CN110482811A - A kind of reclaiming industrial sludge processing method - Google Patents
A kind of reclaiming industrial sludge processing method Download PDFInfo
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- CN110482811A CN110482811A CN201910815595.9A CN201910815595A CN110482811A CN 110482811 A CN110482811 A CN 110482811A CN 201910815595 A CN201910815595 A CN 201910815595A CN 110482811 A CN110482811 A CN 110482811A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/004—Sludge detoxification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- 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
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Treatment Of Sludge (AREA)
Abstract
The embodiment of the invention discloses a kind of reclaiming industrial sludge processing methods, be related to resource and environment technical field, the treating method comprises following steps: the preparation of sludge hydro-thermal process and the carbon enriching substance rich in humic acid, the drying that is extruded to shape, pyrolytic process, pyrolysis gas recycle.A kind of reclaiming industrial sludge processing method of the embodiment of the present invention is using the humic acid fermentation material of agriculture and forestry organic waste material as additive, sludge after being proportionally dehydrated detoxification with hydro-thermal carries out mixing sizing, after drying, into after anaerobism pyrolysis in anaerobism pyrolysis oven, being made can be as the adsorbent product of water process agent, and condensation water and fixed gas are separated into after fugitive constituent portion collection, and after being burnt by respective dedicated burner, supply pyrolysis capacity of furnace, closed loop is integrally formed in technique, main body energy is supplemented without outside energy, and secondary environmental issue is not brought.
Description
Technical field
The present embodiments relate to resource and environment technical fields, and in particular to a kind of reclaiming industrial sludge processing side
Method.
Background technique
China's sewage is divided into trade effluent and sanitary sewage two parts, is shown according to environmental statistics yearbook data, 2007-
China's industrial wastewater discharge amount in 2016 rises to 30,500,000,000 tons by 24,600,000,000 tons, by this trend development, the industry of the year two thousand twenty China
Quantity of wastewater effluent will likely reach 35,000,000,000 tons.Sludge is the end product by generating in sewage disposal process, generally sewage body
Long-pending 3%~5%, the 1%-2% of quality.
Industrial wastewater sludge usually have the following characteristics that complicated component, poisonous and harmful substance content be higher, source dispersion,
Yield is larger.The Treatment of Sludge means that domestic industry enterprise uses at present mainly have gravity concentration, mechanical dehydration, natural desiccation,
Digestion+nature desiccation, depth desiccation+landfill, depth desiccation+burning disposal etc..
Wherein, the modes such as gravity concentration, mechanical dehydration, natural desiccation, digestion+nature desiccation are to stabilize sludge
Processing, does not indicate its whereabouts, that is, is not considered really innoxious.
Depth desiccation+landfill disposal mode is that China uses a kind of processing mode at most at this stage.It possesses following lack
It falls into: first, stabilisation does not represent toxicity, and landfill only manages toxicant concentratedly, and there is no eradicate；Second, it concentrates
It fills and is easy aggregate toxicity；Third, noxious material can escape while natural degradation, and be uncontrollable discharge.
Depth desiccation+burning disposal mode is a kind of best processing mode of minimizing.But it possesses following defect:
One, unavoidable dioxin problem, dioxin problem is one for perplexing sludge incineration development always as waste incineration
Major issue；Second, high energy consumption, incineration method handles sludge, and institute's calorific value can not meet the needs of burning, so one
As need the energy such as another coal, natural gas to be just able to satisfy normal burning condition.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of reclaiming industrial sludge processing method, it is industrial in the prior art to solve
Method for sludge treatment there are the problem of.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
According to a first aspect of the embodiments of the present invention, a kind of reclaiming industrial sludge processing method, the processing method packet
Include following steps:
Step 1: sludge is quantitatively adding hydrothermal reaction kettle by transmission device and carries out hydro-thermal process；Agricultural are discarded
Object carries out the carbon enriching substance that fermentation process preparation is rich in humic acid by strain fermentation technique；
It is by the effect that sludge carries out hydro-thermal process:
1. dehydration: increasing mud granule collision probability by the effect of high temperature and pressure saturated vapor, keep microbial cell broken
Broken, destruction colloform texture, bound water content are significantly reduced and are precipitated as Free water.
2. detoxification: making a part of noxious material (refering in particular to effumability noxious material) anti-under the environmental condition of high temperature and pressure
It should be to remove toxicity.
3. dissolving reducibility sugar: hypothermic phase of the soluble reducing sugars in carbonisation will form a certain amount of duct,
But it is subsequent as the temperature rises, generate duct can generate a large amount of collapsings, effect brought by this collapsing is final
The reduction of product adsorptive value, so it is the necessity for guaranteeing product quality that soluble sugar is dissolved total solid out by hydro-thermal method by early period
Step.
Agriculture and forestry organic waste material is subjected to the carbon enriching substance that fermentation process preparation is rich in humic acid by strain fermentation technique,
Wherein, have following effect using zymotechnique: first can increase carbon element content, and rate must be taken by improving product；Second, humic acid
It can be used as pore corrosion agent in carbonisation, pass through H+With reacting for C bone chain structure, carbonized structure is made to generate micropore.
Step 2: by the sludge after step 1 hydro-thermal process with the carbon enriching substance rich in humic acid according to 1:
The weight ratio of (0.1-1) is mixed, the particulate matter for using the machine of being extruded to shape to be squeezed into diameter as 5-50mm after mixing, is squeezed
After the completion of molded, particulate matter, which is dried, makes the control of its water content in 5-25%；
Step 3: the particulate matter that the water content that step 2 is obtained is 5-25%, diameter is 5-50mm is placed in anaerobic type heat
Pyrolysis processing obtains solid industrial sludge adsorbent and gaseous pyrolysis gas in solution furnace；
Step 4: the pyrolysis gas that step 3 is generated carries out recycling and reusing.
Further, the condition of the hydro-thermal process are as follows: temperature is 140 DEG C -220 DEG C, pressure 1.2-3MPa, and the time is
2-4h。
Further, in step 1, detailed process is as follows for carbon enriching substance of the preparation rich in humic acid:
A. by stalk, sawdust, branch, weeds, leaf or other contain the agriculture and forestry organic waste material based on lignin and cellulose
It carries out being crushed to partial size being 5-80mm；Oversized particles will cause fermentation and be not thorough, and cannot generate enough humic acid to influence
Product quality；The problems such as little particle can make fermentation process generate ventilative difficult and excessive fermentation is spent, to make product carbon content
It reduces and the aperture of product adsorbent becomes larger, to influence product quality；
B. smashed agriculture and forestry organic waste material is added in solid-state fermentation tank, carries out steam sterilizing；The behaviour of the steam sterilizing
Making temperature is 110-140 DEG C, time 20-50min；Steam sterilizing has three aspect purposes: one is being used to agriculture and forestry organic waste material
In original strain killed, in order to avoid influence subsequent fermentation；The second is using steam to lignin, the fibre in agriculture and forestry organic waste material
Dimension element, hemicellulose etc. are hydrolyzed, the increment of strain when facilitating subsequent fermentation；The third is the reduction in dissolution agriculture and forestry organic waste material
Sugar enables it to be consumed at the first time in subsequent access fermentation strain；
It c. will treated after agriculture and forestry organic waste material mixes with mixed bacteria ferments at (35 ± 2) DEG C 7-30 through steam sterilizing
It the carbon enriching substance rich in humic acid, wherein the additive amount of mixed bacteria is discarded through steam sterilizing treated agricultural
The 5%-20% of object amount.
Further, in step c, the mixed bacteria is selected from Bacillus subtilis, Bacillus subtilis
subsp.Subtilis、Bacillus amyloliquefaciens、Trichoderma longibrachiatum、
Trichoderma koningii、Chaetomium globosum Kunze、Trichoderma reesei、Aspergillus
carbonarius、Penicillium corylophilum、Anoxybacillus rupiensis、Alcaligenes
Three kinds or more strains in faecalis, Micrococcus terreus.
Further, in step 3, the pyrolysis processing condition are as follows: temperature is 600-1000 DEG C, time 10-60min,
Pressure is 0.01-0.5MPa.
Further, the specific steps of step 4 are as follows: first enter the pyrolysis gas that step 3 generates after heat exchanger cools down
It is separated in gas and oil separating plant；Upper end material combustible gas after gas and oil separating plant separates is sent into blast furnace gas burner
Middle burning；Lower end material tar after gas and oil separating plant separates, which is sent into tar burner, to burn.Often designed for burning
1m3The blast furnace gas burner of combustible gas corresponds to the tar burner of designed combustion 10-100mg tar.
Through the above technical solutions, the combustible gases such as hydrogen, carbon monoxide, methane and other hydro carbons in pyrolysis gas enter height
Burning is carried out in producer gas burner and achievees the purpose that recycling, and the tar in pyrolysis gas, which is sent into tar burner to burn, to be reached
To the purpose of recycling.It can be used between burner and anaerobic type pyrolysis oven outside burner flare and anaerobic type pyrolysis furnace internal-lining
The direct contact heat exchange of wall, can also be used flue gas heat exchange method and carries out energy exchange.
Further, burn in the blast furnace gas burner and tar burner generation flue gas respectively successively through excess enthalpy
Heat recovery system, dust-extraction unit and gas cleaning plant it is up to standard after discharged.
Through the above technical solutions, residual neat recovering system can be the device of the needs such as heating furnace or heat exchanger heating
In, so that the waste heat of flue gas is fully used；Dust is separated from flue gas by dust-extraction unit, dust-extraction unit may be selected
Biology receives film dust-arrest device, cloud and mist dust-arrest device, bag-type dust collector, cyclone dust collector, wet dust separater, electrostatic precipitation
Device, desulfation dust-extraction device；It can be cleaned to contaminated flue gas by gas cleaning plant, the processing work purified etc.
Make；Flue gas successively passes through recycling and reusing by residual neat recovering system, dust-extraction unit and gas cleaning plant respectively, using net
Change the standard for reaching safety dumping, also achieves the abundant recycling of resource.
Further, in step 3, the anaerobic type pyrolysis oven is sealed rotary kiln, multiple hearth furnace or tubulation charing
Furnace.
The embodiment of the present invention has the advantages that
A kind of reclaiming industrial sludge processing method of the embodiment of the present invention is made using the humic acid fermentation material of agriculture and forestry organic waste material
For additive, the sludge after being proportionally dehydrated detoxification with hydro-thermal mix sizing, it is dry after, into detesting in anaerobism pyrolysis oven
After oxygen pyrolysis, condensation water can be separated into as the adsorbent product of water process agent, and after fugitive constituent portion collection by being made
And fixed gas, and after being burnt by respective dedicated burner, supply pyrolysis capacity of furnace, closed loop is integrally formed in technique, main
Physical efficiency amount is supplemented without outside energy, and does not bring secondary environmental issue.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer, which is extended, obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the function of the invention that can be generated
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.
Fig. 1 is a kind of process flow chart for reclaiming industrial sludge processing method that the embodiment of the present invention 1 provides.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment 1
Sludge in the embodiment is selected from certain chemical industrial park sludge and focuses on project, treatment scale 50t/d, wherein dirty
Mud water content is 80%, and there are also the dirts such as a certain amount of toluene, methanol, dichloroethanes, acetaldehyde, para-acetaldehyde, methyl mercaptan in sludge
Contaminate object.
A kind of reclaiming industrial sludge processing method, process flow chart is as shown in Figure 1, shown processing method includes as follows
Step:
Step 1: the preparation of sludge hydro-thermal process and the carbon enriching substance rich in humic acid
Sludge is quantitatively adding hydrothermal reaction kettle by transmission device and carries out hydro-thermal process；The condition of the hydro-thermal process
Are as follows: temperature is 140 DEG C, pressure 1.2MPa, time 4h；Sludge after hydrothermal treatment its moisture after simple filtration drops
To 45.32%；
Detailed process is as follows for carbon enriching substance of the preparation rich in humic acid:
A. by stalk, sawdust, branch, weeds, leaf or other contain the agriculture and forestry organic waste material based on lignin and cellulose
It carries out being crushed to partial size being 10-15mm；
B. smashed agriculture and forestry organic waste material is added in solid-state fermentation tank, carries out steam sterilizing；The behaviour of the steam sterilizing
Making temperature is 121 DEG C, time 35min；
It c. will treated after agriculture and forestry organic waste material mixes with mixed bacteria at (35 ± 2) DEG C ferments 7 days through steam sterilizing
The carbon enriching substance rich in humic acid, wherein the additive amount of mixed bacteria is through steam sterilizing treated agriculture and forestry organic waste material
The 10% of amount；The mixed bacteria be selected from Bacillus subtilis, Bacillus subtilis subsp.Subtilis,
Bacillus amyloliquefaciens、Trichoderma longibrachiatum、Trichoderma koningii、
Chaetomium globosum Kunze、Trichoderma reesei、Aspergillus carbonarius、
Penicillium corylophilum、Anoxybacillus rupiensis、Alcaligenes faecalis、
Micrococcus terreus, each strain inoculum concentration are as shown in table 1 below.
Each strain inoculum concentration of 1 embodiment of table 1
Step 2: be extruded to shape drying
By the sludge after step 1 hydro-thermal process with the carbon enriching substance rich in humic acid according to the weight of 1:0.25
Than being mixed, the particulate matter for using the machine of being extruded to shape to be squeezed into diameter as 15mm after mixing will after the completion of extrusion forming
Particulate matter, which is sent into rotary kiln to be dried, makes the control of its water content 15%；
Step 3: pyrolytic process
It is directly 4.5m, the number of plies is 6 layers that the particulate matter that the water content that step 2 is obtained is 15%, diameter is 15mm, which is placed in,
Septate heat transfer type multiple hearth furnace in carry out pyrolysis processing, obtain solid industrial sludge adsorbent and gaseous pyrolysis gas；The heat
Solve treatment conditions are as follows: temperature is 600 DEG C, time 52min, pressure 0.02-0.03MPa, and revolving speed is controlled in 1.0-1.2r/
min；
Step 4: pyrolysis gas recycles
The pyrolysis gas that step 3 is generated first enters Oil-gas Separation after tubular heat exchanger carries out heat exchange operation cooling and fills
Set it is interior separated, wherein in heat transfer process, air walks shell and is in, heat exchanger use vertical Method for Installation；Through gas and oil separating plant point
Upper end material combustible gas from after, which is sent into blast furnace gas burner, to burn, and the volume ratio of air and combustible gas is in combustion process
6.01:1；Lower end material tar after gas and oil separating plant separates, which is sent into tar burner, to burn；Often designed for burning
1m3The blast furnace gas burner of combustible gas corresponds to the tar burner of designed combustion 50mg tar；The blast furnace gas burner
It is successively reached respectively by residual neat recovering system, dust-extraction unit and gas cleaning plant with the flue gas for generation of burning in tar burner
It is discharged after mark.
The industrial sludge adsorbent generated through above-mentioned steps is averaged Kong Rongwei 0.51mL/g, BET specific surface area 812m2/
G, using the adsorbent processing COD be 2400mg/L, coloration 240, agribusiness's waste water of TOC 393mg/L, COD removal rate >
87%, chroma removal rate > 80%, TOC removal rate 53.3%~63.5%, the adsorbent adsorption efficiency is high, can reach absorption
The commercial standard (CS) of agent, and noxious material in raw sewage sample is not detected in the adsorbent.
A kind of reclaiming industrial sludge processing method of the present embodiment takes three steps to go for indusrial toxic sludge relevant feature
Poison processing is respectively as follows: 1. hydrothermal process degradation volatile organism；2. carbonization technique by make C, H in solid organic matters, O,
N, migration occur for the elements such as S, Cl destroy its molecular structure to degrade its toxicity；3. pair volatile component carries out extraordinary burning, destroy
Its structure.Accomplish first toxicity reduction, then be carbonized for solid, finally solves gassing.By means of which to indusrial toxic dirt
Mud carries out thorough harmless treatment.
In addition, in order to make product have higher economic value, product is selected as carbonization mud adsorbent.Producing
Cheng Zhong, it is necessary to assure the microcellular structure with adsorbent peer-level.And formation of a full set of technique by triple modes to micropore
Useful effect is played, and is reasonably protected, step is respectively as follows: 1. hydrothermal process and removes excessive soluble sugar (because more
Sugar can make the hole formed collapse)；2. the fermentation of humic acid has ensured the corrosive agent source of microcellular structure；3. reasonable carbon
Chemical industry skill makes micropore be formed with guarantee.
Embodiment 2
A kind of reclaiming industrial sludge processing method includes the following steps:
Step 1: the preparation of sludge hydro-thermal process and the carbon enriching substance rich in humic acid
Sludge is quantitatively adding hydrothermal reaction kettle by transmission device and carries out hydro-thermal process；The condition of the hydro-thermal process
Are as follows: temperature is 210 DEG C, pressure 3MPa, time 2.5h；Sludge after hydrothermal treatment its moisture after simple filtration drops
To 43.18%；
Detailed process is as follows for carbon enriching substance of the preparation rich in humic acid:
A. by stalk, sawdust, branch, weeds, leaf or other contain the agriculture and forestry organic waste material based on lignin and cellulose
It carries out being crushed to partial size being 5~10mm；
B. smashed agriculture and forestry organic waste material is added in solid-state fermentation tank, carries out steam sterilizing；The behaviour of the steam sterilizing
Making temperature is 110 DEG C, time 50min；
It c. will treated after agriculture and forestry organic waste material mixes with mixed bacteria at (35 ± 2) DEG C ferments 30 days through steam sterilizing
The carbon enriching substance rich in humic acid, wherein the additive amount of mixed bacteria is through steam sterilizing treated agriculture and forestry organic waste material
The 15% of amount；The mixed bacteria be selected from Bacillus subtilis, Bacillus subtilis subsp.Subtilis,
Bacillus amyloliquefaciens、Trichoderma longibrachiatum、Trichoderma koningii、
Chaetomium globosum Kunze、Trichoderma reesei、Aspergillus carbonarius、
Penicillium corylophilum、Anoxybacillus rupiensis、Alcaligenes faecalis、
Micrococcus terreus, each strain inoculum concentration are as shown in table 2 below.
Each strain inoculum concentration of 2 embodiment of table 2
| Strain name | Degree % |
| Bacillus subtilis | 10 |
| Bacillus subtilis subsp.Subtilis | 5 |
| Bacillus amyloliquefaciens | 10 |
| Trichoderma longibrachiatum | 5 |
| Trichoderma koningii | 10 |
| Chaetomium globosum Kunze | 15 |
| Trichoderma reesei | 5 |
| Aspergillus carbonarius | 10 |
| Penicillium corylophilum | 10 |
| Anoxybacillus rupiensis | 10 |
| Alcaligenes faecalis | 5 |
| Micrococcus terreus | 5 |
Step 2: be extruded to shape drying
By the sludge after step 1 hydro-thermal process with the carbon enriching substance rich in humic acid according to the weight ratio of 1:0.1
It is mixed, the particulate matter for using the machine of being extruded to shape to be squeezed into diameter as 5mm after mixing, after the completion of extrusion forming, general
Grain object, which is sent into rotary kiln to be dried, makes the control of its water content 5%；
Step 3: pyrolytic process
It is directly 4.5m, the number of plies is 6 layers that the particulate matter that the water content that step 2 is obtained is 5%, diameter is 5mm, which is placed in,
Pyrolysis processing is carried out in septate heat transfer type multiple hearth furnace, obtains solid industrial sludge adsorbent and gaseous pyrolysis gas；The pyrolysis
Treatment conditions are as follows: temperature is 800 DEG C, time 30min, and pressure is 0.10~0.12MPa, and revolving speed is controlled in 1.0-1.2r/
min；
Step 4: pyrolysis gas recycles
The pyrolysis gas that step 3 is generated first enters Oil-gas Separation after tubular heat exchanger carries out heat exchange operation cooling and fills
Set it is interior separated, wherein in heat transfer process, air walks shell and is in, heat exchanger use vertical Method for Installation；Through gas and oil separating plant point
Upper end material combustible gas from after, which is sent into blast furnace gas burner, to burn, and the volume ratio of air and combustible gas is in combustion process
6.01:1；Lower end material tar after gas and oil separating plant separates, which is sent into tar burner, to burn；Often designed for burning
1m3The blast furnace gas burner of combustible gas corresponds to the tar burner of designed combustion 96mg tar；The blast furnace gas burner
It is successively reached respectively by residual neat recovering system, dust-extraction unit and gas cleaning plant with the flue gas for generation of burning in tar burner
It is discharged after mark.
The industrial sludge adsorbent generated through above-mentioned steps is averaged Kong Rongwei 0.57mL/g, BET specific surface area 841m2/
G, using the adsorbent processing COD be 2130mg/L, coloration 210, agribusiness's waste water of TOC 326mg/L, COD removal rate >
84%, chroma removal rate > 75%, TOC removal rate 47.4%~59.1%, the adsorbent adsorption efficiency is high, can reach absorption
The commercial standard (CS) of agent, and noxious material in raw sewage sample is not detected in the adsorbent.
Embodiment 3
A kind of reclaiming industrial sludge processing method includes the following steps:
Step 1: the preparation of sludge hydro-thermal process and the carbon enriching substance rich in humic acid
Sludge is quantitatively adding hydrothermal reaction kettle by transmission device and carries out hydro-thermal process；The condition of the hydro-thermal process
Are as follows: temperature is 180 DEG C, pressure 2.6MPa, time 3h；Sludge after hydrothermal treatment its moisture after simple filtration drops
To 46.93%；
Detailed process is as follows for carbon enriching substance of the preparation rich in humic acid:
A. by stalk, sawdust, branch, weeds, leaf or other contain the agriculture and forestry organic waste material based on lignin and cellulose
It carries out being crushed to partial size being 20~30mm；
B. smashed agriculture and forestry organic waste material is added in solid-state fermentation tank, carries out steam sterilizing；The behaviour of the steam sterilizing
Making temperature is 140 DEG C, time 20min；
It c. will treated after agriculture and forestry organic waste material mixes with mixed bacteria at (35 ± 2) DEG C ferments 15 days through steam sterilizing
The carbon enriching substance rich in humic acid, wherein the additive amount of mixed bacteria is through steam sterilizing treated agriculture and forestry organic waste material
The 8% of amount；The mixed bacteria be selected from Bacillus subtilis, Bacillus subtilis subsp.Subtilis,
Bacillus amyloliquefaciens、Trichoderma longibrachiatum、Trichoderma koningii、
Chaetomium globosum Kunze、Trichoderma reesei、Aspergillus carbonarius、
Penicillium corylophilum、Anoxybacillus rupiensis、Alcaligenes faecalis、
Micrococcus terreus, each strain inoculum concentration are as shown in table 3 below.
Each strain inoculum concentration of 3 embodiment of table 3
| Strain name | Degree % |
| Bacillus subtilis | 5 |
| Bacillus subtilis subsp.Subtilis | 10 |
| Bacillus amyloliquefaciens | 5 |
| Trichoderma longibrachiatum | 5 |
| Trichoderma koningii | 10 |
| Chaetomium globosum Kunze | 10 |
| Trichoderma reesei | 5 |
| Aspergillus carbonarius | 10 |
| Penicillium corylophilum | 15 |
| Anoxybacillus rupiensis | 10 |
| Alcaligenes faecalis | 5 |
| Micrococcus terreus | 10 |
Step 2: be extruded to shape drying
By after step 1 hydro-thermal process sludge with rich in humic acid carbon enriching substance according to 1:1 weight ratio into
Row mixes, the particulate matter for using the machine of being extruded to shape to be squeezed into diameter as 50mm after mixing, after the completion of extrusion forming, by particle
Object, which is sent into rotary kiln to be dried, makes the control of its water content 25%；
Step 3: pyrolytic process
It is directly 4.5m, the number of plies is 6 layers that the particulate matter that the water content that step 2 is obtained is 25%, diameter is 50mm, which is placed in,
Septate heat transfer type multiple hearth furnace in carry out pyrolysis processing, obtain solid industrial sludge adsorbent and gaseous pyrolysis gas；The heat
Solve treatment conditions are as follows: temperature is 1000 DEG C, time 10min, and pressure is 0.48~0.50MPa, and revolving speed is controlled in 1.0-1.2r/
min；
Step 4: pyrolysis gas recycles
The pyrolysis gas that step 3 is generated first enters Oil-gas Separation after tubular heat exchanger carries out heat exchange operation cooling and fills
Set it is interior separated, wherein in heat transfer process, air walks shell and is in, heat exchanger use vertical Method for Installation；Through gas and oil separating plant point
Upper end material combustible gas from after, which is sent into blast furnace gas burner, to burn, and the volume ratio of air and combustible gas is in combustion process
6.01:1；Lower end material tar after gas and oil separating plant separates, which is sent into tar burner, to burn；Often designed for burning
1m3The blast furnace gas burner of combustible gas corresponds to the tar burner of designed combustion 10mg tar；The blast furnace gas burner
It is successively reached respectively by residual neat recovering system, dust-extraction unit and gas cleaning plant with the flue gas for generation of burning in tar burner
It is discharged after mark.
The industrial sludge adsorbent generated through above-mentioned steps is averaged Kong Rongwei 0.59mL/g, BET specific surface area 792m2/
G, using the adsorbent processing COD be 1910mg/L, coloration 197, agribusiness's waste water of TOC 295mg/L, COD removal rate >
75%, chroma removal rate > 70%, TOC removal rate 45.5%~57.0%, the adsorbent adsorption efficiency is high, can reach absorption
The commercial standard (CS) of agent, and noxious material in raw sewage sample is not detected in the adsorbent.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (8)
1. a kind of reclaiming industrial sludge processing method, which is characterized in that the treating method comprises following steps:
Step 1: sludge is quantitatively adding hydrothermal reaction kettle by transmission device and carries out hydro-thermal process；Agriculture and forestry organic waste material is led to
It crosses strain fermentation technique and carries out the carbon enriching substance that fermentation process preparation is rich in humic acid；
Step 2: by the sludge after step 1 hydro-thermal process with the carbon enriching substance rich in humic acid according to 1:(0.1-1)
Weight ratio mixed, the particulate matter for using the machine of being extruded to shape to be squeezed into diameter as 5-50mm after mixing, extrusion forming
After the completion, particulate matter is dried makes the control of its water content in 5-25%；
Step 3: the particulate matter that the water content that step 2 is obtained is 5-25%, diameter is 5-50mm is placed in anaerobic type pyrolysis oven
Middle pyrolysis processing obtains solid industrial sludge adsorbent and gaseous pyrolysis gas；
Step 4: the pyrolysis gas that step 3 is generated carries out recycling and reusing.
2. a kind of reclaiming industrial sludge processing method as described in claim 1, which is characterized in that in step 1, the water
The condition of heat treatment are as follows: temperature is 140 DEG C -220 DEG C, pressure 1.2-3MPa, time 2-4h.
3. a kind of reclaiming industrial sludge processing method as described in claim 1, which is characterized in that in step 1, preparation is rich
Detailed process is as follows for carbon enriching substance containing humic acid:
A. by stalk, sawdust, branch, weeds, leaf or other contain the agriculture and forestry organic waste material based on lignin and cellulose and carry out
Being crushed to partial size is 5-80mm；
B. smashed agriculture and forestry organic waste material is added in solid-state fermentation tank, carries out steam sterilizing；The operation temperature of the steam sterilizing
Degree is 110-140 DEG C, time 20-50min；
It c. will treated after agriculture and forestry organic waste material mixes with mixed bacteria at (35 ± 2) DEG C ferments 7-30 days through steam sterilizing
Carbon enriching substance rich in humic acid, wherein the additive amount of mixed bacteria is through steam sterilizing treated agriculture and forestry organic waste material amount
5%-20%.
4. a kind of reclaiming industrial sludge processing method as claimed in claim 3, which is characterized in that in step c, the mixing
Strain is selected from Bacillus subtilis, Bacillus subtilis subsp.Subtilis, Bacillus
amyloliquefaciens、Trichoderma longibrachiatum、Trichoderma koningii、Chaetomium
globosum Kunze、Trichoderma reesei、Aspergillus carbonarius、Penicillium
corylophilum、Anoxybacillus rupiensis、Alcaligenes faecalis、Micrococcus terreus
In three kinds or more strains.
5. a kind of reclaiming industrial sludge processing method as described in claim 1, which is characterized in that in step 3, the heat
Solve treatment conditions are as follows: temperature is 600-1000 DEG C, time 10-60min, pressure 0.01-0.5MPa.
6. a kind of reclaiming industrial sludge processing method as described in claim 1, which is characterized in that the specific steps of step 4
Are as follows: the pyrolysis gas that step 3 generates first is entered in gas and oil separating plant after heat exchanger cools down and is separated；Through Oil-gas Separation
Upper end material combustible gas after device separation, which is sent into blast furnace gas burner, to burn；Lower end after gas and oil separating plant separates
Material tar, which is sent into tar burner, to burn.
7. a kind of reclaiming industrial sludge processing method as claimed in claim 6, which is characterized in that the blast furnace gas combustion
Burn in device and tar burner generation flue gas respectively successively by residual neat recovering system, dust-extraction unit and gas cleaning plant
It is discharged after up to standard.
8. a kind of reclaiming industrial sludge processing method as described in claim 1, which is characterized in that described to detest in step 3
Oxygen type pyrolysis oven is sealed rotary kiln, multiple hearth furnace or tubulation retort.
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| CN116002942A (en) * | 2022-12-02 | 2023-04-25 | 上海悠漪环保科技有限公司 | Sludge treatment system and method |
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