CN114149167B - Device and method for treating residual sludge by cavitation technology to release internal carbon source - Google Patents
Device and method for treating residual sludge by cavitation technology to release internal carbon source Download PDFInfo
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- CN114149167B CN114149167B CN202111565261.4A CN202111565261A CN114149167B CN 114149167 B CN114149167 B CN 114149167B CN 202111565261 A CN202111565261 A CN 202111565261A CN 114149167 B CN114149167 B CN 114149167B
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- 239000010802 sludge Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 27
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 14
- 230000001502 supplementing effect Effects 0.000 claims description 13
- 238000005336 cracking Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 9
- 230000003020 moisturizing effect Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 210000002421 cell wall Anatomy 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 241001052560 Thallis Species 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a device and a method for treating residual sludge by cavitation technology to release an internal carbon source, and belongs to the technical field of energy conservation and environmental protection. Including feed tank, retort, moisturizing jar, PK1 rotor cavitation machine, PK2 rotor cavitation machine, H1 screw feed pump and H2 screw feed pump, be provided with agitating unit in the feed tank, the feed tank passes through the high-pressure line and links to each other with the retort, and the moisturizing jar passes through the high-pressure line and links to each other with the retort, and PK1 rotor cavitation machine, H1 screw feed pump and retort pass through the high-pressure line and form first cavitation return circuit, PK2 rotor cavitation machine, H2 screw feed pump and retort pass through the high-pressure line and form the second cavitation return circuit. The invention has simple structure, can effectively solve the problems of insufficient carbon source and disposal of residual sludge in the activated sludge process treatment process of the sewage plant, and is green, environment-friendly and pollution-free.
Description
Technical Field
The invention relates to the technical field of energy conservation and environmental protection, in particular to a device and a method for treating residual sludge by cavitation technology to release an internal carbon source.
Background
The sewage treatment refers to a purification process for treating sewage to reach a certain water body or the requirement of being capable of being reused, a large amount of sewage can be generated in life and various industrial production of people in cities, and the sewage can cause serious pollution to the environment if the sewage is directly discharged without treatment.
The method has the advantages that the method is widely used for treating urban sewage treatment plants at home and abroad, and has the great disadvantage that a large amount of surplus sludge is generated, the water content of the surplus sludge is over 99 percent, the content of organic matters is about 70-85 percent, and the surplus sludge is an extremely complex non-uniform mass composed of organic residues, bacterial thalli, inorganic particles, colloid and other substances. Most of organic substances in the excess sludge exist in microbial cells, and the cell walls of the microbial cells are of a stable semi-rigid structure and play a role in protecting the cells. The cell walls are inert substances which are difficult to degrade by organisms, and are difficult to crack, so that a longer residence time is required in the sludge digestion process. Semi-rigid cell wall rupture is difficult and becomes the most important factor affecting the rate of sludge rupture.
Therefore, how to provide a novel device and a method for treating the residual sludge to release the internal carbon source becomes a problem to be considered by the person skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a device and a method for treating residual sludge by cavitation technology to release internal carbon source, and the device and the method are free from adding any chemical reagent in the project implementation process, are a method for physically cracking the internal carbon source of the sludge, cannot cause secondary pollution to the environment, and are a green, environment-friendly and low-cost treatment technology.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a carbon source device in cavitation technique treatment excess sludge release, includes feed tank, retort, moisturizing jar, PK1 rotor cavitation machine, PK2 rotor cavitation machine, H1 screw feed pump and H2 screw feed pump, the feed tank passes through the high-pressure line and links to each other with the retort, the moisturizing jar passes through the high-pressure line and links to each other with the retort, PK1 rotor cavitation machine, H1 screw feed pump and retort pass through the high-pressure line and form first cavitation return circuit, PK2 rotor cavitation machine, H2 screw feed pump and retort pass through the high-pressure line and form the second cavitation return circuit.
Further, the device also comprises a liquid level meter, a pressure sensor and a resistance temperature converter, wherein the liquid level meter, the pressure sensor and the resistance temperature converter are all arranged in the reaction tank.
Further, the reactor further comprises a feed pump, wherein the feed pump is arranged between the feed tank and the reaction tank.
Further, the reaction tank further comprises a check valve, and the check valve is arranged between the water supplementing tank and the reaction tank.
Further, the water replenishing tank further comprises a vacuum pump, and the vacuum pump is arranged between the check valve and the water replenishing tank.
Further, the reactor also comprises a finished product discharge pump, wherein the finished product discharge pump is arranged at the bottom of the reaction tank, and the finished product discharge pump is connected with the reaction tank through a pipeline.
Further, the test device electric control cabinet is further included, and the H1 screw feeding pump, the H2 screw feeding pump, the pressure sensor, the resistance temperature converter, the feeding pump, the vacuum pump and the finished product discharging pump are all electrically connected with the test device electric control cabinet.
A method for treating excess sludge by cavitation technology to release an internal carbon source comprises the following steps:
s1, preparing excess sludge;
s2, quantitatively loading excess sludge into a feed tank, and stirring and preprocessing the excess sludge;
s3, starting a feed pump, and injecting the residual sludge into the reaction tank;
s4, after a liquid level meter senses that the raw materials reach the liquid level requirement in the reaction tank, simultaneously starting a first cavitation loop and a second cavitation loop through an electric control cabinet of a test device, continuously pumping sludge in the reaction tank by an H1 screw feed pump and an H2 screw feed pump, and conveying the sludge to a PK1 rotor cavitation machine and a PK2 rotor cavitation machine for cyclic cavitation cracking reaction;
s5, after the pressure sensor and the resistance temperature converter sense that the pressure and the temperature in the reaction tank reach set values, the electric control cabinet of the test device starts a vacuum pump to pump steam and impurity gas generated by the reaction tank into the water supplementing tank for condensation and liquefaction;
s6, after the reaction is completed, closing the first cavitation loop and the second cavitation loop, opening a product discharge pump, and leading out a finished product.
The beneficial effects of the invention are as follows:
1. the cavitation technology is utilized to crack cavitation sludge, so that the problems of insufficient carbon source and residual sludge treatment existing in an activated sludge process treatment technology of a sewage plant are effectively solved, a semi-rigid biological cell wall structure of the sludge can be quickly cracked, organic components in sludge cells overflow, the cracking rate can reach 50%, the sludge is integrated into a water body, after the cavitation cracking reaction of the sludge is completed, microbial cell walls in the sludge are greatly cracked, the number and activity of microorganisms are greatly reduced, the sludge states tend to be stable, at the moment, the precipitability and dewatering performance of the cracked sludge are greatly increased, the production amount of the sludge is reduced, and meanwhile, the release of organic components can be used as a carbon source of a biomass treatment unit for recycling, so that the treatment cost and the running cost of enterprises are greatly reduced, and the harmless, stable and recycling of the sludge are realized.
2. In the implementation process of the invention, no chemical reagent is added, so that the method is a method for physically treating the carbon source in the sludge, does not cause secondary pollution to the environment, and is a green, environment-friendly and low-cost treatment technology.
Drawings
FIG. 1 is a schematic diagram of the connection relationship of the present invention.
Wherein, 1-a feeding tank; 2-a reaction tank; 3-a water supplementing tank; a 4-PK1 rotor cavitation machine; a 5-PK2 rotor cavitation machine; a 6-H1 screw feed pump; 7-H2 screw feed pump; 8-stirring device; 9-a liquid level gauge; 10-a pressure sensor; 11-a resistance temperature converter; 12-a feed pump; 13-check valve; 14-a vacuum pump; 15-a finished product discharge pump; 16-high pressure pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
As shown in fig. 1, the invention discloses an internal carbon source device for treating residual sludge by cavitation technology, which comprises a feed tank 1, a reaction tank 2, a water supplementing tank 3, a PK1 rotor cavitation machine 4, a PK2 rotor cavitation machine 5, an H1 screw feed pump 6 and an H2 screw feed pump 7, wherein a stirring device 8 is arranged in the feed tank 1, the feed tank 1 is connected with the reaction tank 2 through a high-pressure pipeline 16, a feed pump 12 is further arranged between the feed tank 1 and the reaction tank 2, the feed pump 12 can convey residual sludge after pretreatment to the reaction tank 2, the water supplementing tank 3 is connected with the reaction tank 2 through the high-pressure pipeline 16, the PK1 rotor cavitation machine 4, the H1 screw feed pump 6 and the reaction tank 2 form a first cavitation loop through the high-pressure pipeline 16, and the PK2 rotor cavitation machine 5, the H2 screw feed pump 7 and the reaction tank 2 form a second cavitation loop through the high-pressure pipeline 16. The arrangement of the first cavitation loop and the second cavitation loop can continuously circularly extract and cavitate the residual sludge in the reaction tank 2, after the completion of the cavitation cracking reaction of the sludge, the cell walls of microorganisms in the sludge are cracked in a large amount, the number and activity of the microorganisms are also greatly reduced, so that the state of the sludge tends to be stable, the precipitability and the dewatering property of the cracked sludge are also greatly increased, the production of the sludge is reduced, and meanwhile, the release of organic components can be recycled as a carbon source of the biomass treatment unit.
The reaction tank 2 is internally provided with a liquid level meter 9, a pressure sensor 10 and a resistance temperature converter 11, which are used for monitoring the liquid level, the pressure and the temperature of the reaction tank 2, the reaction state in the reaction tank 2 can be monitored through the sensors, and the reaction process can be processed in real time by matching with an electric control cabinet of a test device.
The check valve 13 is arranged between the water supplementing tank 3 and the reaction tank 2, the vacuum pump 14 is arranged between the check valve 13 and the water supplementing tank 3, and the arrangement of the check valve 13 and the vacuum pump 14 can enable steam and high-temperature high-pressure gas generated in the reaction tank 2 to be condensed and liquefied through the water supplementing tank 3, so that the pressure in the reaction tank 2 is reduced, and meanwhile, generated impurity gas is absorbed through the water supplementing tank 3, and the effect of filtering the impurity gas is achieved.
The bottom of the reaction tank 2 is provided with a finished product discharge pump 15, the finished product discharge pump 15 is connected with the reaction tank 2 through a pipeline, the finished product discharge pump 15 can pump and recycle the carbon source slurry after the treatment is completed, the problems of insufficient carbon source and residual sludge treatment existing in the activated sludge process treatment process of a sewage plant are effectively solved, and the treatment cost and the operation cost of enterprises are greatly reduced.
Example 2:
the embodiment discloses a method for treating excess sludge by cavitation technology to release an internal carbon source, which comprises the following steps:
s1, preparing excess sludge;
s2, checking equipment: checking cable insulation, checking hydraulic joints and checking a power supply network;
s3, confirming that a hydraulic circuit valve is opened, a load switch, an automatic switch, a motor protection automatic switch and other control mechanisms are in a closed state; the console is under manual control;
s4, quantitatively loading excess sludge into the feeding tank 1, and stirring and preprocessing the excess sludge to uniformly stir the excess sludge so as to prevent sludge precipitation;
s5, starting a feed pump 12, and injecting excess sludge into the reaction tank 2;
s6, after a liquid level meter 9 senses that the raw materials reach the liquid level requirement in a reaction tank 2, a first cavitation loop and a second cavitation loop are simultaneously started through an electric cabinet of a test device, and an H1 screw feed pump 6 and an H2 screw feed pump 7 continuously pump sludge in the reaction tank and convey the sludge to a PK1 rotor cavitation machine 4 and a PK2 rotor cavitation machine 5 for cyclic cavitation cracking reaction;
s7, after the pressure sensor and the resistance temperature converter 11 sense that the pressure and the temperature in the reaction tank reach set values, the electric control cabinet of the test device starts the vacuum pump 14 to pump the steam and the impurity gas generated by the reaction tank 2 into the water supplementing tank 3 for condensation and liquefaction;
s8, after the reaction is finished, the first cavitation loop and the second cavitation loop are closed, a finished product discharge pump 15 is opened, and the cavitated and cracked slurry finished product is led out, so that the recycling is convenient.
The implementation process of the embodiment does not add any chemical reagent, is a method for physically treating the carbon source in the sludge, does not produce secondary pollution to the environment, and is a green, environment-friendly and low-cost treatment technology.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (8)
1. The device for treating excess sludge to release an internal carbon source by cavitation technology is characterized in that: the device comprises a feeding tank, a reaction tank, a water supplementing tank, a PK1 rotor cavitation machine, a PK2 rotor cavitation machine, an H1 screw feed pump and an H2 screw feed pump, wherein a stirring device is arranged in the feeding tank, the feeding tank is connected with the reaction tank through a high-pressure pipeline, the water supplementing tank is connected with the reaction tank through a high-pressure pipeline, the PK1 rotor cavitation machine, the H1 screw feed pump and the reaction tank form a first cavitation loop through the high-pressure pipeline, and the PK2 rotor cavitation machine, the H2 screw feed pump and the reaction tank form a second cavitation loop through the high-pressure pipeline;
the high-pressure pipeline I and the high-pressure pipeline II are provided with valves, one end of the high-pressure pipeline I is communicated with the reaction tank, the other end of the high-pressure pipeline I is communicated with a first cavitation loop between the H1 screw feed pump and the PK1 rotor cavitation machine, one end of the high-pressure pipeline II is communicated with the reaction tank, and the other end of the high-pressure pipeline II is communicated with a second cavitation loop between the H2 screw feed pump and the PK2 rotor cavitation machine.
2. The device for treating excess sludge to release an internal carbon source by cavitation technology according to claim 1, further comprising a liquid level meter, a pressure sensor and a resistance temperature converter, wherein the liquid level meter, the pressure sensor and the resistance temperature converter are all installed in the reaction tank.
3. The apparatus for treating excess sludge to release an internal carbon source according to claim 2, further comprising a feed pump disposed between the feed tank and the reaction tank.
4. The apparatus for treating excess sludge to release an internal carbon source according to claim 1, further comprising a check valve disposed between the water replenishing tank and the reaction tank.
5. A device for treating excess sludge to release an internal carbon source by cavitation technique as claimed in claim 3, further comprising a vacuum pump disposed between the check valve and the water replenishing tank.
6. The device for treating excess sludge to release internal carbon source by cavitation technique according to claim 5, further comprising a finished product discharge pump, wherein the finished product discharge pump is arranged at the bottom of the reaction tank, and the finished product discharge pump is connected with the reaction tank through a pipeline.
7. The device for treating residual sludge to release an internal carbon source by adopting a cavitation technology according to claim 6, further comprising a test device electric control cabinet, wherein the H1 screw feed pump, the H2 screw feed pump, the liquid level meter, the pressure sensor, the resistance temperature converter, the feed pump, the vacuum pump and the finished product discharge pump are all electrically connected with the test device electric control cabinet.
8. A method of treating excess sludge by cavitation technique to release internal carbon source device according to any one of claims 1-7, comprising the steps of:
s1, preparing excess sludge;
s2, quantitatively loading excess sludge into a feed tank, and stirring and preprocessing the excess sludge;
s3, starting a feed pump, and injecting the residual sludge into the reaction tank;
s4, after a liquid level meter in the reaction tank senses that the raw materials reach the liquid level requirement, simultaneously starting a first cavitation loop and a second cavitation loop through an electric control cabinet of the test device to carry out cavitation cracking reaction;
s5, after the pressure sensor and the resistance temperature converter sense that the pressure and the temperature in the reaction tank reach set values, the electric control cabinet of the test device starts a vacuum pump to pump steam and impurity gas generated by the reaction tank into the water supplementing tank for condensation and liquefaction;
s6, after the reaction is completed, closing the first cavitation loop and the second cavitation loop, opening a product discharge pump, and leading out a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565261.4A CN114149167B (en) | 2021-12-20 | 2021-12-20 | Device and method for treating residual sludge by cavitation technology to release internal carbon source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111565261.4A CN114149167B (en) | 2021-12-20 | 2021-12-20 | Device and method for treating residual sludge by cavitation technology to release internal carbon source |
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| CN114149167A CN114149167A (en) | 2022-03-08 |
| CN114149167B true CN114149167B (en) | 2024-02-06 |
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2021
- 2021-12-20 CN CN202111565261.4A patent/CN114149167B/en active Active
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| JP2004049938A (en) * | 2002-07-16 | 2004-02-19 | Babcock Hitachi Kk | Sludge treatment apparatus and method |
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| CN114149167A (en) | 2022-03-08 |
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