CN112340810A - Low-consumption sewage treatment equipment and sewage treatment system - Google Patents
Low-consumption sewage treatment equipment and sewage treatment system Download PDFInfo
- Publication number
- CN112340810A CN112340810A CN202011243888.3A CN202011243888A CN112340810A CN 112340810 A CN112340810 A CN 112340810A CN 202011243888 A CN202011243888 A CN 202011243888A CN 112340810 A CN112340810 A CN 112340810A
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- Prior art keywords
- sewage treatment
- sludge
- membrane
- water
- aeration
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- 239000010865 sewage Substances 0.000 title claims abstract description 70
- 239000012528 membrane Substances 0.000 claims abstract description 60
- 239000010802 sludge Substances 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000005273 aeration Methods 0.000 claims abstract description 40
- 238000010992 reflux Methods 0.000 claims abstract description 26
- 238000005406 washing Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides low-consumption sewage treatment equipment which comprises a membrane area, a fan and a reflux pump, wherein a membrane component and an aeration pipeline are arranged in the membrane area, sewage in the membrane area is filtered by the membrane component to obtain treated water, the treated water flows out of the membrane area, the reflux pump pumps sludge in the membrane area into a sewage treatment area in front of the membrane area through a sludge reflux pipe, the fan supplies air to a sewage treatment pool through an air inlet pipe for aeration, the low-consumption sewage treatment equipment also comprises a plurality of water ejectors, a sludge branch pipe is arranged on the sludge reflux pipe behind the reflux pump and is connected with inlets of the water ejectors, an air inlet branch pipe is also arranged on the air inlet pipe, the air inlet branch pipe is connected with inlets of the water ejectors, outlets of the water ejectors are connected with the aeration pipeline, and the aeration pipeline flushes the surface of the membrane component. The invention greatly reduces the energy consumption in sewage treatment.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to low-consumption sewage treatment equipment.
Background
As shown in fig. 2, in the sewage treatment apparatus of the prior art, raw water is subjected to anaerobic reaction decontamination treatment in an anaerobic tank 13, then is subjected to aerobic reaction decontamination treatment in an aerobic tank 12, and then enters a membrane area 3, and is filtered by a membrane module 31 in the membrane area 3 to obtain treated water outlet membrane area 3; in order to keep the content of the decomposing bacteria in the sewage tank, a reflux pump 2 is arranged to pump the sludge in the membrane area 3 into an anaerobic tank 13 through a sludge reflux pipe 8; in order to increase the oxygen content of the aerobic tank 12 to facilitate the oxidation reaction, a fan 1 is arranged to supply air to an aeration pipe in the aerobic tank 12; to prevent the membrane module 31 from being clogged, an aeration line 32 connected to the blower 1 is provided, and the aeration line 32 is aerated to wash the surface of the membrane module 31, and generally, the reflux pump 2 and the blower 1 are disposed between the apparatuses.
However, the above-described conventional sewage treatment apparatus has the following problems: firstly, the energy consumption is high; the membrane module 31 is flushed by air aeration, the required air amount accounts for 60% -80% of the air supply amount of the whole equipment, and the energy consumption of the aeration equipment is higher and accounts for about 60% -70% of the total energy consumption. Secondly, the sludge backflow amount is too large, so that energy waste is caused and the sewage treatment effect is influenced; because the working medium of the reflux pump 2 and the sludge reflux pipe 8 is a mud-water mixture, the sludge reflux amount generally has a minimum value in order to ensure the normal operation of the reflux pump 2 and the sludge reflux pipe 8; for some small-sized sewage treatment equipment, the sludge backflow amount is large because no matched equipment meeting the requirements exists in the market. The problem of short retention time of sewage in a sewage treatment tank is caused by excessive sludge reflux amount, so that the sewage treatment effect is poor. The problem that sewage treatment equipment, particularly small sewage treatment equipment, is troubled by excessive sludge backflow amount and high energy consumption is always a problem, technical engineers try to develop a backflow pump matched with the small sewage treatment equipment all the time, but due to the technical bottleneck, the sludge backflow pump matched with the small sewage treatment equipment cannot be provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides low-consumption sewage treatment equipment, which solves the problems of high energy consumption, overlarge sludge backflow amount, energy waste and influence on sewage treatment effect in the prior art.
According to the embodiment of the invention, the low-consumption sewage treatment equipment comprises a membrane area, a fan and a reflux pump, wherein a membrane component and an aeration pipeline are arranged in the membrane area, sewage in the membrane area is filtered by the membrane component to obtain treated water, the treated water flows out of the membrane area, the reflux pump pumps sludge in the membrane area into a sewage treatment area in front of the membrane area through a sludge reflux pipe, the fan performs air intake aeration on a sewage treatment pool through an air inlet pipe,
the membrane component is characterized by further comprising a plurality of water ejectors, sludge branched pipes and air inlet branched pipes, wherein the sludge branched pipes are arranged on a sludge return pipe behind the reflux pump and are connected with inlets of the water ejectors, the air inlet branched pipes are further arranged on the air inlet pipe and are connected with inlets of the water ejectors, outlets of the water ejectors are connected with the aeration pipelines, and the aeration pipelines wash the surfaces of the membrane components.
The technical principle of the invention is as follows: the water ejector, the sludge branch pipe and the air inlet branch pipe are additionally arranged, a part of sludge backflow quantity is guided to the water ejector, a part of air of the fan is guided to the water ejector, the water ejector mixes part of backflow sludge and air to form a water-vapor mixture, and air is replaced to wash the membrane component, so that the energy consumption of the aeration equipment is reduced, and the sludge backflow quantity flowing back to the sewage treatment area is maintained within a proper range.
Compared with the prior art, the invention has the following beneficial effects:
the total energy consumption is greatly reduced. Because the water ejector mixes part of the returned sludge and air to form a water-vapor mixture to replace air to wash the membrane component, the air supply amount of the aeration equipment is greatly reduced, and the total energy consumption is greatly reduced.
The sewage treatment effect is improved. Because the sludge reflux quantity is shunted, the sludge reflux quantity flowing into the sewage treatment tank is kept in a reasonable range, the reaction time of sewage in the sewage treatment tank is kept in a reasonable range, and the sewage treatment effect is improved.
The device changes the traditional sewage treatment pipeline arrangement mode by additionally arranging the water ejector, the sludge branch pipe and the air inlet branch pipe, solves the technical problem which is difficult to solve all the time, ingeniously bypasses the technical problem which is difficult to overcome by researching and developing a sludge pump matched with the small sewage treatment device, obtains unexpected energy-saving effect and is creative.
Preferably, two water emitters are included: the outlet of the first water ejector is connected with one end of the aeration pipeline, and the outlet of the second water ejector is connected with the other end of the aeration pipeline.
The two water ejectors are respectively connected to the two ends of the aeration pipeline, so that the aeration of the aeration pipeline is uniform, and the scouring effect on the surface of the membrane component is better.
Preferably, a first adjusting ball valve is arranged on the sludge branch pipe.
Can reach the sludge volume that adjusts entering water dart through adjusting first regulation ball valve, guarantee the effect of washing away to the membrane module, on the other hand has also indirectly adjusted the sludge flow through the mud back flow, does benefit to the sewage treatment effect.
Further, the reflux pump pumps the sludge in the membrane area into the anaerobic tank in front of the membrane area through a sludge reflux pipe, and the fan feeds air into the aerobic tank for aeration through an air inlet pipe.
Drawings
FIG. 1 is a schematic structural view of a low-consumption sewage treatment apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a conventional sewage treatment apparatus.
FIG. 3 is a schematic view of a part of the structure of a low-consumption sewage treatment apparatus according to an embodiment of the present invention applied to a sewage treatment system.
In the above drawings: 1. a fan; 2. a reflux pump; 3. a membrane zone; 4. a first water ejector; 5. a second water ejector; 6. a first regulating ball valve; 7. sludge is branched; 8. a sludge return pipe; 9. an air inlet pipe; 10. air inlet branch pipes; 11. a second regulating ball valve; 12. an aerobic tank; 13. an anaerobic tank; 31. a membrane module; 32. an aeration pipeline.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
As shown in fig. 1, in the low-consumption sewage treatment apparatus according to the embodiment of the present invention, a membrane module 31 and an aeration pipeline 32 are disposed in a membrane module 3, sewage in the membrane module 3 is filtered by the membrane module 31 to obtain treated water, and the treated water flows out of the membrane module 3, and the aeration pipeline 32 washes the surface of the membrane module 31 to prevent the surface of the membrane module 31 from being blocked. The return pump 2 pumps the sludge of the membrane area 3 into the sewage treatment area through the sludge return pipe 8 to increase the bacteria content of the sewage treatment area, the fan 1 enters air into the sewage treatment area needing oxygen through the air inlet pipe 9 for aeration, the sludge return pipe 8 behind the return pump 2 is provided with the communicated sludge branch pipe 7, the sludge branch pipe 7 is respectively connected with the inlets of the first water ejector 4 and the second water ejector 5, the air inlet pipe 9 is further provided with the air inlet branch pipe 10, the air inlet branch pipe 10 is respectively connected with the inlets of the first water ejector 4 and the second water ejector 5, the outlet of the first water ejector 4 is connected with one end of the aeration pipeline 32, the outlet of the second water ejector 5 is connected with the other end of the aeration pipeline 32, and the aeration pipeline 32 washes the surface of the membrane component 31. The two water ejectors are respectively connected to the two ends of the aeration pipeline 32, so that the aeration of the aeration pipeline 32 is uniform, and the washing effect on the surface of the membrane component 31 is better.
As a prior art, the water ejector has the function of ejecting two mixed objects from an outlet, the structure and the principle of the water ejector are not further described in the application, and the words "first" and "second" are used in the application to distinguish equipment with the same structure in different places. In order to adjust the sludge amount of the first water ejector 4 and the second water ejector 5, a first adjusting ball valve 6 is also arranged on the sludge branch pipe 7. Can reach the sludge volume that adjusts entering water dart through adjusting first regulation ball valve, guarantee the effect of washing away to the membrane module, on the other hand has also indirectly adjusted the sludge flow through the mud back flow, does benefit to the sewage treatment effect.
The device has the advantages that: by additionally arranging the water ejector, the sludge branch pipe and the air inlet branch pipe, the traditional sewage treatment pipeline arrangement mode is changed, the technical problem which is difficult to solve all the time is solved, and the technical problem which is difficult to overcome by researching and developing a sludge pump matched with small sewage treatment equipment is ingeniously avoided; meanwhile, the total energy consumption is greatly reduced, and the total energy consumption is greatly reduced because a part of returned sludge is mixed with air by the water ejector to form a water-vapor mixture to replace air to wash the membrane component, so that the air supply amount of the aeration equipment is greatly reduced; meanwhile, the sewage treatment effect is improved, and the sludge reflux quantity is shunted, so that the sludge reflux quantity flowing into the sewage treatment tank is kept within a reasonable range, the reaction time of sewage in the sewage treatment tank is kept within a reasonable range, and the sewage treatment effect is improved.
The low-consumption sewage treatment device can be applied to various sewage treatment systems, and specific applications of the device are illustrated for further understanding. As shown in figure 3, a sludge return pipe 8 of the low-consumption sewage treatment equipment is communicated with an anaerobic tank 13, a second adjusting ball valve 11 is further arranged on the sludge return pipe 8, a fan 1 is communicated with an aerobic tank 12 through an air inlet pipe 9, an aeration device is arranged at the bottom of the aerobic tank 12, and the fan 1 supplies air to the aeration device through the air inlet pipe 9. The sewage raw water firstly enters the anaerobic tank 13 to generate anaerobic reaction, then enters the aerobic tank 12 to generate aerobic reaction, and then enters the membrane area 3 to be filtered by the membrane component 31 to obtain treated water. The sewage treatment system also includes other equipment or devices which are not shown in fig. 3 for simplicity and clarity.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. The utility model provides a low-consumption sewage treatment device, includes membrane district (3), fan (1) and backwash pump (2), be provided with membrane module (31) and aeration pipe way (32) in the membrane district (3), sewage in the membrane district (3) warp membrane module (31) filter the back and obtain the processing water and flow out outside membrane district (3), backwash pump (2) will the mud of membrane district (3) is pumped through mud back flow (8) and is arrived the sewage treatment district before membrane district (3), fan (1) is through intake pipe (9) to the aeration of intaking of sewage treatment pond, its characterized in that,
the sludge washing device is characterized by further comprising a plurality of water ejectors, sludge branch pipes (7) and air inlet branch pipes (10), wherein the sludge branch pipes (7) are arranged on a sludge return pipe (8) behind the reflux pump (2), the sludge branch pipes (7) are connected with inlets of the water ejectors, the air inlet branch pipes (10) are further arranged on the air inlet pipe (9), the air inlet branch pipes (10) are connected with inlets of the water ejectors, outlets of the water ejectors are connected with the aeration pipelines (32), and the surfaces of the membrane assemblies (31) are washed by the aeration pipelines (32).
2. The low-consumption sewage treatment apparatus of claim 1, comprising two water emitters: a first water ejector (4) and a second water ejector (5), wherein the outlet of the first water ejector (4) is connected with one end of the aeration pipeline (32), and the outlet of the second water ejector (5) is connected with the other end of the aeration pipeline (32).
3. The low-consumption sewage treatment plant according to claim 1 or 2, wherein the sludge branch pipe (7) is provided with a first regulating ball valve (6).
4. A low-consumption sewage treatment plant according to claim 1, wherein said recirculation pump (2) pumps sludge from said membrane area (3) through a sludge recirculation pipe (8) to an anaerobic basin (13) in front of said membrane area (3), and said fan (1) aerates said aerobic basin (12) by intake air through an intake pipe (9).
5. A sewage treatment system characterized by using a low-consumption sewage treatment apparatus according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243888.3A CN112340810A (en) | 2020-11-10 | 2020-11-10 | Low-consumption sewage treatment equipment and sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243888.3A CN112340810A (en) | 2020-11-10 | 2020-11-10 | Low-consumption sewage treatment equipment and sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112340810A true CN112340810A (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011243888.3A Pending CN112340810A (en) | 2020-11-10 | 2020-11-10 | Low-consumption sewage treatment equipment and sewage treatment system |
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| Country | Link |
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| CN (1) | CN112340810A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139135A (en) * | 2007-09-04 | 2008-03-12 | 北京清大国华环保科技有限公司 | Shooting flow film-bioreactor method and device |
| CN201458897U (en) * | 2009-05-22 | 2010-05-12 | 北京清大国华环保科技有限公司 | Jet airlift MBR device |
| US20100224556A1 (en) * | 2009-03-09 | 2010-09-09 | Liao Zhimin | Jet aeration apparatus and method of using the same |
| CN202643437U (en) * | 2012-07-10 | 2013-01-02 | 上海世渊环保科技有限公司 | Jet-type gas stripping ultrafiltration membrane device |
| CN214327206U (en) * | 2020-11-10 | 2021-10-01 | 重庆耐德环境技术有限公司 | Low-consumption sewage treatment equipment and sewage treatment system |
-
2020
- 2020-11-10 CN CN202011243888.3A patent/CN112340810A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139135A (en) * | 2007-09-04 | 2008-03-12 | 北京清大国华环保科技有限公司 | Shooting flow film-bioreactor method and device |
| US20100224556A1 (en) * | 2009-03-09 | 2010-09-09 | Liao Zhimin | Jet aeration apparatus and method of using the same |
| CN201458897U (en) * | 2009-05-22 | 2010-05-12 | 北京清大国华环保科技有限公司 | Jet airlift MBR device |
| CN202643437U (en) * | 2012-07-10 | 2013-01-02 | 上海世渊环保科技有限公司 | Jet-type gas stripping ultrafiltration membrane device |
| CN214327206U (en) * | 2020-11-10 | 2021-10-01 | 重庆耐德环境技术有限公司 | Low-consumption sewage treatment equipment and sewage treatment system |
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