| Other author/creator | Ginn, Thomas C. |
| Other author/creator | Lorenzen, Marc W. |
| Other author/creator | United States. Environmental Protection Agency. Office of Water Regulations and Standards. Criteria & Standards Division. |
| Other author/creator | Corvallis Environmental Research Laboratory. |
| Other author/creator | Tetra Tech, Inc. |
| Summary |
Artificial circulation and hypolimnetic aeration are management techniques for oxygenating eutrophic lakes subject to water quality problems, algal blooms, and fishkills. Artificial circulation is achieved by injecting diffused air into lower waters, by mechanical pumping of water from one depth stratum to another, or by inducing turbulence at the surface using large axial-flow pumps. In contrast, hypolimnetic aeration by air or oxygen injection affects primarily bottom waters. In some instances low dissolved oxygen concentrations persist in the metalimnion. In general, both methods lower the concentrations of reduced compounds in lake waters, providing benefits for water supply systems. Aeration may cause supersaturation of nitrogen gas, thereby raising the potential danger of gas bubble disease in downstream fishes. |
| General note | "Tetra Tech, inc." |
| General note | "Research and development, evaluation of aeration circulation as a lake restoration technique"--Cover. |
| General note | "Prepared for Office of Water Regulations and Standards, Criteria and Standards Division"--Cover. |
| General note | "Prepared by Environmental Research Laboratory, Office of Research and Development"--Cover. |
| General note | "February 1981." |
| General note | "R 80-56-72." |
| General note | "EPA-600/3-81-014." |
| General note | "Project Officer: Spencer A. Peterson." |
| Bibliography note | Includes bibliographical references (p. 48-58). |
| Technical rpt number | EPA-600/3-81-014 |
| GPO item number | 431-I-11 |
| Govt. docs number |
EP 1.23:600/3-81-014 |
