![]() How does a wastewater treatment lagoon work? Naturally, it depends on seasonal factors including temperature. The oxygen in aerated lagoons could be controlled technically by mechanical technologies. The latter also contains an intermediate anoxic layer where the oxygen level varies from the highest level at the top to an anerobic zone at the bottom. The top layer contains dissolved oxygen in both aerated and facultative lagoons. Oxygen levels in aerated and facultative lagoons Facultative lagoons are used for treating low to medium strength wastewater from municipal and industrial sources.īoth aerated and facultative lagoons contain algae which are essential for treating the wastewater in the lagoon. However, aerobic lagoons are more common and they could be fully aerated or partially aerated (also known as facultative lagoons). Wastewater treatment lagoons could be aerated or anaerobic lagoons depending on the type of wastes they are designed to treat.Īnaerobic lagoons mostly treat animal wastes from farms. Types of lagoons: Aerated and facultative These lagoon systems (84%) serve small communities comprising less than 3,000 people. The EPA identified a total of 4,657 discharging lagoon systems in 2022 of which 83% were identified as publicly owned treatment works. Wastewater treatment lagoons are also used by industrial and commercial facilities as a component of their wastewater treatment facilities. They are used by some rural communities due to their lower maintenance requirements and higher energy efficiency compared to other wastewater treatment options. Additional information regarding NYS DEC’s SPDES Program, including online data in various formats, is available at wastewater treatment lagoon is an earthen pond where wastewater is treated via natural and biochemical processes. Data is routinely updated based on the data collection methodology, and this dataset will be updated monthly. The SPDES database contains the following data on each permit: ownership, effective dates, locations, and receiving waters. Each municipal wastewater treatment plant (WWTP) must operate under an individual SPDES permit that defines the parameters under which it is allowed to discharge to the waters of New York State. Under New York State law the program is broader in scope than that required by the Clean Water Act in that it controls point source discharges to groundwaters as well as surface waters. ![]() The New York State Pollutant Discharge Elimination System (SPDES) has been approved by the United States Environmental Protection Agency for the control of wastewater and stormwater discharges in accordance with the Clean Water Act. Additional information regarding NYS DEC’s SPDES Program, including online data in various formats, is available at Expand ![]()
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