CN106034436B - A kind of method of soil cultivation after recovery thermal desorption - Google Patents
A kind of method of soil cultivation after recovery thermal desorption Download PDFInfo
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- CN106034436B CN106034436B CN201610345651.3A CN201610345651A CN106034436B CN 106034436 B CN106034436 B CN 106034436B CN 201610345651 A CN201610345651 A CN 201610345651A CN 106034436 B CN106034436 B CN 106034436B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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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
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Inorganic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of method for recovering soil cultivation after thermal desorption, it is the step of this method：1) low temperature exhaust heat caused by thermal desorption system is utilized to preheat fluidised form feces of livestock and poultry；2) the fluidised form feces of livestock and poultry of hot prognosis is added in the soil after thermal desorption is handled, is well mixed, obtains mixed soil system A, by the 60min of mixed soil system A insulated sterilizings 30, obtain sterile mixed soil；3) the pending fluidised form feces of livestock and poultry of sterile mixed soil waste heat preheating next group is utilized；4) water, stalk powder, complex micro organism fungicide are added into the sterile mixed soil after natural cooling, stirs, obtains mixed soil system B, mixed soil system B is banked up, fermented 7 15 days under normal temperature.This method is simple, and cost is low, can quickly improve the content of organic matter, nitrogen and phosphorus content and moisture content in soil after thermal desorption, recovers the fertility and water content of soil after thermal desorption, so as to recover the farming of soil after thermal desorption.
Description
Technical field
The invention belongs to environmental protection and technical field of soil remediation, and in particular to one kind recovers soil cultivation after thermal desorption
The method of property, this method can be improved and recovered by the organic polluted soil of high temperature thermal desorption method reparation or mercury contaminated soil
Drafting Ability, while realize the disposal of resources to feces of livestock and poultry.
Background technology
Thermal desorption technology is as a kind of non-combustible burning technology, and pollutant process scope is wide, equipment is removable, soil can after reparation
Recycle, particularly to chlorinated organics, the processing mode of non-oxide burning can avoid the generation of dioxin, be widely used in
The reparation of organic pollutants contaminated soil and mercury contaminated soil.
Chinese patent application " mercury contaminated soil thermal desorption and mercury recovery method and integration apparatus " (application number：
201510294274.0) disclose a kind of method of mercury contaminated soil thermal desorption reparation.This method it is specific as follows：By mercury pollution
Villaumite and water are added after soil breaking, mud is made in stirring, adjusts mud pH to 6.5-7.5 with acidic aqueous solution, mud is natural
Crushed after air-drying, pending soil is subjected to thermal desorption under the conditions of 150-300 DEG C, mercury is reclaimed under natural cooling.However,
After this method carries out 150-300 DEG C of heating to soil, a large amount of losses of the soil organism will necessarily be caused, the soil after thermal desorption
Earth farming ability is remarkably decreased.
Chinese patent application " the indirect thermal desorption device of two-part rotary kiln " (application number：CN201510053096.2 it is) open
A kind of thermal desorption device of renovation of organic pollution soil or mercury contaminated soil.The device is by feed hopper, charging flapper, upper strata
Rotary kiln drying room, air blower, lower floor rotary kiln pyrogenation analysis room and discharge bucket etc. part form.The device passes through 200-650 DEG C
High temperature to soil carry out thermal desorption processing, to being discharged after soil UTILIZATION OF VESIDUAL HEAT IN.However, up to 650 DEG C that this method uses
The soil organism almost can be completely pyrolyzed or volatilized and is lost by Soil Thermal desorption condition, cause the barren of soil after thermal desorption,
No longer suitably planted.
Soil after the processing of thermal desorption method still contains more heat after using conventional waste heat recovery, is allowed to
Natural cooling does not meet the policy of China's energy-saving and emission-reduction in atmosphere.And the waste heat recovery that depth is carried out to the preheating in soil needs
Increase device, increase the cost of thermal desorption processing.In addition, the soil after thermal desorption is solid-state, using common heat exchange
Method is difficult to reach preferable heat exchanger effectiveness.
At present, on the one hand, due to the rapid development of livestock culture industry, fowl and animal excrement yield just improves year by year, if not
It is acted upon and utilizes, it will environment is caused greatly to pollute.Fowl and animal excrement is a kind of more high-quality organic fertilizer in fact, special
Other chicken manure, because the feed of chicken intake is not digested and assimilated completely, the nutrients that there are about 40%-70% is excreted, because
This chicken manure nutrient among all fowl and animal excrements is highest.Chicken manure is containing purity nitrogen, phosphorus (P2O5), potassium (K2Be about O) 1.63%,
1.54%th, 0.85%.But parasite and its ovum in chicken manure, and some communicable germs it is logical hinder chicken manure should
With.And on the other hand, the chicken farm in China daily all can the substantial amounts of chicken manure of output, these chicken manures be mostly moisture content up to 70% even
80% wet chicken manure after drying or hot fermentation, it is necessary to just be easy to as organic fertilizer use.But fermentation needs to take greatly
The place of amount, drying needs to consume the substantial amounts of energy, thus the disposal of these wet chicken manures at present is also one of China's poultry husbandry
Problem.
On the other hand, Open Burning Crop Residue remains incessant after repeated prohibition in China, but straw-returning is a kind of very ecological, environmental protective
The method increase soil fertility, stalk can increase the carbon source content of soil and other nutrition contents.
The content of the invention
To solve the above-mentioned problems of the prior art, the invention provides soil cultivation after a kind of recovery thermal desorption
Method, this method is simple, and cost is low, can quickly improve the content of organic matter, nitrogen and phosphorus content and moisture content in soil after thermal desorption,
Recover the fertility and water content of soil after thermal desorption, so as to recover the farming of soil after thermal desorption.
Technical scheme is used by realizing above-mentioned purpose of the present invention：
The method of soil cultivation, comprises the following steps after a kind of recovery thermal desorption：
1) using low temperature exhaust heat preheating fluidised form feces of livestock and poultry caused by thermal desorption system, in the temperature for making fluidised form feces of livestock and poultry
Rise to 50-80 DEG C；
2) soil after thermal desorption is handled still has 200 DEG C -650 DEG C of temperature, by the fluidised form feces of livestock and poultry of hot prognosis
It is added in the soil after thermal desorption is handled, the quality that the fluidised form feces of livestock and poultry of hot prognosis adds is after thermal desorption is handled
The 5%-25% of soil quality, it is well mixed, obtains mixed soil system A, mixed soil system A is still with 150 DEG C -250 DEG C
Temperature, by mixed soil system A insulated sterilizing 30-60 minutes, sterile mixed soil is obtained, now sterile mixed soil still has 80
DEG C -120 DEG C of temperature；
3) using the pending fluidised form feces of livestock and poultry of sterile mixed soil waste heat preheating next group, make next group pending
The temperature of fluidised form feces of livestock and poultry rises to 50 DEG C -80 DEG C, while makes to be down to 50 DEG C -80 DEG C at a temperature of sterile mixed soil, then
Sterile mixed soil is allowed to naturally cool to less than 40 DEG C；
4) water, stalk powder and complex micro organism fungicide, powder of straw are added into the sterile mixed soil after natural cooling
The quality that end adds is the 1%-5% of sterile mixed soil quality, and the quality that complex micro organism fungicide adds is sterile composite soil
The 0.1%-1% of loamy texture amount, stirs, and obtains mixed soil system B, and mixed soil system B moisture content is 30%-45%,
Mixed soil system B is banked up, spontaneous fermentation 7-15 days.
Described fluidised form feces of livestock and poultry is any one in chicken manure, pig manure and cow dung, or any several combination, stream
The moisture content of state feces of livestock and poultry is 70%-200%.
The length of described stalk powder is below 2cm.
In step 4), the water added into the sterile mixed soil after natural cooling is the water recycled, by with lower section
Method recycles to obtain：By caused steam during heat preheating fluidised form feces of livestock and poultry in step 1), and heat is pre- in step 2)
Fluidised form feces of livestock and poultry afterwards mixes with the soil after thermal desorption is handled, is incubated caused steam in sterilization process first collects, so
The water vapour in recovered steam is condensed afterwards, then is discharged after tail gas caused by condensation recovery is handled with charcoal absorption.
Described complex micro organism fungicide is by blown-ball Azotobacter, bacillus megaterium, Lactobacillus plantarum, actinomyces, yeast
Bacterium and red spirillum are formed, blown-ball Azotobacter (AzotobacferchroococcumBeijerick, ACCC 10002), huge bud
Spore bacillus (Bacillus megaterium, ACCC 10010 or ACCC 10011), Lactobacillus plantarum (Lactobacillus
Plantarum, CGMCC1.555 or ACCC10533 or ACCC10644), actinomyces (Dactylosporangiumsp,
ACCC40661), saccharomycete (Saccharomyces cerevisiae, ATCC204508), red spirillum
The mass fraction of (Rhodospirillumsp, CGMCC 6869) be respectively 5%-20%, 10%-20%, 5%-15%,
10%-25%, 10%-20%, 5%-20%.
Compared with prior art, the advantages of the present invention are：
1) present invention is solved and worked as by being comprehensively utilized to the waste heat of soil, feces of livestock and poultry and stalk after thermal desorption
Soil fertility lacks after the processing of preceding thermal desorption, can not farming the problem of, in the case where not adding any chemical fertilizer by barren heat
Desorption processing soil is converted into suitable anthropogenic soil, while feces of livestock and poultry and stalk both materials also achieve recycling profit
With.
2) present invention carries out heat exchange using the soil after fluidised form feces of livestock and poultry and the processing of the thermal desorption of solid-state, significantly carries
The utilization rate of the high waste heat to the soil after thermal desorption processing, so as to improve the economic benefit of soil remediation engineering.
3) the inventive method is not only ingenious simple, and cost is low, and realizes recycling and the protection to environment, fits
Close popularization and application on a large scale.
Embodiment
With reference to specific embodiment, the present invention is described in detail.
Embodiment 1
1) the fluidised form chicken manure for being 82% using low temperature exhaust heat preheating moisture content caused by thermal desorption system, makes fluidised form chicken manure
Temperature rises to 63 DEG C；
2) temperature of the soil after thermal desorption is handled is 262 DEG C, 63 DEG C of fluidised form feces of livestock and poultry is added to de- through heat
In soil after attached processing, the quality that 63 DEG C of fluidised form feces of livestock and poultry just adds is the soil quality after thermal desorption is handled
13%, it is well mixed, it is 186 DEG C of mixed soil system A to obtain temperature, and mixed soil system A insulated sterilizings 30 minutes obtain warm
The sterile mixed soil for 116 DEG C is spent, insulation sterilization can not only kill the pathogenic microorganism in fluidised form chicken manure, moreover it is possible to mixing
Soil system A carries out desiccation；Heat in the step is first collected simultaneously preheats caused steam during fluidised form feces of livestock and poultry, Yi Jire
The fluidised form feces of livestock and poultry of prognosis mixes with the soil after thermal desorption is handled, is incubated caused steam, Ran Houleng in sterilization process
Water vapour in solidifying recovered steam, then discharged after tail gas caused by condensation recovery is handled with charcoal absorption.
3) using the pending fluidised form chicken manure of waste heat preheating next group 20 minutes of sterile mixed soil, now next group is treated
The fluidised form feces of livestock and poultry of processing reaches 69 DEG C with the temperature of sterile mixed soil, then allows sterile mixed soil to naturally cool to 39
℃；
4) water of condensation recovery in step 2) is added into the sterile mixed soil after natural cooling, is crushed to length and is
2cm stalk powder, complex micro organism fungicide, the quality that stalk powder adds is the 2% of sterile mixed soil quality, compound micro-
The quality that bacteria agent adds is the 0.5% of sterile mixed soil quality, and the complex micro organism fungicide is by blown-ball Azotobacter, huge
Bacillus, Lactobacillus plantarum, actinomyces, saccharomycete and red spirillum are formed, blown-ball Azotobacter, bacillus megaterium, plant breast
Bacillus, actinomyces, saccharomycete, the mass fraction of red spirillum are respectively 15%, 12%, 13%, 22%, 18%, 20%, and stirring is equal
It is even, mixed soil system B is obtained, mixed soil system B moisture content is 30%, mixed soil system B is banked up, normal temperature (25 ± 5
DEG C) ferment 10 days.
After testing, after fermenting 10 days, the soil with organic matter content reaches 6.2%, and total nitrogen content brings up to 95mg/Kg,
Phosphorus (P2O5) content brings up to 113mg/Kg potassium (K2O) content brings up to 186mg/Kg, has been particularly suitable for cultivating crops.
Embodiment 2
1) the fluidised form chicken manure for being 78% using low temperature exhaust heat preheating moisture content caused by thermal desorption system, makes fluidised form chicken manure
Temperature rises to 57 DEG C；
2) temperature of the soil after thermal desorption is handled is 244 DEG C, 57 DEG C of fluidised form feces of livestock and poultry is added to de- through heat
In soil after attached processing, the quality of 57 DEG C of fluidised form feces of livestock and poultry addition is the soil quality after thermal desorption is handled
10%, it is well mixed, it is 171 DEG C of mixed soil system A to obtain temperature, and mixed soil system A insulated sterilizings 30 minutes obtain warm
The sterile mixed soil for 112 DEG C is spent, insulation sterilization can not only kill the pathogenic microorganism in fluidised form chicken manure, moreover it is possible to mixing
Soil system A carries out desiccation；Heat in the step is first collected simultaneously preheats caused steam during fluidised form feces of livestock and poultry, Yi Jire
The fluidised form feces of livestock and poultry of prognosis mixes with the soil after thermal desorption is handled, is incubated caused steam, Ran Houleng in sterilization process
Water vapour in solidifying recovered steam, then discharged after tail gas caused by condensation recovery is handled with charcoal absorption.
3) using the pending fluidised form chicken manure of waste heat preheating next group 20 minutes of sterile mixed soil, now next group is treated
The temperature of the fluidised form feces of livestock and poultry of processing rises to 55 DEG C, and 66 DEG C are down at a temperature of sterile mixed soil, then allows sterile mixing
Soil natural is cooled to 38 DEG C；
4) water of condensation recovery in step 2) is added into the sterile mixed soil after natural cooling, is crushed to length and is
2cm stalk powder, complex micro organism fungicide, the quality that stalk powder adds is the 2% of sterile mixed soil quality, compound micro-
The quality that bacteria agent adds is the 0.5% of sterile mixed soil quality, and the complex micro organism fungicide is by blown-ball Azotobacter, huge
Bacillus, Lactobacillus plantarum, actinomyces, saccharomycete and red spirillum are formed, blown-ball Azotobacter, bacillus megaterium, plant breast
Bacillus, actinomyces, saccharomycete, the mass fraction of red spirillum are respectively 13%, 12%, 15%, 22%, 18%, 20%, and stirring is equal
It is even, mixed soil system B is obtained, mixed soil system B moisture content is 30%, mixed soil system B is banked up, normal temperature (25 ± 5
DEG C) ferment 11 days.
After testing, after fermenting 11 days, the soil with organic matter content reaches 6.7%, and total nitrogen content brings up to 102mg/Kg,
Phosphorus (P2O5) content brings up to 125mg/Kg potassium (K2O) content brings up to 174mg/Kg, has been particularly suitable for cultivating crops.
Claims (5)
1. a kind of method of soil cultivation after recovery thermal desorption, it is characterised in that comprise the following steps：
1) utilize low temperature exhaust heat caused by thermal desorption system to preheat fluidised form feces of livestock and poultry, rise to the temperature of fluidised form feces of livestock and poultry
50-80℃；
2) soil after thermal desorption is handled still has 200 DEG C -650 DEG C of temperature, and the fluidised form feces of livestock and poultry after preheating is added
Into the soil after thermal desorption is handled, the quality that the fluidised form feces of livestock and poultry after preheating adds is the soil after thermal desorption is handled
The 5%-25% of quality, it is well mixed, obtains mixed soil system A, mixed soil system A still has 150 DEG C -250 DEG C of temperature,
By mixed soil system A insulated sterilizing 30-60 minutes, obtain sterile mixed soil, now sterile mixed soil still have 80 DEG C-
120 DEG C of temperature；
3) using the pending fluidised form feces of livestock and poultry of sterile mixed soil waste heat preheating next group, the fluidised form that next group is pending is made
The temperature of feces of livestock and poultry rises to 50 DEG C -80 DEG C, while makes to be down to 50 DEG C -80 DEG C at a temperature of sterile mixed soil, then allows nothing
Bacterium mixed soil naturally cools to less than 40 DEG C；
4) water, stalk powder and complex micro organism fungicide, stalk powder is added into the sterile mixed soil after natural cooling to add
The quality entered is the 1%-5% of sterile mixed soil quality, and the quality that complex micro organism fungicide adds is sterile composite soil loamy texture
The 0.1%-1% of amount, stirs, and obtains mixed soil system B, and mixed soil system B moisture content is 30%-45%, will be mixed
Close soil system B to bank up, spontaneous fermentation 7-15 days.
2. the method for soil cultivation after recovery thermal desorption according to claim 1, it is characterised in that：Described fluidised form poultry
Poultry manure is any one in chicken manure, pig manure and cow dung, or any several combination, the moisture content of fluidised form feces of livestock and poultry are
70%-82%.
3. the method for soil cultivation after recovery thermal desorption according to claim 1, it is characterised in that：Described powder of straw
The length at end is below 2cm.
4. the method for soil cultivation after recovery thermal desorption according to claim 1, it is characterised in that in step 4), to certainly
The water so added in the sterile mixed soil after cooling is the water recycled, recycles to obtain by following methods：By step
1) middle fluidised form feces of livestock and poultry during preheating fluidised form feces of livestock and poultry in caused steam, and step 2) after preheating through hot with taking off
Caused steam is first collected in soil mixing, insulation sterilization process after attached processing, then condenses the water vapour in recovered steam,
Discharged after tail gas caused by condensation recovery is handled with charcoal absorption again.
5. the method for soil cultivation after recovery thermal desorption according to claim 1, it is characterised in that：Described is compound micro-
Bacteria agent is made up of blown-ball Azotobacter, bacillus megaterium, Lactobacillus plantarum, actinomyces, saccharomycete and red spirillum, and brown ball is consolidated
Nitrogen bacterium, bacillus megaterium, Lactobacillus plantarum, actinomyces, saccharomycete, the mass fraction of red spirillum be respectively 5%-20%,
10%-20%, 5%-15%, 10%-25%, 10%-20%, 5%-20%.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1332659A2 (en) * | 2002-02-05 | 2003-08-06 | CLAAS Selbstfahrende Erntemaschinen GmbH | Automotive agricultural working vehicle localizing system |
| CN103718691A (en) * | 2013-12-17 | 2014-04-16 | 吉林农业大学 | Soil improvement method |
| CN104761385A (en) * | 2015-04-11 | 2015-07-08 | 黑龙江八一农垦大学 | Multifunctional microbial organic fertilizer and preparation method thereof |
| CN105198677A (en) * | 2015-11-12 | 2015-12-30 | 四川亨润农业科技股份有限公司 | Selenium-rich biological organic fertilizer and preparation method thereof |
-
2016
- 2016-05-23 CN CN201610345651.3A patent/CN106034436B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1332659A2 (en) * | 2002-02-05 | 2003-08-06 | CLAAS Selbstfahrende Erntemaschinen GmbH | Automotive agricultural working vehicle localizing system |
| CN103718691A (en) * | 2013-12-17 | 2014-04-16 | 吉林农业大学 | Soil improvement method |
| CN104761385A (en) * | 2015-04-11 | 2015-07-08 | 黑龙江八一农垦大学 | Multifunctional microbial organic fertilizer and preparation method thereof |
| CN105198677A (en) * | 2015-11-12 | 2015-12-30 | 四川亨润农业科技股份有限公司 | Selenium-rich biological organic fertilizer and preparation method thereof |
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