Foreign how to dispose of waste agricultural plastic film

by:POLYVA     2021-02-04
Agricultural plastic film is used to protect agricultural production plant moisture loss and other measures of a kind of products, with the progress of science and technology, more and more high to the requirement of agricultural plastic film, all kinds of new membrane appear constantly. At present, foreign agricultural plastic waste disposal method basically has the following kinds: ( 1) Polluting plastics recycling mainly rely on machinery, high recovery rate. ( 2) Recycling ( Including simple regeneration and modification regeneration) Is one of the main disposal waste mulching films. Compared with the modified recycling, easy recycling technology investment and the cost is relatively lower, choose is more common, but modified recycling is the development direction. But on the current international plastic recycling utilization rate is not high, especially in the developed countries. Plastic recycling is one of the main obstacles in between the original and renewable polymer lack the same competitive pricing. It also requires market acceptance and demand for recycled plastic. In the long run, the use of Britain's plastic recycling industry and biological resistance and not so ideal may also limit the regeneration process and skills basis. Such as plastic recycled after use is one of the container, but in fact it is difficult to implement the scheme. The local authorities are not renewable plastic container plan for the following reasons: insufficient funds ( 54%) ; Material market confidence ( 25%) ; The benefits of environmental uncertainty ( 19%) ; Insufficient information ( 9%) ; The lack of public demand, 2%) 。 ( 3) From the waste agricultural plastic film and the urban solid waste for energy recovery is another effective way of recycling. Because waste mulching films of calorific value is extremely high, can reach 44, 707-45, 356 kJ, it has potential energy recycle. In many developed countries have established specialized processing factory. In the United States have established more than 200 waste energy recycling plant. In Japan and Germany, energy recovery as a kind of waste plastics processing scheme is gaining benefits. Our country has not yet have a special plastic incinerator, waste plastic is often with municipal garbage burning, the introduction of Japan's mitsubishi heavy industries, such as shenzhen Martin furnace emissions garbage incinerator and Shanghai pudong imported waste incineration equipment in France. Incineration method to obtain the advantage of energy to produce steam or electricity generation is to minimize contamination of the natural environment, compared with landfill and retention in the soil of the advantages particularly outstanding. For energy recovery, the key to consider collection, transportation and processing and the cost of pollution treatment. In general, the energy recycling plant need equipped with high temperature combustion furnace and reduce air pollution of pollution treatment facilities. Good incinerator will not cause secondary pollution, but the cost is extremely high, equipment loss and maintenance of the high cost of operation, and necessary to form scale. < br / > < br / >
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