CN106237836B - A kind of vent gas treatment and discharging mechanism of sludge drying machine - Google Patents

A kind of vent gas treatment and discharging mechanism of sludge drying machine Download PDF

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Publication number
CN106237836B
CN106237836B CN201610675393.5A CN201610675393A CN106237836B CN 106237836 B CN106237836 B CN 106237836B CN 201610675393 A CN201610675393 A CN 201610675393A CN 106237836 B CN106237836 B CN 106237836B
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filter material
spray
microorganism
tail gas
spray column
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CN106237836A (en
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周凌峰
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Green Ltd By Share Ltd
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Green Ltd By Share Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84Biological processes
    • B01D53/85Biological processes with gas-solid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D45/00Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/14Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456Removing acid components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18Absorbing units; Liquid distributors therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017Combinations of electrostatic separation with other processes, not otherwise provided for
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The present invention proposes the vent gas treatment and discharging mechanism of a kind of sludge drying machine.The present invention is successively dusted the tail gas that sludge drying generates, sprays and biofiltration processing.The present invention uses the microorganism filter material cultivated in charcoal matrix, enhances the adsorptivity to tail gas by the micropore of charcoal, and enhances the firmness of microorganism attachment;Centrifugal rotation structure is set, timely and effective can clear up the filter residue accumulated on filter material, extend filter material service life, improve purification efficiency;Spray fluid infusion is carried out to filter material, with humidity, pH value and the nutritional ingredient for maintaining its suitable, filter material diffusate is recycled, is filtered, circulated sprinkling after constituent adjustment, the pollution in diffusate can be removed, the pH value and component ratio of bulking liquor are effectively controlled.

Description

A kind of vent gas treatment and discharging mechanism of sludge drying machine
Technical field
The present invention relates to technical field of sludge treatment more particularly to a kind of vent gas treatments of sludge drying machine and discharge machine Structure.
Background technique
Sludge is a kind of important pollution output object formed in industrial and agricultural production and urban life, in water supply source The Industrial Wastewater Treatments such as purification, sanitary sewage emission treatment, papermaking, printing and dyeing, training of channel excavation and drainage dredging etc. are movable In can all generate sludge.Contain a large amount of harmful microorganisms, heavy metal and organic pollutant in sludge, if do not located properly It sets, serious negative effect can be brought to natural environment and people's health.
Sludge incineration is that the inflammable substance in sludge is made to generate burning at high temperature, its oxygenolysis is enabled, to reach Sludge capacity is reduced, harmful microorganism is killed, remove toxicity and makes full use of the purpose of the energy.Sludge incineration is at present in state It is outer sludge volume to be made to minimize using relatively broad and mature sludge high temperature processing technique, and there is processing speed Fastly, place limits less, reduces transport stacking cost, the advantage of the secondary use energy.Sludge incineration technology China in recent years Significant progress is obtained.
Sludge incineration include the collection of sludge raw material, mechanical dehydration, sludge drying, burning, incineration flue gas processing, burn after give up The links such as material processing, heat recovery and utilization.Sludge drying is required processing step in sludge incineration.Sludge raw material passes through machine Moisture content after tool dehydration remains at 80% or so, burns to realize, it is necessary to further will by drying and other treatment Its moisture content is reduced to 40%-50% or so.
Mud drying process is mainly the process of moisture evaporation, according to the mode that heat-conducting medium is contacted with sludge, is divided into straight Connect desiccation, indirectly drying.Direct desiccation is the surface that sludge is flowed through using hot-air or hot fume as heat-conducting medium, by direct It contacts to sludge transfer heat.In indirectly drying, the heat-conducting mediums such as conduction oil do not contact directly with sludge generation, but pass through stream Through internal heat exchanger, the sludge outside heat exchanger is delivered heat to, sludge water content is promoted to evaporate.
During desiccation, in addition to the moisture in sludge is discharged in vapour form, the effumability contained in sludge Gaseous state can be also converted into therewith by closing object, form sludge drying tail gas.Sludge drying tail gas complicated component, wherein inorganic compound packet Sulfide, ammonia etc. are included, organic compound includes aminated compounds, aldehyde compound, volatile organic acids, ketone, ethers etc. Ingredient, how poisonous and harmful these ingredients are, breath malodor, must be handled before discharge, otherwise be polluted the environment, and seriously endangered And human health.In addition, can also carry the dust based on floating away sludge particle in sludge drying tail gas, it is also desirable to before discharging It gives and purifies, otherwise will increase particulate in air content, cause heavy metal pollution.
The main means for handling sludge drying tail gas in the prior art are that dust separation and compound absorb.Dust separation The means such as Electrostatic Absorption dedusting or cyclonic separation dedusting can be used, remove the mud granule in tail gas.Compound absorption be with water, Alkaline solution etc. cleans the tail gas after dedusting, absorbs easily soluble component and acid ingredient in tail gas, reduces its harmfulness.But it is existing Some treatment process can not more thoroughly remove all harmful components in tail gas, not can effectively clear especially and wherein can The organic compound containing active group for enough causing stench and health of human body being brought to threaten;And the application of the ingredients such as alkaline solution is also It is possible that generating secondary pollution.
Biological treatment is sludge drying tail gas processing mode emerging in recent years, and principle is in filtration tank using micro- Biological filter material is adsorbed and is decomposed to the organic compound ingredient in tail gas, is converted into these organic compound a part micro- Ingredient required for biology itself is grown up, another part are then converted into the filter residue in filter material.This technology is to sludge drying tail gas The scavenging effect of middle harmful components is more thorough, without secondary pollution, can significant energy saving, operating cost is significantly reduced.
The problem of existing biological treatment is brought is: declining in the organic compound ingredient and filter material being adsorbed in tail gas The microorganism died can all be converted into filter residue, and the micropore that filter residue blocking filter material has influences gas permeability, and reduces absorption and make With, and be difficult to effectively be cleared up, therefore, causes microorganism filter material service life to shorten, need to be replaced frequently;In addition, filter material The performance of effect depends on the activity for keeping wherein microorganism, therefore needs to provide humidity appropriate and nutrient for microorganism, existing Spray head is installed in filtration tank in technology, by spray be filter material in microorganism keep the skin wet and nutriment and adjust pH value, But since spray solution is repeatedly circulated, ingredient is difficult to control, also easy to be by the filter residue accumulated in filter material and residual The pollution of liquid.
Summary of the invention
In view of above-mentioned problem above existing in the prior art, the present invention propose a kind of sludge drying machine vent gas treatment and Discharging mechanism.The present invention is successively dusted the tail gas that sludge drying generates, sprays and biofiltration processing;Wherein, it utilizes Dust removal process removes the floating away mud granule in tail gas;By the soluble inorganic compound in spray cleaning tail gas, and increase Tailing air humidity degree enhances biofiltration effect;With organic in the absorption of microorganism filter material and decomposed tail gas in biofiltration tower Compound.The present invention uses the microorganism filter material cultivated in charcoal matrix, is enhanced by the micropore of charcoal to tail gas Adsorptivity, and enhance microorganism attachment firmness;Centrifugal rotation structure is set, it being capable of timely and effective cleaning filter material The filter residue of upper accumulation extends filter material service life, improves purification efficiency;Spray fluid infusion is carried out to filter material, to maintain its suitable Humidity, pH value and nutritional ingredient recycle filter material diffusate, are filtered, circulated sprinkling after constituent adjustment, and exudation can be removed Pollution in liquid effectively controls the pH value and component ratio of bulking liquor.
The present invention provides a kind of vent gas treatment of sludge drying machine and discharging mechanisms characterized by comprising dedusting dress It sets, spray column and biofiltration tower;Dust-extraction unit is used to remove the dust particle in the tail gas of sludge drying machine discharge; Spray column removes inorganic soluble compound therein, and increase for spraying cleaning through dust-extraction unit treated tail gas Tail gas humidity;Biofiltration tower is used to adsorbing and decomposing the organic compound through in spray column treated tail gas, biofiltration Microorganism filter material is set in tower, and to the microorganism filter material spray fluid infusion so as to maintain its suitable humidity, adjust filter material Internal pH value and the contained nutritional ingredient of supplement;Also, the lower part of spray column is liquid storage tank, and the solution of liquid storage tank storage is used for For the spray fluid infusion feed flow in the spray process and biofiltration tower of spray column itself.
Preferably, the spray column has air inlet pipe, and tail gas is input to the bottom of spray column, air inlet by the air inlet pipe Pipe end is uniformly distributed several ventholes so as to tail gas spilling;Air inlet pipe end is located under the liquid level of liquid storage tank;Spray column is also With spray port, the spray port is set to spray column top, and the solution spraying extracted from liquid storage tank is got off.
Preferably, the biofiltration tower top has nozzle group, and the nozzle group is each by several sprinkler compositions Spray head sprays fluid infusion to the microorganism filter material being disposed below.
Preferably, the microorganism filter material includes braced frame, matrix and microbial layer;Braced frame is used for will be micro- Biological filter material suspension be installed in biofiltration tower, and be supported and fixed on the matrix on the frame and be grown on matrix it On microbial layer.
It may further be preferable that using biological carbon materials as the matrix.
Preferably, the braced frame of the microorganism filter material is cylindrical, and has rotation in the center line of cylinder Axis, the built-in motor of biofiltration tower and its transmission mechanism, by driving microorganism filter material around the axis to rotary shaft output torque Rotation rotates generated centrifugal action and the filter residue attached is made to be thrown off microorganism filter material.
It may further be preferable that the cover board of the periphery setting semicircular arc above braced frame, so that thrown away upwards Filter residue can be fallen on the cover board.
Preferably, the bottom of biofiltration tower has accumulator tank, and the accumulator tank is for collecting centrifugal rotation in the process certainly The filter residue and fluid infusion that microorganism filter material is thrown away, and recycling microorganism filter material it is static when from its seep leach come fluid infusion and nature The filter residue to fall off;Accumulator tank has the bottom of spill, and sludge outlet is arranged in the minimum point of bottom.
It may further be preferable that the accumulator tank has return pipe, spray is flowed back into for the supernatant after precipitating filter residue Drench the liquid storage tank in tower.
Preferably, the solution in liquid storage tank is extracted by water pump, passes through filter device then along liquid-transport pipe-line, by branch Connector is divided into two-way, wherein enter biofiltration tower after component adjusting device, sample connection all the way and connect nozzle group, To provide fluid infusion for microorganism filter material, spray column is in addition returned all the way and connects spray port, to realize following in spray column Ring spray leaching.
As it can be seen that the present invention tail gas that sludge drying generates successively is dusted, spray and biofiltration processing;Wherein, Liquid storage tank is placed on inside spray column, space-saving is realized;Circulated sprinkling recycling reduces total water consumption;With specific knot The microorganism filter material adsorption capacity of structure and matrix components is strong, microbial activity is high, filter residue clears up means quickly and efficiently, can be significant Extend filter material service life, improves purification efficiency;Spray fluid infusion is implemented to filter material, its humidity, pH value and nutritional ingredient can be tieed up It holds in suitable degree.
Detailed description of the invention
Fig. 1 is the overall architecture schematic diagram of the preferred embodiment of the present invention;
Fig. 2 is the spray column and biofiltration tower structural schematic diagram of the preferred embodiment of the present invention;
Fig. 3 is the microorganism filter medium structure schematic diagram of the preferred embodiment of the present invention.
Specific embodiment
Below by embodiment, technical solution of the present invention is described in further detail.
Fig. 1 is the overall architecture schematic diagram of the preferred embodiment of the present invention.Sludge drying machine 1 carries out heat drying dehydration to sludge Vapor, escaping gas and the sludge dust particles generated during this are handled to be discharged in the form of tail gas.Tail gas into Enter vent gas treatment and discharging mechanism of the invention, which specifically includes dust-extraction unit 2, spray column 3 and biofiltration tower 4. Tail gas successively executes dedusting, spray removal inorganic soluble compound, biofiltration absorption and decomposing organic in the mechanism The process of object is closed, so that dust particle and toxic, harmful, odor pollutant quilt in the drying tail gas finally discharged to atmosphere It substantially eliminates, reaches environmental emission standard.In order to ensure emission compliance, dust-extraction unit 2, spray column 3 and biofiltration tower 4 are all With gas-tight property, it is ensured that the tail gas just in treatment process will not be released out.
Electrostatic precipitator or cyclone separator can be used in the concrete form of dust-extraction unit 2.Inside electrostatic precipitator Generate high-voltage electrostatic field so that carry charge when sludge dust particles in tail gas pass through electrostatic field and be adsorbed on electrode it On.For cyclone separator by the agitation of blade so that the tail gas into the device forms the whirlwind rotated strongly, density is big Sludge dust particles are thrown out of because of centrifugal action, to be separated.2 one side of dust-extraction unit can be such that tail gas obtains only Change, mud granule also can be recycled get up to be fed again into desiccation machine and handled by another aspect.It is purified through dust-extraction unit 2 Tail gas successively enters spray column 3 in turn, biofiltration tower 4 is handled.
Fig. 2 shows spray columns of the invention and biofiltration tower structural schematic diagram.Through treated the tail gas of dust-extraction unit 2 The bottom of spray column 3 is input to by air inlet pipe 3001, and from the equally distributed several ventholes 3002 in 3001 end of air inlet pipe It overflows inside hence into spray column 3.The lower part of spray column 3 is liquid storage tank 3003, which is used for as spray column 3 itself Spray fluid infusion in spray process and biofiltration tower 4, which provides, uses water, and sprays for receiving and storing from spray column 3 itself The water drenched and the filter material diffusate to flow back from biofiltration tower 4, to realize circulating water supply.3001 end of air inlet pipe position Pass through in liquid storage tank first in the form of bubble under the liquid level of liquid storage tank 3003, therefore from the tail gas that venthole 3002 overflows Liquid storage, then hollow space inside spray column 3 flows up, and tail gas fully absorbs water during by liquid storage tank Point, the humidification to tail gas is realized, humidity increases to the organic compound in tail gas by the microorganism adsorption in biofiltration tower 4 There is facilitation with decomposing;Moreover, the inorganic compounds such as the sulfide contained in tail gas, ammonia are soluble easily in water, therefore can A part is absorbed by the liquid storage in liquid storage tank 3003.Spray port 3004 is set to 3 top of spray column, will extract from liquid storage tank 3003 Solution spraying get off, dropped among liquid storage tank 3003 again;Water droplet is in spray dropping process, in the hollow of spray column 3 Coming into full contact with for large area is unfolded with the tail gas flowed up in part, further absorbs inorganic chemical remaining in tail gas Object is realized and is thoroughly cleaned to comparison of ingredients such as sulfide, ammonias.Certainly, it is contemplated that iterative cycles spray will ultimately result in Inorganic compound dissolution saturation in the liquid storage of liquid storage tank 3003, therefore the liquid storage in liquid storage tank 3003 is also required to regularly replace, Content about processing, adjusting and replacement in liquid storage cyclic process will be hereinafter discussed in detail.It is cleaned by spray Tail gas later flows out spray column from the exhaust pipe 3005 of 3 top of spray column, and flows into biofiltration tower 4.
The top of biofiltration tower 4 is connected to the exhaust pipe 3005, thus after spraying cleaning through spray column 3 and be humidified Tail gas enters the top of biofiltration tower 4, and from top to bottom flows in 4 inner space of biofiltration tower.It experienced dedusting After purification and spray cleaning, remaining toxic, harmful, odor pollutant are mainly aminated compounds, aldehydes chemical combination in tail gas The organic compounds such as object, volatile organic acids, ketone, ethers.The microorganism of apposition growth can adsorb tail in appropriate matrix Above-mentioned organic compound in gas, the microorganism for use are mainly heterotrophism mushroom, these mushrooms can be realized organic compound The oxidation of object, and these organic compounds are degraded to water, carbon dioxide and other productions not having a negative impact to environment Object, these product a part are absorbed as nutriment required for microorganism own existence, separately have some parts with filter residue Form is attached on microorganism filter material.But, the growth of microorganism is survived and will be depended on to the processing capacity of tail gas Sufficient humidity, nutriment appropriate are provided for it, and by the pH value adjustment of its environment to appropriate degree.In the present invention In, fluid infusion is sprayed to the microorganism filter material 4002 being disposed below using the nozzle group 4001 on biofiltration tower top, spray Fluid infusion is absorbed by filter material, so that microorganism filter material 4002 to be maintained to suitable humidity, and is adjusted inside filter material by fluid infusion The pH value of water environment and contained nutritional ingredient ensure that growth survival and the degradation capability of microorganism in microorganism filter material.In order to Realize uniform fluid infusion, and will spray dynamics control in zone of reasonableness, avoid spraying energetically and cause microbial body to be washed to fall off, Using the nozzle group 4001 of several sprinkler compositions, so as to by the water outlet speed control of each spray head zone of reasonableness with It is interior, it is soft uniformly to reach spray water flow.
As shown in figure 3, the structure of microorganism filter material 4002 includes braced frame 4002A, matrix 4002B and microbial layer 4002C.Braced frame 4002A is used to for the suspension of microorganism filter material 4002 being installed in biofiltration tower 4, and supports fixation Matrix 4002B on the frame and microbial layer 4002C being grown on matrix.The present invention uses biological carbon materials As matrix 4002B, charcoal is the biomass material that high temperature pyrolysis is formed under anaerobic, is had as active carbon A large amount of micropore, therefore large specific surface area, adsorption capacity is strong, and the fixed work of absorption can be played to the organic compound in tail gas With;And these micropores are conducive to the enrichment of moisture and nutritional ingredient, and it is highly beneficial to the growth of microorganism.Microbial layer 4002C is grown in the micropore of charcoal, chimeric each other with matrix from microcosmic, so that microbial layer is firmly attached to always On matrix, falling off for microbial layer is caused so as to avoid the centrifugal rotation of microorganism filter material.
As shown in figure 3, braced frame 4002A is cylindrical, and has rotary shaft 4002D in the center line of cylinder, it is raw The built-in motor of object filtration tank 4 and its transmission mechanism, by driving microorganism filter material 4002 to rotary shaft 4002D output torque It is rotated around the axis.Centrifugal action caused by rotating makes the filter residue attached be thrown off microorganism filter material, to reach cleaning filter The effect of slag.The cover board 4002E of periphery setting semicircular arc above braced frame 4002A, so that the filter thrown away upwards Slag can be fallen on cover board 4002E, and then be slided, and the bottom of biofiltration tower 4 is fallen on;The filter residue thrown away downwards then falls directly on life The bottom of object filtration tank 4.With the rotation of microorganism filter material 4002, fluid infusion therein can be naturally also thrown out of, therefore, regular It is cleared up after filter residue by way of centrifugal rotation, to spray fluid infusion to restore the humidity of filter material.
Fig. 2 is returned to, for tail gas after the absorption and decomposition of microorganism filter material 4002, the organic compound contained is basic It eliminates, and then is discharged from the discharge outlet 4003 for being located at 4002 lower section of microorganism filter material.
In the bottom of biofiltration tower 4, there is accumulator tank 4004, which is used to collect during centrifugal rotation The filter residue thrown away from microorganism filter material 4002 and fluid infusion, and recycling microorganism filter material 4002 it is static when from its seep leach come benefit Liquid and the filter residue to fall off naturally.Fluid infusion and filter residue are precipitated in accumulator tank 4004;Accumulator tank 4004 has the bottom of spill Portion, and sludge outlet 4005 is arranged in the minimum point of bottom, so that the filter residue of precipitating is discharged from the outlet;And after filter residue precipitating Supernatant is then flowed back into the liquid storage tank 3003 in spray column 3 by return pipe 4006.Due to experienced precipitation process, the supernatant of reflux The solid impurities such as filter residue are substantially free of in liquid, meanwhile, filter residue under self weight can in time from sludge outlet be discharged, this it is avoided that The problems such as filter residue and fluid infusion mutually mix or filter residue gathers bring secondary pollution and blocking pipeline for a long time.
The part that the present invention realizes circulated sprinkling and constituent adjustment is described below.Solution in liquid storage tank 3003 is by water pump 3006 extract, and pass through filter device 3007 then along liquid-transport pipe-line, are divided by branch connector 3010 for two-way, wherein passing through all the way Enter biofiltration tower 4 after component adjusting device 3008, sample connection 3009 and connect nozzle group 4001, to be microorganism Filter material provides fluid infusion, in addition returns to spray column 3 all the way and connects spray port 3004, to realize the circulated sprinkling in spray column. Wherein, filter device 3007 is to avoid this to thoroughly filter out the solid components such as remaining filter residue in the solution through circulation and stress The eyelet of a little ingredient blocking spray ports and nozzle group.All the way for access biofiltration tower 4, component adjusting device 3008 is used for The nutrient composition for being suitable for microorganism growth is added and adjusts pH value, which can be several using being connected to infusion pipeline Liquid inlet tee joint interface accesses the pipeline of supply nutrient solution and pH value adjustment liquid by these three-way interfaces.Sample connection 3009 can Using the three-way tap of connection infusion pipeline, for sample drawn to carry out nutritional ingredient from infusion pipeline after constituent adjustment And the measurement of pH value, foundation is provided to adjust.
As it can be seen that the present invention tail gas that sludge drying generates successively is dusted, spray and biofiltration processing;Wherein, Liquid storage tank is placed on inside spray column, space-saving is realized;Circulated sprinkling recycling reduces total water consumption;With specific structure With the microorganism filter material adsorption capacity of matrix components is strong, microbial activity is high, filter residue cleaning means quickly and efficiently, can significantly prolong Long filter material service life improves purification efficiency;Spray fluid infusion is implemented to filter material, its humidity, pH value and nutritional ingredient can be maintained In suitable degree.
Above embodiments are merely to illustrate the present invention, and not limitation of the present invention, the common skill in relation to technical field Art personnel can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore all etc. Same technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.

Claims (5)

1. the vent gas treatment and discharging mechanism of a kind of sludge drying machine characterized by comprising dust-extraction unit, spray column and Biofiltration tower;Dust-extraction unit is used to remove the dust particle in the tail gas of sludge drying machine discharge;Spray column is for spraying Cleaning removes inorganic soluble compound therein, and increase tail gas humidity through dust-extraction unit treated tail gas;Biological mistake Filter tower is used to adsorb and decompose the organic compound through in spray column treated tail gas, and setting microorganism filters in biofiltration tower Material, and humidity, adjusting filter material inside pH value and supplement to microorganism filter material spray fluid infusion to maintain its suitable Contained nutritional ingredient;Also, the lower part of spray column is liquid storage tank, and the solution of liquid storage tank storage is used for the spray for spray column itself Spray fluid infusion feed flow in leaching processing and biofiltration tower;
Wherein, the microorganism filter material includes braced frame, matrix and microbial layer;Braced frame is used for microorganism filter material Suspend the micro- life for being installed in biofiltration tower, and being supported and fixed on the matrix on the frame and being grown on matrix Nitride layer, using biological carbon materials as the matrix;The microbial layer is grown in the micropore of biological carbon materials;
The braced frame of the microorganism filter material is cylindrical, and has rotary shaft, biofiltration tower in the center line of cylinder Built-in motor and its transmission mechanism, by driving microorganism filter material to rotate around the axis to rotary shaft output torque, rotation is produced Raw centrifugal action makes the filter residue attached be thrown off microorganism filter material, the lid of the periphery setting semicircular arc above braced frame Plate, so that the filter residue thrown away upwards can be fallen on the cover board;The bottom of biofiltration tower has accumulator tank, which uses The filter residue thrown away during collecting centrifugal rotation from microorganism filter material and fluid infusion, and from it when recycling microorganism filter material is static It seeps and leaches the fluid infusion come and the filter residue to fall off naturally;Accumulator tank has the bottom of spill, and filter is arranged in the minimum point of bottom Slag outlet.
2. vent gas treatment according to claim 1 and discharging mechanism, which is characterized in that the spray column has air inlet pipe, Tail gas is input to the bottom of spray column by the air inlet pipe, and air inlet pipe end is uniformly distributed several ventholes so as to tail gas spilling; Air inlet pipe end is located under the liquid level of liquid storage tank;Spray column also has spray port, and the spray port is set to spray column top, The solution spraying extracted from liquid storage tank is got off.
3. vent gas treatment according to claim 1 and discharging mechanism, which is characterized in that the biofiltration tower top has Nozzle group, the nozzle group spray fluid infusion to the microorganism filter material being disposed below by several sprinkler compositions, each spray head.
4. vent gas treatment according to claim 1 and discharging mechanism, which is characterized in that the accumulator tank has return pipe, The liquid storage tank in spray column is flowed back into for the supernatant after precipitating filter residue.
5. vent gas treatment according to claim 1 and discharging mechanism, which is characterized in that the solution in liquid storage tank is taken out by water pump Take, then along liquid-transport pipe-line pass through filter device, two-way is divided by branch connector, wherein all the way by component adjusting device, Enter biofiltration tower after sample connection and connect nozzle group, to provide fluid infusion for microorganism filter material, in addition returns all the way Spray column simultaneously connects spray port, to realize the circulated sprinkling in spray column.
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CN110201510A (en) * 2019-06-05 2019-09-06 南京化工园博瑞德水务有限公司 A kind of processing method of sludge drying tail gas
CN110835220A (en) * 2019-11-28 2020-02-25 天津凯英科技发展股份有限公司 Sludge anaerobic digestion method and application
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