The process of food waste solution is generally divided into several parts: waste collection, waste compression and reduction, waste transfer, and waste landfill (or waste incineration); kitchen waste recycling machines are widely used, and the domestic waste treatment in towns and cities is inseparable from the garbage transfer station.
Township garbage treatment process: household collection, village centralized transshipment, township compression and reduction treatment, and county terminal resource treatment;
City Municipal solid waste: it is collected by households and transported by communities. In some large communities, waste transfer stations are directly built. If there is no waste transfer station in the community, it will be transported to the kitchen waste treatment equipment in the surrounding areas for compression and reduction treatment, and then transported to the garbage dump for treatment.
Some of the garbage out from the kitchen waste recycling machine is transported to the sanitary landfill site. The garbage is filled into the prepared pits, covered and compacted, so that it undergoes biological, physical and chemical changes, decomposes organic matter, and achieves the purpose of reduction and harmlessness. Special pipelines and impermeable layers are laid in these pits to collect the gas and leachate produced by garbage fermentation.After the gas is burned, part of the leachate is purified into reclaimed water, which is used to clean garbage vehicles and dust on the ground, and part of the leachate is filtered to meet the prescribed standards and then discharged, which will not pollute the environment.
The core process of kitchen waste recycling machines are to separate organic matter and inorganic matter. At present, the process equipment used in the market includes kitchen waste crusher, screw press and pulping separator.
Screw dewatering machine is used for treating the kitchen waste, the screw squeezer compresses the materials through the space change formed by the screw shaft and the screen mesh to realize the squeezing and dehydration of the materials; in order to better remove the moisture of the materials, some organic garbage of fruits and vegetables needs to go through a crushing process to destroy the structural form of the garbage of fruits and vegetables, The water combined in the fruits and vegetables is more convenient to achieve the result of solid-liquid separation under the action of pressure.
The kitchen waste depackaging machine, which adopts a pendulum type crushing principle, where in a high-speed rotating pendulum with huge kinetic energy collides with organic matters in kitchen waste for a plurality of times to crush fruit and vegetable organic matters in the kitchen waste, and the fruit and vegetable organic matters are leaked out of a screen in the form of fragments, and the size of the fragments depends on the size of the aperture of the screen. The crushed kitchen waste enters the screw press through the conveying equipment to squeeze and dehydrate the crushed waste.
Traditional kitchen waste disposal methods are mainly incineration and landfill with ordinary waste, but both methods have obvious drawbacks:
Harmless landfills cover a large area and are difficult to locate. They pollute the air and leachate, contaminate the soil and groundwater, and produce methane that may cause explosions. Incineration has the advantages of less land occupation and energy reuse. However, food waste contains water and oil, which not only increases the energy required for incineration, but also easily produces dioxins. After incineration, fly ash and slag shall be disposed of as hazardous waste.
Therefore, under the background of the promotion of waste classification policy, the harmless, reduction and resource treatment of kitchen waste has become an inevitable development direction, and kitchen waste treatment equipment has emerged as the times require, which can reduce the production of kitchen waste from the source and carry out resource treatment at the end.
Compared with traditional waste treatment, the advantages of kitchen waste recycling machines are as follows:
Reduction treatment: the treatment is completed from the garbage transfer, mainly through physical crushing, and then the crushed kitchen waste liquid is dehydrated, and finally the separated oil and kitchen waste are taken out for treatment, so as to realize reduction. This method is mainly used in canteens of schools, hotels, institutions and units to deal with food waste.
Terminal resource treatment: kitchen waste needs to be separated separately. Generally speaking, the base of kitchen waste disposal needs to be large to produce good results. Generally, crude fiber, crude protein, salt and oil in kitchen waste are recovered after removing water.
Compared with traditional waste treatment, kitchen waste recycling machine has two advantages of reduction treatment and terminal resource treatment, so that kitchen waste can achieve harmless, reduction and resource treatment.