CN114988655B - Sludge degradable metal ion treatment method - Google Patents
Sludge degradable metal ion treatment method Download PDFInfo
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- CN114988655B CN114988655B CN202210526230.6A CN202210526230A CN114988655B CN 114988655 B CN114988655 B CN 114988655B CN 202210526230 A CN202210526230 A CN 202210526230A CN 114988655 B CN114988655 B CN 114988655B
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- 239000010802 sludge Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910021645 metal ion Inorganic materials 0.000 title claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 33
- 230000004913 activation Effects 0.000 claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 230000018044 dehydration Effects 0.000 claims abstract description 12
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000010865 sewage Substances 0.000 claims abstract description 11
- 239000008139 complexing agent Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000002829 reductive effect Effects 0.000 claims abstract description 6
- 244000005700 microbiome Species 0.000 claims abstract description 5
- 230000001737 promoting effect Effects 0.000 claims abstract 2
- 238000004904 shortening Methods 0.000 claims abstract 2
- 238000007599 discharging Methods 0.000 claims description 15
- 230000000670 limiting effect Effects 0.000 claims description 12
- 230000000536 complexating effect Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005189 flocculation Methods 0.000 claims description 7
- 230000016615 flocculation Effects 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 6
- 230000000813 microbial effect Effects 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 244000052769 pathogen Species 0.000 abstract description 9
- 230000008929 regeneration Effects 0.000 abstract description 5
- 238000011069 regeneration method Methods 0.000 abstract description 5
- 241000233866 Fungi Species 0.000 abstract description 4
- 238000000354 decomposition reaction Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 239000003570 air Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 241000282414 Homo sapiens Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000002147 killing effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000011365 complex material Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 239000003895 organic fertilizer Substances 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 210000003495 flagella Anatomy 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
-
- 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
-
- 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
- C02F2101/006—Radioactive compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/20—Prevention of biofouling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a treatment method of sludge degradable metal ions, which comprises the following steps: the water content of the surplus sludge of the municipal sewage treatment plant is reduced to below 40% by the rapid dehydration equipment. Then adding proper complexing agent and microorganism group, and stirring uniformly to form flocculent complex substance. And then inputting the complex substances into an activation tower, promoting the anaerobic nitrification treatment process, improving the anaerobic nitrification strength, shortening the anaerobic nitrification time, increasing the temperature of the materials in the tank body to 55-65 ℃ and increasing the PH value to above 7 after anaerobic nitrification for more than 6 hours, and achieving the balanced anaerobic nitrification treatment effect. The complex substance is acidified and hydrolyzed in the activation tower to generate methane gas, which is helpful for fungus regeneration and decomposition to form colloidal floccules, the indexes of density, gravity, viscosity, activity, toughness and the like of the complex substance are improved, the anaerobic nitrification treatment effect of the complex substance is improved, pathogen species are killed, peculiar smell is eliminated, and substances such as metal ions, radioactivity and the like and impurities are removed.
Description
Technical Field
The invention relates to the field of waste sludge treatment, in particular to a treatment method of sludge degradable metal ions.
Background
With the economic development of China, the population is continuously increased, the living standard of towns is improved, and the sewage treatment capacity generated in production and life is increasingly increased. Meanwhile, the treatment amount of the surplus sludge in the biochemical treatment sewage process of the urban sewage treatment plant also increases sharply. The residual sludge has complex biological components, various types and large quantity, and contains a large quantity of pathogen species, unpleasant odor, metal ions, radioactivity and other substances and impurities. Is extremely easy to pollute the surface water, underground water, soil and air, and has serious threat to the ecological environment and human health.
The disposal of excess sludge becomes an outstanding environmental problem in China, and the treatment modes are as follows: sanitary landfill, sludge composting agriculture, sludge drying treatment, sludge incineration and ocean dumping. The excess sludge is incinerated and reduced, the treatment speed is high, and the energy can be recovered for power generation, heat supply and the like, so that the method is popularized and applied. The incineration of the excess sludge has high operation cost and is easy to cause atmospheric pollution.
The method comprises the following steps: the surplus sludge enters the boiler for combustion, and because a large amount of microbial substances exist in the sludge, colloidal substances in the sludge can be led into the wall of a refractory brick of the boiler along with air flow for condensation and ash adhesion in the combustion process, so that an air channel is easy to be blocked, the heat transfer efficiency is influenced, the overhaul frequency of a shutdown furnace is increased, and the operation cost is increased;
and two,: the residual sludge enters a boiler to burn, and the flue gas containing metal ions (although the reduction amount) is discharged to the atmosphere through a chimney, so that air pollution is caused;
and thirdly,: the excess sludge is burned in the boiler, ash containing metal ions (although reduced), landfilled, contaminated soil, and land resources destroyed.
At present, the treatment mode of the residual sludge at home and abroad is not ideal, and the source of threat to the ecological environment and human health cannot be eliminated.
In order to better regenerate the organic matters in the excess sludge of the sewage treatment plant through nitrification, convert the organic matters into high-quality biological resources and biological energy, prepare the high-efficiency pollution-free organic fertilizer, the biogas generated by anaerobic nitrification is used for generating electricity, the biological resources and the biological energy are fully and widely applied, the environment is protected, the cyclic comprehensive utilization and energy conversion of waste matters are accelerated, and the energy conservation, emission reduction, environmental protection, circular economy, comprehensive utilization and low carbon development are realized. Provides clean food and fresh air for human beings, provides high-quality ecological resources and ecological energy sources for agriculture, livestock breeding industry, traffic, electric power, roads, buildings and other industries, promotes social development and economic prosperity, and has important practical significance.
Disclosure of Invention
Aiming at the defects of the prior nitrification technology, the invention provides a method for quickly nitrifying, changing the components in the sludge, efficiently performing anaerobic nitrification treatment, killing pathogen species, eliminating peculiar smell, removing substances such as metal ions, radioactivity and the like, and impurities with low cost. The method has the target effects of no waste, recycling, no public hazard, no pollution and zero emission.
In order to solve the technical problems, the technical scheme provided by the invention is a treatment method for sludge degradable metal ions, which comprises the following steps:
(1) And (3) quick dehydration: excess sludge is generated in the biochemical sewage treatment process of the urban sewage treatment plant, the water content of the dehydrated sludge is reduced to below 40% through the sludge rapid dehydration equipment, and the water content and various impurities in the dehydrated sludge are effectively removed. The rapid sludge dewatering equipment is simple, convenient to operate and use, high in sludge dewatering efficiency and low in running cost.
(2) Changing the sludge component: after the treatment in the step (1), adding a proper amount of complexing agent and microorganism clusters into the dehydrated sludge, and uniformly stirring to form flocculent complexing substances.
(3) An activation tower: after the treatment in the step (2), the materials are input into an activation tower (the height of the activation tower exceeds the theoretical height), the anaerobic nitrification treatment process is promoted by driving the swing rotating disc, the anaerobic nitrification strength is improved, the anaerobic nitrification time is shortened, the temperature of the materials in the tank body is increased to 55-65 ℃ and the pH value is increased to more than 7 in more than 6 hours, and the balanced anaerobic nitrification treatment effect is achieved.
(4) Anaerobic nitrification treatment: after the step (3), the complexing substance is subjected to an acidification hydrolysis process in an activation tower to generate methane gas, so that regeneration and decomposition of fungus are facilitated to form colloidal floccules, indexes such as density, gravity, viscosity, activity and toughness of the complexing substance are improved, anaerobic nitrification treatment effect of the complexing substance is improved, pathogen species are killed, peculiar smell is eliminated, and substances such as metal ions and radioactivity and impurities are removed.
In the technical scheme, the sludge rapid dehydration equipment.
The invention solves the technical problem by adopting a scheme that the sludge rapid dehydration equipment comprises a beam dehydrator, a rapid screw extruder and a dosing tank, wherein the beam dehydrator comprises a box body and an inverted cone-shaped beam barrel arranged in the box body, a stacking area is formed between the lower end of the beam barrel and the bottom surface of the box body, and an overflow port is formed in the peripheral side of the upper part of the box body; the circumference of the upper end of the beam tube is provided with a mud delivery tube communicated with the mud delivery tube, the lower part of the dosing tank is connected with a dosing hole of the circumference of the upper end of the beam tube through a pipeline provided with a dosing pump, and an output port of the mud delivery tube and the dosing hole are tangential to the beam tube; the rapid screw extruder is obliquely arranged, an inlet at the lower end of the rapid screw extruder is communicated with a flocculation mud discharging port at the bottom in the box body, a liquid discharging port is arranged at the lower part of the lower end of the rapid screw extruder, and a mud drying outlet is arranged at the bottom of the upper end of the rapid screw extruder.
Further, a joint belt conveyor is arranged at the dry mud outlet.
Further, the taper of the beam tube is 1:0.3-0.4, the distance between the bottom surface of the box body and the upper end surface of the beam tube is A, the height of the beam tube is B, and A: b=1: 0.75.
further, the lower end in the beam tube is supported and connected with the inner bottom of the box body through a plurality of support columns, and the flocculation mud discharging opening is arranged at the lower end position of the bottom surface of the box body.
Furthermore, the bottom of the box body is of an inclined structure, the lower end of the beam tube is parallel to the bottom surface of the inner side of the box body, and an inclined surface stacking area is formed on the bottom surface of the box body.
Further, a gate is arranged at the flocculation mud discharging port.
Further, the inclined arrangement of the screw extruder has a slope of 10-20 degrees.
Further, the helix angle of the helical blade of the rapid screw extruder is 25-35 degrees.
Further, the dosing tank comprises a tank body and a tank cover for closing the upper end of the tank body, wherein a stirring shaft is vertically arranged in the middle of the tank body, a plurality of stirring blades are arranged on the stirring shaft, an adding port is arranged on the outer side of the tank cover, a cover is arranged at the adding port, a motor is vertically arranged in the middle of the upper surface of the tank cover, and an output shaft of the motor penetrates through the tank cover and is connected with the upper end of the stirring shaft for transmission.
Further, an overflow weir is arranged on the inner side of the overflow port on the inner wall of the box body.
Further, the bottom of the box body is in an inverted cone shape.
Further, the lower end of the box body is provided with supporting legs.
In the technical scheme, the addition amount of the complexing agent is preferably 5-10% of the wet weight of the dehydrated sludge after the step (1), and the stirring time is 0.5-1 h.
In the above technical scheme, the addition amount of the microbial clusters is preferably 2-5 per mill of the wet weight of the dewatered sludge after the step (1).
The complexing agent comprises the following components in percentage by mass: 19.5-35% of calcium carbonate, 60-80% of aluminum sulfate and 0.5-5% of polyacrylamide; the microbial groups comprise the following components in percentage by mass: 60% of red filarial worm and 40% of flagellum.
In the technical scheme, the activation tower comprises a cylindrical tank body with a feeding hole and a discharging hole, and an annular chain, wherein the lower part of the annular chain is arranged in the cylindrical tank body, the upper part of the annular chain extends out of the cylindrical tank body, a plurality of swinging rotary tables are arranged at intervals in the length direction of the annular chain, the center part of each swinging rotary table is provided with a sliding slot hole, a rotary shaft matched with the sliding slot hole is penetrated in the center part of each swinging rotary table on one side of the annular chain, the upper end of the rotary shaft penetrates out of the cylindrical tank body and is fixedly connected with the output end of a first motor positioned at the upper part of the cylindrical tank body, an arc-shaped groove is formed in each swinging rotary table, the annular chain penetrates through the arc-shaped groove, limiting parts fixedly connected with the annular chain are arranged on the upper surface and the lower surface of the swinging rotary table, the annular chain extending out of the cylindrical tank body is wound on an upper chain wheel, the upper chain wheel is fixedly connected with the output end of a second motor positioned at the upper part of the cylindrical tank body, the bottom of the cylindrical tank body is provided with a lower chain wheel, and the lower chain is wound on the lower chain wheel; the upper surface or the lower surface of the swinging disc is provided with a protruding part.
Further, the feeding bin for conveying materials into the feeding inlet is arranged beside the feeding inlet of the cylindrical tank body, hoisting equipment for conveying materials into the feeding bin is arranged beside the feeding bin, a plurality of hoppers are arranged on the hoisting equipment, and a horizontal conveying belt is arranged at the feeding end of the hoisting equipment.
Further, the lower part of the cylindrical tank body is provided with a supporting frame, the lower part of the supporting frame is vertically arranged on the ground, a discharge hole of the cylindrical tank body is arranged on the lower part of the cylindrical tank body, the discharge hole is spaced from the ground, and a discharge bin is arranged on the ground below the discharge hole.
Further, the protruding portion is a plurality of rod bodies with a plurality of bifurcation wheel blades vertically fixed on the surface of the swinging disc.
Further, the slotted hole is a spline groove, and the rotating shaft is provided with a spline.
Further, the circle center of the arc-shaped groove coincides with the circle center of the swinging turntable, and the circle center angle of the arc-shaped groove is 70-270 degrees.
Furthermore, the inlet and outlet of the cylindrical tank body is provided with an opening and closing valve.
Further, the diameter of the cylindrical tank body is more than 200 cm, and the height is more than 600 cm; the limiting piece is a bolt arranged on the annular chain, and the bolt penetrates through a gap of the chain link; the annular chain is a steel wire rope, and the limiting part is a rivet joint.
Furthermore, the cylindrical tank body is also provided with a methane discharge pipe orifice and a safety valve port, and a plurality of groups of temperature, pressure, pH value and methane concentration test points are arranged at intervals up and down on the side part of the cylindrical tank body; the temperature, pressure, pH value and methane concentration test points are separated by 1 meter.
Further, the lower end of the rotating shaft is rotationally hinged with a support in the lower part of the cylindrical tank body, the support in the cylindrical tank body downwards extends out of the cylindrical tank body, an automatic lifter which is erected on the ground is arranged at the side of the cylindrical tank body and is positioned at the opposite side of the hoisting equipment, an operation platform which is convenient for daily maintenance and overhaul is arranged on the upper part of the cylindrical tank body, and the operation platform is connected between the hoisting equipment and the upper part of the automatic lifter.
In the technical scheme, the operating principle of the activation tower is as follows: the upper chain wheel is driven to rotate and drive the chain to reciprocate through the second motor in the forward and reverse directions, the chain drives the swing disc limited on the chain to reciprocate up and down, the amplitude of the up and down reciprocating movement of the swing disc and the chain is 50-150 cm, meanwhile, the first motor drives the rotating shaft to rotate for an angle, the swing disc is driven to rotate for an angle along with the rotation, and the lifting and stirring of the material in the cylindrical tank body are realized through the area of the swing disc, the protruding part on the surface of the swing disc and the rod body with a plurality of bifurcation wheel blades, so that the anaerobic nitrification treatment effect of the complex material is improved.
The activation tower can promote the anaerobic nitrification treatment effect of the sludge in the cylindrical tank body through the operation of the mechanism, can promote anaerobic nitrification force, shortens anaerobic nitrification time, can raise the temperature of materials in the tank body to 55-65 ℃ and the pH value to above 7 in 6 hours, achieves the balanced anaerobic nitrification treatment effect, realizes the aim of killing pathogen species, eliminating peculiar smell, removing substances and impurities such as metal ions, radioactivity and the like, and achieves the target effects of no waste, recycling, no public nuisance, no pollution and zero emission.
Compared with the prior art, the invention has the advantages that:
(1) The method of the invention comprises the following steps:
A. and (3) quick dehydration: the system has simple equipment, convenient operation and use, high sludge dewatering efficiency and low operation cost.
B. Changing the sludge component: the residual sludge has complex biological components, various types and large quantity, and contains a large quantity of pathogen species, unpleasant odor, metal ions, radioactivity and other substances and impurities. Adding proper complexing agent and microorganism group, stirring uniformly, changing the components in the sludge, and forming flocculent complex substance.
C. Activation column apparatus (height above theoretical height): through the driving of the swing rotating disc, the anaerobic nitrification treatment process is promoted, the anaerobic nitrification force is improved, the anaerobic nitrification time is shortened, the temperature of the materials in the tank body is increased to 55-65 ℃ and the pH value is increased to more than 7 after the anaerobic nitrification is performed for more than 6 hours, and the balanced anaerobic nitrification treatment effect is achieved.
D. Anaerobic nitrification treatment: the complex substance is acidified and hydrolyzed in the activation tower to generate methane gas, which is helpful for fungus regeneration and decomposition to form colloidal floccules, the indexes of density, gravity, viscosity, activity, toughness and the like of the complex substance are improved, the anaerobic nitrification treatment effect of the complex substance is improved, pathogen species are killed, peculiar smell is eliminated, and substances such as metal ions, radioactivity and the like and impurities are removed.
In conclusion, the method has the advantages of simple process steps, low cost of nitrifying the excess sludge, killing pathogen species, eliminating peculiar smell, removing substances such as metal ions and radioactivity and impurities, improving indexes such as density, severity, viscosity, activity and toughness of complex substances, and improving the quality of synthesized products. The organic substances in the excess sludge are subjected to nitrification and regeneration and are converted into high-quality biological resources and biological energy sources, so that the high-efficiency pollution-free organic fertilizer is prepared, the biogas generated by anaerobic nitrification is used for generating electricity, the biological resources and the biological energy sources are fully and widely applied, the environment is protected, the cyclic comprehensive utilization and energy conversion of waste substances are accelerated, and the energy conservation and emission reduction, environmental protection, cyclic economy, comprehensive utilization and low carbon development are realized. Provides clean food and fresh air for human beings, provides high-quality ecological resources and ecological energy sources for agriculture, livestock breeding industry, traffic, electric power, roads, buildings and other industries, promotes social development and economic prosperity, and has important practical significance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced,
FIG. 1 is a schematic diagram of a sludge rapid dewatering apparatus;
in the figure: 2-1-a rapid screw extruder; 2-2-box body; 2-3-beam barrels; 2-4-dosing holes; 2-5-overflow port; 2-6-overflow weir; 2-7-dosing pumps; 2-8-a flocculation mud discharging port; 2-9-liquid discharge ports; 2-10-dry sludge outlet; 2-11-conveying belt; 2-12-supporting legs; 2-13-dosing tanks; 2-14-pot cover; 2-15-adding port; 2-16-caps; 2-17-motor; 2-18 parts of a stirring shaft; 2-19-gate; 2-20-supporting columns; 2-21-mud conveying pipes; 2-22-beam dehydrator;
FIG. 2 is a schematic view of an activation column configuration;
FIG. 3 is a partial view of FIG. 2;
FIG. 4 is a schematic diagram of a front view configuration of a swing disk;
FIG. 5 is a schematic view of a cross-sectional front view of a wobble plate with a rotating shaft and endless chain mounted thereon;
FIG. 6 is a schematic view of the bottom cross-sectional configuration of FIG. 5;
FIG. 7 is a schematic diagram of another embodiment of FIG. 6;
fig. 8 is a process flow diagram of the present invention.
The specific embodiment is as follows:
in order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Referring to fig. 1:
the sludge rapid dehydration equipment comprises a beam dehydrator 2-22 and a rapid screw extruder 2-1, wherein the rapid screw extruder and a dosing tank 2-13, the beam dehydrator comprises a box body 2-2, an inverted cone beam barrel 2-3 arranged in the box body, a stacking area is formed between the lower end of the beam barrel and the bottom surface of the box body, and an overflow port 2-5 is formed in the peripheral side of the upper part of the box body; the circumference of the upper end of the beam tube is provided with a mud delivery tube 2-21 communicated with the beam tube, the lower part of the dosing tank is connected with a dosing hole 2-4 of the circumference of the upper end of the beam tube through a pipeline provided with a dosing pump 2-7, preferably, the dosing pump is arranged at the upper end of the dosing tube, and the output port of the mud delivery tube and the dosing hole are tangential to the beam tube; the rapid screw extruder is obliquely arranged, an inlet at the lower end of the rapid screw extruder is communicated with a flocculation mud discharging port 2-8 at the bottom in the box body, a liquid discharging port 2-9 is arranged at the lower part of the lower end of the rapid screw extruder, and a dry mud outlet 2-10 is arranged at the bottom of the upper end of the rapid screw extruder;
the dry mud outlet is provided with a belt conveyor 2-11 connected with the mud outlet;
when the sludge dewatering device is used, sludge to be dewatered is fed into a beam tube along the tangential direction of the beam tube or poured onto the upper end of the beam tube by an adherence, meanwhile, a medicine liquid containing a flocculating agent is input into the beam tube through a medicine adding pump, the medicine liquid enters along the tangential direction of the beam tube, the sludge attached to the inner wall of the beam tube flows downwards along the rotary cutting direction of the inner wall of the beam tube, the medicine liquid is fully mixed with the sludge, suspended particles and fine particles in the sludge are flocculated to form large particles or large blocks to be deposited in a stacking area, the flocculated precipitate in the stacking area is extruded and dewatered through a rapid screw extruder, extruded water is output through a liquid outlet, dewatered sludge is output through a belt conveyor connected with a dry sludge outlet after extrusion and dewatering, and supernatant in a box body can be output through an overflow port.
In this embodiment, the taper of the beam tube is 1:0.3-0.4, the distance between the bottom surface of the box body and the upper end surface of the beam tube is A, and the height of the beam tube is B, A: b=1: 0.75.
in this embodiment, the inner lower end of the beam tube is supported and connected with the inner bottom of the box body through a plurality of support columns 2-20, preferably, four support columns with different heights are arranged at the inner lower end of the beam tube, and the flocculation mud discharging opening is arranged at the lower end position of the bottom surface of the box body.
In this embodiment, the bottom of the case is in an inclined structure, the lower end of the beam tube is parallel to the bottom surface of the inner side of the case, and the bottom surface of the case forms an inclined surface stacking area.
In this embodiment, gates 2-19 are installed at the batting discharge port.
In this embodiment, the slope of the rapid screw extruder is 10-20 degrees.
In this embodiment, the helix angle of the screw blade of the rapid screw extruder is 25-35 degrees.
In this embodiment, the dosing tank comprises a tank body and a tank cover 2-14 for closing the upper end of the tank body, wherein a stirring shaft 2-18 is vertically arranged in the middle of the tank body, a plurality of stirring blades are arranged on the stirring shaft, an adding port 2-15 is arranged on the outer side of the tank cover, a cover 2-16 is arranged at the adding port, a motor 2-17 is vertically arranged in the middle of the upper surface of the tank cover, and an output shaft of the motor penetrates through the tank cover and is connected with the upper end of the stirring shaft for transmission.
In this embodiment, the inner wall of the tank body is provided with overflow weirs 2-6 inside the overflow port.
In this embodiment, the bottom of the case is in an inverted cone shape.
In this embodiment, the lower end of the box body is provided with support legs 2-12.
Referring to fig. 2-6:
the activation tower comprises a cylindrical tank body 3 with a feed inlet 1 and a discharge outlet 2, and an annular chain 4, wherein the lower part of the annular chain is arranged in the cylindrical tank body 3, the upper part of the annular chain extends out of the cylindrical tank body, the feed inlet 1 is arranged at the upper part of the cylindrical tank body 3, the discharge outlet 2 is arranged at the lower part of the cylindrical tank body 3, and the feed inlet and the discharge outlet of the cylindrical tank body are provided with an opening and closing valve so as to be opened and closed when feeding or discharging is needed, and the cylindrical tank body 3 is provided with individual exhaust holes so as to facilitate the discharge of anaerobic gas.
A plurality of swinging discs 5 are arranged at intervals in the length direction of the annular chain 4, the swinging discs 5 are round thin plates, the central part of each swinging disc 5 is provided with a sliding groove hole 6 which is a spline groove, the central part of each swinging disc on one side of the annular chain is penetrated with a rotating shaft 7 matched with the sliding groove hole, the rotating shaft is provided with a spline to be matched with the spline groove, the upper end of the rotating shaft 7 penetrates out of the cylindrical tank body and is fixedly connected with the output end of a first motor 8 positioned on the upper part of the cylindrical tank body, and the rotating shaft 7 and the swinging disc 5 are synchronously rotated by being driven by the first motor 8.
The circular chain 4 passes through the circular grooves, the upper surface and the lower surface of the swinging discs are provided with limiting pieces 10 fixedly connected with the circular chain, gaps are reserved between the limiting pieces 10 and the surfaces of the swinging discs 5, and the circular chain drives the swinging discs 5 to move up and down through the limiting pieces when the circular chain moves up and down, and the limiting pieces 10 do not limit the rotation of the swinging discs 5.
The annular chain 4 extending out of the cylindrical tank body is wound on the upper chain wheel 11, the upper chain wheel 11 is fixedly connected with the output end of the second motor 12 positioned at the upper part of the cylindrical tank body, the lower chain wheel 13 is arranged at the inner bottom of the cylindrical tank body, the lower part of the annular chain is wound on the lower chain wheel 13, the rotation shaft is driven by the second motor to drive the swing disc 5 to rotate positively and reversely through mutually matched spline grooves and splines, the swing disc 5 is driven to rotate positively and reversely, the upper surface or the lower surface of the swing disc 5 is provided with a protruding part 14 (the protruding part 14 can be provided with a plurality of straight rod bodies in an array on the lower surface of the swing disc 5, or a rod body with a plurality of forked wheel blades in an array on the lower surface of the swing disc 5, the forked wheel blades can be straight rods or elliptic blades, one example of the rod bodies of the forked wheel blades is provided with a plurality of short rods at the lower end of the straight rod), and the full and quick anaerobic activation of materials is realized.
The first motor rotates positively and reversely for a certain angle, the angle can be 70-270 degrees, the second motor rotates positively and reversely for a few circles, and finally the swing disc 5 moves up and down for 50-150 cm.
In order to facilitate feeding, a feeding bin 25 for feeding materials into the feeding inlet is arranged beside the feeding inlet of the cylindrical tank body, a hoisting device 15 for feeding materials into the feeding bin is arranged beside the feeding bin 25, a plurality of hoppers 16 are arranged on the hoisting device 15, a horizontal conveying belt 17 is arranged at the feeding end of the hoisting device, the horizontal conveying belt 17 feeds materials into the hoppers 16, the hoppers 16 feed the feeding bin 25, and after the feeding bin 25 is full, the feeding bin 25 feeds materials into the cylindrical tank body 3 after the cylindrical tank body 3 is completely discharged; the winch equipment 15, the horizontal conveyer belt 17 and the feeding bin 25 are of the prior art, and the specific construction thereof is not tired.
Further, for convenient ejection of compact, the lower part of the above-mentioned cylindrical jar body is equipped with support frame 18, the lower part of support frame erects and establishes subaerial, the discharge gate 2 of the cylindrical jar body is established in the lower part of the cylindrical jar body, and the discharge gate has the interval with ground, has the interval through discharge gate and ground, can set up another group's horizontal conveyer belt or ejection of compact storehouse 26 in this interval to realize the ejection of compact of material after the anaerobic activation.
The circle center of the arc-shaped groove is coincident with the circle center of the swinging turntable, and the circle center angle of the arc-shaped groove can be 70-270 degrees; the diameter of the cylindrical tank body is more than 200 cm, and the height is more than 600 cm.
The limiting piece of one embodiment is a bolt arranged on the annular chain, the bolt penetrates through a gap of the chain link, the bolt penetrates through and is locked by a nut through the bolt with the diameter smaller than the gap, and therefore limiting of the swinging disc is achieved.
The annular chain of another embodiment is a steel wire rope, and the limiting piece is a rivet joint, so that the limit of the swing disc can be realized through the rivet joint.
In the embodiment, the cylindrical tank body is also provided with a biogas outlet pipe orifice 19 and a safety valve port 20, and a plurality of groups of temperature, pressure, pH value and biogas concentration test points 21 are arranged at intervals up and down on the side part of the cylindrical tank body; the temperature, pressure, pH value and methane concentration test points are separated by 1 meter.
In this embodiment, the lower end of the rotating shaft 7 is rotatably hinged to a support 22 located in the lower part of the cylindrical tank body, the support 22 in the cylindrical tank body extends downwards out of the cylindrical tank body, an automatic lifter 23 for carrying people standing on the ground is arranged beside the cylindrical tank body and on the opposite side of the hoisting device, an operation platform 24 for facilitating daily maintenance is arranged on the upper part of the cylindrical tank body, and the operation platform 24 is connected between the hoisting device 15 and the upper part of the automatic lifter 23.
The working principle of the ion activation tower is as follows: the upper chain wheel is driven to rotate and drive the chain to reciprocate through the second motor in the forward and reverse directions, the chain drives the swing disc limited on the chain to reciprocate up and down, the amplitude of the up and down reciprocating movement of the swing disc and the chain is 50-150 cm, meanwhile, the first motor drives the rotating shaft to rotate for an angle, the swing disc is driven to rotate for an angle along with the rotation, and the lifting and stirring of the material in the cylindrical tank body are realized through the area of the swing disc, the protruding part on the surface of the swing disc and the rod body with a plurality of bifurcation wheel blades, so that the anaerobic nitrification treatment effect of the complex material is improved.
Example 1
A sludge degradable metal ion treatment method comprises the following steps:
(1) And (3) quick dehydration: excess sludge is generated in the biochemical sewage treatment process of the urban sewage treatment plant, the water content of the dehydrated sludge is reduced to below 40% through the sludge rapid dehydration equipment, and the water content and various impurities in the dehydrated sludge are effectively removed. The rapid sludge dewatering equipment is simple, convenient to operate and use, high in sludge dewatering efficiency and low in running cost.
(2) Changing the sludge component: after the treatment in the step (1), adding a proper amount of complexing agent and microorganism clusters into the dehydrated sludge, and uniformly stirring to form flocculent complexing substances.
(3) An activation tower: after the treatment in the step (2), the materials are input into an activation tower (the height of the activation tower exceeds the theoretical height), the anaerobic nitrification treatment process is promoted by driving the swing rotating disc, the anaerobic nitrification strength is improved, the anaerobic nitrification time is shortened, the temperature of the materials in the tank body is increased to 55-65 ℃ and the pH value is increased to more than 7 in more than 6 hours, and the balanced anaerobic nitrification treatment effect is achieved.
(4) Anaerobic nitrification treatment: after the step (3), the complexing substance is subjected to an acidification hydrolysis process in an activation tower to generate methane gas, so that regeneration and decomposition of fungus are facilitated to form colloidal floccules, indexes such as density, gravity, viscosity, activity and toughness of the complexing substance are improved, anaerobic nitrification treatment effect of the complexing substance is improved, pathogen species are killed, peculiar smell is eliminated, and substances such as metal ions and radioactivity and impurities are removed.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (1)
1. A sludge degradable metal ion treatment method comprises the following steps:
(1) And (3) quick dehydration: excess sludge is generated in the biochemical sewage treatment process of the urban sewage treatment plant, the water content of the dehydrated sludge is reduced to below 40% through sludge rapid dehydration equipment, and the water content and various impurities in the dehydrated sludge are effectively removed;
(2) Changing the sludge component: adding complexing agent and microorganism group into the dehydrated sludge obtained in the step (1), and uniformly stirring to form flocculent complexing substance;
(3) Anaerobic nitrification: inputting the complex substance obtained in the step (2) into an activation tower, promoting the anaerobic nitrification treatment process, improving the anaerobic nitrification strength, shortening the anaerobic nitrification time, increasing the temperature of the material in the tank body to 55-65 ℃ and increasing the pH value to 7 above after 6 hours of anaerobic nitrification, achieving the balanced anaerobic nitrification effect, discharging biogas from the upper part of the activation tower, and discharging anaerobic nitrified activated sludge from the lower part of the activation tower;
the sludge rapid dehydration equipment in the step (1) comprises a beam dehydrator, a rapid screw extruder and a dosing tank, wherein the beam dehydrator comprises a box body and a reverse cone-shaped beam barrel arranged in the box body, a stacking area is formed between the lower end of the beam barrel and the bottom surface of the box body, and an overflow port is formed in the peripheral side of the upper part of the box body; the circumference of the upper end of the beam tube is provided with a mud delivery tube communicated with the mud delivery tube, the lower part of the dosing tank is connected with a dosing hole of the circumference of the upper end of the beam tube through a pipeline provided with a dosing pump, and an output port of the mud delivery tube and the dosing hole are tangential to the beam tube; the rapid screw extruder is obliquely arranged, an inlet at the lower end of the rapid screw extruder is communicated with a flocculation mud discharging port at the bottom in the box body, a liquid discharging port is arranged at the lower part of the lower end of the rapid screw extruder, and a dry mud outlet is arranged at the bottom of the upper end of the rapid screw extruder; the taper of the beam tube is 1:0.3-0.4, the distance between the bottom surface of the box body and the upper end surface of the beam tube is A, the height of the beam tube is B, and A: b=1: 0.75;
the weight of the complexing agent in the step (2) is 5-10% of that of the dehydrated sludge, and the stirring time is 0.5-1 h; the weight of the microbial group is 2-5 per mill of dehydrated sludge; the complexing agent comprises the following components in percentage by mass: 19.5-35% of calcium carbonate, 60-80% of aluminum sulfate and 0.5-5% of polyacrylamide; the microbial groups comprise the following components in percentage by mass: 60% of red filarial worms and 40% of flagellates;
the activation tower comprises a cylindrical tank body with a feeding hole and a discharging hole, and an annular chain, wherein the lower part of the annular chain is arranged in the cylindrical tank body, the upper part of the annular chain extends out of the cylindrical tank body, a plurality of swinging rotary plates are arranged at intervals in the length direction of the annular chain, the center part of each swinging rotary plate is provided with a sliding slot hole, a rotary shaft matched with the sliding slot hole is penetrated in the center part of each swinging rotary plate on one side of the annular chain, the upper end of the rotary shaft penetrates out of the cylindrical tank body and is fixedly connected with the output end of a first motor positioned at the upper part of the cylindrical tank body, an arc-shaped groove is formed in each swinging rotary plate, the annular chain penetrates through the arc-shaped groove, limiting pieces fixedly connected with the annular chain are arranged on the upper surface and the lower surface of the swinging rotary plate, the annular chain extending out of the cylindrical tank body is wound on an upper chain wheel, the upper chain wheel is fixedly connected with the output end of a second motor positioned at the upper part of the cylindrical tank body, the bottom of the cylindrical tank body is provided with a lower chain wheel, and the lower chain is wound on the lower chain wheel; the upper surface or the lower surface of the swinging turntable is provided with a bulge, and the bulge is a plurality of rod bodies which are vertically fixed on the surface of the swinging turntable and are provided with a plurality of bifurcation wheel blades; a feeding bin for conveying materials into the feeding hole is arranged beside the feeding hole of the cylindrical tank body, a hoisting device for conveying materials into the feeding bin is arranged beside the feeding bin, a plurality of hoppers are arranged on the hoisting device, and a horizontal conveying belt is arranged at the feeding end of the hoisting device;
the lower part of the cylindrical tank body is provided with a supporting frame, the lower part of the supporting frame is vertically arranged on the ground, a discharge hole of the cylindrical tank body is arranged at the lower part of the cylindrical tank body, the discharge hole is spaced from the ground, and a discharge bin is arranged on the ground below the discharge hole; the diameter of the cylindrical tank body is more than 200 cm, and the height is more than 600 cm; the cylindrical tank body is also provided with a methane discharge pipe orifice and a safety valve port, and a plurality of groups of temperature, pressure, pH value and methane concentration test points are arranged at intervals up and down on the side part of the cylindrical tank body; the upper and lower distances among the temperature, pressure, pH value and methane concentration test points are 1 meter; the lower end of the rotating shaft is rotationally hinged with a support in the lower part of the cylindrical tank body, the support in the cylindrical tank body downwards extends out of the cylindrical tank body, an automatic lifter which is erected on the ground is arranged at the side of the cylindrical tank body and is positioned at the opposite side of the hoisting equipment, an operation platform which is convenient for daily maintenance and overhaul is arranged on the upper part of the cylindrical tank body, and the operation platform is connected between the hoisting equipment and the upper part of the automatic lifter.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08117800A (en) * | 1994-10-25 | 1996-05-14 | Kazuo Hiraga | Final treatment of surplus sludge and device thereof |
| CN101708937A (en) * | 2009-11-27 | 2010-05-19 | 南京工业大学 | Method for promoting sludge reduction by ozone |
| CN102531313A (en) * | 2012-01-16 | 2012-07-04 | 宁波工程学院 | Method for treating sludge and promoting reduction of sludge by using ferrate |
| CN205241336U (en) * | 2015-10-20 | 2016-05-18 | 山东科技大学 | Organic waste water anaerobic fermentation removes miscellaneous storage device |
| WO2017096657A1 (en) * | 2015-12-10 | 2017-06-15 | 清华大学深圳研究生院 | Apparatus for dry anaerobic fermentation of dewatered sludge |
| CN206337103U (en) * | 2016-12-13 | 2017-07-18 | 蓝文贵 | A kind of Multifunction septic-tank sludge, sewage, dirt disposer |
| CN110357395A (en) * | 2019-07-25 | 2019-10-22 | 华北水利水电大学 | A kind of city sludge multistage dehydration device |
| CN215102234U (en) * | 2021-05-28 | 2021-12-10 | 天津市雷鸣生态科技有限公司 | Ultrasonic wave water aeration equipment |
-
2022
- 2022-05-16 CN CN202210526230.6A patent/CN114988655B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08117800A (en) * | 1994-10-25 | 1996-05-14 | Kazuo Hiraga | Final treatment of surplus sludge and device thereof |
| CN101708937A (en) * | 2009-11-27 | 2010-05-19 | 南京工业大学 | Method for promoting sludge reduction by ozone |
| CN102531313A (en) * | 2012-01-16 | 2012-07-04 | 宁波工程学院 | Method for treating sludge and promoting reduction of sludge by using ferrate |
| CN205241336U (en) * | 2015-10-20 | 2016-05-18 | 山东科技大学 | Organic waste water anaerobic fermentation removes miscellaneous storage device |
| WO2017096657A1 (en) * | 2015-12-10 | 2017-06-15 | 清华大学深圳研究生院 | Apparatus for dry anaerobic fermentation of dewatered sludge |
| CN206337103U (en) * | 2016-12-13 | 2017-07-18 | 蓝文贵 | A kind of Multifunction septic-tank sludge, sewage, dirt disposer |
| CN110357395A (en) * | 2019-07-25 | 2019-10-22 | 华北水利水电大学 | A kind of city sludge multistage dehydration device |
| CN215102234U (en) * | 2021-05-28 | 2021-12-10 | 天津市雷鸣生态科技有限公司 | Ultrasonic wave water aeration equipment |
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