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Despite the downturn in the catering industry caused by the epidemic, the generation of food waste is still increasing

         According to the data from the National Bureau of Statistics, the national catering revenue in 2019 was 4.67 trillion yuan, an increase of 44.6% compared with 3.23 trillion yuan in 2015 before the "13th Five-Year Plan" and an average annual growth rate of 10%. A gratifying result. However, after the outbreak of the epidemic in 2020, my country's catering consumption market has been severely affected, and the catering industry has become one of the most severely damaged industries.

         According to data released by the National Bureau of Statistics, in December 2020, catering revenue was 495 billion yuan, an increase of 0.4%, and a decrease of 0.6% in November. For the whole year of 2020, catering revenue was 3,952.7 billion yuan, a decrease from 2019; catering revenue above the designated size was 823.2 billion yuan, a year-on-year decrease of 14.0%.

         The outbreak of the new crown epidemic in early 2020 has severely hit my country's catering business, and the epidemic has brought huge changes to people's lifestyles. However, despite the closure of restaurants and the closure of school and company canteens, the amount of food waste generated has decreased, but the amount of kitchen waste generated by cooking at home has increased;

         However, considering that the amount of food waste from eating out is higher than the remaining amount from cooking at home, the total amount of food waste generated in my country will increase to 127.75 million tons in 2020, but the rate of increase will drop from 2019 to 2019. 5.91% fell slightly to 5.79%. In 2021, people's lives will gradually return to normal, so the amount of food waste generated will continue to increase.

         my country is the best country in the world to control the epidemic. At the end of 2020, my country's economic and industrial development has gradually recovered, and people's daily life is also on track. With the rapid development of my country's "takeaway" economy, assuming that the annual compound growth rate of food waste generated in my country during 2021-2026 remains unchanged, that is, maintaining the annual compound growth rate of 6.16% from 2015-2020, then in 2021 my country's The amount of food waste generated has increased to 135 million tons; in 2026, the amount of food waste generated in my country will reach 180 million tons.

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         Developing high-efficiency recycling technology is the ultimate way to deal with huge amounts of kitchen waste

         At the National Two Sessions in 2020, representatives of the National People's Congress stated in their proposals that the amount of food waste produced far exceeded expectations. The key issue of waste sorting terminal treatment is the treatment of food waste, and seeking new technologies and solutions is currently the Indispensable to deal with the impact of the huge amount of food waste after waste sorting.

         Food waste in my country mainly includes food waste, paper, metal, bone, wood, fabric, plastic and grease, among which food part accounts for 70%-90%, water content accounts for more than 70%, and oil content accounts for 1%-5%. Organic matter accounts for more than 80% of dry matter, crude protein accounts for about 15% of dry matter, and the carbon-nitrogen ratio is generally (10:1)-(30:1);

         Instant food waste has the characteristics of high moisture content, high organic matter content, high fat, high salt, perishable, and a small amount of non-food impurities. Direct filling and incineration of food waste that has not been effectively treated will cause irreversible harm to the ecological environment. , For example: the landfill process will produce odor and greenhouse gases, and leachate will pollute groundwater, etc.; effective treatment of my country's huge amount of kitchen waste is a hot issue in my country's environmental protection industry in recent years.

         It is worth mentioning that in the paper "Research and Prospects of Food Waste Recycling Utilization Technology" published by Nanjing University and Hong Kong Baptist University, it was found that the nature of food waste in different cities in China is different, and the reason is likely to be It is related to local living and eating habits; therefore, in the process of resource utilization, the characteristics of each component of kitchen waste in different cities should be fully considered, and the most suitable treatment method should be selected when choosing waste treatment technology.

         The huge amount of kitchen waste generated every year is gradually challenging the bottom line of landfills in my country, and also creates a super load on the self-circulation of the environment. In addition to being "hazardous", food waste also has the characteristics of "resources". Proper disposal will produce good environmental and economic benefits;

         Therefore, a suitable green and sustainable food waste disposal method has become a difficult and hot issue at present. However, on the development path of resource processing technology, my country's technology still has a lot of room for improvement.

         At present, the reduction of odorous gas and waste water and other pollutants re-produced in the waste treatment process is also an inevitable requirement for continued technology research and development; in addition, my country should improve the stability of the operation of waste treatment equipment, and develop more technologies with high conversion rates of food waste resources For example, the production of high value-added chemicals by biorefinery of food waste is an effective way to realize high-value utilization of food waste, and it is also an important way to replace traditional chemical routes to produce chemicals.

         New food waste treatment projects are increasing year by year, and the southwest region may become a new star

         From 2018 to early April of 2021, the newly disclosed kitchen waste treatment projects in my country have grown rapidly. In 2019, my country newly prepared 22 food waste treatment projects, an increase of 5 compared with 2018. Among them, some projects have invested as much as 1.2 billion yuan. In 2020, my country will newly prepare 24 food waste treatment projects, an increase of 2 compared with 2019.

         Due to the special situation of the epidemic in 2020, only by comparing the situation in 2019 and 2021, from January to April 2021, there are already 11 new food waste treatment projects in my country, which is equivalent to the new increase in 2019. 50% of the construction project.

         In terms of regional distribution, from January to April 2021, my country's newly disclosed food waste treatment projects are mainly distributed in Central China and Southwest China, and the number is 7, accounting for 43% of the total number of new projects in the country. %.

         Judging from the construction distribution of new kitchen waste projects from January to April in 2021, the Southwest market may become a gold digger in the later stage. This is because, at the National People's Congress in 2020, deputies to the National People's Congress proposed to promote distributed processing of food waste in urban and rural areas across the country.

         Including the formulation of policies to encourage and promote the use of small-scale distributed food waste treatment methods, the central government will give certain support to the investment, construction and operation of small-scale distributed food waste treatment sites. Judging from this aspect, we can also find another trend in the development of food waste disposal. The market of food waste treatment will sink to third- and fourth-tier cities.

         The overall development of Yunnan and Guizhou in Southwest China is relatively slow, and the environmental protection industry is even more backward than other economically developed cities. Recently, in the environmental protection chapter of the "14th Five-Year Plan", the state clearly stated that by 2025, green production and lifestyles will be widely formed, carbon emissions will be stable after peaking, the ecological environment will fundamentally improve, and the goal of building a beautiful China will be basically achieved; around this Targets Sichuan, Yunnan and Guizhou announced the requirements of the 14th Five-Year Plan on green environmental protection: