The variable hole aeration hose is made of reinforced PVC and rubber, and the inside of the hose is lined with chemical fiber mesh wire, which is acid-resistant, alkali-resistant, corrosion-resistant, colorless, odorless, and oil-free, overcoming high pressure strength.

The hose is aerated with an inner wall diameter of 62.5 mm and 65 mm. Performance characteristics and advantages: 1. The wall thickness of the hose is only 2mm, the airway is short and straight, the air pressure loss is small, the inner and outer surface of the hose is smooth, and no biofilm is attached; Round pipes are not prone to dirt accumulation. 2. The hose is swollen when aerated and flattened when it is not aerated and the variable hole is closed when flattened, so the time to stop aeration will not be blocked. It can effectively prevent sewage backflow during intermittent operation.

The equipment has a small diameter of aeration bubbles, a large gas-liquid interface, uniform dispersion of bubbles, not easy to cause hole blockage, strong corrosion resistance, and the aerator is unusual for urban sewage, large-scale factories, new construction, expansion and renovation of old aeration tanks, and the aeration tank can operate intermittently.