CN210710835U - Air floatation equipment for treating coking wastewater - Google Patents
Air floatation equipment for treating coking wastewater Download PDFInfo
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- CN210710835U CN210710835U CN201920504062.4U CN201920504062U CN210710835U CN 210710835 U CN210710835 U CN 210710835U CN 201920504062 U CN201920504062 U CN 201920504062U CN 210710835 U CN210710835 U CN 210710835U
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- coking wastewater
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Abstract
The utility model relates to an air supporting equipment of administering coking wastewater belongs to sewage treatment device technical field. The utility model discloses administer the air supporting equipment of coking wastewater mainly by air supporting cell body, dissolved air releaser, vane type impeller, rotary device, recoil air branch pipe etc. and constitute, dissolved air releaser mainly is used for providing the required microbubble of air supporting equipment, and the impeller of dissolved air releaser top produces the negative pressure and gets into inside the impeller in the high-speed rotatory process under water, and is cut apart by high-speed rivers in the hypergravity centrifugal force field inside the impeller, makes the little bubble further break and evenly disperse in the water; the micro-bubbles with high dispersion are used as carriers to capture and adsorb fine oil droplets and suspended matters in water and carry the fine oil droplets and suspended matters to the water surface to form scum, so that the purposes of separating pollutants and purifying water quality are achieved.
Description
Technical Field
The utility model relates to an air supporting equipment of administering coking wastewater belongs to sewage treatment device technical field.
Background
Along with the aggravation of water pollution, water resources are less and less, people need to treat and recycle waste water in order to obtain more water resources, water pollution treatment equipment mainly comprises a centrifuge, an aerator, a sludge dehydrator, air floatation equipment and the like, wherein the air floatation equipment is a water treatment equipment which is characterized in that an air dissolving system generates a large amount of micro bubbles in water, air is attached to suspended particles in a highly dispersed micro bubble form to cause a state that the density is lower than that of the water, the air floatation equipment floats on the water surface by utilizing the buoyancy principle to realize solid-liquid separation, the air floatation equipment is divided into super-efficient shallow air floatation equipment, cavitation air floatation equipment and laminar flow air floatation equipment, the water treatment equipment is applied to the treatment of water supply, industrial waste water and urban waste water at present, the water quality of pretreatment in the aspect of water supply and drainage is except for some water bodies containing more sand raw water and waste water containing more, most are light suspended particles such as algae in lakes, reservoirs and parts of rivers.
The air supporting equipment theory of operation is through the surface of tiny bubble with the impurity adsorption to the bubble in the waste water, utilizes the buoyancy of bubble with the outside of impurity discharge air supporting case, but present air supporting equipment causes the sediment easily because the bottom that aquatic foreign particle is great can not follow water floats when the air supporting, blocks up the delivery port easily, needs carry out shredding with the impurity of great granule to be convenient for air supporting equipment better processing and use.
The coking wastewater is wastewater generated in the processes of coal-to-coke, coal gas purification and coking product processing and refining, is wastewater containing high-concentration phenol and cyanogen, has complex pollutant composition, high concentration and high toxicity, and is typical industrial wastewater containing organic pollutants difficult to degrade. The waste water mainly comes from four parts of residual ammonia water, crude benzene separation water, final cooling rich residual water and tar separation water. The wastewater amount is large, the water quality components are complex, and the wastewater contains high-concentration substances such as phenol, cyanogen, oil, ammonia nitrogen and the like, and also contains polycyclic or heterocyclic compounds such as quinoline, benzene and derivatives thereof. The color of the formed pollutants is high, the pollutants exist in a true solution or a quasi-alternative form in water, the properties are very stable, and COD and the color are difficult to remove. At present, the wastewater is generally pretreated by adopting an oil separation and air flotation method and then is subjected to biochemical treatment after being concentrated.
The air floating equipment is used as a high-efficiency and quick solid-liquid separation technology, and highly dispersed micro bubbles are used as carriers to adhere suspended matters in water, so that the density of the micro bubbles is smaller than that of the water and the micro bubbles float to the water surface to realize the separation process of the micro bubbles from the liquid. It can be used for separating solid from solid, solid from liquid, liquid from liquid and even ion in solute. The air-floating pretreatment technology is essentially a comprehensive process of gas-solid adsorption and solid-liquid separation. In the process, tiny bubbles and particles of suspended matters in the wastewater are adsorbed to form a water-gas-solid three-phase mixed system, and after the bubbles are adhered to the particles, the density of the particles is smaller than that of the water to generate a floating effect, so that suspended pollutants are separated from the water to form scum, and the scum is removed by a scum scraper.
Aiming at the oil removal of wastewater in the chemical industry, the traditional cavitation air flotation and multiphase dissolved air flotation treatment are generally adopted at present. The diameter of the bubbles generated by the cavitation air floatation equipment is mostly 50-400 mu m, and some bubbles even reach 1 mm. The size of the bubbles with the particle size is greatly different from that of floc particles, so that the adhesion effect is not facilitated, and the air floatation treatment effect is influenced; aiming at the problems that the salt-containing wastewater is easy to cause scaling of a dissolved air pump, blockage of a bubble releaser and the like due to the adoption of multiphase dissolved air floatation treatment because the salt content in the wastewater is high.
Disclosure of Invention
The utility model discloses the main technical problem who solves: adopt heterogeneous dissolved air supporting to handle, very easily cause dissolved air pump scale deposit, bubble releaser to block up the scheduling problem, the utility model provides an administer coking wastewater's air supporting equipment.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts:
an air floatation device for treating coking wastewater comprises a rotating device (4), a dissolved air releaser (5), a blade type impeller (6) and a recoil air pipe (8), wherein the coking wastewater enters an air floatation tank (12) from a water inlet (1), an electromagnetic valve A (2) is opened, an electromagnetic valve B (3) and an electromagnetic valve C (9) are closed, the rotating device (4) is closed, the blade type dissolved air releaser (5) and the blade type impeller are opened, a slag scraping plate (11) scrapes upper-layer pollutants and discharges the pollutants from a slag discharge port (10), and the treated coking wastewater is discharged from a water outlet (7); after dissolved air releaser (5) is blockked up by the pollutant, close solenoid valve A (2), open solenoid valve B (3), solenoid valve C (9) and rotary device (4), the air is through recoil air pipe (8), carries out the spiral to dissolved air releaser (5) and washes, washes the back that finishes, closes solenoid valve B (3), solenoid valve C (9) and rotary device (4), opens solenoid valve A (2) and continues to handle the operation.
The rotating device (4) is connected with the dissolved air releaser (5), and the rotating device (4) is connected under the dissolved air releaser (5).
The slag scraping plate (11) and the air flotation tank are kept horizontal.
The slag scraping plate (11) is a straight knife type scraping plate.
The backflushing air pipe (8) is a pressure hose.
The utility model has the advantages that:
(1) the utility model discloses administer the air supporting equipment of coking wastewater mainly by air supporting cell body, dissolved air releaser, vane type impeller, rotary device, recoil air branch pipe etc. and constitute, dissolved air releaser mainly is used for providing the required microbubble of air supporting equipment, and the impeller of dissolved air releaser top produces the negative pressure and gets into inside the impeller in the high-speed rotatory process under water, and is cut apart by high-speed rivers in the hypergravity centrifugal force field inside the impeller, makes the little bubble further break and evenly disperse in the water; the micro-bubbles with high dispersion are used as carriers to capture and adsorb fine oil droplets and suspended matters in water and carry the fine oil droplets and suspended matters to the water surface to form scum, so that the purposes of separating pollutants and purifying water quality are achieved;
(2) in the utility model, the dissolved air water is released by energy dissipation through the dissolved air releaser, and the excess air is released in the water, so that small bubbles are naturally formed when liquid passes through, the bubbles are very small, and the diameter of the bubbles is about 5-20 microns; connecting the backflushing air branch pipe to the dissolved air releaser, and flushing the blockage completely by adopting spiral flushing through the backflushing air branch pipe when the dissolved air releaser is blocked;
(3) the coking wastewater in the utility model is sent into the gas-liquid contact reaction area of the air floatation device by the water inlet pump, in the gas-liquid contact reaction area, the dissolved gas releaser releases microbubbles with enough quantity to lead pollutants such as oil droplets and suspended matters in water to be adhered to the bubbles, then the pollutants are carried to the water surface in the separation area to form scum, and the purified coking wastewater is discharged from the water outlet pipe after overflowing through the overflow weir; surface scum in the air floatation equipment is scraped away from the water surface by a scum scraper, enters a scum groove and is discharged; the scum adopts an intermittent scum scraping mode so as to reduce the moisture content of the scum, reduce the amount of the scum, reduce the disturbance to the water body and stabilize the quality of the discharged water.
Drawings
FIG. 1 is a front view of the air floatation device for treating coking wastewater.
Wherein, 1, a water inlet; 2. an electromagnetic valve A; 3. a solenoid valve B; 4. a rotating device; 5. a dissolved air releaser; 6. a blade impeller; 7. a water outlet; 8. a backflushing air pipe; 9. a solenoid valve C; 10. a slag discharge port; 11. a slag scraping plate; 12. and (4) an air floatation tank.
Detailed Description
An air floatation device for treating coking wastewater comprises a rotating device (4), a dissolved air releaser (5), a blade type impeller (6) and a recoil air pipe (8), wherein the coking wastewater enters an air floatation tank (12) from a water inlet (1), an electromagnetic valve A (2) is opened, an electromagnetic valve B (3) and an electromagnetic valve C (9) are closed, the rotating device (4) is closed, the blade type dissolved air releaser (5) and the blade type impeller are opened, a slag scraping plate (11) scrapes upper-layer pollutants and discharges the pollutants from a slag discharge port (10), and the treated coking wastewater is discharged from a water outlet (7); after dissolved air releaser (5) is blockked up by the pollutant, close solenoid valve A (2), open solenoid valve B (3), solenoid valve C (9) and rotary device (4), the air is through recoil air pipe (8), carries out the spiral to dissolved air releaser (5) and washes, washes the back that finishes, closes solenoid valve B (3), solenoid valve C (9) and rotary device (4), opens solenoid valve A (2) and continues to handle the operation. The rotating device (4) is connected with the dissolved air releaser (5), and the rotating device (4) is connected under the dissolved air releaser (5). The slag scraping plate (11) and the air flotation tank are kept horizontal. The slag scraping plate (11) is a straight knife type scraping plate. The backflushing air pipe (8) is a pressure hose.
Claims (5)
1. The air floatation equipment for treating the coking wastewater is characterized by comprising a rotating device (4), a dissolved air releaser (5), a blade type impeller (6) and a backflushing air pipe (8), wherein the coking wastewater enters an air floatation tank (12) from a water inlet (1), an electromagnetic valve A (2) is opened, an electromagnetic valve B (3) and an electromagnetic valve C (9) are closed, the rotating device (4) is closed, the dissolved air releaser (5) and the blade type impeller are opened, a slag scraping plate (11) scrapes upper-layer pollutants and discharges the upper-layer pollutants from a slag discharge port (10), and the treated coking wastewater is discharged from a water outlet (7); after dissolved air releaser (5) is blockked up by the pollutant, close solenoid valve A (2), open solenoid valve B (3), solenoid valve C (9) and rotary device (4), the air is through recoil air pipe (8), carries out the spiral to dissolved air releaser (5) and washes, washes the back that finishes, closes solenoid valve B (3), solenoid valve C (9) and rotary device (4), opens solenoid valve A (2) and continues to handle the operation.
2. The air floatation device for treating coking wastewater according to claim 1, characterized in that: the rotating device (4) is connected with the dissolved air releaser (5), and the rotating device (4) is connected under the dissolved air releaser (5).
3. The air floatation device for treating coking wastewater according to claim 1, characterized in that: the slag scraping plate (11) and the air flotation tank are kept horizontal.
4. The air floatation device for treating coking wastewater according to claim 1, characterized in that: the slag scraping plate (11) is a straight knife type scraping plate.
5. The air floatation device for treating coking wastewater according to claim 1, characterized in that: the backflushing air pipe (8) is a pressure hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920504062.4U CN210710835U (en) | 2019-04-15 | 2019-04-15 | Air floatation equipment for treating coking wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920504062.4U CN210710835U (en) | 2019-04-15 | 2019-04-15 | Air floatation equipment for treating coking wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210710835U true CN210710835U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920504062.4U Expired - Fee Related CN210710835U (en) | 2019-04-15 | 2019-04-15 | Air floatation equipment for treating coking wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210710835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811662A (en) * | 2021-01-07 | 2021-05-18 | 范丽丽 | Multiple purifier of sewage |
-
2019
- 2019-04-15 CN CN201920504062.4U patent/CN210710835U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811662A (en) * | 2021-01-07 | 2021-05-18 | 范丽丽 | Multiple purifier of sewage |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20210415 |
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| CF01 | Termination of patent right due to non-payment of annual fee |