In the past hundred years, with the increasingly abundant human diet, the amount of kitchen waste has increased at an unprecedented scale. It is a key problem in the field of environmental protection in China to study and choose the appropriate treatment technology and mode of kitchen waste and realize the harmlessness, reduction and resource utilization of kitchen waste treatment. Over the years, countries around the world have been exploring in the field of kitchen waste treatment, and many innovative kitchen waste treatment technologies and environmental technology products have emerged. We might as well know about them.
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Japan: Pocasi composting is popular in families
In recent years, the total amount of kitchen waste in Japan is about 21 million tons, accounting for about 41% of domestic waste. In 2111, Japan introduced the "kitchen waste recycling law" to improve the recovery rate of kitchen waste, which greatly improved the recovery rate of kitchen waste in a short period of time.
new york, USA: Kitchen wastes are not allowed to be incinerated in landfills
In the United States, kitchen wastes are classified by reducing the amount at the source, donating food and processing them into animal feed. As far as the development trend of treatment technology is concerned, anaerobic digestion devices are used more and more at present. According to the report released by the U.S. Environmental Protection Agency in September this year, the amount of kitchen waste recycling in the United States has greatly increased in recent years. In 2118, the amount of kitchen waste treated in various ways reached 23.99 million tons, much higher than the 11.69 million tons in 2116, which can be said to have doubled in two years.
Israel: "Household Biogas" system is popular
In terms of how to design and popularize kitchen waste treatment facilities that take into account the cost and performance according to local conditions, Israel's "Household Biogas" company has shown a good demonstration effect. Yale Taylor, the founder of this company, visited a small biogas system in Mexico in 2117 and was deeply inspired. Later, he went to other developing countries to learn more information. He and his friends bought several biogas generation systems from India and other countries. After installation experience, they thought that these systems generally had problems such as low efficiency, bad smell and insect harassment.
there is a big gap in the processing capacity of kitchen waste in China
the output of kitchen waste in China is increasing rapidly year by year. According to statistics, the output of kitchen waste in China has exceeded several hundred million tons at present. The present situation of kitchen waste treatment in China can be summarized as late start, fierce momentum and large capacity gap. Among some kitchen waste recycling facilities built in China, the technical treatment capacity of Changsha Leibang Environmental Protection Kitchen Waste Treatment Plant is worth mentioning. Independent innovation of "aerobic fermentation" technology, the kitchen waste is separated from oil and water, and the rest is converted into organic fertilizer. At present, Changsha Leibang Environmental Protection Kitchen Waste Treatment Plant handles about 1,111 tons of kitchen waste every day in China, which ranks among the best in similar kitchen waste treatment in China.