Hbzhan content guide: The operation of cities and people generates hundreds of millions of tons of garbage every year. The “garbage siege†is the current dilemma facing us, especially the problem of kitchen waste generated every day needs more and more people’s attention. Due to the lack of effective supervision of the recycling of kitchen waste, it has brought many harms to our food safety. Where is the food waste recycling road?
Process Innovation Promotes Reuse of Kitchen Waste Resources
With the development of China's economy and the acceleration of urbanization, the discharge of municipal solid waste is increasing, and the proportion of kitchen waste is increasing, accounting for 37-62% of urban domestic waste. Kitchen waste contains a lot of toxic and harmful substances. Improper handling of kitchen waste can easily cause deterioration, spoilage of harmful microorganisms and mosquitoes, produce a lot of toxins, and emit malodorous gases, polluting water bodies and the atmosphere.
The leakage of kitchen waste during the collection and transportation process and the leachate produced by landfill disposal will also directly damage the ecological environment. Its disorderly discharge and unreasonable use will also have a serious impact on the health of the people. Therefore, the treatment and management of kitchen waste has become a major problem in the treatment of municipal solid waste.
Although there are many models for the resource utilization of kitchen waste and kitchen waste nationwide, Xu Haiyun, chief engineer of the China Urban Construction Research Institute, is not only incapable, but also the process technology is basically in the process of exploration. . "There is no technology that achieves a more comprehensive benefit in terms of cost control, recycling, safety and low carbon, and if these three cannot be realized at the same time, the special treatment will lose its meaning."
In the existing disposal process, the composting process has been used for the longest time, but so far, it has not been able to fundamentally solve the problems of odor control, low quality of composting products, and poor product sales. There are few successful cases in the country about the twenty or thirty attempts of the composting process.
Many companies are also working hard to explore new and more efficient kitchen/kitchen waste treatment processes. After years of research, a certain enterprise in Beijing has developed a combined treatment mode of “thermal hydrolysis and anaerobicâ€. At the same time that the kitchen/kitchen waste is harmless, 30 cubic meters of biogas can be produced per ton of garbage to realize energy. Utilization. Due to its low cost, safe and low carbon, and avoiding the secondary pollution of the composting process and product quality, the industry expects this route to be quite high.
Policy first management should be standardized
The unified collection and transportation of kitchen waste has public utilities and social welfare, and involves many functional departments such as urban management, health, food quality supervision, environmental protection, and energy. Therefore, it is necessary to set up a full-time government management agency. Under the unified leadership, the government functional departments perform their respective duties, forming a leadership mechanism and a long-term working mechanism for the comprehensive management of kitchen and kitchen waste.
In recent years, the state and various localities have issued a series of policy documents to actively support the harmless treatment of kitchen waste and strengthen pollution prevention and control. On the one hand, we actively formulated the “Technical Specifications for the Treatment of Kitchen Wastesâ€, and on the other hand, we also collected pilot projects for the treatment of kitchen waste. In May 2010, the country selected 33 cities for pilot kitchen waste trials to explore effective solutions to the problem of kitchen waste disposal in China. Organize and carry out pilot projects for the utilization of urban kitchen waste resources, and coordinate the harmless treatment and resource utilization of kitchen waste. At present, more than 30 cities including Beijing, Shanghai, Guangzhou, Hangzhou, Shenzhen, Chongqing, Urumqi, Ningbo and Suzhou have issued relevant management measures for kitchen waste.
To do a good job in the treatment of kitchen waste requires “positive energyâ€: first, do a good job of source reduction and source classification; secondly, it is the key to establish a clear payment system for food waste. Third, supervision must be in place. It is understood that In many cities, the urban management of kitchen waste is divided and the management is chaotic. Some departments are difficult to put in place even if they want to manage it. Finally, the combination of centralized treatment and decentralization is the best medicine for dealing with kitchen waste in big cities.
Willy opens a new model for the development of kitchen waste processing business
Industry experts said that the government should support high-quality kitchen waste collection and processing enterprises, and gradually realize the market-oriented operation of kitchen waste disposal. The government selects qualified, competent and experienced private kitchen waste treatment enterprises to be responsible for urban kitchen waste. The integrated processing work, increase support, and focus on supporting the leading enterprises in the kitchen waste treatment.
Following the breakthrough in the kitchen waste treatment project in June, Weierli expanded the Jiangsu kitchen waste processing business and introduced new ideas. The company announced on the 28th that it will work together with Kaitian Environmental Protection Technology Co., Ltd. to expand the kitchen waste treatment business in Hunan Province. On this basis, the company hopes to replicate this cooperation model in other provinces in the country as soon as possible by summarizing the successful experience of cooperation with Kaitian Environmental Protection.
Since its launch in 2011, Willy has been committed to transforming the company's main business from a single landfill leachate treatment business to a municipal solid waste treatment business, especially to organic waste treatment, industrial solid waste treatment, sludge. New business areas such as treatment and soil remediation are expanding. Among them, the kitchen waste disposal business is an important development direction of the company.
To this end, the company increased its R&D investment in 2012. One of the two main investments is the study of anaerobic digestion technology for kitchen waste leaching. After more than two years of technology introduction, digestion and re-innovation of the company's solid waste business team, the company has completed technical research and development and pilot work in the kitchen waste disposal business. The company's kitchen waste treatment process has also been finalized. The new business development of kitchen waste provides a solid technical support. The company will have the opportunity to become a leader in the future kitchen waste treatment industry.
In June 2013, the company successfully won the bid for Changzhou's kitchen waste collection, transportation and comprehensive disposal (Phase I) project, which achieved a major breakthrough in the company's kitchen waste treatment business. In addition, this breakthrough in the Hunan market shows that the company's kitchen waste treatment technology is gradually gaining market recognition. Once the company's cooperative development model can be effectively replicated in other provinces, it will further strengthen the company's position in the kitchen waste treatment industry.
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