CN108486167A - A kind of method of iron based products prepared and its improve anaerobic methane production - Google Patents
A kind of method of iron based products prepared and its improve anaerobic methane production Download PDFInfo
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- CN108486167A CN108486167A CN201810561070.2A CN201810561070A CN108486167A CN 108486167 A CN108486167 A CN 108486167A CN 201810561070 A CN201810561070 A CN 201810561070A CN 108486167 A CN108486167 A CN 108486167A
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- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The present invention relates to a kind of preparation of iron based products and its methods for improving anaerobic methane production, belong to debirs processing technology field.This method is as follows：(1) excess sludge of municipal sewage plant is handled using low frequency ultrasound wave producer；(2) using centrifuge, sludge is separated by solid-liquid separation to treated, extraction extracellular polymeric (EPS)；(3) by frerrous chloride (FeCl2) be slowly dissolve into EPS, it stirs and iron based products Fe EPS is made；(4) Fe EPS are added in the lower debirs anaerobic digestion reaction vessel of iron content background value, carry out long-term methane phase reaction under mesophilic condition；(5) collect and analyze the yield and methane content of biogas, the operation stability of assessing reactor.The present invention can effectively avoid iron precipitation, improve methane phase efficiency, while realize the recycling of excess sludge and debirs.
Description
Technical field
The present invention relates to debirs processing technology fields, a kind of preparation in particular to iron based products and its
The method for improving anaerobic methane production.
Background technology
With the continuous improvement of life and production level, the organic waste object amount of generation also increases therewith.Anaerobic digestion process
Debirs can be converted to the bioenergies such as biogas, be used widely.However, the iron content background value such as kitchen garbage, stalk
Lower organic matter anaerobic digestion process is often because microelement deficiencies cause reactor acidification, anaerobic methane production process to terminate.Add
Add iron that can effectively release volatile acid (VFAs) to inhibit, methane is promoted to generate.But the iron of addition easily in reactor it is cloudy from
Son, organic matter or inorganic matter reaction generate precipitation, not only cause the dosage of iron to increase, operating cost is improved, but also can be influenced
The recycling of biogas residue and biogas slurry.
Excess sludge is the Main By product of municipal sewage plant, and processing cost of disposal highest can account for sewage plant operation
The 50% of cost becomes the burden of sewage plant.Excess sludge contains a large amount of organic matter, especially its extracellular polymeric (EPS)
In carboxyl and the functional groups such as hydroxyl/amino proton binding sites can be provided for iron, chelatropic reaction occurs with iron.The chelating of iron
Object can not only prevent iron from forming precipitation with anionic reactive, additionally it is possible to be absorbed by the micro-organisms utilization, improve and participate in anaerobic digestion
The activity of various metals enzyme, and then the dosage of iron is reduced, improve the operation stability of methane production and reactor.
Invention content
The purpose of the present invention is to provide a kind of preparation methods of iron based products, utilize what is extracted from excess sludge
EPS makes itself and FeCl as chelating agent2Chelatropic reaction occurs and generates additive Fe-EPS, Fe is prevented to form precipitation, improve Fe quilts
The efficiency that anaerobe utilizes realizes the recycling of excess sludge.
Another object of the present invention is to provide a kind of methods improving anaerobic methane production, use above-mentioned additive Fe-
EPS can improve the activity of anaerobic digestion key metal enzyme, and the stability for improving methane production, maintaining anaerobic digestion process carries
The resource utilization of high debirs.
The present invention solves its technical problem using following technical scheme.
1. a kind of preparation of iron based products and its method for improving anaerobic methane production, which is characterized in that the step of this method
It is rapid as follows：
(1) excess sludge of municipal sewage plant is handled using low frequency ultrasound wave producer；
(2) using centrifuge, sludge is separated by solid-liquid separation to treated, extraction extracellular polymeric (EPS)；
(3) by frerrous chloride (FeCl2) be slowly dissolve into EPS, it stirs and iron based products Fe-EPS is made；
(4) Fe-EPS is added in the lower debirs anaerobic digestion reaction vessel of iron content background value, in medium temperature condition
It is lower to carry out long-term anaerobic digestion reaction；
(5) collect and analyze the yield and methane content of biogas, the operation stability of assessing reactor.
Further, in preferred embodiments of the present invention, above-mentioned excess sludge is derived from the secondary settling tank of sewage treatment plant,
After 1mm screen filtrations, is stood under the conditions of 4 DEG C for 24 hours, the sediment fraction after supernatant is discharged.
Further, in preferred embodiments of the present invention, the frequency of above-mentioned low frequency ultrasound wave producer be 20kHz,
Acoustic density is 1.0W/mL, ultrasonic time 5min.
Further, in preferred embodiments of the present invention, it is above-mentioned it is sonicated after excess sludge using centrifugation
Machine is separated by solid-liquid separation, and centrifugation frequency is 8000rpm, centrifugation time 10min.
Further, in preferred embodiments of the present invention, above-mentioned additive Fe-EPS is by the FeCl of 400mg2Gu
The EPS solution that body is added slowly to 1L is made.
Further, in preferred embodiments of the present invention, the dosage of above-mentioned additive Fe-EPS is 50-150mg/
GVS (in terms of Fe).
Further, in preferred embodiments of the present invention, the above-mentioned lower debirs of iron content background value are kitchen
Rubbish.
Further, in preferred embodiments of the present invention, kitchen garbage is smashed to pieces by flushing, sorting and heating successively
Deng pretreatment, treated, and grain size is ＜ 2mm.
Further, in preferred embodiments of the present invention, the dosing rate of the kitchen garbage is 6%-8%.
Further, in preferred embodiments of the present invention, above-mentioned anaerobic digestion reaction vessel uses indirect heating water bath
Device is heated, and temperature is controlled at 35 ± 1 DEG C.
Further, in preferred embodiments of the present invention, above-mentioned anaerobic digestion reaction vessel using electric mixer into
Row is stirred, and mixing speed is controlled in 100 ± 10rpm.
Further, in preferred embodiments of the present invention, gas that above-mentioned anaerobism generates using draining water gathering of gas law into
Row is collected.
The preparation of iron based products provided in an embodiment of the present invention and its method for improving anaerobic methane production have following effect
Fruit：The EPS that excess sludge is extracted using low frequency ultrasound wave producer, makes itself and FeCl2Reaction prepares Fe-EPS additives, and will
It is added to progress methane phase reaction in anaerobic digestion of kitchen wastes reactor, not only substantially increases biogas yield and methane
Content, and can effectively maintain the operation stability of reactor.Therefore, the preparation of iron based products provided in an embodiment of the present invention
And its method for improving anaerobic methane production, the generation of methane can be promoted, the additive amount and operating cost of iron is reduced, realize simultaneously
The recycling of excess sludge and kitchen garbage, therefore it is with important application value.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to the attached drawing used in embodiment
It is simple to introduce, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as to range
It limits, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other relevant attached drawings.
Fig. 1 is the method flow signal that iron based products provided in an embodiment of the present invention prepared and improved anaerobic methane production
Figure；
Fig. 2 is the structural schematic diagram of anaerobic digestion device provided in an embodiment of the present invention；
Fig. 3 is variation of the different additive to biogas yield during anaerobic digestion of kitchen wastes in the embodiment of the present invention
Curve graph；
Fig. 4 is that different additive is bent to the variation of VFAs concentration during anaerobic digestion of kitchen wastes in the embodiment of the present invention
Line chart；
Fig. 5 be the embodiment of the present invention in different additive to after anaerobic digestion of kitchen wastes biogas constituent it is opposite
Ratio bar graphs.
Icon：1- anaerobic digestion reaction vessels；2- electric mixers；3- rotation speed regulating and controlling devices；4- water-sealed drainage bottles；5- graduated cylinders；6-
Water bath heating device；7- temperature control equipments；8- feed tanks；9- feed pumps；10- discharging pumps；11- material-output tanks.
Specific implementation mode
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, builds according to normal condition or manufacturer
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional products that commercially available purchase obtains.
The preparation process to the iron based products of the embodiment of the present invention and its method for improving anaerobic methane production carry out below
It illustrates.
The embodiment of the present invention provides a kind of method of iron based products prepared and its improve anaerobic methane production comprising with
Lower step：
(1) excess sludge of municipal sewage plant is handled using low frequency ultrasound wave producer；
(2) using centrifuge, sludge is separated by solid-liquid separation to treated, extraction extracellular polymeric (EPS)；
(3) by frerrous chloride (FeCl2) be slowly dissolve into EPS, it stirs and iron based products Fe-EPS is made；
(4) Fe-EPS is added in the lower debirs anaerobic digestion reaction vessel of iron content background value, in medium temperature condition
It is lower to carry out long-term anaerobic digestion reaction；
(5) collect and analyze the yield and methane content of biogas, the operation stability of assessing reactor.
Further, the excess sludge used in Fe-EPS is prepared in the embodiment of the present invention is derived from the two of municipal sewage plant
Heavy pond, after 1mm screen filtrations, the property that gained sludge after supernatant is discharged for 24 hours is stood under the conditions of 4 DEG C is as shown in table 1.
Further, in the embodiment of the present invention, the major parameter of the low frequency ultrasound wave producer of use is as follows：Ultrasonic wave frequency
Rate is 20kHz, ultrasonic density is 1.0W/mL, ultrasonic time 5min.
Further, in the embodiment of the present invention, the excess sludge after supersound process is separated by solid-liquid separation using centrifuge, from
Frequency of heart is 8000rpm, and centrifugation time 10min, supernatant is EPS solution.
Further, in the embodiment of the present invention, by the FeCl of 400mg2Solid is added slowly to the EPS solution of 1L, stirring
Additive Fe-EPS is made.
Further, during anaerobic methane production provided in an embodiment of the present invention, kitchen garbage is rinsed, sorts successively
The pre-treatment step smashed to pieces with heating.Specifically the kitchen garbage to collection is rinsed with tap water, to reduce wherein institute
Then the oil and salinity contained chooses the sundries such as bone, paper handkerchief, finally, kitchen garbage heating is smashed to pieces to grain size ＜ 2mm.Through
The property of pretreated kitchen garbage is as shown in table 1.
Further, seed sludge provided in this embodiment is derived from the upward flow anaerobic reactor (UASB) of certain brewery,
Its property is with as shown in table 1.
The property of 1 excess sludge of table, kitchen garbage and seed sludge
Further, in embodiments of the present invention, in the starting stage of anaerobic digestion device operation, 10- is led into device
The nitrogen of 15min makes reaction system be in anaerobic state, is conducive to the growth of anaerobic methanogens.
Further, in the embodiment of the present invention, anaerobic digestion reaction vessel is heated using indirect water-bath, and is added
Hot temperature is 35 ± 1 DEG C, and reaction system is made to be in the optimal temperature conditions of mesophilic digestion.
Further, in order to ensure that various substances are sufficiently mixed during anaerobic methane production, the present invention uses electric stirring
Device 2 is stirred mixing, and rotating speed is controlled in 100 ± 10rpm.
Every advantage based on above-mentioned Fe-EPS, in order to give full play to effects of the Fe-EPS in anaerobic digestion process, this
Inventive embodiments preferably limit the dosage of Fe-EPS as 50-150mg/gVS.
Further, in the embodiment of the present invention, during anaerobic methane production, dosing rate 6%-8%.
Please refer to Fig. 2, anaerobic digestion device used by the embodiment of the present invention comprising anaerobic digestion reaction vessel 1 is used for
The electric mixer 2 and rotation speed regulating and controlling devices 3 that be stirred to anaerobic digestion reaction vessel 1, draining gas collecting apparatus (4 He of water-sealed drainage bottle
Graduated cylinder 5), carry out the water bath heating device 6 of heating water bath to anaerobic digestion reaction vessel 1 and corresponding temperature control equipment 7, be used for
The feed tank 8 and feed pump 9 of charging and pump 10 and material-output tank 11 for discharging.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of preparation of iron based products and its methods for improving anaerobic methane production, are above-mentioned
Implement in anaerobic digestion device, specifically includes following steps：
After the kitchen garbage of collection is rinsed kitchen garbage with tap water, manually choose the bone in kitchen garbage
The sundries such as head, plastic products, paper handkerchief, then kitchen garbage heating is smashed to pieces to ＜ 2mm.
By the secondary settling tank sludge of the municipal sewage plant of collection, after 1mm screen filtrations, stood under the conditions of 4 DEG C
For 24 hours, after supernatant being discharged, sludge is ultrasonically treated (1.0W/mL, 5min) using the low frequency ultrasound wave producer of 20kHz.
Excess sludge after supersound process obtains EPS solution using centrifuge (8000rpm) centrifugation 10min.Again by the FeCl of 400mg2
Solid is added slowly to the EPS solution of 1L, stirs and additive Fe-EPS is made.
The anaerobic digestion device that 4 sets of total measurement (volume)s are 10L is arranged in the present embodiment altogether, in the reaction starting stage, respectively to every set
After being packed into the kitchen garbage of 4.5L and the seed sludge of 1.5L in anaerobic digestion device, 15min nitrogen is led into anaerobic digestion device
Air is discharged in gas.
The substance in anaerobic digestion reaction vessel 1 is stirred with electric mixer 2, will be turned by rotation speed regulating and controlling device 3
Speed control is 100rpm, and is controlled the temperature of anaerobic digestion reaction vessel 1 at 35 DEG C by water bath heating device 6, at the same time,
The biogas generated in anaerobic digestion reaction vessel 1 is collected using draining gas collecting apparatus (water-sealed drainage bottle 4 and graduated cylinder 5).In addition,
It is emphasized that the present embodiment, in carrying out anaerobic digestion reaction process, kitchen garbage dosing rate is 6%.
The switch of feed pump 9 and discharging pump 10 is controlled using autotimer to control input and output material, daily in the same of charging
When, the Fe-EPS added into the 4th set of anaerobic digestion device is 100mg/gVS (in terms of Fe), to the 2nd and the 3rd set of anaerobic digestion
The FeCl with the 4th set of equivalent is separately added into device2And EPS, the 1st set (is not added with any additive) as a control group.
Embodiment 2
The present embodiment provides a kind of preparation of iron based products and its methods for improving anaerobic methane production, are above-mentioned
Implement in anaerobic digestion device, specifically includes following steps：
After the kitchen garbage of collection is rinsed kitchen garbage with tap water, manually choose the bone in kitchen garbage
The sundries such as head, plastic products, paper handkerchief, then kitchen garbage heating is smashed to pieces to ＜ 2mm.
By the secondary settling tank sludge of the municipal sewage plant of collection, after 1mm screen filtrations, stood under the conditions of 4 DEG C
For 24 hours, after supernatant being discharged, sludge is ultrasonically treated (1.0W/mL, 5min) using the low frequency ultrasound wave producer of 20kHz.
Excess sludge after supersound process obtains EPS solution using centrifuge (8000rpm) centrifugation 10min.Again by the FeCl of 400mg2
Solid is added slowly to the EPS solution of 1L, stirs and additive Fe-EPS is made.
The anaerobic digestion device that 4 sets of total measurement (volume)s are 10L is arranged in the present embodiment altogether, in the reaction starting stage, respectively to every set
After being packed into the kitchen garbage of 4.5L and the seed sludge of 1.5L in anaerobic digestion device, 10min nitrogen is led into anaerobic digestion device
Air is discharged in gas.
The substance in anaerobic digestion reaction vessel 1 is stirred with electric mixer 2, will be turned by rotation speed regulating and controlling device 3
Speed control is 110rpm, and is controlled the temperature of anaerobic digestion reaction vessel 1 at 35 DEG C by water bath heating device 6, at the same time,
The biogas generated in anaerobic digestion reaction vessel 1 is collected using draining gas collecting apparatus (water-sealed drainage bottle 4 and graduated cylinder 5).In addition,
It is emphasized that the present embodiment, in carrying out anaerobic digestion reaction process, kitchen garbage dosing rate is 8%.
The switch of feed pump 9 and discharging pump 10 is controlled using autotimer to control input and output material, daily in the same of charging
When, the Fe-EPS added into the 4th set of anaerobic digestion device is 150mg/gVS (in terms of Fe), to the 2nd and the 3rd set of anaerobic digestion
The FeCl with the 4th set of equivalent is separately added into device2And EPS, the 1st set (is not added with any additive) as a control group.
Embodiment 3
The present embodiment provides a kind of preparation of iron based products and its methods for improving anaerobic methane production, are above-mentioned
Implement in anaerobic digestion device, specifically includes following steps：
After the kitchen garbage of collection is rinsed kitchen garbage with tap water, manually choose the bone in kitchen garbage
The sundries such as head, plastic products, paper handkerchief, then kitchen garbage heating is smashed to pieces to ＜ 2mm.
By the secondary settling tank sludge of the municipal sewage plant of collection, after 1mm screen filtrations, stood under the conditions of 4 DEG C
For 24 hours, after supernatant being discharged, sludge is ultrasonically treated (1.0W/mL, 5min) using the low frequency ultrasound wave producer of 20kHz.
Excess sludge after supersound process obtains EPS solution using centrifuge (8000rpm) centrifugation 10min.Again by the FeCl of 400mg2
Solid is added slowly to the EPS solution of 1L, stirs and additive Fe-EPS is made.
The anaerobic digestion device that 4 sets of total measurement (volume)s are 10L is arranged in the present embodiment altogether, in the reaction starting stage, respectively to every set
After being packed into the kitchen garbage of 4.5L and the seed sludge of 1.5L in anaerobic digestion device, 10min nitrogen is led into anaerobic digestion device
Air is discharged in gas.
The substance in anaerobic digestion reaction vessel 1 is stirred with electric mixer 2, will be turned by rotation speed regulating and controlling device 3
Speed control is 100rpm, and is controlled the temperature of anaerobic digestion reaction vessel 1 at 35 DEG C by water bath heating device 6, at the same time,
The biogas generated in anaerobic digestion reaction vessel 1 is collected using draining gas collecting apparatus (water-sealed drainage bottle 4 and graduated cylinder 5).In addition,
It is emphasized that the present embodiment, in carrying out anaerobic digestion reaction process, kitchen garbage dosing rate is 6%.
The switch of feed pump 9 and discharging pump 10 is controlled using autotimer to control input and output material, daily in the same of charging
When, the Fe-EPS added into the 4th set of anaerobic digestion device is 50mg/gVS (in terms of Fe), is filled to the 2nd and the 3rd set of anaerobic digestion
The FeCl with the 4th set of equivalent is separately added into setting2And EPS, the 1st set (is not added with any additive) as a control group.
Test example
Test example is that experiment sample carries out analysis of experiments with embodiment 1, and result please respectively refer to Fig. 3-5.
When can be seen that operation 150d with reference to Fig. 3, adding the average organism gas yield in Fe-EPS embodiments is
0.57m3/ (kgd), than only adding FeCl2Biogas yield in embodiment improves 15%, adds Fe-EPS embodiments
Reactor operation more stablize, the fluctuation range of biogas is 0.57 ± 0.15m3/(kg·d).Check experiment and only addition
Biogas in EPS embodiments occurs being decreased obviously trend since 90d.
From fig. 4, it can be seen that the VFAs in check experiment and addition EPS embodiments is accumulated, and add FeCl2With
VFAs concentration in Fe-EPS embodiments maintains to stablize relatively, and the VFAs concentration especially added in Fe-EPS embodiments is minimum,
About add FeCl21/3 in embodiment, this illustrates that Fe-EPS effectively can inhibit anaerobic digestion reaction vessel to be acidified.
From fig. 5, it can be seen that in biogas ingredient, Fe-EPS and FeCl is added2The methane of embodiment and containing for hydrogen
Amount is substantially higher the experiment in check experiment and only adding EPS.And by calculating, in the same circumstances, add Fe-EPS's
Methane content reaches 61.1%, hydrogen content 32.3% in embodiment.Therefore, it can be proved that being provided in the embodiment of the present invention 1
Fe-EPS prepare and its improve kitchen garbage anaerobic methane production method, considerably improve biogas yield and methane it is pure
Degree, achieves apparent advantageous effect.
In conclusion provided in an embodiment of the present invention, using low frequency ultrasound wave producer, that EPS is extracted from excess sludge is molten
Liquid is as chelating agent, with FeCl2Fe-EPS additives are prepared in reaction.In addition, Fe-EPS is added to kitchen garbage anaerobism
Methane phase is carried out in digestion reactor so that anaerobic organism gas yield increases substantially, and corresponding methane content is also increased.
Therefore, the preparation of iron based products provided in an embodiment of the present invention and its method for improving anaerobic methane production, are effectively improved
The relative amount of biogas yield and methane, while the recycling of kitchen garbage and excess sludge is realized, therefore it has
Important application value.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of the selected implementation of the present invention
Example.
Claims (8)
1. a kind of preparation of iron based products and its method for improving anaerobic methane production, which is characterized in that the step of this method such as
Under：
(1) excess sludge of municipal sewage plant is handled using low frequency ultrasound wave producer；
(2) using centrifuge, sludge is separated by solid-liquid separation to treated, extraction extracellular polymeric (EPS)；
(3) by frerrous chloride (FeCl2) be slowly dissolve into EPS, it stirs and iron based products Fe-EPS is made；
(4) Fe-EPS is added in the lower debirs anaerobic digestion reaction vessel of iron content background value, under mesophilic condition into
The long-term anaerobic digestion reaction of row；
(5) collect and analyze the yield and methane content of biogas, the operation stability of assessing reactor.
2. a kind of preparation of iron based products according to claim 1 and its method for improving anaerobic methane production, feature
It is, the frequency of the low frequency ultrasound wave producer is 20kHz, handles acoustic density and ultrasonic time used in excess sludge
Respectively 1.0W/mL and 5min.
3. a kind of preparation of iron based products according to claim 1 and its method for improving anaerobic methane production, feature
It is, the centrifugation frequency used in the extraction EPS is 8000rpm, centrifugation time 10min.
4. a kind of preparation of iron based products according to claim 1 and its method for improving anaerobic methane production, feature
It is, FeCl2The proportionate relationship of solid and EPS solution is 400mg: 1L.
5. a kind of preparation of iron based products according to claim 1 and its method for improving anaerobic methane production, feature
It is, the dosage ranging from 50-150mg/gVS of the Fe-EPS (in terms of Fe).
6. a kind of preparation of iron based products according to claim 1 and its method for improving anaerobic methane production, feature
It is, the dosing rate of debirs is 6%-8% when the anaerobic digestion.
7. a kind of preparation of iron based products according to claim 1 and its method for improving anaerobic methane production, feature
It is, the anaerobic digestion reaction vessel uses indirect heating water bath, and temperature control is at 35 ± 1 DEG C.
8. a kind of preparation of iron based products according to claim 1 and its method for improving anaerobic methane production, feature
Be, the anaerobic digestion reaction vessel is stirred mixing using electric mixer, and mixing speed control 100 ±
10rpm。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689666A (en) * | 2020-06-19 | 2020-09-22 | 陕西科技大学 | Method for improving methane production by anaerobic fermentation of excess sludge |
| CN113929195A (en) * | 2021-11-05 | 2022-01-14 | 哈尔滨工业大学 | Preparation method of sludge extracellular polymer composite nano zero-valent iron |
| CN114195272A (en) * | 2021-12-23 | 2022-03-18 | 华北电力科学研究院有限责任公司 | Desulfurization wastewater treatment method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5783081A (en) * | 1991-05-24 | 1998-07-21 | Gaddy; James L. | Performance of anaerobic digesters |
| CN107858380A (en) * | 2017-11-21 | 2018-03-30 | 南京林业大学 | A kind of devices and methods therefor for improving kitchen garbage anaerobic methane production |
-
2018
- 2018-05-29 CN CN201810561070.2A patent/CN108486167A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5783081A (en) * | 1991-05-24 | 1998-07-21 | Gaddy; James L. | Performance of anaerobic digesters |
| CN107858380A (en) * | 2017-11-21 | 2018-03-30 | 南京林业大学 | A kind of devices and methods therefor for improving kitchen garbage anaerobic methane production |
Non-Patent Citations (2)
| Title |
|---|
| PHAM MINH THANH，ET AL.: "Trace metal speciation and bioavailability in anaerobic digestion: A review", 《BIOTECHNOLOGY ADVANCES》 * |
| 龙腾锐等: "超声波提取活性污泥胞外聚合物的研究", 《环境化学》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689666A (en) * | 2020-06-19 | 2020-09-22 | 陕西科技大学 | Method for improving methane production by anaerobic fermentation of excess sludge |
| CN113929195A (en) * | 2021-11-05 | 2022-01-14 | 哈尔滨工业大学 | Preparation method of sludge extracellular polymer composite nano zero-valent iron |
| CN113929195B (en) * | 2021-11-05 | 2023-09-12 | 哈尔滨工业大学 | Preparation method of sludge extracellular polymer composite nano zero-valent iron |
| CN114195272A (en) * | 2021-12-23 | 2022-03-18 | 华北电力科学研究院有限责任公司 | Desulfurization wastewater treatment method |
| CN114195272B (en) * | 2021-12-23 | 2024-02-27 | 华北电力科学研究院有限责任公司 | Desulfurization wastewater treatment method |
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