Hunan United Kitchen Waste Treatment Co., Ltd. was established on November 23, 2011, located in Changsha Kaifu District East Second Ring Road No. 218, is a specialized in kitchen waste collection and transportation, harmless treatment, resource utilization of investment, construction and operation of environmental protection high-tech enterprises, with kitchen waste harmless treatment and resource utilization core technology, has obtained a variety of kitchen waste treatment inventions and utility model patent technology nearly 30 items, and passed the national high-tech enterprise certification.
In 2011, the company obtained the concession right to invest in the construction and operation of "Changsha Kitchen Waste Harmless Treatment Project", and on June 28, 2012, the Changsha Kitchen Waste Harmless Treatment Project was basically completed and put into operation. The company now mainly collects the kitchen waste generated by more than 10,000 large, medium, and small kitchen waste generating units, covering the urban areas of Changsha City, Changsha County, Liuyang City and Ningxiang City, and the daily collection and treatment of kitchen waste can reach up to 1200 tons. Relying on this project, Changsha was listed in the second batch of "Pilot Cities for Resource Utilization and Harmless Treatment of Kitchen Waste" in China in October 2012. In 2017, Changsha achieved full coverage of kitchen waste collection and treatment, and the "Changsha characteristics" of "changsha model" of "government-led, market operation, legal management, and policy guarantee" of kitchen waste collection and treatment, "full coverage, whole society participation, full independent technology, and full resource utilization" have been fully recognized by the society.
United Kitchen Company continues to explore and develop new technologies and new processes for kitchen waste treatment, through special treatment equipment for kitchen waste combined sorting, crushing pulping, high temperature sterilization, solid-liquid separation and other processes, the waste oil, waste water and waste residue in the kitchen waste are separated, and the harmless treatment and resource utilization of kitchen waste are realized: among them, waste oils and fats are processed into industrial-grade mixed oils; waste water is discharged through anaerobic fermentation treatment, and the biogas generated in the wastewater treatment process is used for power generation and internet access The biogas slurry biogas residue can be used for agricultural and forestry fertilization; the waste residue is insect cultured by a third-party unit and can be made into high-protein feed raw materials. Biogas power generation in the harmless treatment and resource utilization of kitchen waste can also achieve the purpose of carbon emission reduction, with an average annual carbon emission reduction of about 170,000 tons. The Changsha Kitchen Waste Harmless Treatment Project was rated as "Typical Case of Resource Recycling in Hunan Province" and "Typical Case of Energy Conservation and Carbon Reduction in Hunan Province" by Hunan Provincial Development and Reform Commission.
Changsha kitchen waste harmless treatment project opened a new chapter in the classification of domestic waste, realized the "gorgeous turn" of kitchen waste "turning waste into treasure", not only solved the major problems of urban environmental pollution and food safety impact, consolidated the achievements of Changsha's "two-type society" and "food safety city" construction and the creation of civilized cities, but also reflected the strength and speed of urban development, highlighted the firm belief in the ecological construction of Star City, and played a comprehensive green ecological and environmental protection comprehensive effect of new energy, resource recycling and promotion of circular economy development , to help achieve the goals of "carbon peaking" and "carbon neutrality".