The Biology and Troubleshooting of Facultative Lagoons by Michael H. Gerardi, Brittany Lytle

By Michael H. Gerardi, Brittany Lytle

Presents group of workers a brand new figuring out of the way lagoon and glued movie sewage therapy platforms work

  • Tested in short-course occasions by way of the writer over the past 20 years
  • Directs the material in a pragmatic manner at operators who're answerable for procedure keep an eye on and troubleshooting
  • Reduces the jargon, chemical equations, and kinetics that weigh down such a lot operators and laboratory technicians
  • Provides precious details for knowing organic and chemical stipulations on the remedy process

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Extra info for The Biology and Troubleshooting of Facultative Lagoons

Example text

Soluble organic molecules (scBOD or CH2O) are found in domestic wastewater and are produced in a lagoon through hydrolysis. scBOD is the only form of cBOD that can be degraded through microbial activity. 13). 13) The use of an organic molecule (CH2O) to degrade cBOD is mixed acid production. 5). 7). During mixed acid production, a variety or mixture of acids is produced. Many of these compounds are odorous, and some stimulate the growth of some filamentous organisms. Some of these compounds serve as the energy and carbon substrate for methanogens.

When lagoons are in parallel, more than one lagoon receives influent wastewater. Because microbial activity becomes sluggish during cold temperatures, parallel lagoons are commonly used in temperate regions to accommodate overloading conditions and the formation of ice cover. 5). 5 Recirculation in a multistage lagoon system. In a multistage lagoon system that is operated in either parallel or series mode, effluent containing dissolved oxygen from a downstream lagoon may be recirculated to the influent of an upstream lagoon to provide additional dissolved oxygen to the upstream lagoon to control or prevent odor production and improved treatment efficiency.

In very dry climates where evaporation or rate of groundwater percolation exceeds rainfall or the rate of influent, there is no discharge. Effluent that is land‐applied is an example of indirect discharge. Other examples include groundwater recharge and the production of snow. Effluent is not discharged to a receiving body of water. Hydrographic controlled discharge is used for lagoons that discharge directly to a surface water. Instrumentation is used to measure the level and quality of wastewater to be discharged and the surface water as well as the rate of flow of the surface water to identify the most favorable conditions or times for discharge.

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