![]() Municipalities – cities often upgrade old facultative lagoons with aeration and mixing to improve Get a head of spring turnover by using VitaStim Polar through winter. VitaStim Polar can often reduce solids up to 50% just by feeding during the two week turnover period. Turnover is a great time to feed products like our VitaStim Polar this product allows the sludge that was lifted up from the bottom to be quickly digested, while the sludge is stirred up. This surface water goes to the bottom and the warm bottom solids are pushed to the top. A spring turnover is that point when the surface water is 39.5☏ and the densest. These ponds will often get a spring turnover which can cause major odors. In winter the activity of the ponds come to a halt and sludge builds up faster this is especially true in climates with long winters, such as Northern US and Canada. They also have a difficult time removing ammonia. ![]() Lagoons that get a lot of BOD and are surrounded by trees, build up at a faster rate. Lagoons that are less than 4-5 ft in depth, with good wind action tend to buildup at a slower rate. This will depend on how much on the depth of the ponds and on how much wind action they receive. By using our VitaStim Sludge Reducer or VitaStim Summer Slam during the summer up, to 60% of the sludge can be removed. Insoluble BOD accumulates on the bottom for anaerobic decomposition of solids while the soluble BOD stays in the water column.įacultative ponds tend to have a faster rate of sludge buildup, generally ¼” to ½” per service year. ![]() These lagoons, while affordable, do have a couple of drawbacks such as BOD accumulation, high amounts of sludge buildup, and odors. Facultative lagoons are low cost because they do not have any electrical requirements and rely on wind action over the surface to incorporate dissolved oxygen that speeds decomposition.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |