CN118077544A - Method for reutilizing residue soil after heat treatment of oil sludge - Google Patents
Method for reutilizing residue soil after heat treatment of oil sludge Download PDFInfo
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- CN118077544A CN118077544A CN202211466283.XA CN202211466283A CN118077544A CN 118077544 A CN118077544 A CN 118077544A CN 202211466283 A CN202211466283 A CN 202211466283A CN 118077544 A CN118077544 A CN 118077544A
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- 239000002689 soil Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000010802 sludge Substances 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 49
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000005507 spraying Methods 0.000 claims abstract description 29
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims abstract description 23
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 239000002985 plastic film Substances 0.000 claims abstract description 16
- 229920006255 plastic film Polymers 0.000 claims abstract description 16
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 241000233866 Fungi Species 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004202 carbamide Substances 0.000 claims abstract description 8
- 230000007480 spreading Effects 0.000 claims abstract description 8
- 230000001502 supplementing effect Effects 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims description 16
- 238000004064 recycling Methods 0.000 claims description 15
- 239000002154 agricultural waste Substances 0.000 claims description 14
- 239000002440 industrial waste Substances 0.000 claims description 14
- 239000010871 livestock manure Substances 0.000 claims description 14
- 241000894006 Bacteria Species 0.000 claims description 12
- 241000196324 Embryophyta Species 0.000 claims description 11
- 239000002054 inoculum Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 241000186361 Actinobacteria <class> Species 0.000 claims description 6
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 6
- 240000003183 Manihot esculenta Species 0.000 claims description 6
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 6
- 241000187747 Streptomyces Species 0.000 claims description 6
- 240000002791 Brassica napus Species 0.000 claims description 5
- 235000004977 Brassica sinapistrum Nutrition 0.000 claims description 5
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 5
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 5
- 239000010902 straw Substances 0.000 claims description 5
- 239000000052 vinegar Substances 0.000 claims description 5
- 235000021419 vinegar Nutrition 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical group O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 241000235342 Saccharomycetes Species 0.000 claims 1
- 230000001580 bacterial effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 10
- 238000002791 soaking Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 244000005700 microbiome Species 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 235000015097 nutrients Nutrition 0.000 description 6
- 239000005416 organic matter Substances 0.000 description 6
- 238000000197 pyrolysis Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 241000235070 Saccharomyces Species 0.000 description 5
- 230000003213 activating effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000005341 cation exchange Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 235000016709 nutrition Nutrition 0.000 description 3
- 230000035764 nutrition Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002366 mineral element Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 244000000000 soil microbiome Species 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for reutilizing residue soil after heat treatment of oil sludge, which comprises the following steps: 1) Crushing residues, soaking the residues in water, spraying dilute nitric acid, stirring and uniformly placing the residues; 2) Uniformly mixing soil around a treatment site with residues; 3) Spraying guanidine gum water solution into the residue, covering with plastic film, retaining water, waiting for the residue to be bonded with guanidine gum; 4) Uniformly mixing the mixed material and the residues to obtain a mixed material; 5) Sprinkling water to wet the mixture, spreading to obtain a pile body, covering with plastic film, turning once a week, and supplementing water during turning for at least 2-3 months; 6) Urea is added into the pile body and uniformly turned; inoculating the whole fungus suspension in the pile; ploughing and ventilating according to conditions, keeping humidity, and processing for at least 30 days. The method of the invention changes the residue without utilization value into available soil so as to return to natural circulation, and can carry out plant planting.
Description
Technical Field
The invention belongs to the technical field of recycling of residue soil, and relates to a method for recycling the residue soil after heat treatment of oil sludge.
Background
According to the requirements of laws and regulations and policies in environmental protection, enterprises engaged in sludge incineration and high-temperature treatment must treat and reuse residues, but most enterprises lack technology or funds to fundamentally solve the problem of residue reuse, and basically adopt a covered soil landfill mode to solve the problem.
The method of burning, pyrolysis and the like is an effective method for treating and disposing the oily sludge and other organic matter-containing sludge, and has the advantages of high treatment speed, thorough pollutant removal and the like. However, after the oily sludge and other sludge containing organic matters are treated by incineration, pyrolysis and pyrolysis, the soil structure of the crude oil of the sludge is destroyed, wherein organic matters, soil nutrients, soil microorganisms, mineral elements and the like are destroyed after being incinerated at high temperature, and solid residues after incineration are accumulated in a large amount and are difficult to return to natural recycling, so that the environment is extremely difficult to coordinate with the surrounding environment, and the environment is destroyed in another mode, so that the existing treatment process cannot meet the treatment requirement of on-site environment protection recycling.
Disclosure of Invention
The invention aims to provide a method for recycling residue soil after heat treatment of oil sludge, which solves the problems that the influence of residue on the environment is difficult to be fundamentally eliminated, the cost of the reprocessing process is high, and the recycling is difficult to realize in the prior art.
The technical scheme adopted by the invention is that the method for reutilizing the residue soil after the heat treatment of the oil sludge is implemented according to the following steps:
step1, after weighing the mass of residues to be treated, crushing the residues to a granularity smaller than 1cm, adding water to soak the residues, spraying 0.01-0.05Mol/L of dilute nitric acid, uniformly stirring after spraying, and standing for 6-10 hours;
Step 2, taking soil around the treatment site and the activated residues obtained in the step 1 according to the mass of the residues, and uniformly mixing the mixed soil with the mass of more than 10% of the mass of the residues;
step 3, uniformly spraying guanidine gum aqueous solution into the residues treated in the step 2, covering the residues with a plastic film, and keeping water while waiting for the residues to be bonded with guanidine gum;
Step 4, taking agricultural waste, industrial waste, plant ash and livestock manure as basic materials, and jointly called a blending material; uniformly mixing the mixed material with the residues treated in the step 3, wherein the total mass of the mixed material is not less than 5% of the mass of the residues in the step 3, and the mass of the livestock manure is not less than 1% of the mass of the residues in the step 3, so as to obtain a mixed material;
step 5, sprinkling water to wet the mixed material obtained in the step 4, spreading the mixed material to form a pile body with the height of 80-100cm, covering the pile body with a plastic film, turning the pile body once a week, supplementing water in the turning process, and keeping the humidity at least 60 percent for at least 2-3 months;
Step 6, adding urea into the pile body after the step 5 according to 1-2 kg/ton, and uniformly stirring; inoculating the fermented whole fungus suspension in the pile body, wherein the inoculum size is not less than 3L/ton; and after 48 hours, the concentration of CO 2 in the pile body is detected, when the content of CO 2 is 3%, turning and ventilation are carried out, meanwhile, the humidity is kept to be not less than 60%, and the treatment time is not less than 30 days.
The invention has the beneficial effects that through the heat treatment of the oil sludge, a recycling technology of residues after the incineration and the pyrolysis of the oil-containing sludge is developed. The method of the invention develops a whole set of process for reutilizing residues, which takes ion activation, plant adhesion, decomposition conservation and nutrition biochemistry as main technologies. The method of the invention changes the residue without utilization value into available soil so as to return to natural circulation, and can carry out plant planting.
Detailed Description
The method for reutilizing the residue soil after the heat treatment of the oil sludge is implemented according to the following steps:
Step 1, after weighing the mass of residues to be treated, crushing the residues to a granularity smaller than 1cm, adding a proper amount of water to soak the residues, spraying 0.01-0.05Mol/L of dilute nitric acid (serving as an activating agent), wherein the spraying amount of the dilute nitric acid is 0.5-1% of the mass of the residues, stirring uniformly after spraying, and standing for 6-10 hours;
Step 2, taking soil around the treatment site and the activated residues obtained in the step 1 according to the mass of the residues, and uniformly mixing the mixed soil with the mass of more than 10% of the mass of the residues;
step 3, uniformly spraying guanidine gum water solution serving as an adhesive into the residues treated in the step 2, wherein the mass percentage of the guanidine gum water solution is 0.1% -0.4%, covering the residues with a plastic film, and keeping water while waiting for the residues to be bonded with guanidine gum;
step 4, taking agricultural wastes, industrial wastes, plant ash, livestock manure and other agricultural fertilizers as basic materials, and enabling the blended materials to be independently grasped according to the obtained difficulty; uniformly mixing the mixed material with the residues treated in the step 3, wherein the total mass of the mixed material is not less than 5% of the mass of the residues in the step 3, and the mass of the livestock manure is not less than 1% of the mass of the residues in the step 3, so as to obtain a mixed material;
The agricultural waste material is one or more selected from straw, bean pulp, cotton seed pulp or rapeseed cake.
The industrial waste is one or more of distiller's grains, vinegar residue, cassava residue, sugar residue, furfural residue or sawdust.
Step 5, sprinkling water to wet the mixed material obtained in the step 4, spreading the mixed material to form a pile body with the height of 80-100cm, covering the pile body with a plastic film, turning the pile body once a week, supplementing water properly in the turning process, and keeping the humidity at least 60 percent for at least 2-3 months;
step 6, adding urea into the pile body after the step 5 according to 1-2 kg/ton, and uniformly stirring; inoculating fermented whole bacteria (including bacteria, fungi, actinomycetes, etc.) suspension (containing Bacillus, saccharomyces, streptomyces, etc.) in pile body, with inoculum size not less than 3L/ton; and after 48 hours, the concentration of CO 2 in the pile body is detected, when the content of CO 2 is 3%, turning and ventilation are carried out, meanwhile, the humidity is kept to be not less than 60%, and the treatment time is not less than 30 days.
After the recycling treatment of the residues in the steps is completed, the residues can be used as medium or high-quality soil.
In summary, the method of the present invention 1) forms a whole process for recycling the residue by taking ion activation, plant adhesion, decomposition conservation, nutrition biochemistry as a main technical route for the residue after high temperature incineration or pyrolysis treatment; in order to revive the total metal ions in the residues into the nutrient components of the soil, the stable metal ions in the residues are converted into free states by using extremely dilute nitric acid by referring to the metal ion detection pretreatment technology. 2) The oil sludge subjected to incineration or pyrolysis treatment has the advantages that the soil structure is damaged, organic matters, soil nutrients and microorganisms in the oil sludge are completely lost, the technical measures of adding plant guanidine gum, mixing soil, adding industrial and agricultural waste organic materials for decomposition to form soil humus are adopted, the decomposition process is optimized, the structural composition of residues can be changed while the residues can support the nutrients, the residues can be combined into clusters, the capability of storing moisture, nutrients and air is high, and the microbial breeding is facilitated. 3) In order to completely recover the soil function of the residues to return to nature, soil bacteria are inoculated into the decomposed residues according to the propagation and metabolism conditions of soil microorganisms, and under the action of microorganisms, the treated residues undergo nutrient conversion and biochemical reaction to recover the soil function and can be used as a good carrier for plant growth.
Example 1
Step 1, after weighing the mass of residues to be treated, crushing the residues to a granularity smaller than 1cm, adding a proper amount of water to soak the residues, spraying 0.01Mol/L of dilute nitric acid (serving as an activating agent), wherein the spraying amount of the dilute nitric acid is 0.5% of the mass of the residues, stirring uniformly after spraying, and standing for 10 hours;
step 2, taking soil around the treatment site and the activated residues to be uniformly mixed according to the mass of the residues, wherein the mass of the mixed soil is 20% of the mass of the residues;
Step 3, uniformly spraying guanidine gum water solution serving as an adhesive into the residues after treatment and blending, wherein the mass percentage of the guanidine gum water solution is 0.1%, covering the residues with a plastic film, and keeping water while waiting for the residues to be bonded with guanidine gum;
Step 4, taking agricultural wastes, industrial wastes, plant ash, livestock manure and other agricultural fertilizers as basic materials, and enabling the blended materials to be independently grasped according to the obtained difficulty; and uniformly mixing the mixed material with the treated residues, wherein the total mass of the mixed material is not less than 5% of the mass of the residues, and the mass of the livestock manure is not less than 1% of the mass of the residues, so as to obtain the mixed material. The agricultural waste material is selected from straw and rapeseed cakes. The industrial waste is selected from distiller's grains, vinegar residue, cassava residue and sugar residue.
Step 5, sprinkling water to wet the obtained mixture, spreading the mixture to form a pile body with the height of 80cm, covering the pile body with a plastic film, turning the pile body once a week, supplementing water properly in the turning process, and keeping the humidity at 60 percent, wherein the process is not less than 3 months;
Step 6, adding urea into the finished pile according to the weight of 1 kg/ton, and uniformly stirring; inoculating fermented whole bacteria (including bacteria, fungi, actinomycetes, etc.) suspension (containing Bacillus, saccharomyces, streptomyces, etc.) in pile body, with inoculum size not less than 3L/ton; and (3) detecting the concentration of CO 2 in the pile after 48 hours, and turning and ventilating when the content of CO 2 is 3%, keeping the humidity at least 60%, and finishing the reutilization treatment of residues after the treatment time is not less than 30 days.
The residue soil treated by the embodiment of the invention has pH=6.5, the soil porosity is 19%, the particles with the diameter of 0.01mm in the soil account for 47%, the organic matter content in the soil is 5.7%, the total nitrogen is more than 0.16%, the effective phosphorus content is 17mg/kg, the cation exchange capacity is 13cmol/kg, and the microorganism number is 107/g.
Example 2
Step 1, after weighing the mass of residues to be treated, crushing the residues to a granularity smaller than 1cm, adding a proper amount of water to soak the residues, spraying 0.02Mol/L of dilute nitric acid (serving as an activating agent), wherein the spraying amount of the dilute nitric acid is 0.6% of the mass of the residues, stirring uniformly after spraying, and standing for 9 hours;
Step 2, taking soil around the treatment site and the activated residues to be uniformly mixed according to the mass of the residues, wherein the mass of the mixed soil is 30% of the mass of the residues;
Step 3, uniformly spraying guanidine gum water solution serving as an adhesive into the residues after treatment and blending, wherein the mass percentage of the guanidine gum water solution is 0.15%, covering the residues with a plastic film, and keeping water while waiting for the residues to be bonded with guanidine gum;
Step 4, taking agricultural waste, industrial waste, plant ash and livestock manure as basic materials, and enabling the mixed materials to be independently grasped according to the obtained difficulty; and uniformly mixing the mixed material with the treated residues, wherein the total mass of the mixed material is not less than 6% of the mass of the residues, and the mass of the livestock manure is not less than 2% of the mass of the residues, so as to obtain the mixed material. The agricultural waste material is selected from straw, bean pulp, cotton seed cake. The industrial waste is selected from distiller's grains, vinegar residue, cassava residue, sugar residue, furfural residue and sawdust.
Step 5, sprinkling water to wet the obtained mixture, spreading the mixture to form a pile body with the height of 90cm, covering the pile body with a plastic film, turning the pile body once a week, supplementing water properly in the turning process, and keeping the humidity at 70%, wherein the process is not less than 3 months;
Step 6, adding urea into the finished pile according to the weight of 1.5 kg/ton, and uniformly stirring; inoculating fermented whole bacteria (including bacteria, fungi, actinomycetes, etc.) suspension (containing Bacillus, saccharomyces, streptomyces, etc.) in pile body, with inoculum size not less than 3L/ton; and (3) detecting the concentration of CO 2 in the pile after 48 hours, and turning and ventilating when the content of CO 2 is 3%, keeping the humidity at least 60%, and finishing the reutilization treatment of residues after the treatment time is not less than 30 days.
The residue soil treated in the above example of the present invention has ph=7.5, soil porosity of 24%, 53% of particles with a diameter of 0.05mm in the soil, 7.3% of organic matter in the soil, more than 0.16% of total nitrogen, 30mg/kg of available phosphorus, 17cmol/kg of cation exchange capacity and 108 microorganisms per gram.
Example 3
Step 1, after weighing the mass of residues to be treated, crushing the residues to a granularity smaller than 1cm, adding a proper amount of water to soak the residues, spraying 0.03Mol/L of dilute nitric acid (serving as an activating agent), wherein the spraying amount of the dilute nitric acid is 0.7% of the mass of the residues, stirring uniformly after spraying, and standing for 10 hours;
Step 2, taking soil around the treatment site and the activated residues to be uniformly mixed according to the mass of the residues, wherein the mass of the mixed soil is 30% of the mass of the residues;
step 3, uniformly spraying guanidine gum water solution serving as an adhesive into the residues after treatment and blending, wherein the mass percentage of the guanidine gum water solution is 0.2%, covering the residues with a plastic film, and keeping water while waiting for the residues to be bonded with guanidine gum;
Step 4, taking agricultural waste, industrial waste, plant ash and livestock manure as basic materials, and enabling the mixed materials to be independently grasped according to the obtained difficulty; and uniformly mixing the mixed material with the treated residues, wherein the total mass of the mixed material is not less than 7% of the mass of the residues, and the mass of the livestock manure is not less than 2% of the mass of the residues, so as to obtain the mixed material. The agricultural waste material is selected from straw, bean pulp and rapeseed cake. The industrial waste is selected from distiller's grains, vinegar residue, cassava residue, sugar residue and sawdust.
Step 5, sprinkling water to wet the obtained mixture, spreading the mixture to form a pile body with the height of 100cm, covering the pile body with a plastic film, turning the pile body once a week, supplementing water properly in the turning process, and keeping the humidity to be 65%, wherein the process is not less than 3 months;
Step 6, adding urea into the finished pile according to the weight of 1 kg/ton, and uniformly stirring; inoculating fermented whole bacteria (including bacteria, fungi, actinomycetes, etc.) suspension (containing Bacillus, saccharomyces, streptomyces, etc.) in pile body, with inoculum size not less than 3.5L/ton; and (3) detecting the concentration of CO 2 in the pile after 48 hours, and turning and ventilating when the content of CO 2 is 3%, keeping the humidity at least 60%, and finishing the reutilization treatment of residues after the treatment time is not less than 30 days.
The residue soil treated in the above example of the present invention has ph=7, the soil porosity is 22%, the particles with a diameter of 0.03mm account for 50% in the soil, the organic matter content in the soil is 6%, the total nitrogen is more than 0.16%, the available phosphorus content is 25mg/kg, the cation exchange capacity is 15cmol/kg, and the microorganism number is 107/g.
Example 4
Step 1, after weighing the mass of residues to be treated, crushing the residues to a granularity smaller than 1cm, adding a proper amount of water to soak the residues, spraying 0.05Mol/L of dilute nitric acid (serving as an activating agent), wherein the spraying amount of the dilute nitric acid is 0.1% of the mass of the residues, stirring uniformly after spraying, and standing for 6 hours;
step 2, taking soil around the treatment site and the activated residues to be uniformly mixed according to the mass of the residues, wherein the mass of the mixed soil is 35% of the mass of the residues;
step 3, uniformly spraying guanidine gum water solution serving as an adhesive into the residues after treatment and blending, wherein the mass percentage of the guanidine gum water solution is 0.2%, covering the residues with a plastic film, and keeping water while waiting for the residues to be bonded with guanidine gum;
Step 4, taking agricultural wastes, industrial wastes, plant ash, livestock manure and other agricultural fertilizers as basic materials, and enabling the blended materials to be independently grasped according to the obtained difficulty; and uniformly mixing the mixed material with the treated residues, wherein the total mass of the mixed material is not less than 8% of the mass of the residues, and the mass of the livestock manure is not less than 3% of the mass of the residues, so as to obtain the mixed material. The agricultural waste material is selected from bean pulp, cotton seed meal and rapeseed cake. The industrial waste is selected from cassava residue, sugar residue, furfural residue and sawdust.
Step 5, sprinkling water to wet the obtained mixture, spreading the mixture to form a pile body with the height of 80-100cm, covering the pile body with a plastic film, turning the pile body once a week, supplementing water properly in the turning process, and keeping the humidity at 60%, wherein the process is not less than 3 months;
Step 6, adding urea into the finished pile according to the weight of 1.5 kg/ton, and uniformly stirring; inoculating fermented whole bacteria (including bacteria, fungi, actinomycetes, etc.) suspension (containing Bacillus, saccharomyces, streptomyces, etc.) in pile body, with inoculum size not less than 3L/ton; and (3) detecting the concentration of CO 2 in the pile after 48 hours, and turning and ventilating when the content of CO 2 is 3%, keeping the humidity at least 60%, and finishing the reutilization treatment of residues after the treatment time is not less than 30 days.
The residue soil treated in the above example of the present invention has ph=7.5, soil porosity of 19%, 49% of particles with a diameter of 0.04mm in the soil, 6% of organic matter in the soil, more than 0.16% of total nitrogen, 28mg/kg of available phosphorus, 16cmol/kg of cation exchange capacity and 108 microorganisms per gram.
In summary, the residue soil treated by the above embodiment of the present invention has a data range of ph=6.5 to 7.5, soil porosity of 19% to 24%, particles with diameters of 0.01mm to 0.05mm in the soil of 47% to 53%, organic matter content in the soil of 5.7% to 7.3%, total nitrogen of more than 0.16%, effective phosphorus content of 17 to 30mg/kg, cation exchange capacity of 13 to 17cmol/kg, and microorganism number of 107 to 108/g. The recovered soil belongs to middle-high and high-quality soil from the aspects of nutrition index, environment index, physical index and biological index.
Claims (7)
1. The method for reutilizing the residue soil after the heat treatment of the oil sludge is characterized by comprising the following steps of:
step1, after weighing the mass of residues to be treated, crushing the residues to a granularity smaller than 1cm, adding water to soak the residues, spraying 0.01-0.05Mol/L of dilute nitric acid, uniformly stirring after spraying, and standing for 6-10 hours;
Step 2, taking soil around the treatment site and the activated residues obtained in the step 1 according to the mass of the residues, and uniformly mixing the mixed soil with the mass of more than 10% of the mass of the residues;
step 3, uniformly spraying guanidine gum aqueous solution into the residues treated in the step 2, covering the residues with a plastic film, and keeping water while waiting for the residues to be bonded with guanidine gum;
Step 4, taking agricultural waste, industrial waste, plant ash and livestock manure as basic materials, and jointly called a blending material; uniformly mixing the mixed material with the residues treated in the step 3, wherein the total mass of the mixed material is not less than 5% of the mass of the residues in the step 3, and the mass of the livestock manure is not less than 1% of the mass of the residues in the step 3, so as to obtain a mixed material;
step 5, sprinkling water to wet the mixed material obtained in the step 4, spreading the mixed material to form a pile body with the height of 80-100cm, covering the pile body with a plastic film, turning the pile body once a week, supplementing water in the turning process, and keeping the humidity at least 60 percent for at least 2-3 months;
Step 6, adding urea into the pile body after the step 5 according to 1-2 kg/ton, and uniformly stirring; inoculating the fermented whole fungus suspension in the pile body, wherein the inoculum size is not less than 3L/ton; and after 48 hours, the concentration of CO 2 in the pile body is detected, when the content of CO 2 is 3%, turning and ventilation are carried out, meanwhile, the humidity is kept to be not less than 60%, and the treatment time is not less than 30 days.
2. The method for recycling residual soil after heat treatment of sludge according to claim 1, wherein: the spraying amount of the dilute nitric acid is 0.5% -1% of the mass of the residue.
3. The method for recycling residual soil after heat treatment of oil sludge according to claim 1, wherein: the mass percentage of the guanidine gum aqueous solution is 0.1% -0.4%.
4. The method for recycling residual soil after heat treatment of oil sludge according to claim 1, wherein: the agricultural waste material is one or more selected from straw, bean pulp, cotton pulp or rapeseed cake.
5. The method for recycling residual soil after heat treatment of oil sludge according to claim 1, wherein: the industrial waste is one or more of vinasse, vinegar residue, cassava residue, sugar residue, furfural residue or sawdust.
6. The method for recycling residual soil after heat treatment of oil sludge according to claim 1, wherein: the whole bacteria comprise bacteria, fungi and actinomycetes.
7. The method for recycling residual soil after heat treatment of oil sludge according to claim 1, wherein: the bacterial suspension contains bacillus, saccharomycete and streptomyces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211466283.XA CN118077544A (en) | 2022-11-22 | 2022-11-22 | Method for reutilizing residue soil after heat treatment of oil sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211466283.XA CN118077544A (en) | 2022-11-22 | 2022-11-22 | Method for reutilizing residue soil after heat treatment of oil sludge |
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