Kitchen waste treatment method and treatment device

Abstract

The invention discloses a kitchen waste treatment method and treatment device. The treatment device comprises an automatic feeding lifting device, a desalting and degreasing device, an oil-water separation device, an automatic sorting device, a drying device, a waste heat recovery device and a control system. The treatment device is characterized in that a water outlet of the desalting and degreasing device is connected with the oil-water separation device while a discharging port is connected with a feeding port of the automatic sorting device; a discharging port of the automatic sorting device is connected with a feeding port of a drying tank of the drying device through an electric ball valve; a steam outlet of the drying tank is connected with a vacuum pump through the waste heat recovery device, and vacuum negative pressure is formed in the drying tank through operation of the vacuum pump. Due to adoption of the structure, the treatment device has advantages of novel structure, high automation level, remarkable solid-liquid separation effect, short drying time, energy saving, low power consumption, environmental friendliness, odorless emission, high stability in operation andthe like.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to a method and device for treating kitchen waste. Background technique [0002] The patent number is 201310440932.3, the patent name is the invention patent of kitchen waste pretreatment equipment, and it has been authorized. Sterilization, deodorization and deodorization drying device, oil-water separation device, ionization deodorization device and gas condensation device. The sorting device is connected to the feed port of the biological sterilization, deodorization and deodorization drying device through the kitchen waste outlet, the automatic automatic sorting device is connected to the oil-water separation device through the liquid outlet, and the biological sterilization, deodorization and deodorization drying device is passed The exhaust port is connected to the gas condensing device, and the gas condensing device is connected to the ionization d...

AI Technical Summary

Problems solved by technology

But also there are following substantive deficiencies: 1, when fermenting and drying, owing to adopt decompression drying, drying temperature is usually more than 140 degrees, not only produces a large amount of high-temperature steams but also needs to be processed through ionization deodorization device, and drying time is long, consumes High energy, due to the poor condensation effect, the steam will be emitted outwards, and because the temperature is too high, it will destroy all the beneficial bacteria, protein and other nutrients contained in the kitchen waste. The nutrients will be partially destroyed; 2. When the kitchen waste is poured into the hopper, too much oil and water will flow into the drying tank through the sorting cylinder, thereby prolonging the drying time and increasing the drying burden; 3. When the kitchen waste is sorted into the sorting cylinder through the feeding hopper, since the sorting cylinder is equipped with a small-diameter filter at the inlet end, when the slender solids enter the sorting cylinder, it is not only easy Inserting into the small-diameter filter screen will increase the load on the separation shaft and the separation effect will be poor. Moreover, the small-diameter filter screen section of the sorting cylinder will have a high content of paste, resulting in the blockage of the sewage pipe; 4. When the equipment needs maintenance, Since the drying tank and the sorting drum are integrated, special equipment is required to separate the shaft from the drying tank, or the shaft from the sorting drum, and disassembly and assembly are very troublesome, time-consuming and labor-intensive

[0003] In addition, the separation methods of the existing oil-water separation devices can be roughly divided into gravity separation, centrifugal separation, electrical separation, adsorption separation, air flotation separation, etc. These oil-water separation methods all have their own substantial defects, and the oil-water separation takes a long time. , low oil extraction efficiency, and low oil purity. If the gravity separation method adopts the form of a sedimentation tank, there will be a dead zone in the liquid flow. A large amount of odor is produced; the maintenance of power components of centrifugal separation equipment is difficult, and it is currently only used in laboratory analysis equipment, etc.

[0004] In addition, due to the incomplete separation of the oil and water separated by the above separation method, the oil quality is poor, and storage and reuse are difficult.

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