CN111606547A - Municipal sludge treatment method and equipment - Google Patents
Municipal sludge treatment method and equipment Download PDFInfo
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- CN111606547A CN111606547A CN202010307755.1A CN202010307755A CN111606547A CN 111606547 A CN111606547 A CN 111606547A CN 202010307755 A CN202010307755 A CN 202010307755A CN 111606547 A CN111606547 A CN 111606547A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
- C02F11/145—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances using calcium compounds
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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Abstract
The invention discloses a municipal sludge treatment method and equipment. According to the municipal sludge treatment method, biomass and a sludge conditioner are sequentially added into sludge, the mixture is uniformly mixed and then subjected to subcritical water reaction, and the reacted sludge is discharged under pressure. The municipal sludge treatment equipment comprises a sludge conveying mechanism and a subcritical water reaction system, wherein a conveying opening of the sludge conveying mechanism is communicated with a feeding opening of the subcritical water reaction system. According to the municipal sludge treatment method, the sludge conditioner and the biomass are added, so that heavy metals in the sludge are diluted, and are sealed or passivated, harmful organic matters are decomposed, and the sludge can be subjected to aerobic fermentation and then land utilization such as soil improvement and landscaping, and resource utilization is realized. The equipment of the invention solves the problems of difficult deep dehydration and high cost.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a municipal sludge treatment method and equipment.
Background
Municipal sludge is an inevitable product in a sewage treatment plant and an accessory after sewage treatment, is an extremely complex heterogeneous body consisting of organic debris, bacterial thallus, inorganic particles, colloid and the like, has the water content of about 80 percent, is large in volume and difficult to treat, is removed by manual drying, mechanical dewatering or heat treatment for deep dewatering, and has high treatment cost. Meanwhile, the treatment rate of industrial water sources is low, heavy metals cannot be removed in a sewage treatment stage, the content of the heavy metals in sludge is high, and resource utilization approaches are limited to a certain extent. According to Yang et al, 84% of the sludge in our country is disposed of by improper dumping, the remaining 13% is landfilled, 2% is land used, 0.4% is burned and 0.2% is used as a production building material, these four disposal methods cost about 72-96 $/t (DT), 240-280 $/t (DT), 240-260-. Therefore, how to carry out reduction, harmless, stabilization and resource treatment on municipal sludge with huge yield and complex components becomes a hot spot of research economically and effectively.
Disclosure of Invention
The invention aims to provide a municipal sludge treatment method and equipment for reducing, detoxifying, stabilizing and recycling municipal sludge with complex components in order to overcome the defects in the prior art
According to the municipal sludge treatment method, biomass and a sludge conditioner are sequentially added into sludge, the mixture is uniformly mixed and then subjected to subcritical water reaction, and the reacted sludge is discharged under pressure.
Preferably, the mass ratio of the biomass to the absolutely dry matter of the sludge is 0.1-0.3: 1.
Preferably, the mass of the sludge conditioner is 0.5-1% of the mass of the absolutely dry matter of the sludge.
Preferably, the sludge conditioner comprises a calcareous material, a pozzolanic active material and an iron salt.
Preferably, the calcareous material comprises carbide slag or/and lime, and the pozzolanic active material comprises one or more of fly ash, coal gangue, slag powder or pozzolan.
Preferably, the biomass may include straw, dregs, rice bran, food waste or leaves.
Preferably, the mass ratio of the calcareous material to the pozzolanic active material to the iron salt is 40-60: 30-45: 1 to 10.
Preferably, the temperature of the subcritical water reaction is 180-230 ℃, and the pressure is 1.6-2.2 MP.
The municipal sludge treatment equipment comprises a sludge conveying mechanism and a subcritical water reaction system, wherein a conveying opening of the sludge conveying mechanism is communicated with a feeding opening of the subcritical water reaction system.
Preferably, the subcritical water reaction system comprises a steam providing device, a subcritical water reaction kettle and a steam recovery device, the steam providing device is communicated with the inside of the subcritical water reaction kettle, and a conveying port of the sludge conveying mechanism is communicated with a feed port of the subcritical water reaction kettle; the subcritical water reaction system further comprises a steam recovery device, and the steam recovery device comprises a buffer tank, a gas-liquid separator, a condenser and a liquid collection box; and the gas outlet of the subcritical water reaction kettle is communicated with the buffer tank and the gas-liquid separator sequentially through pipelines, the gas outlet of the gas-liquid separator is communicated with the condenser and the liquid collecting box sequentially through pipelines, and the liquid outlet of the gas-liquid separator is communicated with the liquid collecting box sequentially through pipelines.
Preferably, the sludge conveying mechanism comprises a storage box, a first conveying mechanism, a mixing mechanism, a batching and adding mechanism and a second conveying mechanism; mixing mechanism includes first feed inlet, second feed inlet and the discharge gate that is linked together rather than inside, first conveying mechanism's transport initial end sets up the below of the discharge opening of storage case, first conveying mechanism's transport terminal with mixing mechanism's first feed inlet is linked together, in order to incite somebody to action the material of storage case is carried extremely in the mixing mechanism, the batching add the feed opening of mechanism with the second feed inlet is linked together, second conveying mechanism's transport initial end sets up the below of mixing mechanism's discharge gate.
The subcritical water treatment process and the subcritical water treatment equipment solve the problems of difficulty in deep dehydration and high cost. The sludge contains a large amount of organic matters and microorganisms, and after high-temperature and high-pressure homogeneous treatment, intracellular water, capillary water and combined water of the microorganisms in the sludge and adsorbed water on the surface of the organic matters are released in a large amount and are easy to dehydrate. Although the reaction temperature of subcritical water treatment is higher than the temperature of evaporation drying, the total energy consumption of the system is far lower than that of the evaporation drying process because the water in the sludge does not change phase in the reaction process, and the energy conservation of the system is realized. In addition, if the two devices are used together, the residual steam is collected by discharging under pressure, so that the energy is recycled in a gradient manner, and the treatment cost can be greatly saved.
The subcritical water treatment process and equipment provided by the invention solve the problem that the subsequent resource treatment of sludge, namely the hydrolysis speed limit of aerobic fermentation organic matters is influenced. Macromolecular organic matters in the sludge are hydrolyzed into micromolecular substances under the catalytic action of subcritical water, so that the problem of limit of hydrolysis of the organic matters in subsequent resource utilization is effectively solved. Meanwhile, in the treatment process, the material is discharged under pressure at last to evaporate and expand condensed water in the fiber cells, so that a cellulose crystal structure is broken, organic matters which are difficult to decompose are broken, the product structure is fluffy, and nutrient substances flow out. The sludge treated by subcritical water is thoroughly sterilized, and a favorable living environment is provided for inoculated zymophyte.
A certain amount of biomass is added into the sludge to adjust the water content of the sludge, along with the rise of temperature and pressure, a small amount of volatile organic matters in the sludge volatilize, partial organic matters are hydrolyzed to generate carbon dioxide and enter a gas phase, the original water-insoluble macromolecular organic matters are dissolved in water and cell wall breaking under the conditions of high temperature and high pressure, the reduction rate of the sludge is about 30 percent in the processes of dissolving the organic matters in the water and the like. The total nutrient (TN + TP + TK) is improved.
The collisions between the particles cause the colloidal structure to break down, allowing bound water and solid particles to separate. The protein in the sludge is decomposed by heating, the cells are broken, the water in the cells is released, the proportion of free water in the sludge is increased, the water content of the treated sludge can be reduced to about 55 percent after the treated sludge is placed in the nature for 24 hours, and favorable conditions are provided for subsequent aerobic fermentation.
The sludge conditioner with a certain proportion is added aiming at the sludge with heavy metals exceeding the standard, heavy metals are passivated, meanwhile, the high temperature and high pressure have a degradation effect on toxic and harmful organic matters, the ionic product constant of subcritical water is thousands of times higher than that of normal water, so that the toxic and harmful organic matters such as polychlorinated biphenyl and the like can be dissolved in water, and then the pyrohydrolysis is carried out under the catalytic action of water molecules to generate organic matters with small molecules, thereby widening the resource utilization way.
If the sludge after subcritical water pretreatment is subjected to aerobic fermentation, compared with the traditional fermentation time, the fermentation period can be shortened from about 30 days to 7 days, and the problems of long aerobic fermentation period and the like are effectively solved.
According to the method, the condensed water in the fiber cells is evaporated and expanded by discharging under pressure finally, the cellulose crystal structure is broken, so that the wall breaking effect on organic matters which are difficult to decompose is good, the product structure is fluffy, the organic matters and nutrient substances flow out, and the organic matters and the nutrient substances are hydrolyzed into micromolecule substances under the catalytic action of subcritical water, and the problem of organic matter hydrolysis speed limit in subsequent resource utilization is effectively solved.
According to the municipal sludge treatment method, the sludge conditioner and the biomass are added, so that heavy metals in the sludge are diluted, and are sealed or passivated, harmful organic matters are decomposed, and the sludge can be subjected to aerobic fermentation and then land utilization such as soil improvement and landscaping, and resource utilization is realized.
Drawings
FIG. 1 is a schematic view of a municipal sludge treatment apparatus of the present invention.
1-a sludge conveying mechanism; 11. a material storage box; 111. a discharge opening; 112. a base plate; 113. a manual operation port; 114. a grid plate; 115. a breaking device; 1151. beating up; 1152. a second driving member; 12. a first conveying mechanism; 121. a first screw conveyor; 122. a metering screw conveyor; 13. a mixing mechanism; 131. a mixing tank; 1311. a first feed port; 1312. a second feed port; 1313. a discharge port; 132. a stirring device; 1321. a stirring paddle; 1322. a first driving member; 14. a ingredient adding mechanism; 141. a feeding pipe; 141a, an outlet end; 141b, an inlet end; 142. a feeding hopper; 143. a metering belt conveyor; 144. an emergency gate valve; 145. a star discharger; 15. a second conveying mechanism; 151. a second screw conveyor; 2-a subcritical water reaction system; 21-a steam providing device; 22-subcritical water reaction kettle; 23-a vapor recovery unit; 231-a buffer tank; 232-gas-liquid separator; 233-a condenser; 234-liquid collection tank.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example 1
1t (the water content is 85%) of municipal sludge, 300kg of biomass (dregs of a decoction) and 2kg of conditioner are uniformly mixed and then are conveyed to a subcritical water reaction kettle 22 through a sludge conveying mechanism 1, steam is introduced into the subcritical water reaction kettle 22, the temperature is adjusted to 180 ℃, the pressure is 1.6MPa, a stirrer is started to stir so as to be uniformly heated, and the reaction lasts for 60 min. After the reaction is completed, the mixture is discharged to the next disposal.
The water content of the treated sludge can be reduced to 50 percent after the treated sludge is placed in the nature for 24 hours, and favorable conditions are provided for subsequent aerobic fermentation.
And aerobic fermentation is carried out, compared with the traditional fermentation time, the fermentation period can be shortened from about 30 days to 7 days, and the problems of long aerobic fermentation period and the like are effectively solved.
Example 2
1t (the water content is 85%) of municipal sludge, 300kg of biomass (dregs of a decoction) and 2kg of conditioner are uniformly mixed and then are conveyed to a subcritical water reaction kettle 22 through a sludge conveying mechanism 1, steam is introduced into the subcritical water reaction kettle 22, the temperature is adjusted to 230 ℃, the pressure is adjusted to 2.2MPa, a stirrer is started to stir so as to be uniformly heated, and the reaction lasts for 30 min. After the reaction is completed, the mixture is discharged to the next disposal.
The water content of the treated sludge can be reduced to 52 percent after the treated sludge is placed in the nature for 24 hours, thereby providing favorable conditions for subsequent aerobic fermentation.
And aerobic fermentation is carried out, compared with the traditional fermentation time, the fermentation period can be shortened from about 30 days to 7 days, and the problems of long aerobic fermentation period and the like are effectively solved.
Example 3
1t (the water content is 85%) of municipal sludge, 100kg of biomass (dregs of a decoction) and 1kg of conditioner are uniformly mixed and then are conveyed to a subcritical water reaction kettle 22 through a sludge conveying mechanism 1, steam is introduced into the subcritical water reaction kettle 22, the temperature is adjusted to 180 ℃, the pressure is adjusted to 1.6MPa, a stirrer is started to stir so as to be uniformly heated, and the reaction lasts for 60 min. After the reaction is completed, the mixture is discharged to the next disposal.
The water content of the treated sludge can be reduced to 51 percent after the treated sludge is placed in the nature for 24 hours, thereby providing favorable conditions for subsequent aerobic fermentation.
And aerobic fermentation is carried out, compared with the traditional fermentation time, the fermentation period can be shortened from about 30 days to 7 days, and the problems of long aerobic fermentation period and the like are effectively solved.
Example 4
1t (the water content is 85%) of municipal sludge, 100kg of biomass (dregs of a decoction) and 1kg of conditioner are uniformly mixed and then are conveyed to a subcritical water reaction kettle 22 through a sludge conveying mechanism 1, steam is introduced into the subcritical water reaction kettle 22, the temperature is adjusted to 230 ℃, the pressure is adjusted to 2.2MPa, a stirrer is started to stir so as to be uniformly heated, and the reaction lasts for 30 min. After the reaction is completed, the mixture is discharged to the next disposal.
The water content of the treated sludge can be reduced to 55 percent after the treated sludge is placed in the nature for 24 hours, thereby providing favorable conditions for subsequent aerobic fermentation.
And aerobic fermentation is carried out, compared with the traditional fermentation time, the fermentation period can be shortened from about 30 days to 7 days, and the problems of long aerobic fermentation period and the like are effectively solved.
Table 1: tables of subcritical Water reaction temperature, time and Effect after treatment in examples
As can be seen from the table: the sludge reduction rate reaches about 30 percent, and the total nutrients (TN + TP + TK) are improved.
Wherein, the subcritical water reaction kettle 22 in the application is a Chinese patent with application number ZL 201320047704.5.
As shown in figure 1, the municipal sludge treatment equipment comprises a sludge conveying mechanism 1 and a subcritical water reaction system 2, wherein a conveying port of the sludge conveying mechanism 1 is communicated with a feeding port of the subcritical water reaction system 2.
There are various configurations of subcritical water reaction system 2, and it is not limited herein, and in this embodiment, subcritical water reaction system 2 may include steam supply device 21 and subcritical water reaction kettle 22, steam supply device 21 communicates with the inside of subcritical water reaction kettle 22, and the delivery port of sludge delivery mechanism 1 communicates with the feed port of subcritical water reaction kettle 22. After being uniformly mixed, the sludge is conveyed to a subcritical water reaction kettle 22 through a sludge conveying mechanism 1, steam is introduced into the subcritical water reaction kettle 22 through a steam supply device 21, the temperature and the pressure are adjusted to preset values, a stirrer is started to stir so as to be uniformly heated, and the reaction is carried out for a period of time.
Subcritical water reaction system 2 may further include vapor recovery device 23, and vapor recovery device 23 includes buffer tank 231, gas-liquid separator 232, condenser 233, and liquid collection tank 234; the gas outlet of the subcritical water reaction kettle 22 is communicated with the buffer tank 231 and the gas-liquid separator 232 sequentially through pipelines, the gas outlet of the gas-liquid separator 232 is communicated with the condenser 233 and the liquid collection tank 234 sequentially through pipelines, and the liquid outlet of the gas-liquid separator 232 is communicated with the liquid collection tank 234 through pipelines, so that steam can be recycled, and the environment is protected.
As shown in fig. 1, the sludge conveying mechanism 1 of the present invention includes a storage tank 11, a first conveying mechanism 12, a mixing mechanism 13, a dosing mechanism 14 and a second conveying mechanism 15; the mixing mechanism 13 comprises a first feeding hole 1311, a second feeding hole 1312 and a discharging hole 1313 which are communicated with the interior of the mixing mechanism 13, the conveying starting end of the first conveying mechanism 12 is arranged below the discharging hole 111 of the storage box 11, the conveying tail end of the first conveying mechanism 12 is communicated with the first feeding hole 1311 of the mixing mechanism 13 so as to convey the materials in the storage box 11 to the mixing mechanism 13, the discharging hole of the ingredient adding mechanism 14 is communicated with the second feeding hole 1312, and the conveying starting end of the second conveying mechanism 15 is arranged below the discharging hole 1313 of the mixing mechanism 13.
According to the invention, the materials are conveyed to the mixing mechanism 13 through the first conveying mechanism 12, the ingredients are added to the mixing mechanism 13 through the ingredients adding mechanism 14 and are mixed with the materials, and then the mixed materials are conveyed to the next station through the second conveying mechanism 15 for next operation, so that manual feeding is not needed, time and labor are saved, the labor intensity of people is greatly reduced, and the working efficiency is improved.
The structure of the mixing mechanism 13 is various, and is not limited herein, in this embodiment, the mixing mechanism 13 may include a mixing tank 131 and a stirring device 132, a first feeding hole 1311 and a second feeding hole 1312 are disposed at the top end of the mixing tank 131, and a discharging hole 1313 is disposed at the bottom end of the mixing tank 131; the stirring device 132 includes a stirring paddle 1321 and a first driving member 1322, one end of the stirring paddle 1321 is disposed in the mixing tank 131, and the other end passes through the mixing tank 131 and is in transmission connection with the first driving member 1322. The materials are added into the mixing tank 131 through the first material inlet 1311, the ingredients are added into the second material inlet 1312, and the stirring paddle 1321 is driven to rotate by the first driving member 1322, so that the materials and the ingredients are uniformly mixed in the mixing tank 131.
The first conveying mechanism 12 has various structures, which are not limited herein, and in this embodiment, the first conveying mechanism 12 may include a first screw conveyor 121 and a metering screw conveyor 122, a conveying start end of the metering screw conveyor 122 is disposed below the discharge opening 111 of the storage bin 11, a conveying end of the metering screw conveyor 122 is disposed at the conveying start end of the first screw conveyor 121, and the conveying end of the first screw conveyor 121 is disposed above the first feed opening 1311. The material quality entering the mixing tank 131 is controlled by the metering screw conveyor 122, the mixing tank can also comprise a speed reducer and a motor which are matched with the metering screw conveyor 122, the mixing tank is connected with the motor through a chain, the discharging speed can be adjusted according to different materials and batching proportion, and the frequency conversion is adjustable. The metered material is delivered to the mixing tank 131 by the first screw conveyor 121.
The bottom plate 112 of the material storage box 11 can be inverted V-shaped and is strip-shaped, two ends of the bottom plate 112 are fixed on the side wall of the material storage box 11, two sides of the bottom plate 112 are both spaced from the side wall of the material storage box 11 to form a discharge opening 111, and the side wall of the material storage box 11 is further provided with a manual operation opening 113 communicated with the inside of the material storage box 11. Because some materials have viscidity and extrusion scheduling problem, very easily cause phenomenons such as knot arch, putty, consequently, the bottom plate 112 of storage case 11 can be for falling the V-arrangement, can effectively guarantee the unloading smoothly under the prerequisite of guaranteeing storage case 11 capacity, for convenient the maintenance, is equipped with manual operation mouth 113 at the lateral wall of storage case 11.
The top end of the storage box 11 is open, a grid plate 114 can be further arranged at the open, and the grid plate 114 is arranged at the top end of the storage box 11 and mainly used for removing large-particle impurities.
The storage bin 11 may also be provided with a breaker 115 for dispersing the contents. In order to prevent the materials from being bonded and not easy to fall, the materials are scattered by the scattering device 115 and enter the bottom of the storage box 11.
The breaking device 115 has various structures, which are not limited herein, and in this embodiment, the breaking device 115 may include a breaking paddle 1151 and a second driving member 1152, one end of the breaking paddle 1151 is horizontally disposed in the storage tank 11, and the other end passes through the storage tank 11 and is in transmission connection with the second driving member 1152. The second drive 1152 drives the break-up paddles 1151 to rotate, breaking up the material entering from the grate bars 114.
The second conveying mechanism 15 has various structures, which are not limited herein, and in this embodiment, the second conveying mechanism 15 may include a second screw conveyor 151, and a conveying start end of the second screw conveyor 151 is disposed below the discharge port 1313 of the mixing tank 131. The conveying end of the second screw conveyor 151 is disposed at the next station.
The structure of the ingredient adding mechanism 14 is various, and is not limited herein, in this embodiment, the ingredient adding mechanism 14 may include an adding pipe 141 and at least one adding hopper 142, the adding pipe 141 includes an outlet end 141a and at least one inlet end 141b, the outlet end 141a is fixedly connected to the second feeding hole 1312 of the mixing tank 131, the adding hoppers 142 are in one-to-one correspondence with the inlet ends 141b, each adding hopper 142 adds different ingredients, and the adding pipe 141 includes at least one inlet end 141b, which may avoid providing too many feeding holes on the mixing tank 131.
In this embodiment, the ingredient adding mechanism 14 includes an adding pipe 141, two adding hoppers 142 and a metering belt conveyor 143, the adding pipe 141 is vertically disposed on the second feeding hole 1312, the adding pipe 141 includes two inlet ends 141b, both the inlet ends 141b are provided with emergency gate valves 144, a lower portion of one adding hopper 142 is fixedly disposed on one inlet end 141b, the inlet end 141b is provided with a star discharger 145, a lower portion of the other adding hopper 142 is disposed above a conveying start end of the metering belt conveyor 143, and a conveying end of the metering belt conveyor 143 is disposed above the other inlet end 141 b. For example: the utility model provides a batching is powdered material, throws after metering through star type tripper 145 and adds to mixing mechanism 13, and 90 degrees rotations are done in the valve body to star type tripper 145 through the circular shape star type discharge valve of journey valve rod drive and flow is adjusted to another kind of batching, throws after the metering of measurement band conveyer 143 and adds to mixing mechanism 13, for conveniently adding and clearance batching, first import and second import can all set up emergent push-pull valve 144.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A municipal sludge treatment method is characterized in that: and sequentially adding biomass and a sludge conditioner into the sludge, uniformly mixing, performing subcritical water reaction, and discharging the reacted sludge under pressure.
2. The municipal sludge treatment method according to claim 1, wherein: the mass ratio of the biomass to the absolutely dry matter of the sludge is 0.1-0.3: 1.
3. The municipal sludge treatment method according to claim 1, wherein: the mass of the sludge conditioner is 0.5-1% of the mass of the absolutely dry matter of the sludge.
4. The municipal sludge treatment method according to claim 1, wherein: the sludge conditioner comprises a calcareous material, a pozzolanic active material and an iron salt.
5. The municipal sludge treatment method according to claim 4, wherein: the calcareous material comprises carbide slag or/and lime, and the volcanic ash active material comprises one or more of fly ash, coal gangue, slag powder or volcanic ash.
6. A municipal sludge treatment method according to claim 4 or 5, wherein: the mass ratio of the calcareous material to the pozzolanic active material to the ferric salt is (40-60): 30-45: 1 to 10.
7. A municipal sludge treatment method according to any one of claims 1 to 5, wherein: the temperature of the subcritical water reaction is 180-230 ℃, and the pressure is 1.6-2.2 MP.
8. The utility model provides a municipal sludge treatment equipment which characterized in that: the device comprises a sludge conveying mechanism (1) and a subcritical water reaction system (2), wherein a conveying opening of the sludge conveying mechanism (1) is communicated with a feeding opening of the subcritical water reaction system (2).
9. The municipal sludge treatment apparatus of claim 8, wherein: the subcritical water reaction system (2) comprises a steam providing device (21), a subcritical water reaction kettle (22) and a steam recovery device (23), wherein the steam providing device (21) is communicated with the inside of the subcritical water reaction kettle (22), and a conveying opening of the sludge conveying mechanism (1) is communicated with a feeding opening of the subcritical water reaction kettle (22); the steam recovery device (23) comprises a buffer tank (231), a gas-liquid separator (232), a condenser (233) and a liquid collection tank (234); the gas outlet of the subcritical water reaction kettle (22) is communicated with the buffer tank (231) and the gas-liquid separator (232) sequentially through pipelines, the gas outlet of the gas-liquid separator (232) is communicated with the condenser (233) and the liquid collecting box (234) sequentially through pipelines, and the liquid outlet of the gas-liquid separator (232) is communicated with the liquid collecting box (234) sequentially through pipelines.
10. The municipal sludge treatment apparatus of claim 8 or 9, wherein: the sludge conveying mechanism (1) comprises a storage box (11), a first conveying mechanism (12), a mixing mechanism (13), a batching and adding mechanism (14) and a second conveying mechanism (15); the mixing mechanism (13) comprises a first feeding hole (1311), a second feeding hole (1312) and a discharging hole (1313) which are communicated with the interior of the mixing mechanism, the conveying starting end of the first conveying mechanism (12) is arranged below the discharging hole (111) of the storage box (11), the conveying tail end of the first conveying mechanism (12) is communicated with the first feeding hole (1311) of the mixing mechanism (13) so as to convey the materials of the storage box (11) into the mixing mechanism (13), the discharging hole of the ingredient adding mechanism (14) is communicated with the second feeding hole (1312), and the conveying starting end of the second conveying mechanism (15) is arranged below the discharging hole (1313) of the mixing mechanism (13).
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060183951A1 (en) * | 2002-10-22 | 2006-08-17 | Hiroyuki Yoshida | Method for producing methane gas |
| CN102198387A (en) * | 2010-03-24 | 2011-09-28 | 淮北中润生物能源技术开发有限公司 | Continuous reaction system taking subcritical or supercritical liquid as solvent and solid as reactant |
| CN102557366A (en) * | 2012-01-09 | 2012-07-11 | 新奥科技发展有限公司 | Sludge treatment method and application thereof |
| CN102603144A (en) * | 2012-03-23 | 2012-07-25 | 上海交通大学 | Subcritical hydrothermal equipment for sludge treatment |
| CN203095819U (en) * | 2013-01-31 | 2013-07-31 | 路德环境科技股份有限公司 | Sludge subcritical water reaction kettle |
| CN106865926A (en) * | 2017-03-09 | 2017-06-20 | 中交疏浚技术装备国家工程研究中心有限公司 | One kind has filled municipal sludge curing agent and its deep dehydration method |
| CN108585397A (en) * | 2018-07-03 | 2018-09-28 | 江苏聚业机械装备股份有限公司 | Sludge environment-friendly handles integration apparatus and its treatment process |
| CN109225031A (en) * | 2018-11-08 | 2019-01-18 | 榆林学院 | A kind of sludge agitation conveying device |
-
2020
- 2020-04-17 CN CN202010307755.1A patent/CN111606547A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060183951A1 (en) * | 2002-10-22 | 2006-08-17 | Hiroyuki Yoshida | Method for producing methane gas |
| CN102198387A (en) * | 2010-03-24 | 2011-09-28 | 淮北中润生物能源技术开发有限公司 | Continuous reaction system taking subcritical or supercritical liquid as solvent and solid as reactant |
| CN102557366A (en) * | 2012-01-09 | 2012-07-11 | 新奥科技发展有限公司 | Sludge treatment method and application thereof |
| CN102603144A (en) * | 2012-03-23 | 2012-07-25 | 上海交通大学 | Subcritical hydrothermal equipment for sludge treatment |
| CN203095819U (en) * | 2013-01-31 | 2013-07-31 | 路德环境科技股份有限公司 | Sludge subcritical water reaction kettle |
| CN106865926A (en) * | 2017-03-09 | 2017-06-20 | 中交疏浚技术装备国家工程研究中心有限公司 | One kind has filled municipal sludge curing agent and its deep dehydration method |
| CN108585397A (en) * | 2018-07-03 | 2018-09-28 | 江苏聚业机械装备股份有限公司 | Sludge environment-friendly handles integration apparatus and its treatment process |
| CN109225031A (en) * | 2018-11-08 | 2019-01-18 | 榆林学院 | A kind of sludge agitation conveying device |
Non-Patent Citations (5)
| Title |
|---|
| 王星等: "《污泥生物处理技术》", 30 April 2010, 冶金工业出版社 * |
| 王正银: "《肥料研制与加工》", 31 December 2015, 中国农业大学出版社 * |
| 许志茹等: "《活性污泥微生物学与分子生物学》", 31 July 2017, 哈尔滨工业大学出版社 * |
| 谢小青: "《污水处理工》", 30 June 2011 * |
| 黄伯云等: "《中国战略性新兴产业-新材料 环境工程材料》", 30 November 2018, 中国铁道出版社 * |
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