We throw away nutrients every day. We need to recycle, as God and Nature intends.

On February 19, 1993, the National Sewage Sludge Use and Disposal Regulations (Chapter 40 Code of Federal Regulations Part 503 and commonly referred to as the 503 Regulations) were published in the Federal Register. The 503 regulations define treatment methods that transform bio-solids to Class "A" status; Class "A" bio-solids are free of pathogens and Vector attractions. In essence, the Regulation establishes several categories in terms of stabilization, pathogenic content, beneficial reuse and disposal practices for all land-applications. Since 1993, experience has taught that the most reliable methods are the temperature methods and/or chemical methods. The temperature methods include direct heating and thermophillic digestion. However, due to operating costs, direct heating and chemical methods are expensive. Chemical methods require a minimum pH of 12 utilizing an oxidizer, such as lime; this creates a very alkaline product, which is not good for land application. Temperature methods require heating to a minimum of 50 °C for a specified period of time, which is dependent on the amount of temperature above 50 °C. This is expensive. The most economical method involves Thermophillic Digestion (TD). In comparison, TD is inexpensive. Energy cost is minimal due to the thermophillic process itself. In the case of Aerobic TD (ATAD), digestion occurs exothermically, maintaining temperature once initiated. In the case of Anaerobic TD (ATD), a hydrocarbon gas is produced in digestion, which is sent to fire a boiler to maintain the required temperature. However, while all bio-solids have odor, ATAD and ATD digested bio-solids tend to have significant issues in relation to odor. Further, the dewatering cost of TD Solids (TDS) is much more than that of Mesophillic Digested Solids due to the nature of thermophillic bacteria. This biological difference can make the dewatering cost of TDS expensive rendering ATAD or ATD uneconomical.



Both above charts are available in the PDF file below

Nutro™ is an economical means of nutrient recycle.

Nutro™ is an economical means of bio-solid recycle.

Nutro™ is an economical means of animal waste recycle.

Nutro™ is an economical means to produce organic fertilizer.

Nutro™ - ClearValue's Bio-Solids Recycling Technology