CN214167482U - Novel sewage treatment equipment capable of realizing solid-liquid separation - Google Patents
Novel sewage treatment equipment capable of realizing solid-liquid separation Download PDFInfo
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- CN214167482U CN214167482U CN202120013412.4U CN202120013412U CN214167482U CN 214167482 U CN214167482 U CN 214167482U CN 202120013412 U CN202120013412 U CN 202120013412U CN 214167482 U CN214167482 U CN 214167482U
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Abstract
The utility model discloses a novel sewage treatment device for realizing solid-liquid separation, which comprises a biological multiplication area, a first packing area, a second packing area, an air blower and a reflux pump; the incoming water flows through the biological multiplication area, the first filler area and the second filler area in sequence; one end of the reflux pump is connected with a water outlet of the second packing area and is used for refluxing part of water, the other end of the reflux pump is connected with a water inlet of the biological multiplication area, and the air blower is communicated with the second packing area and is used for aerating the second packing area; the biological multiplication area is used for carrying out denitrification treatment, the first filler area is used for intercepting suspended matters in the sewage, and the second filler area is used for converting the residual ammonia nitrogen in the sewage into nitrate nitrogen. The novel sewage treatment equipment for realizing solid-liquid separation aims to solve the problem that the existing sewage treatment equipment is poor in stability when a secondary sedimentation tank is adopted; the membrane separation has the problems of high investment and operation cost and complex operation and maintenance.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, concretely relates to realize solid-liquid separation's novel sewage treatment device.
Background
The sludge-water separation process conventionally adopted in the sewage treatment industry in the current market is a secondary sedimentation tank and a membrane, the secondary sedimentation tank is used for sludge-water separation, so that mixed liquor is clarified and eliminated, sludge is concentrated, and the separated sludge is returned to a biological treatment section, and the quality of the effect directly influences the quality of effluent and the concentration of returned sludge. Because the precipitation and concentration effects are poor, the activated sludge suspended matters are increased in the effluent, so that the BOD mass concentration of the effluent is increased; meanwhile, the concentration of the returned sludge is reduced, so that the concentration of mixed liquid in the aeration tank is reduced, and the purification effect is influenced.
The membrane process has the following problems: the energy consumption is high, and in order to maintain the normal operation of the membrane system, large aeration is often needed, so that the operation cost of the whole system is high; the operation and maintenance are complex, the requirement on personnel quality is high, the membrane system needs to be maintained and cleaned regularly to ensure the flux of the membrane system, and professional personnel are often needed to maintain the membrane system; the investment cost is higher, and the investment cost of the membrane system is higher than that of the conventional sewage treatment method, so the investment cost of the sewage treatment equipment adopting the membrane process is often higher than that of the sewage treatment equipment adopting other technologies; the depreciation cost is high, the longest quality guarantee period of the MBR membrane in the current market is 3 years, the service life of the domestic membrane is usually less than 2 years, and even 1 year, the domestic membrane needs to be replaced; the phosphorus removal effect is poor, the sludge treatment is difficult, a large amount of phosphorus removal agents are often required to be added, and the added phosphorus removal agents can bring a large amount of sludge; the denitrification cost is high.
The secondary sedimentation tank mainly utilizes gravity separation, and has the following problems: the quality of the effluent is unstable, and the problem of mud leakage often exists; the influence of climate is large, and the separation effect can be influenced by different climates; large floor space, lower gravity separation load, and larger floor space.
In view of the above, it is highly desirable to provide a novel sewage treatment apparatus for realizing solid-liquid separation to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model solves the technical problem that the prior sewage treatment equipment has poor stability when adopting a secondary sedimentation tank; the membrane separation has high investment and operation cost and complex operation and maintenance.
(II) technical scheme
The utility model provides a novel sewage treatment device for realizing solid-liquid separation, which comprises a biological multiplication area, a first packing area, a second packing area, an air blower and a reflux pump; the incoming water flows through the biological multiplication zone, the first packing zone and the second packing zone in sequence; one end of the reflux pump is connected to a water outlet of the second packing area and is used for refluxing part of water, the other end of the reflux pump is connected to a water inlet of the biological multiplication area, and the air blower is communicated with the second packing area and is used for aerating the second packing area; the biological multiplication area is used for carrying out denitrification treatment, the first filler area is used for intercepting suspended matters in sewage, and the second filler area is used for converting residual ammonia nitrogen in water into nitrate nitrogen.
Furthermore, the first filler area is filled with a first filler, the second filler area is filled with a second filler, and both the first filler and the second filler adopt stacked fillers.
Further, the first filler is a treated mineral filler.
Further, the second filler is a treated mineral filler.
Furthermore, the biological multiplication area is communicated with the first packing area through a flow guide well, one end of the flow guide well is communicated with the upper end of the biological multiplication area, and the other end of the flow guide well is communicated with the lower end of the first packing area.
Further, the first packing area is communicated with the second packing area through a communicating pipe, one end of the communicating pipe is communicated with the upper end of the first packing area, and the other end of the communicating pipe is communicated with the lower end of the second packing area.
Further, the water outlet of the second filler area is arranged at the upper end of the second filler area.
Further, the air blower is arranged at the lower end of the second filling material area.
(III) advantageous effects
The utility model provides a novel sewage treatment device for realizing solid-liquid separation, which comprises a biological multiplication area, a first filler area, a second filler area, a blower and a reflux pump; the incoming water flows through the biological multiplication area, the first filler area and the second filler area in sequence; one end of the reflux pump is connected with a water outlet of the second packing area and is used for refluxing part of water, the other end of the reflux pump is connected with a water inlet of the biological multiplication area, and the air blower is communicated with the second packing area and is used for aerating the second packing area; the biological multiplication area is used for carrying out denitrification treatment, the first filler area is used for intercepting suspended matters in the sewage, and the second filler area is used for converting the residual ammonia nitrogen in the sewage into nitrate nitrogen. The sewage treatment equipment maintains biological sludge in a biochemical system by using a mode of intercepting suspended matters by using the filler, and intercepts the sludge in the system by using a two-stage filler area, a one-stage biological multiplication area and a special control system. By doing so, the sludge concentration in the system can be maintained, the sludge concentration in the aerobic zone can be reduced, and the aims of canceling the secondary sedimentation tank and reducing the sludge yield are finally fulfilled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a novel sewage treatment device for realizing solid-liquid separation provided by the embodiment of the utility model.
In the figure:
1-a bio-doubling zone; 2-a first packing region; 201-a first filler; 3-a second packing region; 301-a second filler; 4-a blower; 5-a reflux pump; 6-diversion well; 7-communicating pipe.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention, but are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, substitutions and improvements in the parts, components and connections without departing from the spirit of the invention.
According to the embodiment of the utility model, a novel sewage treatment device for realizing solid-liquid separation is provided, as shown in fig. 1, comprising a biological multiplication area 1, a first filler area 2, a second filler area 3, a blower 4 and a reflux pump 5; the incoming water flows through the biological multiplication area 1, the first packing area 2 and the second packing area 3 in sequence; one end of the reflux pump 5 is connected with a water outlet of the second packing area 3 and is used for refluxing part of the water, the other end of the reflux pump 5 is connected with a water inlet of the biological multiplication area 1, and the blower 4 is communicated with the second packing area 3 and is used for aerating the second packing area 3; the biological multiplication area 1 is used for carrying out denitrification treatment, the first filler area 2 is used for intercepting suspended matters in sewage, and the second filler area 3 is used for converting residual ammonia nitrogen in water into nitrate nitrogen.
In the above embodiment, the sewage treatment device uses the filler as a mode of intercepting suspended matters to maintain biological sludge in a biochemical system, and uses a two-stage filler area, a one-stage biological multiplication area and a special control system to intercept the sludge in the system. By doing so, the sludge concentration in the system can be maintained, the sludge concentration in the aerobic zone can be reduced, and the aims of canceling the secondary sedimentation tank and reducing the sludge yield are finally fulfilled.
Specifically, the incoming water and the returned sewage first enter a biological multiplication zone 1 where denitrification reaction occurs, which is designed to have a special structure to achieve biological multiplication effect, the sludge concentration of an anoxic zone under the condition of returning only nitrified liquid is maintained, and then, the incoming water and the returned sewage automatically flow to a first packing zone 2, packing is provided in the first packing zone 2, where further denitrification is performed while retaining suspended matter in the water, the effluent of the first packing zone 2 automatically flows to a second packing zone 3, aeration is performed in the second packing zone 3 by a blower 4 to convert the remaining ammonia nitrogen in the water into nitrate nitrogen and oxidize the remaining COD (Chemical Oxygen Demand) into carbon dioxide, and the nitrate nitrogen in the water is returned to the first packing zone 1 by a return pump 5 to perform denitrification by microorganisms.
The structures of the biological multiplication region 1, the first packing region 2 and the second packing region 3 are conventional structures in the field, which are not described herein again, and both the biological multiplication region 1 and the first packing region 2 are anaerobic/anoxic regions, and the second packing region 3 is an aerobic region.
In some alternative embodiments, as shown in fig. 1, the first packing region 2 is filled with a first packing 201, the second packing region 3 is filled with a second packing 301, and both the first packing 201 and the second packing 301 adopt stacked packing.
In the above embodiment, the first filler 201 and the second filler 301 may be a modified filler or an unmodified filler, and are not particularly limited herein. The particle size of the first filler 201 is larger than that of the second filler 301; the first filler 201 is mainly used for intercepting sludge (flocculent structure formed by microorganism aggregation) in the sewage in the first filler zone 2, and the sludge is easier to intercept by the first filler 201 with large particle size due to higher sludge amount in the zone.
The amount of sludge entering the second filler zone 3 after being intercepted by the first filler zone 2 is obviously reduced, so that the second filler 301 with small particle size can more easily adsorb microorganisms in order to intercept the microorganisms in the sewage.
In some alternative embodiments, the first filler 201 is a treated mineral filler. The particle size of the first filler 201 is not particularly limited, but preferably, the particle size of the first filler 201 is 8 to 10mm, and the first filler 201 is stacked and disposed in the first filler region 2.
In some alternative embodiments, the second filler 301 is a treated mineral filler. The particle size of the second filler 301 is not particularly limited, but the particle size of the second filler 301 is preferably 1 to 5mm, and the second filler 301 is stacked in the second filler zone 3.
In some alternative embodiments, as shown in fig. 1, the bio-multiplication region 1 is communicated with the first packing region 2 through a flow guiding well 6, one end of the flow guiding well 6 is communicated with the upper end of the bio-multiplication region 1, and the other end of the flow guiding well 6 is communicated with the lower end of the first packing region 2. The connection mode of the diversion well 6 is that the water level of the sewage entering the first filling area 2 is improved, and the sewage can slowly rise in the first filling area 2, so that the sewage can be fully contacted with the filling, and the interception effect on the sludge can be improved; meanwhile, the filler is used as a catalyst, so that the reaction rate of nitrate nitrogen and COD can be accelerated, and the filler is used for removing a large amount of COD.
In some optional embodiments, as shown in fig. 1, the first packing area 2 and the second packing area 3 are communicated through a communication pipe 7, one end of the communication pipe 7 is communicated with the upper end of the first packing area 2, and the other end of the communication pipe 7 is communicated with the lower end of the second packing area 3. The water level of the sewage entering the second filling area 3 can be increased slowly in the second filling area 3 by the connection mode of the communicating pipe 7, so that the sewage can be in full contact with the filling, and the interception effect on microorganisms in the sludge can be improved; meanwhile, microorganisms trapped on the filler react with ammonia nitrogen in the sewage to convert the microorganisms into nitrate nitrogen, so that the ammonia nitrogen in the sewage is removed.
In some alternative embodiments, as shown in fig. 1, the water outlet of the second packed region 3 is provided at its upper end. The water outlet is more favorable for the full contact of sewage and the filler, and improves various indexes of water outlet.
In some alternative embodiments, as shown in fig. 1, a blower 4 is provided at the lower end of the second packing region 3. The blower 4 is arranged in such a way that the density of the gas is less than that of the water, so that the air entering the second filling area 3 flows upwards from the bottom of the area, the growth of microorganisms attached to the filling is facilitated, and the removal of ammonia nitrogen is further improved.
In some alternative embodiments, the bottom of the bio-doubling zone 1 is provided with a sludge discharge hole, and the sludge discharge hole is covered with a detachable hole plug. The sludge discharge holes are used for discharging sludge generated in the area due to the fact that competition among high-concentration microorganisms is eliminated internally, the hole plugs are used for plugging the sludge discharge holes at ordinary times, and when the sludge in the area is found to be large in yield, sludge is discharged timely.
The embodiment is a Beijing white puddle sewage treatment station, the treatment scale is 20 tons/day, and the specific treatment process comprises the following steps:
the second filling area 3, the first filling area 2 and the biological multiplication area 1 are filled in sequence, and then water feeding is stopped;
starting the blower 4 to aerate the second filler zone 3, converting the residual ammonia nitrogen in the water into nitrate nitrogen, and oxidizing the residual COD into carbon dioxide;
starting a reflux pump 5 to reflux the effluent of the second filler zone 3 to the biological multiplication zone 1 for denitrification treatment;
after the continuous operation is carried out for 7 days, part of the effluent of the second packing area 3 is directly discharged;
after water is continuously fed for 15 hours, stopping feeding water and stopping discharging part of discharged water directly;
continuously operating for 7 days;
continuously feeding water and directly discharging part of the discharged water.
The following test methods are adopted for testing various indexes in the effluent:
testing total nitrogen by adopting a national standard method;
testing ammonia nitrogen by adopting a national standard method;
testing total phosphorus by adopting a national standard method;
COD is tested by adopting a Hash instrument method and a national standard method, the national standard is compared with the Hash instrument in the early stage, and after the correlation is found, the analysis is carried out by using the Hash instrument.
The embodiment of the utility model provides a realize solid-liquid separation's novel sewage treatment device has following advantage:
the occupied area is saved, the occupied area of a secondary sedimentation tank of the sewage treatment system is large, and a large amount of occupied area can be saved by canceling the sedimentation tank;
the operation is more stable, and the filtered water does not have the conditions of mud leakage and the like, so the water quality of the discharged water is more stable;
the subsequent receiving water body is more benefited, and the outlet water of the filter tank contains more dissolved oxygen, so that the subsequent receiving water body is more benefited to be protected;
the sludge yield is reduced, the subsequent treatment cost is reduced, a large amount of COD in the system is used for denitrification and consumption of an anaerobic part, and an aerobic part is mainly used for removing ammonia nitrogen, so the sludge yield is very low, and the sludge yield is also reduced greatly;
the filler in the second filler area can cut air bubbles in water to improve oxygen transfer efficiency, so that the aerobic area does not need micropore aeration, the aeration does not need micropore aeration, and an aeration system is free of maintenance;
and after the system fails, the system is easier to recover.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (8)
1. A novel sewage treatment device for realizing solid-liquid separation is characterized by comprising a biological multiplication area (1), a first packing area (2), a second packing area (3), a blower (4) and a reflux pump (5); the incoming water flows through the biological multiplication zone (1), the first packing zone (2) and the second packing zone (3) in sequence; one end of the reflux pump (5) is connected to a water outlet of the second packing region (3) and is used for refluxing part of the discharged water, the other end of the reflux pump (5) is connected to a water inlet of the biological multiplication region (1), and the air blower (4) is communicated with the second packing region (3) and is used for aerating the second packing region (3); the biological multiplication area (1) is used for carrying out denitrification treatment, the first filler area (2) is used for intercepting suspended matters in sewage, and the second filler area (3) is used for converting residual ammonia nitrogen in water into nitrate nitrogen.
2. The novel sewage treatment equipment for realizing solid-liquid separation according to claim 1, wherein the first packing area (2) is filled with a first packing (201), the second packing area (3) is filled with a second packing (301), and the first packing (201) and the second packing (301) are both stacked packing.
3. The novel sewage treatment apparatus for realizing solid-liquid separation according to claim 2, wherein said first filler (201) is a treated mineral filler.
4. The novel sewage treatment apparatus for realizing solid-liquid separation according to claim 2, wherein said second filler (301) is a treated mineral filler.
5. The novel sewage treatment equipment for realizing solid-liquid separation according to claim 1, wherein the biological multiplication zone (1) is communicated with the first packing zone (2) through a diversion well (6), one end of the diversion well (6) is communicated with the upper end of the biological multiplication zone (1), and the other end of the diversion well (6) is communicated with the lower end of the first packing zone (2).
6. The novel sewage treatment device for realizing solid-liquid separation according to claim 1, wherein the first packing area (2) is communicated with the second packing area (3) through a communicating pipe (7), one end of the communicating pipe (7) is communicated with the upper end of the first packing area (2), and the other end of the communicating pipe (7) is communicated with the lower end of the second packing area (3).
7. The novel sewage treatment equipment for realizing solid-liquid separation according to claim 1, wherein the water outlet of the second packing area (3) is arranged at the upper end thereof.
8. The novel sewage treatment apparatus for realizing solid-liquid separation according to claim 1, wherein said blower (4) is provided at the lower end of said second packing section (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120013412.4U CN214167482U (en) | 2021-01-05 | 2021-01-05 | Novel sewage treatment equipment capable of realizing solid-liquid separation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120013412.4U CN214167482U (en) | 2021-01-05 | 2021-01-05 | Novel sewage treatment equipment capable of realizing solid-liquid separation |
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| CN214167482U true CN214167482U (en) | 2021-09-10 |
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| CN202120013412.4U Active CN214167482U (en) | 2021-01-05 | 2021-01-05 | Novel sewage treatment equipment capable of realizing solid-liquid separation |
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