With the implementation of waste classification, the disposal of food waste has received extensive attention. Therefore, Food waste treatment The manufacturer summarized six common treatment methods for food waste.

1. Crushing direct unloading method

The kitchen is equipped with a kitchen waste disposal device, which is installed under the kitchen sink and connected with the drainage pipe. The cutterhead is driven by a small motor. Food waste is directly crushed and discharged into the municipal sewage pipe network, and then discharged into the municipal sewage treatment system for harmless treatment. This method is simple and used in some parts of the United States.

2. Sanitary landfill method

The sanitary landfill method is simple to operate. In the past, this was a common method of urban domestic waste treatment. Kitchen waste is directly buried. At present, it is seldom used and has high requirements for landfill. There are two kinds of leachate and biogas safety. Air pollution and other hazards.

3. Power generation by incineration

The dry waste treatment commonly used for domestic waste incineration power generation is also used for food waste treatment. By burning food waste in a dedicated incinerator, the generated heat energy can be converted into steam or electric energy to achieve energy recovery and utilization. However, food waste has high water content, low heat value, and auxiliary fuel needs to be added during combustion. Therefore, the rate is not high, and waste gas treatment is also a problem.

4. Thermal decomposition method

The thermal decomposition method of food waste is to decompose the waste at high temperature, convert the organic matter in the waste into methane, oil and carbon, and then use them. The thermal decomposition method has a broad application prospect. At present, the technology is not mature and has less application.

5. Feed

Feed is to use a large amount of organic matter in food waste, through its crushing, dehydration, fermentation, soft and hard grading Food waste treatment equipment Food waste treatment equipment converts waste into high calorie animal feed, but this method has food safety hazards and food safety hazards. Homology. Sexual issues.

6. Microbiological method

The microbial treatment methods of food waste mainly include aerobic composting and anaerobic digestion.

Aerobic composting is a process of decomposing organics into soluble organics by extracellular enzymes secreted by aerobic microorganisms under aerobic conditions, and then infiltrating into cells through microbial metabolism to achieve composting. Kitchen waste has high organic matter content and rich nutrition. It is a good microbial nutrient and is very suitable for composting.

Anaerobic digestion refers to the decomposition of organic wastes by microorganisms under anaerobic conditions, in which carbon, nitrogen and oxygen are converted into methane and carbon dioxide, and nitrogen, phosphorus, potassium and other elements are left in the residue and converted into fertilizer