It is reported that cities with good economic conditions can produce about 1300 to 1700 tons of food waste every day. However, simple and crude dumping or landfill is still common, and even the "gutter oil" gray benefit industry has grown up under this background. Threats to food safety and ecological environment have Food waste treatment Put on the agenda of pollution control. Many cities actively explore effective food waste disposal schemes, and the new mode of resource utilization has also come to the forefront. Looking at the entire industrial chain of food waste treatment, there are several important nodes that deserve attention.
The first step after food waste is generated is to throw it away. In view of the large proportion of food waste in domestic waste, especially in some rural areas, priority should be given to separating food waste by promoting waste classification. As a special kind of solid waste, food waste has a large amount of production, great harm and high reuse value. How to deal with it properly has attracted considerable attention. Waste classification is the first and key step to reduce waste.
After the action of "throwing", the action of "collecting" and "transporting" are linked together, pointing to the next stop of the kitchen waste recycling journey. In order to collect and transport food waste and prevent unprofessional mixed loading, many practical supervision methods have also been explored. It is a common method to collect kitchen waste by special personnel. Whether cooperating with third-party environmental protection enterprises or self operating under the urban sanitation system, the effectiveness of kitchen waste collection is greatly guaranteed.
Generally speaking, kitchen waste is divided into three parts: oil, water and catering solid waste. Oil water separation is a common pretreatment step for kitchen waste treatment. Sewage is discharged up to standard, and waste oil can be reused as kitchen waste. At present, waste oil is converted into soap, biodiesel, etc Kitchen waste treatment equipment Its technology has become increasingly mature and its market acceptance has improved significantly. In addition to oil and water, catering solid waste itself contains high content of salt, calcium, protein, phosphorus, nitrogen and starch, rich in organic matter and trace elements, and has a wide use space. It can be processed into natural organic fertilizer, made into biological feed, or used for incineration, power generation, fermentation, biogas production, pyrolysis to gas, etc.
Under the requirements of dehydration, crushing, processing and transformation of food waste Food waste treatment equipment It is becoming a new favorite of the market. Even household and environmental protection appliances have begun to expand the field of kitchen waste disposal, promoting the development and innovation of more equipment. There is a waste disposal equipment that can crush food waste and is equipped with an intelligent grinding system to prevent bacteria and odor from breeding; There is also a kitchen waste extruder, which can reduce dehydration for many times, support oil-water separation operation, and simplify the sorting steps. It is conceivable that similar equipment will continue to appear in the future to meet the growing environmental needs of modern times. According to the demand, no matter for what purpose and under what circumstances, kitchen waste treatment equipment will brew a blue ocean.
