CN109399883A - A kind of method for anaerobic sludge digestion - Google Patents
A kind of method for anaerobic sludge digestion Download PDFInfo
- Publication number
- CN109399883A CN109399883A CN201811507587.XA CN201811507587A CN109399883A CN 109399883 A CN109399883 A CN 109399883A CN 201811507587 A CN201811507587 A CN 201811507587A CN 109399883 A CN109399883 A CN 109399883A
- Authority
- CN
- China
- Prior art keywords
- sludge
- plant
- digestion
- dry slag
- anaerobic
- 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.)
- Pending
Links
Classifications
-
- 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
- C12M1/107—Apparatus for enzymology or microbiology with means for collecting fermentation gases, e.g. methane
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/20—Total organic carbon [TOC]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Hydrology & Water Resources (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Microbiology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Biochemistry (AREA)
- Sustainable Development (AREA)
- Biomedical Technology (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of method for anaerobic sludge digestion, it includes step 1, food and drink grease is added in the dry slag of plant is stirred, and adds excess sludge and is mixed；Mixture obtained in the step 1 is carried out anaerobic digestion by step 2；The dry slag of plant is the withered dry slag of emergent aquactic plant or the dry slag of agricultural stalk；Excess sludge, food and drink grease, the dry slag of plant VS mass ratio be 1: 2: 0.2~2.The present invention improves the methane production of sludge, sludge can be prevented to be acidified again.
Description
Technical field
The present invention relates to field of environment protection, and in particular to a kind of method for anaerobic sludge digestion.
Background technique
In operation, sewage can generate a large amount of excess sludge for sewage treatment plant, by the end of the year in 2014, national sludge
Disposition amount is only 224.81 ten thousand tons/year, and up to 30,000,000 tons of sludge yield that China is annual, harmless treatment rate are practical not
Foot 10%.
It is more and more because anaerobic sludge digestion can be realized " minimizing, innoxious, recycling " processing to sludge
People is advocated, and in recent years, China also gradually recognizes the importance of anaerobic sludge digestion processing, has been carried out a series of theory and has been ground
Study carefully, carried out many engineering practices in succession, such as Shanghai White Long Gang, Hubei Xiangyang fishgarth continent, Dalian Dong Taixia man river, Qingdao City
The large size specific resistance to filtration case history such as Mai Dao, achieves certain achievement.Chongqing also establishes man, Tang Tuo Wushuichu in succession
The a batch such as reason factory, realgar sewage treatment plant are configured with the sewage treatment plant of specific resistance to filtration equipment, however, because of Chongqing region
Sludge shale is bad (sand content is big, the content of organic matter is low), and actual operational effect and expected design is caused still to have certain difference
Away from.Therefore, it is the key that limitation anaerobic sludge digestion technique is run in Chongqing region or even nationwide interior promote that shale is bad.
Chinese maintain the habit with grease culinary art cuisines all the time, and this cooking method is along with remaining grease
Discharge, especially in the area of the grease culinary art accustomed to using abundant such as Chongqing, Sichuan.Chongqing is known as the good reputation in " city of chafing dish ",
Flourishing chafing dish industry generates food and drink grease of the number in terms of ten thousand kilograms daily, contains a large amount of fat, grease, carbon in food and drink grease
Hydrate, carbohydrate and other organic matters, the content of organic matter is high, has very high calorific value, and the every kg volatility of food and drink grease is solid
Weight theory methane phase ability is up to 1014L.
If the food and drink grease of high organic content is added in sludge to be formed and digests matrix altogether, the methane production of sludge
Raising will be changed significantly.Although sludge oiling rouge improves methane phase ability, the disadvantage is that being easy acidification.
Summary of the invention
In view of the problems of the existing technology, the technical problem to be solved by the invention is to provide a kind of sludge anaerobics to disappear
Change method, it can improve the methane production of sludge, sludge can be prevented to be acidified again.
The technical problem to be solved by the present invention is in this way technical solution realize, it the following steps are included:
Food and drink grease is added in the dry slag of plant and is stirred by step 1, adds excess sludge and is mixed；
Mixture obtained in the step 1 is carried out anaerobic digestion by step 2.
The dry slag of plant is the withered dry slag of emergent aquactic plant or the dry slag of agricultural stalk.
The solution have the advantages that:
1, the dry slag of plant and three kinds of grease, sludge substances act synergistically, so that methane phase ability enhances, improve methane production
Rate；
2, the dry slag of plant digests after mixing with grease, alleviates the influence of mortifier, buffers noxious material, provides more alkali
Degree, it is therefore prevented that sludge acidification；
3, digestion matrix organic matter composition is adjusted, so that degradable material increases, hydrolysis rate increases.
Specific embodiment
Below with reference to embodiment, the invention will be further described:
The present embodiment are as follows:
Implement to prepare: gravity concentration being carried out to excess sludge, moisture content is about 96% after concentration；By the dry slag of plant rub to
About 2mm partial size, the fundamental property parameter of measurement digestion matrix: pH, TS (total solid), VS (volatile solid), TOC, TN.
Volatile solid VS refers to the part solid that can be volatilized under 550 degree of high temperature in total solid；Volatile solid VS
For biodegradable organic object amount can be passed through in sludge, food and drink grease and the dry slag of plant.
Step 1, food and drink grease are added in the dry slag of plant and are stirred mixing, add excess sludge and seed sludge into
Row mixing, the VS mass ratio of setting excess sludge, food and drink grease and the dry slag of plant, and mixed digestion substrate moisture content is
Between 20~30, seed sludge adds ratio and can be added according to volume ratio 96%~98%, C/N ratio (TOC/TN),
The volume ratio of seed sludge and digestion substrate to be seeded is 1: 1~3.
The mixture of step 1 is placed in anaerobic digestor by step 2, and inert gas is filled with after sealing ensures anaerobic environment,
Mix digestion substrate constantly using the mode of stirring or oscillation, reaction temperature is 37 DEG C ± 1, and pH value maintains 7~7.5, instead
It is 40~50 days between seasonable, reactor, which no longer generates biogas and reacts, to be stopped, and wherein the domestication time of seed sludge is 3~7 days,
Seed sludge dosage is bigger, and the domestication time is shorter.
It is collected using the gas that collection airbag generates reaction, and the micro flowmeter of using gas carries out gas volume
Test.The methane content in analysis measurement biogas is carried out using methane content analyzer or gas chromatographicanalyzer.
Excess sludge, food and drink grease, the dry slag of plant VS mass ratio be respectively 1: 0: 0,1: 0: 2,1: 2: 0,1: 2: 0.2,1
:2:1,1:2:2.Experimental measuring and gas production are shown in Table 1:
Table 1: example test result
As seen from Table 1: under conditions of VS is added than being 1: 2: 1, unit dosage methane production (341.5mL/g) is surplus
3.87 times of the remaining independent anaerobic digestion methane production (88.1mL/g) of sludge, are excess sludge and food and drink grease (1: 2: 0) methane
1.41 times of yield (241.6mL/g).
Test result shows: the present invention is 1: 2: 0.2~2 in the VS mass ratio of excess sludge, food and drink grease, the dry slag of plant
It is fairly obvious to the promotion of methane phase performance in range, improve methane production.
Claims (5)
1. a kind of method for anaerobic sludge digestion, characterized in that the following steps are included:
Food and drink grease is added in the dry slag of plant and is stirred by step 1, adds excess sludge and is mixed；
Mixture obtained in the step 1 is carried out anaerobic digestion by step 2.
2. method for anaerobic sludge digestion according to claim 1, it is characterized in that: the dry slag of the plant is withered emergent aquactic plant
Dry slag or the dry slag of agricultural stalk.
3. method for anaerobic sludge digestion according to claim 2, it is characterized in that: excess sludge, food and drink grease and plant are dry
The VS mass ratio of slag is 1: 2: 0.2~2.
4. method for anaerobic sludge digestion according to claim 3, it is characterized in that: excess sludge, food and drink grease and plant are dry
It is 20 ~ 30 that the mixed digestion substrate moisture content of the VS of slag, which is 96% ~ 98%, C/N ratio,.
5. method for anaerobic sludge digestion according to claim 4, it is characterized in that: the seed sludge of anaerobic digestion with mix after
Digestion substrate volume ratio be 1: 1~3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507587.XA CN109399883A (en) | 2018-12-11 | 2018-12-11 | A kind of method for anaerobic sludge digestion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507587.XA CN109399883A (en) | 2018-12-11 | 2018-12-11 | A kind of method for anaerobic sludge digestion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109399883A true CN109399883A (en) | 2019-03-01 |
Family
ID=65458313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507587.XA Pending CN109399883A (en) | 2018-12-11 | 2018-12-11 | A kind of method for anaerobic sludge digestion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109399883A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002015945A1 (en) * | 2000-08-22 | 2002-02-28 | Green Farm Energy A/S | Concept for slurry separation and biogas production |
| CN102352380A (en) * | 2011-10-14 | 2012-02-15 | 大连力达环境工程有限公司 | Food residue and sludge mixing anaerobic treatment method and system |
| CN102747107A (en) * | 2012-07-20 | 2012-10-24 | 北京化工大学 | Methane fermenting method |
-
2018
- 2018-12-11 CN CN201811507587.XA patent/CN109399883A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002015945A1 (en) * | 2000-08-22 | 2002-02-28 | Green Farm Energy A/S | Concept for slurry separation and biogas production |
| CN102352380A (en) * | 2011-10-14 | 2012-02-15 | 大连力达环境工程有限公司 | Food residue and sludge mixing anaerobic treatment method and system |
| CN102747107A (en) * | 2012-07-20 | 2012-10-24 | 北京化工大学 | Methane fermenting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| El-Mashad et al. | Biogas production from co-digestion of dairy manure and food waste | |
| Bah et al. | Evaluation of batch anaerobic co-digestion of palm pressed fiber and cattle manure under mesophilic conditions | |
| Kusch et al. | Biogas production with horse dung in solid-phase digestion systems | |
| Tambone et al. | Nitrogen mineralization from digestate in comparison to sewage sludge, compost and urea in a laboratory incubated soil experiment | |
| CN102559773B (en) | A kind of many raw materials mix the method that nearly synchronous fermentation synergism improves gas generation property | |
| Sales et al. | Use of Brazilian sugarcane bagasse ash in concrete as sand replacement | |
| Provenzano et al. | Chemical and spectroscopic characterization of organic matter during the anaerobic digestion and successive composting of pig slurry | |
| Fernández et al. | Use of thermal analysis techniques (TG–DSC) for the characterization of diverse organic municipal waste streams to predict biological stability prior to land application | |
| CN103588519A (en) | MS preparation organic bio-fertilizer and preparation method thereof | |
| CN102898196A (en) | Organic fertilizer using chicken manure and mushroom dreg as raw materials and preparation technology | |
| Siles et al. | Biomethanization of waste derived from strawberry processing: Advantages of pretreatment | |
| CN1673191A (en) | Organic fertilizer prepared with bamboo waste and its prepn process | |
| CN102603379A (en) | Processing method for organic solid waste | |
| CN105084957A (en) | Method for preparing bio-organic fertilizer from filter residues produced after anaerobic fermentation of kitchen waste and application of bio-organic fertilizer | |
| Cheng et al. | Promoting the production of methane on the co-digestion of food waste and sewage sludge by aerobic pre-treatment | |
| Zazouli et al. | Evaluation of cow manure effect as bulking agent on concentration of heavy metals in municipal sewage sludge vermicomposting | |
| Pangallo et al. | The fate of biodegradable plastic during the anaerobic co-digestion of excess sludge and organic fraction of municipal solid waste | |
| CN109399883A (en) | A kind of method for anaerobic sludge digestion | |
| Shaarani et al. | Co-composting landfill leachate with sugarcane bagasse for biofertilizer production | |
| Odekanle et al. | Anaerobic treatment of abattoir waste: biogas production and correlation parameter in a batch reactor system | |
| CN108358719A (en) | Organic fertilizer and preparation method thereof is made using multiclass stalk | |
| Ebunilo et al. | Comparative analysis of biogas yield from different composition of domestic wastes from Benin City, Nigeria | |
| CN105439507B (en) | Body of residue stabilization containing cadmium and preparation method thereof | |
| CN109206161A (en) | A kind of organic fertilizer based on the fermentation of miscellaneous tree branch | |
| Bień et al. | Composting process as an alternative method for the disposal of sewage sludge and organic fraction of municipal solid waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190301 |