Composting. Aerobic composting is the process by which organic wastes are converted into compost or manure in presence of air and can be of different types. The process of composting starts with these organic wastes being buried under layers of soil and then, are left to decay under the action of microorganisms such as bacteria and fungi. Anaerobic Digestion – an Alternative to Composting. Composting is a viable process of treating solid waste for beneficial use and destroying patho-gens, diseases and undesirable weed seed. Compost piles are built on top of the ground, which should be cleared of weeds or other plants that might intrude. Solid-waste management - Solid-waste management - Composting: Another method of treating municipal solid waste is composting, a biological process in which the organic portion of refuse is allowed to decompose under carefully controlled conditions. Composting process Composting process is similar to sanitary land-filling and it is popular in developing countries. World's Best PowerPoint Templates - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. Yields are stable end products and good soil conditioners. Two methods have been used in this process: Mechanical Composting Plant Layout: Brief details of Mechanical Composting Plant: Most of the Municipal Solid Waste (MSW) received at compost plant is mixture of decomposable material with plastic, metal, glass, sand and other non-biodegradable material. There is no need for a container when composting, but these types of composting require very different ground preparation. This is the method in which waste can be decomposed and converted into organic matter by burying them in the compost pits. Decomposable organic matter is separated and composted in this procedure. By composting, we can close the nutrient cycle, put wasted food to good use, mitigate climate change and support the creation of arable soil. Microbes metabolize the organic waste material and reduce its volume by as much as 50 percent. The wastes are composed by the action of bacteria and fungi. This method should not be used to compost animal products or large quantities of food scraps. Composting. Compost bins make composting easier, but some people prefer to use compost piles or compost trenches. Types of Compost Nutrient (%) N P 2 O 5 K 2 O Rural compost 0.4 – 0.8 0.3 – 0.6 0.7 – 1.0 Urban compost 1.0 – 2.0 1.0 1.5 Composting methods There are several methods of composting such as (1) Adco method, (2) Activated composting method, (3) Indore method, (4) bangalore method etc. Create your own compost bin or pile for personal food … What are the best ways to get involved with composting? The most common is the Heap Method, where organic matter needs to be divided into three different types and to be placed in a heap one over the other, covered by a thin layer of soil or dry leaves. By properly managing air, moisture and nutrients, the composting process can transform large quantities of organic material into compost in a relatively short time. This method involves decomposition of organic matter into fertile manure with the help of red worms. During composting, the microorganisms con- 5. Winner of the Standing Ovation Award for “Best PowerPoint Templates” from Presentations Magazine. They can be used as a base for fertilizers. MSW is first received in pre-processing area of the plant. Vermicomposting. Page 1 of 1 Basic Principles for Composting of Biodegradable Household Wastes * Robert J. Holmer1 1 Fundamentals In the process of composting, microorganisms break down organic matter and produce carbon dioxide, water, heat, and humus, the relatively stable organic end product. Food scraps, yard waste, etc., make up for one of the major organic wastes we throw every day. Types of Waste and Waste Generators: Backyard or onsite composting is suitable for converting yard trimmings and food scraps into compost that can be applied on site. All organic materials decompose with time. Unlike composting, however, AD also produces biogas, which consists of about 2/3 methane (CH4). 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