CN110468164A - A method of promoting sludge anaerobic fermenting and producing volatile fatty acid - Google Patents
A method of promoting sludge anaerobic fermenting and producing volatile fatty acid Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 21
- 235000014113 dietary fatty acids Nutrition 0.000 title claims abstract description 17
- 229930195729 fatty acid Natural products 0.000 title claims abstract description 17
- 239000000194 fatty acid Substances 0.000 title claims abstract description 17
- 150000004665 fatty acids Chemical class 0.000 title claims abstract description 17
- 230000001737 promoting effect Effects 0.000 title claims description 10
- 238000000855 fermentation Methods 0.000 claims abstract description 60
- 230000004151 fermentation Effects 0.000 claims abstract description 42
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010865 sewage Substances 0.000 claims abstract description 12
- 239000006228 supernatant Substances 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 238000004062 sedimentation Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 229910019142 PO4 Inorganic materials 0.000 abstract description 17
- 239000007788 liquid Substances 0.000 abstract description 15
- 239000010452 phosphate Substances 0.000 abstract description 15
- 239000002253 acid Substances 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 239000011575 calcium Substances 0.000 description 15
- 239000000758 substrate Substances 0.000 description 15
- 239000005416 organic matter Substances 0.000 description 11
- -1 phosphate radical Chemical class 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 244000005700 microbiome Species 0.000 description 10
- 239000011521 glass Substances 0.000 description 8
- 238000010907 mechanical stirring Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- 230000003993 interaction Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000020477 pH reduction Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003694 hair properties Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/40—Preparation of oxygen-containing organic compounds containing a carboxyl group including Peroxycarboxylic acids
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- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to Treatment of Sludge and application technology as the second resource fields, are related to a kind of method using calcium hypochlorite reinforcement sludge anaerobic fermentation production volatile fatty acid efficiency.Method includes the following steps: secondary sedimentation tank of sewage treatment work sludge is put into the quiet heavy removal supernatant of container by (1), sludge condensation sample is obtained；(2) calcium hypochlorite is added into mud sample, nitrogen charging drives oxygen, seals reactor, controls fermentation temperature and time, fermentation and acid, while reducing the concentration of phosphate radical in fermentation liquid.The present invention can synchronize the minimizing and recycling for realizing sludge, provide a kind of cost-effective technical measures for Treatment of Sludge.
Description
Technical field
The invention belongs to environmental protection and resource technologies, wave more particularly to a kind of promotion sludge anaerobic fermenting and producing
The method of hair property fatty acid.
Background technique
With the development of urbanization process, municipal sewage collection system rate is continuously improved, the production of excess sludge (WAS) at the same time
Amount is also sharply increasing.How safely and effectively to handle treating excess sludge is always the hot issue for perplexing environmental area.Detest
Aerobe fermentation is one of effective disposal options of organic waste.Intermediate product of the volatile fatty acid (VFAs) as anaerobic fermentation,
It is the important organic substrates of biosynthesis plastics (PHA), microbiological fuel cell (MFC).In addition, VFAs is alternatively arranged as at sewage
Effective carbon source of factory is managed, to improve the efficiency of sewage denitrification and dephosphorization.Therefore, in recent years, efficiently produced using WAS as fermentation substrate
VFAs obtains the more and more extensive concern of environmental area.Handled by way of anaerobic fermentation WAS can synchronize realization its subtract
Quantization, stabilisation and recycling.
WAS wadding body is the organic substrates bonded together with flocculation by extracellular polymeric (EPS), special construction
Hinder functional flora with can be utilized between substrate effectively contacting.Therefore, the dissolution of anaerobic fermentation and hydrolytic process are main
Deliquescent small-molecule substance, which is converted, by the larger molecular organics matter of the reunion in sludge utilizes production acid for fermentative microorganism,
Rate is generally slower, and is typically considered the rate-limiting step of anaerobic fermentation whole process.Existing research mostly pass through oxygenation pretreatment,
The modes such as ultrasonic pretreatment, enzymatic treatment improve the dissolution and hydrolytic process of sludge, and then improve the effect of WAS anaerobic fermentation
Rate.However, these processing modes often have energy consumption height, chemical agent additive amount easily causes greatly secondary environmental pollution, operates item
The defects of part is complicated limits its large-scale application in practical projects.In addition, existing research is mostly focused on simple promotion
The yield of VFAs, and seldom pay close attention to Characteristics of Fermentation Broth.It will be with a large amount of phosphate (PO in sludge anaerobic fermentation process4 3--
Discharging into fermentation liquid P), and hydrolysis acidification efficiency high-releasing amount is bigger.When as sewage treatment plant's additional carbon
When, it is phosphatic in fermentation liquid largely to exist and will increase the phosphorus load of sewage plant, to reduce the utility value of fermentation liquid.It cuts
To currently, related utilize Ca (ClO)2The dissolution and hydrolytic process for promoting WAS, to improve anaerobic fermentation efficiency and reduce fermentation
The research of phosphate concn has not been reported in liquid.
Summary of the invention
Goal of the invention: being directed to the above-mentioned prior art, and this application provides a kind of strengthened using calcium hypochlorite, and sludge to be promoted to detest
The method of aerobe fermentation production volatile fatty acid.
Technical solution: a kind of method promoting sludge anaerobic fermenting and producing volatile fatty acid of the present invention, including
Following steps:
(1) the secondary settling tank sludge of sewage treatment plant is collected, standing sedimentation removes supernatant, obtains mud sample；
(2) mud sample that step (1) processing obtains is placed in reactor, calcium hypochlorite is added, by reactor nitrogen charging
It is sealed after driving oxygen, stirring keeps reaction system material mixing uniform, fermenting and producing volatile fatty acid.
In step (1), the standing sedimentation refers to naturally quiet under the conditions of 4 DEG C sink for 24 hours.
In step (2), the dosage of the calcium hypochlorite and the weight ratio of mud sample are 0.005~0.1: 1.
Comprehensively consider the relationship of the cumulative production of cost of material and volatile fatty acid, in step (2), the calcium hypochlorite
Dosage and the weight ratio of mud sample be preferably 0.01~0.05: 1.
In step (2), keep reaction system material mixing uniform with 120~150rpm/min of revolving speed stirring.
In step (2), 25 DEG C -35 DEG C of fermentation temperature, the time is 4~12d.
After this method is handled, synchronizing realizes sludge reduction and recycling, effectively increases VFAs in fermentation liquid
Yield, and effectively reduce the concentration of phosphate radical in fermentation liquid.
The present invention utilizes Ca (ClO)2The basic principle of reinforcement sludge anaerobic fermentation production volatile fatty acid efficiency is:
WAS anaerobic fermentation process mainly includes the dissolution and hydrolysis of graininess organic matter, the acidification of hydrolysate and the first of acidizing product
Alkanisation three phases, wherein the dissolution and hydrolysis of graininess organic matter are the speed limit sexual stages that entire fermentation process is effectively run.
Ca(ClO)2As a kind of oxidant and disinfectant being widely used, WAS can be promoted by being added in anaerobic fermentation system
Dissolution and hydrolysis be mainly due to following two aspect: on the one hand, calcium hypochlorite itself, which belongs to a kind of weak oxidant, to be destroyed
Sludge flocculation structure discharges organic substrates；On the other hand, calcium hypochlorite, which is added to decompose in water phase, generates OCl-, OCl-
It can induce and generate living radical species (OH).The formation of OH (oxidation-reduction potential 2.8V) can effectively destroy dirt
Mud EPS and cell wall structure cause a large amount of organic matter to be discharged into liquid phase, for acid-producing microorganisms provide it is sufficient can be by effective benefit
Organic substrates, to promote the accumulation of VFAs.In addition, PO4 3-- P is largely discharged as the by-product of WAS hydrolysis acidification
Into fermentation liquid, PO in fermentation liquid is reduced4 3-The content of-P is conducive to improve its exploitation value as sewage treatment plant's additional carbon
Value.Calcium salt can be with PO4 3-- P generates chemical reaction and generates precipitating.Therefore, Ca (ClO)2Addition can not only promote WAS's
Hydrolysis Acidification, improves the yield of VFAs, while can be effectively reduced the concentration of phosphate radical in fermentation liquid, improves fermentation liquid
Quality.
The utility model has the advantages that being compared to the prior art, the application has the advantage that (1) using sludge as raw material by detesting
Aerobe fermentation produces VFAs, is a kind of synchronous effective measures for realizing sludge reduction and recycling.(2) VFAs is sludge anaerobic hair
A kind of important intermediate product, can be used as the raw material of the substances such as synthetic paint, coating and cosmetics during ferment, be also simultaneously
The essential organic carbon source of bio-denitrifying sewage dephosphorization can effectively make up municipal sewage plant's biological carbon and phosphorous removal work
The insufficient defect of organic carbon source in skill.(3)Ca(ClO)2Addition can breaking sludge cell, discharge intracellular, extracellular organic component
It enters in fermentation liquid, provides more organic substrates for acid-producing microorganisms, promote the accumulation of VFAs in fermentation system.Together
When, the release of calcium ion can be with PO in fermentation liquid4 3-- P, which is combined, generates precipitating, and the concentration of phosphate radical in fermentation liquid is effectively reduced,
Improve the quality of fermentation liquid.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
The present invention tests sludge used and is derived from municipal sewage plant secondary settling tank sludge, and naturally quiet heavy heel row for 24 hours is removed under the conditions of 4 DEG C
The excess sludge main character that supernatant obtains is as follows: suspended solid concentration (TSS) 20300 ± 170mg/L, volatile solid
Concentration (VSS) 12400 ± 180mg/L, total 19032 ± 170mg/L of COD, dissolubility 150 ± 17mg/L of COD, gross protein
9006 ± 170mg/L, 1000 ± 170mg/L of total carbohydrates.
VFAs concentration uses gas chromatographic detection (Agilent 6890), and phosphate concentration measurement uses antimony P-Mo blue colorimetric
Method.
Embodiment 1
It (1) is to be added through naturally quiet heavy heel row for 24 hours in 5.0L organic glass reactor except supernatant obtains in swept volume
Excess sludge (pH=6.8) as anaerobic fermentation production VFAs substrate；
(2) Ca (ClO) is added into reactor2Dosage be 0.005g/g TSS when, by reactor nitrogen charging drive oxygen
10min seals reactor, using mechanical stirring that reaction system material mixing is uniform.Pass through microorganism in sludge and Ca
(ClO)2Interaction, realize sludge in organic matter effective conversion.Wherein control fermentation reaction temperature is 35 ± 1 DEG C, hair
The control of ferment number of days is 9d, and the maximum level of VFAs is 1608.5mg/L (with chemical oxygen demand meter), and the concentration of phosphate radical is
25.3mg/L。
Embodiment 2
It (1) is to be added through naturally quiet heavy heel row for 24 hours in 5.0L organic glass reactor except supernatant obtains in swept volume
Excess sludge (pH=6.8) as anaerobic fermentation production VFAs substrate；
(2) Ca (ClO) is added into reactor2Dosage be 0.01g/g TSS when, by reactor nitrogen charging drive oxygen 10min,
Reactor is sealed, it is using mechanical stirring that reaction system material mixing is uniform.Pass through microorganism in sludge and calcium hypochlorite
Effective conversion of organic matter in sludge is realized in interaction.Wherein control fermentation reaction temperature is 25 ± 1 DEG C, and fermentation number of days is
The maximum level of 12d, the VFAs of production are 1320.2mg/L (with chemical oxygen demand meter), and the concentration of phosphate radical is 17.6mg/L.
Embodiment 3
It (1) is to be added through naturally quiet heavy heel row for 24 hours in 5.0L organic glass reactor except supernatant obtains in swept volume
Excess sludge (pH=6.8) as anaerobic fermentation production VFAs substrate；
(2) Ca (ClO) is added into reactor2Dosage be 0.01g/g TSS when, by reactor nitrogen charging drive oxygen 10min,
Reactor is sealed, it is using mechanical stirring that reaction system material mixing is uniform.Pass through microorganism in sludge and calcium hypochlorite
Effective conversion of organic matter in sludge is realized in interaction.Wherein control fermentation reaction temperature is 35 ± 1 DEG C, and fermentation number of days is
The maximum level of 9d, the VFAs of production are 2156.3mg/L (with chemical oxygen demand meter), and the concentration of phosphate radical is 55.3mg/L.
Embodiment 4
It (1) is to be added through naturally quiet heavy heel row for 24 hours in 5.0L organic glass reactor except supernatant obtains in swept volume
Excess sludge (pH=6.8) as anaerobic fermentation production VFAs substrate；
(2) Ca (ClO) is added into reactor2Dosage be 0.05g/g TSS when, by reactor nitrogen charging drive oxygen 10min,
Reactor is sealed, it is using mechanical stirring that reaction system material mixing is uniform.Pass through microorganism in sludge and calcium hypochlorite
Effective conversion of organic matter in sludge is realized in interaction.Wherein control fermentation reaction temperature is 35 ± 1 DEG C, and fermentation number of days is
The maximum level of 10d, the VFAs of production are 2081.4mg/L (with chemical oxygen demand meter), and the concentration of phosphate radical is 32.6mg/L.
Embodiment 5
It (1) is to be added through naturally quiet heavy heel row for 24 hours in 5.0L organic glass reactor except supernatant obtains in swept volume
Excess sludge (pH=6.8) as anaerobic fermentation production VFAs substrate；
(2) Ca (ClO) is added into reactor2Dosage be 0.1g/g TSS constantly, by reactor nitrogen charging drive oxygen
10min seals reactor, using mechanical stirring that reaction system material mixing is uniform.Pass through microorganism in sludge and time chlorine
Effective conversion of organic matter in sludge is realized in the interaction of sour calcium.Wherein control fermentation reaction temperature is 35 ± 1 DEG C, fermentation
Number of days is 10d, and the content of the VFAs of production is 1060.1mg/L (with chemical oxygen demand meter), and the concentration of phosphate radical is 18.8mg/
L。
Embodiment 6
It (1) is to be added through naturally quiet heavy heel row for 24 hours in 5.0L organic glass reactor except supernatant obtains in swept volume
Excess sludge (pH=6.8) as anaerobic fermentation production VFAs substrate；
(2) Ca (ClO) is added into reactor2Dosage be 0.01g/g TSS when, by reactor nitrogen charging drive oxygen 10min,
Reactor is sealed, it is using mechanical stirring that reaction system material mixing is uniform.Pass through microorganism in sludge and calcium hypochlorite
Effective conversion of organic matter in sludge is realized in interaction.Wherein control fermentation reaction temperature is 35 ± 1 DEG C, and fermentation number of days is
The maximum level of 4d, the VFAs of production are 1637.0mg/L (with chemical oxygen demand meter), and the concentration of phosphate radical is 123.5mg/L.
Embodiment 7
It (1) is to be added through naturally quiet heavy heel row for 24 hours in 5.0L organic glass reactor except supernatant obtains in swept volume
Excess sludge (pH=6.8) as anaerobic fermentation production VFAs substrate (i.e. mud sample, following embodiment are same)；
(2) Ca (ClO) is added into reactor2Dosage be 0.01g/g TSS constantly, by reactor nitrogen charging drive oxygen
10min seals reactor, using mechanical stirring that reaction system material mixing is uniform.Pass through microorganism in sludge and time chlorine
Effective conversion of organic matter in sludge is realized in the interaction of sour calcium.Wherein control fermentation reaction temperature is 35 ± 1 DEG C, fermentation
Number of days is 12d, and the content of the VFAs of production is 1565.8mg/L (with chemical oxygen demand meter), and the concentration of phosphate radical is 13.3mg/
L。
Comparative example 1
It is to be added after naturally quiet sink for 24 hours in 5.0L organic glass reactor and exhaust supernatant acquisition in swept volume
Substrate of the excess sludge (pH=6.8) as anaerobic fermentation production VFAs, does not add any substance, and reactor nitrogen charging is driven oxygen
10min, it is using mechanical stirring that reaction system material mixing is uniform.The only microbial action contained by sludge itself, will
The organic matter contained in sludge is converted into VFAs.Wherein reaction temperature is 35 ± 1 DEG C, and fermentation number of days is 8d, the VFAs's of production
Maximum level is 595.3mg/L (with chemical oxygen demand meter), and the concentration of phosphate radical is 20.6mg/L.
Above-described embodiment and comparative example fermentation condition and result data statistics are shown in Table 1.
Influence of 1 calcium hypochlorite of table to sludge anaerobic fermenting and producing VFAs
Claims (6)
1. a kind of method for promoting sludge anaerobic fermenting and producing volatile fatty acid, which comprises the following steps:
(1) the secondary settling tank sludge of sewage treatment plant is collected, standing sedimentation removes supernatant, obtains mud sample；
(2) mud sample that step (1) processing obtains is placed in reactor, adds calcium hypochlorite, reactor nitrogen charging is driven into oxygen
After seal, stirring keep reaction system material mixing uniform, fermenting and producing volatile fatty acid.
2. a kind of method for promoting sludge anaerobic fermenting and producing volatile fatty acid according to claim 1, feature exist
In in step (1), the standing sedimentation refers to naturally quiet under the conditions of 4 DEG C sink for 24 hours.
3. a kind of method for promoting sludge anaerobic fermenting and producing volatile fatty acid according to claim 1, feature exist
In in step (2), the dosage of the calcium hypochlorite and the weight ratio of mud sample are 0.005~0.1:1.
4. a kind of method for promoting sludge anaerobic fermenting and producing volatile fatty acid according to claim 1, feature exist
In in step (2), the dosage of the calcium hypochlorite and the weight ratio of mud sample are 0.01~0.05:1.
5. a kind of method for promoting sludge anaerobic fermenting and producing volatile fatty acid according to claim 1, feature exist
In in step (2), being stirred with 120~150rpm/min of revolving speed keeps reaction system material mixing uniform.
6. a kind of method for promoting sludge anaerobic fermenting and producing volatile fatty acid according to claim 1, feature exist
In in step (2), 25 DEG C -35 DEG C of fermentation temperature, the time is 4~12d.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110862207A (en) * | 2019-11-28 | 2020-03-06 | 湖南大学 | Method for promoting degradation of capsaicin in kitchen waste and simultaneously producing methane |
| CN112279478A (en) * | 2020-10-23 | 2021-01-29 | 国河环境研究院(南京)有限公司 | Method for recovering phosphorus in excess sludge in form of vivianite |
| CN114180799A (en) * | 2021-11-16 | 2022-03-15 | 同济大学 | Method for improving anaerobic digestion performance of excess sludge by using calcium hypochlorite |
| CN114394725A (en) * | 2022-01-17 | 2022-04-26 | 同济大学 | Method for improving anaerobic digestion of sludge to produce methane by combination of freezing and calcium hypochlorite |
| CN114394724A (en) * | 2022-01-17 | 2022-04-26 | 同济大学 | Method for improving sludge anaerobic fermentation hydrogen yield by using calcium hypochlorite |
| CN115321772A (en) * | 2022-07-25 | 2022-11-11 | 湖南平安环保股份有限公司 | Method for improving short-chain fatty acid produced by sludge through sodium dichloroisocyanurate combined ultrasonic pretreatment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004195425A (en) * | 2002-12-20 | 2004-07-15 | Daio Paper Corp | Removing method of malodorous substance in paper/pulp mill |
| CN1587097A (en) * | 2004-08-09 | 2005-03-02 | 杨毅男 | Multifunction strong waste water and sapropel purifier |
| CN1594126A (en) * | 2004-07-14 | 2005-03-16 | 杨毅男 | Multifunctional high efficient purifying agent for sewage and cumulose soil |
| CN108265087A (en) * | 2018-01-30 | 2018-07-10 | 河海大学 | A kind of method for promoting sludge anaerobic fermenting and producing volatile fatty acid |
| CN108866115A (en) * | 2018-07-11 | 2018-11-23 | 河海大学 | The method for efficiently producing volatile fatty acid using vinasse and sludge anaerobic fermentation |
-
2019
- 2019-08-20 CN CN201910771455.6A patent/CN110468164A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004195425A (en) * | 2002-12-20 | 2004-07-15 | Daio Paper Corp | Removing method of malodorous substance in paper/pulp mill |
| CN1594126A (en) * | 2004-07-14 | 2005-03-16 | 杨毅男 | Multifunctional high efficient purifying agent for sewage and cumulose soil |
| CN1587097A (en) * | 2004-08-09 | 2005-03-02 | 杨毅男 | Multifunction strong waste water and sapropel purifier |
| CN108265087A (en) * | 2018-01-30 | 2018-07-10 | 河海大学 | A kind of method for promoting sludge anaerobic fermenting and producing volatile fatty acid |
| CN108866115A (en) * | 2018-07-11 | 2018-11-23 | 河海大学 | The method for efficiently producing volatile fatty acid using vinasse and sludge anaerobic fermentation |
Non-Patent Citations (4)
| Title |
|---|
| JIALIN LIANG等: "A highly efficient conditioning process to improve sludge dewaterability by combining calcium hypochlorite oxidation, ferric coagulant re-flocculation, and walnut shell skeleton construction", 《CHEMICAL ENGINEERING JOURNAL》 * |
| TANG YUJIA等: "Freezing method assists calcium hypochlorite for synergistically promoting methane production from sludge anaerobic digestion", 《JOURNAL OF ENVIRONMENTAL MANAGEMENT》 * |
| XIAOFEI ZHU等: "Enhanced dewaterability of waste activated sludge with Fe(II)-activated hypochlorite treatment", 《ENVIRON SCI POLLUT RES INT》 * |
| 张淑媛等: "次氯酸钙/氧化钙对高砷污泥的氧化稳定化处理", 《环境工程学报》 * |
Cited By (7)
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|---|---|---|---|---|
| CN110862207A (en) * | 2019-11-28 | 2020-03-06 | 湖南大学 | Method for promoting degradation of capsaicin in kitchen waste and simultaneously producing methane |
| CN110862207B (en) * | 2019-11-28 | 2021-10-26 | 湖南大学 | Method for promoting degradation of capsaicin in kitchen waste and simultaneously producing methane |
| CN112279478A (en) * | 2020-10-23 | 2021-01-29 | 国河环境研究院(南京)有限公司 | Method for recovering phosphorus in excess sludge in form of vivianite |
| CN114180799A (en) * | 2021-11-16 | 2022-03-15 | 同济大学 | Method for improving anaerobic digestion performance of excess sludge by using calcium hypochlorite |
| CN114394725A (en) * | 2022-01-17 | 2022-04-26 | 同济大学 | Method for improving anaerobic digestion of sludge to produce methane by combination of freezing and calcium hypochlorite |
| CN114394724A (en) * | 2022-01-17 | 2022-04-26 | 同济大学 | Method for improving sludge anaerobic fermentation hydrogen yield by using calcium hypochlorite |
| CN115321772A (en) * | 2022-07-25 | 2022-11-11 | 湖南平安环保股份有限公司 | Method for improving short-chain fatty acid produced by sludge through sodium dichloroisocyanurate combined ultrasonic pretreatment |
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Application publication date: 20191119 |