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Aerated static pile (ASP) composting refers to any of a number of systems used to biodegrade organic material without physical manipulation during primary composting. The blended admixture is usually placed on perforated piping, providing air circulation for controlled aeration. It may be in windrows, open or covered, or in closed containers ...
Super ultra-low emissions vehicle (SULEV) is a U.S. classification for passenger vehicle emissions. The classification is based on producing 90% fewer emissions than the average gasoline-powered vehicle. [ 1 ]
Digestate typically contains elements, such as lignin, that cannot be broken down by the anaerobic microorganisms. Also, the digestate may contain ammonia that is phytotoxic, and may hamper the growth of plants if it is used as a soil-improving material. For these two reasons, a maturation or composting stage may be employed after digestion.
This is a list of composting systems: Home composting (small-scale) Bokashi (horticulture) Composting toilet; Container composting; Ecuador composting method;
Windrow turner used on maturing piles at a biosolids composting facility in Canada. Maturing windrows at an in-vessel composting facility.. In agriculture, windrow composting is the production of compost by piling organic matter or biodegradable waste, such as animal manure and crop residues, in long rows – windrow.
In-vessel composting generally describes a group of methods that confine the composting materials within a building, container, or vessel. [1] In-vessel composting systems can consist of metal or plastic tanks or concrete bunkers in which air flow and temperature can be controlled, using the principles of a " bioreactor ".
Even if the compost is of high quality and all standards are met, a negative public perception of waste-based composts still exists. The presence of visible contaminants reminds users of this. Quality control of the feedstock is the most important way of ensuring a quality end product.
The process for composting is more specifically defined, as it is controlled by humans. Essentially, composting is an accelerated biodegradation process due to optimized circumstances. [37] Additionally, the end product of composting not only returns to its previous state, but also generates and adds beneficial microorganisms to the soil called ...