CN113321260A - Vertical flow type double-flow-path air floatation separation device - Google Patents
Vertical flow type double-flow-path air floatation separation device Download PDFInfo
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- CN113321260A CN113321260A CN202110349182.3A CN202110349182A CN113321260A CN 113321260 A CN113321260 A CN 113321260A CN 202110349182 A CN202110349182 A CN 202110349182A CN 113321260 A CN113321260 A CN 113321260A
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- 238000000926 separation method Methods 0.000 title claims abstract description 35
- 238000005273 aeration Methods 0.000 claims abstract description 106
- 239000010865 sewage Substances 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000005188 flotation Methods 0.000 claims abstract description 32
- 239000011229 interlayer Substances 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims description 24
- 230000009977 dual effect Effects 0.000 claims description 10
- 239000008213 purified water Substances 0.000 claims description 7
- 230000002441 reversible effect Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 abstract description 13
- 230000016615 flocculation Effects 0.000 abstract description 13
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 239000013043 chemical agent Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 238000000746 purification Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009852 coagulant defect Effects 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a vertical flow type double-flow-path air flotation separation device with high intensification degree, which is mainly used in the field of air flotation sewage treatment and comprises a sewage mixer, a slag collecting tank, an air flotation cylinder, a dissolved air releaser and a base, wherein the air flotation cylinder is formed by matching three circular pipes with preset pipe diameters, pipe thicknesses and lengths according to respective preset heights; the slag collecting groove is matched and fixed with the No. 3 cylinder through an annular groove at the inner side of the slag collecting groove; the dissolved air releaser comprises an aeration disc and an aeration ring which are respectively positioned at the bottom ends of the cylinder interlayer 1 and the cylinder interlayer 2 and are respectively connected with a dissolved air water pipe; the circular truncated cone in the aeration disc can move in the vertical direction and vibrate in the horizontal direction under the restraint of the fixing piece, the screw, the nut and the gasket; the aeration ring is of an annular hollow shell structure, and the top of the aeration ring is provided with an annular gap with a preset width; the base can provide a preset mounting position for the components above the base and play a role in bearing weight. The invention provides a vertical flow type double-flow-path air floatation separation device with high intensification degree, and solves the problems that the air floatation separation device occupies large area and needs to be provided with a flocculation reaction tank.
Description
Technical Field
The invention relates to sewage treatment equipment, in particular to a vertical flow type double-flow-path air floatation separation device.
Background
The air flotation method in water treatment is a process of forming highly dispersed micro bubbles in water, adhering solid or liquid particles of hydrophobic groups in wastewater to form a water-gas-particle three-phase mixed system, forming flocs with apparent density smaller than that of water after the particles adhere to the bubbles, floating to the water surface, forming a scum layer and scraping off, thereby realizing solid-liquid or liquid-liquid separation; floc contacting with micro-bubble in dissolved air floatation processThe optimal size is in the order of tens of microns, the strength of the flocs can resist certain water flow shearing force, so the flocculation time before dissolved air floatation can be reduced to 2.5-5min or even lower, and correspondingly, the G value is 40-100s under the flocculation hydraulic condition-1Even higher.
The air floatation device can be divided into a horizontal flow type and a vertical flow type according to the flowing direction of fluid, the horizontal flow type air floatation device is widely applied due to simple structure, low manufacturing cost and convenient operation, but the whole volume is larger compared with the vertical flow type air floatation device; at present, the vertical flow type air floatation device is researched less in China. The horizontal flow type air floating system generally comprises an air floating separation device, an air dissolving device, an air releasing device, a slag scraping device and the like, wherein the horizontal flow type air floating separation device is generally a cubic air floating box, the whole air floating box comprises a contact chamber, a separation chamber, a slag collecting groove, an overflow port and the like, in addition, a flocculation reaction tank is required to be arranged outside the air floating box, sewage added with a flocculating agent firstly stays in the flocculation reaction tank for a period of time to form floccules, and then the floccules are conveyed into the air floating box for treatment. The configuration of the air floatation system greatly increases the occupied area of the whole air floatation system, and has high manufacturing cost, low intensification degree and complex process.
Disclosure of Invention
The invention aims to provide a vertical flow type double-flow-path air floatation separation device with high intensification degree, and solves the problems that the air floatation separation device occupies large area and needs a flocculation reaction tank.
The invention adopts the following technical scheme: a vertical flow type double-flow-path air flotation separation device comprises a sewage mixer, a slag collecting groove, an air flotation cylinder body, a dissolved air releaser and a base, wherein the air flotation cylinder body is formed by matching three cylinders with preset pipe diameters, pipe thicknesses and lengths, namely a cylinder No. 1, a cylinder No. 2 and a cylinder No. 3 according to preset heights, the upper part of the cylinder No. 1 is connected and fixed with the sewage mixer through a flange No. 1, and the sewage mixer is provided with a sewage inlet pipe and a chemical feeding pipe; the slag collecting groove is matched and fixed with the No. 3 cylinder through an annular groove at the inner side of the slag collecting groove; the 3# cylinder is connected and fixed with the base through a lower end flange, and a purified water outflow pipe communicated with the interlayer is arranged at a preset distance from the bottom end of the 3# cylinder; the base supports and restrains the positions of the No. 2 cylinder and the aeration disc device shell through the No. 1 annular groove and the No. 2 annular groove respectively; the dissolved air releaser comprises an aeration disc and an aeration ring, is respectively positioned at the bottom ends of the No. 1 interlayer and the No. 2 interlayer, is supported and fixed by the base and is respectively connected with the No. 1 dissolved air water inlet pipe and the No. 2 dissolved air water inlet pipe which penetrate through the base; the aeration disc comprises a shell, a circular truncated cone, a flow guide cone, a fixing piece, a screw rod, a nut and a gasket, wherein when the circular truncated cone moves along the vertical direction, the sectional area of a fluid channel between the side face with inclination of the circular truncated cone and the shell is changed, and an annular gap with a preset width at the top of the aeration ring is used as an aeration channel of a No. 2 interlayer; the round platform spare can move and vibrate along the horizontal direction along vertical direction under the restraint of mounting, screw rod, nut, gasket: the base is a cylindrical entity provided with a screw hole, an annular groove, a dissolved air water inlet pipe hole and a flange hole.
Sewage and chemical agents respectively enter the cylinder No. 1 from the sewage inlet and the chemical feeding pipe through the sewage mixer, and a fluid channel with the cross section area from large to small of the sewage mixer can provide a buffer space when the flow rates of the sewage and the chemical agents are large, can promote the quick mixing of the sewage and the chemical agents and can further mix in the narrow cylinder No. 1; the sewage mixer and the No. 1 cylinder are used as places for quickly mixing sewage and chemical agents, and flocs required by combination with micro-bubbles can be formed, so that a flocculation reaction tank equipped in a conventional air floatation system is saved. The micro bubbles are formed by the gas dissolving water through the decompression and decompression energy dissipation of the gas dissolving releaser. The dissolved air water enters the aeration disc and the aeration ring through the pipeline of the dissolved air water inlet pipe penetrating through the base. For the aeration disc, when the flow rate of dissolved air water is changed in a large range, the circular truncated cone piece in the aeration disc can move and vibrate in a preset path range along the vertical direction in a screw moving space provided by the circular truncated cone stepped hole under the restraint of the fixing piece, the screw, the nut and the gasket, obviously, the aeration rate of the aeration disc can change along with the change of flow parameters of the dissolved air water, and meanwhile, the vibration is favorable for preventing the aeration disc from being attached by sediments and has a self-cleaning function; the larger the upward moving degree of the circular truncated cone piece is, the smaller the included angle between the water outlet and aeration direction of the aeration disc and the vertical direction is, so that micro bubbles can float upwards and can interact with particles in sewage; the annular gap at the upper side of the aeration ring, namely the aeration channel, enables the water outlet and aeration directions of the dissolved air water to be vertical and upward. The sewage that carries a large amount of flocs of 1# bobbin end outflow mixes with the reverse offset of the dissolved air water that flows out from the aeration dish that releases the microbubble, can be favorable to the collision of microbubble and floc granule and adhere to and form the airborne floc, in addition sewage can be favorable to in microbubble and the sewage under the coagulant effect destabilize the granule with the reverse offset of dissolved air water and take place the copolymerization and obtain the airborne floc that the separation characteristic is more. The air-borne flocs float up to the liquid level in the interlayer 1 between the No. 1 cylinder and the No. 2 cylinder and overflow to a slag collecting tank to be collected, discharged and treated, and at the moment, the sewage finishes the first flow of the air-flotation water purification process; the sewage mixed with the dissolved air water in the interlayer 1 flows to the upper part of the No. 2 cylinder from the lower part and enters the interlayer 2 between the No. 2 cylinder and the No. 3 cylinder again and flows downwards, at the moment, particles and/or flocs which are not completely removed in the sewage are carried to float to the liquid surface again under the action of micro-bubbles released by the aeration ring and overflow to a slag collecting tank to be collected, discharged and treated, the sewage subjected to secondary purification flows out from a purified water outflow pipe at the lower part of the No. 3 cylinder, and at the moment, the sewage finishes the second flow of the air floatation water purification process.
Preferably, the sewage mixer is divided into an upper part, a middle part and a lower part from top to bottom according to the sectional area of the fluid channel; the upper part and the lower part of the sewage mixer are respectively provided with a cylindrical fluid channel with different diameters of circular cross section; the middle fluid channel is a circular truncated cone-shaped transition section with a decreasing circular cross section; the bottom end of the lower cylindrical structure is connected and fixed with the upper end of the 1# cylinder through a flange; two sides of the cylindrical part at the upper part of the sewage mixer are provided with a sewage inflow pipe and two short pipes of a dosing pipe. The fluid channel with the larger diameter at the upper part in the sewage mixer can provide retention and buffering time when the flow of sewage and/or chemical agents is larger; the transition section fluid channel with the gradually reduced middle circular cross section is beneficial to enhancing the mixing of sewage and chemical agents; the lower part in the sewage mixer is connected with the No. 1 cylinder to form an equal-diameter fluid channel which is used as a sewage flocculation reaction place, and the retention time of sewage in the place is the flocculation reaction time of particles in the sewage. The flocculation reaction time can be changed along with the change of the total flow of the sewage and the chemical agent.
Preferably, the slag collecting groove is of a deep-shallow two-reverse-direction annular groove structure, wherein the deep groove is used as a scum collecting space, the shallow groove is used for being connected with the upper end of the 3# cylinder in a matching mode, and the bottom of the deep groove is provided with a slag discharge pipe. Liquid level dross between 1# section of thick bamboo and the 3# section of thick bamboo in the gas cell body overflows under the effect of water conservancy condition to the deep groove in the scum trough, is discharged and is handled through the scum pipe after being floated and collected.
Preferably, the 1# barrel, the 2# barrel and the 3# barrel are all cylinders in the shape of a cylindrical shell, the relative positions of the 1# barrel, the 2# barrel and the 3# barrel are preset, and the position of the bottom end of the 2# barrel is lower and the position of the bottom end of the 1# barrel is higher relative to the height of the bottom end of the 3# barrel in the vertical direction; the 2# barrel top position is lower and the 1# barrel top position is higher relative to the height at which the 3# barrel top is located. The diameters, lengths and assembly positions of the No. 1 cylinder, the No. 2 cylinder and the No. 3 cylinder are all determined according to the satisfaction of hydraulic conditions in the No. 1 cylinder, the interlayer 1 and the interlayer 2, such as sewage treatment capacity, water flow speed, hydraulic retention time, surface load and the like.
Preferably, the aeration disc comprises a shell, a circular truncated cone, a guide cone, a fixing piece, a screw, a nut and a gasket, wherein the fixing piece, the screw, the nut and the gasket are used and arranged in a matched manner, so that the fixing piece, the screw, the nut and the gasket are equal in number in the vertical flow type double-flow air flotation separation device; the shell is cylindrical, the bottom end of the shell is placed into an annular groove with preset width and depth on the upper side of the base for assembly, and the position of the shell is restrained by the bottom end of the shell; stepped holes are arranged in the circular truncated cone piece in the circumferential direction at equal intervals in a penetrating mode, the diameters of the stepped holes are large at the top and small at the bottom, and transverse vibration spaces can be reserved for the long bolts; the top end of the circular truncated cone is provided with a hollow conical shell-shaped flow guide cone without a bottom; the fixing pieces are arranged below the circular truncated cone pieces and fixed on the upper part of the base through bolts, and the mounting positions are arranged in an equiangular circumferential direction; the fixing piece is in a middle convex shape with a high middle part and low two sides, openings are formed in the center and the two sides of the fixing piece, the holes in the two sides are used for fixing the fixing piece and the base through screws, a long bolt with a preset length penetrates through the center hole of the fixing piece and the circular truncated cone, and the moving path and the moving range of the circular truncated cone are restrained by gaskets and nuts in preset shapes at the top end and the bottom end of the long bolt; the assembly mode and the numerical relation among the shell, the circular truncated cone piece, the flow guide cone, the fixing piece, the screw rod, the nut and the gasket can enable the circular truncated cone piece to vertically move and horizontally vibrate in a preset path when the flow parameters of sewage change and the flow form is in turbulent flow, so that the blockage of an aeration channel in the aeration disc can be inhibited, the self-cleaning characteristic of the aeration disc is kept, and the sectional area of the aeration channel in the aeration disc can be changed to dynamically influence the aeration effect of the aeration disc.
Preferably, the aeration ring is of an annular hollow shell structure, and the top of the aeration ring is provided with an annular gap with a preset width; the bottom of the aeration ring is communicated with a dissolved air water inlet pipe which penetrates through the base; the outline of the fluid channel inside the aeration ring can be round or square, but is not limited to the outline shape. The outline shape of the fluid channel inside the aeration ring needs to be a regular geometric shape so as to make the initial direction of water outlet and aeration of the annular gap on the upper side of the aeration ring be vertical and upward, thereby inhibiting coalescence of micro-bubbles. The width of the annular gap on the upper side of the aeration ring can influence the aeration effect.
Preferably, the aeration disc and the aeration disc are respectively arranged at the lower ends of the two interlayers of the air flotation cylinder. Micro bubbles formed by aeration of the aeration disc act on a first flow of an air-flotation water purification process and are used for treating flocs in sewage flowing out of the No. 1 cylinder, and the micro bubbles formed by aeration of the aeration disc carry the flocs to float to the liquid level; and micro bubbles formed by aeration ring aeration act on the second flow of the air-flotation water purification process and are used for treating flocs left after the first flow of the air-flotation water purification process, the micro bubbles formed by aeration ring aeration carry the flocs to float to the liquid level, and the purified sewage flows out from the purified water outflow pipe at the lower part of the No. 3 cylinder.
Preferably, the base is a cylindrical solid, and the 1# and 2# annular grooves with the top surface facing downwards with a predetermined depth are respectively used for restraining and supporting the 2# cylinder and the shell; the base penetrates through the No. 1 dissolved air water inlet pipe hole and the No. 2 dissolved air water inlet pipe hole at two positions of a preset position, and the two holes are respectively used for passing through the dissolved air water inlet pipes of the aeration disc and the aeration ring; the base is provided with the screw hole that is used for installing the mounting along circumference. The base can fix the No. 1 cylinder, the aeration disc and the aeration ring and can support and restrain the No. 2 cylinder; the base is perforated at a preset position and penetrates through the two gas-dissolved water inlet pipes, and the 2# flange holes arranged in the circumferential direction are used for fixing the 3# cylinder.
Compared with the prior art, the invention has the beneficial effects that: the vertical flow type double-flow air floatation separation device is high in intensification degree, a slag collecting groove is integrated, and a sewage mixer and a 1# cylinder jointly play a role of a flocculation reaction tank, so that an external slag removing device and the flocculation reaction tank are not needed, the manufacturing cost and the occupied area of the whole set of vertical flow type double-flow air floatation separation device can be saved, and the space utilization efficiency in the air floatation cylinder body can be higher; (II) the internal fluid channel of the vertical flow type double-flow-path air-floatation separation device and the inflow and outflow of sewage form a double flow path of fluid, so that the sewage is subjected to two-stage purification from inflow to outflow, and the air-floatation separation efficiency can be improved; (III) an aeration disc and an aeration ring in the dissolved air releaser act on a first flow and a second flow of the sewage treatment process in the vertical flow type double-flow air floatation separation device, and the aeration characteristics of the aeration disc and the aeration ring are different according to different sewage treatment loads in the first flow and the second flow; and (IV) the upper part of the air floatation cylinder body is integrally connected and fixed by a matched fixing device and the lower part of the 3# cylinder body is connected and fixed with the base through a flange, so that the base, an aeration ring and an aeration disc which are arranged through the base can be detached and replaced according to the requirements.
Drawings
FIG. 1 is an isometric view of a vertical air bearing separation of the present invention;
FIG. 2 is a longitudinal sectional view of the vertical flow type double flow path air flotation separation device of the present invention;
FIG. 3 is a longitudinal partial cross-sectional view of a vertical flow type dual flow path air flotation separation device of the present invention;
FIG. 4 is a schematic view of the structure of an aeration disk of the present invention;
FIG. 5 is a schematic view of the base structure of the present invention;
FIG. 6 is a schematic view of an aeration ring configuration of the present invention;
FIG. 7 is a schematic view of the fastener construction of the present invention;
in the figure: 1. a vertical flow type double-flow air-float separation device, 2, a sewage mixer, 3, a sewage inlet pipe, 4, a chemical feeding pipe, 5, 1# flanges, 6, 1# upper flanges, 7, 1# lower flanges, 8, 1# flange holes, 9 slag collecting grooves, 10, a slag discharge pipe, 11, an air-float cylinder, 12, 1# cylinders, 13, 2# cylinders, 14, 3# cylinders, 15, 1# interlayers, 16, 2# interlayers, 17, a purified water outlet pipe, 18, a base, 19, a dissolved air releaser, 20, 2# upper flanges, 21, 2# flanges, 22, 1# air-dissolved water inlet pipe, 23, 2# air-dissolved water inlet pipe, 24, an aeration ring, 25, an aeration disc, 26, a diversion cone, 27, a circular truncated cone, 28, a fixing piece, 29, a screw rod, 30, a gasket, 31, a nut, 32, a stepped hole, 33, a shell, 34, 1# air-dissolved water pipe holes, 35, a fixing piece screw hole, 36, 1# annular grooves, 37. 2# annular groove, 38 # gas-dissolved water inlet pipe hole, 2# gas-dissolved water inlet pipe hole, 39 # flange hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, several means are one or more, and more means are two or more. The description of first, second, etc. if any, is for the purpose of distinguishing between technical features and not intended to indicate or imply relative importance or implicitly indicate a number of indicated technical features or implicitly indicate a precedence relationship of indicated technical features.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the embodiments described below are some, but not all embodiments of the present invention.
The following describes a vertical flow type two-flow air flotation separation device 1 according to an embodiment of the present invention with reference to fig. 1 to 7, including a sewage mixer 2, a slag collection tank 9, an air flotation cylinder 11, a base 18, and a dissolved air releaser 19. Wherein the sewage mixer 2 is divided into an upper part, a middle part and a lower part from top to bottom according to the sectional area of a fluid channel; the upper part and the lower part of the sewage mixer 2 are respectively provided with a cylindrical fluid channel with different diameters of circular cross sections; the middle fluid channel is a circular truncated cone-shaped transition section with a decreasing circular cross section; the upper part of the sewage mixer 2 is provided with a sewage inlet pipe 3 and a dosing pipe 4, the lower part is provided with a 1# upper flange 6, and the upper end of the 1# cylinder, the upper end of which is provided with a 1# lower flange 7, is connected and fixed through a 1# flange 5. The 1# flange 5 is provided with a predetermined number and positions of 1# flange holes 8, one of which is for fixing the sewage mixer 2 and the 1# barrel 12, and the other of which is for lifting and fixing the position of the 1# barrel 12. The slag collecting groove 9 is a shallow-deep annular groove with two reverse openings along the radial direction, the shallow groove is used for being matched and connected with the upper end of the 3# cylinder 14, and the bottom of the deep groove is provided with a slag discharge pipe 10. The air flotation cylinder body is composed of a 1# cylinder 12, a 2# cylinder 13 and a 3# cylinder with three preset pipe diameters and pipe thicknesses and length according to respective preset height matching, the upper part of the 1# cylinder 12 is connected and fixed with a sewage mixer 2 through a 1# flange 5, the 2# cylinder 13 is supported and restrained through a 2# annular groove 37 in a base 18, the upper end of the 3# cylinder 14 is matched and fixed with the 3# cylinder through an annular groove on the inner side of a slag collecting groove 9, the lower end of the 3# cylinder is connected and fixed with the base through a 2# flange 21 through a 2# upper flange 20, the 2# flange 21 is provided with a circumferential flange hole 39 according to a preset position, and a purified water outflow pipe 17 communicated with a 2# interlayer 16 is arranged at a preset distance from the bottom end of the 3# cylinder 14. The # 2 upper flange 20 and the base 18 are each provided with # 2 flange holes 39 in a predetermined number and position. Base 18 supports and constrains 2# barrel 13 and housing 33 of aeration disc 25 arrangement by # 1 annular groove 36 and # 2 annular groove 37; a dissolved air releaser 19 is supported and fixed above the base 18, comprises an aeration disc 25 and an aeration ring 24, and is respectively positioned at the bottom ends of the 1# interlayer 15 and the 2# interlayer 16; the No. 1 gas-dissolving water pipe 22 and the No. 2 gas-dissolving water pipe 23 are respectively communicated with the aeration disc 25 and the aeration ring 24 through a No. 1 gas-dissolving water inlet pipe hole 34 and a No. 2 gas-dissolving water inlet pipe hole 38; the fasteners 28 are installed through the fastener screw holes 35 in a predetermined number and location. The aeration disc 25 comprises a shell, a conical piece 26, a circular truncated cone 27, a fixing piece 28, a screw 29, a gasket 30 and a nut 31, wherein the circular truncated cone 27 can move in the vertical direction and vibrate in the horizontal direction under the restraint of the fixing piece 28, the screw 29, the nut 31, the gasket 30 and a stepped hole 32, so that the sectional area of a fluid channel between the side surface of the circular truncated cone 27 and the shell is changed; a No. 1 dissolved air water inlet pipe 22 is arranged below the aeration ring 24. The aeration ring 24 is an annular hollow shell structure, and the top of the aeration ring is provided with an annular gap with a preset width; the bottom of the base is communicated with a dissolved air water inlet pipe which penetrates through the base; the outline shape of the internal fluid channel needs to be a regular geometric shape, and can be a circle or a square, but is not limited to the outline shape; a No. 2 dissolved gas water inlet pipe is arranged below the aeration ring 24.
The working process is as follows: sewage and chemical agents respectively enter the No. 1 cylinder 12 from the sewage inlet 3 and the chemical feeding pipe 4 through the sewage mixer 2, and a fluid channel with the cross section area of the sewage mixer 2 from large to small can provide a buffer space when the flow of the sewage and the chemical agents is large, can promote the quick mixing of the sewage and the chemical agents and can further mix in the long and narrow No. 1 cylinder 12; the sewage mixer 2 and the No. 1 cylinder 12 are used as places for quickly mixing sewage and chemical agents, and flocs required by combination with micro-bubbles can be formed, so that a flocculation reaction tank equipped in a conventional air floatation system is saved. The microbubbles are formed by the gas-dissolved water passing through the gas-dissolved releaser 19 for decompression and energy dissipation. The dissolved air water enters the aeration disc 25 and the aeration ring 24 through the pipeline of the dissolved air water inlet pipe penetrating through the base. For the aeration disc 25, when the flow rate of the dissolved air water changes in a large range, the circular truncated cone 27 in the aeration disc 25 can move and vibrate in a predetermined path range along the vertical direction in the screw moving space provided by the circular truncated cone stepped hole 32 under the constraint of the fixing piece 28, the screw 29, the nut 31 and the gasket 30, obviously, the aeration rate of the aeration disc 25 can change along with the change of the flow parameters of the dissolved air water, and meanwhile, the vibration is beneficial to preventing the aeration disc 25 from being attached by sediment and having a self-cleaning function; the larger the upward moving degree of the circular truncated cone 27 is, the smaller the included angle between the water outlet and aeration directions of the aeration disc 25 and the vertical direction is, so that micro bubbles can float upwards and can interact with particles in sewage; the annular gap at the upper side of the aeration ring 24, namely the aeration channel, enables the water outlet and aeration directions of the dissolved air water to be vertical and upward. The sewage that carries a large amount of flocs of 1# section of thick bamboo 12 bottom outflow and the reverse offset of dissolved air water that flows out from aeration dish 25 that releases the microbubble mix, can be favorable to the collision of microbubble and floc granule with adhere to and form the airborne floc, in addition sewage can be favorable to in microbubble and the sewage under the coagulant effect destabilize the granule and take place the copolymerization and obtain the airborne floc that the air supporting separation characteristic is more with the reverse offset mixing of dissolved air water. The air-borne flocs float to the liquid level in the 1# interlayer 15 between the 1# cylinder 12 and the 2# cylinder 13 and overflow to the slag collecting tank 9 to be collected, discharged and treated, and at the moment, the sewage finishes the first flow of the air-flotation water purification process; the sewage mixed with the dissolved air water in the interlayer No. 1 15 flows to the upper part of the cylinder No. 2 13 from the lower part and enters the interlayer No. 2 16 between the cylinder No. 2 13 and the cylinder No. 3 14 again and flows downwards, at the moment, particles and/or flocs which are not completely removed in the sewage are carried to float to the liquid surface again under the action of micro-bubbles released by the aeration ring 24 and overflow to the slag collecting tank 9 to be collected, discharged and treated, the sewage subjected to secondary purification flows out from the purified water outflow pipe 17 at the lower part of the cylinder No. 3 14, and at the moment, the sewage completes the second flow of the air flotation water purification process.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (9)
1. The utility model provides a two flow air supporting separator (1) of vertical-flow type, includes sewage blender (2), collection sediment groove (9), air supporting barrel (11), dissolves gas releaser (19), base (18), its characterized in that: the air flotation cylinder body is formed by matching three cylinders with preset pipe diameters, pipe thicknesses and lengths, namely a No. 1 cylinder (12), a No. 2 cylinder (13) and a No. 3 cylinder (14) according to preset heights, the upper part of the No. 1 cylinder (12) is connected and fixed with a sewage mixer (2) through a No. 1 flange (5), and the sewage mixer (2) is provided with a sewage inlet pipe (3) and a chemical feeding pipe (4); the slag collecting groove (9) is of a structure with two reverse annular grooves, one deep and the other shallow, and is matched and fixed with the upper end of the 3# cylinder (14) through the annular groove at the inner side; the 3# cylinder (14) is connected and fixed with the base (18) through a 2# flange (21), and a purified water outlet pipe (17) communicated with the 2# interlayer (16) is arranged at a preset distance from the bottom end of the 3# cylinder (14); the base supports and restricts the positions of the No. 2 barrel (13) and the aeration disc (25) device shell through a No. 1 annular groove (36) and a No. 2 annular groove (37), respectively; the dissolved air releaser (19) comprises an aeration disc (25) and an aeration ring (24), which are respectively positioned at the bottom ends of the 1# interlayer (15) and the 2# interlayer (16), are supported and fixed by the base (18), and are respectively connected with the 1# dissolved air water inlet pipe (22) and the 2# dissolved air water inlet pipe (23) which penetrate through the base (18); the aeration disc (25) comprises a shell (33), a circular truncated cone (27), a flow guide cone (26), a fixing piece (28), a screw rod (29), a nut (31) and a gasket (30), wherein when the circular truncated cone (27) moves along the vertical direction, the cross-sectional area of a fluid channel between the side face with the inclination and the shell is changed, and an annular gap with a preset width at the top of an aeration ring (24) is used as an aeration channel of the 2# interlayer (16); the circular truncated cone can move in the vertical direction and vibrate in the horizontal direction under the restraint of the fixing piece (28), the screw rod (29), the nut (31) and the gasket (30); the base (18) is a cylindrical entity provided with a screw hole, an annular groove, a dissolved air water inlet pipe hole and a flange hole.
2. A vertical flow, dual flow air flotation separation device (1) according to claim 1, characterized in that: the sewage mixer (2) is divided into an upper part, a middle part and a lower part from top to bottom according to the sectional area of a fluid channel; the upper part and the lower part of the sewage mixer are cylindrical fluid channels with different circular cross section diameters; the middle fluid channel is a circular truncated cone-shaped transition section with a decreasing circular cross section; a sewage inlet pipe (3) and a dosing pipe (4) are arranged on two sides of the cylindrical part at the upper part of the sewage mixer, and the bottom end of the cylindrical structure at the lower part is connected and fixed with the upper end of a No. 1 cylinder (12) through a No. 1 flange (5); .
3. A vertical flow, dual flow air flotation separation device (1) according to claim 1, characterized in that: the slag collecting groove (9) is a deep-shallow two-way annular groove, wherein the deep groove is used as a scum collecting space, and the shallow groove is used for being matched and fixed with the upper end of the 3# cylinder (14).
4. A vertical flow, dual flow air flotation separation device (1) according to claim 1, characterized in that: the cylinder is a cylinder with a shape of a cylindrical shell, and the 1# cylinder (12), the 2# cylinder (13) and the 3# cylinder (14) are cylinders with a shape of a cylindrical shell, the relative positions of the 1# cylinder (12), the 2# cylinder (13) and the 3# cylinder (14) are preset, and the bottom end of the 2# cylinder (13) is lower and the bottom end of the 1# cylinder (12) is higher relative to the height of the bottom end of the 3# cylinder (14) along the vertical direction; the top end of the No. 2 cylinder (13) is lower and the top end of the No. 1 cylinder (12) is higher relative to the height of the top end of the No. 3 cylinder (14).
5. A vertical flow, dual flow air flotation separation device (1) according to claim 1, characterized in that: the aeration ring (24) is of an annular hollow shell structure, and the top of the aeration ring (24) is provided with an annular gap with a preset width; the bottom of the aeration ring (24) is communicated with a 2# dissolved air water inlet pipe (23) penetrating through the base; the outline of the fluid channel in the aeration ring (24) is a regular geometric shape, and can be round or square, but is not limited to the outline shape.
6. A vertical flow, dual flow air flotation separation device (1) according to claim 1, characterized in that: the aeration disc (25) comprises a shell (33), a circular truncated cone (27), a guide cone (26), a fixing piece (28), a screw rod (29), a nut (31) and a gasket (30), wherein the shell (33) is cylindrical, and the bottom end of the shell is restricted by a No. 2 annular groove (37); stepped holes (32) which are circumferentially arranged at equal intervals penetrate through the circular truncated cone (27), the diameters of the stepped holes (32) are large at the top and small at the bottom, and a transverse vibration space can be reserved for the long bolt; the top end of the round table piece (27) is provided with a hollow conical shell-shaped diversion cone (26) without a bottom; a fixing piece (28) is arranged below the circular truncated cone piece (27), the fixing piece (28) is fixed on the upper part of the base (18) through screws, and the mounting positions are arranged in an equiangular circumferential direction; the fixing piece (28) is in a middle convex shape with a high middle part and low two sides, and can be in a shape like a Chinese character 'ji' or a wave shape, but is not limited to the shape; the center and two sides of the fixing piece (28) are provided with holes, the holes on two sides are used for fixing the fixing piece and the base through screws, a long bolt with a preset length penetrates through the center hole of the fixing piece and the circular truncated cone piece (27), and the moving path and range of the circular truncated cone piece are limited through a gasket (30) and a nut (31) with preset shapes at the top end and the bottom end of the long bolt.
7. A vertical flow, dual flow air flotation separation device (1) according to claim 1, characterized in that: the aeration disc (25) and the aeration ring (24) are respectively arranged at the lower ends of the No. 1 interlayer (15) and the No. 2 interlayer (16) of the air flotation cylinder body (11).
8. A vertical flow, dual flow air flotation separation device (1) according to claim 1, characterized in that: the base (18) is a cylindrical solid, and a 1# annular groove (36) and a 2# annular groove (37) with the top surface facing downwards to a preset depth are respectively used for restraining and supporting the 2# barrel (13) and the shell; the base (18) is provided with a 1# dissolved air water inlet pipe (22) and a 2# dissolved air water inlet pipe (23) which are arranged at two through holes at a preset position and pass through an aeration disc (25) and an aeration ring (24); the base (18) is provided with a screw hole (35) used for installing the fixing piece (28) and a No. 2 flange hole (39) used for fixing the No. 3 cylinder (14) along the circumferential direction.
9. A vertical flow, dual flow air flotation separation device (1) according to claim 1, characterized in that: comprising a vertical flow, dual flow air flotation separation apparatus as claimed in any one of claims 1 to 8.
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| CN112125414A (en) * | 2020-09-11 | 2020-12-25 | 殷富新 | Air bag type vibration aeration disc, aeration system and aeration method |
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| CN202542906U (en) * | 2012-04-10 | 2012-11-21 | 孙正甫 | Dissolved air floating device |
| KR20150069782A (en) * | 2013-12-16 | 2015-06-24 | 금호산업주식회사 | Multi-staged air flotation system and Apparatus for treating water with the same |
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