wastewater may not satisfy the preset condition, and therefore, the treatment apparatus 1 provided by the present application further includes a pretreatment module, which includes:
a grating tank 11 including a third inlet E and a third outlet F; the grating tank 11 acts as a filter screen and can retain most suspended substances and floating materials. In this embodiment, a pipe connected to the third water inlet E may be provided outside the grill pan 11, and a valve-type switching element may be provided on the pipe.
And the hydrolysis acidification pool 13 comprises a fourth water inlet G and a fourth water outlet H, the third water outlet F is connected with the fourth water inlet G through a second pipeline 15, and the water outlet of the fourth water outlet H meets the preset conditions. In this embodiment, the hydrolysis acidification tank 13 can hydrolyze insoluble organic substances into soluble organic substances under the action of a large amount of hydrolysis bacteria and acidification bacteria, so as to convert the macromolecular substances which are difficult to biodegrade into the micromolecular substances which are easy to biodegrade.
And the second lifting pump 17 is positioned between the fourth water outlet H of the hydrolysis acidification tank 13 and the first water inlet A of the biological aerated filter 10 and is used for lifting the outlet water of the hydrolysis acidification tank 13 into the biological aerated filter 10. In this embodiment, the pipe in which the second lift pump 17 is located may be further provided with a switching element similar to a valve.
In an application scenario, a height difference exists between the third water outlet F of the grating tank 11 and the fourth water inlet G of the hydrolysis acidification tank 13, and the outlet water of the third water outlet F of the grating tank 11 can automatically flow to the fourth water inlet G of the hydrolysis acidification tank 13 under the action of the height difference.
Of course, in other application scenarios, the processing apparatus 1 provided in the present application may further include: and the third lifting pump 19 is positioned between the third water outlet F of the grating tank 11 and the fourth water inlet G of the hydrolysis acidification tank 13 and is used for lifting the outlet water of the grating tank 11 into the hydrolysis acidification tank 13. The pipe in which third lift pump 19 is located may also be provided with a valve-like switching element.
In other embodiments, the processing device provided by the present application may further include other common elements, such as a flow meter, etc., which are not described in more detail herein.
The treatment apparatus 1 provided in the present application will be further described below by taking an example of daily treatment of 5 tons of seawater shrimp culture wastewater. The parameters set by the respective units in the processing apparatus 1 in this embodiment are as follows:
a grid pool 11: mechanical fine grids and a group of grids are adopted, the depth of water in front of the grids is 0.1m, the width between grid bars is 0.01m, the inclination angle of the grids is 60 degrees, and the number of the grid bars is 76.
Hydrolysis acidification 13: the volume is 0.84m3The water inflow rate is 210L/h, and the wastewater stays in the hydrolysis acidification tank 13 for 4h and then is discharged;
the biological aerated filter 10: the total height of the packing layer is 3.14m, and the total retention time of the wastewater in the biological aerated filter 10 is 76 min; the first blower 140 of the first aeration module 14 supplies the oxygen demand for removing BOD in the sewage and the oxygen demand for partial nitrification of ammonia, and the total aeration amount supplied by the first blower 140 to the biological aerated filter 10 is 49953m3/d；
The membrane bioreactor 12: the activated sludge concentration is designed to be 6000mg/L, the sludge load is 0.08KgBOD5/(KgMLSS d), the gas-water ratio is 20: 1-30: 1, and the retention time of the wastewater is 3 h.
The following table 1 is a water quality meter of effluent of the hydrolysis acidification tank, the following table 2 is a water quality meter of effluent of the aeration biological filter, and the following table 3 is a water quality meter of effluent of the membrane bioreactor.
Table 1: water quality meter for outlet water of hydrolytic acidification tank
| Item | BOD(mg/L) | TSS(kg/hm2) | Ammonia nitrogen (mg/L) | COD(mg/L) |
| Quality of inlet water | 240 | 2000 | 0.34 | 800 |
| Quality of effluent water | 300 | 1200 | 0.34 | 600 |
| Removal rate | 30％ | 40％ | 70％ | 25％ |
Table 2: effluent quality meter of aeration biological filter
| Item | BOD(mg/L) | TSS(kg/hm2) | Ammonia nitrogen (mg/L) | COD(mg/L) |
| Quality of inlet water | 300 | 1200 | 0.34 | 600 |
| Quality of effluent water | 90 | 360 | 0.17 | 120 |
| Removal rate | 70％ | 70％ | 50％ | 80％ |
Table 3: effluent quality meter of membrane bioreactor
| Item | BOD(mg/L) | TSS(kg/hm2) | Ammonia nitrogen (mg/L) | COD(mg/L) |
| Quality of inlet water | 90 | 360 | 0.17 | 120 |
| Yielding waterQuality of food | 0 | 18 | 0.0085 | 0 |
| Removal rate | 100％ | 95％ | 95％ | 100％ |
Can see through above-mentioned table 1-table 3 in the data, utilize the processing apparatus 1 that this application provided can effectively get rid of BOD, COD, TSS (total soluble solid), the volume of ammonia nitrogen in the mariculture waste water, the waste water treatment effect is ideal, goes out the water quality height.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A mariculture wastewater treatment device, characterized in that the treatment device comprises:
the biological aerated filter comprises a first water inlet and a first water outlet, and wastewater to be treated enters the treatment device through the first water inlet, wherein the wastewater to be treated meets preset conditions;
the membrane bioreactor comprises a second water inlet and a second water outlet, and the first water outlet is connected with the second water inlet through a first pipeline;
the first aeration component is used for aerating the biological aerated filter;
and the second aeration component is used for providing air and aerobic environment for the membrane bioreactor.
2. The treatment apparatus according to claim 1, wherein the biological aerated filter comprises:
a first section of aeration biological filter and a second section of aeration biological filter which are connected in series;
and the first lifting pump is positioned between the first section of biological aerated filter and the second section of biological aerated filter and is used for lifting the effluent of the first section of biological aerated filter into the second section of biological aerated filter.
3. A treatment device as claimed in claim 2, wherein the first aeration assembly comprises:
a first blower;
the first air inlet pipe is connected with the first air blower and is positioned outside the first section of biological aerated filter and the second section of biological aerated filter;
the second air inlet pipe is connected with the first air blower and is positioned outside the first section of biological aerated filter and the second section of biological aerated filter;
the first aeration pipe is connected with the first air inlet pipe, a plurality of first aeration holes are formed in the first aeration pipe, and the first aeration pipe is positioned in the first section of biological aerated filter;
and the second aeration pipe is connected with the second air inlet pipe, a plurality of second aeration holes are formed in the second aeration pipe, and the second aeration pipe is positioned in the second section of biological aerated filter.
4. The treatment apparatus of claim 1, wherein the second aeration assembly comprises:
a second blower;
the third air inlet pipe is connected with the second air blower and is positioned outside the membrane bioreactor;
and the third aeration pipe is connected with the third air inlet pipe, a plurality of third aeration holes are formed in the third aeration pipe, and the third aeration pipe is positioned in the membrane bioreactor.
5. The processing apparatus according to claim 1, characterized in that the processing apparatus further comprises:
the grating pool comprises a third water inlet and a third water outlet;
the hydrolysis acidification pool comprises a fourth water inlet and a fourth water outlet, the third water outlet is connected with the fourth water inlet through a second pipeline, and the effluent of the fourth water outlet meets the preset condition;
and the second lifting pump is positioned between the fourth water outlet of the hydrolysis acidification tank and the first water inlet of the biological aerated filter and is used for lifting the outlet water of the hydrolysis acidification tank into the biological aerated filter.
6. The processing apparatus according to claim 1 or 5,
the wastewater to be treated meets the following preset conditions: BOD/COD is 0.45-0.55.
7. The processing apparatus according to claim 5,
and a third lifting pump is further arranged between the third water outlet of the grating pool and the fourth water inlet of the hydrolysis acidification pool and is used for lifting the outlet water of the grating pool into the hydrolysis acidification pool.
8. The treatment apparatus of claim 1, wherein the membrane bioreactor comprises at least one of a submerged membrane bioreactor and a semi-submerged membrane bioreactor.
9. The treatment apparatus according to claim 1, wherein the biological aerated filter is a carbon oxidation type biological aerated filter.
10. The processing apparatus according to claim 1, characterized in that the processing apparatus further comprises:
a first valve located on the first conduit;
the second valve is positioned between the first aeration component and the biological aerated filter;
and the third valve is positioned between the second aeration component and the membrane bioreactor.
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| CN111675439A (en) * | 2020-06-19 | 2020-09-18 | 南京华创环境技术研究院有限公司 | High-efficient beasts and birds are bred effluent disposal system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111675439A (en) * | 2020-06-19 | 2020-09-18 | 南京华创环境技术研究院有限公司 | High-efficient beasts and birds are bred effluent disposal system |
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