CN110521538A - A kind of preparation method of richness iron wormcast and its application in remediation contaminated soil - Google Patents
A kind of preparation method of richness iron wormcast and its application in remediation contaminated soil Download PDFInfo
- Publication number
- CN110521538A CN110521538A CN201910924384.9A CN201910924384A CN110521538A CN 110521538 A CN110521538 A CN 110521538A CN 201910924384 A CN201910924384 A CN 201910924384A CN 110521538 A CN110521538 A CN 110521538A
- Authority
- CN
- China
- Prior art keywords
- wormcast
- iron
- container
- earthworm
- cow dung
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 216
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 79
- 239000002689 soil Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 238000005067 remediation Methods 0.000 title abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 86
- 241000361919 Metaphire sieboldi Species 0.000 claims abstract description 52
- 210000003608 fece Anatomy 0.000 claims abstract description 52
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 238000000855 fermentation Methods 0.000 claims abstract description 22
- 230000004151 fermentation Effects 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 14
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000007605 air drying Methods 0.000 claims abstract description 12
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 12
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000006872 improvement Effects 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 239000002068 microbial inoculum Substances 0.000 claims 1
- APAWRDGVSNYWSL-UHFFFAOYSA-N arsenic cadmium Chemical compound [As].[Cd] APAWRDGVSNYWSL-UHFFFAOYSA-N 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 20
- 238000002161 passivation Methods 0.000 abstract description 14
- 230000029087 digestion Effects 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 6
- 229910001608 iron mineral Inorganic materials 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract 1
- 241000283690 Bos taurus Species 0.000 description 42
- 238000010521 absorption reaction Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 230000009466 transformation Effects 0.000 description 8
- 229910001385 heavy metal Inorganic materials 0.000 description 7
- 239000005416 organic matter Substances 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 7
- 235000013339 cereals Nutrition 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 230000029142 excretion Effects 0.000 description 4
- 230000035611 feeding Effects 0.000 description 4
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000536 complexating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 238000009368 vermiculture Methods 0.000 description 2
- 241000193755 Bacillus cereus Species 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000186660 Lactobacillus Species 0.000 description 1
- 241000235342 Saccharomycetes Species 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010237 hybrid technique Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- WKPSFPXMYGFAQW-UHFFFAOYSA-N iron;hydrate Chemical compound O.[Fe] WKPSFPXMYGFAQW-UHFFFAOYSA-N 0.000 description 1
- 229940039696 lactobacillus Drugs 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
- A01K67/033—Rearing or breeding invertebrates; New breeds of invertebrates
- A01K67/0332—Earthworms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Inorganic Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- Zoology (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of preparation method of rich iron wormcast and its application in remediation contaminated soil comprising steps of (1) pulverizes and sieves iron powder obtains partial size≤1mm iron powder material；(2) it by the cow dung natural air drying after fermentation, pulverizes and sieves, obtains partial size≤1mm cow dung material；(3) the iron powder material of 5~20% mass ratioes is mixed with cow dung material, is put into batch mixer, keeps temperature<30 DEG C, mixing time>20min；(4) it is put into container, keeps tank humidity 60~80%；(5) by earthworm with density 1.5~20,000/m2It is put into container, 20~30 DEG C of vessel temp, humidity 60~80% cultivates for 3~April, and mixed resin digestion is converted to wormcast by earthworm；(6) successively separate earthworm and wormcast: (7) tile wormcast, and natural air drying is ground up, sieved, and obtain the rich iron wormcast of partial size≤2mm.Iron mineral microelement is effectively introduced into wormcast by the present invention, wormcast is realized to the synchronization passivation of arsenic in soil cadmium, and passivation effect is more significant, while improving soil physico-chemical property, promoting soil quality, it is huge to the comprehensive treatment application potential of arsenic cadmium pollution soil.
Description
Technical field
The present invention relates to the preparation method of in particular to a kind of rich iron wormcast and its answering in remediation contaminated soil
With.
Background technique
China's soil contamination problem is serious, and wherein heavy metal has been the primary pollutant of China's soil.Since heavy metal is more
The characteristics of there are attendant phenomenons, and are influenced by atmospheric sedimentation etc., and combined pollution is presented in heavy metal more.Agricultural land soil arsenic cadmium is compound
Pollution it is commonly reported that, especially with rice field arsenic cadmium pollution outstanding problem.Because rice belongs to enrichment arsenic cadmium crop, people are taken the photograph by diet
Enter arsenic cadmium, seriously endangers human health.Therefore, the improvement of arsenic in soil cadmium combined pollution is to be badly in need of solution in current soil environment problem
Certainly the problem of.
It is the important repair mode for solving the problems, such as farmland soil heavy metals that passivation, which is repaired, for arsenic cadmium combined pollution, due to
Arsenic exists in the soil with anionic form, and cadmium exists with cationic form, their chemical behaviors in the soil are inconsistent, difficult
To realize while be passivated.The technology that can be realized the synchronous passivation of arsenic cadmium at present mainly carries out multiple material to assemble application, such as
1) more materials assemble application, such as charcoal+iron-based material, hydroxyapatite+zeolite+modified straw charcoal group mode；2) it applies
Iron-based biological carbon materials, the chemically synthesized ferrimanganic bimetallic material with charcoal are loaded with modified material, such as Zero-valent Iron, with
Arsenic in soil cadmium activity is reduced, significantly reduces crop enrichment arsenic cadmium, it is ensured that agricultural product quality and safety.But since multiple material assembles
Application, need to stir and evenly mix repeatedly multiple material, and operating procedure is complicated, easy to be uneven in the presence of mixing, so that passivation effect is deposited
In difference.And modified material is stronger to the fixed obligate function of arsenic cadmium, and the influence consideration to soil physico-chemical property is not good enough, instead
And the problem of easily causing soil micro-ecosystem variation, the destruction of soil texture.
Have the characteristics that porosity, surface area are big, adsorption capacity is strong according to wormcast, having been reported that at present can by wormcast
The research that heavy metal in soil is administered.In the preparation process of traditional wormcast, in order to reach the absorption effect to heavy metal
Fruit, it will usually the raw material of mineral trace element be piled up as vermiculture bed, make to obtain earthworm in the breeding process
Earthworm excrement, for use as in organic fertilizer or soil remediation；But it can be influenced by factors such as raw material disposal technique, breeding environments, it is past
Mineral trace element can not be effectively introduced in wormcast toward will lead to, and during practice, wormcast
It is extremely limited to the suction-operated of heavy metal in soil, it cannot achieve the synchronous passivation of effective cadmium arsenic.According to existing to soil
The current demand of the synchronous passivation of cadmium arsenic in earth, raising wormcast set out to the angle of the synchronization passivation effect of cadmium arsenic, propose one
The preparation method of the new rich iron wormcast of kind and its application in remediation contaminated soil, it is above-mentioned to overcome the shortcomings of, it realizes same
Step solves the problems, such as arsenic in soil cadmium combined pollution, promotes soil quality.
Summary of the invention
In consideration of it, a kind of preparation method that the present invention proposes rich iron wormcast and its application in remediation contaminated soil,
Iron mineral microelement is effectively introduced into wormcast by it, not only realizes wormcast to the synchronization passivation of arsenic in soil cadmium,
And passivation effect is more significant, greatly promotes soil quality.
The technical scheme of the present invention is realized as follows:
The present invention provides a kind of preparation method of rich iron wormcast, includes the following steps:
Step 1: crushed 16~20 meshes for iron powder, obtain the evengranular iron powder material of partial size≤1mm；
Step 2: after the cow dung after everfermentation is carried out natural air drying, then crushed 16~20 meshes, obtain partial size≤
The evengranular cow dung of 1mm is expected；
Step 3: iron powder material is added in cow dung material according to 5~20% mass ratio and is uniformly mixed, and is put into mixing
In machine, 30 DEG C of temperature < of blender are kept, mixing time > 20min is stirred evenly, and obtains mixing initial material；
Step 4: mixing initial material being put into container, and is sprayed water into container, keep the humidity in container be 60~
80%, obtain mixed resin；
Step 5: by earthworm with density for 1.5~20,000/m2It is put into the container, and keeps container cool place, ventilation, hold
Temperature in device is 20~30 DEG C, and humidity is 60~80%, cultivates 3~4 months, makes earthworm that mixed resin sufficiently to be disappeared
Change, is converted to wormcast；
Step 6: earthworm and wormcast are successively separated by the way of the scraping of surface according to the photophobism of earthworm:
Step 7: the wormcast of acquisition is tiled, and carries out natural air drying, then crushed 10~12 meshes, obtain partial size≤
The iron content of 2mm rich iron wormcast abundant.
The present invention proposes a kind of preparation method of rich iron wormcast, and iron mineral microelement is effectively introduced earthworm in order to realize
In earthworm excrement, increase the content of the iron in wormcast, to improve the effect of wormcast passivation synchronous to cadmium arsenic, the present invention is by by iron
Powder and it is fermented after cow dung carry out dispersion and fining sieving processing respectively, obtain the unified iron powder material of grain diameter and cow dung material,
And by adjusting the mixed proportion of the two and mixed temperature, time, so that the uniformity of the two mixing is improved, to enhance earthworm
The decomposition and absorption of earthworm, improve the transformation efficiency of iron, and earthworm is finally put into the mixed resin with certain cultivation density again
In, and the temperature and humidity of suitable cultivation is combined to be obtained to effectively facilitate the activities such as the feeding of earthworm, digestion, excretion
The total iron content of rich iron wormcast can reach 14.4g/kg, iron mineral microelement is sufficiently introduced into wormcast, thus not only
Can be by the adsorption function of wormcast itself and the organic matter being rich in, absorption and complexing fixed function to cadmium reduce its work
Property, but also the ferro element being rich in wormcast can be taken full advantage of in the soil gradually during aging, it is formed without fixed
Type he and amorphous iron (hydrogen) oxide, enhance the precipitation to arsenic cadmium, reduce the validity of arsenic cadmium；Substantially increase earthworm
Synchronization passivation of the earthworm excrement to arsenic in soil cadmium, the synchronous work that reduces arsenic cadmium more significant to the absorption of arsenic cadmium, sedimentation effect
Property, reduce its coercion to plant production.Simultaneously the features such as its organic matter being rich in, porous structure, alkaline nature, it can show
Writing improves soil physical and chemical property, micro-ecological environment, to achieve the effect that comprehensive promotion soil quality.It further illustrates, step
One, the purity of the iron powder is 80% or more.
It further illustrates, in step 1 and step 2, the grain diameter of the iron powder material and cow dung material is 0.05~1mm.
Guarantee that iron powder material and cow dung material in smaller and consistent grain diameter, guarantee mixing well between the two, the dispersion effect of iron
It is more uniform, be conducive to the absorption of earthworm, if but particle it is too small, between particle generate unite condensation, be unfavorable for the life of earthworm instead
It deposits.
It further illustrating, step 3, the temperature in the blender is 23~26 DEG C, the mixing time is 30~
40min.The temperature and time of its mixing is controlled, the intergranular peptizaiton of iron powder material is improved, to be conducive in cow dung material
The decomposition of organic matter promotes the absorption of breeding earthworm.
Further illustrate, step 2, the fermentation of the cow dung be by fresh cow dung by weight, be added 15~20% carbonic acid
Hydrogen sodium is uniformly mixed, and 0.05~0.5% fermenting agent is added, and carries out anaerobic fermentation, and fermentation temperature is maintained at 55~60 DEG C, hair
The ferment time is 5~10 days.By carrying out above-mentioned anaerobic fermentation to cow dung, keep cattle manure decomposed thoroughly, the cow dung made
Powder is more advantageous to absorption of the earthworm to organic nutrient.Wherein, the fermenting agent is colloid bacillus cereus, bacillus subtilis
Any one or more of bacterium, saccharomycete, lactobacillus inoculation.
It further illustrates, step step 3, before iron powder material is mixed with cow dung material, iron powder material is heat-treated, by iron
Powder is placed under the nitrogen environment that temperature is 100~120 DEG C, is heat-treated 5~8h.Iron powder material is carried out at the heat under certain temperature
Reason makes iron powder material after mixing with cow dung with the active force between the ferrous powder granules that are further reduced under smaller particle, and dispersion is more
Add uniformly, avoids reuniting because of the organic matter of cow dung itself, the absorption and digestion of earthworm are influenced, to improve the conversion of iron
Efficiency and total iron content.
It further illustrates, in step 5, the earthworm size being put into container is 0.3~0.5g/ item.
It further illustrates, in step 5, controlling the temperature in the container is 25 DEG C, humidity 75%.It selects optimal
Vermiculture condition, and be adapted with mixed resin after treatment, promote earthworm to mixed resin to be more advantageous to
Feeding, digestion, excretion improve the transformation efficiency of iron.
It further illustrates, step 5, when cultivation was to 2 months or more, the temperature in the container is adjusted to 20 DEG C, it is wet
Degree is 60%.Due to the time increase with cultivation, the quantity of earthworm increases, then needs accordingly to adjust the environment of Cultivation container,
The growth for guaranteeing earthworm, improves the total iron content of wormcast.
It is a kind of richness iron wormcast Cadmium in Soil arsenic pollution improvement in application.
Compared with prior art, the beneficial effects of the present invention are: the present invention passes through the hybrid technique of optimization iron powder and cow dung,
The decomposition conducive to earthworm and the mixed resin of absorption are obtained, the transformation efficiency of iron is substantially increased, adjusts the cultivation of earthworm
Condition, promotes the activities such as the feeding, digestion, excretion of earthworm, and the total iron content of richness iron wormcast obtained can reach 14.4g/
Iron mineral microelement is sufficiently introduced into wormcast by kg, by the adsorption function of wormcast itself and can be not only rich in
Organic matter, absorption and complexing fixed function to cadmium, reduces its activity, and the ferro element being rich in wormcast is utilized,
Enhance the co-precipitation to arsenic cadmium, reduce the validity of arsenic cadmium, the synchronous of arsenic in soil cadmium is passivated to improve wormcast
Effect, more significant to the absorption of arsenic cadmium, sedimentation effect, the synchronous activity for reducing arsenic cadmium reduces its stress to plant production
Effect.Simultaneously the features such as its organic matter being rich in, porous structure, alkaline nature, soil physical and chemical property, Tiny ecosystem can be significantly improved
Environment, to achieve the effect that comprehensive promotion soil quality.
Detailed description of the invention
Fig. 1 is the crop growth conditions figure that cultivation experiments are used for by different iron wormcasts of the embodiment of the present invention.
Specific embodiment
In order to be best understood from the technology of the present invention content, specific embodiment is provided below, the present invention is described further.
Experimental method used in the embodiment of the present invention is conventional method unless otherwise specified.
Material used in the embodiment of the present invention, reagent etc., are commercially available unless otherwise specified.
A kind of preparation method of rich iron wormcast of embodiment 1-, includes the following steps:
Step 1: iron powder being carried out to crushed 16 meshes, obtains the evengranular iron powder material of partial size≤1mm；
Step 2: it after the cow dung after everfermentation is carried out natural air drying, then carries out crushing and crosses 16 meshes, obtain partial size
The evengranular cow dung of≤1mm is expected；
Step 3: iron powder material is added in cow dung material according to 5% mass ratio and is uniformly mixed, and is put into batch mixer
In, keeping the temperature of blender is 23 DEG C, and mixing time 30min is stirred evenly, and obtains mixing initial material；
Step 4: mixing initial material being put into rectangular Wooden container, is sprayed water into container, and the humidity in holding container is
60%, obtain mixed resin；
Step 5: by earthworm with density for 1.5 ten thousand/m2It is put into the rectangular Wooden container, and keeps container shady and cool, logical
Gas, the temperature in container are 30 DEG C, and humidity 60% cultivates 3 months, digests earthworm sufficiently mixed resin, conversion
At wormcast；
Step 6: earthworm and wormcast are successively separated by the way of the scraping of surface according to the photophobism of earthworm:
Step 7: the wormcast of acquisition is tiled, and is carried out natural air drying, then crushed 10 meshes, is obtained partial size≤2mm
Iron content rich iron wormcast abundant.
A kind of preparation method of rich iron wormcast of embodiment 2-, includes the following steps:
Step 1: carrying out ground 20 mesh for iron powder, obtains the evengranular iron powder material of partial size≤1mm；The iron
The purity of powder is 80% or more；
Step 2: after the cow dung after everfermentation is carried out natural air drying, then carrying out ground 20 mesh, obtain partial size≤
The evengranular cow dung of 1mm is expected；
The fermentation of the cow dung is that the poidometer of fresh cow dung is added 15% sodium bicarbonate and is uniformly mixed, and is added
0.05% fermenting agent carries out anaerobic fermentation, and fermentation temperature is maintained at 55 DEG C, and fermentation time is 5 days；
Step 3: being heat-treated iron powder material, iron powder is placed under the nitrogen environment that temperature is 100 DEG C, is heat-treated 5h,
Iron powder material is added in cow dung material according to 10% mass ratio and is uniformly mixed, and is put into batch mixer, blender is kept
Temperature is 26 DEG C, and mixing time 40min is stirred evenly, and obtains mixing initial material；Wherein, it is mixed in iron powder material with cow dung material
It is preceding that iron powder material is heat-treated, iron powder is placed under the nitrogen environment that temperature is 10 DEG C, is heat-treated 5h；
Step 4: mixing initial material being put into rectangular Wooden container, is sprayed water into container, and the humidity in holding container is
80%, obtain mixed resin；
Step 5: with density being 20,000/m by earthworm that size is 0.3g/ item2It is put into the rectangular Wooden container, and protects
Container cool place, ventilation are held, the temperature in container is 20 DEG C, and humidity 80% cultivates 4 months, carries out earthworm by mixed resin
Sufficiently digestion, is converted to wormcast；
Step 6: earthworm and wormcast are successively separated by the way of the scraping of surface according to the photophobism of earthworm；
Step 7: the wormcast of acquisition is tiled, and is carried out natural air drying, then ground 12 mesh, is obtained partial size≤2mm
Iron content rich iron wormcast abundant.
A kind of preparation method of rich iron wormcast of embodiment 3-, includes the following steps:
Step 1: carrying out ground 16 mesh for iron powder, obtains the evengranular iron powder material of partial size≤1mm；The iron
The purity of powder is 80% or more；
Step 2: after the cow dung after everfermentation is carried out natural air drying, then carrying out ground 16 mesh, obtain partial size≤
The evengranular cow dung of 1mm is expected；
The fermentation of the cow dung is that the poidometer of fresh cow dung is added 20% sodium bicarbonate and is uniformly mixed, and is added
0.5% fermenting agent carries out anaerobic fermentation, and fermentation temperature is maintained at 60 DEG C, and fermentation time is 10 days；
Step 3: iron powder material is added in cow dung material according to 20% mass ratio and is uniformly mixed, and is put into batch mixer
In, keeping the temperature of blender is 25 DEG C, and mixing time 35min is stirred evenly, and obtains mixing initial material；Wherein, in iron powder
Material is heat-treated iron powder material before mixing with cow dung material, iron powder is placed under the nitrogen environment that temperature is 120 DEG C, heat treatment
8h；
Step 4: mixing initial material being put into rectangular Wooden container, is sprayed water into container, and the humidity in holding container is
70%, obtain mixed resin；
Step 5: with density being 1.8 ten thousand/m by earthworm that size is 0.5g/ item2It is put into the rectangular Wooden container, and
Container cool place, ventilation are kept, the temperature in container is 25 DEG C, and humidity 75% cultivates 4 months, in cultivation to 2 months or more
When, the temperature in the wooden square container is adjusted to 20 DEG C, humidity 60%；Make earthworm that mixed resin sufficiently to be disappeared
Change, is converted to wormcast；
Step 6: earthworm and wormcast are successively separated by the way of the scraping of surface according to the photophobism of earthworm:
Step 7: the wormcast of acquisition is tiled, and is carried out natural air drying, then ground 10 mesh, is obtained partial size≤2mm
Iron content rich iron wormcast abundant.
A kind of preparation method of rich iron wormcast of comparative example 1-, the difference with embodiment 3 are: step 1 and step 2
In, the grain diameter of the iron powder material and cow dung material is≤2mm, remaining parameter is same as Example 3.
A kind of preparation method of rich iron wormcast of comparative example 2-, the difference with embodiment 3 are: step 1 and step 2
In, the grain diameter of the iron powder material and cow dung material is≤0.03mm, remaining parameter is same as Example 3.
A kind of preparation method of rich iron wormcast of comparative example 3-, the difference with embodiment 3 are: in step 3, by iron powder
It is added in cow dung material according to 25% mass ratio and is uniformly mixed, remaining parameter is same as Example 3.
A kind of preparation method of rich iron wormcast of comparative example 4-, the difference with embodiment 3 are: in step 5, by earthworm
With density for 2.1 ten thousand/m2It is put into rectangular Wooden container, remaining parameter is same as Example 3.
A kind of preparation method of rich iron wormcast of comparative example 5-, the difference with embodiment 3 are:, will be fresh in step 2
By weight, 0.5% fermenting agent is only added in cow dung, carries out anaerobic fermentation, and fermentation temperature is maintained at 60 DEG C, fermentation time 10
It, remaining parameter is same as Example 3.
A kind of preparation method of rich iron wormcast of comparative example 6-, the difference with embodiment 3 are: in step 3, to iron powder
Material is heat-treated, and it is to be heat-treated 9h under 130 DEG C of nitrogen environment that iron powder, which is placed in temperature, remaining parameter with 3 phase of embodiment
Together.
By the rich iron wormcast by being prepared into respectively in Examples 1 to 3 and comparative example 1~6, total iron content and iron are carried out
Transformation efficiency is measured, and statistics and comparison result are as follows:
As can be seen from the above table, the rich iron wormcast being prepared by the embodiment of the present invention 1~3, total iron content significantly improve,
Can reach 14.4g/kg, while earthworm also obviously increases the transformation efficiency of iron, and in embodiment 3 by iron powder material according to
20% mass ratio is mixed with cow dung material, the total iron content highest of obtained richness iron wormcast.
And compare embodiment 3 with comparative example 1,2, show the certain granules partial size of control iron powder material and cow dung material
Range advantageously ensures that iron powder material and cow dung material in smaller and consistent grain diameter, guarantee mixing well between the two, iron
Dispersion effect it is more uniform, promote the digestion and absorption of earthworm, improve the total iron content and transformation efficiency of wormcast.By embodiment
3 be compared with comparative example 3 it is found that iron powder material and cow dung material optimum mixture ratio example range be 5~20%, it is excessively high to influence instead
Earthworm is to the transformation efficiency of iron and the total iron content of wormcast.Embodiment 3 and comparative example 4 are compared it is found that putting in a suitable place to breed for earthworm is close
Degree influences the activities such as feeding, digestion, the excretion of earthworm, and then influences the total iron content of final wormcast.By embodiment 3 and comparison
The comparison of example 5,6 is it is found that by being heat-treated to cow dung fermentation process under certain condition and under certain condition iron powder, favorably
In the transformation efficiency and total iron content that improve iron.
By the mixed resin as made of different iron powder material and cow dung material mixed proportion, obtained richness iron wormcast is used
In the cultivation experiments for carrying out crop, it is provided with experimental group are as follows: rich iron wormcast, iron powder material of the iron powder material material additive amount for 5%
Expect the rich iron wormcast and pure wormcast that the rich iron wormcast that additive amount is 10%, iron powder material material additive amount are 20%, unites respectively
Count the cadmium arsenic available state in upgrowth situation, the influence to soil physico-chemical property and its soil of plant, statistical result such as following table
With shown in Fig. 1:
As can be seen from the above table, pure wormcast is substantially better than to the passivation ability of Cadmium in Soil arsenic using rich iron wormcast, and
The rich iron wormcast for being 20% with iron powder material material additive amount, optimal to the passivation ability of Cadmium in Soil arsenic, the growth quality of crop is good,
Its plant height and biomass significantly improve.
As can be seen from the above table, using pure wormcast and iron-based wormcast can obviously increase soil pH, organic matter and
Cation exchange capacity (CEC) promotes soil quality.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of richness iron wormcast, characterized by the following steps:
Step 1: crushed 16~20 meshes for iron powder, obtain the evengranular iron powder material of partial size≤1mm；
Step 2: after the cow dung after everfermentation is carried out natural air drying, then 16~20 meshes be crushed, obtains partial size≤1mm
Evengranular cow dung material；
Step 3: iron powder material is added in cow dung material according to 5~20% mass ratio and is uniformly mixed, and is put into batch mixer
In, 30 DEG C of temperature < of blender are kept, mixing time > 20min is stirred evenly, and obtains mixing initial material；
Step 4: mixing initial material being put into container, and is sprayed water into container, and keeping the humidity in container is 60~80%, is obtained
To mixed resin；
Step 5: by earthworm with density for 1.5~20,000/m2It is put into the container, and keeps container cool place, ventilation, in container
Temperature be 20~30 DEG C, humidity be 60~80%, cultivate 3~4 months, digest earthworm mixed resin sufficiently, turn
It is melted into wormcast；
Step 6: earthworm and wormcast are successively separated by the way of the scraping of surface according to the photophobism of earthworm:
Step 7: the wormcast of acquisition is tiled, and is carried out natural air drying, then crushed 10~12 meshes, is obtained partial size≤2mm
Iron content rich iron wormcast abundant.
2. a kind of preparation method of rich iron wormcast according to claim 1, it is characterised in that: step 1, the iron powder
Purity be 80% or more.
3. a kind of preparation method of rich iron wormcast according to claim 1, it is characterised in that: step 1 and step 2
In, the grain diameter of the iron powder material and cow dung material is 0.05~1mm.
4. a kind of preparation method of rich iron wormcast according to claim 1, it is characterised in that: step 3, the mixing
Temperature in device is 23~26 DEG C, and the mixing time is 30~40min.
5. a kind of preparation method of rich iron wormcast according to claim 1, it is characterised in that: step 2, the cow dung
Fermentation be by fresh cow dung by weight, be added 15~20% sodium bicarbonates be uniformly mixed, and be added 0.05~0.5% fermentation
Microbial inoculum carries out anaerobic fermentation, and fermentation temperature is maintained at 55~60 DEG C, and fermentation time is 5~10 days.
6. a kind of preparation method of rich iron wormcast according to claim 1, it is characterised in that: step step 3, in iron
Before powder is mixed with cow dung material, iron powder material is heat-treated, iron powder is placed under the nitrogen environment that temperature is 100~120 DEG C,
It is heat-treated 5~8h.
7. a kind of preparation method of rich iron wormcast according to claim 1, it is characterised in that: step 5 is put into container
In earthworm size be 0.3~0.5g/ item.
8. a kind of preparation method of rich iron wormcast according to claim 1, it is characterised in that: step 5, described in control
Temperature in container is 25 DEG C, humidity 75%.
9. a kind of preparation method of rich iron wormcast according to claim 8, it is characterised in that: step 5, in cultivation to 2
At a month or more, the temperature in the container is adjusted to 20 DEG C, humidity 60%.
10. a kind of rich iron wormcast being prepared such as any one of claim 1~9 is in the improvement of Cadmium in Soil arsenic pollution
Using.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924384.9A CN110521538B (en) | 2019-09-27 | 2019-09-27 | Preparation method of iron-rich wormcast and application of iron-rich wormcast in soil pollution treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924384.9A CN110521538B (en) | 2019-09-27 | 2019-09-27 | Preparation method of iron-rich wormcast and application of iron-rich wormcast in soil pollution treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110521538A true CN110521538A (en) | 2019-12-03 |
| CN110521538B CN110521538B (en) | 2021-03-23 |
Family
ID=68670632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910924384.9A Active CN110521538B (en) | 2019-09-27 | 2019-09-27 | Preparation method of iron-rich wormcast and application of iron-rich wormcast in soil pollution treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110521538B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355102A (en) * | 2021-06-25 | 2021-09-07 | 中国热带农业科学院环境与植物保护研究所 | Method for improving quality and efficiency of tropical sandy farmland soil |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786929A (en) * | 2010-03-19 | 2010-07-28 | 沈阳尊龙生物技术有限公司 | Method utilizing wormcast to manufacture biological organic fertilizer |
| CN105750323A (en) * | 2016-05-18 | 2016-07-13 | 山东省农业科学院农业资源与环境研究所 | Farmland chromium pollution remediation method under planting production condition |
| KR20180020812A (en) * | 2016-08-19 | 2018-02-28 | 김병한 | Earthworm breed structure |
| CN107774704A (en) * | 2017-10-09 | 2018-03-09 | 辽宁大学 | A kind of method of heavy metal copper in plant animal microbial association rehabilitating soil |
| CN107996521A (en) * | 2017-12-05 | 2018-05-08 | 沈阳尊龙生物技术有限公司 | The cultural method and accessory substance selenium-enriched earthworm excrement of a kind of selenium-enriched earthworm |
| CN108077190A (en) * | 2017-12-29 | 2018-05-29 | 黄河三角洲京博化工研究院有限公司 | A kind of selenium-enriched earthworm powder and its application |
| CN108817047A (en) * | 2018-04-19 | 2018-11-16 | 郭婷 | The restorative procedure of soil after a kind of pollution |
| CN109160859A (en) * | 2018-09-27 | 2019-01-08 | 湖南省农业环境生态研究所 | A method of biological organic fertilizer is produced using dealing with earthworm animal faeces wastes |
| US20190218153A1 (en) * | 2018-01-13 | 2019-07-18 | Earnest Earth Agriculture, Inc. | Vermiculture bioreactor system and method of use |
| CN110214494A (en) * | 2019-06-24 | 2019-09-10 | 含山县贝亲生物科技有限公司 | A kind of fast repairing method of alkaline land soil |
-
2019
- 2019-09-27 CN CN201910924384.9A patent/CN110521538B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786929A (en) * | 2010-03-19 | 2010-07-28 | 沈阳尊龙生物技术有限公司 | Method utilizing wormcast to manufacture biological organic fertilizer |
| CN105750323A (en) * | 2016-05-18 | 2016-07-13 | 山东省农业科学院农业资源与环境研究所 | Farmland chromium pollution remediation method under planting production condition |
| KR20180020812A (en) * | 2016-08-19 | 2018-02-28 | 김병한 | Earthworm breed structure |
| CN107774704A (en) * | 2017-10-09 | 2018-03-09 | 辽宁大学 | A kind of method of heavy metal copper in plant animal microbial association rehabilitating soil |
| CN107996521A (en) * | 2017-12-05 | 2018-05-08 | 沈阳尊龙生物技术有限公司 | The cultural method and accessory substance selenium-enriched earthworm excrement of a kind of selenium-enriched earthworm |
| CN108077190A (en) * | 2017-12-29 | 2018-05-29 | 黄河三角洲京博化工研究院有限公司 | A kind of selenium-enriched earthworm powder and its application |
| US20190218153A1 (en) * | 2018-01-13 | 2019-07-18 | Earnest Earth Agriculture, Inc. | Vermiculture bioreactor system and method of use |
| CN108817047A (en) * | 2018-04-19 | 2018-11-16 | 郭婷 | The restorative procedure of soil after a kind of pollution |
| CN109160859A (en) * | 2018-09-27 | 2019-01-08 | 湖南省农业环境生态研究所 | A method of biological organic fertilizer is produced using dealing with earthworm animal faeces wastes |
| CN110214494A (en) * | 2019-06-24 | 2019-09-10 | 含山县贝亲生物科技有限公司 | A kind of fast repairing method of alkaline land soil |
Non-Patent Citations (4)
| Title |
|---|
| 单颖 等: "施用不同配比蚯蚓粪对海南耕地砖红壤肥力特性的影响", 《华北农学报》 * |
| 单颖 等: "蚯蚓粪对土壤环境质量和作物生长影响的研究现状与展望", 《热带农业科学》 * |
| 李扬 等: "蚯蚓粪作为土壤重金属污染修复剂的潜力分析", 《农业环境科学学报》 * |
| 王丹丹: "蚯蚓及蚓粪对植物修复Cu、Zn污染土壤的影响", 《中国博士学位论文全文数据库（电子期刊） 工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355102A (en) * | 2021-06-25 | 2021-09-07 | 中国热带农业科学院环境与植物保护研究所 | Method for improving quality and efficiency of tropical sandy farmland soil |
| WO2022267261A1 (en) * | 2021-06-25 | 2022-12-29 | 中国热带农业科学院环境与植物保护研究所 | Method for improving properties and efficiency of tropical sandy farmland soil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110521538B (en) | 2021-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106754461B (en) | Biological floc and preparation method and application thereof | |
| US20190300407A1 (en) | Biological Floc and Uses Thereof, for example, in Sludge Innocent Treatment and Industrial Water Purification Treatment | |
| CN1275912C (en) | Method for manufacturing fertilizer by utilizing organic waster materials from cattle farm | |
| CN108218565A (en) | Alkaline soil improver and preparation method thereof | |
| CN107162656A (en) | A kind of feces of livestock and poultry superhigh temperature compost method | |
| CN102319726B (en) | Method for comprehensively utilizing low-concentration heavy metal-containing soil improvement and repairing damaged soil by plants after detoxification of contaminated field | |
| CN102660487B (en) | Geobacillus sp. UTM02 and application thereof | |
| CN109437989B (en) | Method for preparing culture medium by using pecan shells as raw materials | |
| CN101817702A (en) | Special bio-organic fertilizer for peaches and preparation method thereof | |
| CN104987267A (en) | Production technology for preparing soil improvement agent through resource utilization of sheep manure | |
| CN104446683A (en) | Comprehensive treatment technology for municipal domestic sludge | |
| CN103708967A (en) | Method for producing organic fertilizer by using pig manures | |
| CN106831052A (en) | A kind of method that utilization biogas slurry prepares charcoal base organic fertilizer | |
| CN106946630A (en) | A kind of organic fungi-manure using sludge as raw material and preparation method thereof | |
| CN114907161B (en) | Organic fertilizer containing biocontrol microbial inoculum and preparation method thereof | |
| CN102776138A (en) | Compound microorganism preparation for materialized sludge treatment and method for preparing same | |
| CN112898059A (en) | Chicken manure and straw mixed fermentation bio-organic fertilizer and preparation method thereof | |
| CN107129327A (en) | Microbial manure and preparation method thereof | |
| CN104926535A (en) | Spirulina peptide bio-organic fertilizer | |
| CN104293719B (en) | Fast decomposing agent for fermentation bed aging padding, organic fertilizer and production method of organic fertilizer | |
| CN109835881A (en) | A kind of modification biological charcoal, charcoal base organic fertilizer and preparation method thereof and its application | |
| CN103319269B (en) | Chicken manure, pig manure and pleurotus eryngii mushroom bran-containing organic fertilizer and preparation method thereof | |
| CN109134008A (en) | A method of organic fertilizer is prepared using microorganism decomposition pig manure | |
| CN113142014A (en) | Alkaline river silt-based garden green planting soil and preparation method thereof | |
| CN113135788A (en) | Production process for preparing organic fertilizer by mixed fermentation of Maotai-flavor liquor vinasse and waste pit mud |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |