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Kunshan Pinhong EPT Co.,Ltd
Kunshan Pinhong EPT Co.,Ltd
Add : (Qiandeng Yuanchuang Base) No. 125, Jinxing South Road, Qiandeng Town, Kunshan, Jiangsu, China
Tel : （0086）15995617314
Fax : +86-512-50130524
E-mail :lvfang@ksphxs.com
Air enters the aeration tube from the vent hole on the back cover of the microbubble aeration tube, and the tube wall is densely covered with many small pores. Under the action of the pressure difference, the air in the pipe diffuses from the pores of the pipe wall, forming many tiny bubbles in the sewage, causing water turbulence, so as to achieve the purpose of dissolving the oxygen in the air into water.
There are many types of microporous aeration pipes, currently there are two commonly used: one is the ordinary aeration pipe sintered from coarse porcelain or corundum, which produces many tiny pores during the sintering process. Its main feature is that it can It produces tiny bubbles with a diameter of about 0.1 ~ 0.2 mm. The gas-liquid contact area is large, and the oxygen utilization rate is high, generally up to 20 ~ 25%. The disadvantage is that the air pressure loss is large, easy to block, and the intake air needs to be filtered and easily damaged. Once damaged, the oxygen utilization rate begins to drop rapidly.
The other is a tubular diaphragm microporous aeration tube. The installation method of this aeration pipe is basically the same as the previous one, but its own structure is very different. It uses pipes made of ABS or UPVC as the air distribution pipe, and ventilation holes are provided on the pipe wall. The outer circumference of the air distribution pipe is covered with a diaphragm made of synthetic rubber, and the diaphragm is fixed on the pipe by a metal clamp. Use laser and other methods to make evenly distributed holes in the synthetic rubber diaphragm.
During aeration, air enters between the diaphragm and the tube wall through the ventilation holes on the tube wall. Under the action of compressed air, the diaphragm slightly bulges and the holes open, so as to achieve the purpose of air distribution and diffusion.
When the air supply is stopped and the air pressure disappears, the diaphragm itself automatically closes the hole under the action of elasticity, and the diaphragm is pressed against the pipe wall under the action of water pressure. Therefore, the sewage will not flow back and block the hole. However, since the opening diameter of the diaphragm directly affects the utilization rate of oxygen, the opening diameter should be appropriate.