CN108395069B - Sludge reduction device for urban sewage treatment plant - Google Patents
Sludge reduction device for urban sewage treatment plant Download PDFInfo
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- CN108395069B CN108395069B CN201810279329.4A CN201810279329A CN108395069B CN 108395069 B CN108395069 B CN 108395069B CN 201810279329 A CN201810279329 A CN 201810279329A CN 108395069 B CN108395069 B CN 108395069B
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- hydraulic
- cutter
- pipeline
- sludge reduction
- sewage treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
Abstract
The invention provides a sludge reduction device for a town sewage treatment plant, which comprises an ozone generator, a pipeline, a submersible pump, a hydraulic cyclone cutter, a hydraulic shears and a sludge reduction container tank, wherein the pipeline is arranged on the top of the ozone generator; the air outlet end of the ozone generator is communicated with the air inlet of the hydraulic cyclone cutter through a pipeline, the hydraulic cutter is arranged at the rear part of the water outlet of the hydraulic cyclone cutter, the top end surface of the hydraulic cutter is opposite to the water outlet of the hydraulic cyclone cutter, the water flow direction of the hydraulic cyclone cutter is opposite to the spiral direction of the plurality of cyclone cutting pieces, the water outlet of the hydraulic cyclone cutter impacts the surface B, and the water inlet section of the hydraulic cyclone cutter is communicated with the outlet of the submersible pump.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to a sludge reduction device for a town sewage treatment plant.
Background
At present, the number of municipal sewage treatment plants in China breaks through 2000, and the annual sewage treatment capacity is doubled compared with that in fifteen days. During the operation of the sewage treatment process, excess sludge produced by the process is discharged out of the system. The amount of the excess sludge is remarkable, in 2010-2017, the sludge production in China is increased from 5427 ten thousand tons to 7436 ten thousand tons, and the annual growth rate is 4.6 percent. The sludge has high water content, large volume, easy decay and odor and contains a large amount of toxic and harmful substances such as heavy metal, germs and the like. If the waste water is not treated in a harmless, reducing and stabilizing way and is properly disposed, secondary pollution is caused to the environment. At present, sludge treatment modes in China mainly comprise modes of landfill, composting, natural drying, incineration and the like, and the four treatment methods are 65%, 15%, 6% and 3% in percentage. It can be seen that the sludge treatment mode in China is mainly landfill, and the generation of a large amount of sludge seriously threatens the ecological environment. The reduction and harmless treatment of the sludge are a great problem for sewage plants.
The domestic and foreign sludge reduction technology mainly comprises a series of methods such as anaerobic digestion, aerobic digestion, pyrolysis treatment, ozone oxidation technology, ultrasonic wave cracking technology, wet air oxidation technology, supercritical water oxidation technology and the like. Ozone oxidation is one of the commonly used sludge reduction methods, ozone has very strong oxidizability, has broken wall lysis effect to sludge particles, realizes the reduction, but direct ozone oxidation has the problem that ozone is not easy to dissolve in water, the utilization efficiency is low, in addition, the sludge treated by a secondary sedimentation tank of a municipal sewage treatment plant is flocculent, ozone is not easy to deeply contact sludge particles in the flocculent, the total reduction effect is not obvious, and the ozone oxidation sludge reduction technical method needs to be renovated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a sludge reduction device for a town sewage treatment plant, which can enhance the shearing and crushing effects of sludge.
The present invention achieves the above-described object by the following technical means.
A sludge reduction device for a town sewage treatment plant comprises an ozone generator, a pipeline, a submersible pump, a hydraulic cyclone cutter, a hydraulic cutter and a sludge reduction container tank;
the hydraulic cutter comprises a base and a plurality of rotational flow cutting pieces, wherein the base is a rotary body, the diameter of the base is gradually reduced along the direction from the bottom end to the top end along the axis direction, the side wall of the base is an arc surface, the rotational flow cutting pieces are uniformly distributed on the side wall of the base along the spiral direction, the rotational flow cutting pieces are provided with an A surface and a B surface which are opposite, and the included angle between the B surface and the bottom end surface of the base is α and is an acute angle;
the air outlet end of the ozone generator is communicated with the air inlet of the hydraulic cyclone cutter through a pipeline, the hydraulic cutter is arranged at the rear part of the water outlet of the hydraulic cyclone cutter, the top end surface of the hydraulic cutter is opposite to the water outlet of the hydraulic cyclone cutter, the spiral direction of the plurality of cyclone cutting pieces is opposite to the water flow rotating direction of the hydraulic cyclone cutter, the water outlet of the hydraulic cyclone cutter impacts the surface B, and the water inlet section of the hydraulic cyclone cutter is communicated with the outlet of the submersible pump;
the submersible pump, the hydraulic cyclone cutter and the hydraulic cutter are all arranged in the sludge reduction container tank.
Preferably, the hydraulic cyclone cutter comprises a water inlet section, a hollow cylindrical pipe and a hollow hemisphere, the water inlet section is tangentially communicated with the hollow cylindrical pipe, one end of the hollow cylindrical pipe is closed, the other end of the hollow cylindrical pipe is communicated with the hollow hemisphere, a water outlet is formed in the vertex of the hollow hemisphere, and an air inlet is formed in the closed end of the hollow cylindrical pipe.
Preferably, a plurality of threaded supports are arranged on the hydraulic cyclone cutter, the plurality of threaded supports are uniformly distributed on the side face of the hollow hemisphere along the axial direction of the hollow hemisphere, one end of each threaded support is fixedly connected with the hollow hemisphere, a through hole for allowing the threaded support to penetrate through is formed in the base, and the hydraulic cutter is fixedly connected with the threaded supports through fastening nut kits.
Preferably, D is arranged between the bottom end surfaces of the bases, the diameter of the hollow cylindrical tube is D, and D is 1.2-1.5D.
Preferably, the straight-line distance between the top end face of the base and the water outlet is H, and H is 0.10-0.13 d.
Preferably, the height of the base is h, and h is 0.25-0.30 d.
Preferably, α, d and H satisfy the following relations:
preferably, the pipeline comprises a first pipeline and a second pipeline, the first pipeline and the second pipeline are polytetrafluoroethylene pipelines, the air outlet end of the ozone generator is communicated with one end of the first pipeline, the other end of the first pipeline is communicated with one end of the second pipeline through an air flow regulating valve, and the other end of the second pipeline is communicated with the air inlet of the hydrocyclone.
Preferably, the export of immersible pump communicates with the one end of outer silk reducing pipe, the other end of outer silk reducing pipe passes through the internal thread loose joint and feeds through with the section of intaking, outer silk reducing pipe is along the one end that is close to the immersible pump to the one end of keeping away from the immersible pump, and the diameter diminishes gradually.
The invention has the beneficial effects that:
1) according to the invention, by designing the hydraulic cyclone cutter and the hydraulic shear with opposite rotation directions, the shearing and crushing effects of the sludge are enhanced;
2) the invention utilizes the design of combining ozone oxidation with the hydraulic cyclone cutter and the hydraulic shear, increases the mass transfer efficiency of ozone, further cuts and breaks sludge, improves the sludge reduction efficiency, and is economical and energy-saving.
Drawings
FIG. 1 is a schematic structural diagram of a sludge reduction device of a municipal wastewater treatment plant according to the invention;
FIG. 2 is an isometric view of a sludge reduction device main body of a municipal wastewater treatment plant according to the invention;
FIG. 3 is a schematic view of the hydrocyclone in accordance with the present invention;
FIG. 4 is a schematic view of a hydraulic cutter according to the present invention;
FIG. 5 is a schematic structural view of a hydraulic cutter according to the present invention;
FIG. 6 is a first schematic view of the connection between the hydrocyclone and the hydraulic shears according to the present invention;
FIG. 7 is a second schematic view of the connection of the hydrocyclone and the hydraulic shears of the present invention;
FIG. 8 is a first graph illustrating the test results of the embodiment of the present invention;
FIG. 9 is a second chart illustrating the test effect of the embodiment of the present invention.
In the figure:
1. an ozone generator; 2. a first conduit; 3. an airflow regulating valve; 4. a second conduit; 5. a quick connector; 6. internally connecting a live wire; 7. an external thread reducer pipe; 8. a submersible pump; 9. a hydraulic cyclone cutter; 901. a water inlet section; 902. a hollow cylindrical tube; 903. a hollow hemisphere; 904. a water outlet; 905. a threaded support; 10. a hydraulic cutter; 1001. a base; 1002. and (6) a rotational flow cutting blade 11 is used for fastening the nut sleeve.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
As shown in fig. 1 and 2, the sludge reduction device for the town sewage treatment plant comprises an ozone generator 1, a pipeline, a submersible pump 8, a hydraulic cyclone cutter 9, a hydraulic cutter 10 and a sludge reduction container tank 12.
As shown in fig. 3 and 6, the hydrocyclone 9 of the present invention includes a water inlet section 901, a hollow cylindrical pipe 902 and a hollow hemisphere 903, wherein the water inlet section 901 is tangentially communicated with the hollow cylindrical pipe 902, one end of the hollow cylindrical pipe 902 is closed, the other end is communicated with the hollow hemisphere 903, a water outlet 904 is disposed at the vertex of the hollow hemisphere 903, and an air inlet is disposed at the closed end of the hollow cylindrical pipe 902.
As shown in fig. 4 and 5, the hydraulic cutter 10 according to the present invention includes a base 1001 and a plurality of rotary cutting blades 1002, wherein the base 1001 is a solid of revolution, the diameter of the base 1001 gradually decreases from the bottom end to the top end along the axial direction, the side wall is an arc surface, the plurality of rotary cutting blades 1002 are uniformly distributed on the side wall of the base 1001 along the spiral direction, the rotary cutting blades 1002 have a surface a and a surface B opposite to each other, and an included angle between the surface B and the bottom end surface of the base 1001 is α, which is an acute angle.
As shown in fig. 6 and 7, a plurality of screw supports 905 are arranged on the hydrocyclone 9, the plurality of screw supports 905 are uniformly distributed on the side surface of the hollow hemisphere 903 along the axial direction of the hollow hemisphere 903, one end of the plurality of screw supports 905 is fixedly connected with the hollow hemisphere 903, a through hole for allowing the screw supports 905 to pass through is arranged on the base 1001, and the hydraulic cutter 10 is fixedly connected with the screw supports 905 through a fastening nut kit 11.
D is arranged between the bottom end surfaces of the bases 1001, the diameter of the hollow cylindrical tube 902 is D, D is 1.2-1.5D, the linear distance between the top end surface of the base 1001 and the water outlet 904 is H, H is 0.10-0.13D, and the α, D and H satisfy the following relational expression:
the pipeline includes first pipeline 2 and second pipeline 4, first pipeline 2 and second pipeline 4 are polytetrafluoroethylene pipeline, ozone generator 1's the end of giving vent to anger communicates with the one end of first pipeline 2, the other end of first pipeline 2 passes through the one end intercommunication of airflow control valve 3 with second pipeline 4, the air inlet of hydraulic cyclone cutter 9 is equipped with quick connector 5, the other end and the quick connector 5 intercommunication of second pipeline 4. The export of immersible pump 8 and the one end intercommunication of outer silk reducing pipe 7, the other end of outer silk reducing pipe 7 through interior silk loose joint 6 with advance water section 901 intercommunication, outer silk reducing pipe 7 along the one end that is close to immersible pump 8 to the one end of keeping away from immersible pump 8, the diameter diminishes gradually for rivers assemble.
The hydraulic shears 10 are arranged at the rear parts of the water outlets of the hydraulic cyclone cutters 9, the top end surfaces of the hydraulic shears 10 are opposite to the water outlets of the hydraulic cyclone cutters 9, the spiral directions of the plurality of cyclone cutting pieces 1002 are opposite to the water flow rotating direction of the hydraulic cyclone cutters 9, and the water outlet of the hydraulic cyclone cutters 9 impacts the surface B.
The submersible pump 8, the hydraulic cyclone cutter 9 and the hydraulic shear 10 are all arranged in the sludge reduction container tank 12.
The working principle of the invention is as follows:
sludge flow in the outlet of the submersible pump 8 tangentially enters the hydraulic cyclone cutter 9 to form vortex flow, a negative pressure area is formed in the center of the vortex flow, ozone is generated by the ozone generator 1, and the ozone is sucked in through the first pipeline 2, the air flow regulating valve 3 and the second pipeline 4 by the negative pressure of the quick plug-in connector 5 of the hydraulic cyclone cutter 9 to form an ozone gas column; the sludge flow and the sucked ozone gas column are cut by the hydraulic cyclone at the outlet of the hydraulic cyclone cutter 9, the sludge in the sludge flow is cut into sludge fine particles, and the ozone gas column is cut into ozone micro-bubbles; the sludge particles and ozone microbubbles pass through the water outlet 904 of the hydraulic cyclone cutter 9 and then are cut again by the hydraulic cutter 10, and are further crushed and atomized to form sludge ultrafine particles and ozone ultrafine bubbles, as shown in fig. 8; ozone ultramicro bubbles are efficiently dissolved in the sludge ultrafine particle flow, and strong-oxidizing ozone breaks the wall and dissolves the cell of the ultrafine sludge particles, so that intracellular organic matters (protein, nucleic acid, polysaccharide and the like) are released into a liquid phase. The SCOD of the sludge solution is improved; in addition, microbubble ozone reacts with sludge flocs and intracellular substances and is mineralized, so that organic substances are converted into inorganic substances, the TCOD of the sludge solution is reduced, sludge lysate is oxidized and degraded by ozone, and the sludge is directly reduced on site after a period of time, as shown in figure 9, the sludge is settled in the first measuring cylinder without treatment, the sludge is settled in the second measuring cylinder in the treatment process of the invention, and the sludge is settled in the third measuring cylinder in the treatment process of the invention, so that the sludge can be effectively reduced in figure 9.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (9)
1. A sludge reduction device for a town sewage treatment plant is characterized by comprising an ozone generator (1), a pipeline, a submersible pump (8), a hydraulic cyclone cutter (9), a hydraulic cutter (10) and a sludge reduction container tank (12);
the hydraulic shears (10) comprises a base (1001) and a plurality of rotational flow cutting pieces (1002), wherein the base (1001) is a revolving body, the diameter of the base (1001) is gradually reduced along the direction from the bottom end to the top end along the axis direction, the side wall of the base (1001) is an arc surface, the rotational flow cutting pieces (1002) are uniformly distributed on the side wall of the base (1001) along the spiral direction, the rotational flow cutting pieces (1002) are provided with an A surface and a B surface which are opposite, and the included angle between the B surface and the bottom end surface of the base (1001) is α and is an acute angle;
the air outlet end of the ozone generator (1) is communicated with an air inlet of the hydraulic cyclone cutter (9) through a pipeline, the hydraulic cutter (10) is installed at the rear part of the water outlet of the hydraulic cyclone cutter (9), the top end face of the hydraulic cutter (10) is right opposite to the water outlet of the hydraulic cyclone cutter (9), the spiral direction of the plurality of cyclone cutting pieces (1002) is opposite to the water flow rotating direction of the hydraulic cyclone cutter (9), the water outlet of the hydraulic cyclone cutter (9) impacts the surface B, and the water inlet section of the hydraulic cyclone cutter (9) is communicated with the outlet of the submersible pump (8);
the submersible pump (8), the hydraulic cyclone cutter (9) and the hydraulic shear (10) are all arranged in the sludge reduction container tank (12).
2. The sludge reduction device of the urban sewage treatment plant according to claim 1, wherein the hydrocyclone (9) comprises a water inlet section (901), a hollow cylindrical pipe (902) and a hollow hemisphere (903), the water inlet section (901) is tangentially communicated with the hollow cylindrical pipe (902), one end of the hollow cylindrical pipe (902) is closed, the other end of the hollow cylindrical pipe is communicated with the hollow hemisphere (903), a water outlet (904) is formed in the vertex of the hollow hemisphere (903), and an air inlet is formed in the closed end of the hollow cylindrical pipe (902).
3. The sludge reduction device of the town sewage treatment plant according to claim 2, wherein the hydraulic cyclone cutter (9) is provided with a plurality of threaded brackets (905), the plurality of threaded brackets (905) are uniformly distributed on the side surface of the hollow hemisphere (903) along the axial direction of the hollow hemisphere (903), one end of each of the plurality of threaded brackets (905) is fixedly connected with the hollow hemisphere (903), the base (1001) is provided with a through hole for the threaded bracket (905) to pass through, and the hydraulic shear (10) is fixedly connected with the threaded brackets (905) through a fastening nut kit (11).
4. The sludge reduction device for the town sewage treatment plant according to claim 2, wherein D is arranged between bottom end surfaces of the bases (1001), and the diameter of the hollow cylindrical pipe (902) is D, wherein D is 1.2-1.5D.
5. The sludge reduction device for the urban sewage treatment plant according to claim 4, wherein a straight-line distance between the top end surface of the base (1001) and the water outlet (904) is H, and H is 0.10-0.13 d.
6. The sludge reduction device for the town sewage treatment plant according to claim 4, wherein the height of the base (1001) is h, and h is 0.25-0.30 d.
7. The sludge reduction device of the town sewage treatment plant according to claim 5, wherein α, d and H satisfy the following relation:
8. the sludge reduction device of the town sewage treatment plant according to claim 1, wherein the pipeline comprises a first pipeline (2) and a second pipeline (4), the first pipeline (2) and the second pipeline (4) are both polytetrafluoroethylene pipelines, the air outlet end of the ozone generator (1) is communicated with one end of the first pipeline (2), the other end of the first pipeline (2) is communicated with one end of the second pipeline (4) through an air flow regulating valve (3), and the other end of the second pipeline (4) is communicated with the air inlet of the hydrocyclone (9).
9. The sludge reduction device of the town sewage treatment plant according to claim 2, wherein an outlet of the submersible pump (8) is communicated with one end of an outer wire reducer (7), the other end of the outer wire reducer (7) is communicated with the water inlet section (901) through an inner wire loose joint (6), and the diameter of the outer wire reducer (7) is gradually reduced from one end close to the submersible pump (8) to one end far away from the submersible pump (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810279329.4A CN108395069B (en) | 2018-03-30 | 2018-03-30 | Sludge reduction device for urban sewage treatment plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810279329.4A CN108395069B (en) | 2018-03-30 | 2018-03-30 | Sludge reduction device for urban sewage treatment plant |
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| CN108395069A CN108395069A (en) | 2018-08-14 |
| CN108395069B true CN108395069B (en) | 2020-02-21 |
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| CN201810279329.4A Active CN108395069B (en) | 2018-03-30 | 2018-03-30 | Sludge reduction device for urban sewage treatment plant |
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| CN114315077A (en) * | 2021-12-15 | 2022-04-12 | 江苏大学 | Bottom mud in-situ ozone oxidation reduction device and use method |
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|---|---|---|---|---|
| JPH091196A (en) * | 1995-06-26 | 1997-01-07 | Meidensha Corp | Ozone treatment of sewage sludge and device therefor |
| CN204099269U (en) * | 2014-05-16 | 2015-01-14 | 江苏大学 | A kind of Multi-vane type Non-blinding pump impeller |
| CN205740489U (en) * | 2016-06-16 | 2016-11-30 | 山东弗雷德环保设备有限公司 | A kind of elevated without blocking energy-conservation rotational flow aeration device |
| CN107311422A (en) * | 2017-08-11 | 2017-11-03 | 江苏浦坤纳米科技有限公司 | A kind of sludge reduction reaction system and processing method |
| CN107324626A (en) * | 2017-08-11 | 2017-11-07 | 江苏浦坤纳米科技有限公司 | A kind of ozone complete utilization sludge reduction reaction system and method for sludge treatment |
| CN107337331A (en) * | 2017-07-25 | 2017-11-10 | 江苏大学 | A kind of ozone convolution cavitation persulfate synergistic oxidation sludge reduction method |
-
2018
- 2018-03-30 CN CN201810279329.4A patent/CN108395069B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH091196A (en) * | 1995-06-26 | 1997-01-07 | Meidensha Corp | Ozone treatment of sewage sludge and device therefor |
| CN204099269U (en) * | 2014-05-16 | 2015-01-14 | 江苏大学 | A kind of Multi-vane type Non-blinding pump impeller |
| CN205740489U (en) * | 2016-06-16 | 2016-11-30 | 山东弗雷德环保设备有限公司 | A kind of elevated without blocking energy-conservation rotational flow aeration device |
| CN107337331A (en) * | 2017-07-25 | 2017-11-10 | 江苏大学 | A kind of ozone convolution cavitation persulfate synergistic oxidation sludge reduction method |
| CN107311422A (en) * | 2017-08-11 | 2017-11-03 | 江苏浦坤纳米科技有限公司 | A kind of sludge reduction reaction system and processing method |
| CN107324626A (en) * | 2017-08-11 | 2017-11-07 | 江苏浦坤纳米科技有限公司 | A kind of ozone complete utilization sludge reduction reaction system and method for sludge treatment |
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Effective date of registration: 20230927 Address after: 225300 Taizhou Economic Development Zone, Jiangsu Province, innovation and entrepreneurship Industrial Park standard plant phase 4, No. 1 Machinery Plant Patentee after: JIANGSU HUANCHUAN ENVIRONMENTAL ENGINEERING CO.,LTD. Address before: Zhenjiang City, Jiangsu Province, 212013 Jingkou District Road No. 301 Patentee before: JIANGSU University |
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