CN106115886B - Sewage filters charge device - Google Patents
Sewage filters charge device Download PDFInfo
- Publication number
- CN106115886B CN106115886B CN201610773953.0A CN201610773953A CN106115886B CN 106115886 B CN106115886 B CN 106115886B CN 201610773953 A CN201610773953 A CN 201610773953A CN 106115886 B CN106115886 B CN 106115886B
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- medicament
- medicine
- sludge
- stirring shaft
- mixing stirrer
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- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 239000003814 drug Substances 0.000 claims abstract description 62
- 238000003756 stirring Methods 0.000 claims abstract description 40
- 239000010802 sludge Substances 0.000 claims abstract description 39
- 238000002156 mixing Methods 0.000 claims abstract description 32
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 24
- 239000000126 substance Substances 0.000 abstract description 17
- 239000007787 solid Substances 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 5
- 231100000331 toxic Toxicity 0.000 abstract description 5
- 230000002588 toxic effect Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229940079593 drug Drugs 0.000 description 5
- 239000008394 flocculating agent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010016807 Fluid retention Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5209—Regulation methods for flocculation or precipitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
- B01F27/1921—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements comprising helical elements and paddles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7179—Feed mechanisms characterised by the means for feeding the components to the mixer using sprayers, nozzles or jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/305—Treatment of water, waste water or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to environment-friendly machinery, and particularly relates to sewage treatment equipment, in particular to a sewage filtering and dosing device which comprises a medicine mud mixing stirrer, wherein a stirring shaft is arranged in the medicine mud mixing stirrer, a sludge pump is connected to the inlet of the medicine mud mixing stirrer, the outlet of the medicine mud mixing stirrer is connected to sludge dewatering equipment, a medicine injection inlet and a medicine outlet are arranged on the stirring shaft, and the medicine injection inlet is connected with a medicine feeder and a high-pressure injection system. According to the invention, the medicament is sprayed into the medicament-mud mixing stirrer by adopting the medicament high-pressure spraying system, the medicament can be fully mixed into the sludge by stirring the stirring shaft, the adsorption of water on the particle surface in the sludge and the conversion of bound water in capillary channels into free water and external water are facilitated to be enhanced, toxic and harmful substances in the sewage are fixed in a net chain formed by solidification, the solid is converted into solid similar to soil or with higher bonding strength, and the water content of the dewatered sludge can be reduced by more than ten percent.
Description
Technical Field
The invention belongs to environment-friendly machinery, and particularly relates to sewage treatment equipment, in particular to a sewage filtering and dosing device.
Background
With the economic development and modernization progress of the country, various types of environmental pollution also increasingly affect our lives, and especially water pollution is the first threat. In order to treat the pollution of sewage to the environment, the sewage is concentrated into a sewage treatment plant for comprehensive treatment so as to reach the discharge standard regulated by the state. The invention relates to a sewage filtering and dosing system, which is the last link in a sewage treatment project, namely, drug dilution, drug mud mixing, physicochemical reaction, mechanical stirring and conveying and the like, and then the sewage enters a squeezing and dewatering process. The prior art is that traditional flocculating agent is stirred, diluted and cured through a groove body, and then is mixed with sludge and conveyed to a dewatering device, a dosing system in the prior art is designed for adapting to the drug characteristics of traditional flocculating agents, and the most troublesome problem in the prior art is that the sludge after sewage treatment is difficult to degrade and can not be restored into harmless usable substances after being put back to the nature for a long time, so that local secondary pollution is formed to ecology, and especially, a great number of factors such as water retention of sewage sludge can not be well solved in the process of drug sludge dialysis reaction in the prior art, so that when conventional filter pressing equipment is adopted for desliming, the water content and the characteristics of the dry sludge after being squeezed and dewatered are still difficult to achieve ideal effects.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing drug sludge dialysis reaction process can not well solve a plurality of factors such as water binding capacity of sewage particle sludge, the water content and the dry sludge characteristic of the dry sludge after squeezing and dehydration still can not achieve ideal effects, and the sewage filtering and dosing device is provided for solving the problems.
The object of the invention is achieved in the following way:
sewage filters charge device, including medicine mud mixing stirrer, be provided with the (mixing) shaft in the medicine mud mixing stirrer, be connected with the sludge pump at medicine mud mixing stirrer entrance, medicine mud mixing stirrer's exit linkage to sludge dewatering equipment is provided with medicament injection entry and medicament export on the (mixing) shaft, and medicament injection entry is connected with medicament feeder and high-pressure injection system.
The medicament feeder comprises a hopper, a bin and a feeder which are connected in sequence, a high-pressure injection system is communicated with the feeder, and the feeder is provided with an interface connected with a medicament injection inlet.
The high-pressure injection system is an air compressor.
A butterfly valve is arranged between the hopper and the storage bin.
The feeding device comprises a cylinder connected with a bin, a cylinder base is arranged at the lower end of the cylinder, a rotating shaft is arranged at the center of the cylinder and hinged with the cylinder base, a stirrer is arranged on the rotating shaft, a feeding port is arranged on the cylinder base, and a rotary feeding device communicated with a high-pressure injection system is arranged at the lower end of the cylinder base.
The rotary feeding device comprises a rotary feeding disc which is arranged on the lower side of a cylinder base and rotates along with a rotating shaft, the rotary feeding disc is sealed by a sealing plate, feeding holes corresponding to feeding ports are uniformly distributed in the rotary feeding disc, air inlet holes corresponding to the feeding holes are formed in the cylinder base, air outlet holes are correspondingly formed in the sealing plate, and an interface connected with a medicament injection inlet is formed in the air outlet holes.
The medicine mud mixing stirrer comprises a cylindrical barrel, a stirring shaft is arranged in the center of the barrel, and the stirring shaft is connected with a high-pressure medicament injection system through a hollow rod driven by a motor.
The stirring shaft is of a hollow structure, spiral pushing ends are arranged at two ends of the stirring shaft, and stirring rods and medicament outlets are uniformly distributed between the spiral pushing ends at the two ends.
The spiral pushing end is a spiral blade.
The stirring rods are arranged on the stirring shaft in a staggered spiral mode.
Compared with the prior art, the invention adopts the high-pressure injection system of the medicament to inject the medicament into the medicament-mud mixing stirrer, can fully mix the medicament into the sludge by stirring the stirring shaft, is beneficial to strengthening the adsorption of water on the particle surface in the sludge and the transformation of bound water in capillary channels into free water and external water, and fixes toxic and harmful substances in the sewage in a network chain formed by solidification so as to transform the toxic and harmful substances into solid similar to soil or solid with higher bonding strength, thereby reducing the water holding capacity of the sludge and the like, providing sufficient conditions for the acceleration of a desliming process of subsequent equipment, and reducing the water content of the dewatered sludge by more than ten percent.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of a medicament feeder.
Wherein 1 is a rotating shaft; 2 is a frame; 3 is a trachea locking movable joint; 4 is a storage bin; 5 is a butterfly valve; 6 is a hopper; 7 is a stirrer; 8 is a rotary batch pan; 9 is a sludge feed inlet; 10 is a sludge pump; 11 is an air compressor; 14 is a medicine mud mixing stirrer; 15 is a hollow rod; 16 is a stirring shaft; 17 is a stir bar; 18 is a medicament outlet; 19 is a helical blade; 20 is a sludge outlet.
Detailed Description
As shown in fig. 1-2, the sewage filtering and chemical adding device comprises a chemical mud mixing stirrer, a stirring shaft 16 is arranged in the chemical mud mixing stirrer, a sludge pump 10 is connected to an inlet of the chemical mud mixing stirrer, an outlet of the chemical mud mixing stirrer is connected to a sludge dewatering device, a chemical injection inlet and a chemical outlet 18 are arranged on the stirring shaft 16, and the chemical injection inlet is connected with a chemical feeder and a high-pressure injection system.
As shown in fig. 2, the medicament feeder comprises a hopper 6, a bin 4 and a feeder which are connected in sequence, the high-pressure injection system is communicated with the feeder, and the feeder is provided with an interface connected with a medicament injection inlet.
The high pressure injection system is an air compressor 11.
A butterfly valve 5 is arranged between the hopper 6 and the storage bin 4.
The feeder comprises a cylinder connected with a bin, a cylinder base is arranged at the lower end of the cylinder, a rotating shaft is arranged at the center of the cylinder and hinged with the cylinder base, a stirrer 7 is arranged on the rotating shaft, a feeding port is arranged on the cylinder base and is a conical round hole with the upper part larger than the lower part, and a rotary feeding device communicated with a high-pressure injection system is arranged at the lower end of the cylinder base.
The rotary feeding device comprises a rotary feeding disc 8 which is arranged at the lower side of a cylinder base and rotates along with a rotating shaft, the rotary feeding disc 8 is sealed by a sealing plate, feeding holes corresponding to feeding ports are uniformly distributed in the rotary feeding disc 8, air inlet holes corresponding to the feeding holes are formed in the cylinder base, an air pipe locking movable joint 3 is arranged on the air inlet holes, air outlet holes are correspondingly formed in the sealing plate, and an interface connected with a medicament injection inlet is formed in the air outlet holes.
The medicine mud mixing stirrer comprises a cylindrical barrel, a stirring shaft 16 is arranged in the center of the barrel, and the stirring shaft 16 is connected with a medicament high-pressure injection system through a hollow rod 15 driven by a motor.
The stirring shaft 16 is of a hollow structure, spiral pushing ends are arranged at two ends of the stirring shaft 16, and stirring rods 17 and agent outlets 18 are uniformly distributed between the spiral pushing ends at the two ends. The spiral pushing end is a spiral blade 19. The stirring rods 17 are arranged on the stirring shaft 16 in a staggered spiral manner, so that sewage and the medicament can be fully mixed during stirring.
The sewage filtering, squeezing and treating chemical adding system aims to solve the problems that in the prior art, sludge cannot be effectively degraded after sewage filtering, so that secondary pollution occurs and the sewage cannot be quickly and smoothly dehydrated in the squeezing process. In order to achieve the purpose, the company adopts a novel IST inorganic flocculating agent, and the novel agent needs special mechanism requirements such as high-pressure wind pumping of dry powder of the agent, cutting off and stirring of mixing and mixing of medicine mud and water, sedimentation and separation of mud and water in the process of adding the agent into sewage.
The purpose of the invention is realized by the following technical scheme: it mainly comprises a medicine powder feeding and supplying device and a cylindrical medicine liquid and muddy water mixing and stirring device. The feeding and supplying device comprises a feeding disc 8 of a stock bin 4 and a high-pressure pneumatic system, wherein in order to convey the medicinal powder outwards uniformly, smoothly and in equal proportion, mechanisms such as a stirrer 7, a rotary feeding disc 8, a dry powder pneumatic guide ring and the like are arranged in the stock bin 4; the medicine mud mixing stirrer consists of a cylindrical cavity, helical blades 19 arranged on a stirring shaft 16, stirring rods 17 arranged in a staggered and helical mode and the like. The working process is as follows: after the medicine powder is sucked into a storage bin 4 by a microcomputer full-automatic suction machine, the powder accumulated at the bottom of a hopper is stirred into a rotary feeding disc 8 by a stirrer 7, the rotary feeding disc 8 rotates, so that the powder medicine falling into the pore cavity of the rotary feeding disc 8 sequentially passes through a high-pressure air hole channel, the medicine powder is blown out by high-pressure airflow of an air compressor, and finally the medicine powder is conveyed into a barrel body through a hose connected with a medicine mud mixing stirrer. When the medicinal powder enters the cylinder body along with the airflow at a high speed in a mist shape, the medicinal powder impacts the sewage input from the other inlet of the cylinder body immediately, impact turbulence is formed to promote the medicinal powder to be in contact with particles in the sewage, then muddy water is stirred in the cylinder body in a cross mode by the stirring rod 17 and is pushed in a spiral mode by the spiral blade 19 in a spiral extruding mode, in the process, liquid forms high-pressure high-speed surging, so that the flocculation settling agent with novel characteristics can fully exert the flocculation settling effect, meanwhile, under the action of a self-adaptive flocculating agent, the mechanism is more beneficial to strengthening the absorption of water on the surfaces of the particles in the sludge and the transformation of bound water in capillary channels into free water and external water, toxic and harmful substances in the sewage are fixed in a net chain formed by solidification, so that the toxic and harmful substances are transformed into solids similar to soil or solids with higher cross bonding strength, the water holding capacity of the sludge is reduced, and sufficient conditions are provided for the acceleration of a desliming process of subsequent equipment, the water content of the dewatered sludge can be reduced by more than ten percent. The sludge dewatering treatment method has the advantages that the degradation performance of substances is improved after the sludge is dewatered, pathogens such as ascarid eggs and faecal coliform bacteria and heavy metals in the treated sludge can be effectively removed, and harmless, quantitative reduction and recycling treatment of the sludge are fully realized.
The other end of the medicine mud mixing stirrer is provided with a mud outlet 20, and the mud outlet 20 can be connected with a mud removing device through a mud conveying pipeline to complete the whole mud removing process.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.
Claims (6)
1. Sewage filters charge device, its characterized in that: the sludge mixing and stirring device comprises a medicine-sludge mixing stirrer, wherein a stirring shaft is arranged in the medicine-sludge mixing stirrer, a sludge pump is connected at the inlet of the medicine-sludge mixing stirrer, the outlet of the medicine-sludge mixing stirrer is connected to sludge dewatering equipment, a medicament injection inlet and a medicament outlet are arranged on the stirring shaft, and the medicament injection inlet is connected with a medicament feeder and a high-pressure injection system;
the medicament feeder comprises a hopper, a bin and a feeder which are connected in sequence, a high-pressure injection system is communicated with the feeder, and the feeder is provided with an interface connected with a medicament injection inlet;
the feeding device comprises a cylinder connected with the bin, a cylinder base is arranged at the lower end of the cylinder, a rotating shaft is arranged at the center of the cylinder and hinged with the cylinder base, a stirrer is arranged on the rotating shaft, a feeding port is arranged on the cylinder base, and a rotary feeding device communicated with a high-pressure injection system is arranged at the lower end of the cylinder base;
the rotary feeding device comprises a rotary feeding disc which is arranged at the lower side of a cylinder base and rotates along with a rotating shaft, the rotary feeding disc is sealed by a sealing plate, feeding holes corresponding to feeding ports are uniformly distributed on the rotary feeding disc, air inlet holes corresponding to the feeding holes are formed in the cylinder base, air outlet holes are correspondingly formed in the sealing plate, and interfaces connected with medicament injection inlet holes are formed in the air outlet holes;
the high-pressure injection system is an air compressor.
2. The sewage filtering and dosing device according to claim 1, characterized in that: a butterfly valve is arranged between the hopper and the storage bin.
3. The sewage filtering and dosing device according to claim 1, wherein: the medicine mud mixing stirrer comprises a cylindrical barrel, a stirring shaft is arranged in the center of the barrel, and the stirring shaft is connected with a high-pressure medicament injection system through a hollow rod driven by a motor.
4. The sewage filtering and dosing device according to claim 3, characterized in that: the stirring shaft is of a hollow structure, spiral pushing ends are arranged at two ends of the stirring shaft, and stirring rods and medicament outlets are uniformly distributed between the spiral pushing ends at the two ends.
5. The sewage filtering and dosing device according to claim 4, wherein: the spiral pushing end is a spiral blade.
6. The sewage filtering and dosing device according to claim 4, wherein: the stirring rods are arranged on the stirring shaft in a staggered spiral mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773953.0A CN106115886B (en) | 2016-08-31 | 2016-08-31 | Sewage filters charge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773953.0A CN106115886B (en) | 2016-08-31 | 2016-08-31 | Sewage filters charge device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106115886A CN106115886A (en) | 2016-11-16 |
| CN106115886B true CN106115886B (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610773953.0A Active CN106115886B (en) | 2016-08-31 | 2016-08-31 | Sewage filters charge device |
Country Status (1)
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| CN (1) | CN106115886B (en) |
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| CN108996639B (en) * | 2018-08-14 | 2021-09-21 | 孙斌 | Coal chemical wastewater treatment system |
| CN108996753B (en) * | 2018-08-14 | 2021-06-01 | 中汇金源（北京）科技发展有限公司 | Coal chemical industry wastewater purification treatment method |
| CN109607991A (en) * | 2019-01-24 | 2019-04-12 | 厦门曙光伟业环保工程有限公司 | A kind of channel cleanout pre-processing device |
| CN111153480B (en) * | 2020-04-08 | 2020-07-24 | 鲁东大学 | Chemical wastewater treatment device |
| CN117142744A (en) * | 2023-10-08 | 2023-12-01 | 江西省进贤润泉供水有限公司 | Continuous sludge treatment dehydration equipment and method |
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-
2016
- 2016-08-31 CN CN201610773953.0A patent/CN106115886B/en active Active
Patent Citations (10)
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|---|---|---|---|---|
| JP2001104997A (en) * | 1999-10-13 | 2001-04-17 | Atorasukoa:Kk | Sludge treatment apparatus |
| JP2005007250A (en) * | 2003-06-17 | 2005-01-13 | Fumiyoshi Yoshioka | Sludge treatment apparatus and sludge treatment method |
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| CN106115886A (en) | 2016-11-16 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Yiming Inventor before: Yang Yunxin Inventor before: Yang Yiming Inventor before: Li Lijin Inventor before: Xie Dejin Inventor before: Li Guoan Inventor before: Pan Xijian Inventor before: Zhang Wei |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Sewage filtration and dosing device Effective date of registration: 20230615 Granted publication date: 20220517 Pledgee: Bank of China Limited Xinyang branch Pledgor: KAIYUAN ENVIRONMENTAL PROTECTION (GROUP) CO.,LTD. Registration number: Y2023980044295 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220517 Pledgee: Bank of China Limited Xinyang branch Pledgor: KAIYUAN ENVIRONMENTAL PROTECTION (GROUP) CO.,LTD. Registration number: Y2023980044295 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Sewage filtration and dosing device Granted publication date: 20220517 Pledgee: Bank of China Limited Shangcheng sub branch Pledgor: KAIYUAN ENVIRONMENTAL PROTECTION (GROUP) CO.,LTD. Registration number: Y2024980019852 |