10754BPhotoelectric separation technology is a method to separate different materials according to the characteristic of the light reflection of material surface and has been used to separate glass of different colours. The colorless glass and colored glass contained in the waste glass should be separated according to various colors. Electric separation is a method using different electrical properties of components in high voltage electric field to separate wastes. This technology is mainly used in developed countries, but rare in underdeveloped or developing countries. Electrostatic separation technology depends on the difference in the conductivity, thermoelectric effect, and charged function and can be used for the separation of all types
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At present, its practical applications is mainly for large density components garbage such as sorting metal, glass and ceramic, leaving less dense materials such as paper, fibre, wood and other materials and can be used for burning or recycling; and food waste with middle density is easy for composting. The inertial separation equipment is mainly divided into parabolic separator, elastic separator, and density sorting machine. Flotation is adding flotation reagents in the slurry modulated by solid waste and water and pass into the air to form numerous tiny bubbles that make the desired separation component particles attached to the bubble floating on the surface of the slurry, forming a foam layer and then received; the particles that does not float remain in the slurry and will be discarded after appropriate waste treatment. In order to obtain a better separation efficiency and overcoming the defects of single separation technology, some experts have also transformed the vertical winnowing machine, combining other separation methods and airflow separation together such as vibration airflow separator and rotary airflow …show more content…
Because Germany, Austria, Belgium, and other European countries have a relatively perfect waste source separation system and mechanical sorting facilities, mechanical-anaerobic digestion technology was first applied in 1984 and now has been widely used to handle food waste, fruit and vegetable garbage, yard waste, and organic waste by mechanical sorting.
10774BMunicipal waste collection started late in China, and the Ministry of Construction identified Beijing, Shanghai, Guangzhou, Shenzhen, Hangzhou, Xiamen, Nanjing, and Guilin as the MSW collection pilot cities in June 2000. In recent years, based on foreign experience and China 's independent research in actual situation, mechanical-anaerobic digestion technology has been preliminary applied; however, the technique is mainly used for processing food waste with relatively simple ingredients and only individual projects for processing organic waste sorting, for example, Beijing Dong village classified waste plant importing foreign dry anaerobic fermentation technology to process the organic waste (Φ15–60 mm) of middle sorting section at a rate of 300 t/d. Mechanical-biological treatment is an integrated MSW treatment technology for optimum use and with the maturing of China 's waste sorting collection system, it will be
At present, its practical applications is mainly for large density components garbage such as sorting metal, glass and ceramic, leaving less dense materials such as paper, fibre, wood and other materials and can be used for burning or recycling; and food waste with middle density is easy for composting. The inertial separation equipment is mainly divided into parabolic separator, elastic separator, and density sorting machine. Flotation is adding flotation reagents in the slurry modulated by solid waste and water and pass into the air to form numerous tiny bubbles that make the desired separation component particles attached to the bubble floating on the surface of the slurry, forming a foam layer and then received; the particles that does not float remain in the slurry and will be discarded after appropriate waste treatment. In order to obtain a better separation efficiency and overcoming the defects of single separation technology, some experts have also transformed the vertical winnowing machine, combining other separation methods and airflow separation together such as vibration airflow separator and rotary airflow …show more content…
Because Germany, Austria, Belgium, and other European countries have a relatively perfect waste source separation system and mechanical sorting facilities, mechanical-anaerobic digestion technology was first applied in 1984 and now has been widely used to handle food waste, fruit and vegetable garbage, yard waste, and organic waste by mechanical sorting.
10774BMunicipal waste collection started late in China, and the Ministry of Construction identified Beijing, Shanghai, Guangzhou, Shenzhen, Hangzhou, Xiamen, Nanjing, and Guilin as the MSW collection pilot cities in June 2000. In recent years, based on foreign experience and China 's independent research in actual situation, mechanical-anaerobic digestion technology has been preliminary applied; however, the technique is mainly used for processing food waste with relatively simple ingredients and only individual projects for processing organic waste sorting, for example, Beijing Dong village classified waste plant importing foreign dry anaerobic fermentation technology to process the organic waste (Φ15–60 mm) of middle sorting section at a rate of 300 t/d. Mechanical-biological treatment is an integrated MSW treatment technology for optimum use and with the maturing of China 's waste sorting collection system, it will be