1. Current situation of kitchen waste treatment industry:
1. The output of kitchen waste is huge;
2. Lack of scientific and standardized industrial processing stations;
3. Problems like saliva oil and garbage pigs emerge one after another;
2. The current treatment methods of kitchen waste:
1. Mixed domestic waste landfill; 2. making concentrated feed; 3. Anaerobic digestion;
3. Disadvantages of kitchen waste treatment and landfill treatment:
1. The high water content causes a large amount of leachate, which is difficult to treat and causes serious secondary pollution.
2. The soil has high organic matter content and strong smell, which is harmful to the environment;
3. Have a lot of soil resources;
4. The treatment of kitchen waste is especially suitable for anaerobic digestion:
1. The soil organic matter content is high, and the economic benefit of anaerobic digestion and electric energy is high;
2. The water content is high, and the wet anaerobic digestion is very convenient;
3. The digested biogas residue can be used as chemical fertilizer, and the resource regeneration degree is high;
4. Anaerobic digestion combined with high temperature sterilization can eliminate harmful pathogens and complete the harmless treatment of kitchen waste;
Present situation and method analysis of kitchen waste treatment equipment
5. Composting of kitchen waste:
Kitchen waste contains more soil organic matter and trace elements, and the ratio of carbon to nitrogen is effective, which is suitable for the growth, development and metabolism of microbial strains and is a good raw material for production and manufacturing. The basic technology of kitchen waste composting can be divided into two categories: continuous fermentation composting and aerobic digestion and absorption. Among them, thermophilic aerobic composting is a more extensive way at present, which can be used to ripen raw material compost in a short time. The high temperature generated in the whole composting process can significantly inhibit harmful bacteria.