Gas distributor esp. for waste water aeration - has porous gas ejector body of specified pore vol. contg. cavern-like pores with reduced cross=sectional area at outer surface of body

摘要

Appts. for gas distribution into a liq., esp. for waste water aeration in waste water treatment plants, has a porous gas ejector body made of plastics, the body has a pore vol. of 20-40% and that the pores have a cavern-like form with a reduced cross-sectional area at the outer surface of the body. Pref. the body is made of a hardened and/or polymerised plastics, pref. polymethyl methacrylate. ADVANTAGE - The body consists of a one-piece body of any desired size and shape and its pores are not blocked even by fine solids.