CN209363257U - Pretreatment system suitable for anaerobic fermentation of kitchen waste processing - Google Patents
Pretreatment system suitable for anaerobic fermentation of kitchen waste processing Download PDFInfo
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- CN209363257U CN209363257U CN201821745491.2U CN201821745491U CN209363257U CN 209363257 U CN209363257 U CN 209363257U CN 201821745491 U CN201821745491 U CN 201821745491U CN 209363257 U CN209363257 U CN 209363257U
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- 239000002002 slurry Substances 0.000 claims abstract description 130
- 239000004576 sand Substances 0.000 claims abstract description 60
- 239000012071 phase Substances 0.000 claims abstract description 58
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000012216 screening Methods 0.000 claims abstract description 22
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- 238000003756 stirring Methods 0.000 claims description 10
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- 238000004065 wastewater treatment Methods 0.000 abstract description 5
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of pretreatment systems suitable for anaerobic fermentation of kitchen waste processing, comprising: splicing unit, screw conveyor, screening slurrying unit, slurry delivery pump, sand setting unit, the first slurries pump, impurity removing unit, the second slurries pump and boiling oil removing unit;Wherein, splicing unit is equipped with kitchen garbage entrance, discharge port and percolate efferent duct, and discharge port is sequentially connect with screw conveyor, high-pressure extrusion screening slurrying unit, slurry delivery pump, sand setting unit, the first slurries pump, impurity removing unit, the second slurries pump and boiling oil removing unit;The percolate efferent duct of splicing unit is connect with sand setting unit;The entrance for being connected to the sand setting unit is returned in the outlet of sand setting unit by the road;Boiling oil removing unit is respectively equipped with oily mutually outlet, water phase outlet and solid-phase outlet, and water phase outlet is returned through return pipe is connected to screening slurrying unit.The system can greatly reduce subsequent wastewater treatment amount, save processing cost.The system operatio is simple, and equipment takes up little area, and overall investment and maintenance cost are low, and operating cost is low.
Description
Technical Field
The utility model relates to a kitchen garbage handles the field, especially relates to a pretreatment systems suitable for kitchen garbage anaerobic fermentation handles.
Background
The kitchen waste mainly refers to food waste generated in families, dining halls, catering industry and other places, is commonly called swill and is an important component in household waste. The kitchen waste has the characteristics of rich organic matter content, high water content, easy decay and the like, and if the kitchen waste is not treated in time, pathogenic microorganisms, mosquitoes, flies and the like are easy to generate, so that the living environment of people is greatly influenced, and the physical and mental health of people is greatly harmed. At present, the kitchen waste has a plurality of treatment modes, such as feed treatment, aerobic composting, anaerobic fermentation and the like, wherein the anaerobic fermentation technology is more and more approved due to the advantages of simple operation, low treatment cost, good resource effect and the like. In view of the diversity of dietary modes in China, the components of the kitchen waste are very complex, the impurity content is high, the oil content is high, the kitchen waste is not suitable for directly carrying out anaerobic fermentation, and the kitchen waste needs to be pretreated.
At present, the pretreatment mode of the anaerobic fermentation technology of the kitchen waste is not mature, and most of the kitchen waste is directly used for anaerobic fermentation after crushing, sorting and pulping. For example, chinese patent CN101921809A discloses a method for treating kitchen waste, which mainly comprises a sorting and impurity-removing system, a pulverizing system, a centrifugal system, an oil-water separation system and a hydration pulping system. The method comprises the steps of firstly sorting the kitchen waste into substances such as metal, plastic and the like, then crushing organic substances to obtain a mixture with the particle diameter of less than 8mm, centrifugally separating the mixture into a light phase substance and a heavy phase substance, wherein the light phase substance is used for oil-water separation, the heavy phase substance is used for hydration pulping and hydrolytic acidification, and finally, the base material obtained after hydrolytic acidification is subjected to anaerobic fermentation treatment. However, in the treatment process, a large amount of water is consumed, the amount of biogas residues after anaerobic fermentation is increased, and in the treatment method, impurity components in the kitchen waste cannot be effectively removed only by a sorting system, so that the subsequent fermentation effect is influenced. Another chinese patent CN203030621U discloses a pretreatment system for sorting and pulping kitchen waste, which comprises a receiving hopper, a plate conveyor, a bag breaking machine, a chain plate conveyor, a magnetic separator, a vibrating screening machine, a crushing winnowing machine, a slurry storage tank, a cooking sterilization tank, a three-phase separator, an organic slurry tank, etc. which are connected in sequence. Although inorganic impurities in the kitchen waste can be sorted out, grease in the kitchen waste is removed, and the resource treatment of the kitchen waste is realized. However, the system has many and complicated sorting devices, which not only results in poor operability, but also results in large slurry loss.
SUMMERY OF THE UTILITY MODEL
Based on the problem that prior art exists, the utility model aims at providing a pretreatment systems suitable for kitchen garbage anaerobic fermentation handles, its resourceization level is high, organic matter loss is few, the running cost is low, the operability is good, can solve the water consumption that current kitchen garbage pretreatment systems exists big, the resourceization level is low, edulcoration inefficiency, the poor scheduling problem of operability.
The utility model aims at realizing through the following technical scheme:
the utility model discloses embodiment provides a pretreatment systems suitable for kitchen garbage anaerobic fermentation handles, include:
the device comprises a material receiving unit, a screw conveyor, a screening and pulping unit, a slurry conveying pump, a sand setting unit, a first slurry pump, an impurity removing unit, a second slurry pump and a cooking and oil removing unit; wherein,
the material receiving unit is provided with a kitchen waste inlet, a material outlet and a percolate output pipe, and the material outlet is sequentially connected with the spiral conveyor, the screening and pulping unit, the slurry conveying pump, the sand settling unit, the first slurry pump, the impurity removal unit, the second slurry pump and the cooking and oil removal unit;
a percolate output pipe of the receiving unit is connected with the sand setting unit;
the outlet of the sand settling unit is connected to the inlet of the sand settling unit through a pipeline;
the cooking oil removal unit is respectively provided with an oil phase outlet, a water phase outlet and a solid phase outlet, and the water phase outlet is connected to the screening pulping unit through a return pipe.
By the above technical scheme the utility model provides a can see out, the embodiment of the utility model provides a be applicable to kitchen garbage anaerobic fermentation's pretreatment systems, its beneficial effect is:
connect material unit, screw conveyer, screening slurrying unit, thick liquids delivery pump, sand setting unit, first thick liquids pump, edulcoration unit, second thick liquids pump and the deoiling unit of cooking through setting up organic connection, form a pretreatment systems, can realize to connect the material with the removal leachate, screen breaking slurrying, sand setting, edulcoration and cook the mode of deoiling and carry out the preliminary treatment to kitchen garbage, and the kitchen garbage after the processing is applicable to anaerobic fermentation and handles. In this system, through setting up return line, rely on the internal recycle to utilize the separation moisture to apply to broken slurrying unit and edulcoration unit, compare in traditional approach, saved the interpolation of a large amount of external source water, follow-up waste water treatment capacity that can significantly reduce simultaneously practices thrift the treatment cost. The system has the advantages of simple operation, small occupied area of equipment, low overall investment and maintenance cost and low operation cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a pretreatment system suitable for anaerobic fermentation treatment of kitchen waste provided by the embodiment of the present invention;
FIG. 2 is a schematic diagram of a specific configuration of a pretreatment system suitable for anaerobic fermentation treatment of kitchen waste provided by an embodiment of the present invention;
FIG. 3 is a process flow diagram of a pretreatment system suitable for anaerobic fermentation treatment of kitchen waste provided by the embodiment of the utility model;
in fig. 1: 101-a material receiving unit; 102-a screw conveyor; 103-screening and pulping unit; 104-a slurry transfer pump; 105-a sand setting unit; 106 — first slurry pump; 107-an impurity removal unit; 108-a second slurry pump; 109-cooking oil removal unit; 13-a grease storage tank; 14-homogenizing tank; a, a kitchen waste inlet; b-solid phase outlet; c-oil phase outlet; a D-aqueous phase outlet;
in fig. 2: 1-a receiving hopper; 2-percolation liquid pool; 3-odor collecting cover; 4-a large material sorting machine; 5-vertical crushing pulping machine; 6-sand settling machine; 7-a first slurry tank; 8-a shaker; 9-a second slurry tank; 10-a steam ejector; 11-a cooking pot; 12-a three-phase separator; 13-a grease storage tank; and 14-homogenate tank.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
As shown in figure 1, the embodiment of the utility model provides a pretreatment system suitable for kitchen garbage anaerobic fermentation handles includes:
the device comprises a material receiving unit, a screw conveyor, a screening and pulping unit, a slurry conveying pump, a sand setting unit, a first slurry pump, an impurity removing unit, a second slurry pump and a cooking and oil removing unit; wherein,
the material receiving unit is provided with a kitchen waste inlet, a material outlet and a percolate output pipe, and the material outlet is sequentially connected with the spiral conveyor, the screening and pulping unit, the slurry conveying pump, the sand settling unit, the first slurry pump, the impurity removal unit, the second slurry pump and the cooking and oil removal unit;
a percolate output pipe of the receiving unit is connected with the sand setting unit;
the outlet of the sand settling unit is connected to the inlet of the sand settling unit through a pipeline;
the cooking oil removal unit is respectively provided with an oil phase outlet, a water phase outlet and a solid phase outlet, and the water phase outlet is connected to the screening pulping unit through a return pipe.
Among the above-mentioned pretreatment systems, connect the material unit to include:
a receiving hopper and an infiltration liquid pool;
the kitchen waste inlet is arranged at the upper part of the side wall of the receiving hopper, and the discharge hole is arranged at the bottom of the side wall of the receiving hopper;
the top of the receiving hopper is provided with a sealed gas-collecting hood for collecting odor;
a percolate outlet is formed in the bottom of the receiving hopper, the percolate pool is arranged below the percolate outlet, and the percolate outlet corresponds to an upper opening of the percolate pool;
a percolate output pipe is connected in the percolate tank and is connected with the first slurry tank of the sand setting unit;
and a stirring device is arranged in the percolate pond.
In the above pretreatment system, the screening and pulping unit includes:
a large material separator and a vertical crushing pulping machine; wherein,
the large material sorting machine is sequentially connected with the vertical crushing pulping machine;
and the front-end inlet of the vertical crushing pulping machine is connected with a return pipe connected with the water phase outlet of the cooking oil removal unit.
In the above pretreatment system, the sand setting unit includes:
a sand settling machine and a first slurry tank; wherein,
the sand settling machine is sequentially connected with the first slurry pool;
an outlet of the first slurry pool is connected with a first slurry pump and then is respectively connected with the impurity removal unit and an inlet of the sand settling machine through pipelines;
and a stirring device is arranged in the first slurry pool.
In the above pretreatment system, the sand setting unit includes:
the impurity removing machine and the second slurry pool; wherein,
the impurity removing machine is sequentially connected with the second slurry pool;
and a stirring device is arranged in the second slurry pool.
In the above pretreatment system, the cooking oil removal unit includes:
a steam ejector, a cooking pot and a three-phase separator; wherein,
the steam ejector, the cooking pot and the three-phase separator are sequentially connected;
the front end of the steam ejector is provided with a slurry inlet;
the three-phase separator is respectively provided with an oil phase outlet, a water phase outlet and a solid phase outlet.
The pretreatment system further comprises:
a grease storage tank and a homogenate tank; wherein,
the grease storage tank is connected with an oil phase outlet of the three-phase separator;
the slurry homogenizing tank is connected with the water phase outlet of the three-phase separator;
and a stirring device is arranged in the slurry homogenizing tank.
The utility model discloses a pretreatment systems suitable for kitchen garbage anaerobic fermentation handles, main beneficial effect as follows:
(1) the system makes full use of the moisture contained in the kitchen waste, applies the kitchen waste to the crushing and pulping unit and the impurity removal unit by means of internal recycling, and saves a large amount of addition of foreign water compared with the traditional method. Meanwhile, the subsequent wastewater treatment capacity can be greatly reduced, and the treatment cost is saved.
(2) The system fully realizes the recycling of the kitchen waste, and effectively separates out impurities such as metal, glass and the like which are not suitable for anaerobic fermentation treatment in the kitchen waste, so that on one hand, the subsequent anaerobic fermentation efficiency is improved, and on the other hand, the recovery of the impurities is realized.
(3) The system has the advantages of simple operation, small occupied area of equipment, low overall investment and maintenance cost and low operation cost.
(4) The system extracts the crude oil with higher content in the kitchen waste to be sold as a product, so that the wastewater treatment pressure is reduced on one hand, and the product value is improved on the other hand.
(5) The system does not produce pollutants such as waste liquid, waste gas and the like in the pretreatment process of the kitchen waste, and has good environmental effect.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in figures 1 and 2, the embodiment of the utility model provides a pretreatment system suitable for kitchen garbage anaerobic fermentation handles can solve current pretreatment system existence: the water consumption is big, and the resourceful level is low, and edulcoration is efficient, the poor scheduling problem of operability, this system includes: the material receiving unit, the screw conveyer, the screening and pulping unit, the slurry conveying pump, the sand setting unit, the first slurry pump, the impurity removing unit, the second slurry pump and the cooking and oil removing unit are arranged in sequence, and the concrete constitution and the function of each unit are as follows (see figure 2)
(1) Connect the material unit:
connect material unit mainly includes: the receiving hopper 1 and the percolate pool 2 are used for receiving, temporarily storing and conveying the kitchen waste. The kitchen waste enters a receiving hopper after being collected and measured, and the volume of the receiving hopper is determined according to the treatment capacity of the kitchen waste. In addition, a sealed gas-collecting hood 3 is arranged at the top of the receiving hopper, and the tail end of the gas-collecting hood 3 is connected with a draught fan to keep negative pressure in the gas-collecting hood 3 and be used for collecting odor generated by the kitchen waste; the lower end of the receiving hopper 1 is provided with a drain hole and is connected with a percolate pool 2 through a pipeline, and the percolate pool is used for collecting percolate generated in the kitchen waste accumulation process; the materials entering the receiving hopper are conveyed to a screening pulping unit through a screw conveyer;
(2) a screening and pulping unit:
the screening pulping unit mainly comprises: a large material separator 4 and a vertical crushing pulping machine 5, which are used for removing impurities in the kitchen waste and preparing the rest into pulp. The kitchen waste from the receiving hopper 1 is conveyed to a large material separator 4 through a screw conveyor, and impurities with the diameter larger than 60mm, such as bottles, pop cans, plastic bags and the like, are screened out. The materials separated by the large material separator 4 are conveyed to a vertical crushing pulping machine 5 through a screw conveyor, light materials such as plastics and the like in the materials are separated through the principle of centrifugal crushing, the materials are crushed and pulped at the same time, the maximum particle size of the crushed materials is not more than 10mm, most of the materials have particle sizes smaller than 2mm, and the removal rate of inert materials is not less than 98%; the prepared slurry flows to a sand setting unit automatically;
(3) a sand setting unit:
and the sand settling machine 6 and the first slurry tank 7 are used for removing heavy substances such as sand in the slurry and reducing the abrasion of sand impurities on subsequent equipment. The slurry automatically flows to a sand setting machine, the separated heavy substances such as sand are taken as impurities to be transported outside, and the residual slurry in the sand setting machine flows out in an overflow mode and enters a first slurry pool 7 for temporary storage; the discharged slurry of the sand setting unit is conveyed to an impurity removal unit through a first slurry pump;
(4) an impurity removal unit:
the edulcoration unit mainly includes: the impurity removing machine 8 and the second slurry tank 9 are used for removing a small amount of plastic sheets, fibers and other substances in the slurry and preventing impurities from blocking subsequent equipment; and carrying out outward treatment on the impurities separated by the impurity remover, and automatically flowing the residual slurry to a second slurry pool. The discharged material of the impurity removal unit is conveyed to a cooking oil removal unit through a second slurry pump;
(5) a cooking oil removing unit:
the cooking oil removing unit mainly comprises: a steam ejector 10, a digester 11 and a three-phase separator 12 for separating the slurry into three phases of oil, water and solids; the slurry passing through the impurity removal unit is conveyed to a steam injection heater through a slurry pump to be mixed with steam for heating, the heating temperature is 70-80 ℃, then the slurry enters a cooking pot to be cached and insulated, and when the slurry stays for 1-2 hours approximately, emulsified oil in the kitchen waste is fully released. Then the slurry enters a three-phase separator 12 and is divided into three phases of oil, water and solid through centrifugal action, wherein the water phase is conveyed to a homogenizing tank 14 through a pump, the oil phase enters an oil storage tank 13, and the solid phase and the water phase can be conveyed to the homogenizing tank 14 together, or other resource utilization treatments, such as compost and the like, can be carried out according to project requirements.
As shown in fig. 2, in the system, a receiving hopper 1 of the receiving unit comprises a kitchen waste inlet, a kitchen waste outlet and a percolate output pipe; the kitchen waste is conveyed to a 4-material sorting machine through a screw conveyor, percolate automatically flows to a percolate pool 2 through a pipeline, and generated odor is collected and processed by a sealed gas collecting hood through a draught fan.
The solid content of leachate in the leachate tank 2 of the material receiving unit is generally about 4-6%, the leachate tank contains a stirring device and a submersible sewage pump, and the stirring device and the submersible sewage pump are respectively provided with at least 2. The percolate is conveyed to the first slurry tank 7 by a submersible sewage pump.
The large material sorter 4 includes: material entry, impurity export and material export. The material inlet and the material outlet are respectively connected with the receiving hopper 1 and the vertical crushing pulping machine 5 through the screw conveyer, and the impurities of the large materials are transported and processed.
The vertical crushing pulper 5 comprises a pulp inlet, a water phase inlet and a pulp outlet. The slurry inlet and outlet are respectively connected with the large material separator 4 and the sand settling machine 6 through the screw conveyer, the water phase inlet is connected with the water phase outlet of the three-phase separator, and light impurities are transported out.
Sand setting machine 6 includes: slurry inlet, overflow launder and sand discharge mouth. The slurry inlet is connected with a vertical crushing pulping machine 5 through a screw conveyer, the overflow groove is connected with a first slurry pool 7 through a pipeline, and heavy particle impurities are discharged through a sand discharge port. The solid content of the fed material of the sand settling machine 6 is not more than 10 percent, and the temperature is not lower than 40 ℃.
The first slurry tank 7 includes: a leachate inlet, a slurry inlet and a slurry outlet. The percolate inlet and the slurry inlet are respectively connected with the percolate pool 2 and the sand setting machine 6 through pipelines; the slurry outlet is provided with at least 2 slurry pumps, part of the slurry flows back to the feeding screw conveyer of the sand settling machine 6, and the rest part of the slurry is conveyed to the impurity removing machine 8.
The shaker 8 comprises: a slurry inlet, a slurry outlet and an impurity outlet. The slurry inlet and the slurry outlet are respectively connected with the first slurry pool 7 and the second slurry pool 9 through pipelines, and impurities are transported out.
The second slurry tank 9 comprises: a slurry inlet and a slurry outlet. The slurry inlet is connected with the impurity remover 8, the slurry outlet is provided with at least 2 slurry pumps, and the slurry is conveyed to the steam ejector 10.
The steam ejector 10 includes: a slurry inlet, a steam inlet, and a slurry outlet. The slurry inlet is connected to a second slurry tank 9 and the slurry outlet is connected to a digester 11.
The cooking pot 11 includes: agitating unit, thick liquid inlet, steam inlet and thick liquid export. The slurry inlet is connected with a cooking ejector 10, the slurry outlet is provided with at least 2 slurry pumps, and the slurry is conveyed to a three-phase separator 12.
The three-phase separator 12 includes: a slurry inlet, an oil phase outlet, a water phase outlet and a solid phase outlet; wherein, the thick liquid entry is connected with the cooking tank, and the crude grease that separates in the thick liquid is carried to grease storage tank 13 through the pump, and the aqueous phase of separation partly flows back to vertical broken pulping machine 5, and inside water cyclic utilization does not need outside water feeding, saves the water resource, also reduces follow-up waste water treatment capacity, and remaining part aqueous phase passes through the pump and carries to homogenate jar 14.
Examples
Adopt the utility model discloses pretreatment systems handles kitchen garbage (10t/h, TS ═ 15%), mainly includes following step:
(1) and (3) processing a material receiving unit:
kitchen waste (10t/h, TS ═ 15%) is collected intoAfter the plant is metered, the mixture enters a receiving hopper with the volume of 50m3. The odor generated by the kitchen waste in the stacking process is collected in the sealed gas-collecting hood 3 at the top of the receiving hopper 1 under the action of negative pressure. The resulting percolate (4t/h, TS ═ 5%) flows via the drainage opening at the lower end of the receiving funnel 1 to the percolate storage 2. The residual kitchen waste (6t/h, TS ═ 21.7%) in the receiving hopper 1 is conveyed to the bulk material sorter 4 via a screw conveyor.
(2) And (3) treatment by a screening pulping unit:
the kitchen waste (6t/h, TS ═ 21.7%) from the receiving hopper 1 is sorted into two parts in the bulk sorter 4: one part is impurities (1t/h, TS is 40%) with the diameter larger than 60mm, such as bottles, pop-top cans, plastic bags and the like; the other part was the remaining material (5t/h, TS 18%). The sorted materials are conveyed to a vertical crushing pulping machine 5 through a screw conveyor, a small amount of impurities (0.1t/h, TS (65%)) can be separated in the crushing pulping process of the materials, the balance is uniform pulp (8.4t/h, TS (12.4%), the maximum particle size in the materials is not more than 10mm, and the particle size of most of the materials is less than 2 mm. Slurry after vertical crushing enters a sand settling machine in a self-flowing mode, in order to ensure the requirement of raw materials at an inlet of the sand settling machine, circulating slurry (20t/h, TS (equal to 8.8%) from a first slurry tank 7 needs to be added at a conveying stage, and after mixing, the mixed slurry amount is 28.4t/h, and the solid content is 9.9%.
(3) Sand setting unit treatment:
the slurry (28.4t/h, TS ═ 9.9%) can remove heavy-substance impurities such as sand in the sand setting machine 6 (0.3t/h, TS ═ 50%), the residual slurry (28.1t/h, TS ═ 9.6%) in the sand setting machine 6 flows out in an overflow mode and is conveyed to the first slurry tank 7 for temporary storage, furthermore, the percolate (4t/h, TS ═ 5%) in the percolate tank 2 is conveyed to the first slurry tank by a pump, after being uniformly mixed in the tank, part of the slurry (20t/h, TS ═ 8.8%) flows back to the sand setting machine feeding screw, and the residual slurry (12.5t/h, TS ═ 8.8%) is conveyed to the impurity removing machine by a slurry pump.
(4) Impurity removal unit treatment:
the slurry (12.5t/h, TS ═ 8.8%) was freed from small amounts of impurities such as plastic flakes and fibers in a cleaner 8 (0.5t/h, TS ═ 40%), and the remaining slurry (12t/h, TS ═ 7.5%) was passed from the second slurry tank 9 to a steam ejector 10 by a slurry pump.
(5) Treating by a cooking oil removal unit:
the slurry (12t/h, TS ═ 7.5%) is heated to 70-80 ℃ by steam (0.62t/h) in a steam ejector 10, and then enters a cooking pot 11 for buffering for about 1.5h, then the slurry (12.62t/h, TS ═ 7.1%) is pumped into a three-phase separator 12 and is separated into three phases of oil, water and solid by centrifugation, wherein a part of water phase (3.5t/h, TS ═ 6%) flows back to a vertical crushing pulping machine 5, the rest of water phase (11.72t/h, TS ═ 6%) and solid phase (0.6t/h, TS ═ 28%) are pumped into a homogenizing pot 14, and the oil phase (0.3t/h) enters a grease storage pot 13.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a pretreatment systems suitable for kitchen garbage anaerobic fermentation handles which characterized in that includes:
the device comprises a material receiving unit, a screw conveyor, a screening and pulping unit, a slurry conveying pump, a sand setting unit, a first slurry pump, an impurity removing unit, a second slurry pump and a cooking and oil removing unit; wherein,
the material receiving unit is provided with a kitchen waste inlet, a material outlet and a percolate output pipe, wherein the material outlet is sequentially connected with a screw conveyor, a high-pressure extrusion screening pulping unit, a slurry conveying pump, a sand settling unit, a first slurry pump, an impurity removal unit, a second slurry pump and a cooking oil removal unit;
a percolate output pipe of the receiving unit is connected with the sand setting unit;
the outlet of the sand settling unit is connected to the inlet of the sand settling unit through a pipeline;
the cooking oil removal unit is respectively provided with an oil phase outlet, a water phase outlet and a solid phase outlet, and the water phase outlet is connected to the screening pulping unit through a return pipe.
2. The pretreatment system suitable for anaerobic fermentation treatment of kitchen waste according to claim 1, wherein said receiving unit comprises:
a receiving hopper and an infiltration liquid pool;
the kitchen waste inlet is arranged at the upper part of the side wall of the receiving hopper, and the discharge hole is arranged at the bottom of the side wall of the receiving hopper;
the top of the receiving hopper is provided with a sealed gas-collecting hood for collecting odor;
a percolate outlet is formed in the bottom of the receiving hopper, the percolate pool is arranged below the percolate outlet, and the percolate outlet corresponds to an upper opening of the percolate pool;
a percolate output pipe is connected in the percolate tank and is connected with the first slurry tank of the sand setting unit;
and a stirring device is arranged in the percolate pond.
3. The pretreatment system suitable for anaerobic fermentation treatment of kitchen waste according to claim 1 or 2, characterized in that said screening pulping unit comprises:
a large material separator and a vertical crushing pulping machine; wherein,
the large material sorting machine is sequentially connected with the vertical crushing pulping machine;
and the front-end inlet of the vertical crushing pulping machine is connected with a return pipe connected with the water phase outlet of the cooking oil removal unit.
4. The pretreatment system suitable for anaerobic fermentation treatment of kitchen waste according to claim 1 or 2, wherein said sand settling unit comprises:
a sand settling machine and a first slurry tank; wherein,
the sand settling machine is sequentially connected with the first slurry pool;
an outlet of the first slurry pool is connected with a first slurry pump and then is respectively connected with the impurity removal unit and an inlet of the sand settling machine through pipelines;
and a stirring device is arranged in the first slurry pool.
5. The pretreatment system suitable for anaerobic fermentation treatment of kitchen waste according to claim 1 or 2, wherein said sand settling unit comprises:
the impurity removing machine and the second slurry pool; wherein,
the impurity removing machine is sequentially connected with the second slurry pool;
and a stirring device is arranged in the second slurry pool.
6. The pretreatment system for anaerobic fermentation treatment of kitchen waste according to claim 1, wherein said cooking oil removal unit comprises:
a steam ejector, a cooking pot and a three-phase separator; wherein,
the steam ejector, the cooking pot and the three-phase separator are sequentially connected;
the front end of the steam ejector is provided with a slurry inlet;
the three-phase separator is respectively provided with an oil phase outlet, a water phase outlet and a solid phase outlet.
7. The pretreatment system suitable for anaerobic fermentation treatment of kitchen waste according to claim 6, further comprising:
a grease storage tank and a homogenate tank; wherein,
the grease storage tank is connected with an oil phase outlet of the three-phase separator;
the slurry homogenizing tank is connected with the water phase outlet of the three-phase separator;
and a stirring device is arranged in the slurry homogenizing tank.
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Cited By (6)
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CN111099781A (en) * | 2019-12-31 | 2020-05-05 | 北京嘉博文生物科技有限公司 | Pretreatment device and method for kitchen waste leachate |
CN112170443A (en) * | 2020-08-17 | 2021-01-05 | 广州环投设计研究院有限公司 | Food and beverage refuse treatment and processing system who burns factory and combine together |
CN113020216A (en) * | 2021-03-11 | 2021-06-25 | 江苏欧尔润生物科技有限公司 | Method for recycling kitchen garbage and performing centralized treatment mode |
CN113102095A (en) * | 2021-03-10 | 2021-07-13 | 长沙工研院环保有限公司 | Hydraulic flotation anaerobic fermentation treatment system for kitchen waste |
CN113714260A (en) * | 2021-09-06 | 2021-11-30 | 华东理工大学 | Kitchen waste sand and oil removing pretreatment method and device |
CN115026097A (en) * | 2022-07-06 | 2022-09-09 | 眉山市城投中恒能环保科技有限公司 | Kitchen organic slurry treatment process |
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2018
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111099781A (en) * | 2019-12-31 | 2020-05-05 | 北京嘉博文生物科技有限公司 | Pretreatment device and method for kitchen waste leachate |
CN112170443A (en) * | 2020-08-17 | 2021-01-05 | 广州环投设计研究院有限公司 | Food and beverage refuse treatment and processing system who burns factory and combine together |
CN113102095A (en) * | 2021-03-10 | 2021-07-13 | 长沙工研院环保有限公司 | Hydraulic flotation anaerobic fermentation treatment system for kitchen waste |
CN113020216A (en) * | 2021-03-11 | 2021-06-25 | 江苏欧尔润生物科技有限公司 | Method for recycling kitchen garbage and performing centralized treatment mode |
CN113714260A (en) * | 2021-09-06 | 2021-11-30 | 华东理工大学 | Kitchen waste sand and oil removing pretreatment method and device |
CN115026097A (en) * | 2022-07-06 | 2022-09-09 | 眉山市城投中恒能环保科技有限公司 | Kitchen organic slurry treatment process |
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