CN202152290U - Pressurized dissolved-air floating system - Google Patents
Pressurized dissolved-air floating system Download PDFInfo
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- CN202152290U CN202152290U CN2011202417069U CN201120241706U CN202152290U CN 202152290 U CN202152290 U CN 202152290U CN 2011202417069 U CN2011202417069 U CN 2011202417069U CN 201120241706 U CN201120241706 U CN 201120241706U CN 202152290 U CN202152290 U CN 202152290U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 239000010865 sewage Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 238000005188 flotation Methods 0.000 claims description 36
- 239000003814 drug Substances 0.000 claims description 29
- 239000002893 slag Substances 0.000 claims description 20
- 238000009300 dissolved air flotation Methods 0.000 claims description 15
- 238000007790 scraping Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000013505 freshwater Substances 0.000 abstract 5
- 238000000034 method Methods 0.000 description 12
- 238000005202 decontamination Methods 0.000 description 8
- 230000003588 decontaminative effect Effects 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 4
- 238000006124 Pilkington process Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
A pressurized dissolved-air floating system is characterized by comprising a pressure dissolved-air device, a dissolved-air releasing device and an air floating separating device, wherein the pressure dissolved-air device comprises a dissolved-air water tank, a clean water tank, an air and liquid input pipe and an air-dissolved delivery pipe; the dissolved-air water tank is connected with the clean water tank through the air and liquid input pipe; one end of the air-dissolved delivery pipe is connected with the dissolved-air water tank; the air floating separating device comprises an air floating groove, a sewage inlet pipe, a fresh water discharge pipe, a fresh water return conduit, a water collecting pipe and a scum drainage pipe; the air floating groove comprises a contact chamber, a separation chamber, a scum collection chamber and a fresh water chamber; the sewage inlet pipe is led to the contact chamber; one end of the fresh water return conduit is arranged outside the air floating groove; the other end of the fresh water return conduit is connected to the clean water tank; the scum drain pipe is arranged at the bottom of the scum collecting chamber; a dissolved-air releaser is arranged in the contact chamber of the air floating groove and close to the bottom of the contact chamber; and the other end of the air-dissolved delivery pipe penetrates out of the air floating tank and then is connected with the dissolved-air releaser.
Description
Technical Field
The utility model relates to a solid-liquid separation mode in the water treatment field, in particular to a pressurized dissolved air flotation system.
Background
The oily wastewater treatment process is various, and generally, the oily wastewater treatment process is mainly divided into a coarse grain fine method, a membrane filtration method, an air floatation method and a biological oxidation method. The principle of the air flotation method, also called flotation, is to make the water generate a large amount of micro-bubbles to form a three-phase mixture of water, air and the removed substance, and promote the micro-bubbles to adhere to the removed micro-oil drops under the combined action of a plurality of forces such as interfacial tension, bubble rising buoyancy and hydrostatic pressure difference, and then the micro-bubbles float to the water surface because the density of the adhesive is less than that of the water, so that the oil particles in the water are separated and removed. In addition to the removal of oil in an emulsified state in sewage, the air-float process is widely used for removing impurities in sewage in a state of fine suspended particles having a density close to that of water. Among them, the pressurized dissolved air float method among the air float methods is most widely used at home and abroad. The pressurized dissolved air floatation method comprises the following steps: dissolving air into water under a pressurized condition, separating out the air under normal pressure, and forming bubbles;
the process of the pressurized air floating method comprises the following steps: the sewage (or clean water) and compressed air are led into a dissolved air tank, and the air is dissolved in water to become dissolved air water and reach a saturated state through pressurization. Then the dissolved air water is introduced into an air floatation tank under reduced pressure, the dissolved air escapes from the water under normal pressure to form fine bubbles which are separated out from the water, and pollutants in the water are adhered to form an air-particle flotation body which floats out of the water surface to form scum, then the scum is scraped by a foam scraping machine, and the system water is purified and then discharged. Therefore, the advantages and disadvantages of the air-flotation water purification system are finally reflected in the improvement of the solid-liquid separation effect; the conventional pressurized air flotation system is not compact enough in structure and high in energy consumption; meanwhile, the operation of the pressurized gas dissolving equipment is not stable enough, the gas dissolving saturation in the pressurized gas dissolving tank is low, and the energy is not saved enough; the air bubbles released by the dissolved air releaser have low decontamination efficiency.
Disclosure of Invention
The utility model aims to provide a pressurized dissolved air flotation system which has compact and reasonable structure; and the gas dissolution saturation of the pressurized gas-dissolving water is high, the energy consumption is low, the decontamination efficiency is high, and the decontamination cost is low.
The above object of the utility model is realized through following technical scheme: a pressurized dissolved air floatation system comprises a pressurized dissolved air device, a dissolved air release device and an air floatation separation device;
the pressure air dissolving device comprises: the system comprises a dissolved water tank, a clear water tank, a gas-liquid input pipe and a dissolved water delivery pipe;
the dissolved gas water tank is connected with the clear water tank through the gas-liquid input pipe; one end of the dissolved water delivery pipe is connected with the dissolved water tank;
the air flotation separation device comprises: the device comprises an air flotation tank, a sewage inlet pipe, a clean water discharge pipe, a clean water return pipe, a water collecting pipe and a slag discharge pipe;
the interior of the air flotation tank is divided into a contact chamber, a separation chamber, a slag collecting chamber and a clear water chamber by partition plates; the sewage inlet pipe is communicated into the contact chamber and is close to the bottom of the contact chamber; one end of the water collecting pipe is arranged in the clean water chamber, and the other end of the water collecting pipe is arranged in the separation chamber; one end of the clear water discharge pipe and one end of the clear water return pipe are both arranged in the clear water chamber, the other end of the clear water discharge pipe is arranged outside the air flotation tank, and the other end of the clear water return pipe is connected to the clear water tank; the slag discharge pipe is arranged at the bottom of the slag collecting chamber;
the dissolved air release device comprises: a dissolved air releaser;
the dissolved air releaser is arranged in the air flotation tank contact chamber and is close to the bottom of the contact chamber; and the other end of the dissolved water delivery pipe penetrates into the air floatation groove and then is connected with the dissolved gas releaser.
The above object of the present invention can be further improved by the following technical solutions:
the pressure air dissolving device further comprises: a pressure pump and a gas self-priming tube; the pressurizing pump is arranged on the gas-liquid input pipe and is close to the dissolved gas water tank; the gas self-priming pipe is also arranged on the gas-liquid input pipe and is close to the clear water tank; and the gas self-sucking pipe is provided with a gas self-sucking amount regulating valve.
The pressure gas dissolving device also comprises a pressure gauge sensor and a discharge valve; the pressure gauge sensor and the discharge valve are arranged on the dissolved water delivery pipe and are close to the dissolved water tank.
And a water level sensor is arranged in the gas dissolving water tank and used for controlling the self-suction regulating valve, so that the water level in the gas dissolving water tank is maintained at a preset level, and gas dissolving water with preset concentration is obtained.
The micro-bubble generator is arranged at the position in the air flotation tank contact chamber and is positioned below the sewage inlet pipe.
The micro-bubble generator is a spherical container; the micro-bubble generator is provided with a jet hole; the micro-bubble generator releases the ultra-micro-bubbles through the jet holes and generates negative pressure at the same time.
The pressurized dissolved air floatation system also comprises a medicine feeding device; the medicine feeding device is positioned outside the air flotation groove; the medicine feeding device comprises a medicine groove and a medicine feeding pipe; one end of the medicine inlet pipe is connected with the medicine groove, and the pipe orifice at the other end of the medicine inlet pipe penetrates through the air floatation groove and is arranged in the air floatation groove contact chamber.
The air floatation separation device also comprises a slag scraper; the scum scraping machine is positioned at the upper part in the air flotation groove and is used for scraping scum floating to the sewage liquid level in the air flotation groove into the scum collecting chamber.
The utility model has the advantages that:
the pressurized dissolved air flotation system of the utility model has compact structure and low energy consumption; the gas dissolution saturation of the pressurized gas dissolution water generated by the gas dissolution water tank is high, the decontamination capability and the decontamination efficiency are improved, and the decontamination cost is reduced.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a pressurized dissolved air flotation system according to the present invention;
FIG. 2 is a process flow diagram of an embodiment of a pressurized dissolved air flotation system according to the present invention;
wherein,
11, a dissolved gas water tank:
111 a water level sensor;
12, a clear water tank; 13 gas-liquid input pipe; 14 a dissolved water delivery pipe; 15 a pressure pump;
16 gas self-priming tube:
161 gas self-suction regulating valve;
17 a pressure gauge sensor; 18 a discharge valve;
21 dissolved air releaser:
211 an injection hole;
31 air flotation tank:
311 contact chamber, 312 separation chamber, 313 slag collection chamber, 314 clear water chamber;
32 sewage inlet pipes; 33 a clear water discharge pipe; 34 a clear water return pipe; 35 a water collection pipe; 36 slag discharge pipes and 37 slag scrapers;
41 a medicine groove; 42 a medicine inlet pipe;
the specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description will be made in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Fig. 1 shows a pressurized dissolved air flotation system in the present embodiment, which includes a pressurized dissolved air device, a dissolved air releasing device and an air flotation separating device; the pressure air dissolving device comprises: a dissolved water tank 11, a clear water tank 12, a gas-liquid input pipe 13 and a dissolved water delivery pipe 14; the dissolved gas water tank 11 is connected with the clear water tank 12 through a gas-liquid input pipe 13; one end of the dissolved water delivery pipe 14 is connected with the dissolved water tank 11;
further, the air flotation separation device comprises: an air flotation tank 31, a sewage inlet pipe 32, a clear water outlet pipe 33, a clear water return pipe 34, a water collecting pipe 35 and a slag discharge pipe 36; the inside of the air flotation tank 31 is divided into a contact chamber 311, a separation chamber 312, a slag collection chamber 313 and a clean water chamber 314 by partition plates; the sewage inlet pipe 32 is communicated into the contact chamber 311 and is close to the bottom of the contact chamber 311; one end of the water collecting pipe 35 is arranged in the clean water chamber 314, and the other end of the water collecting pipe 35 is arranged in the separation chamber 312; one end of the clear water discharge pipe 33 and one end of the clear water return pipe 34 are both arranged in the clear water chamber 314, the other end of the clear water discharge pipe 33 is arranged outside the air flotation tank 31, and the other end of the clear water return pipe 34 is connected to the clear water tank 12; the slag discharge pipe 36 is arranged at the bottom of the slag collecting chamber 313;
further, the dissolved air releasing device comprises: a dissolved air releaser 21; the dissolved air releaser 21 is arranged in the air flotation tank contact chamber 311 and is close to the bottom of the contact chamber 311; the other end of the dissolved water delivery pipe 14 is connected to the dissolved gas releaser 21 after penetrating into the air flotation tank 31.
Preferably, the pressure air dissolving device in this embodiment further includes: a pressure pump 15 and a gas self-priming tube 16; the pressure pump 15 is arranged on the gas-liquid input pipe 13 and is close to the dissolved water tank 11; the gas self-sucking pipe 16 is also arranged on the gas-liquid input pipe 13 and is close to the clean water tank 12; the gas self-suction pipe 16 is provided with a gas self-suction amount adjusting valve 161.
Preferably, the pressure air dissolving device in the embodiment further comprises a pressure gauge sensor 17 and a discharge valve 18; the pressure gauge sensor 17 and the discharge valve 18 are both provided on the dissolved water delivery pipe 14 and are close to the dissolved water tank 11.
Preferably, the water level sensor 111 is provided inside the gas-dissolved water tank 11 in this embodiment, and is used to control the self-suction amount adjusting valve 161, so as to maintain the water level in the gas-dissolved water tank 11 at a preset level and obtain gas-dissolved water with a preset concentration.
Further, the pressurizing pump 15 is operated to suck water from the clean water tank 12, the gas self-suction pipe 16 is at a negative pressure, and the gas self-suction amount adjusting valve 161 self-sucks gas, so that gas-liquid mixed pressure liquid can be fed into the gas-liquid input pipe 13; the pressure in the gas dissolving water tank 11 is detected by a pressure gauge sensor 17, and meanwhile, the pressure in the gas dissolving water tank 11 can be adjusted to a preset value by adjusting by a discharge valve 18; the water level sensor 111 controls the self-suction amount adjustment valve 161 to maintain the water level in the dissolved gas tank 11 at a predetermined level, thereby obtaining gas-dissolved water having a predetermined concentration.
Preferably, the micro-bubble generator 21 in this embodiment is a spherical container; the micro-bubble generator 21 is provided with a jet hole 211; the microbubble generator 21 generates negative pressure while discharging ultrafine bubbles through the ejection holes 211.
Preferably, the present embodiment further comprises a medicine feeding device; the medicine feeding device is positioned outside the air floatation groove 31; the medicine feeding device comprises a medicine groove 41 and a medicine feeding pipe 42, one end of the medicine feeding pipe 42 is connected with the medicine groove 41, and the other end pipe orifice of the medicine feeding pipe 42 penetrates through the air floatation groove 31 and enters the air floatation groove contact chamber 311.
Furthermore, chemical agents such as flocculating agents are combined with the suspension in the sewage, so that the suspension in the sewage is more easily combined with the bubbles generated by the dissolved air releasing device; the medicine feeding device in the embodiment can simultaneously combine the small bubbles, the medicine and the suspension body in the sewage together, so that the combination of the small bubbles and the suspension body is more reliable, and the using amount of the medicine is smaller.
Preferably, in this embodiment, the air flotation separation device further includes a slag scraper 37; the scum scraper 37 is positioned at the top of the air flotation tank 31 and is used for scraping scum floating on the sewage level in the air flotation tank 31 into the scum collecting chamber 314.
Furthermore, as shown in fig. 2, the process flow of the pressurized dissolved air flotation system of the present invention is as follows:
the sewage enters the air flotation tank contact chamber 311, so that suspension in the sewage is combined with micro bubbles released by the micro bubble dissolved air releaser 21 and the medicament discharged by the medicament inlet pipe 42 to form a flocculent air particle combination, the air particle combination flows into the separation chamber 312 along with the sewage, and the air particle combination floats to the water surface of the sewage under the buoyancy of the bubbles to form scum, so that the sewage is purified; the scum scraping mechanism scrapes the scum into the scum collecting chamber 314; the purified clean water below the scum enters the clean water chamber 313 through the water collecting pipe 35 at the lower part of the separation chamber 312; and one part of clear water in the clear water chamber 313 is discharged, the other part of clear water enters the clear water tank 12 through the clear water return pipe 34, the clear water in the clear water tank 12 enters the dissolved gas water tank 11 through the gas-liquid input pipe 13 to form dissolved gas water with high saturation, the dissolved gas water enters the micro-bubble dissolved gas releaser 21 through the dissolved gas water leading-out pipe 14, the micro-bubble dissolved gas releaser 21 releases the dissolved gas water into the contact chamber 311, and the micro-bubbles are generated and used for being combined with suspension in the sewage.
The utility model discloses a pressurization dissolves gas air supporting system, compact structure, and the produced gas saturation that dissolves gas water of solution water pitcher is high, makes the power consumption reduce, the micro-bubble dissolve gas releaser with the sewage pipe reaches the effective combination of advancing the pencil has improved dirt-removing power and decontamination efficiency, and simultaneously, the decontamination effect improves.
Finally, it should be noted that it is obvious that various modifications can be made to the present invention by those skilled in the art without departing from the spirit and scope of the present invention; if such modifications of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications.
Claims (8)
1. A pressurized dissolved air floatation system is characterized in that: comprises a pressure dissolved air device, a dissolved air releasing device and an air flotation separating device;
the pressure air dissolving device comprises: a dissolved water tank (11), a clear water tank (12), a gas-liquid input pipe (13) and a dissolved water delivery pipe (14);
the gas dissolving water tank (11) is connected with the clear water tank (12) through the gas-liquid input pipe (13); one end of the dissolved water delivery pipe (14) is connected with the dissolved water tank (11);
the air flotation separation device comprises: an air flotation tank (31), a sewage inlet pipe (32), a clear water outlet pipe (33), a clear water return pipe (34), a water collecting pipe (35) and a slag discharge pipe (36);
the interior of the air flotation tank (31) is divided into a contact chamber (311), a separation chamber (312), a slag collecting chamber (313) and a clear water chamber (314) by a partition plate; the sewage inlet pipe (32) is communicated into the contact chamber (311) and is close to the bottom of the contact chamber (311); one end of the water collecting pipe (35) is arranged in the clean water chamber (314), and the other end of the water collecting pipe (35) is arranged in the separation chamber (312); one end of the clear water discharge pipe (33) and one end of the clear water return pipe (34) are both arranged in the clear water chamber (314), the other end of the clear water discharge pipe (33) is arranged outside the air flotation tank (31), and the other end of the clear water return pipe (34) is connected to the clear water tank (12); the slag discharge pipe (36) is arranged at the bottom of the slag collecting chamber (313);
the dissolved air release device comprises: a dissolved air releaser (21);
the dissolved air releaser (21) is arranged in the air flotation tank contact chamber (311) and is close to the bottom of the contact chamber (311); the other end of the dissolved water delivery pipe (14) penetrates into the air flotation groove (31) and then is connected with the dissolved air releaser (21).
2. The pressurized dissolved air flotation system according to claim 1, wherein:
the pressure air dissolving device further comprises: a pressure pump (15) and a gas self-priming pipe (16); the pressure pump (15) is arranged on the gas-liquid input pipe (13) and is close to the dissolved gas water tank (11); the gas self-priming pipe (16) is also arranged on the gas-liquid input pipe (13) and is close to the clean water tank (12); and the gas self-sucking pipe (16) is provided with a gas self-sucking amount regulating valve (161).
3. The pressurized dissolved air flotation system according to claim 2, wherein:
the pressure air dissolving device also comprises a pressure gauge sensor (17) and a discharge valve (18); the pressure gauge sensor (17) and the discharge valve (18) are arranged on the dissolved water delivery pipe (14) and are close to the dissolved water tank (11).
4. The pressurized dissolved air flotation system according to claim 2, wherein:
and a water level sensor (111) is arranged in the dissolved gas water tank (11) and is used for controlling the self-suction regulating valve (161) to maintain the water level in the dissolved gas water tank (11) at a preset level and obtain gas dissolved water with preset concentration.
5. The pressurized dissolved air flotation system according to claim 1, wherein:
the micro-bubble generator (21) is positioned in the air flotation tank contact chamber (311) and is positioned below the sewage inlet pipe (32).
6. The pressurized dissolved air flotation system according to claim 1, wherein:
the micro-bubble generator (21) is a spherical container; the micro-bubble generator (21) is provided with a jet hole (211); the micro-bubble generator (21) releases ultra-micro-bubbles through the injection holes (211) and simultaneously generates negative pressure.
7. The pressurized dissolved air flotation system according to claim 6, wherein:
also comprises a medicine feeding device; the medicine feeding device is positioned outside the air floatation groove (31); the medicine feeding device comprises a medicine groove (41) and a medicine feeding pipe (42); the one end of advancing pencil (42) with medicine groove (41) link to each other, the other end mouth of pipe that advances pencil (42) passes air supporting groove (31), set up in air supporting groove contacts indoor (311).
8. The pressurized dissolved air flotation system according to claim 6, wherein:
the air floatation separation device also comprises a slag scraper (37); the slag scraper (37) is positioned at the upper part in the air flotation tank (31) and is used for scraping scum floating to the sewage liquid level in the air flotation tank (31) into the slag collection chamber (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202417069U CN202152290U (en) | 2011-07-08 | 2011-07-08 | Pressurized dissolved-air floating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202417069U CN202152290U (en) | 2011-07-08 | 2011-07-08 | Pressurized dissolved-air floating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152290U true CN202152290U (en) | 2012-02-29 |
Family
ID=45692793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011202417069U Expired - Lifetime CN202152290U (en) | 2011-07-08 | 2011-07-08 | Pressurized dissolved-air floating system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043853A (en) * | 2012-12-14 | 2013-04-17 | 蓝星环境工程有限公司 | Advanced treatment process and device for sewage |
| CN103043852A (en) * | 2012-12-14 | 2013-04-17 | 蓝星环境工程有限公司 | Wastewater treatment process and device |
| CN104671317A (en) * | 2015-02-13 | 2015-06-03 | 浙江高和羊毛科技有限公司 | Sewage air flotation separation device |
| CN106904680A (en) * | 2017-04-26 | 2017-06-30 | 湖南美奕机电科技有限公司 | A kind of air floatation machine |
| CN107001074A (en) * | 2014-10-02 | 2017-08-01 | 威立雅水务技术支持公司 | The water treatment procedure of suspended solid is removed using dissolved air floatation |
| CN109231589A (en) * | 2018-11-22 | 2019-01-18 | 中建安装工程有限公司 | A kind of self-loopa negative pressure flotation sewage disposal system |
| CN111115739A (en) * | 2020-01-14 | 2020-05-08 | 苏州中鹿环保设备有限公司 | Water inlet flow dividing gas-liquid mixing device of wastewater air floatation system |
-
2011
- 2011-07-08 CN CN2011202417069U patent/CN202152290U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043853A (en) * | 2012-12-14 | 2013-04-17 | 蓝星环境工程有限公司 | Advanced treatment process and device for sewage |
| CN103043852A (en) * | 2012-12-14 | 2013-04-17 | 蓝星环境工程有限公司 | Wastewater treatment process and device |
| CN103043852B (en) * | 2012-12-14 | 2014-11-26 | 蓝星环境工程有限公司 | Wastewater treatment process and device |
| CN107001074A (en) * | 2014-10-02 | 2017-08-01 | 威立雅水务技术支持公司 | The water treatment procedure of suspended solid is removed using dissolved air floatation |
| US10752520B2 (en) | 2014-10-02 | 2020-08-25 | Veolia Water Solutions & Technologies Support | Water treatment process employing dissolved air flotation to remove suspended solids |
| CN104671317A (en) * | 2015-02-13 | 2015-06-03 | 浙江高和羊毛科技有限公司 | Sewage air flotation separation device |
| CN106904680A (en) * | 2017-04-26 | 2017-06-30 | 湖南美奕机电科技有限公司 | A kind of air floatation machine |
| CN106904680B (en) * | 2017-04-26 | 2020-06-16 | 嵇旭辉 | Air floatation machine |
| CN109231589A (en) * | 2018-11-22 | 2019-01-18 | 中建安装工程有限公司 | A kind of self-loopa negative pressure flotation sewage disposal system |
| CN109231589B (en) * | 2018-11-22 | 2024-07-23 | 中建安装集团有限公司 | Self-circulation negative pressure flotation sewage treatment system |
| CN111115739A (en) * | 2020-01-14 | 2020-05-08 | 苏州中鹿环保设备有限公司 | Water inlet flow dividing gas-liquid mixing device of wastewater air floatation system |
| CN111115739B (en) * | 2020-01-14 | 2024-04-16 | 苏州中鹿环保设备有限公司 | Water inlet and water diversion gas-liquid mixing device of wastewater floatation system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190125 Address after: No. 5 Xingye Street, Beijing Economic and Technological Development Zone, 100176 Patentee after: Bluestar (Beijing) Chemical Machinery Co., Ltd. Address before: 100080 No. 62, West North Fourth Ring Road, Haidian District, Beijing Patentee before: Blue Star Environmental Engineering Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120229 |
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| CX01 | Expiry of patent term |