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Summary
| Description | English: View of a nitrification process tank at a sewage treatment plant. |
| Date | |
| Source | U.S. Environmental Protection Agency (EPA), "Primer for Municipal Wastewater Treatment Systems." EPA 832-R-04-001. p. 18. |
| Author | U.S. Environmental Protection Agency, Washington, D.C. |
Licensing
 | This image (or other media) is a work of an Environmental Protection Agency employee, taken or made as part of that person's official duties. As works of the U.S. federal government, all EPA images are in the public domain. |  |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:53, 4 May 2020 | | 555 × 361 (36 KB) | Moreau1 | {{Information |Description={{en|1=View of a {{w|nitrification}} process tank at a sewage treatment plant.}} |Source=U.S. Environmental Protection Agency (EPA), [https://www.epa.gov/npdes/npdes-resources "Primer for Municipal Wastewater Treatment Systems."] EPA 832-R-04-001. p. 18. |Date=September 2004 |Author=U.S. Environmental Protection Agency, Washington, D.C. |other_versions= }} =={{int:license-header}}== {{PD-USGov-EPA}} Category:Publications by the Environmental Protection Agency... |
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