Presently, reducing food and agricultural waste has become the main agenda of many governments, NGOs, and other societies in many countries. Food and agricultural waste is nothing but remnants of our used stuff as vegetables, food stuff, animal waste etc. which people are practicing and reusing them daily by repurposing for their utility since ancient times. Due to modern urbanization and industrialization, the concept of repurposing has changed by new waste management and recycling technology invention, together with use and throw concept.
Many agricultural enterprises use large amounts of agricultural chemicals. The use of these chemicals seems to increase the cost of labor increases. With this increased uses comes the potential for surface and groundwater contamination as a result of improper storage of chemical residue, rinse water, and unused chemicals and the improper disposal of empty containers. State and local authority should be considered before planning any chemical handling system.
Food and agricultural waste of different consistencies requires different management techniques and handling equipment. Food and agricultural waste may be in the form of liquid, slurry, semisolid, or solid, waste, such as manure can change consistency throughout the system, all the year. The total solid concentration of manure is the main characteristic that indicates how the material can be handled.
The process of collection, transport, disposal, recycling and monitoring of agricultural waste is called food and agricultural waste management is undertaken to recycle the food and agricultural waste so as to reduce the ill effects of wastes on environment, health and aesthetics. Various techniques are used for the management of waste which includes land-filling, incineration, anaerobic digestion, pyrolysis, plasma gasification, recycling, composting. Anaerobic digestion produces bio fuel in the form of biogas. Plasma gasification results in the generation of electricity from waste. Recycling of food and agricultural waste involves the collection, sorting and reprocessing of waste into new products. Vermin composting is the preferred form of composting as it results in the formation of vermin compost called black gold due to the presence of rich nutrients and growth promoting factors in it.
State and local authority must be contacted for necessary permits obtained before land application. Many permits require ongoing monitoring of groundwater and possibly soil and plant matter. Hydraulic loading is often ignored. If the site has a high water table or low permeability, the amount of water that can be applied generally is reduced. In some food processing waste, the level of salt is too high for land application. Most food processing waste land application sites should be designed by a professional who has experience in these type systems.