CN215667662U - Sludge reduction system based on ozone bypass treatment - Google Patents
Sludge reduction system based on ozone bypass treatment Download PDFInfo
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- CN215667662U CN215667662U CN202121172675.6U CN202121172675U CN215667662U CN 215667662 U CN215667662 U CN 215667662U CN 202121172675 U CN202121172675 U CN 202121172675U CN 215667662 U CN215667662 U CN 215667662U
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model discloses a sludge decrement system based on ozone bypass treatment, which comprises: a sequencing batch processing unit, a contact reaction unit and an ozone generating unit. The contact reaction unit comprises a contact reactor, a gas-liquid jet device and a tail gas absorption device. The input end of the contact reactor and the output end of the contact reactor are respectively connected with the sequencing batch reactor pipeline, the input end of the gas-liquid jet device and the output end of the gas-liquid jet device are respectively connected with the contact reactor pipeline, and the input end pipeline of the tail gas absorption device is connected with the top of the contact reactor. The sludge reduction system based on the ozone bypass treatment of the utility model performs pressurization mixing on the ozone and the sewage mixed liquid through the gas-liquid jet device, so that the ozone is fully dissolved and is conveyed to the contact reactor through the jet device, thereby greatly improving the ozone oxidation efficiency of the activated sludge and realizing the purpose of sludge reduction in the sewage treatment process.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a sludge reduction system based on ozone bypass treatment.
Background
The activated sludge process, which is the most conventional, economical and effective sewage treatment technology, is widely used in sewage treatment processes, but a large amount of excess sludge is generated in the operation process. Untreated sludge can cause secondary pollution after entering the environment, and poses serious threats to ecosystem and human activities. Generally, the sludge reduction is to minimize the discharge of biosolids from the entire sewage treatment system while ensuring the sewage treatment effect. The ozone oxidation sludge reduction technology is a sludge reduction technology widely adopted at present, and has the biggest characteristics of high sludge dissolution efficiency and easy biodegradation of oxidized sludge mixed liquor.
However, existing ozone oxidation sludge reduction systems generally consist of three parts: ozone oxidation system, biological treatment system and mud return-flow system to, current mud decrement system directly lets in the oxidation system ozone and oxidizes activated sludge, because the influence of mud, the solubility of ozone in the mixed liquid is not high in the oxidation system, thereby makes activated sludge's treatment effeciency not high, and then influences the decrement effect of mud.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a sludge reduction system based on ozone bypass treatment, which addresses the problem of low solubility in the ozone liquid phase in the conventional sludge reduction system.
A sludge decrement system based on ozone bypass treatment comprises a sequencing batch treatment unit, a contact reaction unit and an ozone generation unit. The sequencing batch processing unit is connected with a contact reaction unit pipeline, and the contact reaction unit is connected with an ozone generation unit pipeline.
The sequencing batch type treatment unit comprises a sewage input pipeline, a sequencing batch type reactor, a microcomputer time control switch and a sewage output pipeline. The sewage input pipeline is connected with the input end of the sequencing batch reactor, the output end of the sequencing batch reactor is connected with the sewage output pipeline, and the microcomputer time control switch is electrically connected with the sequencing batch reactor.
The contact reaction unit comprises a contact reactor, a gas-liquid jet device and a tail gas absorption device. The input end of the contact reactor and the output end of the contact reactor are respectively connected with the sequencing batch reactor pipeline, the input end of the gas-liquid jet device and the output end of the gas-liquid jet device are respectively connected with the contact reactor pipeline, and the input end pipeline of the tail gas absorption device is connected with the top of the contact reactor.
In one embodiment, the ozone generating unit includes an ozone generator, an ozone concentration meter, and a gas flow meter, and the ozone generator, the ozone concentration meter, the gas flow meter, and the gas-liquid jet device are sequentially connected by a pipeline.
In one embodiment, the ozone generator includes a gas detection end and a gas output end, the gas detection end, the ozone concentration meter and the input end of the gas flow meter are sequentially connected by a pipeline, and the output end of the gas flow meter and the gas output end of the ozone generator are connected in parallel to the gas-liquid jet device through a pipeline.
In one embodiment, the sequencing batch reactor includes a sequencing batch reactor, a stirring device, an aeration pump, an aerator, a first sludge recycling outlet, a first sludge recycling inlet, and a sludge recycling pump. Agitating unit and aerator correspond respectively and set up inside sequencing batch reation kettle, and sewage input pipeline and sewage output pipeline correspond respectively and connect sequencing batch reation kettle, and the output of aeration pump and the input pipe connection of aerator, first mud circulation export and first mud circulation entry correspond respectively and set up in sequencing batch reation kettle's cauldron wall, and the first mud circulation export of input pipe connection of sludge circulating pump.
In one embodiment, the microcomputer time control switch is electrically connected to the stirring device, the aeration pump and the sludge circulating pump respectively.
In one embodiment, the contact reactor is provided with a second sludge circulation inlet, a second sludge circulation outlet, a jet flow inlet, a jet flow outlet and a tail gas outlet, the second sludge circulation inlet and the jet flow inlet are respectively arranged on the side wall of the contact reactor, the second sludge circulation outlet and the jet flow outlet are respectively arranged on the bottom wall of the contact reactor, and the tail gas outlet is arranged on the top wall of the contact reactor; and the second sludge circulation inlet is connected with an output end pipeline of the sludge circulation pump, the second sludge circulation outlet is connected with the first sludge circulation inlet pipeline, and the tail gas outlet is connected with the tail gas absorption device pipeline.
In one embodiment, the gas-liquid jet device includes a jet device, a liquid flow meter, and a booster pump, one end of the jet device is connected to the jet inlet pipe, the other end of the jet device is connected to one end of the liquid flow meter, an output end of the booster pump is connected to the other end of the liquid flow meter, and an input end of the booster pump is connected to the jet outlet pipe.
Above-mentioned sludge decrement system based on ozone bypass treatment carries out the pressure boost through the mixed liquid of gas-liquid fluidic device in with ozone and contact reactor and mixes to make ozone fully dissolve in mixed liquid, and carry out ozone oxidation treatment to activated sludge in the contact reactor through the ejector, with this ozone oxidation efficiency that improves activated sludge greatly, realize the purpose of sewage treatment in-process sludge decrement. The sewage to be treated is treated by adopting an activated sludge method in the sequencing batch reactor, and the activated sludge is subjected to ozone oxidation by the contact reactor through the circulating pump and then flows back to the sequencing batch reactor for recycling, so that the ozone bypass treatment of the activated sludge is realized, and the in-situ reduction of the sludge is further realized.
Drawings
FIG. 1 is a schematic diagram showing the structure of a sludge reduction system based on ozone bypass treatment in one embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1, the present invention discloses a sludge reduction system based on ozone bypass treatment, which comprises a sequencing batch processing unit 1, a contact reaction unit 2 and an ozone generation unit 3. Wherein, sequencing batch processing unit 1 is connected with contact reaction unit 2 by pipeline, and contact reaction unit 2 is connected with ozone generating unit 3 by pipeline. In this embodiment, the sequencing batch type treatment unit 1 is capable of performing an intermittent aeration treatment of the sewage to be treated in the sludge reducing system of the present invention by the sequencing batch activated sludge process. Sequencing batch processing unit 1 integrates processing functions such as homogenization, primary dust, biodegradation and secondary sedimentation, so that sewage and activated sludge to be processed do not need to pass through a complex backflow system, a large amount of construction space is saved, and large intermittent discharge and large flow change are met. In addition, the contact reaction unit 2 makes the activated sludge in the sludge reduction system and the ozone generated by the ozone generation unit 3 perform sufficient contact reaction, and the influence of the ozone treatment on a sewage original system can be reduced to the maximum extent by a bypass treatment mode, the contact between the ozone and the activated sludge is enhanced, the reaction between the ozone and the activated sludge is more sufficient, and the efficiency of the ozone treatment on the activated sludge is further improved.
Referring to fig. 1, a sequencing batch processing unit 1 includes a wastewater input pipe 11, a sequencing batch reactor 12, a microcomputer time switch 13, and a wastewater output pipe 14. Wherein, the sewage input pipeline 11 is connected with the input end of the sequencing batch reactor 12, the output end of the sequencing batch reactor 12 is connected with the sewage output pipeline 14, and the microcomputer time control switch 13 is electrically connected with the sequencing batch reactor 12. In this embodiment, the sewage to be treated is introduced into the sequencing batch reactor 12 through the sewage inlet pipe 11 for treatment, the treated sewage is discharged from the sequencing batch reactor 12 through the sewage outlet pipe 14, and the microcomputer controlled time switch 13 controls the intermittent treatment of the sequencing batch reactor 12, so that the sewage in the sludge reduction system can be treated in a plurality of ways in the same sequencing batch reactor 12.
Referring to fig. 1, the contact reaction unit 2 includes a contact reactor 21, a gas-liquid jet device 22, and a tail gas absorption device 23. The input end of the contact reactor 21 and the output end of the contact reactor 21 are respectively connected with the sequencing batch reactor 12 through pipelines, the input end of the gas-liquid jet device 22 and the output end of the gas-liquid jet device 22 are respectively connected with the contact reactor 21 through pipelines, and the input end of the tail gas absorption device 23 is connected with the top of the contact reactor 21 through a pipeline. In the present embodiment, the contact reactor 21 is used for contact reaction of activated sludge and ozone generated by the ozone generating unit 3. In practical application, the activated sludge in the sequencing batch reactor 12 is conveyed from the input end of the contact reactor 21 to the contact reactor 21 through a pipeline, and after the activated sludge is subjected to contact reaction with ozone, the activated sludge flows back to the sequencing batch reactor 12 through the output end of the contact reactor 21 to participate in sewage treatment; meanwhile, ozone generated in the ozone generating unit 3 is transmitted to the contact reactor 21 through the gas-liquid jet device 22 to react with activated sludge, and the gas-liquid jet device 22 can enable the ozone to be fully contacted and mixed with mixed liquid in the pipeline, so that the ozone is fully dissolved and then enters the contact reactor 21 to be mixed with the activated sludge, and the treatment efficiency of the activated sludge can be effectively improved. After the sludge is subjected to ozone oxidation, organic matters in partial solid phase of the sludge are dissolved and enter mixed liquid, so that the degradability of microorganisms in the sewage is improved, the solid quantity generated by the whole sewage treatment system is reduced, and the sludge reduction is realized. Tail gas generated in the process of oxidizing the activated sludge by ozone is conveyed to a tail gas collecting device 23 through a pipeline for absorption treatment.
Referring to fig. 1, the ozone generating unit 3 includes an ozone generator 31, an ozone concentration meter 32, and a gas flow meter 33. The ozone generator 31 comprises a gas detection end 311 and a gas output end 312, the gas detection end 311, the ozone concentration meter 32 and the input end of the gas flowmeter 33 are sequentially connected through a pipeline, and the output end of the gas flowmeter 33 and the gas output end 312 of the ozone generator 31 are communicated with the gas-liquid jet device 22 in parallel through a pipeline. In the present embodiment, the ozone generated in the ozone generator 31 is transmitted to the gas-liquid jet device 22 in the contact reaction unit 2 through the gas detection end 311 and the gas output end 312, so that the ozone and the mixed liquid in the gas-liquid jet device 22 are fully contacted and mixed, and then enter the contact reactor 21 for full reaction. Wherein, ozone flows through the ozone concentration meter 32 and the gas flowmeter 33 through the gas detection end 311, the ozone concentration meter 32 and the gas flowmeter 33 monitor the ozone data and feed back the concentration data and the flow data of the ozone to the operator, and the operator can adjust the gas production efficiency of the ozone generator 31 according to the concentration data and the flow data of the ozone.
Referring to fig. 1, the sequencing batch reactor 12 includes a sequencing batch reactor 121, a stirring device 122, an aeration pump 123, an aerator 124, a first sludge recycling outlet 125, a first sludge recycling inlet 126, and a sludge recycling pump 127. Agitating unit 122 and aerator 124 correspond respectively and set up inside batch formula reation kettle 121, sewage input pipeline 11 and sewage output pipeline 14 correspond respectively and communicate batch formula reation kettle 121, the output of aeration pump 123 and the input pipe connection of aerator 124, first mud circulation export 125 and first mud circulation entry 126 correspond respectively and set up in batch formula reation kettle 121's cauldron wall, first mud circulation export 125 of input pipe connection of sludge circulation pump 127, microcomputer time switch 13 corresponds electric connection agitating unit 122 respectively, aeration pump 123 and sludge circulation pump 127. In the present embodiment, the output end of the sludge circulation pump 127 is connected to the contact reactor 21 through a pipe, and the contact reactor 21 is connected to the first sludge circulation inlet 126 through a pipe. In practical application, sewage treatment is carried out in the sequencing batch reactor 121; the stirring device 122 stirs the sewage in the sequencing batch reactor 121; the aeration pump 123 pumps oxygen into the aerator 124, so that the aerator 124 aerates the sewage; activated sludge for treating wastewater in sequencing batch reactor 121 is transferred to contact reactor 21 through first sludge circulation outlet 125 and sludge circulation pump 127, and the activated sludge is subjected to ozone oxidation and then flows back to sequencing batch reactor 121 through first sludge circulation inlet 126 for recycling.
Referring to fig. 1, the contact reactor 21 is provided with a second sludge circulation inlet 211, a second sludge circulation outlet 212, a jet inlet 213, a jet outlet 214, and a tail gas outlet 215, wherein the second sludge circulation inlet 211 and the jet inlet 213 are respectively disposed on a side wall of the contact reactor 21, the second sludge circulation outlet 212 and the jet outlet 214 are respectively disposed on a bottom wall of the contact reactor 21, and the tail gas outlet 215 is disposed on a top wall of the contact reactor 21; the second sludge circulation inlet 211 is connected to the output end of the sludge circulation pump 127, the second sludge circulation outlet 212 is connected to the first sludge circulation inlet 126, and the tail gas outlet 215 is connected to the tail gas absorption device 23. The gas-liquid jet device 22 comprises a jet device 221, a liquid flow meter 222 and a booster pump 223, wherein one end of the jet device 221 is connected with the jet inlet 213 through a pipeline, the other end of the jet device 221 is connected with one end of the liquid flow meter 222 through a pipeline, the output end of the booster pump 223 is connected with the other end of the liquid flow meter 222 through a pipeline, and the input end of the booster pump 223 is connected with the jet outlet 214 through a pipeline. In this embodiment, the activated sludge in the sequencing batch reactor 121 is transferred to the contact reactor 21 through the second sludge recycling inlet 211 for ozone oxidation treatment, and the treated activated sludge is returned to the sequencing batch reactor 121 through the second sludge recycling outlet 213; meanwhile, the ozone generated by the ozone generator 31 is conveyed to the ejector 221 through a pipeline, and the ozone and the sewage mixed liquor pressurized by the booster pump 223 are fully contacted and mixed in the ejector 221, so that the ozone is fully dissolved in the mixed liquor, and the mixed liquor which is dissolved and carries ozone bubbles enters the contact reactor 21 from the jet inlet 213 through the ejector 221 to treat the sludge; in addition, the liquid flow meter 222 can monitor the flow rate of the mixed liquid in the pipeline in real time and feed back the flow rate data to the operator, and the operator adjusts the power of the booster pump 223 according to the flow rate data of the mixed liquid in the pipeline.
In conclusion, the sludge reduction system based on the ozone bypass treatment of the utility model performs pressurization mixing on the ozone and the mixed liquid in the contact reactor through the gas-liquid jet device, so that the ozone is fully dissolved in the mixed liquid and is conveyed to the contact reactor through the jet device to perform ozone oxidation treatment on the activated sludge, thereby greatly improving the ozone oxidation efficiency of the activated sludge and achieving the purpose of sludge reduction in the sewage treatment process. The sewage to be treated is treated by adopting an activated sludge method in the sequencing batch reactor, and the activated sludge is subjected to ozone oxidation by the contact reactor through the circulating pump and then flows back to the sequencing batch reactor for recycling, so that the ozone bypass treatment of the activated sludge is realized, and the in-situ reduction of the sludge is further realized.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A sludge decrement system based on ozone bypass treatment is characterized by comprising: the system comprises a sequencing batch processing unit, a contact reaction unit and an ozone generating unit, wherein the sequencing batch processing unit is connected with a contact reaction unit pipeline, and the contact reaction unit is connected with the ozone generating unit pipeline;
the sequencing batch processing unit comprises a sewage input pipeline, a sequencing batch reactor, a microcomputer time control switch and a sewage output pipeline, wherein the sewage input pipeline is connected with the input end of the sequencing batch reactor, the output end of the sequencing batch reactor is connected with the sewage output pipeline, and the microcomputer time control switch is electrically connected with the sequencing batch reactor;
the contact reaction unit comprises a contact reactor, a gas-liquid jet device and a tail gas absorption device, wherein the input end of the contact reactor and the output end of the contact reactor are respectively connected with the pipeline of the sequencing batch reactor, the input end of the gas-liquid jet device and the output end of the gas-liquid jet device are respectively connected with the pipeline of the contact reactor, and the input end of the tail gas absorption device is connected with the top of the contact reactor.
2. The ozone bypass treatment based sludge reduction system of claim 1, wherein the ozone generating unit comprises an ozone generator, an ozone concentration meter and a gas flow meter, and the ozone generator, the ozone concentration meter, the gas flow meter and the gas-liquid jet device are sequentially connected by a pipeline.
3. The ozone bypass treatment based sludge reduction system according to claim 2, wherein the ozone generator comprises a gas detection end and a gas output end, the gas detection end, the ozone concentration meter and the input end of the gas flow meter are sequentially connected through a pipeline, and the output end of the gas flow meter and the gas output end are connected into the gas-liquid jet device in parallel through a pipeline.
4. The ozone bypass treatment based sludge abatement system of claim 1, wherein the sequencing batch reactor comprises a sequencing batch reactor, a stirring device, an aeration pump, an aerator, a first sludge circulation outlet, a first sludge circulation inlet, and a sludge circulation pump; the stirring device and the aerator are respectively and correspondingly arranged inside the sequencing batch reactor, the sewage input pipeline and the sewage output pipeline are respectively and correspondingly connected with the sequencing batch reactor, the output end of the aeration pump is connected with the input end pipeline of the aerator, the first sludge circulation outlet and the first sludge circulation inlet are respectively and correspondingly arranged on the kettle wall of the sequencing batch reactor, and the input end pipeline of the sludge circulation pump is connected with the first sludge circulation outlet.
5. The ozone bypass treatment based sludge reduction system as claimed in claim 4, wherein the microcomputer time control switch is electrically connected to the stirring device, the aeration pump and the sludge circulation pump respectively.
6. The ozone bypass treatment based sludge abatement system of claim 5, wherein the contact reactor is provided with a second sludge circulation inlet, a second sludge circulation outlet, a jet inlet, a jet outlet and a tail gas outlet, wherein the second sludge circulation inlet and the jet inlet are respectively arranged on the side wall of the contact reactor, the second sludge circulation outlet and the jet outlet are respectively arranged on the bottom wall of the contact reactor, and the tail gas outlet is arranged on the top wall of the contact reactor; and the second sludge circulation inlet is connected with an output end pipeline of the sludge circulation pump, the second sludge circulation outlet is connected with the first sludge circulation inlet pipeline, and the tail gas outlet is connected with the tail gas absorption device pipeline.
7. The ozone bypass treatment based sludge reduction system as claimed in claim 6, wherein the gas-liquid jet device comprises a jet device, a liquid flow meter and a booster pump, one end of the jet device is connected with the jet inlet pipeline, the other end of the jet device is connected with one end of the liquid flow meter through a pipeline, an output end of the booster pump is connected with the other end of the liquid flow meter through a pipeline, and an input end of the booster pump is connected with the jet outlet pipeline.
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| CN202121172675.6U CN215667662U (en) | 2021-05-28 | 2021-05-28 | Sludge reduction system based on ozone bypass treatment |
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| CN202121172675.6U CN215667662U (en) | 2021-05-28 | 2021-05-28 | Sludge reduction system based on ozone bypass treatment |
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