The HTLC® Process
The High Temperature Liquid Composting (HTLC®) process is an extremely efficient, state-of-the-art, in-vessel biological system which rapidly converts organic matter (including fish byproducts, vegetable and plant wastes, meat wastes, etc.) into high quality, manure free liquid organic fertilizer products.
Although similar in principal, the differences between liquid composting (HTLC®) and solid composting (windrow, static pile, etc.) are significant. Within solids composting, the core of the windrow heats up due to the microbial breakdown of the surrounding organic matter. The temperature at the center of the windrow, in addition to the digestive environment, pasteurizes the compost such that disease organisms are destroyed. Conversely, the outer shell of the windrow remains much cooler, at or near ambient temperatures, and therefore must be turned into the center for adequate high temperature processing. The thermal gradient, which is substantial for solids composting, does not exist in the liquid composting process – that is, the high temperature is equally distributed throughout the media. This and the improved digestion within the liquid composting process, reduces the treatment time for pasteurization while increasing the systems efficiency and reliability.
The HTLC® process is a proven biological treatment system developed by a multi-disciplinary team of scientists more than 30 years ago. This process utilizes naturally occurring, high-temperature bacteria (thermophiles) to digest and pasteurize all biodegradable organic wastes. In this process the heat released by the developing microflora drives the temperature as high as 195oF (90oC). The high temperatures within the system, in conjunction with the digestive environment, rapidly eliminate all the major plant, animal and human diseases. A one hour exposure at 140oF (60oC), in a moist environment, is effective in destroying bacteria responsible for cholera, typhoid fever, bacillary dysentery, brucellosis, E. coli, salmonellosis, etc. For instance, Salmonella is destroyed so quickly that these bacteria cannot be found in the system after only minutes of treatment.
In Table 1: Thermal Death Points of Some Common Pathogens and Parasites (see below) it shows that the HTLC® process (>131oF/550C) eliminates all pathogens harmful to plants, animals and humans within 60 minutes.