As the kitchen waste has dual attributes of pollutants and resources, the treatment of kitchen waste will become a key project in the development of China's environmental protection industry, and the technology of recycling kitchen waste will become the technology research and development trend of China's environmental protection industry in the future.
Although the epidemic has caused the catering industry to slump, the amount of kitchen waste is still increasing.
According to the data of the National Bureau of Statistics, the national catering revenue in 20 19 was 4.67 trillion yuan, which was 44.6% higher than that in 20 15 years before the Thirteenth Five-Year Plan, with an average annual growth of 10%. It can be said that the catering industry has achieved very gratifying results during the 13 th Five-Year Plan period. However, after the outbreak in 2020, the catering consumption market in China was seriously affected, and the catering industry became one of the most seriously damaged industries.
According to the data released by the National Bureau of Statistics, in 2020, the catering revenue in February was 495 billion yuan, up by 0.4%, and decreased by 0.6% in 10. In 2020, the catering revenue was 3,952.7 billion yuan, lower than 2019; The catering revenue above designated size was 823.2 billion yuan, a year-on-year decrease of 14.0%.
The outbreak of COVID-19 epidemic in early 2020 has dealt a severe blow to the food industry in China and brought great changes to people's lifestyles. However, although restaurants are closed and canteens in schools and companies are closed, the amount of food waste generated by cooking at home has increased;
However, considering that the kitchen waste generated by eating out is higher than that generated by home cooking, the total amount of kitchen waste generated in China will increase to1277,500 tons in 2020, but compared with 20 19 years, the increase rate will decrease slightly from 5.9 1% to 5.79%. In 202 1 year, people's life will gradually return to normal, so the amount of kitchen waste will continue to increase.
China has the best epidemic control in the world. By the end of 2020, China's economic and industrial development will gradually recover, and people's daily life will be on the right track. With the rapid development of "take-away" economy in China, it is assumed that the annual compound growth rate of China's food waste output will remain unchanged during 2002 1-2026, that is, the annual compound growth rate will remain at 6. 16% from 2012020, and the food waste output in China will increase to. In 2026, the output of kitchen waste in China will reach 65.438+0.8 billion tons.
Developing efficient recycling technology is the ultimate way to deal with a large amount of kitchen waste.
At the two sessions of the National People's Congress in 2020, deputies to the National People's Congress said in their suggestions that the amount of kitchen waste produced far exceeded expectations, and the key issue in the end treatment of waste sorting was the treatment of kitchen waste. It is essential to seek new technologies and solutions to deal with the impact of the huge amount of kitchen waste produced after waste sorting.
China's kitchen waste mainly includes food waste, paper, metal, bone, wood, fabric, plastic, grease, etc. Among them, food accounts for 70%-90%, water content is above 70%, oil content 1%-5%, organic matter accounts for more than 80% of dry matter, and crude protein accounts for about15 of dry matter.
That is, kitchen waste has the characteristics of high water content, high organic matter content, high fat content, high salt content, perishable and a small amount of non-food impurities. Incinerating kitchen waste directly without effective treatment will cause irreversible harm to the ecological environment, such as odor and greenhouse gases, and leachate will pollute groundwater. Effective treatment of a huge amount of kitchen waste in China is a hot issue in China's environmental protection industry in recent years.
It is worth mentioning that in the paper "Research and Prospect of Resource Utilization Technology of Kitchen Waste" published by Nanjing University and Hong Kong Baptist University, it is found that the nature of kitchen waste in different cities in China is different, which is probably related to local life and eating habits; Therefore, in the process of resource utilization, we should fully consider the characteristics of each component of kitchen waste in different cities, and choose the most suitable treatment method when choosing garbage treatment technology.
A large amount of kitchen waste produced every year gradually challenges the bottom line of landfill in China, and also causes a super load on the self-circulation of the environment. Kitchen waste has the characteristics of "harmfulness" and "resource", and proper treatment will produce good environmental and economic benefits;
Therefore, it has become a difficult and hot issue to carry out suitable green and sustainable treatment of kitchen waste. However, on the development road of resource treatment technology, China's technology still has a lot of room for improvement.
At present, it is also an inevitable requirement for the continuous research and development of technology to reduce pollutants such as malodorous gases and wastewater generated again in the process of garbage disposal; In addition, China should improve the stability of waste treatment equipment and develop more technologies with high conversion rate of kitchen waste resources. For example, the bio-refining of kitchen waste to produce high value-added chemicals is an effective way to realize high-value utilization of kitchen waste and an important way to replace the traditional chemical route to produce chemicals.
The number of new kitchen waste treatment projects is increasing year by year, and the southwest region may become a rising star.
20 18-202 1 At the beginning of April, the newly-built kitchen waste treatment projects disclosed in China grew rapidly. In 20 19, there were 22 new kitchen waste treatment projects in China, 5 more than in 20 18. Among them, the investment of some projects is as high as1200 million yuan. In 2020, there will be 24 new kitchen waste treatment projects in China, two more than in 20 19.
Due to the special situation of the epidemic in 2020, only 20 19 and 202 1 were compared. From 202 1 to April, the kitchen waste treatment project 1 1 was added nationwide, which was equivalent to 20 18.
From the perspective of regional distribution, from 20021to1-April, the newly-built kitchen waste treatment projects disclosed in China were mainly distributed in Central China and Southwest China, with 7 projects, accounting for 43% of the national total.
Judging from the distribution of new kitchen waste projects in 20021and1-April, the southwest market may become a gold digger in the later period. This is because, at the National People's Congress in 2020, deputies to the National People's Congress suggested promoting the distributed treatment of kitchen waste in urban and rural areas throughout the country.
Including formulating policies to encourage and promote the use of miniaturized distributed kitchen waste treatment methods, the central government will give some support to the investment, construction and operation of miniaturized distributed kitchen waste treatment plants. From this point of view, we can also find another trend in the development of kitchen waste treatment, and the kitchen waste treatment market will sink to third-and fourth-tier cities.
The overall development of Yunnan-Guizhou in southwest China is relatively slow, and the environmental protection industry lags behind other economically developed cities. Recently, the state clearly stated in the environmental protection chapter of the "14th Five-Year Plan" that by 2025, green production and lifestyle will be widely formed, carbon emissions will decrease steadily after reaching the peak, the ecological environment will be fundamentally improved, and the construction of beautiful China will be basically realized; Around this goal, Sichuan, Yunnan and Guizhou announced the requirements for green environmental protection in the "Tenth Five-Year Plan":
—— For more data, please refer to the Analysis Report on Development Prospect Forecast and Investment Strategic Planning of China Kitchen Waste Treatment Industry issued by Forward-looking Industry Research Institute.