CN109607870A - A kind of biogas slurry recycling treatment process - Google Patents
A kind of biogas slurry recycling treatment process Download PDFInfo
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- CN109607870A CN109607870A CN201910001448.8A CN201910001448A CN109607870A CN 109607870 A CN109607870 A CN 109607870A CN 201910001448 A CN201910001448 A CN 201910001448A CN 109607870 A CN109607870 A CN 109607870A
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- biogas slurry
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- concentrated water
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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
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of biogas slurry recycling treatment process, comprising the following steps: S1, fruits and vegetables rubbish obtain fruits and vegetables biogas slurry through anaerobic fermentation；S2, fruits and vegetables biogas slurry, which are sent into flotation tank, carries out air-flotation process；S3, air bearing water outlet carry out cross-flow filtration into tubular ultra-filtration membrane, obtain level-one concentrated water and level-one produces water, level-one produces water and contains ammonia nitrogen and organic matter, and level-one production water enters second level nanometer film and is filtered；S4, level-one produce water and obtain second level concentrated water and second level production water through second level nano-film filtration, and second level concentrated water is concentrated to be made organic fertilizer；Second level produces water and enters deamination film processing system；S5, second level produce water and carry out pH value adjustment, and free ammonia is made to be ionized into ion ammonium, then filter by deamination film, obtain three-level concentrated water and three-level and produce water, three-level concentrated water is concentrated be made it is organic.Can by biogas slurry organic acid and the bioactive substances such as humic acid, organic matter extract, organic fertilizer is made, the secondary use of resource is realized in returning to the field consumption.
Description
Technical field
The present invention relates to fruits and vegetables field of sewage treatment, and in particular to a kind of biogas slurry recycling treatment process.
Background technique
During fruits and vegetables rubbish concentrates the producing, processing and selling for resulting from veterinary antibiotics, a large amount of fruits and vegetables rubbish is inclined
It pours into water body, or because the diffusate that heap Integral Solution generates may flow into water body with rainwater, so as to cause water pollution.It is organic
Solid-waste anaerobic fermentation can generate a large amount of biogas slurries, biogas residue, can not be directly discharged in environment, but wherein nitrogen rich in, phosphorus,
Potassium, amino acid, microelement abundant, B family vitamin, various hydrolases, the bioactivity such as organic acid and humic acid, organic matter
Substance is good organic fertilizer, can be produced as the consumption of organic fertilizer returning to the field, realize the secondary use of resource.But often exist
Neighbouring farmland digestion capability is insufficient, winter utilization is small, long distance transportation cost is excessively high uneven and economical using spatial and temporal distributions
Property problem, limit the feasibility of agricultural consumption to a certain extent, also directly limit biogas project popularization and it is long-term efficiently
Stable operation.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of biogas slurry recycling treatment work
Skill solves the problems, such as previous fruits and vegetables biogas slurry pollution environment.
The technical solution adopted by the present invention to solve the technical problems is: a kind of biogas slurry recycling treatment process, including with
Lower step:
S1, fruits and vegetables rubbish obtain fruits and vegetables biogas slurry through anaerobic fermentation；
S2, fruits and vegetables biogas slurry, which are sent into flotation tank, carries out air-flotation process, and it is 4000~5000mg/L or so, ammonia nitrogen that air bearing, which is discharged COD,
Maintain 1500-1800mg/L；
S3, air bearing water outlet enter tubular ultra-filtration membrane and carry out cross-flow filtration, obtain level-one concentrated water and level-one produces water, level-one concentrated water contains
99% SS and colloidal substance, level-one produce water and contain ammonia nitrogen and organic matter；Air-flotation process is carried out in level-one concentrate recirculation to flotation tank,
Level-one production water enters second level nanometer film and is filtered；
S4, level-one, which produce water and obtain second level concentrated water and second level through second level nano-film filtration, produces water, and the content of organic matter of second level concentrated water >=
90%, second level concentrated water is concentrated to be made organic fertilizer；Second level produces water and enters deamination film processing system；
S5, second level production water enter deamination film processing system and first carry out pH value adjustment, so that free ammonia is ionized into ion ammonium, then pass through
The filtering of deamination film, obtains three-level concentrated water and three-level produces water, and ammonia-nitrogen content >=97% in three-level concentrated water, three-level concentrated water is concentrated to be made
Organic fertilizer, three-level produce water and give over to reuse.
Further, sewage enters in flotation tank, by stop in 30 minutes, adds flocculant, on flotation tank liquid level
The scum layer that 3-5cm can be generated is scraped dross to dross reservoir using Slag Scraping Device.
Further, in step s3, the tubular ultra-filtration membrane uses 4 times of recycle ratios, does not generate concentrated water.
Further, in step s3, air bearing water outlet is introduced into intermediate pool progress water and keeps in, and is then fed into tubular type ultrafiltration
Film.
Further, in step s 2, the sludge that air bearing generates flows into anaerobic fermentation tank and ferments.
The beneficial effects of the present invention are:
A kind of biogas slurry recycling treatment process is provided, it can be by the organic acid and the bioactivity such as humic acid, organic matter in biogas slurry
Substance extracts, and organic fertilizer is made, and the secondary use of resource is realized in returning to the field consumption.
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
Fig. 1 is biogas slurry recycling treatment process flow chart.
Specific embodiment
Presently in connection with specific embodiment, the present invention is further illustrated.These attached drawings are simplified schematic diagram only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, a kind of biogas slurry recycling treatment process, comprising the following steps:
S1, fruits and vegetables rubbish obtain fruits and vegetables biogas slurry through anaerobic fermentation；
S2, fruits and vegetables biogas slurry, which are sent into flotation tank, carries out air-flotation process, and it is 4000~5000mg/L or so, ammonia nitrogen that air bearing, which is discharged COD,
Maintain 1500-1800mg/L；The sludge that air bearing generates flows into anaerobic fermentation tank and ferments.Sewage enters in flotation tank, warp
The stop for spending 30 minutes, adds flocculant, and the scum layer of 3-5cm can be generated on flotation tank liquid level, using Slag Scraping Device by dross
It scrapes to dross reservoir.By the organic matter of flotation tank removal 70%, the load of membranous system is reduced.
S3, air bearing water outlet are introduced into intermediate pool progress water and keep in, and are then fed into tubular ultra-filtration membrane.Air bearing water outlet enters pipe
Formula ultrafiltration membrane carries out cross-flow filtration, and tubular ultra-filtration membrane uses 4 times of recycle ratios, do not generate concentrated water.The clear water rate of recovery is 100%, and film is logical
Amount is 27L/m2.h；It obtains level-one concentrated water and level-one produces water, level-one concentrated water contains 99% SS and colloidal substance, and level-one produces water and contains ammonia
Nitrogen and organic matter；Air-flotation process is carried out in level-one concentrate recirculation to flotation tank, level-one production water enters second level nanometer film and is filtered；
S4, level-one, which produce water and obtain second level concentrated water and second level through second level nano-film filtration, produces water, and the content of organic matter of second level concentrated water >=
90%, second level concentrated water is concentrated to be made organic fertilizer；Its organic matter of manufactured organic fertilizer is as the main component.Second level produces water and enters deamination
Film processing system；By second level nano-film filtration, the organic matter of higher concentration can be obtained with second level concentrated water.
S5, second level production water enter deamination film processing system and first carry out pH value adjustment, so that free ammonia is ionized into ion ammonium, then
It is filtered by deamination film, obtains three-level concentrated water and three-level and produce water, ammonia-nitrogen content >=97% in three-level concentrated water, three-level concentrated water is concentrated
Organic fertilizer is made, it is ammonia nitrogen that volume organic fertilizer main ingredient, which is made, and three-level produces water and gives over to reuse.By the deamination film processing system,
The ammonia nitrogen of higher concentration can be obtained with three-level concentrated water.
By above-mentioned process, organic matter and ammonia nitrogen in effective recycling fruits and vegetables biogas slurry, and organic fertilizer is made,
Realize returning to the field consumption, the secondary use of resource.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (5)
1. a kind of biogas slurry recycling treatment process, characterized in that the following steps are included:
S1, fruits and vegetables rubbish obtain fruits and vegetables biogas slurry through anaerobic fermentation；
S2, fruits and vegetables biogas slurry, which are sent into flotation tank, carries out air-flotation process, and it is 4000~5000mg/L or so, ammonia nitrogen that air bearing, which is discharged COD,
Maintain 1500-1800mg/L；
S3, air bearing water outlet enter tubular ultra-filtration membrane and carry out cross-flow filtration, obtain level-one concentrated water and level-one produces water, level-one concentrated water contains
99% SS and colloidal substance, level-one produce water and contain ammonia nitrogen and organic matter；Air-flotation process is carried out in level-one concentrate recirculation to flotation tank,
Level-one production water enters second level nanometer film and is filtered；
S4, level-one, which produce water and obtain second level concentrated water and second level through second level nano-film filtration, produces water, and the content of organic matter of second level concentrated water >=
90%, second level concentrated water is concentrated to be made organic fertilizer；Second level produces water and enters deamination film processing system；
S5, second level production water enter deamination film processing system and first carry out pH value adjustment, so that free ammonia is ionized into ion ammonium, then pass through
The filtering of deamination film, obtains three-level concentrated water and three-level produces water, and ammonia-nitrogen content >=97% in three-level concentrated water, three-level concentrated water is concentrated to be made
Organic fertilizer, three-level produce water and give over to reuse.
2. a kind of biogas slurry recycling treatment process according to claim 1, characterized in that sewage enters in flotation tank, warp
The stop for spending 30 minutes, adds flocculant, and the scum layer of 3-5cm can be generated on flotation tank liquid level, using Slag Scraping Device by dross
It scrapes to dross reservoir.
3. a kind of biogas slurry recycling treatment process according to claim 1, characterized in that in step s3, the tubular type
Ultrafiltration membrane uses 4 times of recycle ratios, does not generate concentrated water.
4. a kind of biogas slurry recycling treatment process according to claim 1, characterized in that in step s3, air bearing water outlet
It is temporary to be introduced into intermediate pool progress water, is then fed into tubular ultra-filtration membrane.
5. a kind of biogas slurry recycling treatment process according to claim 1, characterized in that in step s 2, air bearing generates
Sludge flow into anaerobic fermentation tank ferment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910001448.8A CN109607870A (en) | 2019-01-02 | 2019-01-02 | A kind of biogas slurry recycling treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910001448.8A CN109607870A (en) | 2019-01-02 | 2019-01-02 | A kind of biogas slurry recycling treatment process |
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| CN109607870A true CN109607870A (en) | 2019-04-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386748A (en) * | 2019-08-21 | 2019-10-29 | 四川锐源能环科技有限公司 | A kind of sewage plant sludge harmless resource processing system and the method for producing humic acid |
| CN114506977A (en) * | 2022-02-18 | 2022-05-17 | 湖北中新开维现代牧业有限公司 | Method for recovering ammonia nitrogen from biogas slurry in farm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386748A (en) * | 2019-08-21 | 2019-10-29 | 四川锐源能环科技有限公司 | A kind of sewage plant sludge harmless resource processing system and the method for producing humic acid |
| CN114506977A (en) * | 2022-02-18 | 2022-05-17 | 湖北中新开维现代牧业有限公司 | Method for recovering ammonia nitrogen from biogas slurry in farm |
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Application publication date: 20190412 |
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