| Includes | equipment for diffusing air or gas into water and wastewater. Mechanical aerators, diffusers, and other diffusion equipment used in the activated sludge process and other aeration applications. |
| Notes | tanks in which air and gas diffusion equipment are installed are typically under the Division of the associated tank material or work result (such as Division 03, Concrete), or in 43 40 00, Gas and Liquid Storage, or any other appropriate Division. |
| See | 31 35 00 for earthmoving and slope protection associated with aerated ponds and treatment lagoons. 40 05 00 and 40 10 00 for piping and valves used for conveying low-pressure air, gas, and vapors. 40 90 00 for process controls, and flow metering of air and pure-oxygen, and dissolved oxygen measurement instrumentation. 43 11 00 for blowers and intake filters. 43 12 00 for pure-oxygen compressors and related equipment. 43 13 00 for gas process equipment. 43 22 13 for liquid aeration devices for industrial processes. 43 42 00 for pressurized storage tanks suitable for pure-oxygen. 46 31 56 for liquid oxygen storage and feed equipment. 46 41 21 for jet mixing equipment. |