UTILIZATION OF HOUSEHOLD WASTE-BASED SOLID FUEL

Waste, garbage is a mixture of substances, objects and their parts that have lost their consumer properties in the process use and intended for disposal. The purpose of the article is note the main current concepts of the distribution and plastic waste disposal problem and propose its promising solutions. In Uzbekistan, the number of solid utilities waste is 63 million tons per year (about 450 kg per person), up to 25 % of them can be plastic. Plastics are organic materials based on synthetic or natural polymers consisting of monomer units, combined into long macromolecules. The most common plastics are polyvinyl chloride, polypropylene, polycarbonate, polystyrene, polyethylene low and high pressure, etc. To ensure utilization of disposable items, a labeling system has been developed. Most types of plastics are usually well recyclable and recyclable. In Europe up to 50 % of waste is recyclable, and in Russia - no more than 4 %. The article discusses the problems of waste polymeric material decontamination and recycling, which are common among household and technical waste and difficult to dispose of and emit toxic substances into the environment. In particular, the composition, structure and properties of waste plastic bags with a thickness of up to 40 microns, which are increasing day by day, have been studied and a rational method of their use has been proposed. The results of the research has shown that the waste of unsuitable polyethylene bags contains a source of fuel necessary for the metallurgical industry - hydrocarbons, which can be used as an alternative to traditional fuels used in metallurgical furnace and can be used as a heat energy source. It also provides with useful information on the theoretical foundations of processes that can help increase the economic efficiency of metallurgical plants. Also, the main technological parameters of polyethylene bag recycling and their incineration in metallurgical furnaces were identified. The cost effectiveness of using plastic waste as a fuel in metallurgical processes has been analyzed