CN106995350A - The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer - Google Patents
The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer Download PDFInfo
- Publication number
- CN106995350A CN106995350A CN201710186154.8A CN201710186154A CN106995350A CN 106995350 A CN106995350 A CN 106995350A CN 201710186154 A CN201710186154 A CN 201710186154A CN 106995350 A CN106995350 A CN 106995350A
- Authority
- CN
- China
- Prior art keywords
- sludge
- phosphate fertilizer
- base charcoal
- sludge base
- slow
- 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.)
- Pending
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Materials Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Fertilizers (AREA)
Abstract
Conditioner is added the invention discloses the preparation method of sludge base charcoal slow-release phosphate fertilizer, including into sludge, is stirred, the sludge after being nursed one's health；Sludge after conditioning is put into hydrothermal reactor, sealed, heating carries out hydrothermal carbonization reaction, obtains hydrothermal carbonization liquid；Hydrothermal carbonization liquid is subjected to separation of solid and liquid, solid product is washed, and in 40~60 DEG C of dryings, obtains sludge base charcoal；Sludge base charcoal is placed in phosphorus solution, shaken with 100~200r/min after 16~48h, separation of solid and liquid is carried out, by solid product in 40~60 DEG C of dryings, sludge base charcoal slow-release phosphate fertilizer is obtained.Invention additionally discloses a kind of sludge base charcoal slow-release phosphate fertilizer.The preparation method of the sludge base charcoal slow-release phosphate fertilizer of the present invention, cost is relatively low, treatment effeciency is higher and solid productivity is higher；The charcoal slow-release phosphate fertilizer of the present invention, phosphate fertilizer slowly discharges, and effectively prevents pollution of the fertilizer to environment, can improved soil, keep soil from packing together.
Description
Technical field
It is slow more particularly, to a kind of sludge base charcoal the present invention relates to the regeneration treatment of sludge and recycling field
Release the preparation method and sludge base charcoal slow-release phosphate fertilizer of phosphate fertilizer.
Background technology
With the raising of Urbanization Progress and sewage treatment capacity, cities and towns excess sludge as sewage treatment plant accessory substance
It has been increasingly becoming a new problem that can not be ignored.According to statistics, in June, 2015 is ended, Guangdong Province builds together into sewage treatment facility
487, daily handling ability is up to 24,130,000 tons, and annual about 3,620,000 tons of sludge yield (moisture content 80%), the whole province still has nearly 50%
Sludge is still pending.Sludge is as the final product of sewage disposal process, and the current moisture content of most municipal sludges is still up to
80%, organic nutrient substance content is high, but contains substantial amounts of pathogen, odorant and noxious pollutant simultaneously, if not obtaining
Deal carefully with, there is the hidden danger for causing secondary pollution.
From soil science university of the world in 2006 since U.S. Philadelphia is held, using charcoal as main syllabus target biomass
Carbonization research is gradually risen.Charcoal is converted biomass into, and it is applied to agricultural or environment remediation, it is considered to be a kind of reliable
Carbon sequestration behavior.Compared with traditional fossil energy burning, the production process of charcoal itself reduces external carbon dioxide
Discharge, and when charcoal product is applied into farmland or other ecospheres, land output amount and depollution of environment energy can be effectively improved
Power, further promotes the effect of carbon fixation and emission reduction.
The method for preparing charcoal on sludge at present has the methods such as high temperature incineration method, pyrolysis method, microbe fermentation method.
But these current methods have shortcoming, for high temperature incineration method and pyrolysis method, raw material needs to be done in advance
Dry processing, but the current moisture content of most municipal sludge is still up to 80%, to reach a high temperature burning and thermal cracking process
Basic demand, then need to expend more energy and financial cost carry out the drying process of high intensity；For microbe fermentation method
For, process cycle is longer, so that process hardly possible control.That is, method energy consumption that current sludge prepares charcoal it is higher,
Process cycle is longer, so that cause cost higher, and process is difficult to control to.Slow-release fertilizer is prepared using sludge so as to further result in
When energy consumption is higher, process cycle is longer, so as to cause cost higher, and process is difficult to control to.
The content of the invention
Embodiment of the present invention is mainly solving the technical problems that provide a kind of preparation of sludge base charcoal slow-release phosphate fertilizer
Method and sludge base charcoal slow-release phosphate fertilizer, using the preparation side of the sludge base charcoal slow-release phosphate fertilizer of embodiment of the present invention
Method, is not limited by sludge raw aqueous rate, reduces energy consumption, shorten process cycle, so as to reach that cost is relatively low, handle
Efficiency is higher and solid productivity is higher；And using the sludge base charcoal slow-release phosphate fertilizer of the present invention, the nutrient of fertilizer by
Control, slow release, single fertilization disclosure satisfy that crop whole growth period to phosphate fertilizer needs, reduction fertilizer amount, effectively
Prevent pollution of the fertilizer to environment, can improved soil, keep soil from packing together.
In order to solve the above technical problems, the technical scheme that embodiment of the present invention is used is：A kind of sludge base is provided
The preparation method of charcoal slow-release phosphate fertilizer, comprises the following steps：
S1, conditioner is added into sludge, is stirred, the sludge after being nursed one's health；
S2, the sludge after the conditioning is put into hydrothermal reactor, and sealing, heating carries out hydrothermal carbonization reaction, obtains
Hydrothermal carbonization liquid；Wherein, reaction temperature is 150~300 DEG C, and the reaction time is that pressure is 2 in 30~150min, hydrothermal reactor
~10Mpa；
S3, carries out separation of solid and liquid by the hydrothermal carbonization liquid, solid product is washed, and in 40~60 DEG C of dryings,
Obtain sludge base charcoal；
S4, the sludge base charcoal is placed in phosphorus solution, is shaken with 100~200r/min after 16~48h, consolidate
Liquid is separated, by solid product in 40~60 DEG C of dryings, obtains sludge base charcoal slow-release phosphate fertilizer.
In wherein some embodiments, the conditioner is slag discarded object, KOH, CaO, CaCO3, Al2O3, ZnCl2
Etc. one or more mixing in inorganic conditioner.
In wherein some embodiments, the addition weight of the conditioner is the 0.5%- of the sludge dry solids weight
10%.
In wherein some embodiments, inert gas can also be passed through in step S2.
In wherein some embodiments, the inert gas is N2.
In wherein some embodiments, the mode of heating in step S2 is Microwave-assisted firing or electrical heating.
In wherein some embodiments, the concentration of the phosphorus solution is 50~500ppm, the sludge base charcoal with
The solid-to-liquid ratio of the phosphorus solution is 1g:1000mL~1g:200mL.
In wherein some embodiments, the phosphorus solution is potassium dihydrogen phosphate, calcium superphosphate, Diammonium phosphate (DAP), ground phosphate rock
One or more mixing in.
The present invention also provides the sludge that a kind of preparation method using the sludge base charcoal slow-release phosphate fertilizer is prepared
Base charcoal slow-release phosphate fertilizer, the sludge base charcoal slow-release phosphate fertilizer includes sludge base charcoal and is stored in the sludge base biology
Phosphate fertilizer in charcoal.
The beneficial effect of embodiment of the present invention is：The preparation method of the sludge base charcoal slow-release phosphate fertilizer of the present invention, no
Limited by sludge raw aqueous rate, after directly nursing one's health sludge, then carry out hydrothermal carbonization reaction, reduce energy consumption, contracted
Short process cycle so that using the preparation method of embodiment of the present invention prepare sludge base charcoal slow-release phosphate fertilizer into
This relatively low, treatment effeciency is higher and solid productivity is higher.And the sludge base charcoal slow-release phosphate fertilizer prepared using this method, make
For fertilizer slow release carrier so that the nutrient of the phosphate fertilizer in slow-release phosphate fertilizer is controlled, slow release, single fertilization disclosure satisfy that
Being needed to phosphate fertilizer for crop whole growth period, reduces fertilizer amount, effectively prevents pollution of the fertilizer to environment, being capable of conditioned soil
Earth, keep soil from packing together.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
In embodiment of the present invention, the sludge source is in municipal administration domestic sludge.It is appreciated that the sludge can also have
Other sources, such as pond sludge.
The preparation method of the sludge base charcoal slow-release phosphate fertilizer of embodiment of the present invention comprises the following steps：
S1：Conditioner is added into sludge, is stirred, the sludge after being nursed one's health.
Specifically, in embodiment of the present invention, the moisture content of the sludge is 50~85wt%, the addition of the conditioner
Weight is the 0.5%-10% of the sludge dry solids weight.The conditioner is slag discarded object, KOH, CaO, CaCO3、
Al2O3、ZnCl2Etc. one or more mixing in inorganic conditioner.In embodiment of the present invention, conditioning is added into sludge
Agent is nursed one's health, and can increase the porosity of sludge, and then make it that the reaction of sludge in subsequent step is more abundant, so as to
Obtain the sludge base charcoal of more high yield.
S2：Sludge after the conditioning is put into hydrothermal reactor, sealed, heating carries out hydrothermal carbonization reaction, obtains
Hydrothermal carbonization liquid；Wherein, reaction temperature is 150~300 DEG C, and the reaction time is that pressure is 1 in 30~150min, hydrothermal reactor
~10Mpa.
In this step, the mode of heating used for Microwave-assisted firing or electrical heating so that sludge after the conditioning by
Heat is more uniform, carries out hydrothermal carbonization and reacts more abundant, so as to obtain the sludge base charcoal of more high yield.
In this step, hydrothermal carbonization reaction also changes the form of the heavy metal in raw sewage simultaneously, the weight such as Cd, Pb
The form of metal, so as to reduce the content of beary metal of sludge base charcoal slow-release phosphate fertilizer.
It is understood that in embodiment of the present invention, in step S2 when carrying out hydrothermal carbonization reaction, can also be passed through
Inert gas, so that hydrothermal carbonization reaction is more abundant.The inert gas can be N2、CO2Deng inert gas, preferably N2, with
Making the content of the available nitrogen in the sludge base charcoal slow-release phosphate fertilizer subsequently obtained increases.
S3：The hydrothermal carbonization liquid is subjected to separation of solid and liquid, solid product is washed, and in 40~60 DEG C of dryings,
Obtain sludge base charcoal.
The hydrothermal carbonization liquid can carry out separation of solid and liquid using methods such as centrifugation, gravitational settling, filterings, and the present invention is implemented
In mode, the method that the hydrothermal carbonization liquid is preferred to use centrifugation carries out separation of solid and liquid.
S4：The sludge base charcoal is placed in phosphorus solution, shaken with 100~200r/min after 16~48h, consolidate
Liquid is separated, by solid product in 40~60 DEG C of dryings, obtains sludge base charcoal slow-release phosphate fertilizer.
In embodiment of the present invention, the concentration of the phosphorus solution is 50~500ppm (part per million is dense to be crossed), the sludge
The solid-to-liquid ratio of base charcoal and the phosphorus solution is 1g:1000mL~1g:200mL.
The phosphorus solution is one or more mixed in potassium dihydrogen phosphate, calcium superphosphate, Diammonium phosphate (DAP), ground phosphate rock etc.
Close.
Sludge base charcoal and phosphorus solution in this step can be consolidated using methods such as centrifugation, gravitational settling, filterings
Liquid is separated, in embodiment of the present invention, it is preferred to use the method for centrifugation carries out separation of solid and liquid.It is understood that this step
The remaining phosphorus solution that progress separation of solid and liquid is obtained in rapid, which can be reclaimed, to be continued on for preparing charcoal slow-release phosphate fertilizer, only need to be by residue
The concentration of phosphorus solution is adjusted to required dope.
The preparation method of the sludge base charcoal slow-release phosphate fertilizer of embodiment of the present invention, it is not necessary to which sludge is first dried
Processing, namely the preparation method of the sludge base charcoal slow-release phosphate fertilizer of embodiment of the present invention are not limited by sludge raw aqueous rate
System, after directly nursing one's health sludge, then carries out hydrothermal carbonization reaction, reduces energy consumption, shorten process cycle, so that
The cost for preparing sludge base charcoal slow-release phosphate fertilizer using the preparation method of embodiment of the present invention is relatively low, treatment effeciency is higher and
Solid productivity is higher.
Embodiment of the present invention also provides a kind of preparation method for using above-mentioned sludge base charcoal slow-release phosphate fertilizer and is prepared into
The sludge base charcoal slow-release phosphate fertilizer arrived, the sludge base charcoal slow-release phosphate fertilizer includes sludge base charcoal and is stored in the dirt
Phosphate fertilizer in mud base charcoal.
The sludge base charcoal slow-release phosphate fertilizer of embodiment of the present invention, due to being added on the basis of sludge base charcoal
Phosphate fertilizer, the sludge base charcoal is used as fertilizer slow release carrier so that the nutrient of phosphate fertilizer is controlled, slow release, disposably
Fertilising disclosure satisfy that crop whole growth period to phosphate fertilizer needs, reduction fertilizer amount effectively prevents pollution of the fertilizer to environment,
Can improved soil, keep soil from packing together.
The preparation method of the sludge base charcoal slow-release phosphate fertilizer of embodiment of the present invention is done with reference to specific embodiment
Further describe, but the implementation of the present invention is not limited to this.
Embodiment 1
S1：To moisture content to add slag in 85wt% domestic sludge, slag dosage is sludge dry solids weight
5.0%, stir, the sludge after being nursed one's health.
S2：Sludge after the conditioning is put into hydrothermal reactor, sealed, it is anti-that Microwave-assisted firing carries out hydrothermal carbonization
Should, wherein, microwave power is 400W, and reaction temperature control is 200 DEG C, and the reaction time is that pressure is in 90min, hydrothermal reactor
2.4Mpa, obtains hydrothermal carbonization liquid.
S3：The hydrothermal carbonization liquid is subjected to separation of solid and liquid with 3500r/min centrifugations, by isolated solid product water
Wash 3 times, in oven drying at 50 DEG C, obtain sludge base charcoal.
S4：The sludge base charcoal is placed in the potassium dihydrogen phosphate that concentration is 200ppm, the sludge base life
The solid-to-liquid ratio of thing charcoal and the phosphorus solution is 1g:500mL, after 150r/min concussions 24h, centrifugation progress separation of solid and liquid, and in
Oven drying at 50 DEG C, obtains sludge base charcoal slow-release phosphate fertilizer.
The sludge base charcoal slow-release phosphate fertilizer prepared in the present embodiment is measured, the sludge base charcoal slow-release fertilizer
The content of middle available phosphorus is 19.51g/kg, and the content of available nitrogen is 1.80g/kg；To in the sludge base charcoal slow-release phosphate fertilizer
The content of heavy metal is measured, and the content in Cd, Pb leaching liquor reduces 98.67%, 93.13% respectively compared with raw sewage.
Embodiment 2
S1：Added into the domestic sludge that moisture content is 85wt% with 1：The Al of 1 part by weight mixing2O3And ZnCl2It is mixed
Conditioner is closed, mixing conditioner dosage is the 7.5% of sludge dry solids weight, is stirred, the sludge after being nursed one's health.
S2：Sludge after the conditioning is put into hydrothermal reactor, seals, is passed through N2, wherein, reaction temperature control is
250 DEG C, the reaction time is that pressure is about 5.0Mpa in 150min, hydrothermal reactor, obtains hydrothermal carbonization liquid.
S3：The hydrothermal carbonization liquid is subjected to separation of solid and liquid with 3500r/min centrifugations, by isolated solid product water
Wash 3 times, in oven drying at 50 DEG C, obtain sludge base charcoal.
S4：The sludge base charcoal is placed in the Diammonium phosphate (DAP) solution that concentration is 500ppm, the sludge base is biological
The solid-to-liquid ratio of charcoal and the phosphorus solution is 1g:200mL, after 150r/min concussions 48h, centrifugation carries out separation of solid and liquid, and in 50
Oven drying at DEG C, obtains sludge base charcoal slow-release phosphate fertilizer.
The sludge base charcoal slow-release phosphate fertilizer prepared in the present embodiment is measured, the sludge base charcoal slow-release fertilizer
The content of middle available phosphorus is 21.23g/kg, and the content of available nitrogen is 10.96g/kg；To the sludge base charcoal slow-release phosphate fertilizer
The content of middle heavy metal is measured, and the content in Cd, Pb leaching liquor reduces 95.81% respectively compared with raw sewage,
94.09%.
Embodiment 3
S1：To moisture content to add CaO in 80wt% domestic sludge, CaO dosages are sludge dry solids weight
2.5%, stir, the sludge after being nursed one's health.
S2：Sludge after the conditioning is put into hydrothermal reactor, seals, is passed through N2, wherein, reaction temperature control is
150 DEG C, the reaction time is that pressure is about 1.0Mpa in 90min, hydrothermal reactor, obtains hydrothermal carbonization liquid.
S3：The hydrothermal carbonization liquid is subjected to separation of solid and liquid with 3500r/min centrifugations, by isolated solid product water
Wash 3 times, in oven drying at 50 DEG C, obtain sludge base charcoal.
S4：The sludge base charcoal is placed in the calcium superphosphate solution that concentration is 100ppm, the sludge base is biological
The solid-to-liquid ratio of charcoal and the phosphorus solution is 1g:1000mL, after 150r/min concussions 48h, centrifugation carries out separation of solid and liquid, and in 50
Oven drying at DEG C, obtains sludge base charcoal slow-release phosphate fertilizer.
The sludge base charcoal slow-release phosphate fertilizer prepared in the present embodiment is measured, the sludge base charcoal slow-release fertilizer
The content of middle available phosphorus is 11.23g/kg, and the content of available nitrogen is 1.63g/kg；To in the sludge base charcoal slow-release phosphate fertilizer
The content of heavy metal is measured, and the content in Cd, Pb leaching liquor reduces 91.53%, 89.15% respectively compared with raw sewage.
Comparative example
The sludge base biology prepared for the sludge base charcoal slow-release phosphate fertilizer verified using embodiment of the present invention
The effect of charcoal slow-release phosphate fertilizer, is tested using pot-culture method, plants tomato seedling, is delayed with the sludge base charcoal for adding embodiment 1
Release phosphate fertilizer group, addition sludge group, addition straw charcoal group and blank group and carry out contrast experiment, wherein every group of addition is 50g/
Basin.
Above-mentioned four groups of tomato seedlings are after the growth by same time, because soil is handled differently, show substantially
Growth differences.Using the growth conditions of the tomato seedling of blank group as criterion, wherein, add the plant of the tomato seedling of sludge group
It is substantially short and small, illustrate that the soil for adding sludge is not appropriate for plant growth；The plant for adding the tomato seedling of straw charcoal group is also more empty
The plant organized in vain is slightly smaller；And the plant for adding the tomato seedling of the sludge base charcoal slow-release phosphate fertilizer group of embodiment 1 substantially compares blank
Group is tall and big, luxuriant, illustrates that sludge base charcoal slow-release phosphate fertilizer serves good improving effect to soil.
And by determining, the soil of the sludge base charcoal slow-release phosphate fertilizer group of embodiment 1 is added, plant one in tomato seedling
Before and after individual growth cycle, the content of available phosphorus, available nitrogen in soil is basically unchanged, and may indicate that sludge base charcoal is sustained phosphorus
The nutrient of fertilizer is controlled, and slow release, utilization rate is high.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
Equivalent structure or equivalent flow conversion that description of the invention content is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (9)
1. a kind of preparation method of sludge base charcoal slow-release phosphate fertilizer, it is characterised in that comprise the following steps：
S1, conditioner is added into sludge, is stirred, the sludge after being nursed one's health；
S2, the sludge after the conditioning is put into hydrothermal reactor, and sealing, heating carries out hydrothermal carbonization reaction, obtains hydro-thermal
Carbodiimide solution；Wherein, reaction temperature is 150~300 DEG C, and the reaction time is 30~150min, in hydrothermal reactor pressure be 2~
10Mpa；
S3, carries out separation of solid and liquid by the hydrothermal carbonization liquid, solid product is washed, and in 40~60 DEG C of dryings, obtains
Sludge base charcoal；
S4, the sludge base charcoal is placed in phosphorus solution, is shaken with 100~200r/min after 16~48h, carries out solid-liquid point
From by solid product in 40~60 DEG C of dryings, acquisition sludge base charcoal slow-release phosphate fertilizer.
2. the preparation method of sludge base charcoal slow-release phosphate fertilizer according to claim 1, it is characterised in that the conditioner
For slag discarded object, KOH, CaO, CaCO3、Al2O3、ZnCl2Etc. one or more mixing in inorganic conditioner.
3. the preparation method of sludge base charcoal slow-release phosphate fertilizer according to claim 1, it is characterised in that the conditioner
Addition weight be the sludge dry solids weight 0.5%-10%.
4. the preparation method of sludge base charcoal slow-release phosphate fertilizer according to claim 1, it is characterised in that in step S2 also
Inert gas can be passed through.
5. the preparation method of sludge base charcoal slow-release phosphate fertilizer according to claim 4, it is characterised in that the indifferent gas
Body is N2。
6. the preparation method of sludge base charcoal slow-release phosphate fertilizer according to claim 1, it is characterised in that in step S2
Mode of heating is Microwave-assisted firing or electrical heating.
7. the preparation method of sludge base charcoal slow-release phosphate fertilizer according to claim 1, it is characterised in that the phosphorus solution
Concentration be 50~500ppm, the solid-to-liquid ratio of the sludge base charcoal and the phosphorus solution is 1g:1000mL~1g:200mL.
8. the preparation method of sludge base charcoal slow-release phosphate fertilizer according to claim 1, it is characterised in that the phosphorus solution
For one or more mixing in potassium dihydrogen phosphate, calcium superphosphate, Diammonium phosphate (DAP), ground phosphate rock etc..
9. a kind of preparation method of the sludge base charcoal slow-release phosphate fertilizer any one of use claim 1 to 8 is prepared into
The sludge base charcoal slow-release phosphate fertilizer arrived, it is characterised in that the sludge base charcoal slow-release phosphate fertilizer includes sludge base charcoal
With the phosphate fertilizer being stored in the sludge base charcoal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710186154.8A CN106995350A (en) | 2017-03-27 | 2017-03-27 | The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710186154.8A CN106995350A (en) | 2017-03-27 | 2017-03-27 | The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106995350A true CN106995350A (en) | 2017-08-01 |
Family
ID=59431842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710186154.8A Pending CN106995350A (en) | 2017-03-27 | 2017-03-27 | The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106995350A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235759A (en) * | 2017-06-05 | 2017-10-10 | 上海大学 | Charcoal phosphorus composite fertilizer and the method that charcoal phosphorus composite fertilizer is prepared using sludge |
| CN107857245A (en) * | 2017-11-01 | 2018-03-30 | 上海大学 | The preparation method of high bioavilability phosphorus containing sludge base Carbon Materials |
| CN110157447A (en) * | 2019-05-22 | 2019-08-23 | 辽宁工程技术大学 | A kind of dust storm soil conditioner and preparation method thereof and application method |
| CN110171996A (en) * | 2019-04-23 | 2019-08-27 | 东莞理工学院 | A kind of composite organic-inorganic fertilizer and preparation method thereof using activated sludge preparation |
| CN110255845A (en) * | 2019-07-09 | 2019-09-20 | 中国科学院城市环境研究所 | A kind of resource utilization method of pyrolyzing sludge charcoal |
| CN110423160A (en) * | 2019-09-02 | 2019-11-08 | 南开大学 | It is a kind of using cornstalk biological charcoal as the slow-release phosphate fertilizer preparation method of carrier |
| CN110540479A (en) * | 2019-09-19 | 2019-12-06 | 东北农业大学 | sludge recycling treatment method |
| CN111303900A (en) * | 2020-03-25 | 2020-06-19 | 广东省农业科学院农业资源与环境研究所 | Modified charcoal-based soil conditioner for repairing Cd pollution and preparation method and application thereof |
| CN111994908A (en) * | 2020-08-11 | 2020-11-27 | 福建省热带作物科学研究所 | Preparation method of biomass charcoal for reducing nitrogen and phosphorus in soil |
| CN112062119A (en) * | 2020-09-16 | 2020-12-11 | 沈阳航空航天大学 | Method for preparing phosphorus-rich biochar from municipal sludge |
| CN113185353A (en) * | 2021-04-30 | 2021-07-30 | 河南大学 | Double-effect alkali modified charcoal-based vermiculite compound fertilizer for repairing soil heavy metal pollution and regulating fertility and preparation method thereof |
| CN113277690A (en) * | 2021-05-12 | 2021-08-20 | 华中科技大学 | Method and product for comprehensive treatment of sludge and recovery of phosphorus resources |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
| CN114031442A (en) * | 2021-12-13 | 2022-02-11 | 昆明理工大学 | Method for improving stability of organic matters in organic fertilizer |
| CN116903410A (en) * | 2023-07-25 | 2023-10-20 | 上海园林绿化建设有限公司 | Preparation method and application of sludge hydro-thermal carbon compound fertilizer for improving coastal saline-alkali soil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775236A (en) * | 2012-08-17 | 2012-11-14 | 中国科学院广州能源研究所 | Agricultural and forestry waste carbon-based slow release filter and preparation method thereof |
| CN104150743A (en) * | 2014-07-22 | 2014-11-19 | 广州中国科学院先进技术研究所 | Method for preparing sludge carbon by virtue of microwave-assisted hydrothermal carbonization |
| CN105255506A (en) * | 2015-09-10 | 2016-01-20 | 广州中国科学院先进技术研究所 | Method for preparing sludge char through hydrothermal carbonization reinforced by conditioners |
-
2017
- 2017-03-27 CN CN201710186154.8A patent/CN106995350A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775236A (en) * | 2012-08-17 | 2012-11-14 | 中国科学院广州能源研究所 | Agricultural and forestry waste carbon-based slow release filter and preparation method thereof |
| CN104150743A (en) * | 2014-07-22 | 2014-11-19 | 广州中国科学院先进技术研究所 | Method for preparing sludge carbon by virtue of microwave-assisted hydrothermal carbonization |
| CN105255506A (en) * | 2015-09-10 | 2016-01-20 | 广州中国科学院先进技术研究所 | Method for preparing sludge char through hydrothermal carbonization reinforced by conditioners |
Non-Patent Citations (2)
| Title |
|---|
| 许文，等: "限氧热处理对污泥重金属含量和浸出的影响", 《2015年中国环境科学学会学术年会论文集 》 * |
| 赵丹，等: "水热碳化与干法碳化对剩余污泥的处理比较", 《环境科学与技术》 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235759A (en) * | 2017-06-05 | 2017-10-10 | 上海大学 | Charcoal phosphorus composite fertilizer and the method that charcoal phosphorus composite fertilizer is prepared using sludge |
| CN107857245A (en) * | 2017-11-01 | 2018-03-30 | 上海大学 | The preparation method of high bioavilability phosphorus containing sludge base Carbon Materials |
| CN110171996A (en) * | 2019-04-23 | 2019-08-27 | 东莞理工学院 | A kind of composite organic-inorganic fertilizer and preparation method thereof using activated sludge preparation |
| CN110157447A (en) * | 2019-05-22 | 2019-08-23 | 辽宁工程技术大学 | A kind of dust storm soil conditioner and preparation method thereof and application method |
| US11124461B2 (en) | 2019-07-04 | 2021-09-21 | Incitec Pivot Limited | Fertilizer |
| US11691929B2 (en) | 2019-07-04 | 2023-07-04 | Incitec Fertilizers Pty Limited | Fertiliser |
| CN110255845A (en) * | 2019-07-09 | 2019-09-20 | 中国科学院城市环境研究所 | A kind of resource utilization method of pyrolyzing sludge charcoal |
| CN110423160A (en) * | 2019-09-02 | 2019-11-08 | 南开大学 | It is a kind of using cornstalk biological charcoal as the slow-release phosphate fertilizer preparation method of carrier |
| CN110540479A (en) * | 2019-09-19 | 2019-12-06 | 东北农业大学 | sludge recycling treatment method |
| CN110540479B (en) * | 2019-09-19 | 2022-05-31 | 东北农业大学 | Sludge recycling treatment method |
| CN111303900A (en) * | 2020-03-25 | 2020-06-19 | 广东省农业科学院农业资源与环境研究所 | Modified charcoal-based soil conditioner for repairing Cd pollution and preparation method and application thereof |
| CN111994908A (en) * | 2020-08-11 | 2020-11-27 | 福建省热带作物科学研究所 | Preparation method of biomass charcoal for reducing nitrogen and phosphorus in soil |
| CN111994908B (en) * | 2020-08-11 | 2022-08-09 | 福建省热带作物科学研究所 | Preparation method of biomass charcoal for reducing nitrogen and phosphorus in soil |
| CN112062119A (en) * | 2020-09-16 | 2020-12-11 | 沈阳航空航天大学 | Method for preparing phosphorus-rich biochar from municipal sludge |
| CN113185353A (en) * | 2021-04-30 | 2021-07-30 | 河南大学 | Double-effect alkali modified charcoal-based vermiculite compound fertilizer for repairing soil heavy metal pollution and regulating fertility and preparation method thereof |
| CN113277690A (en) * | 2021-05-12 | 2021-08-20 | 华中科技大学 | Method and product for comprehensive treatment of sludge and recovery of phosphorus resources |
| CN114031442A (en) * | 2021-12-13 | 2022-02-11 | 昆明理工大学 | Method for improving stability of organic matters in organic fertilizer |
| CN116903410A (en) * | 2023-07-25 | 2023-10-20 | 上海园林绿化建设有限公司 | Preparation method and application of sludge hydro-thermal carbon compound fertilizer for improving coastal saline-alkali soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106995350A (en) | The preparation method and sludge base charcoal slow-release phosphate fertilizer of sludge base charcoal slow-release phosphate fertilizer | |
| CN101746941B (en) | Biological drying method for treating dewatered sludge of urban sewage plant | |
| CN101983952B (en) | Method for producing organic fertilizer by using municipal sewage sludge | |
| CN101935139B (en) | Method for producing mash gas from municipal sludge through dry method anaerobic fermentation | |
| CN1209324C (en) | Method of producing composite organic fertilizer using city sludge | |
| CN101913924B (en) | Method for producing functional ecological compound organic fertilizer by using municipal sludge | |
| CN104861987A (en) | Soil improvement conditioner as well as preparation method and application thereof | |
| CN104803773A (en) | Traditional Chinese medicine residue biomass charcoal compound fertilizer and preparation method thereof | |
| CN109592659A (en) | A kind of method of municipal sludge hydrothermal carbonization recycling phosphorus | |
| CN103755400A (en) | Method for preparing mineral organic fertilizer by using surplus sludge in municipal sewage plants | |
| CN112457853B (en) | Zinc-rich biochar, preparation method thereof and application of zinc-rich biochar in passivation and remediation of heavy metal contaminated soil | |
| CN105060669A (en) | Sludge comprehensive utilization method by anaerobic fermentation-carbonization combination technique | |
| CN103641593B (en) | Method for preparing garden media from biogas slurry | |
| CN107098329A (en) | A kind of preparation method and applications of biological carbon | |
| CN104893740A (en) | Soil conditioner as well as preparation method and application of soil conditioner | |
| CN106753387B (en) | Phosphorus-rich biomass charcoal for inhibiting crops from absorbing lead and cadmium and preparation method thereof | |
| CN111592420A (en) | Method for preparing composite carbon-based fertilizer from biogas slurry and biogas residues and application | |
| CN1281558C (en) | Method for producing fermented potash fertilizer by bacterium enzymatic treatment of potassium-containing rock and preparing organic-inorganic compound mixed fertilizers | |
| CN109530414A (en) | A method of utilizing compost humic acid repairing heavy metal in soil | |
| Yu et al. | Influences of hydrothermal carbonization on phosphorus availability of swine manure-derived hydrochar: Insights into reaction time and temperature | |
| CN107032860A (en) | A kind of method for preparing auxotype charcoal base mineralization activity soil conditioner | |
| CN104893741A (en) | Soil conditioner as well as preparation method and application of soil conditioner | |
| CN105176965A (en) | Preparation method for bactericide and granulous compound soil conditioner prepared from bactericide | |
| CN109618866A (en) | A method of utilizing phosphatization sludge Nutrition Soil | |
| CN109134003A (en) | A kind of processing technology using municipal sludge production cream fertilizer base fluid |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170801 |
|
| RJ01 | Rejection of invention patent application after publication |