CN110467482A - A kind of kitchen fruit and vegetable organic garbage processing method - Google Patents

Abstract

The invention discloses a method for treating organic garbage of kitchen fruits and vegetables, which comprises the following steps: S1, separating solid impurities from the organic garbage of kitchen fruits and vegetables through a primary selection platform, and then crushing and dehydrating them through a crushing and dehydrating machine; The garbage is biologically fermented by the fertilizer machine in turn, and the large debris is separated by the secondary sorting platform; S3, the waste water generated by the crushing and dehydrating machine flows through the waste water tank, screw stacker, anaerobic reactor, aerobic reactor, Plant purification device. The beneficial effects of the present invention are as follows: for the prior art, waste water treatment, thermal energy circulation and waste gas treatment process are added to the original technological process, and the kitchen fruit and vegetable organic waste is further classified and treated, and the generated solids and waste water are treated separately, and at the same time The heat and waste gas generated in the solid treatment process are recovered and utilized, so that the recovery of kitchen fruit and vegetable organic waste is more comprehensive, and the utilization of resources and energy is more thorough.

Description

A kind of kitchen fruit and vegetable organic garbage processing method

technical field

The invention relates to the technical field of garbage recovery, in particular to a kitchen fruit and vegetable garbage treatment technology, in particular to a kitchen fruit and vegetable organic garbage treatment method.

Background technique

With the development of the economy and the improvement of people's living standards, the discharge of urban domestic waste is increasing day by day. A large amount of domestic waste is piled up, occupying a large amount of land and polluting groundwater resources, which has a serious impact on people's living environment and physical health. , the Chinese government attaches great importance to the problem of garbage disposal, and the development of kitchen waste disposal machines is imperative. With the increasing requirements for environmental protection, the disposal of household kitchen waste has attracted more and more attention from governments.

There are also some processing machines for organic waste such as kitchen fruit and vegetables in the prior art and patent literature, such as the invention of the authorized announcement number CN 207592417 U, which is called the kitchen waste fruit and vegetable waste mixing machine, which discloses a kitchen waste fruit and vegetable waste processing machine. The utility model relates to a mixing processing integrated machine, which relates to the technical field of environmental protection. It includes a screening platform, a fruit and vegetable waste crushing and dehydrating machine, a granulator, a vibration screening machine, a screw conveyor, a food waste crusher and an organic fertilizer machine. Organic waste such as kitchen fruits and vegetables is made into granular feed or waste, which realizes the recycling and utilization of kitchen fruit and vegetable waste, saves resources and protects the environment. Its process flow diagram is shown in Figure 1.

However, there are still deficiencies in the existing technology when dealing with kitchen fruit and vegetable waste, such as no recycling of the waste water taken off by the crushing dehydrator; no recovery of the heat and waste gas of the high-efficiency fertilizer making machine; There is no classification treatment, resulting in waste of resources and energy.

Contents of the invention

In order to overcome all or part of the defects in the above-mentioned technologies, the present invention proposes a method for treating kitchen fruit and vegetable organic waste, which is realized through the following technical scheme.

A method for treating kitchen fruit and vegetable organic waste, comprising the following steps: S1, the kitchen fruit and vegetable organic waste is separated from solid impurities by a primary selection platform, and crushed and dehydrated by a crushing and dehydrating machine; S2, the solid waste generated by the crushing and dehydrating machine is sequentially processed Fertilizer biological fermentation, the secondary sorting platform separates large debris; S3, the waste water generated by the crushing dehydrator flows through the waste water tank, screw stacker, anaerobic reactor, aerobic reactor, and plant purification device in sequence; S4, the gas in the fertilizer making machine described in step S2 exchanges heat with the heat exchanger, and the exhaust gas generated in the heat exchanger flows through the exhaust gas treatment device and the second blower in sequence.

Further, in the step S1, the kitchen fruit and vegetable organic waste enters the primary selection platform through the elevator, and enters the crushing and dehydrating machine through the panel conveyor.

Further, in the step S2, the solid waste enters the fertilizer making machine through the first screw conveyor, and enters the secondary sorting platform through the conveyor and the second screw conveyor.

Further, in the step S3, the waste water enters the fertilizer making machine through the dry slag produced by the screw stacker for biological fermentation; the waste water produced in the anaerobic reactor and the aerobic reactor flows into the waste water pool through the aqueduct; Probiotics are added to the purification unit.

Further, in the step S3, the plant purification device includes a primary three-dimensional purification device and a secondary three-dimensional purification device; in the step S4, the purified Water, and spray the exhaust gas in the exhaust gas treatment device, and then re-introduce the waste water into the first-level three-dimensional purification device.

The beneficial effects of the present invention are: for the prior art, waste water treatment, thermal energy circulation and waste gas treatment processes are added to the original technological process, and the kitchen fruit and vegetable organic waste is further classified and processed, and the generated solids and waste water are treated separately, and at the same time The heat and waste gas generated in the solid treatment process are recovered and utilized, so that the recovery of kitchen fruit and vegetable organic waste is more comprehensive, and the utilization of resources and energy is more thorough.

Description of drawings

Fig. 1 is a schematic diagram of the process flow of the prior art.

Fig. 2 is a schematic diagram of the process flow of the present invention.

Fig. 3 is a schematic process flow diagram of a specific embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a solid processing system according to a specific embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a wastewater treatment system according to a specific embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a thermal energy cycle system according to a specific embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an exhaust gas treatment system according to a specific embodiment of the present invention.

Fig. 8 is a schematic diagram of structural connection of a specific embodiment of the present invention.

in:

1—hoist;

2—primary selection platform;

3—panel conveyor;

4—crushing dehydrator;

5—solid treatment system; 51—first screw conveyor; 52—fertilizer making machine; 53—conveyor;

54—second screw conveyor; 55—secondary sorting platform; 56—granulator;

6—wastewater treatment system; 61—first fan; 62—heat exchanger;

7—thermal energy circulation system; 71—wastewater pool; 72—screw stacker; 73—anaerobic reactor; 74—blower; 75—aerobic reactor; 76—first-level three-dimensional purification device; ;

8—exhaust gas treatment system; 81—exhaust gas treatment device; 82—second fan.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the prior art, as shown in Figure 1, most of the organic wastes from kitchen fruits and vegetables are only processed by microbial fermentation to make fertilizer, but the waste water produced is not treated, and the heat generated by the fermentation process is not used.

As shown in Fig. 2, a kind of kitchen fruit and vegetable organic garbage processing method comprises the following steps: S1, the kitchen fruit and vegetable organic garbage is separated from solid impurities through the primary selection platform 2, and crushed and dehydrated through the crushing and dehydrating machine 4; S2, passing through the crushing and dehydrating machine 4. The solid waste generated by fertilizer machine 52 is biologically fermented by fertilizer making machine 52, and the large debris is separated by secondary sorting platform 55; S3, the waste water generated by crushing and dehydrating machine 4 flows through waste water pool 71, screw stacker 72, and waste water in sequence. Oxygen reactor 73, aerobic reactor 75, plant purification device; S4, the gas in the fertilizer making machine 52 described in step S2 exchanges heat with the heat exchanger 62, and the waste gas produced in the heat exchanger 62 It flows through the exhaust gas treatment device 81 and the second fan 82 in sequence.

Fig. 3 to Fig. 8 are the specific embodiment of a kind of kitchen fruit and vegetable organic garbage treatment method of the present invention, and the following will be described in conjunction with the system included in the present invention, a kind of kitchen fruit and vegetable organic garbage treatment system includes sequentially arranged according to the technological process , primary selection platform 2 with hoist 1, crushing dehydrator 4 with panel conveyor 3, also includes solids treatment system 5, waste water treatment system 6, thermal energy circulation system 7 and waste gas treatment system 8; solids treatment system 5 The wastewater treatment system 6 is connected with the crushing dehydrator 4, the thermal energy circulation system 7 is connected with the solid treatment system 5, and the waste gas treatment system 8 is connected with the thermal energy circulation system 7 and the wastewater treatment system 6 respectively. Compared with the prior art, the present invention adds a secondary sorting platform to the solid treatment system 5, making the processed products easier to store and transport; after the crushing dehydrator 4, a waste water treatment system 6 is added, which is beneficial to kitchen fruits and vegetables The water separated from the garbage is further treated to reduce the discharge of waste water pollution; the thermal energy circulation system 7 is added to the solid treatment system 5 to recycle heat energy, and the waste gas generated by the thermal energy circulation system 7 is connected to the waste gas treatment system 8 to make the whole production process flow Wastewater, solids, and waste gas can be recycled and reused.

As shown in Figure 4, in a specific embodiment, after the kitchen fruit and vegetable waste passes through the hoist 1, the primary selection platform 2, the panel conveyor 3, and the crushing and dehydrating machine 4, the solid waste enters the solid treatment system 5, and the solid treatment system 5 includes The first screw conveyor 51, the fertilizer making machine 52, the conveyor 53, the second screw conveyor 54, the secondary sorting platform 55, and the granulator 56 are arranged in sequence according to the technological process. Wherein, the first screw conveyor 51, the conveyor 53 and the second screw conveyor 54 are all used for solid transportation, and the fertilizer making machine 52 adopts the organic material fertilizer making machine that meets the requirements in the prior art or patent documents, and the fertilizer making machine 52 It is used to quickly transform organic matter into bio-organic fertilizers that are harmless to the environment, and discharge them through the fertilizer machine 52. The bio-organic fertilizers are sent to the secondary sorting platform 55 by a conveyor belt. The granulator 56 is made into granules of a certain specification, and finally transported to the material warehouse through a storage vehicle, and sold to various places for agricultural planting and green planting after being packaged.

As shown in Figure 5, the thermal energy circulation system 6 includes a first blower fan 61 and a heat exchanger 62, the heat exchanger 62 has two air outlets and two air inlets, and the air inlets of the heat exchanger 62 are separated by air ducts. Connect the first blower fan 61 and the fertilizer making machine 52, and the air outlet of the heat exchanger 62 is respectively connected to the fertilizer making machine 52 and the waste gas treatment system 7 through the air duct. Because fertilizer making machine 52 can require higher temperature during work, for avoiding the waste of heat energy, heat exchanger 62 is provided with air guide pipe at the entrance of fertilizer making machine 52 and introduces high-temperature gas to fertilizer making machine 52, at the fertilizer making machine 52 An air duct is arranged at the outlet to guide the low-temperature gas into the heat exchanger 62 . At the same time, the heat exchanger 62 is connected to the first blower 61 to ensure continuous heating of the high-temperature gas to the fertilizer making machine 52; The temperature of the gas introduced into the fertilizer making machine 52 must be above 60 degrees Celsius, and it is mixed with the water vapor produced in the fertilizer making machine 52, and the water vapor and volatile organic compounds produced by the fertilizer making machine 52 are taken away from the fertilizer making machine 52 to reach the material. Double effect of drying and oxygenation.

As shown in Fig. 6, described waste water treatment system 7 comprises the waste water pool 71 that is connected successively by aqueduct, stacker 72, anaerobic reactor 73, air blower 74, aerobic reactor 75, one-level three-dimensional purification device 76, Secondary three-dimensional purification device 77. A certain amount of waste water will be produced by the crushing and dehydrating machine 4 of kitchen fruit and vegetable waste. The waste water is discharged through the oil separation device, and the oil and water are separated and then flowed into the waste water pool 71, and pumped into the screw stacker 72 to further compress the insoluble suspended matter. Separation, the extruded sludge is sent to the fertilizer making machine 52 for fertilizer processing, the compressed waste water enters the high-efficiency biochemical reactor, and is combined with anaerobic reactor 73 and aerobic reactor 75 for biochemical treatment to remove most of the organic pollutants and then flows into it The plant purification device further purifies the low-concentration refractory organic matter in the wastewater. High-efficiency plants can efficiently purify pollutants such as ammonia nitrogen and phosphate in wastewater, so that wastewater can be directly used for greening water or ground flushing water, making full use of water resources. In a specific embodiment, cress is selected as an efficient plant for purifying wastewater. The plant purification device includes a primary three-dimensional purification device 76 and a secondary three-dimensional purification device 77 .

As shown in Figure 7, the waste gas treatment system 8 includes a waste gas treatment device 81 and a second fan 82, the waste gas treatment device 81 is connected to the heat exchanger 62 through an air duct, and is connected to the primary three-dimensional purification device 76 and the Secondary three-dimensional purification device 77. The waste gas in the waste gas treatment device 81 is sprayed, photolyzed, and activated carbon is adsorbed and discharged up to the standard. The circulating spray water comes from regenerated water that meets the wastewater treatment standard. After spraying, it directly flows into the first-level three-dimensional purification device 76 to purify the sprayed organic matter in a circular manner. Draining waste water, easy operation and management.

In the present invention, it should be noted that during the solid treatment process, the technical principle of the fertilizer making machine 52 is to use high-temperature solid fermentation technology to keep the fermentation temperature stable at about 60 degrees for a long time; The device 62 uses the principle of heat exchange to exchange heat between the hot waste gas discharged from the fertilizer machine 52 and the incoming cold air through the high-efficiency air-to-air heat exchanger 62, so that the temperature of the hot waste gas is greatly reduced and the temperature of the incoming air is increased. Greatly reduce the energy consumption of air heating; in the wastewater treatment process, the combination of anaerobic reactor 73 and aerobic reactor 75 is used, and high-purity oxygen is used to reduce the volume of gas required; the plant purification device is a relatively mature sewage treatment Technology, the most widely used is the constructed wetland technology.

In a specific embodiment, the present invention involves three circulation processes; one is the air heat circulation between the heat exchanger 62 and the fertilizer making machine 52; The third is the spray water circulation between the primary three-dimensional purification device 76 and the secondary three-dimensional purification device 77 and the waste gas treatment device 81.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (5)

1. A method for processing organic waste from kitchen fruits and vegetables, comprising the following steps: S1, kitchen fruit and vegetable organic waste is separated from solid impurities by the primary selection platform, and crushed and dehydrated by the crushing and dehydrating machine; S2, the solid waste produced by the crushing and dehydrating machine is biologically fermented by the fertilizer machine in turn, and the large debris is separated by the secondary sorting platform, and the fertilizer with the same specification is made by the granulator; S3, the waste water produced by the crushing dehydrator flows through the waste water tank, screw stacker, anaerobic reactor, aerobic reactor, and plant purification device in sequence; S4, the gas in the fertilizer making machine described in step S2 exchanges heat with the heat exchanger, and the exhaust gas generated in the heat exchanger flows through the exhaust gas treatment device and the second blower in sequence. 2. A method for processing organic waste from kitchen fruits and vegetables according to claim 1, characterized in that, in the step S1, the organic waste from kitchen fruits and vegetables enters the primary selection platform through the hoist, and enters the crushing and dehydration platform through the panel conveyor. machine. 3. A kind of kitchen fruit and vegetable organic waste treatment method according to claim 1, is characterized in that, in described step S2, solid waste enters the fertilizer making machine through the first screw conveyor, and passes through the conveyor and the second screw conveyor. The conveyor enters the secondary sorting platform. 4. A kind of kitchen fruit and vegetable organic waste treatment method according to claim 1, is characterized in that, in described step S3, waste water enters fertilizer making machine through the dry slag that screw stacker produces and carries out biological fermentation; The waste water produced in the reactor and the aerobic reactor flows into the waste water pool through the aqueduct; probiotics are added in the plant purification device. 5. A kind of kitchen fruit and vegetable organic waste processing method according to claim 1, is characterized in that, in described step S3, described plant purification device comprises one-level three-dimensional purification device and two-level three-dimensional purification device; In the above step S4, the purified water in the secondary three-dimensional purification device is introduced into the waste gas treatment device, and the waste gas in the waste gas treatment device is sprayed, and then the waste water is reintroduced into the primary three-dimensional purification device.