CN213060276U

CN213060276U - Dissolved air flotation device with novel air flotation contact chamber structure

Info

Publication number: CN213060276U
Application number: CN202021722270.0U
Authority: CN
Inventors: 周翔
Original assignee: Wuxi Yuanshen Environmental Protection Equipment Co ltd
Current assignee: Wuxi Yuanshen Environmental Protection Equipment Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-27
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a dissolve gas air supporting device with novel air supporting contact chamber structure, including the air supporting case, be equipped with first and second baffle in the air supporting case, thereby first, second baffle both ends are equallyd divide into air supporting contact zone and clear water disengagement zone with the air supporting case inner wall connection respectively, air supporting contact zone top and bottom communicate with the clear water disengagement zone respectively, be connected with sewage-dissolve air water mixture inlet channel on the air supporting case, sewage-dissolve air water mixture inlet channel passes the air supporting case and connects arbitrary baffle and air supporting contact zone intercommunication, be equipped with the drainage block between first, the second baffle, the drainage block sets up and divides the air supporting contact zone into two parts above sewage-dissolve air water mixture inlet channel, be equipped with the clear water collector pipe that communicates with the clear water disengagement zone in the air supporting case. The utility model discloses an air supporting contact area space reduces greatly, can save unnecessary preparation material, and more economical and practical not only can accomplish the separation of dross and clear water fast, can also reduce area, reduce cost greatly.

Description

Dissolved air flotation device with novel air flotation contact chamber structure

Technical Field

The utility model relates to a dissolve gas air supporting device with novel air supporting contact chamber structure.

Background

The raw water cavity, also called a contact chamber, is a key treatment space for wastewater treatment, and when a reaction tank is arranged in front of the raw water cavity, the expected sewage treatment effect can be more effectively achieved. The contact chamber is generally an air-floating component formed by welding and using carbon steel and epoxy coal pitch for corrosion prevention on the surface, a large amount of BOD and COD in raw water can be removed after treatment in the contact chamber, harmful elements, chromaticity and the like in water are effectively reduced, and the contact chamber has better functional cost performance, so that the dominant position of the contact chamber is always kept.

The air-floating contact chamber is an important place for mixing, colliding and adhering micro-bubble groups in high-pressure air release water and floc particles in coagulation water, and the air-floating water purification effect is directly influenced by the good or bad operation effect of the air-floating contact chamber. According to the research, the adhesion and combination process of the air bubbles and floc particles in the air flotation contact zone can be divided into relatively independent sub-processes: (1) the collision of the bubbles and the particles, namely the process that the distance between the bubbles and the particles is gradually reduced to meet; (2) the adhesion of the bubbles and the particles, namely the process that the thickness of the liquid film between the bubbles and the particles is gradually thinned to be broken, and finally a stable three-phase contact angle is formed. The two processes have little dependence on the size of the contact chamber space, so that the contact chamber space can be reduced appropriately.

The structure of the existing dissolved air flotation device is shown in figure 1, and comprises an air flotation contact chamber 1 and a clean water chamber 2 which are arranged side by side and are communicated with each other, wherein the air flotation contact chamber 1 comprises a mixing area 1a and a separation area 1b which are separated by a partition plate, the mixing area 1a is provided with a sewage water inlet pipe 3 and a dissolved air water release head 4, a residue scraping device 5 is arranged above the separation area 1b, a clean water circulation hole 6 communicated with the clean water chamber 2 is arranged below the separation area 1b, sewage and dissolved air water are respectively introduced into the mixing area 1a from the sewage water inlet pipe 3 and the dissolved air water release head 4, the sewage and dissolved air water flow into the separation area 1b after being mixed in the mixing area 1a, generated scum floats to the water surface and is scraped by the residue scraping device 5. However, this structure has problems that: 1. the air flotation contact chamber 1 needs to be provided with a mixing area 1a and a separation area 1b for meeting the requirements of earlier-stage mixing contact and later-stage scum separation of sewage and dissolved gas water, so that the air flotation contact chamber 1 occupies a large space; 2. the mixing zone 1a, the separation zone 1b and the clean water chamber 2 of the air flotation contact chamber 1 are sequentially arranged in a row to treat sewage, so that the whole occupied area is overlarge, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a dissolve gas air supporting device with novel air supporting contact chamber structure, aim at solving among the prior art traditional air supporting contact chamber occupation space big, dissolve the big and with high costs technical problem of gas air supporting device whole area.

The technical scheme of the utility model is that: the utility model provides a dissolve gas air supporting device with novel air supporting contact chamber structure, includes the flotation tank, be equipped with interval arrangement's first baffle and second baffle in the flotation tank, thereby the both ends of first baffle, second baffle equally divide do not with the interior wall connection of flotation tank divide into the flotation contact zone between two baffles and the outside clear water disengagement zone of baffle with flotation tank inner space, the top and the bottom of flotation contact zone respectively with clear water disengagement zone is linked together, be connected with sewage-dissolve air water mixing water inlet pipe on the flotation tank, be equipped with sewage import and dissolved air water import on the sewage-dissolve air water mixing water inlet pipe, sewage and dissolved air water respectively from sewage import and dissolved air water import let in the sewage-dissolve air water mixing water inlet pipe mix, sewage-dissolve air water mixing water inlet pipe passes thereby the flotation tank connect arbitrary baffle with the flotation contact zone is linked together in order to mix sewage and second baffle Dissolved air water is introduced into the air flotation contact area, a water filtering blocking net is arranged between the first partition plate and the second partition plate, the water filtering blocking net is arranged above the sewage-dissolved air water mixing water inlet pipeline and divides the air flotation contact area into an upper part and a lower part, large-volume scum formed by mixing sewage and dissolved air water is filtered and blocked by the water filtering blocking net, small-volume scum moves upwards to enter the clear water separation area and floats to the water surface, a clear water collecting pipe is further arranged in the air flotation tank and is communicated with the clear water separation area, and clear water separated from the scum in the air flotation contact area moves downwards to enter the clear water separation area and is collected and discharged by the clear water collecting pipe.

Furthermore, in the present invention, the first partition board and the second partition board are arranged in parallel.

Further, in the utility model discloses in interval between first baffle and the second baffle does 1/4 ~ 1/3 of air supporting box width.

Further, in the utility model discloses in the top of first baffle, second baffle is equipped with the roof that the slope was outwards turned over the top of playing the guide effect respectively.

Furthermore, in the present invention, the clear water collecting pipes are four and distributed in the lower part of the air flotation tank.

Further, in the present invention, the water filtering blocking net is detachably mounted between the first partition plate and the second partition plate.

Compared with the prior art, the utility model has the following advantage:

1) the utility model discloses a dissolve gas air supporting device is through accomplishing sewage in advance and dissolving the mixture of air water in sewage-dissolving air water mixing inlet channel for the mixed water can directly get into the air supporting contact zone and carry out dross-clean water separation, compares and need additionally set up the structure in mixed district in current air supporting contact chamber, the utility model discloses a contact space in air supporting contact zone reduces greatly, can save unnecessary preparation material, more economical and practical.

2) The utility model discloses in, the special construction of air supporting contact zone and clear water disengagement zone arranges, utilizes two baffles to separate, not only can accomplish the separation of dross and clear water fast, compares in traditional mode of arranging side by side, can also reduce area, reduce cost greatly.

3) The utility model discloses in, the effect of the great dross of volume in the filtration aquatic can be played to the drainage block of specific design, and the drainage block design is for dismantling the form, the later maintenance of being convenient for.

4) The utility model discloses in, with the interval design between first baffle and the second baffle for 1/4 ~ 1/3 of air supporting case width, guarantee that clear water disengagement zone space is enough big to improve the handling capacity of dissolving gas air supporting device self.

Drawings

FIG. 1 is a schematic structural diagram of a dissolved air flotation device in the prior art;

fig. 2 is a schematic structural diagram of the present invention.

Wherein: 1. an air flotation contact chamber; 1a, a mixing zone; 1b, a separation zone; 2. a clear water chamber; 3. a sewage inlet pipe; 4. a gas-dissolving water release head; 5. a slag scraping device; 6. a clear water circulation hole; 100. an air flotation tank; 100a, an air flotation contact area; 100b, a clear water separation zone; 101. a first separator; 102. a second separator; 103. a sewage-dissolved gas water mixed inlet pipeline; 104. water filtering blocking nets; 105. a clear water collector pipe; 106. a top plate.

Detailed Description

The following description will specifically explain embodiments of the present invention with reference to the accompanying drawings.

Example (b):

the utility model relates to a combine figure 2 to show the utility model relates to a dissolve gas air supporting device's with novel air supporting contact chamber structure embodiment, it mainly includes air supporting box 100, be equipped with interval arrangement's first baffle 101 and second baffle 102 in the air supporting box 100, thereby first baffle 101, thereby the both ends of second baffle 102 are equallyd divide into the interior wall connection who does not divide into the air supporting box 100 inner space air supporting contact zone 100a between two baffles and the outside clear water disengagement zone 100b of baffle, the top and the bottom of air supporting contact zone 100a are linked together with clear water disengagement zone 100b respectively.

In the embodiment, the first partition plate 101 and the second partition plate 102 are arranged in parallel, and the distance between the first partition plate 101 and the second partition plate 102 is 1/4-1/3 of the width of the air flotation tank 100.

In this embodiment, the top portions of the first partition 101 and the second partition 102 are further respectively provided with a guiding top plate 106 which is turned obliquely outward.

The air flotation tank 100 is connected to a sewage-dissolved air water mixed inlet pipe 103, not shown, the sewage-dissolved air water mixed inlet pipe 103 is provided with a sewage inlet and a dissolved air water inlet, and sewage and dissolved air water are respectively introduced into the sewage-dissolved air water mixed inlet pipe 103 from the sewage inlet and the dissolved air water inlet to be mixed. A sewage-dissolved air water mixed inlet pipe 103 passes through the air flotation tank 100 and is connected to the first partition plate 101 so as to communicate with the air flotation contact area 100a to introduce the mixed sewage and dissolved air water into the air flotation contact area 100 a.

A water filtering baffle net 104 is detachably arranged between the first clapboard 101 and the second clapboard 102, and the water filtering baffle net 104 is arranged above the sewage-dissolved air water mixing water inlet pipeline 103 and divides the air floatation contact zone 100a into an upper part and a lower part. The large-volume scum formed by mixing the sewage and the dissolved gas water is filtered and intercepted by the water filtering barrier 104, and the small-volume scum moves upwards to enter the clear water separation area 100b and floats to the water surface.

Four clear water collecting pipes 105 positioned at the lower part of the air flotation tank 100 are also arranged in the air flotation tank 100, and the clear water collecting pipes 105 are communicated with the clear water separation zone 100 b. The clear water separated from the scum in the floatation contact area 100a moves downwards to enter the clear water separation area 100b and is collected and discharged by the clear water collecting pipe 105.

When the sewage-dissolved gas water mixing device works specifically, sewage and dissolved gas water are respectively introduced into the sewage-dissolved gas water mixing water inlet pipeline 103 to be mixed, the mixed water is introduced into the air flotation contact area 100a, a large amount of micro bubbles released by the dissolved gas water under normal pressure are carried to clamp floccules in the sewage to float upwards, formed scum with larger volume is intercepted and filtered by the water filtering barrier net 104, the scum with smaller volume continuously moves upwards to enter the clear water separation area 100b and floats to the water surface, and clear water separated from the scum in the air flotation contact area 100a moves downwards to enter the clear water separation area 100b to be collected and discharged through the clear water collecting pipe 105. The utility model discloses a dissolved air supporting device has reduced the contact space of air supporting contact zone 100a, has saved unnecessary preparation material, more economical and practical, and through arranging air supporting contact zone 100a and clear water disengagement zone 100b structure special, utilizes two baffles to separate, not only can accomplish the separation of dross and clear water fast, compares in traditional mode of arranging side by side, can also reduce area, reduce cost greatly.

The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the present invention shall be covered within the protection scope of the present invention.

Claims

1. The utility model provides a dissolve gas air supporting device with novel air supporting contact chamber structure which characterized in that: including air supporting box (100), be equipped with interval arrangement's first baffle (101) and second baffle (102) in air supporting box (100), the both ends of first baffle (101), second baffle (102) equally divide do not with the interior wall connection of air supporting box (100) thereby divide into air supporting contact zone (100a) between two baffles and the outside clear water disengagement zone (100b) of baffle with air supporting box (100) inner space, the top and the bottom of air supporting contact zone (100a) respectively with clear water disengagement zone (100b) are linked together, be connected with sewage-air water mixture water intake pipe (103) on air supporting box (100), be equipped with sewage import and air water dissolving import on sewage-air water mixture water intake pipe (103), sewage and air water dissolving respectively certainly sewage import and air water dissolving water import let in sewage-air water mixture water intake pipe (103) mix, the sewage-dissolved air water mixing water inlet pipeline (103) penetrates through the air flotation tank (100) to be connected with any partition plate, so that the sewage and dissolved air water which are mixed are introduced into the air flotation contact area (100a), a water filtering barrier net (104) is arranged between the first partition plate (101) and the second partition plate (102), the water filtering barrier net (104) is arranged above the sewage-dissolved air water mixing water inlet pipeline (103) and divides the air flotation contact area (100a) into an upper part and a lower part, large-volume scum formed by mixing the sewage and the dissolved air water is filtered and intercepted by the water filtering barrier net (104), small-volume scum moves upwards to enter the clear water separation area (100b) to float to the water surface, a clear water collecting pipe (105) is further arranged in the air flotation tank (100), the clear water collecting pipe (105) is communicated with the clear water separation area (100b), and clear water which separates out the scum in the air flotation contact area (100a) moves downwards to enter the clear water separation area (100b) Is collected and discharged by a clear water collecting pipe (105).

2. The dissolved air bearing device with the novel air bearing contact chamber structure as claimed in claim 1, wherein: the first partition plate (101) and the second partition plate (102) are arranged in parallel.

3. The dissolved air bearing device with the novel air bearing contact chamber structure as claimed in claim 2, wherein: the distance between the first partition plate (101) and the second partition plate (102) is 1/4-1/3 of the width of the air flotation tank (100).

4. The dissolved air bearing device with the novel air bearing contact chamber structure as claimed in claim 1, wherein: the tops of the first partition plate (101) and the second partition plate (102) are respectively provided with a top plate (106) which is obliquely turned outwards and plays a role in guiding.

5. The dissolved air bearing device with the novel air bearing contact chamber structure as claimed in claim 1, wherein: the clear water collecting pipes (105) are four and distributed at the lower part of the air flotation tank (100).

6. The dissolved air bearing device with the novel air bearing contact chamber structure as claimed in claim 1, wherein: the water filtering barrier net (104) is detachably arranged between the first partition plate (101) and the second partition plate (102).