CN101407437B - Method for inhibiting carbon dioxide released by mineralizing organic material - Google Patents
Method for inhibiting carbon dioxide released by mineralizing organic material Download PDFInfo
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- CN101407437B CN101407437B CN2008101950788A CN200810195078A CN101407437B CN 101407437 B CN101407437 B CN 101407437B CN 2008101950788 A CN2008101950788 A CN 2008101950788A CN 200810195078 A CN200810195078 A CN 200810195078A CN 101407437 B CN101407437 B CN 101407437B
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- organic materials
- pig manure
- mud
- rice straw
- ferric hydroxide
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Abstract
The invention relates to a method for inhibiting the release of carbon dioxide caused by the mineralization of organic materials, which belongs to the technical field of resource reuse and comprises the following steps: (1) organic materials are collected, which mainly comprise sludge, pig manure or paddy straw; (2) the organic materials are respectively dried and crashed into 60-mesh powder; (3) according to the proportion that 5ml of 0.2mol/L ferric hydroxide colloid is added to every 10g of dried organic materials, granulation is carried out; and (4) at room temperature, the granules are aired and aged for about 8-15 days to prepare the dry granular products of the sludge, the pig manure or the paddy straw. The method has the advantages of simple operation and low cost; the product prepared by the method can effectively reduce the degradation rate of the organic materials, thus being beneficial for climatic environment protection. The method can be further popularized as a way of large-scale treatment of the organic materials, and the product can be used both as an effective organic material and a soil improvement agent, thereby achieving the effect of killing two birds with one stone.
Description
Technical field
The present invention relates to a kind of method that suppresses carbon dioxide released by mineralizing organic material, belong to the resource reutilization technical field.
Background technology
In recent years, caused the very big concern of countries in the world government and health, environment, agricultural sector such as organic materials problems such as crop material, feces of livestock and poultry, municipal wastes, mud.According to statistics, about 200,000 tons of the annual discharging in China municipal sewage plant dewatered sludge, and with annual 20% speed increase.And about 2,700,000,000 tons of the annual emissions of poultry technology dirt, the processing and utilizing rate is less than 5%.The agricultural crop straw in China every year just has more than 500,000,000 ton, and the on-site incineration phenomenon is more serious.Modes such as traditional landfill, burning are handled, and not only take a large amount of land resources, and have caused topsoil.
The large amount of organic material directly is manured into soil, and its effect as farm crop fertilizer is not obvious, and the required nutrient of farm crop mainly is to replenish by chemical fertilizer.The effect of organic materials in soil mainly is to improve Soil structure, increases the soil organism, and can be used as soil improvement agent and be widely used.But through behind the mineralising decomposition, only some organic substance is fixed in the soil organic materials in soil, also has quite a few mineralising to become carbonic acid gas isothermal chamber gas and is directly released in the atmosphere.The annual large amount of organic material that produces of China is considerable by the quantity of mineralising release of carbon dioxide, and it will affect to climatope.The greenhouse gases in TERRESTRIAL ECOSYSTEMS carbon storehouse reserves and fields such as differentiation, agricultural and industry thereof discharge situation has become the main flow research direction that international scientific circle is served whole world change control in reducing discharging the research of potentiality in problems such as approach.The Chinese government pays much attention to the Global climate change problem, has successively taked a series of action to deal with the challenge of Global climate change, and reduction of greenhouse gas discharge, biological carbon-fixation-technology and solid carbon engineering have been put into the medium-term and long-term scientific and technical development program of China.
How to increase the ratio that organic materials is fixed in agricultural soil, that is how effectively to suppress its carbonic acid gas and discharge, realize the carbon effectively admittedly of organic materials in the agricultural soil, thereby improve agrological solid carbon ability, make corresponding contribution for the reply climate change, this will have great social significance and global meaning.This seminar in the research of solid carbon mechanism, be reported that rice soil ferric oxide the protection of organic carbon with stable in important contribution is arranged.Therefore consider whether can reach the purpose that suppresses carbonic acid gas release by in organic materials, adding ferric oxide.
Summary of the invention
Technical problem
The present invention is practical application with existing scientific research theoretical conversion, a kind of method of handling organic materials that provides is provided, it not only can suppress carbon dioxide released by mineralizing organic material, and this method principle also has further popularization and carries out the potentiality that mass product is produced, and products obtained therefrom can be used as organic fertilizer and soil improvement agent.
Technical scheme
Principle of work of the present invention: collect organic materials (mud, pig manure or rice straw), air-dry respectively be ground into Powdered, add the moistening and vibration granulation of ferric hydroxide colloid with certain proportioning, the uniform mud of collection cut size, pig manure or rice straw particle carry out room-dry, ferric hydroxide colloid will air-dryly gradually wear out into solid-state ferric oxide during this time, thereby with organic materials and ferric oxide thorough mixing.Ferric oxide can suppress organic materials particulate degradation rate effectively, and then can slow down its mineralising release of carbon dioxide.
The present invention includes following operating process:
1, the collection of organic materials
Collect three kinds of organic materialss: mud, pig manure or rice straw.To roll pulverization process earlier greater than mud, the pig manure of 5cm in the collection process; Rice straw cuts with the length of chopper about by 5cm.
2, air-dry pulverizing
Mud, pig manure are tiled on the clean plastic cloth, and normal temperature ventilates and regularly stirs natural air drying down; Stalk is positioned in 60 ℃ the baking oven oven dry a few hours to constant weight.Mud after air-dry, pig manure are placed on the rolled plate, grind by 60 order nylon mesh with grinding cane; Rice straw after the oven dry is put into pulverizer pulverize, and by 60 order nylon mesh.
3, ferric hydroxide colloid preparation
Take by weighing a certain amount of solid-state iron nitrate, use the deionized water dissolving constant volume, make the iron nitrate solution of 0.2 mol.Solution is transferred in the glass beaker, and beaker is positioned over high-speed stirring on the magnetic stirring apparatus, slowly drips strong aqua and regulate pH in beaker, till producing colloid russet, thereby makes ferric hydroxide colloid.
4, organic materials granules preparation
Taking by weighing a certain amount of organic materials powder respectively in plastic containers, is the ferric hydroxide colloid that the ratio of 2:1 is measured respective volume in the solid-liquid mass volume ratio, sprays moistening organic materials powder with the large vol watering can.200 rev/mins, after the normal temperature condition vibration granulation, to collect less than 3mm and globule size homogeneous granules, residuum disperses granulation again with the light pressure of banister brush is loose.
5, the organic materials particulate is air-dry aging
The particles dispersed of collecting is tiled on the clean plastic cloth, about natural air drying 8-15 days, during can suitably ventilate, up to the hard drying of particle, gently pinch and be difficult for till the fragmentation, can make the particulate product of mud, pig manure or rice straw.
Beneficial effect
Advantage that the present invention has and positively effect: organic materials treatment process of the present invention, comprise air-dry pulverizing and granulation aged operating process, the organic materialss such as treatment plant's mud, rural area feces of livestock and poultry, agricultural crop straw of disposing of sewage, method is simply effective, can obviously reduce the degradation rate of organic materials, the mineralising that suppresses its carbonic acid gas discharges.Under 27 days constant temperature (25 ℃) culture condition by a definite date, the CO of mud, pig manure and rice straw
2The cumulative release amount is respectively 5286.81,5424.96 and 10933.84mg CO
2-C/kg, and after adding ferric oxide, its CO
2The cumulative release amount significantly reduces to 1472.46,1534.01 and 124.82mg CO respectively
2-C/kg.During 90 days by a definite date field nature mineralising, the organic carbon degradation rate of mud, pig manure and rice straw is respectively 19.90%, 14.91% and 34.06%, and after adding ferric oxide, its organic carbon degradation rate significantly is reduced to 14.24%, 9.45% and 24.25% respectively.No matter be laboratory constant temperature culture or field nature mineralising, ferric oxide all can obviously suppress the mineralizing and degrading of organic materials.
Description of drawings
Fig. 1 is the schematic flow sheet that organic materials adds ferric oxide;
Fig. 2 is the preparation synoptic diagram of ferric hydroxide colloid;
Fig. 3 is under 25 ℃ of constant temperature culture conditions, and ferric oxide suppresses the effect synoptic diagram of carbon dioxide released by mineralizing organic material;
Fig. 4 is under the natural condition of field, and ferric oxide suppresses the effect synoptic diagram that the organic materials mineralising is decomposed, increased residual organic carbon content.
Wherein, triangle-organic materials adds deionized water gained particle, and block symbol-organic materials adds ferric hydroxide colloid gained particle.
Embodiment
For further understanding characteristics of the present invention and effect, add ferric hydroxide colloid below by utilization the present invention and make organic materials particulate method, enumerate embodiment and be elaborated, but the present invention is not limited to selected organic materials kind, and ferric hydroxide colloid also can obtain by other approach.
(embodiment 1)
With reference to accompanying drawing 1, Fig. 2 and Fig. 3.
Organic materials treatment process of the present invention is collected mud, pig manure or rice straw respectively, and bulk mud and pig manure pulverizing is air-dry, and rice straw cutting oven dry is ground into 60 purpose powder.Restrain the organic materials powder by 10: the granulation respectively of the formula rate of 5 milliliters of ferric hydroxide colloids, in addition by 10 gram powder: the formula rate granulation of 5 ml deionized water in contrast, the water that makes mud, pig manure or rice straw respectively makes particle and ferric hydroxide colloid is made particle.Collect granularity less than the particle of 3mm and air-dryly be aged to hard drying.Take by weighing a certain amount of particle and put into culturing bottle, regulate moisture to 60% of each organic materials water retaining capacity, the jam-pack bottleneck, 25 ± 1 ℃ of constant temperature culture, and gas concentration lwevel in the bottle is measured in gas production at interval.This method is used under the laboratory condition, can measure the influence of ferric oxide to the organic materials mineralising rapidly and sensitively, and specific operation process is:
1. the collection of organic materials and pulverizing
Collect three kinds of organic materialss: mud, pig manure or rice straw.Granularity is rolled pulverization process earlier greater than mud, the pig manure of 5cm; Rice straw cuts with the length of chopper about by 5cm.Mud, pig manure are tiled on the clean plastic cloth, and normal temperature ventilates and regularly stirs natural air drying down; Stalk is positioned in 60 ℃ the baking oven oven dry a few hours to constant weight.Mud after air-dry, pig manure are placed on the rolled plate, grind by 60 order nylon mesh with grinding cane; Rice straw after the oven dry is put into pulverizer pulverize, and by 60 order nylon mesh.
2. the preparation of ferric hydroxide colloid
Take by weighing a certain amount of solid nitric acid iron, use the deionized water dissolving constant volume, make the iron nitrate solution of 0.2 mol.Solution is transferred in the glass beaker, and beaker is positioned over high-speed stirring on the magnetic stirring apparatus, slowly drips strong aqua and regulate pH in beaker, till producing colloid russet, thereby makes ferric hydroxide colloid.
3. granules preparation is with aging
Taking by weighing a certain amount of organic materials powder respectively in plastic containers, is ferric hydroxide colloid or the deionized water that the ratio of 2:1 is measured respective volume in solid-to-liquid ratio, sprays moistening organic materials powder with the large vol watering can.Collect less than 3mm and size homogeneous granules after the vibration granulation, residuum disperses granulation again with the light pressure of banister brush is loose.The particles dispersed of collecting is tiled on the clean plastic cloth, about natural air drying 8-15 days,, gently pinches and be difficult for till the fragmentation, promptly make the product particle of mud, pig manure or rice straw up to the hard drying of particle.
4. constant indoor temperature is cultivated mineralising
The water that takes by weighing mud, pig manure or rice straw is respectively made particle and ferric hydroxide colloid and is made particulate samples 10g and put into the 125mm culturing bottle, three repetitions of each sample.In bottle, accurately drip a certain amount of distilled water then, do not stir sample, regulate moisture, in bottle, be blown into high purity air immediately to 60% of each organic materials water retaining capacity, then clog bottleneck with silica gel plug, and with the space between 704 glue sealings bottleneck and the stopper.There is an aperture centre of silica gel plug, and the interpolation Glass tubing overlaps one section silica gel hose again outside the pipe, with the silica gel plug jam-pack flexible pipe port that is fit to, as the gas sampling mouth, put into 25 ± 1 ℃ constant incubator then.Gas concentration lwevel (gas chromatograph) in the bottle is measured in gas production after 12 hours.Pull up silica gel plug then, charge into high pure air, cover silica gel plug, put into constant incubator again to drive away gas in the bottle.Every gas production in 12 hours mensuration once measured once every gas production in 1 day thereafter in first day, and then according to the timetable that sequences, measured repeatedly according to top step, with the culturing bottle that does not add sample in contrast, incubation time is 27 days simultaneously.
The CO of each organic materials between incubation period
2Discharge and dynamically see accompanying drawing 3.Between whole incubation period, the CO of rice straw under the ironic hydroxide granulation
2Burst size all was starkly lower than the deionized water granulation, reached maximum value 133.13mg CO at the 5th day
2-C/kg/d, and its CO under the deionized water granulation
2Burst size promptly reached maximum value 1176.89mg CO at the 1.5th day
2-C/kg/d, after this CO
2Burst size reduces gradually, reaches stable after the 15th day.The CO of pig manure under the ironic hydroxide granulation
2Burst size also was to be starkly lower than the deionized water granulation always, reached maximum value 143.40mg CO at the 1.5th day
2-C/kg/d reached stable after the 13rd day, and its CO under the deionized water granulation
2The luffing of burst size is bigger, and maximum burst size appears at the 1st day, is 400.93mg CO
2-C/kg/d.In three kinds of organic materialss, ferric oxide discharges CO to the rice straw mineralising
2Restraining effect the most obvious, its CO under the deionized water granulation
2Burst size reached maximum value 1571.32mgCO at the 1st day
2-C/kg/d reached stable after the 17th day, and CO under the ironic hydroxide granulation
2The maximum value of burst size only is 14.25mg CO
2-C/kg/d reached stable after the 9th day.By calculating the preceding 23 days CO of each organic materials constant temperature culture
2The cumulative release amount can find out more significantly that ferric oxide discharges CO to the organic materials mineralising
2Restraining effect.As shown in Figure 3, do not add under the ferric oxide CO of rice straw, pig manure and mud
2The cumulative release amount is respectively 10933.84,5424.96 and 5286.81mg CO
2-C/kg, and after adding ferric oxide, its CO
2The cumulative release amount significantly is reduced to 124.82,1534.01 and 1472.46mg CO respectively
2-C/kg.As seen, ferric oxide is the organic carbon in the fixing organic materials effectively, reduces it and discharge CO in the organic materials degradation process
2
(embodiment 2)
With reference to accompanying drawing 1, Fig. 2 and Fig. 4.
The organic materials treatment process is collected mud, pig manure or rice straw respectively, and bulk mud and pig manure pulverizing is air-dry, and rice straw cutting oven dry is ground into 60 purpose powder.Restrain the organic materials powder by 10: the granulation respectively of the formula rate of 5 milliliters of ferric hydroxide colloids, in addition by 10 gram powder: the formula rate granulation of 5 ml deionized water in contrast, the water that makes mud, pig manure or rice straw respectively makes particle and ferric hydroxide colloid is made particle.Collect granularity less than the particle of 3mm and air-dryly be aged to hard drying.Take by weighing a certain amount of particle and pack in the nylon net bag, imbed farmland nature mineralising.From imbedding, regularly take a sample, measure organic carbon content, and calculate the degradation rate of organic carbon.This method is further analyzed under the field condition ferric oxide to the influence of organic materials mineralising on the basis of existing laboratory result.Specific operation process is as follows:
1. the collection of organic materials and pulverizing are with embodiment 1
2. the preparation of ferric hydroxide colloid is with embodiment 1
Granules preparation with aging with embodiment 1
4. field nature mineralising
Each organic materials particulate samples is packed in the 300 purpose nylon net bags (10cm * 13.5cm), and with the sack sealing, imbed then in the farmland of the about deeply 15cm of topsoil, the overhead about 5cm in bag top, crop is not planted on the face of land, and every kind of organic materials is handled three repetitions, random alignment are set.Time sampling in the 30th, 60,90 day ground 60 mesh sieves after sample is air-dry from imbedding, and measured its organic carbon content with the CNS elemental analyser, and the degradation rate of calculating organic carbon.
Each organic materials is seen accompanying drawing 4 in the organic carbon content variation of each sampling period during the mineralising of field.Before the mineralising of field, the organic carbon content that adds each organic materials under the ferric oxide to do not add ferric oxide under similar.After the mineralising 30 days, the organic carbon content of each organic materials all has obvious minimizing, but adds the organic materials behind the ferric oxide, and the content of its residual organic carbon is apparently higher than not adding under the ferric oxide.After the mineralising 60 days and 90 days, the organic carbon of rice straw and pig manure still has the trend of obvious minimizing, but adds under the ferric oxide, and the organic carbon residual quantity is still obviously higher.And mud is in mineralising after 30 days, its organic carbon content kept stable.That is to say that under the field condition, ferric oxide can obviously suppress the mineralising of organic materials, its solid carbon effect highly significant.By calculating each organic materials, as shown in Figure 4, can further illustrate this restraining effect of ferric oxide at the degradation rate of mineralising after 90 days.Do not add under the ferric oxide, the organic carbon degradation rate of rice straw, pig manure and mud is respectively 34.06%, 14.91% and 19.90%, and behind the interpolation ferric oxide, the organic carbon degradation rate obviously drops to 24.25%, 9.45% and 14.24% respectively.This result shows that this method has the application of being implemented does not have dirty harmless treatment as fairly large organic materials potentiality.
Claims (5)
1. method that suppresses carbon dioxide released by mineralizing organic material comprises the collection of organic materials, air-dry, pulverizing, granulation, weathering process, it is characterized in that:
(1) collect mud, pig manure or rice straw material respectively, the granularity of controlling above-mentioned material is less than 5cm;
(2) air-dry mud or pig manure, or oven dry rice straw;
(3) it is Powdered the exsiccant material to be ground into 60 purposes;
(4) ratio of adding 5 milliliters of ferric hydroxide colloids in per 10 gram materials, respectively mud, pig manure or rice straw powder are mixed with ferric hydroxide colloid, the granulation of vibrating under 200 rev/mins, normal temperature condition is collected the particle of granularity less than 3mm, the granulation of vibrating again after remainder particulate is broken up;
(5) under the normal temperature ventilation condition,,, make the particulate product of available mud, pig manure or rice straw until being dried particulate with the air-dry aging 8-15 of organic materials particle days.
2. method according to claim 1 is characterized in that: described material is mud, pig manure or rice straw, will roll pulverization process earlier greater than mud, the pig manure of 5cm in the collection process, just begins then to collect; Rice straw cuts by the length of 5cm with chopper.
3. method according to claim 1 and 2 is characterized in that: mud, pig manure are tiled on the clean plastic cloth, and normal temperature ventilates and regularly stirs natural air drying down; Rice straw is positioned in 60 ℃ the baking oven oven dry a few hours to constant weight.
4. method according to claim 1 and 2, wherein the preparation method of ferric hydroxide colloid is, take by weighing a certain amount of solid nitric acid iron, use the deionized water dissolving constant volume, make the iron nitrate solution of 0.2 mol, solution is placed high-speed stirring on the magnetic stirring apparatus, in beaker, drip strong aqua and regulate pH, till producing colloid russet, thereby make ferric hydroxide colloid.
5. method according to claim 3, wherein the preparation method of ferric hydroxide colloid is, take by weighing a certain amount of solid nitric acid iron, use the deionized water dissolving constant volume, make the iron nitrate solution of 0.2 mol, solution is placed high-speed stirring on the magnetic stirring apparatus, in beaker, drip strong aqua and regulate pH, till producing colloid russet, thereby make ferric hydroxide colloid.
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|---|---|---|---|
| CN2008101950788A CN101407437B (en) | 2008-10-29 | 2008-10-29 | Method for inhibiting carbon dioxide released by mineralizing organic material |
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| CN2008101950788A CN101407437B (en) | 2008-10-29 | 2008-10-29 | Method for inhibiting carbon dioxide released by mineralizing organic material |
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| CN101407437B true CN101407437B (en) | 2011-07-06 |
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| CN103125164A (en) * | 2013-03-14 | 2013-06-05 | 雷学军 | Method of increasing soil carbon sequestration capacity using organic fertilizers |
| CN113736470B (en) * | 2021-09-15 | 2022-07-19 | 昆明理工大学 | Method for preparing mining area soil conditioner from wet sludge in alpine and high-altitude areas |
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