CN214653773U - Air floatation system - Google Patents
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- CN214653773U CN214653773U CN202120192733.5U CN202120192733U CN214653773U CN 214653773 U CN214653773 U CN 214653773U CN 202120192733 U CN202120192733 U CN 202120192733U CN 214653773 U CN214653773 U CN 214653773U
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Abstract
The application discloses an air floatation system, which comprises an air floatation tower, an air dissolving device and a conveying pipeline communicated with the air floatation tower and the air dissolving device, wherein the air floatation tower is provided with at least two layers of water distributors connected with the conveying pipeline from top to bottom, and the water distributor at the top layer is also connected with a raw water pipe for inputting raw water; and a clear water collector is arranged at the bottom of the air floating tower. This application this air supporting system utilizes and dissolves the gas device and produce three strands and dissolve the air water, releases into the air supporting tower by three water-locator respectively, and three water-locator and clear water collector can reciprocate at the air supporting tower through the guide rail moreover. The system has the characteristics of good effluent quality, stable treatment effect, small occupied area, high adjustment freedom degree and the like.
Description
Technical Field
The application relates to the field of sewage treatment, in particular to an air floatation system.
Background
The existing air floatation products in the field of water treatment have three characteristics: 1. the space of the separation area is large; 2. the contact zone requires water flow turbulence, and the separation zone requires laminar flow or close to standstill of the water body; 3. on the one hand, the bubbles are required to be small enough to have sufficient density and suitable size to combine with the flocs, and on the other hand, the bubbles are required to be large enough to provide sufficient buoyancy to shorten the reaction time. Feature 1 results in a difficult reduction in the volume of the air-float product, while features 2 and 3 clearly have conflicting requirements for water flow and air bubbles, which are important reasons for restricting the performance of the air-float product today.
In recent years, some researchers have proposed counter-flow air flotation, which is generally a tower type, in which raw water flows from top to bottom, bubbles released from dissolved air water move from bottom to top, and clean water is discharged from the bottom. This mode has several advantages: 1. the occupied area is small, the space utilization rate is high, and the whole tower body is not only a contact zone but also a separation zone. 2. A suspended layer is formed by flocs and bubbles in raw water between the raw water distributor and the dissolved water distributor, the bubble filtering effect is achieved, the bubble utilization rate is high, and the suspended layer is favorable for the close combination of the flocs and the bubbles. 3. When the flocs sink, the flocs continuously encounter the bubbles, and the density of the bubbles is higher as the flocs are closer to the bottom, so that the flocs are difficult to discharge along with water flow, and the effluent quality can reach high. However, this mode has its drawbacks: 1. the downward flow of the raw water can block the rising of the air-carrying flocs, and the higher the flow rate of the raw water is, the more difficult the air-carrying flocs rise, and even the air-carrying flocs are dispersed by the water flow. 2. In the contact zone of the existing air flotation product, small bubbles and small floccules are copolymerized and grow under the action of a flocculating agent to form air-carrying floccules with larger particles, and the countercurrent air flotation has poor copolymerization effect because the entering points of raw water and dissolved air water are far away.
SUMMERY OF THE UTILITY MODEL
The application aims to overcome at least part of the defects in the prior art and provide an air floatation system with higher controllability and better solid-liquid separation effect and a using method of the air floatation system.
In order to achieve the technical purpose, the technical scheme adopted by the application is as follows:
an air floatation system comprises an air floatation tower, an air dissolving device and a conveying pipeline communicated with the air floatation tower and the air dissolving device, wherein the air floatation tower is provided with at least two layers of water distributors connected with the conveying pipeline from top to bottom, and the water distributor at the top layer is also connected with a raw water pipe for inputting raw water; and a clear water collector is arranged at the bottom of the air floating tower.
Preferably, a guide rail for attaching the water distributor and the clean water collector is vertically arranged in the air floatation tower, and the water distributor and the clean water collector are respectively arranged on the guide rail through a sliding block with a locking structure.
Furthermore, the conveying pipeline comprises branch pipelines respectively corresponding to the water distributor and the clean water collector, the branch pipelines are respectively and fixedly connected to the side wall of the air floatation tower, and the water distributor and the clean water collector are respectively connected with the branch pipelines through hoses.
Specifically, the conveying pipeline comprises a water collecting pipeline connected with the clean water collector, and the water collecting pipeline comprises a backflow water pipe communicated with the clean water collector and the gas dissolving device, and a water outlet pipe connected with the middle section of the backflow water pipe through a flow dividing device.
Furthermore, a first mixed liquid water distributor is arranged at the top layer of the air floatation tower, the conveying pipeline comprises a mixing pipeline connected with the first mixed liquid water distributor, and the mixing pipeline comprises a third dissolved air water pipeline communicated with the first mixed liquid water distributor and an air dissolving device and a raw water pipe converged into the third dissolved air water pipeline; the first mixed liquid water distributor is arranged below the liquid level and is more than 0.2m away from the liquid level.
Furthermore, a first gas-dissolved water distributor is arranged below the first mixed liquid water distributor, the conveying pipeline comprises a first gas-dissolved water pipeline connected with the first gas-dissolved water distributor, and the first gas-dissolved water pipeline is connected with the gas dissolving device; alternatively, the first and second electrodes may be,
a second gas-dissolved water distributor is arranged between the first mixed liquid water distributor and the first gas-dissolved water distributor, the conveying pipeline comprises a second gas-dissolved water pipeline connected with the second gas-dissolved water distributor, and the second gas-dissolved water pipeline is connected with the gas dissolving device;
wherein the distance between the first mixed liquid water distributor and the second water distributor for dissolved gas water is more than 0.1 m; the distance between the first mixed liquid water distributor and the first dissolved gas water distributor is within the range of 0-5 m; the distance between the clear water collector and the first water distributor for dissolved gas is more than 0.1 m.
Preferably, the first dissolved air water pipeline, the second dissolved air water pipeline and the third dissolved air water pipeline are provided with a collecting node provided with a flow dividing device.
Optionally, the water distributor is selected from any one or more of a TV type water distributor, a TJ type water distributor, a perforated pipe water distributor and a microporous aeration disc; the air dissolving device is selected from any one of an air compressor air dissolving device, a multiphase flow pump, an electrolysis air dissolving device and a jet air dissolving device.
Compared with the prior art, the method has the following advantages:
(1) this application is based on counter-flow air supporting tower, divides into the multichannel to dissolved air water all the way to interval through between the regulation and control water-locator has solved the bubble size and has been difficult to control, the not good scheduling problem of bubble release position, thereby is showing and improves the air supporting effect.
(2) This application attaches to water-locator and clear water collector on the guide rail to through the outer branch pipeline of hose connection air supporting tower, simplified the adjustment mode of interval between each water-locator and the clear water collector.
(3) The air floatation system has rich adjusting nodes, can adapt to the treatment requirements of various kinds of sewage, and has wide applicability.
Drawings
FIG. 1 is a schematic structural view of an air bearing system according to the present application.
Reference numbers in the figures: 1. the system comprises an air flotation tower, 11 guide rails, 12 sliding blocks, 13 first mixed liquid water distributors, 14 second gas-dissolved water distributors, 15 first gas-dissolved water distributors, 16 clean water collectors, 2 gas-dissolved devices, 3 conveying pipelines, 31 mixing pipelines, 311 third gas-dissolved water pipelines, 312 raw water pipes, 32 first gas-dissolved water pipelines, 33 second gas-dissolved water pipelines, 34 gas-dissolved water main pipeline pipes, 341 collecting nodes, 35 water collecting pipelines, 351 water return pipelines, 352 water outlet pipes, 353 flow dividing devices and 4 slag scraping machines.
Detailed Description
The present application is described in further detail below with reference to the attached drawings and the detailed description.
Referring to fig. 1, the air flotation system of the present application includes an air flotation tower 1, an air dissolving device 2, and a conveying pipeline 3 communicating the air flotation tower 1 and the air dissolving device 2, wherein the air flotation tower 1 is provided with at least two layers of water distributors connected to the conveying pipeline 3 from top to bottom, and the water distributor at the top layer is further connected to a raw water pipe 312 for inputting raw water; the bottom of the air-floating tower 1 is provided with a clear water collector 16, and the top of the air-floating tower 1 is provided with a slag scraper 4. Further, the delivery pipeline 3 includes branch pipelines corresponding to the water distributor and the clean water collector 16, the branch pipelines are respectively and fixedly connected to the side wall of the air flotation tower 1, and the water distributor and the clean water collector are respectively connected to the branch pipelines through hoses. The water distributor/clean water collector and the corresponding branch pipelines are connected through the hose, so that the position of the water distributor/clean water collector can be conveniently adjusted within a limited range, and the arrangement of the conveying pipeline 3 does not need to be adjusted in a complex manner.
The conveying pipeline 3 comprises a water collecting pipeline 35 connected with the clean water collector 16, and the water collecting pipeline 35 comprises a return water pipe 351 communicating the clean water collector 16 and the gas dissolving device 2, and a water outlet pipe 352 connected with the middle section of the return water pipe 351 through a flow dividing device 353. The clean water collector 16 should be spaced from the bottom of the air flotation column 1 by a distance, for example 0.3m, to avoid that suspended matter remaining in the raw water blocks the outlet of the water flow.
Preferably, a first mixed liquid water distributor 13 is arranged at the top layer of the air flotation tower 1, correspondingly, the conveying pipeline 3 comprises a mixing pipeline 31 connected with the first mixed liquid water distributor 13, and the mixing pipeline 31 comprises a third dissolved air water pipeline 311 communicating the first mixed liquid water distributor 13 with the air dissolving device 2, and a raw water pipe 312 merging into the third dissolved air water pipeline 311; preferably, the first mixed liquid water distributor 13 is arranged below the liquid level and is more than 0.2m away from the liquid level. Raw water and dissolved air water are input from the top of the air floatation tower 1, and flocs in the raw water and bubbles released by the dissolved air water are copolymerized and grow to form air-carrying flocs with larger size, which is beneficial to the air floatation effect.
Further, a first gas-dissolved water distributor 15 is arranged below the first mixed liquid water distributor 13, correspondingly, the conveying pipeline 3 includes a first gas-dissolved water pipeline 32 connected with the first gas-dissolved water distributor 15, and the first gas-dissolved water pipeline 32 and the third gas-dissolved water pipeline 311 converge to be connected with the gas dissolving device 2; as seen from the flow direction of the dissolved gas water, a main dissolved gas water pipeline 34 is arranged in the output pipeline of the dissolved gas device 2, a flow dividing device is arranged at the tail end of the main dissolved gas water pipeline 34, one path of dissolved gas water is divided into two paths of dissolved gas water which are respectively led into the first dissolved gas water pipeline 32 and the third dissolved gas water pipeline 311, and preferably, a flow dividing device is arranged at a collecting node 341 of the first dissolved gas water pipeline 32 and the third dissolved gas water pipeline 311 and is used for controlling the flow dividing flow rate or the flow dividing proportion of each path. Preferably, the distance between the first mixed liquid water distributor 13 and the first dissolved air water distributor 15 is preferably 0-5m, meanwhile, the distance between the first dissolved air water distributor 15 and the clean water collector 16 is greater than 0.1m, air bubbles released by the dissolved air water flowing out of the first dissolved air water distributor 15 flow towards the top of the air flotation tower 1, and at the moment, the air bubbles interact with raw water flowing out of the first mixed liquid water distributor 13 in a counter-flow manner, so that the treatment effect of the counter-flow air flotation system is achieved.
Furthermore, a second water distributor 14 for dissolved gas is disposed between the first mixed liquid water distributor 13 and the first water distributor 15 for dissolved gas, and correspondingly, the conveying pipeline 3 includes a second water pipeline 33 for dissolved gas connected to the second water distributor 14 for dissolved gas, and the second water pipeline 33 for dissolved gas and the third water pipeline 311 for dissolved gas are converged at the converging node 341 to be connected to the gas dissolving device 2. At this time, the gas-dissolved water main line 34 of the gas dissolving device 2 divides one path of gas-dissolved water into three paths of gas-dissolved water at the collecting node 341, and inputs the three paths of gas-dissolved water into the first gas-dissolved water line 32, the second gas-dissolved water line 33, and the third gas-dissolved water line 311, respectively, and the flow dividing device may be used to control the flow dividing rate or the flow dividing ratio of each path. In another possible implementation manner, the three gas-dissolved water pipelines can be independently or jointly decompressed to release bubbles, and decompression can be realized through a release head (or a valve on a pipeline) arranged on the water distributor.
Preferably, the distance between the first mixed liquid water distributor 15 and the second water distributor 14 for dissolved gas and water is greater than 0.1 m; the distance between the first mixed liquid water distributor 13 and the first dissolved gas water distributor 14 is within the range of 0-5 m. The setting of second dissolved water distributor 14 can increase the adjustable bubble of a batch property, intercepts partial flocculus above second dissolved water distributor 14 in advance for the second dissolves the water distributor and the first suspended solid concentration who dissolves between the water distributor reduces, is favorable to improving air supporting tower play water quality of water.
The distances between the first mixed liquid water distributor 13, the first dissolved gas water distributor 15, the second dissolved gas water distributor 14 and the clear water collector 16 relative to the top or the bottom of the air floatation tower 1 can be adjusted according to the physical and chemical properties of actual raw water and a treatment target, and the embodiment adopts the following mode to realize: guide rails 11 for attaching the water distributor and the clean water collector 16 are vertically arranged in the air floating tower 1, and the water distributor and the clean water collector 16 are respectively arranged on the guide rails 11 through sliding blocks 12 with locking structures. Referring to fig. 1, the two ends of the water distributor and the clean water collector 16 are respectively provided with the sliding blocks 12 with the locking structures, and the sliding blocks 12 are reversely buckled on the matched guide rails 11, so that the sliding blocks 12 can only translate under the limitation of the guide rails 11, that is, the water distributor and the clean water collector 16 can only translate up and down along the height direction of the air flotation tower 1, so as to realize the adjustment of the respective intervals.
The water distributor is selected from any one or more of a TV type water distributor, a TJ type water distributor, a perforated pipe water distributor and a microporous aeration disc; the gas dissolving device 2 is selected from any one or more of an air compressor gas dissolving device, a multiphase flow pump, an electrolysis gas dissolving device and a jet gas dissolving device. The three gas dissolving water pipelines can also provide gas dissolving water by one or more gas dissolving devices. Therefore, various adjusting modes of dissolved air water can be further generated, and adjusting nodes of the air floatation system are enriched.
According to the above arrangement of the air floating system, the air floating system is used as follows:
at least two layers of water distributors are arranged in an air floatation tower of the air floatation system from top to bottom, and the water distributors are connected with the same air dissolving device; preferably, three layers of water distributors are arranged in the air floatation tower, namely a first mixed liquid water distributor, a second water distributor for dissolved gas water and a first water distributor for dissolved gas water from top to bottom; a clear water collector is arranged at the bottom of the air floatation tower; the distance between the first mixed liquid water distributor and the second dissolved gas water distributor is more than 0.1 m; the distance between the first mixed liquid water distributor and the first dissolved gas water distributor is within the range of 0-5 m; the distance between the clear water collector and the first dissolved gas water distributor is more than 0.1 m;
raw water and dissolved gas water are simultaneously input through a first mixed liquid water distributor at the top layer;
and separating the water subjected to air floatation treatment by a clear water collector at the bottom, wherein part of the treated water flows back to the air floatation tower.
Further, for different application scenarios, at least one of the following adjustments is required:
adjusting the distance between each water distributor and the bottom of the air floatation tower or the liquid level to control the interaction time of the raw water and the dissolved air water;
adjusting the flow of each water distributor to control the air release amount of the water distributors; for a single water distributor, the control range of the flow or the air release amount can be 0 at the minimum, and the maximum can be the total amount of the dissolved air water and the raw water which are merged.
Adjusting the water outlet mode of each water distributor to control the state of bubbles generated by the water distributors; using different types of water distributors, wherein the water distributors are selected from any one or more of a TV type water distributor, a TJ type water distributor, a perforated pipe water distributor and a microporous aeration disc;
water distributors with different water outlet apertures are used;
water distributors with different densities of water outlet holes are used;
water distributors with different water outlet distribution directions are used.
And adjusting the reflux proportion returned to the air dissolving device after the raw water air floatation treatment so as to control the air dissolving water state and the system energy consumption.
The normal operation mode of the air floatation system is as follows: the raw water pipe and the third dissolved air water pipe are combined to form a mixing pipe, the mixing pipe releases a first mixed liquid through a first mixed liquid water distributor of the air flotation tower, and at the moment, part of flocs and part of bubbles in the first mixed liquid are copolymerized and grow. The first mixed liquid is released from the top of the floatation tower, and the treated water is discharged from the bottom of the floatation tower, so that the first mixed liquid flows from top to bottom, part of the flocs are carried by the bubbles to float to the liquid level, and part of the flocs continue to flow downwards. When the first mixed liquid continuously sinks, the first mixed liquid and the dissolved air water of the second dissolved air water pipeline released by the second dissolved air water distributor are fused into a second mixed liquid, part of flocs of the second mixed liquid are carried by bubbles to float to the liquid level, and part of flocs still continuously flow downwards along with the second mixed liquid. When the second mixed liquid continuously sinks, the first mixed liquid meets the condition that the first gas-dissolved water distributor releases gas-dissolved water in the first gas-dissolved water pipeline, the second mixed liquid and the gas-dissolved water in the first gas-dissolved water pipeline are fused into a third mixed liquid, part of flocs of the third mixed liquid are carried by bubbles to float to the liquid level, and part of the flocs continuously sink. The interaction of the flocs and the bubbles forms a suspension layer, which is generally between the first mixed liquor water distributor and the first dissolved gas water distributor. The suspension layer has the functions of continuously intercepting flocs from top to bottom and bubbles from bottom to top, continuously combining the flocs and the floating bubbles in the suspension layer and then floating to the liquid level, and the whole body is in dynamic balance when the operation is stable. The third mixed liquid finally enters the clean water collector at the bottommost part. After the clear water collector collects clear water, part of the clear water is discharged out of the whole air floatation system, and part of the clear water flows back to the air dissolving device. During the whole reaction process, the scum scraper continuously removes scum on the liquid level.
The air floatation system can adjust the distribution proportion of the water amount of the three strands of dissolved air water, the pressure of the dissolved air water, the positions of the three water distributors and the position of the clear water collector, thereby being suitable for raw water with different water qualities and water outlet indexes with different standards. According to different distribution proportions, the triple outgas can be converted into double outgas and one double outgas in a special operation mode. The alternative modes of the air floatation system are as follows: 1. the first water distributor for dissolved gas water, the second water distributor for dissolved gas water and the first mixed liquid water distributor release dissolved gas water together; 2. the first water distributor for dissolved gas and the second water distributor for dissolved gas release gas water together; 3. the first water distributor for dissolved gas and the first mixed liquid water distributor release dissolved gas water together; 4. the second water distributor for dissolved gas and the first mixed liquid water distributor release dissolved gas water together; 5. the first water distributor for water-soluble gas independently releases all water-soluble gas; 6. the second water distributor for water-soluble gas independently releases all water-soluble gas; 7. the first mixed liquid water distributor releases all the dissolved air water independently. Similarly, by adding the water distributor, quadruple outgas and more than quadruple outgas can be realized, but in terms of practical application scenarios, triple outgas can basically meet the requirements.
The design that the triple air release and water distributor can slide up and down can form bubbles with different sizes at different positions in the air floatation tower. According to the theory of air flotation, the smaller the air bubble, the easier the air bubble and the floc to form air-carrying floc, and the smaller the buoyancy. The larger the bubble, the greater the buoyancy, but the more difficult it is to bond with the flocs. On the basis, three batches of bubbles with size gradients are formed by triple air release and proper adjustment of the positions of the three water distributors and the clear water collector, small bubbles are tightly combined with flocs, large bubbles are used for providing buoyancy, and medium bubbles can be combined with the flocs and provide certain buoyancy, so that a better air floatation effect is obtained.
The method of use and the treatment effect of the air flotation system of the present application are further illustrated below with reference to examples.
Example 1
The air floatation system device is used for treating the effluent of a secondary sedimentation tank of a certain municipal sewage plant, and the ss (suspended solid concentration) of the effluent is 40 mg/L. The effluent of the secondary sedimentation tank enters a coagulation tank, PAC (polyaluminium chloride) and PAM (polyacrylamide) liquid medicine is added to ensure that the PAC concentration is 5mg/L and the PAM concentration is 0.2mg/L, and the effluent enters an air flotation tower after coagulation for 10 min. The section of the stainless steel air flotation tower is square, the size is 1m x 1m, the height is 3m, and the treatment capacity is 8m3The reflux ratio was 50%. The first mixed liquid water distributor, the first dissolved air water distributor, the second dissolved air water distributor and the clear water collecting pipe are all made of a V-shaped perforated PVC pipe. Each water distributor has 16 water outlet holes.The water outlet of the first mixed liquid water distributor faces downwards, the aperture of the water outlet is 15mm, the water outlets of the first water-soluble water distributor and the second water-soluble water distributor face upwards, and the diameter of the water outlets is 10 mm. The air-floating tower 1 is respectively provided with a chain type slag scraper, a first mixed liquid water distributor, a second water distributor for dissolved gas water, a first water distributor for dissolved gas water and a clear water collector from top to bottom. The German Eldule multiphase flow pump is used as a gas dissolving device with the flow rate of 4m3The reflux water per hour is used for dissolving gas to form a flow of 4m3The main dissolved gas water path is/h. The main path of the dissolved gas water is divided into three parts with the flow of 2m3The flow rate of the first dissolved air water pipeline is 1m3The flow rate of the second dissolved air water pipeline is 1m3A third dissolved air water line of/h. The specific operation method comprises the following steps: the raw water pipe and the third dissolved air water pipeline are combined into a mixing pipeline, the mixing pipeline is finally released through the first mixed liquid water distributor and enters the air floatation tower, meanwhile, the second dissolved air water distributor releases the dissolved air water of the second dissolved air water pipeline, the first dissolved air water distributor releases the dissolved air water of the first dissolved air water pipeline, the clear water collector collects clear water and then discharges the clear water through a clear water pipe, and the clear water pipe is divided into a water outlet pipe and a water return pipe. The first mixed liquid water distributor, the second dissolved gas water distributor, the first dissolved gas water distributor and the clear water collector move up and down through the guide rails to debug the effect. And finally, determining the optimal working condition, wherein the first mixed liquid water distributor is 2.6m high, the second dissolved gas water distributor is 2.4m high, the first dissolved gas water distributor is 0.6m high, and the clear water collector is 0.3m high by taking the bottom of the air flotation tower as a reference. After the operation is carried out in the way, the final effluent ss is stabilized below 5 mg/L.
Example 2
The air floatation system is used for treating the wastewater of a certain paper mill, and the wastewater ss fluctuates between 350 and 450 mg/L. The section of the air floatation tower is circular, the diameter is 4m, the height is 3m, and the treatment capacity is 70m3H, reflux ratio 60%. The air floatation tower is respectively provided with a planetary slag scraper, a first mixed liquid water distributor, a second dissolved gas water distributor, a first dissolved gas water distributor and a clear water collector from top to bottom. The first mixed liquid water distributor is an eight-claw stainless steel water distributor, and the first water distributor for dissolved gas and the second water distributor for dissolved gas are TV-type water distributors. The reflux ratio is 60%, and the flow of the reflux water pipe is 42m3H, using three air pressuresThe machine and the three dissolved air tanks are used as air dissolving devices to respectively dissolve return water, the air dissolving water of the first air compressor and the first dissolved air tank is output to a first air dissolving water pipeline, and the flow rate is 16.8m3Perh, accounting for 40 percent of the total amount of the dissolved gas water; the dissolved air water of the second air compressor and the second dissolved air tank is output to a second dissolved air water pipeline with the flow of 21m3H is 50% of the total amount of the dissolved gas water, the dissolved gas water of the third air compressor and the third dissolved gas tank is output to a third dissolved gas water pipeline, and the flow rate is 4.2m3The volume of the water per hour is 10 percent of the total volume of the dissolved gas water. The specific operation method comprises the following steps: and combining the raw water pipe and the third dissolved air water pipe into a mixing pipeline, and adding medicines into the mixing pipeline to ensure that the PAC concentration of the first mixed solution is 50mg/L and the PAM concentration is 1 mg/L. The first mixed liquid of the mixing pipeline is released into the air floatation tower through the first mixed liquid water distributor, the second gas-dissolved water distributor releases gas-dissolved water of the second gas-dissolved water pipeline, the first gas-dissolved water distributor releases gas-dissolved water of the first gas-dissolved water pipeline, the clear water collector collects clear water and then discharges the clear water through the clear water pipe, and the clear water pipe is divided into a water outlet pipe and return water. The optimal arrangement positions of the water distributor and the clear water collector are determined through debugging, the first mixed liquid water distributor is 3.5m high, the second dissolved gas water distributor is 3.4m high, the first dissolved gas water distributor is 0.5m high, and the clear water collector is 0.3m high by taking the bottom of the air floatation tower as a reference. After the operation is carried out in the mode, the final effluent ss is stabilized below 10 mg/L.
From the embodiment 1 and the embodiment 2, the air floatation system has wide applicability, can treat domestic sewage, has quite ideal treatment effect on industrial sewage, and has wide application prospect.
To sum up, this application air supporting system utilizes and dissolves the gas device and produce three strands of dissolved air water, is released into the air supporting tower by three water-locator respectively, and three water-locator and clear water collector can reciprocate at the air supporting tower through the guide rail moreover. The system has the characteristics of good effluent quality, stable treatment effect, small occupied area, high adjustment freedom degree and the like.
The above embodiments are only preferred embodiments of the present application, but not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present application should be construed as equivalents and are included in the scope of the present application.
Claims (8)
1. An air floatation system is characterized by comprising an air floatation tower, an air dissolving device and a conveying pipeline communicated with the air floatation tower and the air dissolving device, wherein the air floatation tower is provided with at least two layers of water distributors connected with the conveying pipeline from top to bottom, and the water distributor at the top layer is also connected with a raw water pipe for inputting raw water; and a clear water collector is arranged at the bottom of the air floating tower.
2. The system of claim 1, wherein guide rails are vertically arranged inside the air flotation tower, and the water distributor and the clean water collector are attached to the guide rails and are respectively arranged on the guide rails through sliding blocks with locking structures.
3. The system of claim 1 or 2, wherein the delivery pipeline comprises branch pipelines corresponding to the water distributor and the clean water collector respectively, the branch pipelines are fixedly connected to the side wall of the air flotation tower respectively, and the water distributor and the clean water collector are connected with the corresponding branch pipelines through hoses respectively.
4. The system of claim 3, wherein the delivery line comprises a water collection line connected to the clean water collector, the water collection line comprising a return water pipe communicating the clean water collector and the air dissolving device, and an outlet pipe connected to a middle section of the return water pipe via a flow splitting device.
5. The system of claim 3, wherein the top layer of the air flotation tower is provided with a first mixed liquid water distributor, the conveying pipeline comprises a mixing pipeline connected with the first mixed liquid water distributor, the mixing pipeline comprises a third dissolved air water pipeline communicated with the first mixed liquid water distributor and an air dissolving device, and a raw water pipe merged into the third dissolved air water pipeline; the first mixed liquid water distributor is arranged below the liquid level and is more than 0.2m away from the liquid level.
6. The system of claim 5, wherein a first water distributor for dissolved gas is disposed below the first mixed liquid water distributor, the delivery pipeline comprises a first water pipeline for dissolved gas connected to the first water distributor for dissolved gas, and the first water pipeline for dissolved gas is connected to the gas dissolving device; alternatively, the first and second electrodes may be,
a second gas-dissolved water distributor is arranged between the first mixed liquid water distributor and the first gas-dissolved water distributor, the conveying pipeline comprises a second gas-dissolved water pipeline connected with the second gas-dissolved water distributor, and the second gas-dissolved water pipeline is connected with the gas dissolving device;
wherein the distance between the first mixed liquid water distributor and the second water distributor for dissolved gas water is more than 0.1 m; the distance between the first mixed liquid water distributor and the first dissolved gas water distributor is within the range of 0-5 m; the distance between the clear water collector and the first water distributor for dissolved gas is more than 0.1 m.
7. The system of claim 6, wherein the first, second, and third dissolved water lines define a collection node having a flow splitting device.
8. The system of claim 1, wherein the water distributor is selected from any one or more of a TV type water distributor, a TJ type water distributor, a perforated pipe water distributor, and a micro-porous aeration tray; the air dissolving device is selected from any one of an air compressor air dissolving device, a multiphase flow pump, an electrolysis air dissolving device and a jet air dissolving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120192733.5U CN214653773U (en) | 2021-01-22 | 2021-01-22 | Air floatation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120192733.5U CN214653773U (en) | 2021-01-22 | 2021-01-22 | Air floatation system |
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| CN214653773U true CN214653773U (en) | 2021-11-09 |
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2021
- 2021-01-22 CN CN202120192733.5U patent/CN214653773U/en active Active
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