Tubular fine bubble diffuser are mainly used for aeration in urban sewage treatment and organic industrial wastewater treatment. Tubular fine bubble diffuser have simple structure, high oxygen utilization, reliable performance, not easy to block pores, long life, convenient installation and maintenance, and system price Notable features such as low cost. The tubular fine bubble diffuser is composed of three parts: aeration diaphragm, air pipe and support pipe. The aeration diaphragm [2] is made of composite, EPDM and silicone rubber, which has heat resistance, acid and alkali resistance, good chemical stability, and has a longer service life than ordinary rubber. The air pipe is made of engineering plastic ABS, which is hollow and filled with water, which greatly reduces the buoyancy of the aeration system in the water.www.khnwatertreatment.com