First, the range of applications
Air Flotation is widely used in water supply and drainage treatment works. First applied to the water plant, water treatment, water on the lake water algaecide Jiangzhuo. Second, used in industrial sewage treatment works, such as petrochemical, textile, printing and dyeing, electroplating, system section, food industry and other fields. Third, applied to the recovery of useful substances in the sewage, such as: paper, pulp-water fiber recovery and other fields.
Two main features:
> Compact, small footprint
> Design, power consumption province
> High efficiency of dissolved air
> Deal with the effect of stability, machinery and instruments to achieve integrated control
> Easy to operate, simple to maintain
Third, the principle
Air Flotation device structure shown in Figure 1.
Original water pipe through the pump into the center of flotation device with rotatable hydraulic joints and rotatable distribution pipe 5 evenly into the bottom of the flotation tank, the dissolved gas water through the central tube 7 into the rotation of the distribution pipe 8 synchronization with the raw water into the bottom of the flotation tank. 9 is also a rotatable hydraulic connector. Full of micro-bubbles of dissolved air water and raw water at the bottom of the flotation device, the full collision, adhesion and the formation of the proportion of <1, the scum rise to the surface is removed so that the particles of the raw water. Raw water distribution pipe 5 and dissolved gas water distribution pipe is fixed on the same rotating device 10, the rotation direction of raw water into the bottom of the flotation tank of water in the opposite direction, but the speed is equal. A key part of the device is successfully used the principle of "zero speed", so that water does not produce disturbances of the raw water, the solid-liquid separation in a static. Scum layer formed on the surface of from spiral skimming device 11 to collect, and then discharged to the outside the pool after slagging tube 12. By a rotating set of pipes 13, the clarified water to collect the back to the pool, collecting pipes 13 with the central rotating section 14 together, so that the raw water in the residence time of the flotation pool is the central rotating part of the rotation cycle.
Even in the running gear on the rotating scraper will scrape the silt on the bottom and the wall hopper 6, regular emissions.
Another important improvement is fixed in rotation to walk between them on the rack 10 of a certain pitch a group of concentric conical plate device 15, with part of the water distribution along the synchronous rotation of the flotation tank. Each adjacent two conical plate composed of a tilted ring flotation region 16, the area within the water, always in a state of laminar flow, and accelerate the rate of increase of the particulate impurities with micro-bubbles.
Air Flotation unit also includes one pair of parallel operation of dissolving the trachea 20 (referred to as the ADT'S), low pressure into the pump 17, only 202.6 kPa, Water first through the three-way valve connected with the two ADT'S 18'S the other end of the ADT layout dissolved air outlet. Compressed air has also been a three-way valve 19 and pressure of water at the same end into the ADT'S compressed air pressure is 707.8 kPa. All of the three-way valve linkage rely on a regulator, when the normal operation of an ADT into the outlet are open to release the dissolved gas water inlet is turned off; another ADT inlet and outlet is closed, the compressed air to enter through the porous stainless steel plate of 20 to 40 μm in the ADT, and rely on air pressure, air dissolved in water, rather than the pressure of the water. ADT, high-speed access to water along the tangential direction, the flow rate of up to 10 m / s, pressure water to spiral forward in the ADT, up to 995 r / min, the inlet can be adjusted to control the volume and flow.
Fourth, the shallow air flotation and conventional flotation device
① traditional flotation devices, pool depth is generally 2.0 ~ 2.5 m, this is because the device is stationary, the water body is in motion. Water from the reaction chamber into the contact zone will produce the change of flow direction and flow redistribution, which flow into a uniform upward flow, which requires a certain amount of time and height to accomplish this change, its height is generally not low at 1.5 m. Air Flotation due to the application of the "zero speed" principle, to achieve equipment, sports, water is stationary, eliminating due to the disturbance of the water of suspended particles and water separation, reducing the height requirements; conventional flotation device, it is inevitable silt or floc particles sinking to the bottom with the bottom of the sediment, to prevent the outlet pipe is generally suspended high 300 mm in the shallow flotation device, because the bottom set the scraper device, eliminating the need to set up hanging high segment. Through the above analysis, the effective depth of the shallow flotation device is generally 400 to 500 mm.
(2) traditional flotation devices, water residence time is generally controlled at 10 for 20 min; Air Flotation devices, the residence time of only 4 for 6 min.
③ The traditional flotation device, the dissolved air system is equipped with a dissolved gas cylinders by the actual volume of dissolved gas cylinders, hydraulic retention time was 2 for 4 min; Air Flotation devices, dissolved air system uses dissolved trachea, the abolition of the filler, volumetric rate of 99.99% dissolution of the trachea, the hydraulic retention time is only 10 ~ 15 s.
④ In the traditional flotation devices, scraping slag scum layer on a regular basis to clear, can not be selective clean up the scum float time, not only for a large disturbance of the water body, and the scum of the moisture content also larger spiral skimmer installed in front of water distribution system, remove the scum always flotation pool float the longest time (4 ~ 6 min); Air Flotation devices, the scum, namely solid liquid separation is the most thorough, the minimum moisture content of the dross.
, Specifications and main technical parameters
Air Flotation is widely used in water supply and drainage treatment works. First applied to the water plant, water treatment, water on the lake water algaecide Jiangzhuo. Second, used in industrial sewage treatment works, such as petrochemical, textile, printing and dyeing, electroplating, system section, food industry and other fields. Third, applied to the recovery of useful substances in the sewage, such as: paper, pulp-water fiber recovery and other fields.
Two main features:
> Compact, small footprint
> Design, power consumption province
> High efficiency of dissolved air
> Deal with the effect of stability, machinery and instruments to achieve integrated control
> Easy to operate, simple to maintain
Third, the principle
Air Flotation device structure shown in Figure 1.
Original water pipe through the pump into the center of flotation device with rotatable hydraulic joints and rotatable distribution pipe 5 evenly into the bottom of the flotation tank, the dissolved gas water through the central tube 7 into the rotation of the distribution pipe 8 synchronization with the raw water into the bottom of the flotation tank. 9 is also a rotatable hydraulic connector. Full of micro-bubbles of dissolved air water and raw water at the bottom of the flotation device, the full collision, adhesion and the formation of the proportion of <1, the scum rise to the surface is removed so that the particles of the raw water. Raw water distribution pipe 5 and dissolved gas water distribution pipe is fixed on the same rotating device 10, the rotation direction of raw water into the bottom of the flotation tank of water in the opposite direction, but the speed is equal. A key part of the device is successfully used the principle of "zero speed", so that water does not produce disturbances of the raw water, the solid-liquid separation in a static. Scum layer formed on the surface of from spiral skimming device 11 to collect, and then discharged to the outside the pool after slagging tube 12. By a rotating set of pipes 13, the clarified water to collect the back to the pool, collecting pipes 13 with the central rotating section 14 together, so that the raw water in the residence time of the flotation pool is the central rotating part of the rotation cycle.
Even in the running gear on the rotating scraper will scrape the silt on the bottom and the wall hopper 6, regular emissions.
Another important improvement is fixed in rotation to walk between them on the rack 10 of a certain pitch a group of concentric conical plate device 15, with part of the water distribution along the synchronous rotation of the flotation tank. Each adjacent two conical plate composed of a tilted ring flotation region 16, the area within the water, always in a state of laminar flow, and accelerate the rate of increase of the particulate impurities with micro-bubbles.
Air Flotation unit also includes one pair of parallel operation of dissolving the trachea 20 (referred to as the ADT'S), low pressure into the pump 17, only 202.6 kPa, Water first through the three-way valve connected with the two ADT'S 18'S the other end of the ADT layout dissolved air outlet. Compressed air has also been a three-way valve 19 and pressure of water at the same end into the ADT'S compressed air pressure is 707.8 kPa. All of the three-way valve linkage rely on a regulator, when the normal operation of an ADT into the outlet are open to release the dissolved gas water inlet is turned off; another ADT inlet and outlet is closed, the compressed air to enter through the porous stainless steel plate of 20 to 40 μm in the ADT, and rely on air pressure, air dissolved in water, rather than the pressure of the water. ADT, high-speed access to water along the tangential direction, the flow rate of up to 10 m / s, pressure water to spiral forward in the ADT, up to 995 r / min, the inlet can be adjusted to control the volume and flow.
Fourth, the shallow air flotation and conventional flotation device
① traditional flotation devices, pool depth is generally 2.0 ~ 2.5 m, this is because the device is stationary, the water body is in motion. Water from the reaction chamber into the contact zone will produce the change of flow direction and flow redistribution, which flow into a uniform upward flow, which requires a certain amount of time and height to accomplish this change, its height is generally not low at 1.5 m. Air Flotation due to the application of the "zero speed" principle, to achieve equipment, sports, water is stationary, eliminating due to the disturbance of the water of suspended particles and water separation, reducing the height requirements; conventional flotation device, it is inevitable silt or floc particles sinking to the bottom with the bottom of the sediment, to prevent the outlet pipe is generally suspended high 300 mm in the shallow flotation device, because the bottom set the scraper device, eliminating the need to set up hanging high segment. Through the above analysis, the effective depth of the shallow flotation device is generally 400 to 500 mm.
(2) traditional flotation devices, water residence time is generally controlled at 10 for 20 min; Air Flotation devices, the residence time of only 4 for 6 min.
③ The traditional flotation device, the dissolved air system is equipped with a dissolved gas cylinders by the actual volume of dissolved gas cylinders, hydraulic retention time was 2 for 4 min; Air Flotation devices, dissolved air system uses dissolved trachea, the abolition of the filler, volumetric rate of 99.99% dissolution of the trachea, the hydraulic retention time is only 10 ~ 15 s.
④ In the traditional flotation devices, scraping slag scum layer on a regular basis to clear, can not be selective clean up the scum float time, not only for a large disturbance of the water body, and the scum of the moisture content also larger spiral skimmer installed in front of water distribution system, remove the scum always flotation pool float the longest time (4 ~ 6 min); Air Flotation devices, the scum, namely solid liquid separation is the most thorough, the minimum moisture content of the dross.
, Specifications and main technical parameters
|
型号规格
|
ZCQJ
-10
|
ZCQJ
-20
|
ZCQJ
-50
|
ZCQJ
-80
|
ZCQJ
-100
|
ZCQJ
-120
|
ZCQJ
-200
|
ZCQJ
-250
|
ZCQJ
-300
|
|
处理水量(m3/h）
|
10
|
20
|
50
|
80
|
100
|
120
|
200
|
250
|
300
|
|
外形尺寸
Q×Ø（mm）
|
1800×
1200
|
2200×
1200
|
3400×
1440
|
4300×
1440
|
4800×
1440
|
5400×
1520
|
6800×
1520
|
8000×
1600
|
8400×
1600
|
|
气浮池直径Ø（mm）
|
1800
|
2200
|
3400
|
4300
|
4800
|
6000
|
6500
|
8000
|
8400
|
|
有效水深（mm）
|
400
|
450
|
500
|
||||||
|
停留时间（min）
|
4~6
|
||||||||
|
驱动方式
|
中心传动
|
周边传动
|
|||||||
|
驱动功率（KW）
|
0.55
|
0.75
|
1.1
|
1.5
|
|||||
|
进水管直径（mm）
|
32
|
65
|
65
|
80
|
80
|
80
|
125
|
150
|
150
|
|
出水管直径（mm）
|
65
|
80
|
125
|
150
|
150
|
200
|
300
|
300
|
350
|
|
排水管直径（mm）
|
80
|
80
|
125
|
125
|
150
|
150
|
200
|
250
|
250
|
|
运行重量（KG）
|
3200
|
4200
|
8800
|
15200
|
20000
|
22800
|
45000
|
49800
|
58400
|
