CN110498584A - A kind of municipal sludge fermentation assistant - Google Patents
A kind of municipal sludge fermentation assistant Download PDFInfo
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- CN110498584A CN110498584A CN201910704399.4A CN201910704399A CN110498584A CN 110498584 A CN110498584 A CN 110498584A CN 201910704399 A CN201910704399 A CN 201910704399A CN 110498584 A CN110498584 A CN 110498584A
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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
- 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
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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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
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of municipal sludge fermentation assistant and its application method, including 10-30 parts of flyash, 20-50 parts of chitosan derivatives, 5-30 parts of aluminum sulfate, 10-30 parts of biological enzyme, 5-30 parts and 20-50 parts of zymophyte fermentation material of ferric trichloride, it is 100 parts total, fermentation assistant provided by the invention can be used in compounding with biological flocculant zymophyte fermentation material, and dirty dehydration can be made before fermentation, prevent the more growth and breeding for influencing aerobic bacteria of moisture in sludge, inorganic and organic flocculant setting can keep fluid channel in sludge internal build skeleton, reduce the interfacial tension between solid-liquid, it is released moisture contained in sludge wadding body grid, to be conducive to the abjection of the moisture depth in sludge, simultaneously, and it is cooperated by organic matter and zymophyte, it can add The reaction process of fast compost shortens the compost reaction time, and the present invention has many advantages, such as that dehydration is rapid, accelerates the reaction process of compost, shorten the compost reaction time, be suitable for needing for user.
Description
Technical field
The present invention relates to field of environmental engineering, and in particular to a kind of municipal sludge fermentation assistant.
Background technique
Municipal sludge is the waste of solid-state caused by the purified treatment sewage of city, semisolid and liquid, enormous amount
Rapid development, it mainly comes from Sludge from primary sedimentation tank and residual active sludge.It is dirty with the development of domestic municipal wastewater processing cause
The total treating capacity of water factory and degree for the treatment of constantly will expand and improve, and the municipal sludge amount of generation also increasingly increases.At municipal sewage
The sludge for managing factory includes the floccule of the solid particles such as silt, fiber, plant and animal residues in waste water and its condensation, by a variety of micro-
The biological zoogloea formed and its organic matter, heavy metal element and the salt of absorption, a small amount of pathogenic microorganism, parasitic ovum etc.
Integrated solid material.Sludge is easily degenerated smelly, and if not being pocessed any discharge can cause serious pollution to environment.
The treatment approach of sludge mainly includes the sides such as sanitary landfills after land use, desiccation, burning disposal and water body consumption
Method, although these methods can accommodate a large amount of sludge, there are still technology not yet full maturitys, occupy large amount of land resources,
The problems such as comprehensive utilization of mud efficiency is relatively low.
China is a large agricultural country, and the land use of sludge should be the main direction of development of sludge treatment.With state
Requirement of the family to environmental improvement standard is increasingly stringenter, and scale sewage treatment plant necessarily gradually increases.China has been put into effect at present
The sludge that sewage treatment plant generates can be used for landfill and urban afforestation by multinomial policy and standard after being effectively treated, or
Sludge is made into matrix production compound fertilizer and is used for agricultural etc..But as in sludge management aspect to pathogen, a huge sum of money contained by sludge
Belong to and the attention degree of the organoleptic indicators such as the physical and chemical indexes and foul smell control such as harmful organic substance is high not enough and treatment process in
The problems such as odor pollution of generation and excessive treated output object alkalinity, greatly limit the resource utilization to sludge.
The quantity of effective viable bacteria is lower in current fermentation process, and beneficial microorganism survival volume is lower, the content of organic matter
It is higher compared with low-heavy metal content, cause second-rate, the solution generally used is first to improve sludge, reduces sludge
Moisture and harmful substance after ferment again, cause entire fermentation process complex.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of dehydrations rapidly, reduces harmful organism content, improves number of viable
Compound municipal sludge fermentation assistant.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of municipal sludge fermentation assistant, the hair
Ferment auxiliary agent is made of following parts by weight raw material:
10-30 parts of flyash, 20-50 parts of chitosan derivatives, 5-30 parts of aluminum sulfate, 10-30 parts of biological enzyme, ferric trichloride
5-30 parts and 20-50 parts of zymophyte fermentation material, amount to 100 parts.
Further, the chitosan derivatives are the polymer of chitosan and acrylic amide graft copolymerization.
Further, the powder size of the flyash is 150-250 mesh.
Further, the zymophyte fermentation material is the mixed bacteria of anaerobic bacteria or aerobic bacteria through everfermentation product pile fermentation
Fermentation material.
Further, the anaerobic bacteria include the thermophilic micrococcus luteus of methane, it is lactobacillus plantarum, thermophilic metal fever anaerobic bacillus(cillus anaerobicus), white
Color thermophilic actinomycete it is one or more.
Further, the aerobic bacteria includes one kind or more of trichoderma reesei, German-style lactic acid Bacillus acidi lactici, vibrio proteolyticus
Kind.
Further, the fermentation product of the pile fermentation are made of following parts by weight raw material:
20-50 parts of sucrose, 30-60 parts of biomass, 10-40 parts of sodium nitrate amount to 100 parts.
Further, the biomass is one or more of after air-drying, grinding of sawdust, peanut shell or rice straw
Grain substance.
Further, the particle size of the biomass is 0.150-0.425mm.
Further, the biological enzyme is that cellulase, pectase and lipase are mixed according to the ratio of the amount 3:4:5 of substance
It closes.
Compared with prior art, the advantages and positive effects of the present invention are:
1. a kind of municipal sludge fermentation assistant provided by the invention, can by the setting of biological enzyme and zymophyte fermentation material
Effectively to the organic matter in sludge, the complexity organic matter such as cellulose, lignin, pectin is decomposed, and anaerobic bacteria with it is aerobic
The combination settings of bacterium can play facilitation effect to fermentation, and can decompose to stink, inhibit the life of putrefactive microorganisms
It the features such as long, and the strain that the present invention uses is active by force, breeding is fast, decomposing organic matter is rapid, can by cooperating
Accelerate the reaction process of compost, shortens the compost reaction time, by the way that original fermentation can be assisted to reasonable employment of the invention
Agent, further decomposing organic matter improve the organic matter and humus of organic fertilizer, enhance organic fertilizer nitrogen fixing capacity and phosphorus it is water-soluble
Property, more adapt to the needs of user.
2. a kind of municipal sludge fermentation assistant provided by the invention, passes through flocculation aid flyash；Inorganic flocculating agent aluminum sulfate,
Ferric trichloride；Organic flocculant chitosan derivatives and biological enzyme；With being used in compounding for biological flocculant zymophyte fermentation material, energy
It is enough to make dirty dehydration before fermentation, prevent the more growth and breeding for influencing aerobic bacteria of moisture in sludge, can inside sludge structure
It builds skeleton and keeps fluid channel, reduce the interfacial tension between solid-liquid, be released moisture contained in sludge wadding body grid,
To be conducive to the abjection of the moisture depth in sludge.Simultaneously because the reduction of interfacial tension, reduces the anti-shearing of sludge wadding body
Power and rheological characteristic reduce the energy consumption of operating process such as being stirred, meanwhile, by changing in alkaline environment and destroying in water
The organic constitution of colloidal grain surface, keep flocculant or coagulant more direct and colloidal solid and structure change it is molten
The organic matter effect of solution property can make the municipal sludge fast dewatering of high-moisture to achieve the effect that enhanced coagulation accelerates filtering,
The present invention is rapid with dehydration, does not increase sludge weight, more adapts to the needs of user.
3. chitosan derivatives provided by the present invention are chitosan and acrylamide grafted copolymer, chitosan derivatives
Flocculating property be better than the flocculating property of chitosan or polyacrylamide, the mould fermentation material of fermentation provided by the present invention be
The fermentation material that pile fermentation obtains in the environment of high sugar high nitrogen under the alkalescence environment of pH6-8, has excellent flocculating property, and
And zymogenic growth can be promoted, more adapt to the needs of user.
Specific embodiment
In order to better understand the present invention, the present invention is further described combined with specific embodiments below.
Embodiment 1:
A kind of municipal sludge fermentation assistant, fermentation assistant are made of following parts by weight raw material:
Flyash (200 mesh) 30g, chitosan derivatives 90g, aluminum sulfate 30g, biological enzyme 30g, ferric trichloride 30g and hair
Ferment product 90g.
Fermentation product include sucrose 36g, biomass 36g, sodium nitrate 18g.
Biomass is the particulate matter that peanut shell and rice straw are 0.300mm by the particle size for air-drying, being ground into.
300g fermentation assistant is added into 10kg pending mud, stirs for a kind of application method of municipal sludge fermentation assistant
It mixes 15 minutes, as experimental group A.
Embodiment 2:
A kind of municipal sludge fermentation assistant, fermentation assistant are made of following parts by weight raw material:
Flyash (200 mesh) 60g, chitosan derivatives 60g, aluminum sulfate 45g, biological enzyme 30g, ferric trichloride 45g and hair
60g parts of ferment product.
Fermentation product include sucrose 12g, biomass 36g, sodium nitrate 12g.
Biomass is the particulate matter that peanut shell and rice straw are 0.300mm by the particle size for air-drying, being ground into.
300g fermentation assistant is added into 10kg pending mud, stirs for a kind of application method of municipal sludge fermentation assistant
It mixes 15 minutes, as experimental group B.
Embodiment 3:
A kind of municipal sludge fermentation assistant, fermentation assistant are made of following parts by weight raw material:
Flyash (200 mesh) 30g, chitosan derivatives 90g, aluminum sulfate 30g, biological enzyme 30g, ferric trichloride 30g and hair
Yeast-like fungi fermentation material 90g.
It will be by weight sucrose 32g, the fermentation product of biomass 24g, sodium nitrate 16g are stirred at sterilizing
Then fermentation product are put into fermentor by reason, then will be using potato starch as anaerobic fermentation bacterium 10g (methane the is thermophilic microballoon of carrier
Bacterium 13 × 109CFU/g, lactobacillus plantarum 9 × 109CFU/g it) is put into fermentor, the temperature of fermentor is adjusted to 80 DEG C, is stirred
Mixing revolving speed is 5rpm, starts to ferment, and is passed through nitrogen when the pH for the product that ferment is lower than 6.5, the pH of fermentation product is made to be maintained at 7 ± 0.5,
It ferments the preparation for completing zymophyte fermentation material in 1 day.
Biomass is the particulate matter that peanut shell and rice straw are 0.300mm by the particle size for air-drying, being ground into.
It carries out zymophyte fermentation material and other ingredients to be mixed and made into fermentation assistant, it then will be to 10kg pending mud
Middle addition 300g fermentation assistant, is passed through nitrogen and stirs 15min, then ferments for 25 DEG C, is used as experimental group C after fermentation 7 days.
Embodiment 4:
A kind of municipal sludge fermentation assistant, fermentation assistant are made of following parts by weight raw material:
Flyash (200 mesh) 30g, chitosan derivatives 90g, aluminum sulfate 30g, biological enzyme 30g, ferric trichloride 30g and hair
Yeast-like fungi fermentation material 90g.
It will be by weight sucrose 32g, the fermentation product of biomass 24g, sodium nitrate 16g are stirred at sterilizing
Reason, fermentation product are then put into fermentor, then by 10g using cornstarch as carrier aerobic fermentation bacterium (trichoderma reesei 25 ×
109CFU/g, vibrio proteolyticus 13 × 109CFU/g it) is put into fermentor, the temperature of fermentor is adjusted to 40 DEG C, speed of agitator
For 35rpm, starts to ferment, be continually fed into filtrated air, the preparation for completing zymophyte fermentation material in 1 day of fermenting.
Biomass is the particulate matter that peanut shell and rice straw are 0.300mm by the particle size for air-drying, being ground into.
It carries out zymophyte fermentation material and other ingredients to be mixed and made into fermentation assistant, it then will be to 10kg pending mud
Middle addition 300g fermentation assistant, and 15min is stirred, it then ferments for 25 DEG C, is used as experimental group D after fermentation 7 days.
Embodiment 5:
Fermentation assistant is made of following parts by weight raw material: flyash (200 mesh) 90g, chitosan 90g, aluminum sulfate
60g, ferric trichloride 60g.
300g fermentation assistant is added into 10kg pending mud, stirs for a kind of application method of municipal sludge fermentation assistant
Mix 15 minutes, as a control group A.
The resistivity and cake moisture tested out after taking the sludge agitation for not adding any medicament uniform is as blank group A.
Embodiment 6:
Experimental group A made from the embodiment of the present invention 1-5, experimental group B, experimental group C and experimental group D and control group are carried out
Contrast test, the sludge that this experiment uses are the municipal sludges of water content 98%, the content of organic matter 38.3%.
1. than resistance value and moisture determination: after taking the sludge agitation of experimental group A, experimental group B, control group A configuration uniform, warp
Circulating pump test resistivity and cake moisture are crossed, experimental group A, experimental group B, control group A and blank group A are compared, as a result
It is shown in Table 1.
The ratio resistance value and moisture determination result of 1: five kind of sludge of table
| Experimental group A | Experimental group B | Control group A | Blank group A | |
| Than resistance value (m/kg) | 5.9×1010 | 6.2×1010 | 1.6×1011 | 2×1013 |
| Cake moisture | 61.38% | 69.52% | 80.23% | 86.47% |
As can be seen from Table 1, experimental group A, the ratio resistance value of sludge in experimental group B are lower, and water content is also less, dehydration effect
Fruit gets well than control group A, it can be seen that, the effect of the biofermentation auxiliary agent of organo-mineral complexing is preferable, and performance is more stable, and
And the flocculating effect of chitosan derivatives is better than chitosan, and in a certain range, the content of chitosan derivatives is more, hair
The flocculating effect of ferment auxiliary agent is better, more preferable to the dehydrating effect of sludge.
2. squeezing the measurement of experiment: taking the sludge of experimental group A, experimental group B and control group A, use filter area respectively
200m2Diaphragm pressing machine filter-press dehydration (feed pressure 0.5Mpa, squeeze time 20min, squeeze pressure 1.5Mpa) measure it
Feed time and discharging moisture content, the results are shown in Table 2.
Table 2: squeezing measuring feed time and discharging moisture content
| Experimental group A | Experimental group B | Control group | |
| Feed time (min) | 70 | 70 | 80 |
| Discharge moisture content | 54.15% | 56.26% | 63.46% |
As can be seen from Table 2, experimental group A, the water content of sludge in experimental group B are less, and dehydrating effect is than control group A
It is good, it can be seen that, the effect of the biofermentation auxiliary agent of organo-mineral complexing is preferable, and performance is more stable, and chitosan derivative
The flocculating effect of object is better than chitosan, and the content of chitosan derivatives and zymophyte fermentation material is more in a certain range,
The flocculating effect of fermentation assistant is better, more preferable to the dehydrating effect of sludge, and the feed time of experimental group A, experimental group B are most short,
Operating condition is preferable, and the mud cake of squeezing is more firm easy to fall off.
2. the measurement of composition quality score: taking the sludge of experimental group C, experimental group D and control group A, carry out organic matter respectively
Mass fraction, the mass fraction of total nutrient, the mass fraction of moisture and pH value measurement, the results are shown in Table 3.
Table 3: the mass fraction of ingredient
| Experimental group C | Experimental group D | Control group A | |
| The mass fraction (%) of organic matter | 48.6 | 49.1 | 38.3 |
| The mass fraction (%) of total nutrient | 5.5 | 5.3 | 3.2 |
| PH value | 6.4 | 6.4 | 8.2 |
As can be seen from Table 3, in experimental group C and experimental group D, the mass fraction of organic matter and the mass fraction of total nutrient are remote
Much larger than control group A, it is seen that the sludge after fermentation assistant provided by the invention fermentation is more suitable for the existence of earthworm, and adjusts
PH value subacidity after reason is more suitable for the cultivation of earthworm between 6-8.
4. the measurement of micro-flora content: taking the sludge of experimental group C, experimental group D and control group A, carry out roundworm egg quantity respectively
Measurement, colibacillus of excrement flora number, living bacteria count and heavy metal chromium content measurement, the results are shown in Table 4.
Table 4: the measurement of micro-flora content and heavy metal
As can be seen from Table 4, experimental group C, the living bacteria count of sludge in experimental group D are more, colibacillus of excrement group's number
It is less with roundworm egg, it is suitable for subsequent planting, vermiculture or further fermentation.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It should not be considered as limiting the scope of the invention.All changes and improvements made in accordance with the scope of the present invention, should all
It still belongs within this patent covering scope.
Claims (10)
1. a kind of municipal sludge fermentation assistant, it is characterised in that: the fermentation assistant is made of following parts by weight raw material:
10-30 parts of flyash, 20-50 parts of chitosan derivatives, 5-30 parts of aluminum sulfate, 10-30 parts of biological enzyme, ferric trichloride 5-30
Part and 20-50 part of zymophyte fermentation material, total 100 parts.
2. a kind of municipal sludge fermentation assistant according to claim 1, it is characterised in that: the chitosan derivatives are shell
The polymer of glycan and acrylic amide graft copolymerization.
3. a kind of municipal sludge fermentation assistant according to claim 1, it is characterised in that: the powder size of the flyash
For 150-250 mesh.
4. a kind of municipal sludge fermentation assistant according to claim 1, it is characterised in that: the zymophyte fermentation material is to detest
Fermentation material of the mixed bacteria of oxygen bacterium or aerobic bacteria through everfermentation product pile fermentation.
5. a kind of municipal sludge fermentation assistant according to claim 4, it is characterised in that: the anaerobic bacteria includes that methane is thermophilic
Hot micrococcus luteus, lactobacillus plantarum, thermophilic metal fever anaerobic bacillus(cillus anaerobicus), Thermoactinomyces albus it is one or more.
6. a kind of municipal sludge fermentation assistant according to claim 4, it is characterised in that: the aerobic bacteria includes Richter scale wood
Mould, German-style lactic acid Bacillus acidi lactici, vibrio proteolyticus it is one or more.
7. a kind of municipal sludge fermentation assistant according to claim 4, it is characterised in that: the fermentation product of the pile fermentation
It is made of following parts by weight raw material:
20-50 parts of sucrose, 30-60 parts of biomass, 10-40 parts of sodium nitrate amount to 100 parts.
8. a kind of municipal sludge fermentation assistant according to claim 7, it is characterised in that: the biomass is sawdust, flower
One or more of particulate matters after air-drying, grinding of raw shell or rice straw.
9. a kind of municipal sludge fermentation assistant according to claim 7, it is characterised in that: the particle size of the biomass
It is 0.150-0.425mm.
10. a kind of municipal sludge fermentation assistant according to claim 1, it is characterised in that: the biological enzyme is cellulose
Enzyme, pectase and lipase are mixed according to the ratio of the amount 3:4:5 of substance.
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| CN201910704399.4A CN110498584B (en) | 2019-07-31 | 2019-07-31 | Municipal sludge fermentation aid |
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