![]() Lagoon sludge sampling allows operators to determine nutrient concentration in the sludge through laboratory analysis. Why Is Sludge Sampling Necessary? Skip to Why Is Sludge Sampling Necessary? This factsheet focuses on the lagoon sludge sampling considerations and methods. Monitoring the amount of sludge in the lagoon and collecting samples for analysis are required for lagoon management, regardless of the method of sludge removal and utilization. This option allows polymer-treated sludge to leach out liquid during storage, which reduces the tonnage of sludge to be transported and land-applied and reduces overall cost of land application. Alternatively, the sludge can be removed using a floating dredge ( Figure 3) and mixed with a polymer before being pumped for temporary storage in permeable bags (referred to as geotextile bags) ( Figure 4). Sludge can be removed by agitating the lagoon and pumping the suspended sludge mixture into manure tankers for direct land application ( Figure 2). The concentration of nutrients and solids in the manure liquid also increases with sludge buildup, which will lead to salt deposits, blockage, and corrosion in manure irrigation systems. Because settling solids (sludge) are already a phosphorus-rich residue, these become even more challenging to manage agronomically when they accumulate in the lagoon. If left to build up, sludge will reduce the lagoon treatment volume ( Figure 1), which reduces the treatment efficiency and leads to objectionable odor emissions. Sludge consists of dead bacterial cells, digested residue, and inert material that cannot be degraded in the lagoon. ![]() While effective in reducing manure solids, anaerobic treatment leads to the slow accumulation of a residue rich in solids and nutrients (sludge). Lagoon treatment relies on anaerobic bacteria to break down organic matter in manure, which reduces odor and solid content and makes liquid manure (supernatant) easier to manage. ![]() Anaerobic swine lagoons are earthen structures used in the southeastern United States to store and treat swine manure on the farm ( Figure 1). ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |