Recycling Method by Sub-Critical Water Reactor

Abstract

Background/Objectives: After the landfilling was prohibited, food wastes were disposed of by composting or feeding. However, in the case of composting, the salt could not be removed, causing the crops to die or inhibiting the growth, and in the case of feed, the livestock died because it could not remove the toxicities that could be included in the food.

Methods/Statistical analysis: If the decomposition method by high temperature and high pressure steam is used instead of the decomposition activity of microorganisms, the recycling rate of organic waste can be further increased. Saturated steam of high temperature and high pressure into organic waste is stirred and carbohydrate is decomposed into glucose, protein into amino acid, fat into fatty acid or alcohol, sterilization of bacteria and sterilization without using microorganism or chemical Can be fed. It does not produce dioxins, carbon dioxide or nitrous oxide.

Findings: When food waste is made into feed, it can be treated with saturated steam at around 3.2 ° C and 135 ° C to reduce nutrient destruction, and cause sterilization and hydrolysis to produce a digestible feed. In the case of composting, it is stirred with 16 atm and saturated steam at around 200 ° C to cause hydrolysis, acid hydrolysis, pyrolysis and carbonization to make compost with good warmth, fertility and breathability containing wood vinegar and activated carbon. Condensate can be used as a liquid ratio so it can be completely recycled.

Improvements/Applications: Simple hydrolysis of proteins produces amino acids. The processed product extracts the nutrients contained in the organic waste, making it a nutritious and easy-to-digest feed, cultivated soil and soil improving material that are easy to breed into yeast suitable for the soil. 

Keywords: recycling, organic waste, steam heating, food waste, animal food.