CN210505993U - Experimental device for cracking sludge through dielectric barrier discharge - Google Patents
Experimental device for cracking sludge through dielectric barrier discharge Download PDFInfo
- Publication number
- CN210505993U CN210505993U CN201921494577.7U CN201921494577U CN210505993U CN 210505993 U CN210505993 U CN 210505993U CN 201921494577 U CN201921494577 U CN 201921494577U CN 210505993 U CN210505993 U CN 210505993U
- Authority
- CN
- China
- Prior art keywords
- sludge
- voltage electrode
- discharge
- plasma generator
- quartz glass
- 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.)
- Expired - Fee Related
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 96
- 230000004888 barrier function Effects 0.000 title claims abstract description 20
- 238000005336 cracking Methods 0.000 title claims description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 32
- 229910052802 copper Inorganic materials 0.000 claims description 32
- 239000010949 copper Substances 0.000 claims description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 28
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 claims description 10
- 230000015556 catabolic process Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 23
- 230000008569 process Effects 0.000 abstract description 17
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000813 microbial effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 238000002156 mixing Methods 0.000 description 8
- 239000010865 sewage Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 230000029087 digestion Effects 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- 150000004676 glycans Chemical class 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 229920001282 polysaccharide Polymers 0.000 description 3
- 239000005017 polysaccharide Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010977 jade Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000013048 microbiological method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000009283 thermal hydrolysis Methods 0.000 description 1
Images
Landscapes
- Plasma Technology (AREA)
Abstract
The utility model discloses a mud experimental apparatus is explaided in dielectric barrier discharge belongs to sludge treatment technical field. The utility model discloses a mud experimental apparatus is explaided in dielectric barrier discharge, including plasma generator, transformer, oscilloscope and discharge reaction container, the input of plasma generator is connected with the transformer, the oscilloscope with plasma generator's output is connected; by Ca (OH)2Combined with application research of DBD plasma discharge to improve sludge biodegradability, strong current, high energy density, strong ultraviolet radiation and strong shock wave generated in DBD discharge process are used for breaking sludgeThe microbial cells, ozone generated during the discharge process, OH and alkali act in combination to enhance the effect of sludge pretreatment.
Description
Technical Field
The utility model belongs to the technical field of sludge treatment, concretely relates to dielectric barrier discharges and explains mud experimental apparatus.
Background
In recent years, along with the continuous progress of national environmental protection consciousness, people pay more attention to the harmlessness, reduction and resource treatment of excess sludge in municipal sewage plants. Anaerobic digestion is an ideal treatment technology for resourceful treatment of excess sludge in sewage plants because it has good treatment capacity and can generate fuel such as methane during the treatment process.
However, the disposal of the anaerobic sludge digestion technology in actual production is limited to a certain extent. The reason is that the hydrolysis stage in the anaerobic digestion three stages takes longer time, so that the shortening of the anaerobic digestion time of the sludge is significant and the acceleration of the process of the stage is significant. This can be achieved by breaking the cell walls (membranes) of the microorganisms. The main cell wall breaking ideas at present are physical/mechanical, chemical, biological pretreatment and combined pretreatment methods.
Among physical/mechanical methods, hydrothermal method is one of the more common methods, such as Jose (Abelleira-Pereira J.M., Perez-Elvira S.I.Sanchez-Onej., et al.enhancement of methane production in a microbial and biological diagnostic of a second sewage slurry along with thermal hydrolysis [ J ] Water research,2015,71:330-40.) through experiments, the methane yield of sludge hydrothermally pretreated at 170 ℃ for half an hour is 60% higher than that of sludge without hydrothermal pretreatment. However, because a large amount of heat needs to be input in the heating process, the energy consumption is high, and therefore, the application in practical engineering has certain limitations.
The chemical pretreatment process needs to add chemical agents, so the actual effect is limited, and the actual engineering application is still difficult. Experiments of Shipu jade (Yupu jade, grand force, thank exism, Zhenghui, Qiubun. ozone pretreatment on the influence of residual sludge characteristics and anaerobic digestion [ J ]. environmental engineering reports, 2017,11(06):3740 and 3746.) show that after the residual sludge is treated by ozone for 10 minutes, the methane yield reaches 318.29ml, and is improved by about 4 times compared with the methane yield of the sludge without pretreatment. However, the dissolution rate of ozone in water is low, the problem of difficult aeration exists, and the input ozone amount is far larger than the actual dissolution, so the use of ozone in sludge pretreatment is limited.
The biological pretreatment method still has more uncontrollable factors in the actual application process. Zhaoweina (Zhaoweina. behavior research of promoting excess sludge decrement by a thermophilic enzyme dissolving method [ D ].2008.) and the like utilize thermophilic bacteria to pretreat sludge, and under the condition that the culture temperature is 65 ℃, the TSS and VSS dissolving rates of the sludge can reach 32 percent and 48 percent, and are improved by 12 percent and 20 percent compared with those of the sludge which is not inoculated. However, the condition for the microorganism to become the dominant strain in the sludge is still required. With this limitation, the use of microbiological methods in sludge pretreatment is limited.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide the experimental device for breaking the sludge by dielectric barrier discharge.
The invention adopts the following technical scheme:
the utility model provides a dielectric barrier discharge sludge cracking experimental device, which comprises a plasma generator, a transformer, an oscilloscope and a discharge reaction container, wherein the input end of the plasma generator is connected with the transformer, and the oscilloscope is connected with the output end of the plasma generator;
the discharge reaction vessel includes:
a threaded copper rod;
the high-voltage electrode is connected with one end of the threaded copper rod, and the other end of the threaded copper rod is connected with a power output end of the plasma generator through a lead;
a quartz glass container, the high voltage electrode being in close contact with the bottom of the quartz glass container to obtain uniform discharge;
the low-voltage electrode is arranged opposite to and parallel to the high-voltage electrode;
the low-voltage electrode is arranged at the bottom of the sludge reaction tank and is in close contact with the bottom of the sludge reaction tank;
the low-voltage electrode is connected with the power output end of the plasma generator through a lead and is grounded;
and insulating plates are covered outside the quartz glass container and the sludge reaction tank, and the threaded copper rod vertically penetrates through the insulating plates.
In some embodiments, the panel under the ya keli has been placed to the bottom of discharge reaction vessel, be equipped with several ya keli posts on the ya keli panel, the ya keli top panel is connected to the other end of ya keli post, just the screw thread bar copper passes the ya keli top panel.
In some embodiments, the power supply of the plasma generator adopts a TDGC 2-1 type single-phase contact self-coupling voltage regulator, and the oscilloscope is a GDS-820C oscilloscope. The regulator regulates the voltage of 220V for civil use to the voltage required by the experiment and inputs the voltage into the plasma generator, and the voltage regulator can regulate the voltage. The plasma generator has a current regulation function, can regulate current flow in the process of generating plasma, monitors voltage, current and discharge frequency in the discharge process in real time by means of a GDS-820C oscilloscope, and regulates the voltage and the current by means of a transformer and the plasma generator;
in some embodiments, the high-voltage electrode is a rectangular copper plate, and is 9cm long, 8cm wide and 0.15cm thick; the length of the threaded copper rod is 30 cm; the thickness of the quartz glass container is 0.2cm, and the size of the high-voltage electrode 8 is smaller than the bottom area of the quartz glass container; the quartz glass container is filled with copper sulfate pentahydrate solution, so that the uniform discharge in the discharge process is ensured, and the high-voltage electrode is prevented from being overheated in the discharge process due to the evaporation of the copper sulfate pentahydrate solution.
In some embodiments, the sludge reaction tank is an acrylic reaction tank, and has a size consistent with that of the quartz glass container, and the low-voltage electrode is a rectangular copper plate, and has a size consistent with that of the high-voltage electrode.
The invention also provides application of the experimental device for breaking sludge by dielectric barrier discharge in sludge pretreatment, which comprises the following steps:
step one, taking sludge to be treated for later use;
step two, mixing the sludge to be treated with Ca (OH)2Uniformly mixing, and carrying out alkaline substance pretreatment;
and step three, placing the sludge pretreated by the alkaline substances in a sludge reaction tank 10 of a dielectric barrier discharge sludge cracking experimental device, and performing discharge plasma pretreatment, wherein the discharge voltage is 10-12 Kv, the discharge frequency is 11-12 KHz, and the discharge time is 10-24 min.
In some embodiments, the Ca (OH) in step two2The adding concentration of the sludge to be treated is 0.02 mol/L-0.05 mol/L, Ca (OH)2The adding time is 10 min-60 min.
In some embodiments, the discharge voltage in step three is 10.62Kv, the discharge frequency is 12KHz, and the discharge time is 23.8 min.
In some embodiments, the Ca (OH) in step two2The adding concentration of the sludge to be treated is 0.03mol/L, Ca (OH)2The adding time of (2) is 60 min.
In some examples, 100ml of 1mol/L copper sulfate pentahydrate solution is added during the discharge plasma pretreatment in step three.
Compared with the prior art, the invention has the beneficial effects that:
the invention is realized by Ca (OH)2Combined with application research of DBD plasma discharge to improve sludge biodegradability, microbial cells in sludge are broken by means of strong current, high energy density, strong ultraviolet radiation and strong shock waves generated in the DBD discharge process, and microbial cells in sludge are broken in the discharge processThe combined action of ozone, OH and alkali produced in the process enhances the effect of sludge pretreatment.
The concentration of SCOD (soluble activated sludge) of the pretreated sludge is 1993.4mol/L, the concentration of protein is 331.1mol/L, the concentration of polysaccharide is 225.8mol/L, the concentration of ammonia nitrogen is 145.2mol/L, and the pH value is 7.999.
After the sludge pretreated by the method is subjected to anaerobic fermentation, the methane yield can reach 361 ml.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic diagram of an experimental device for breaking sludge by dielectric barrier discharge according to the present invention;
in the figure: 1. a plasma generator; 2. a transformer; 3. an oscilloscope; 4. a low voltage electrode; 5. a threaded copper rod; 6. a quartz glass container; 7. copper sulfate pentahydrate solution; 8. a high voltage electrode; 9. sludge sample liquid; 10. a sludge reaction tank; 11. an insulating plate; 12. an acrylic column; 13. an acrylic upper panel; 14. a wire; 15. inferior panel of inferior gram force.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
The invention provides a dielectric barrier discharge sludge cracking experimental device which comprises a plasma generator 1, a transformer 2, an oscilloscope 3 and a discharge reaction container, wherein the input end of the plasma generator 1 is connected with the transformer 2, and the oscilloscope 3 is connected with the output end of the plasma generator 1;
the discharge reaction vessel includes:
a threaded copper rod 5;
the high-voltage electrode 8 is connected with one end of the threaded copper rod 5, and the other end of the threaded copper rod 5 is connected with a power supply output end of the plasma generator 1 through a lead;
a quartz glass container 6, the high voltage electrode 8 is closely contacted with the bottom of the quartz glass container 6 to obtain uniform discharge;
the low-voltage electrode 4 is arranged opposite to and parallel to the high-voltage electrode 8;
the low-voltage electrode 4 is arranged at the bottom of the sludge reaction tank 10 and is in close contact with the bottom of the sludge reaction tank 10;
the low-voltage electrode 4 is connected with the power output end of the plasma generator 1 through a lead and is grounded;
the quartz glass container 6 and the sludge reaction tank 10 are covered with an insulating plate 11, and the threaded copper rod 5 vertically penetrates through the insulating plate 11.
In one embodiment, the panel 15 under the ya keli has been placed to the bottom of discharge reaction vessel, be equipped with several ya keli posts 12 under the ya keli on the panel 15, ya keli upper panel 13 is connected to the other end of ya keli post 12, just screw thread bar copper 5 passes yakeli upper panel 13.
In one embodiment, the power supply of the plasma generator 1 adopts a TDGC 2-1 type single-phase contact self-coupling voltage regulator, and the oscilloscope 3 is a GDS-820C oscilloscope. The regulator regulates the voltage of 220V for civil use to the voltage required by the experiment and inputs the voltage into the plasma generator, and the voltage regulator can regulate the voltage. The plasma generator has a current regulation function, can regulate current flow in the process of generating plasma, monitors voltage, current and discharge frequency in the discharge process in real time by means of a GDS-820C oscilloscope, and regulates the voltage and the current by means of a transformer and the plasma generator;
in one embodiment, the high voltage electrode 8 is a rectangular copper plate, and has a length of 9cm, a width of 8cm and a thickness of 0.15 cm; the length of the threaded copper rod is 5 cm; the thickness of the quartz glass container 6 is 0.2cm, and the size of the high-voltage electrode 8 is smaller than the bottom area of the quartz glass container 6.
In one embodiment, the quartz glass vessel 6 contains a copper sulfate pentahydrate solution 7 to ensure uniform discharge during discharge and to avoid overheating of the high voltage electrode during discharge due to evaporation of the copper sulfate pentahydrate solution.
In one embodiment, the sludge reaction tank 10 is an acrylic reaction tank and has a size consistent with that of the quartz glass container 6, and the low-voltage electrode 4 is a rectangular copper plate and has a size consistent with that of the high-voltage electrode 8.
The invention also provides application of the experimental device for breaking sludge by dielectric barrier discharge in sludge pretreatment, which comprises the following steps:
step one, taking sludge to be treated for later use;
step two, mixing the sludge to be treated with Ca (OH)2Mixing, pretreating with alkaline substance (Ca (OH))2The addition of the compound is beneficial to promoting the generation of DBD discharge plasma active substances such as OH and the like and promoting the disintegration of sludge microbial cells;
and step three, placing the sludge pretreated by the alkaline substances in a sludge reaction tank 10 of a dielectric barrier discharge sludge cracking experimental device, and performing discharge plasma pretreatment, wherein the discharge voltage is 10-12 Kv, the discharge frequency is 11-12 KHz, and the discharge time is 10-24 min.
In one embodiment, the Ca (OH) in step two2The adding concentration of the sludge to be treated is 0.02 mol/L-0.05 mol/L, Ca (OH)2The adding time is 10 min-60 min.
In one embodiment, the discharge voltage in step three is 10.62Kv, the discharge frequency is 12KHz, and the discharge time is 23.8 min.
In one embodiment, the Ca (OH) in step two2The adding concentration of the sludge to be treated is 0.03mol/L, Ca (OH)2The adding time of (2) is 60 min.
In one embodiment, when the discharge plasma pretreatment is performed in step three, 100ml of 1mol/L copper sulfate pentahydrate solution is added.
The source of the sludge to be treated is not particularly limited in the present invention, and sludge known to those skilled in the art may be used. For example, the method provided by the invention can be used for treating excess sludge and can also be used for treating sludge.
In the invention, the excess sludge is sludge generated by sewage treatment, comprises scum and microbial community and is a secondary product after sewage biochemical treatment in a sewage plant;
the sludge to be pretreated and Ca (OH) are treated2The order of addition at the time of mixing is not particularly limited, and may be any order of addition known to those skilled in the art. The invention preferably begins with the addition of Ca (OH) to the sludge to be pretreated2After stirring, a DBD discharge pretreatment is performed.
In order to further illustrate the present invention, the method for pretreating sludge provided by the present invention will be described in detail with reference to examples, but they should not be construed as limiting the scope of the present invention.
Examples
As shown in figure 1, 500ml of sludge to be pretreated is taken from a sludge discharge well of a secondary sedimentation tank of a sewage treatment plant, and 0.015mol of Ca (OH) is added2。
Mixing the two materials uniformly by a magnetic stirrer, stirring for 60min, and transferring to a DBD discharge device.
And adjusting various parameters of the DBD discharge device, wherein the discharge voltage is 10.62Kv, the discharge frequency is 12KHz, and the discharge time is 23.80 min.
The concentration of SCOD (soluble activated sludge) of the pretreated sludge is 1993.4mol/L, the concentration of protein is 331.1mol/L, the concentration of polysaccharide is 225.8mol/L, the concentration of ammonia nitrogen is 145.2mol/L, and the pH value is 7.999.
Transferring the sludge into a conical flask for medium-temperature anaerobic fermentation, and collecting methane gas by adopting a drainage method. And (5) performing anaerobic fermentation for 21 d. The methane production was determined to be 361 ml.
The sludge pretreatment method comprises the following steps: mixing the sludge to be pretreated with Ca (OH)2Uniformly mixing, and carrying out alkaline substance pretreatment. Ca (OH)2The adding concentration of (A) is 0.03 mol/L. Ca (OH)2The adding time of (2) is 60 min. And then, the DBD discharge plasma pretreatment is carried out by adopting the experimental device for breaking sludge by dielectric barrier discharge, wherein the DBD discharge condition is that the discharge voltage is 10.62Kv, the discharge frequency is 12KHz, and the discharge time is 23.82 min. Ca (OH)2The addition of the active substance is beneficial to promoting DBD discharge plasmaOH, etc., and promote the cell breakdown of sludge microorganisms. The experimental results show that the product of Ca (OH)2The SCOD of the sludge subjected to combined pretreatment with the DBD discharge plasma is 1993.4mol/L, the protein concentration is 331.1mol/L, the polysaccharide concentration is 225.8mol/L, the ammonia nitrogen concentration is 145.2mol/L, and the pH value is 7.999. The gas production under the combined treatment experimental conditions reaches a maximum of 386ml, while the original sludge is only 261ml under the normal conditions.
As shown in fig. 2, the experimental apparatus for cracking sludge by dielectric barrier discharge of the present invention comprises a plasma generator 1, a transformer 2, an oscilloscope 3 and a discharge reaction vessel, wherein an input end of the plasma generator 1 is connected with the transformer 2, the oscilloscope 3 is connected with an output end of the plasma generator 1, a power supply of the plasma generator 1 adopts a TDGC 2-1 type single-phase contact type autotransformer, and the oscilloscope 3 is a GDS-820C oscilloscope;
the discharge reaction vessel includes:
a threaded copper rod 5;
the high-voltage electrode 8 is connected with one end of the threaded copper rod 5, the other end of the threaded copper rod 5 is connected with a power output end of the plasma generator 1 through a lead, the high-voltage electrode 8 is a rectangular copper plate, and is 9cm long, 8cm wide and 0.15cm thick; the length of the threaded copper rod is 5 cm; the thickness of the quartz glass container 6 is 0.2cm, and the size of the high-voltage electrode 8 is smaller than the bottom area of the quartz glass container 6;
the high-voltage electrode 8 is tightly contacted with the bottom of the quartz glass container 6, a copper sulfate pentahydrate solution 7 is filled in the quartz glass container 6, so that the uniform discharge in the discharge process is ensured, and the high-voltage electrode is prevented from being overheated in the discharge process due to the evaporation of the copper sulfate pentahydrate solution;
the low-voltage electrode 4 is arranged opposite to and parallel to the high-voltage electrode 8;
the low-voltage electrode 4 is arranged at the bottom of the sludge reaction tank 10 and is in close contact with the bottom of the sludge reaction tank 10, the sludge reaction tank 10 is an acrylic reaction tank and has the same size as the quartz glass container 6, and the low-voltage electrode 4 is a rectangular copper plate and has the same size as the high-voltage electrode 8;
the low-voltage electrode 4 is connected with the power output end of the plasma generator 1 through a lead and is grounded;
the quartz glass container 6 and the sludge reaction tank 10 are covered with an insulating plate 11, and the threaded copper rod 5 vertically penetrates through the insulating plate 11;
The embodiments of the present invention have been described in detail with reference to the above examples, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. The experimental device for cracking sludge through dielectric barrier discharge is characterized by comprising a plasma generator (1), a transformer (2), an oscilloscope (3) and a discharge reaction container, wherein the input end of the plasma generator (1) is connected with the transformer (2), and the oscilloscope (3) is connected with the output end of the plasma generator (1);
the discharge reaction vessel includes:
a threaded copper bar (5);
the high-voltage electrode (8), the high-voltage electrode (8) is connected with one end of the threaded copper rod (5), and the other end of the threaded copper rod (5) is connected with the power output end of the plasma generator (1) through a lead;
the quartz glass container (6), the said high voltage electrode (8) is contacted closely with the bottom of the quartz glass container (6);
the low-voltage electrode (4), this low-voltage electrode (4) and stated high-voltage electrode (8) are relatively parallel to set up;
the low-voltage electrode (4) is arranged at the bottom of the sludge reaction tank (10) and is in close contact with the bottom of the sludge reaction tank (10);
the low-voltage electrode (4) is connected with the power output end of the plasma generator (1) through a lead (14) and is grounded;
the quartz glass container (6) and the sludge reaction tank (10) are covered with an insulating plate (11), and the threaded copper rod (5) vertically penetrates through the insulating plate (11).
2. The experimental device for testing sludge breakdown through dielectric barrier discharge according to claim 1, wherein an acrylic lower panel (15) is placed at the bottom of the discharge reaction container, a plurality of acrylic columns (12) are arranged on the acrylic lower panel (15), the other ends of the acrylic columns (12) are connected with an acrylic upper panel (13), and the threaded copper rods (5) penetrate through the acrylic upper panel (13).
3. The experimental device for sludge breakdown through dielectric barrier discharge according to claim 1, wherein a TDGC 2-1 type single-phase contact type self-coupling voltage regulator is adopted as a power supply of the plasma generator (1), and the oscilloscope (3) is a GDS-820C oscilloscope.
4. The experimental device for sludge breakdown through dielectric barrier discharge according to claim 1, wherein the high-voltage electrode (8) is a rectangular copper plate, and is 9cm long, 8cm wide and 0.15cm thick; the length of the threaded copper rod (5) is 30 cm; the thickness of the quartz glass container (6) is 0.2cm, and the size of the high-voltage electrode (8) is smaller than the bottom area of the quartz glass container (6); the quartz glass container (6) is filled with blue vitriol solution (7).
5. The experimental device for sludge breakdown through dielectric barrier discharge according to claim 4, wherein the sludge reaction tank (10) is an acrylic reaction tank and has the same size as the quartz glass container (6), and the low-voltage electrode (4) is a rectangular copper plate and has the same size as the high-voltage electrode (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921494577.7U CN210505993U (en) | 2019-09-09 | 2019-09-09 | Experimental device for cracking sludge through dielectric barrier discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921494577.7U CN210505993U (en) | 2019-09-09 | 2019-09-09 | Experimental device for cracking sludge through dielectric barrier discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210505993U true CN210505993U (en) | 2020-05-12 |
Family
ID=70569146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921494577.7U Expired - Fee Related CN210505993U (en) | 2019-09-09 | 2019-09-09 | Experimental device for cracking sludge through dielectric barrier discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210505993U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422977A (en) * | 2019-09-09 | 2019-11-08 | 南昌大学 | Dielectric barrier discharge breaking sludge experimental provision and its application in pretreating sludge |
| CN114436489A (en) * | 2021-11-30 | 2022-05-06 | 中国水产科学研究院渔业机械仪器研究所 | Method for improving anaerobic fermentation effect of activated sludge by using low-temperature plasma technology |
-
2019
- 2019-09-09 CN CN201921494577.7U patent/CN210505993U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422977A (en) * | 2019-09-09 | 2019-11-08 | 南昌大学 | Dielectric barrier discharge breaking sludge experimental provision and its application in pretreating sludge |
| CN114436489A (en) * | 2021-11-30 | 2022-05-06 | 中国水产科学研究院渔业机械仪器研究所 | Method for improving anaerobic fermentation effect of activated sludge by using low-temperature plasma technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Park et al. | Use of microwave pretreatment for enhanced anaerobiosis of secondary sludge | |
| Zou et al. | Pretreatment of food waste with high voltage pulse discharge towards methane production enhancement | |
| CN109354349A (en) | Sludge pre-treatment method and sludge anaerobic fermentation and acid production method | |
| CN101565262A (en) | Combined pre-treatment method for improving sludge disintegration effect and strengthening subsequent anaerobic digestion | |
| Anjum et al. | Visible light photocatalytic disintegration of waste activated sludge for enhancing biogas production | |
| CN210505993U (en) | Experimental device for cracking sludge through dielectric barrier discharge | |
| DE102008033049B4 (en) | Biogas plant for the anaerobic and electrodynamic treatment of substrates by means of a cascaded biogas reactor | |
| CN102557373A (en) | Treatment method of excess sludge | |
| CN101831462A (en) | Anaerobic-fermentation hydrogen production method by pretreating and electrochemically strengthening sludge | |
| CN103613262A (en) | Method and equipment for processing industrial sludge through ultrasonic wave in combination with Fenton reaction and anaerobic digestion | |
| CN114436489A (en) | Method for improving anaerobic fermentation effect of activated sludge by using low-temperature plasma technology | |
| CN104450802B (en) | A kind of processing method of kitchen garbage | |
| Wang et al. | Mechanism of dielectric barrier discharge plasma technology to improve the quantity of short-chain fatty acids in anaerobic fermentation of waste active sludge | |
| Lou et al. | Improving fermentative hydrogen production from sewage sludge by ionizing radiation treatment: a mini-review | |
| Yao et al. | The influence of sludge concentration on its thermophilic anaerobic digestion performance based on low temperature thermal hydrolysis pretreatment | |
| CN111470744A (en) | Method for producing volatile organic acid by anaerobic fermentation of sludge | |
| CN110422977A (en) | Dielectric barrier discharge breaking sludge experimental provision and its application in pretreating sludge | |
| CN101413014A (en) | Method and apparatuses for pretreating sewage plant excess sludge by microwave method and producing hydrogen by fermentation | |
| Chen et al. | Ultrasound-assisted hydrolysis and acidogenesis of solid organic wastes in a rotational drum fermentation system | |
| CN107337328B (en) | Method and reactor for breaking sludge by injecting alkali liquor back in cooperation with ultrasonic waves | |
| Qu et al. | Electropolar effects on anaerobic fermentation of lignocellulosic materials in novel single-electrode cells | |
| Jiang et al. | Disintegration of sewage sludge with bifrequency ultrasonic treatment | |
| Tomczak-Wandzel et al. | Effect of disintegration pretreatment of sewage sludge for enhanced anaerobic digestion | |
| CN112170446A (en) | Microelectric auxiliary anaerobic digestion device for treating organic solid waste | |
| CN108410915A (en) | Promote the method that debirs prepare lactic acid using the fermentation of low temperature plasma electricity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 |