Sludge evaporation lagoons

Sludge Evaporation Lagoons (Sludge Drying Lagoons)... 

Natural Sludge Evaporation Lagoons and Evaporation Process Reactor... 

The sludge evaporation lagoon (Fig. 1) may be described as an open holding facility which depends solely on eliminating conditions such as evaporation, precipitation, temperature, humidity, and wind velocity to effect dissipation (evaporation) of on-site wastewater. Individual lagoons may be considered an alternate means of wastewater disposal on individual pieces of property. The basic impetus to consider this system is to allow building and other land uses on properties, which have soil conditions not conducive to the workability and acceptabiUty of the traditional on-site drainfield or leachhed disposal systems (1-3). 

The advantages of using sludge evaporation lagoons (or sludge drying lagoons) are... 

Although the sludge evaporation lagoon process is also called a sludge drying process, there is a difference between evaporation and drying. 

The following paragraphs introduce the physical structures of the sludge evaporation lagoon system. 

The limitations for evaporation lagoons include local health ordinances potential for odors and health hazard when not properly designed land area requirements dependence on meteorological and climatological conditions. Sludge lagoons may require provisions to add makeup water to maintain a miiumum depth during dry, hot seasons. Finally, public access restrictions are necessary. 

Analyze the performance of a 60.5-ft diameter (max. surface area on top) evaporation lagoon in Spokane County, Washington, USA, for treating 5400-5580 gal per month of liquid sludge in April-June, assuming the following data are known ... 

---