CN114031442A - Method for improving stability of organic matters in organic fertilizer - Google Patents
Method for improving stability of organic matters in organic fertilizer Download PDFInfo
- Publication number
- CN114031442A CN114031442A CN202111514032.XA CN202111514032A CN114031442A CN 114031442 A CN114031442 A CN 114031442A CN 202111514032 A CN202111514032 A CN 202111514032A CN 114031442 A CN114031442 A CN 114031442A
- Authority
- CN
- China
- Prior art keywords
- organic
- organic fertilizer
- fertilizer
- stability
- industrial solid
- 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
- 239000003895 organic fertilizer Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 24
- 239000002910 solid waste Substances 0.000 claims abstract description 24
- 239000003337 fertilizer Substances 0.000 claims abstract description 23
- 238000000227 grinding Methods 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 14
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- 239000006228 supernatant Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007605 air drying Methods 0.000 claims abstract description 5
- 239000011268 mixed slurry Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000007873 sieving Methods 0.000 claims description 16
- 239000003864 humus Substances 0.000 claims description 15
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 9
- 239000005416 organic matter Substances 0.000 claims description 9
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 9
- 239000012498 ultrapure water Substances 0.000 claims description 9
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 8
- 239000010881 fly ash Substances 0.000 claims description 8
- 238000005119 centrifugation Methods 0.000 claims 1
- 238000010335 hydrothermal treatment Methods 0.000 abstract description 2
- 238000012216 screening Methods 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 229910021432 inorganic complex Inorganic materials 0.000 description 8
- 239000002689 soil Substances 0.000 description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000010668 complexation reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
-
- 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
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for improving the stability of organic matters in organic fertilizers, which comprises the steps of washing industrial solid waste water, drying and screening to obtain uniform particles, air-drying and screening the organic fertilizers to obtain uniform particles, mixing the industrial solid waste with the organic fertilizers, carrying out hydrothermal treatment, removing supernatant, drying, grinding and screening to obtain a compound fertilizer, wherein the stability of the organic matters of the compound fertilizer is superior to that of the original organic fertilizers; the method utilizes industrial solid wastes to fix and stabilize organic matters in the organic fertilizer, has low cost, can improve the utilization rate of the organic fertilizer while realizing the resource utilization of the industrial solid wastes, and achieves the effects of carbon fixation and fertilizer conservation.
Description
Technical Field
The invention relates to a method for improving the stability of organic matters in organic fertilizers, and relates to the technical field of solid waste utilization.
Background
Industrial waste refers to any undesirable solid, gas, or mixture produced or discharged from an industrial process. The treatment of industrial solid wastes is usually carried out by dumping them in situ near the plant, but these wastes contain harmful substances such as phosphates, fluorides, sulfates, trace radioactive elements and heavy metals, which cause serious environmental damage. Research is imperative to fully utilize industrial solid wastes, explore resource conservation and optimize and select environmental protection.
The organic fertilizer is prepared by fermenting and decomposing by-product resources rich in organic matters, such as animal excrement or animal and plant residues, serving as main raw materials. By applying the organic fertilizer, not only can the reduction of the fertilizer be realized, the farmland quality be improved, but also the resource utilization of agricultural production byproducts such as livestock and poultry manure, straws and the like can be realized, and the problems of environmental pollution caused by large-scale cultivation and atmospheric pollution caused by straw burning are solved. The organic matter content in the organic fertilizer is an important index for evaluating the fertility of the organic fertilizer, and in soil, the organic matter can form an organic-inorganic complex with inorganic minerals in the soil through the actions of adsorption, complexation and the like, so that the stability of the organic matter in the organic-inorganic complex is improved compared with the organic matter which is not combined with the minerals. However, the organic fertilizer is easy to run off, the utilization rate is low, only about 40 percent of the organic fertilizer can be absorbed by plants, and the improvement of the utilization rate of the organic fertilizer has very important significance.
Disclosure of Invention
The organic-inorganic complex is prepared by using the industrial solid waste and the organic fertilizer through hydrothermal reaction based on an organic-inorganic complex forming mechanism, so that the stability of organic matters in the organic fertilizer is improved, a new way is provided for resource utilization of the industrial solid waste, and the stability of the organic matters of the prepared complex is enhanced compared with that of the original organic fertilizer.
The technical scheme of the invention is as follows:
a method for improving the stability of organic matters in organic fertilizers specifically comprises the following steps:
(1) washing industrial solid waste water, drying, grinding and sieving with a 100-mesh sieve to obtain uniform industrial solid waste particles;
(2) air-drying and grinding the organic fertilizer and sieving the ground organic fertilizer with a 100-mesh sieve to obtain uniform organic fertilizer particles;
(3) putting the industrial solid waste in the step (1) and the organic fertilizer in the step (2) into a reaction kettle according to the mass ratio of 1 (1-2), adding ultrapure water according to the solid-liquid ratio of 1 (8-10), and carrying out hydrothermal reaction to obtain mixed slurry;
(4) and (4) centrifuging the mixed slurry obtained in the step (3) to remove supernatant, drying, grinding and sieving to obtain the compound fertilizer, wherein the organic matter stability of the compound fertilizer is superior to that of the original organic fertilizer.
The industrial solid wastes in the step (1) comprise phosphogypsum, fly ash and the like.
And (2) washing the industrial solid waste in the step (1) until the pH value of the washing liquid is not changed.
The organic fertilizer in the step (2) comprises wormcast organic fertilizer, forest humus and the like.
And (3) putting the reaction kettle into an oven, setting the temperature to be 100-200 ℃ and the time to be 5-10 h, and carrying out hydrothermal reaction.
And (4) centrifuging the mixed slurry in the step (4) for 5-20 min at the rotating speed of 3000-5000 rpm.
Organic matters in the organic fertilizer and minerals in industrial solid waste form an organic-inorganic complex through complexation, adsorption, coprecipitation and the like, and the stability of the organic matters in the organic-inorganic complex is far higher than that of the organic matters in the organic-inorganic complex formed by the structure of the organic-inorganic complex under the chemical protection action of the minerals.
The compound fertilizer is synthesized by adopting industrial solid wastes and organic fertilizers through hydrothermal synthesis, and when the compound fertilizer is chemically oxidized by using hydrogen peroxide, the organic matter oxidation resistance of the compound fertilizer is obviously improved compared with that of the original organic fertilizer; the industrial solid waste can obviously improve the stability of organic matters in the organic fertilizer, and can be applied to the technical field of solid waste utilization.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the scope of the present invention is not limited to the description.
Example 1
A method for improving the stability of organic matters in organic fertilizers comprises the following specific steps:
(1) washing the phosphogypsum with water until the pH value of washing liquor is not changed any more, drying, and grinding the phosphogypsum by using a 100-mesh sieve to obtain uniform particles;
(2) after the forest humus is air-dried, grinding and sieving the forest humus by a 100-mesh sieve to obtain uniform organic fertilizer particles;
(3) putting the phosphogypsum particles obtained in the step (1) and the forest humus particles obtained in the step (2) into a reaction kettle according to the mass ratio of 1:1, and adding ultrapure water according to the solid-liquid ratio g: mL of 1: 8;
(4) putting the reaction kettle in the step (3) into an oven, setting the temperature to be 150 ℃, reacting for 5 hours, and obtaining mixed slurry after hydrothermal reaction;
(5) and (4) centrifuging the mixed slurry obtained in the step (4) at the speed of 3500rpm for 15min, removing the supernatant, drying, grinding and sieving to obtain the hydrothermally synthesized phosphogypsum-forest humus soil compound.
Example 2
A method for improving the stability of organic matters in organic fertilizers comprises the following specific steps:
(1) washing the phosphogypsum with water until the pH value of washing liquor is not changed any more, drying, and grinding the phosphogypsum by using a 100-mesh sieve to obtain uniform particles;
(2) after being air-dried, the wormcast organic fertilizer is ground and sieved by a 100-mesh sieve, so that uniform organic fertilizer particles are obtained;
(3) putting the phosphogypsum particles obtained in the step (1) and the wormcast organic fertilizer particles obtained in the step (2) into a reaction kettle according to the mass ratio of 1:2, adding ultrapure water according to the solid-liquid ratio g: mL of 1:9,
(4) putting the reaction kettle in the step (3) into an oven, setting the temperature at 100 ℃, reacting for 10 hours, obtaining mixed slurry after hydrothermal reaction,
(5) and (4) centrifuging the mixed slurry obtained in the step (4) at the speed of 5000rpm for 5min, removing the supernatant, drying, grinding and sieving to obtain the hydrothermally synthesized phosphogypsum-wormcast organic fertilizer compound.
Example 3
A method for improving the stability of organic matters in organic fertilizers comprises the following specific steps:
(1) washing the fly ash with water until the pH value of washing liquor is not changed, drying, and grinding the fly ash through a 100-mesh sieve to obtain uniform particles;
(2) after the forest humus is air-dried, grinding and sieving the forest humus by a 100-mesh sieve to obtain uniform organic fertilizer particles;
(3) putting the fly ash particles obtained in the step (1) and the forest humus particles obtained in the step (2) into a reaction kettle according to the mass ratio of 1:1.5, and adding ultrapure water according to the solid-liquid ratio g: mL of 1: 10;
(4) putting the reaction kettle obtained in the step (3) into an oven, setting the temperature to be 200 ℃, reacting for 5.5 hours, and obtaining mixed slurry after hydrothermal reaction;
(5) and (4) centrifuging the mixed slurry obtained in the step (4) for 18min at the speed of 3000rpm, removing the supernatant, drying, grinding and sieving to obtain the hydro-thermally synthesized fly ash-forest humus soil compound.
Example 4
A method for improving the stability of organic matters in organic fertilizers comprises the following specific steps:
(1) washing the fly ash with water until the pH value of washing liquor is not changed, drying, and grinding the fly ash through a 100-mesh sieve to obtain uniform particles;
(2) after being air-dried, the wormcast organic fertilizer is ground and sieved by a 100-mesh sieve, so that uniform organic fertilizer particles are obtained;
(3) putting the fly ash particles in the step (1) and the wormcast organic fertilizer particles in the step (2) into a reaction kettle according to the mass ratio of 1:1, and adding ultrapure water according to the solid-liquid ratio g: mL of 1: 10;
(4) putting the reaction kettle in the step (3) into an oven, setting the temperature to be 150 ℃, reacting for 5 hours, and obtaining mixed slurry after hydrothermal reaction;
(5) and (4) centrifuging the mixed slurry obtained in the step (4) at 3500rpm for 20min, removing the supernatant, drying, grinding and sieving to obtain the hydro-thermally synthesized fly ash-wormcast organic fertilizer compound.
Comparative example 1
(1) Air-drying and grinding the forest humus soil, sieving the ground forest humus soil with a 100-mesh sieve, putting the ground forest humus soil into a reaction kettle, and adding ultrapure water according to the solid-liquid ratio g: mL of 1: 10;
(2) putting the reaction kettle in the step (1) into an oven, setting the temperature to be 150 ℃, reacting for 5 hours, and obtaining mixed slurry after hydrothermal reaction;
(3) and (3) centrifuging the mixed slurry obtained in the step (2) at a speed of 3500rpm for 20min, removing the supernatant, drying, grinding and sieving to obtain the hydrothermal forest humus soil.
Comparative example 2
(1) Air-drying and grinding the wormcast organic fertilizer, sieving the wormcast organic fertilizer with a 100-mesh sieve, putting the wormcast organic fertilizer into a reaction kettle, and adding ultrapure water according to the solid-liquid ratio g: mL of 1: 10;
(2) putting the reaction kettle in the step (1) into an oven, setting the temperature to be 150 ℃, reacting for 5 hours, and obtaining mixed slurry after hydrothermal reaction;
(3) and (3) centrifuging the mixed slurry obtained in the step (2) at 3500rpm for 20min, removing the supernatant, drying, grinding and sieving to obtain the wormcast organic fertilizer after hydrothermal treatment.
Weighing the products prepared in the examples and the comparative examples, original forest humus and original wormcast organic fertilizer respectively, wherein each sample contains 250mgC, adding 3mL of hydrogen peroxide with the mass fraction of 30%, putting the samples into a shaking table to perform oscillation reaction for 24h at the speed of 175rpm, taking the samples out, adding 3mL of hydrogen peroxide with the mass fraction of 30%, putting the samples into the shaking table to perform oscillation, repeating the operation for 7 days, taking the samples out after 7 days, cleaning the samples twice by using ultrapure water, centrifuging the samples for 10min at the speed of 3500rpm, removing supernate, performing freeze drying to obtain samples, measuring the element content and calculating the organic matter content loss, and the element content and the organic matter content loss before and after oxidation are shown in table 1.
TABLE 1
The results show that the stability of organic matters in the organic fertilizer is obviously improved after the industrial solid waste and the organic fertilizer are hydrothermally synthesized.
While the present invention has been described in detail with reference to the specific embodiments thereof, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (6)
1. A method for improving the stability of organic matters in organic fertilizers is characterized by comprising the following steps:
(1) washing industrial solid waste water, drying, grinding and sieving with a 100-mesh sieve to obtain uniform industrial solid waste particles;
(2) air-drying and grinding the organic fertilizer and sieving the ground organic fertilizer with a 100-mesh sieve to obtain uniform organic fertilizer particles;
(3) putting the industrial solid waste particles obtained in the step (1) and the organic fertilizer particles obtained in the step (2) into a reaction kettle according to the mass ratio of 1: 1-2, adding ultrapure water according to the solid-liquid ratio of 1: 8-10, carrying out hydrothermal reaction to obtain mixed slurry, centrifuging the mixed slurry to remove supernatant, drying, grinding and sieving to obtain the compound fertilizer, wherein the organic matter stability of the compound fertilizer is superior to that of the original organic fertilizer.
2. The method for improving the stability of organic matters in the organic fertilizer according to claim 1, wherein the industrial solid wastes in the step (1) comprise phosphogypsum and fly ash.
3. The method for improving the stability of organic matters in the organic fertilizer as claimed in claim 1, wherein the industrial solid waste is washed with water in step (1) until the pH value of the washing solution is not changed.
4. The method for improving the stability of organic matters in the organic fertilizer as claimed in claim 1, wherein the organic fertilizer in the step (2) comprises wormcast organic fertilizer and forest humus.
5. The method for improving the stability of organic matters in the organic fertilizer according to claim 1, wherein the hydrothermal reaction in the step (3) is carried out at 100-200 ℃ for 5-10 hours.
6. The method for improving the stability of organic matters in the organic fertilizer according to claim 1, wherein the centrifugation in the step (4) is performed at 3000-5000 rpm for 5-20 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514032.XA CN114031442B (en) | 2021-12-13 | 2021-12-13 | Method for improving stability of organic matters in organic fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514032.XA CN114031442B (en) | 2021-12-13 | 2021-12-13 | Method for improving stability of organic matters in organic fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114031442A true CN114031442A (en) | 2022-02-11 |
| CN114031442B CN114031442B (en) | 2023-04-11 |
Family
ID=80146688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111514032.XA Active CN114031442B (en) | 2021-12-13 | 2021-12-13 | Method for improving stability of organic matters in organic fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114031442B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166519A (en) * | 1996-05-01 | 1997-12-03 | 株式会社荏原制作所 | Method for changing organic waste into resources |
| CN104944732A (en) * | 2015-06-29 | 2015-09-30 | 同济大学 | Energy-saving recycling treatment disposal system and energy-saving recycling treatment disposal process for organic solid waste |
| CN106424077A (en) * | 2016-09-12 | 2017-02-22 | 中国科学院城市环境研究所 | Method for treating fly sh by sludge |
| CN106929034A (en) * | 2017-04-20 | 2017-07-07 | 中国科学院生态环境研究中心 | A kind of solid waste prepares the new technology of saline-alkali soil conditioner |
| CN106995350A (en) * | 2017-03-27 | 2017-08-01 | 深圳先进技术研究院 | The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer |
| CN107815315A (en) * | 2017-10-20 | 2018-03-20 | 福建省农业科学院农业生态研究所 | A kind of soil conditioner, its preparation method and application for improving saline-alkali soil |
| CN108456106A (en) * | 2018-03-06 | 2018-08-28 | 山东理工大学 | The preparation method of feces of livestock and poultry charcoal base microbe fertilizer |
| CN108558502A (en) * | 2018-04-23 | 2018-09-21 | 中国科学院生态环境研究中心 | A kind of abandoned biomass prepares the new process of carbon-base slow release composite fertilizer |
| CN109205971A (en) * | 2018-08-06 | 2019-01-15 | 北京开元信节能科技有限公司 | A kind of livestock and poultry feces integrated treatment and the device utilized |
| CN111282962A (en) * | 2020-03-02 | 2020-06-16 | 清华大学深圳国际研究生院 | Method for co-processing organic solid waste and kitchen waste |
| CN111499454A (en) * | 2020-04-20 | 2020-08-07 | 上海交通大学 | Method for converting domestic wet garbage into humic acid organic fertilizer with high added value by hydrothermal catalysis method |
| CN112851440A (en) * | 2019-11-12 | 2021-05-28 | 中国科学院过程工程研究所 | Preparation method of environment-friendly organic-inorganic compound fertilizer |
| CN113072287A (en) * | 2021-04-26 | 2021-07-06 | 南京师范大学 | Method for regulating generation of humic acid from sludge hydrothermal and passivating heavy metal |
-
2021
- 2021-12-13 CN CN202111514032.XA patent/CN114031442B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166519A (en) * | 1996-05-01 | 1997-12-03 | 株式会社荏原制作所 | Method for changing organic waste into resources |
| US6143176A (en) * | 1996-05-01 | 2000-11-07 | Ebara Corporation | Method of converting organic wastes to valuable resources |
| CN104944732A (en) * | 2015-06-29 | 2015-09-30 | 同济大学 | Energy-saving recycling treatment disposal system and energy-saving recycling treatment disposal process for organic solid waste |
| CN106424077A (en) * | 2016-09-12 | 2017-02-22 | 中国科学院城市环境研究所 | Method for treating fly sh by sludge |
| CN106995350A (en) * | 2017-03-27 | 2017-08-01 | 深圳先进技术研究院 | The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer |
| CN106929034A (en) * | 2017-04-20 | 2017-07-07 | 中国科学院生态环境研究中心 | A kind of solid waste prepares the new technology of saline-alkali soil conditioner |
| CN107815315A (en) * | 2017-10-20 | 2018-03-20 | 福建省农业科学院农业生态研究所 | A kind of soil conditioner, its preparation method and application for improving saline-alkali soil |
| CN108456106A (en) * | 2018-03-06 | 2018-08-28 | 山东理工大学 | The preparation method of feces of livestock and poultry charcoal base microbe fertilizer |
| CN108558502A (en) * | 2018-04-23 | 2018-09-21 | 中国科学院生态环境研究中心 | A kind of abandoned biomass prepares the new process of carbon-base slow release composite fertilizer |
| CN109205971A (en) * | 2018-08-06 | 2019-01-15 | 北京开元信节能科技有限公司 | A kind of livestock and poultry feces integrated treatment and the device utilized |
| CN112851440A (en) * | 2019-11-12 | 2021-05-28 | 中国科学院过程工程研究所 | Preparation method of environment-friendly organic-inorganic compound fertilizer |
| CN111282962A (en) * | 2020-03-02 | 2020-06-16 | 清华大学深圳国际研究生院 | Method for co-processing organic solid waste and kitchen waste |
| CN111499454A (en) * | 2020-04-20 | 2020-08-07 | 上海交通大学 | Method for converting domestic wet garbage into humic acid organic fertilizer with high added value by hydrothermal catalysis method |
| CN113072287A (en) * | 2021-04-26 | 2021-07-06 | 南京师范大学 | Method for regulating generation of humic acid from sludge hydrothermal and passivating heavy metal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114031442B (en) | 2023-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Singh et al. | Pyrolysis temperature influences the characteristics of rice straw and husk biochar and sorption/desorption behaviour of their biourea composite | |
| Suo et al. | Preparation and characterization of biochar derived from co-pyrolysis of Enteromorpha prolifera and corn straw and its potential as a soil amendment | |
| CN105419807A (en) | Curing agent for heavy metal and organic matter combined polluted soil, and preparation and application methods for curing agent | |
| CN105802637A (en) | Soil heavy metal passivator, preparation method thereof, and passivation method thereof on soil cadmium | |
| CN106904589A (en) | A kind of hydro-thermal method prepares method and the application of bagasse Carbon Materials | |
| CN104446845A (en) | Special fertilizer for walnut and preparation method of fertilizer | |
| Latifah et al. | Enhancing nitrogen availability, ammonium adsorption-desorption, and soil pH buffering capacity using composted paddy husk | |
| CN105837381A (en) | Biomass organic fertilizer for soil improvement | |
| CN112457853B (en) | Zinc-rich biochar, preparation method thereof and application of zinc-rich biochar in passivation and remediation of heavy metal contaminated soil | |
| CN104672470A (en) | Method for extracting humus from pig manure maize straw compost | |
| Wu et al. | Combustion ash addition promotes the production of K-enriched biochar and K release characteristics | |
| CN107325820B (en) | Soil remediation agent suitable for landscape ecosystem | |
| CN105948997A (en) | Biomass organic fertilizer capable of increasing PH of acid soil | |
| CN107935640B (en) | Additive for accelerating compost maturity of pig manure and preparation method and application thereof | |
| CN114031442B (en) | Method for improving stability of organic matters in organic fertilizer | |
| Joseph et al. | Designing specific biochars to address soil constraints: A developing industry | |
| CN102093122B (en) | Fertilizer and method for enhancing stability and fertilizer effect of ammonium bicarbonate | |
| CN115180786B (en) | Method for fixing sludge heavy metals by natural calcium-based biochar | |
| Venkatesh et al. | Operational process for biochar preparation from castor bean stalk and its characterization for soil application | |
| CN115448801A (en) | Coal-based solid waste humic acid mineral fertilizer and preparation method and application thereof | |
| Placek et al. | Methods for calculating carbon sequestration in degraded soil of zinc smelter and post-mining areas | |
| CN109622599A (en) | A method of arsenic pollution agricultural land soil is repaired using dewatered sludge and charcoal Mixed Surfactant System | |
| CN112872009A (en) | Method for restoring impoverished soil | |
| Villada et al. | Combining anaerobic digestion slurry and different biochars to develop a biochar-based slow-release NPK fertilizer | |
| CN115353639B (en) | Method for preparing potassium humate by using corn straw and application |
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 |