CN111440016A - Aerobic fermentation reactor system with air support membrane structure - Google Patents
Aerobic fermentation reactor system with air support membrane structure Download PDFInfo
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- CN111440016A CN111440016A CN202010217041.1A CN202010217041A CN111440016A CN 111440016 A CN111440016 A CN 111440016A CN 202010217041 A CN202010217041 A CN 202010217041A CN 111440016 A CN111440016 A CN 111440016A
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- Prior art keywords
- sludge
- air
- fermentation
- greenhouse
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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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
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention discloses an aerobic fermentation pile system with an air support membrane structure, which belongs to the technical field of sludge fermentation and comprises a feeding stage, wherein the feeding stage comprises material piling storage and material mixing, sludge, filler and returned materials are mixed into mixed materials, and the mixed materials are conveyed to a fermentation process stage; a fermentation process section, which controls the oxygen content and temperature of the sludge pile through a fluid control system and ferments the mixed materials; in the discharging stage, discharging the fertilizer pile in the sludge fermentation tank to a screening area for screening to obtain a finished product; and the deodorization process section is used for deodorizing the gas generated by the sludge in a biological deodorization mode. According to the invention, by adopting a fluid control technology and a positive pressure pile body negative pressure gas distribution and oxygen supply technology in the shed, important parameters such as oxygen content and temperature of the sludge pile body can be more flexibly and changeably controlled, and the sludge treatment efficiency and the quality of finished sludge are greatly improved.
Description
Technical Field
The invention relates to the technical field of sludge fermentation, in particular to an aerobic fermentation pile system with an air support membrane structure.
Background
Under the promotion that the urbanization process of China is accelerated, urban population is increased rapidly, and the national investment on environmental protection is increased continuously, the number of sewage treatment plants in China is increased continuously, the sewage treatment capacity is improved continuously, and the sludge produced by the sewage treatment plants is also increased greatly. According to the measurement and calculation of the national environmental science research institute, in 2010, more than 3000 ten thousand tons of dewatered sludge generated by various municipal sewage treatment plants in China can be generated, and the dewatered sludge accounts for more than 5% of the total solid waste discharge in China.
However, the existing sludge treatment and utilization technology is just started in China, and less than one tenth of sludge treatment facilities are matched and built in the existing sewage treatment plants in China. Most of municipal sewage treatment plants only complete the separation of water and solids, sludge is not treated, and the sludge treatment method in many places is that the sludge is dug into a pit and buried in the suburbs and even directly poured into rivers, and the resource utilization is not mentioned. In recent years, secondary pollution events caused by sludge are increasing in various places, and people are dissatisfied. In the past, an incomplete sewage treatment mode enables a sewage treatment plant for protecting the environment to become a pollution great household. In the coming decade, the harmless treatment and resource utilization of municipal sludge will become a new environmental protection investment key field in China.
The main methods for sludge disposal include composting, landfill, incineration, heat drying and the like. The composting method is paid more attention to by the advantages of low cost, effective killing of pathogenic bacteria, deodorization, reduction and stabilization of waste and the like, and becomes one of the important methods for harmlessness and reclamation of sludge at present. But the prior composting process has low sludge treatment efficiency and low quality of finished sludge.
Disclosure of Invention
The invention aims to provide an aerobic fermentation pile system with an air-supported membrane structure, which aims to solve the problem that the existing composting process has low sludge treatment efficiency and the quality of finished sludge is low in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an aerobic fermentation reactor system with an air-supported membrane structure comprises
A feeding stage, which comprises stockpiling storage and mixing, wherein sludge, filler and returned materials are mixed into mixed materials and the mixed materials are sent to a fermentation process section;
a fermentation process section, which controls the oxygen content and temperature of the sludge pile through a fluid control system and ferments the mixed materials;
in the discharging stage, discharging the fertilizer pile in the sludge fermentation tank to a screening area for screening to obtain a finished product;
and the deodorization process section is used for deodorizing the gas generated by the sludge in a biological deodorization mode.
Further, the fluid control system comprises a greenhouse, a sludge fermentation tank is arranged in the greenhouse, the bottom of the sludge fermentation tank is communicated with the negative-pressure aeration air pipe, an air supply fan is arranged at one end of the greenhouse, an air exhaust fan is arranged at the other end of the greenhouse, and a fully-closed air supporting film is formed in the greenhouse.
Further, the mixed water content of the feeding stage is 55-62%.
And further, undersize particles separated out are finished products, and oversize large particles are returned to the feeding stage.
Furthermore, the deodorization process section adopts organic and inorganic mixed fillers.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, by adopting a fluid control technology and a positive pressure pile body negative pressure gas distribution and oxygen supply technology in the shed, important parameters such as oxygen content and temperature of the sludge pile body can be more flexibly and changeably controlled, and the sludge treatment efficiency and the quality of finished sludge are greatly improved.
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 description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic diagram of the overall flow structure of the present invention;
FIG. 2 is a schematic view of a fluid control system of the present invention;
FIG. 3 is a schematic view showing the direction of air flow and the air pressure in the sludge fermentation tank shown in FIG. 2.
In the figure, 1 a greenhouse, 2 a sludge fermentation tank, 3 an air supply fan, 4 an exhaust fan and 5 a negative pressure aeration air pipe.
Detailed Description
In order that the above objects, features and advantages of the present invention may be more clearly understood, the present invention will be further described with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Referring to FIGS. 1-3, an air supported membrane aerobic fermentation stack system comprises
The feeding stage comprises stockpiling storage and material mixing, wherein sludge, filler and returned materials are uniformly mixed into mixed material with the water content of 55-62%, and the mixed material is conveyed to the sludge fermentation tank 2 by a belt conveyor;
the fermentation process section is the core of the whole sludge compost, and the temperature and the oxygen content directly determine the sludge treatment efficiency and the quality of finished products. The system has a unique fluid control technology and a positive pressure pile body negative pressure gas distribution and oxygen supply technology in the shed, can more flexibly and changeably control important parameters such as oxygen content, temperature and the like of the sludge pile body, and greatly improves the sludge treatment efficiency and the quality of finished sludge; the fluid control system comprises a greenhouse 1, a sludge fermentation tank 2 is arranged in the greenhouse 1, the bottom of the sludge fermentation tank 2 is communicated with a negative-pressure aeration air pipe 5, an air supply fan 3 is arranged at one end of the greenhouse 1, an air exhaust fan 4 is arranged at the other end of the greenhouse, an air distribution plate is arranged at the bottom of the sludge fermentation tank 2 and communicated with the negative-pressure aeration air pipe 5, and a fully-closed air supporting membrane is formed in the greenhouse 1. The air pressure direction in the greenhouse 1 is upward, and the air flow in the greenhouse 1 blows from the air supply fan 3 to the air exhaust fan 4 along the greenhouse wall of the greenhouse 1. The airflow direction above the sludge fermentation tank 2 is from top to bottom; the air pressure above the greenhouse 1 is +200Pa, the air pressure in the material stack in the fermentation process section is +200 Pa-200 Pa, and the air pressure in the negative-pressure aeration air pipe 5 is-200 Pa. The material pile stays in the sludge fermentation tank 2 for less than 1-2 months, and then stable products (municipal sludge for 21 days) can be produced.
And in the discharging stage, the fertilizer pile body discharged from the sludge fermentation tank 2 is conveyed to a screening machine in a screening area by a belt conveyor for screening, and decomposed compost of small particles of undersize materials, namely compost finished products, is conveyed to a dump truck or a shed by a movable belt conveyor for aging and then is sold. The decomposed compost (nutrient soil) can be used for fertilizing forest lands, greening cultivation of gardens and roofs, or improving soil. The screened larger particulate materials are returned to the feed end of the composting tank by a belt conveyor (or directly by a loader) and mixed into the feed stage to be used as return materials.
And the deodorization process section adopts a biological deodorization mode to perform gas deodorization. The biological deodorization device filler adopts special high-efficiency organic and inorganic mixed fillers with various grades, has good permeability and structural stability, and has the optimal environment for adsorbing pollutants and microorganism growth. The treated odor can reach the emission standard. The invention has no effluvium, can be easily collected and treated, has no mosquito and fly and is not influenced by weather factors.
The invention combines two systems of dynamic ventilation composting and pile turning machine, and the positive pressure composting negative pressure aeration in the shed ensures the porosity and uniformity of the sludge; the air supply fan 3 and the exhaust fan 4 are used for controlling the air pressure in the greenhouse 1 in the wind direction and the wind speed in the ventilation process.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides an air supports membrane structure aerobic fermentation and piles system which characterized in that: comprises that
A feeding stage, which comprises stockpiling storage and mixing, wherein sludge, filler and returned materials are mixed into mixed materials and the mixed materials are sent to a fermentation process section;
a fermentation process section, which controls the oxygen content and temperature of the sludge pile through a fluid control system and ferments the mixed materials;
in the discharging stage, the fertilizer pile in the sludge fermentation tank (2) is discharged to a screening area for screening to obtain a finished product;
and the deodorization process section is used for deodorizing the gas generated by the sludge in a biological deodorization mode.
2. The air-supported membrane structured aerobic fermentation stack system of claim 1, wherein: the fluid control system comprises a greenhouse (1), a sludge fermentation tank (2) is arranged in the greenhouse (1), the bottom of the sludge fermentation tank (2) is communicated with a negative pressure aeration air pipe (5), an air supply fan (3) is arranged at one end of the greenhouse (1), an air exhaust fan (4) is arranged at the other end of the greenhouse (1), and a fully-closed air support membrane is formed in the greenhouse (1).
3. The air-supported membrane structured aerobic fermentation stack system of claim 1, wherein: the mixed water content of the feeding stage is 55-62%.
4. The air-supported membrane structured aerobic fermentation stack system of claim 1, wherein: and small undersize particles separated by screening are finished products, and large oversize particles are returned to the feeding stage.
5. The air-supported membrane structured aerobic fermentation stack system of claim 1, wherein: the deodorization process section adopts organic and inorganic mixed fillers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010217041.1A CN111440016A (en) | 2020-03-25 | 2020-03-25 | Aerobic fermentation reactor system with air support membrane structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010217041.1A CN111440016A (en) | 2020-03-25 | 2020-03-25 | Aerobic fermentation reactor system with air support membrane structure |
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| CN111440016A true CN111440016A (en) | 2020-07-24 |
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| CN202010217041.1A Pending CN111440016A (en) | 2020-03-25 | 2020-03-25 | Aerobic fermentation reactor system with air support membrane structure |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202193740U (en) * | 2011-09-20 | 2012-04-18 | 张毅 | Box body type bio-fermentation device with blender |
| CN103332974A (en) * | 2013-07-04 | 2013-10-02 | 北京圣海林生态园林环境工程有限公司 | Tank-type AOR treatment device |
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2020
- 2020-03-25 CN CN202010217041.1A patent/CN111440016A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202193740U (en) * | 2011-09-20 | 2012-04-18 | 张毅 | Box body type bio-fermentation device with blender |
| CN103332974A (en) * | 2013-07-04 | 2013-10-02 | 北京圣海林生态园林环境工程有限公司 | Tank-type AOR treatment device |
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Application publication date: 20200724 |