CN115367839B - Anaerobic digestion liquid treatment device - Google Patents
Anaerobic digestion liquid treatment device Download PDFInfo
- Publication number
- CN115367839B CN115367839B CN202210833056.XA CN202210833056A CN115367839B CN 115367839 B CN115367839 B CN 115367839B CN 202210833056 A CN202210833056 A CN 202210833056A CN 115367839 B CN115367839 B CN 115367839B
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- China
- Prior art keywords
- reactor
- membrane component
- anaerobic digestion
- membrane
- treatment device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 63
- 230000029087 digestion Effects 0.000 title claims abstract description 34
- 239000012528 membrane Substances 0.000 claims abstract description 76
- 239000002893 slag Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000010842 industrial wastewater Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 239000000126 substance Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 8
- 230000001079 digestive effect Effects 0.000 description 6
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000009295 crossflow filtration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001614 effect on membrane Effects 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
Landscapes
- 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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention is used for industrial wastewater treatment, belongs to the technical field of environmental protection equipment, and in particular relates to an anaerobic digestion liquid treatment device, which comprises a reactor, wherein a liquid inlet pipe is rotationally arranged in the reactor, a membrane component is circumferentially fixed on the liquid inlet pipe, and an air supply pipe is arranged on and/or under the membrane component, and the liquid inlet pipe pumps anaerobic digestion liquid into the membrane component in the reactor to enable the anaerobic digestion liquid to react on the membrane component; the membrane component adopts an organic membrane or an inorganic membrane component; the gas supply pipe is used for guiding high-temperature hot gas onto the outer surface of the membrane component to provide temperature for the product passing through the membrane component to continue to react; the anaerobic digestion liquid treatment device adopting the technical scheme of the invention can solve the problems that the existing device can only separate solid from liquid and is difficult to recycle and harmless the digestion liquid.
Description
Technical Field
The invention is used for industrial wastewater treatment, belongs to the technical field of environmental protection equipment, and particularly relates to an anaerobic digestion liquid treatment device.
Background
Anaerobic digestion liquid contains rich nitrogen, phosphorus, trace elements, humic acid, amino acid and other nutrient substances, but most of digestion liquid cannot be effectively treated due to the limitations of the current application conditions and application technology.
At present, anaerobic digestion liquid can only be subjected to solid-liquid separation, and the problems of recycling and harmlessness of the digestion liquid cannot be solved, so that new equipment to be developed and further treated.
Chinese patent CN 113788513A discloses a filtering separator and its application, which adopts ceramic membrane to realize solid-liquid separation under cross-flow filtration technology, but the subsequent product needs to be further concentrated; chinese patent CN103007600 a discloses a ceramic membrane filtration device, a dynamic filtration device and a method for using the same, which uses a circular plate rotating at high speed to make the liquid have a shearing force, so that the filter cake can be continuously swept, and the surface of the ceramic membrane is kept clean and tidy, but the product is not further treated, and the generated filter cake still needs to be treated with great effort.
Accordingly, there is a need to provide an improved device that addresses the above-described deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide an anaerobic digestion liquid treatment device, which solves the problems that the existing device can only separate solid from liquid and is difficult to recycle and harmless the digestion liquid.
In order to achieve the aim, the invention provides an anaerobic digestion liquid treatment device, which comprises a reactor, wherein a liquid inlet pipe is rotationally arranged in the reactor, a membrane component is circumferentially fixed on the liquid inlet pipe, an air supply pipe is arranged on and/or under the membrane component, an air exhaust hole is arranged at the upper part of the reactor, and a slag discharge port is arranged at the lower part of the reactor;
The liquid inlet pipe pumps the anaerobic digestion liquid into a membrane component in the reactor, so that the anaerobic digestion liquid reacts on the membrane component;
The membrane component adopts an organic membrane or an inorganic membrane component;
The gas supply pipe is used for guiding high-temperature hot gas onto the outer surface of the membrane component to provide temperature for the product passing through the membrane component to continue to react;
The slag discharging port is used for timely discharging the reacted residues and clean water out of the reactor;
The exhaust port is used for exhausting the reacted gas out of the reactor.
Preferably, in order to ensure the durability of the reactor, the housing is made of stainless steel, and in order to facilitate the rotary connection of the liquid inlet pipe and the reactor, the liquid inlet pipe is fixed to the reactor through a bearing.
As a preferable scheme, in order to facilitate the feeding of anaerobic digestion liquid and ensure the durability of a liquid inlet pipe, the inlet end of the liquid inlet pipe is connected with a high-pressure pump, the outlet section is communicated with a membrane component (the outlet section is a part positioned in a reactor), and the outlet end is provided with a valve for discharging residues, and the liquid inlet pipe is made of stainless steel.
Preferably, in order to enhance the separation capacity of the membrane module, and when the reaction residues may be separated from the surface of the membrane module, the membrane module is normally in a rotating state to provide centrifugal force.
Preferably, in order to uniformly provide an air inlet environment and balance stress conditions of the membrane assembly as much as possible, the air supply pipes are uniformly distributed along the rotation plane of the membrane assembly.
As the preferred scheme, for better evenly dispersing the steam of air supply pipe on the membrane module, increase reaction area, the air supply pipe includes main pipe and branch pipe, is responsible for and passes through the branch pipe with steam dispersion in different regions, install the nozzle towards membrane module rotation plane on the branch pipe, the dispersion steam that the nozzle can be better, accurate jet.
As a preferable scheme, the slag discharging port is arranged in an open way for conveniently discharging the reacted substances at any time. No valve is provided.
As a preferable scheme, for convenience of further treating the incompletely reacted tail gas, the exhaust port is arranged above the side of the reactor, and the outlet of the exhaust port is connected with a tail gas purifying device.
In a preferred scheme, in order to ensure the filtration efficiency of the membrane component and reduce the use cost, the membrane component structure adopts a disc type, a tube type or a plate type which are common in the market.
As a preferable scheme, in order to conveniently install the pressure and temperature monitoring element, the reaction temperature and pressure are accurately detected, a plurality of pressure and temperature monitoring ports are arranged on the reactor, and the holes of the temperature and pressure monitoring ports are provided with sleeves and flanges.
Compared with the existing digestive juice treatment device in the market, the anaerobic digestive juice treatment device provided by the invention has the following advantages:
1. The treatment device is simple and exquisite, and the hot air flow is always provided on the upper surface of the rotating membrane assembly, and the digestive juice reacts at a certain temperature, so that the products can be discharged up to the standard after the digestive juice passes through the membrane assembly, the environmental pollution is reduced, and the harmless treatment is realized.
2. The membrane module is fixed on the feed liquor pipe in the reactor, and the feed liquor pipe is fixed on the reactor through the bearing, and the feed liquor pipe is constantly rotated around the bearing under the effect of driving force to make the membrane module constantly rotate and filter digestive juice, most material is stopped and stays in the membrane module, under the steam effect on membrane module surface, can realize in time taking place the reaction and discharging membrane module surface through the membrane module material, and the gas after purifying is directly discharged, when keeping the clean of membrane module surface, has reduced the disposal cost of follow-up product, practices thrift the cost.
3. The practicability is strong, the application range is wide, and the digestive juice can reach the discharge standard under the treatment of the device, thereby reducing the environmental pollution and having high economic and social effects.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. Wherein:
FIG. 1 is a schematic diagram of an anaerobic digester effluent treatment unit according to an embodiment of the present invention;
In the figure: 101-liquid inlet pipe, 102-membrane component, 201-gas supply pipe, 202-gas supply pipe branch, 203-nozzle, 301-slag discharge port, 401-gas outlet, 501-reactor and 502-bearing.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled" and "connected" as used herein are to be construed broadly, and may be, for example, fixedly coupled or flange coupled; either by threaded connection or indirectly by intermediate members, the specific meaning of the terms being understood by those skilled in the art as the case may be.
As shown in fig. 1, an embodiment of the present invention provides an anaerobic digestion solution treatment apparatus, including: 101-liquid inlet pipe, 102-membrane component, 201-gas supply pipe, 202-gas supply pipe branch, 203-nozzle, 301-slag discharge port, 401-gas outlet, 501-reactor and 502-bearing.
The reactor 501 provides a reaction place for a device, stainless steel materials are adopted, a vertical round tank is preferably adopted, a liquid inlet pipe 101 is designed at the middle shaft part of the reactor 501, the liquid inlet pipe 101 is fixedly connected with the reactor 501 through a bearing 502, the bearing 502 is directly or fixedly arranged on the reactor 501 through a bracket, anaerobic digestion liquid enters the membrane module 102 through a hole formed in the liquid inlet pipe 101, the membrane module 102 is vertically fixed with the liquid inlet pipe 101, under the action of the membrane module 102, the digestion liquid is trapped by macromolecule substances, micromolecule substances pass through the membrane module 102, so that the solid-liquid separation effect is achieved, in addition, the liquid inlet pipe 101 is driven by a motor to rotate around a bearing 502 on the reactor 501, so that the membrane module 102 is driven to rotate, solid-liquid separation is better realized under the action of centrifugal force and rotary cutting force, in addition, the air supply pipe 201 distributed on the upper part of the membrane module 102 evenly distributes hot air on the surface of the membrane module 102 through a nozzle 203, thereby further reacting the separated substances, the reacted residues are discharged out of the membrane module 102 through a slag discharge port 301, and the purified gas is discharged out of the reactor 501 through a slag discharge port 401. The portion of the liquid inlet pipe 101 inside the reactor 501 is preferably in the form of a hollow shaft, so as to facilitate connection and fixation, an outlet end of the hollow shaft may be connected to an inner wall of the reactor 501 through a fixing bracket, a bearing (not shown in the figure) is also provided at a rotational connection position of the hollow shaft and the fixing bracket, and a portion of the hollow shaft outside the reactor 501 is connected to a main body portion of the liquid inlet pipe in a rotational connection manner.
In the embodiment of the invention, the hot gas in the gas supply pipe 201 is firstly raised to a certain temperature, so that small molecular substances passing through the membrane assembly 102 are enough to react, then the membrane assembly 102 is rotated under the action of driving force, the small molecular substances passing through the membrane assembly 102 can be timely thrown out by adjusting the rotating speed, and the surface of the membrane assembly 102 is kept clean. Preferably, the gas supply pipe 201 distributes the hot gas uniformly over the upper and lower surfaces of the membrane module 102, preferably through the nozzles 203. For accurate detection of reaction temperature and pressure, a plurality of pressure and temperature monitoring ports are provided on the reactor 501, and the openings of the temperature and pressure monitoring ports are provided with a sleeve and a flange.
In the embodiment of the invention, macromolecular substances, ash and the like are trapped in the membrane assembly 102 under the action of pressure difference through the permeation, trapping or screening characteristics of the membrane assembly 102, the macromolecular substances, ash and the like are discharged from an outlet collected on the outlet end of the liquid inlet pipe 101 through a back flushing effect (the outlet end is an opening facing the slag discharge port), the outlet end is normally closed, the back flushing is opened, the reactor 501 is further discharged through the slag discharge port 301, and the gas after reaction purification is discharged through the gas discharge port 401. The main components of the small molecular substances passing through the membrane component 102 relate to organic matters such as carbon, nitrogen, COD and the like, the reaction occurs on the surface of the membrane component 102, and the final products are residues such as carbon dioxide, water, inorganic salts and the like. The generated harmless gas is discharged through the gas outlet 401, and the residue of inorganic salt and the like is discharged through the residue outlet 301.
In the embodiment of the invention, anaerobic digestion liquid enters the liquid inlet pipe 101 under the action of the high-pressure pump, the digestion liquid enters the gap of the membrane assembly 102 through the liquid inlet pipe 101, the membrane assembly 102 can intercept macromolecular substances, small molecular substances are discharged through the membrane assembly 102, and the small molecular substances react under the action of hot gas on the surface of the membrane assembly 102, so that the digestion liquid can be discharged up to the standard after passing through the membrane assembly 102, and the environmental pollution is reduced. The residue generated by the reaction can be rapidly discharged out of the device under the action of rotary cutting force, and the product can reach the discharge standard after being purified, so that the treatment cost of the subsequent products is reduced, and the cost is saved. The device is simple, convenient to install and high in practicability, and can better solve the problems of recycling and harmlessness of anaerobic digestion liquid.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The anaerobic digestion liquid treatment device is characterized by comprising a reactor, wherein a liquid inlet pipe is rotationally arranged in the reactor, a membrane component is circumferentially fixed on the liquid inlet pipe, an air supply pipe is arranged on and/or below the membrane component, an air exhaust hole is arranged at the upper part of the reactor, and a slag discharge port is arranged at the lower part of the reactor;
The liquid inlet pipe pumps the anaerobic digestion liquid into a membrane component in the reactor, so that the anaerobic digestion liquid reacts on the membrane component;
The membrane component adopts an organic membrane or an inorganic membrane component;
The gas supply pipe is used for guiding high-temperature hot gas onto the outer surface of the membrane component to provide temperature for the product passing through the membrane component to continue to react;
The slag discharging port is used for timely discharging the reacted residues and clean water out of the reactor;
The exhaust port is used for exhausting the reacted gas out of the reactor;
The reactor shell is made of stainless steel, and the liquid inlet pipe is fixed on the reactor through a bearing;
the air supply pipe comprises a main pipe and a branch pipe, and a nozzle facing the rotation plane of the membrane assembly is arranged on the branch pipe;
The inlet end of the liquid inlet pipe is connected with the high-pressure pump, the outlet section is communicated with the membrane component, and the liquid inlet pipe is made of stainless steel.
2. An anaerobic digestion solution treatment device according to claim 1, wherein: the membrane assembly is normally in a rotated state.
3. An anaerobic digestion solution treatment device according to claim 2, wherein: the gas supply pipes are evenly distributed along the rotation plane of the membrane assembly.
4. An anaerobic digestion solution treatment device according to claim 1, wherein: the slag discharging port is arranged in an open mode.
5. An anaerobic digestion solution treatment device according to claim 1, wherein: the exhaust port is arranged above the side of the reactor, and the outlet of the exhaust port is connected with an exhaust gas purifying device.
6. An anaerobic digestion solution treatment device according to claim 1 or 2, wherein: the membrane component is in a disc type, tubular type or plate type structure.
7. An anaerobic digestion solution treatment device according to claim 1, wherein: the reactor is provided with a pressure and temperature monitoring port, and the opening of the pressure and temperature monitoring port is provided with a sleeve and a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210833056.XA CN115367839B (en) | 2022-07-14 | 2022-07-14 | Anaerobic digestion liquid treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210833056.XA CN115367839B (en) | 2022-07-14 | 2022-07-14 | Anaerobic digestion liquid treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115367839A CN115367839A (en) | 2022-11-22 |
| CN115367839B true CN115367839B (en) | 2024-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210833056.XA Active CN115367839B (en) | 2022-07-14 | 2022-07-14 | Anaerobic digestion liquid treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115367839B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105884142A (en) * | 2016-06-13 | 2016-08-24 | 陈菊芳 | Coal chemical industry waste water treatment process and device |
| CN113788513A (en) * | 2021-09-22 | 2021-12-14 | 中节能工程技术研究院有限公司 | Filtering and separating device and application thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101611692B1 (en) * | 2014-05-09 | 2016-04-14 | 현대건설주식회사 | System for treating organic wastewater using heating type filtration |
| CN105366898B (en) * | 2015-12-10 | 2018-01-23 | 北京林业大学 | It is a kind of that the anaerobic sludge digestion high level cadre's dewatering process for realizing adjustable high solid content is synchronously dehydrated based on dual membrane system |
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2022
- 2022-07-14 CN CN202210833056.XA patent/CN115367839B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105884142A (en) * | 2016-06-13 | 2016-08-24 | 陈菊芳 | Coal chemical industry waste water treatment process and device |
| CN113788513A (en) * | 2021-09-22 | 2021-12-14 | 中节能工程技术研究院有限公司 | Filtering and separating device and application thereof |
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| Publication number | Publication date |
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| CN115367839A (en) | 2022-11-22 |
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