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Utilization of kitchen waste resources

Time:2020-02-15 11:40:26     Author:dl-author

  Compared with food waste generated from food processing and food wholesale and retail, food waste is not only high in water content, high in organic matter, but also much higher in fat and salt than other waste. However, kitchen waste also has high recycling value. Its main ingredients are starch, food fiber, animal fat, etc. It is rich in protein, vitamins, edible oils, minerals and cellulose. Abundant resources of animal feed and organic matter.

  1. Made into feed. Catering waste can be sorted, dehydrated, degreased, dried, and crushed to make high-nutrition animal feed with a protein content of 20-30%. It can be fed to pigs and chickens and also used by pets. The products meet the requirements of health, environmental protection, agriculture and other standards. The equipment, facilities and processes for manufacturing feed have been basically mature. Brother cities already have experience in this area. Germany, Finland, Cuba, and other countries will properly treat kitchen waste with feed to make it a resource. After the kitchen waste is made into feed, quality inspection is required to ensure safety.

  2. Composting. The kitchen waste is sorted, dehydrated, fermented, dried, crushed, mixed with fertilizer, and granulated to make organic compound fertilizer. The basic technology can be divided into aerobic fermentation compost method and anaerobic fermentation digestion method. According to different control of ventilation, humidity, stirring, temperature, and different methods of adding bacteria and strains, it can evolve into a variety of technological processes.

  Compared with the two, the cost of compost treatment is slightly lower than that of prepared feed, but the sales are lacking in the market and can only be provided to the agricultural sector for free, with a poor overall benefit. If the feed is made, there will be a certain sales income. Proper profits are of great significance to reduce the burden on the government and catering companies, and the market operation of the company.

  Another way to recycle kitchen waste is to set up a biological waste disposer in small and scattered places such as residential quarters and unit canteens. This is a dynamic fast organic waste composter that adds high-efficiency bacteria and controls composting conditions. Place kitchen waste and treat it from the source. The residue after consumption can be used as flower fertilizer or green soil in the community.

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