CN107252676A - A kind of preparation method of sludge, kitchen garbage charcoal soil heavy metal passivant - Google Patents
A kind of preparation method of sludge, kitchen garbage charcoal soil heavy metal passivant Download PDFInfo
- Publication number
- CN107252676A CN107252676A CN201710640108.0A CN201710640108A CN107252676A CN 107252676 A CN107252676 A CN 107252676A CN 201710640108 A CN201710640108 A CN 201710640108A CN 107252676 A CN107252676 A CN 107252676A
- Authority
- CN
- China
- Prior art keywords
- sludge
- heavy metal
- kitchen garbage
- charcoal
- preparation
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
Abstract
The present invention relates to the preparation method of sludge, kitchen garbage charcoal soil heavy metal passivant, the discharge and inappropriate disposal of the pollutants such as substantial amounts of Industrial " three Waste ", domestic waste can effectively be solved, so that heavy metal is in soil the problem of constantly cumulative rises, its solve technical scheme be, raw material include sludge and kitchen garbage, described sludge refers to sludge from wastewater treatment plant or water bottom Dredged Sludge, is used after dehydration；Described kitchen garbage, is shell, pomace, pericarp, one or more of mixing of vegetables；Charcoal heavy metal prepared by the inventive method has very strong adsorption capacity, the heavy metal in soil can be prevented to be migrated to underground water, prevent and treat underground water pollution, simultaneously, carbon source is provided for heterotroph microorganism in soil, be conducive to absorption of the plant to moisture and soil nutrient, improve the flux of oxygen in topsoil, be the innovation in charcoal preparation method.
Description
Technical field
The present invention relates to soil passivator preparing technical field, particularly a kind of sludge, kitchen garbage charcoal soil weight
The preparation method of matal deactivator.
Background technology
With developing rapidly for modern industrial or agricultural, the discharge of the pollutant such as substantial amounts of Industrial " three Waste ", domestic waste
With inappropriate disposal so that heavy metal constantly cumulative rises in soil, the excessive of agricultural chemicals and chemical fertilizer containing heavy metal makes
With the degree for also having aggravated heavy metal pollution of soil, people, animal are constituted and seriously endangered.
The sludge quantity that wastewater treatment in China factory produces daily can also be produced in 30,000,000 tons or so, black and odorous water governance process
Raw substantial amounts of sludge, because the reason for its moisture content is high, content of beary metal is high, its safe disposal is a huge problem.But it is dirty
The content of organic matter is up to more than 40% in mud, while the nutriment such as N P and K needed for being also rich in plant growth, exactly native
Required for earth.
Meanwhile, under the main trend of refuse classification, by Waste sorting recycle, using and disposal can effectively reduce rubbish
Total amount, reduces garbage disposal cost.In family's domestic refuse, kitchen garbage is a critically important part, containing abundant
Organic matter, can be used as fertilizer improved soil.
Charcoal is the product that biomass is pyrolyzed under the high temperature conditions, the Stable Carbon with loose structure, particular functional group
Most pollutants are had stronger adsorption capacity by source.After the reasonable processing to sludge and kitchen garbage, blending prepares biological
Charcoal is used as soil conditioner, can effectively reduce specific resistance to filtration cost, reduces domestic rubbish disposal amount, improvement
Soil environment quality, obtains huge economy, environmental and social benefits.
On the existing more Patents of soil heavy metal passivant, but current widespread adoption is few, especially
That is applied in agricultural land soil is less.
The patent for being mixed with charcoal on kitchen garbage and sludge only has two, and CN201611190634.3 is disclosed
A kind of preparation method for the sludge base charcoal for mixing kitchen garbage, but method is excessively cumbersome, is related to pickling and deionization
Water washing etc., is not suitable for large-scale application；CN201610460139.3 discloses the processing method of a kind of sludge and kitchen garbage,
Emphasis is not prepared to charcoal and stated in detail, not possessing to grasp in the Combined Treatment thinking of sludge and the rubbish of kitchen
The property made.Therefore, the problem of improvement and innovation in the preparation method of charcoal soil heavy metal passivant are current urgent need to resolve.
The content of the invention
For above-mentioned situation, to solve the defect of prior art, the purpose of the present invention is just to provide a kind of sludge, kitchen rubbish
The preparation method of rubbish charcoal soil heavy metal passivant, can effectively solve substantial amounts of Industrial " three Waste ", domestic waste etc.
The discharge of pollutant and inappropriate disposal so that heavy metal is in soil the problem of constantly cumulative rises.
The technical scheme that the present invention is solved is that raw material include sludge and kitchen garbage, and described sludge refers to municipal sewage
Treatment plant's sludge or water bottom Dredged Sludge, are used after dehydration；Described kitchen garbage, is shell, pomace, pericarp, vegetable
One or more of mixing of dish；The dry fruit shell such as peanut shell, walnut shell, melon seed cases, bagasse, corncob or banana
The rubbish rich in pricker cellulose or organic matter such as skin, watermelon peel, vegetable waste.
Charcoal heavy metal prepared by the inventive method has very strong adsorption capacity, can prevent the heavy metal in soil
Migrated to underground water, prevent and treat underground water pollution, meanwhile, carbon source is provided for heterotroph microorganism in soil, is conducive to plant to water
Divide the absorption with soil nutrient, improve the flux of oxygen in topsoil, be the innovation in charcoal preparation method.
Brief description of the drawings
Fig. 1 is sludge of the invention, kitchen garbage charcoal preparation flow figure.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
Provided by Fig. 1, the present invention comprises the following steps：
1) sludge from wastewater treatment plant or water body Dredged Sludge add eluent after dewater treatment, per 1kg sludge
Middle eluent consumption is 1-3L, and elution removes part heavy metal；Described elution agent concentration is between 0.01-0.30mol/L
Mixing more than one or both of citric acid, oxalic acid, humic acid, ethylenediamine tetra-acetic acid, liquor ferri trichloridi；
2) by kitchen garbage breaking, described kitchen garbage is shell, pomace, pericarp, vegetables it is one or more of mixed
Close；
3) by the sludge after processing and kitchen garbage according to 10-15：1 ratio is blended, and obtains mixture；
4) by mixture natural air drying, or drying machine is dried, and moisture content is down to less than 10%；
5) by step 4) dried material disintegrating, 100 mesh sieves are crossed, are placed in pyrolysis installation, under anoxic condition, heating
To 500-700 DEG C, 3-4h is fired, Muffle furnace Temperature fall is allowed to 25-27 DEG C, you can obtain sludge organism charcoal.
In order to ensure obtained sludge organism charcoal effect, described sludge dewatering treatment is at agent-feeding treatment or mechanical dehydration
Reason, moisture content is less than 80%.
Described eluent be 0.05-0.3mol/L oxalic acid solutions, 0.01-0.005mol/L edta solutions,
In 0.05-0.2mol/L liquor ferri trichloridis, 0.01-0.1mol/L humic acid solutions, 0.01-0.1mol/L citric acid solutions
One or more of combinations；Main purpose is the heavy metal in activation or chelating sludge, makes heavy metal no longer close with sludge
With reference to.
Described kitchen garbage be peanut shell, melon seed cases, corncob, bagasse, pericarp, vegetable waste rich in cellulose or
The rubbish of organic matter.
Described pyrolysis installation is Muffle furnace or pyrolysis reactor or domestic garbage pyrolysis stove.
Embodiment 1
1) sludge from wastewater treatment plant or water body Dredged Sludge are after dewater treatment, and addition 0.06mol/L oxalic acid is molten
Eluent consumption is 2L in liquid, 0.08mol/L humic acid solutions, every 1kg sludge, and elution removes part heavy metal；
2) peanut shell, melon seed cases, corncob, bagasse are crushed, is crushed to particle diameter less than 2cm, described kitchen garbage
For dry fruit shell or pericarp vegetables；
3) by the sludge after plate and frame filter press press filtration and kitchen garbage according to 10-15：1 mass ratio is blended, and obtains mixture；
4) by mixture natural air drying, moisture content is made below 10%；
5) by step 4) dried material disintegrating, 100 mesh sieves are crossed, are placed in pyrolysis installation, under anoxic condition, heating
To 500-700 DEG C, fire after 4h, allow Muffle furnace Temperature fall to 25 DEG C, you can obtain sludge organism charcoal.
Embodiment 2
1) sludge from wastewater treatment plant is after sludge dewatering equipment dewater treatment, addition 0.09mol/L citric acid solutions,
Eluent consumption is 3L in 0.03mol/L edta solutions, 0.013mol/L liquor ferri trichloridis, every 1kg sludge, is drenched
Wash away except part heavy metal；
2) corncob, bagasse, pericarp, vegetable waste are crushed, is crushed to particle diameter less than 2cm；
3) by the sludge after plate and frame filter press press filtration and kitchen garbage according to 10-15：1 mass ratio is blended, and obtains mixture；
4) mixture is placed in 400 DEG C of dryings in drying machine, makes moisture content below 10%；
5) by step 4) dried material disintegrating, 100 mesh sieves are crossed, are placed in pyrolysis installation, under anoxic condition, heating
To 500-700 DEG C, fire after 4h, allow Muffle furnace Temperature fall to 25 DEG C, you can obtain sludge organism charcoal.
Sludge of the present invention, the preparation flow of kitchen garbage charcoal are as shown in figure 1, sludge from wastewater treatment plant or water body
Dredged Sludge adds eluent A elution and removes most of heavy metal in sludge, through plate and frame filter press press filtration after dewater treatment
Sludge afterwards with it is broken after kitchen garbage mix and mix in proportion, plate compression purpose is, eluent is lived by press filtration
Change or the heavy metal of chelating is got rid of from sludge, mixture drying to moisture content is then high at 500-700 DEG C less than 10%
It is pyrolyzed 4 hours under the conditions of temperature, finally obtains the sludge baked, kitchen garbage charcoal.
In order to study the adsorption effect of sludge, kitchen garbage charcoal to cadmium, copper, lead, zinc heavy metal in soil, enter respectively
Four groups of experiments of row, every group of experiment includes blank sample totally 8 samples, and each sample does two groups of Duplicate Samples, totally 96 samples.Experiment soil
The initial content containing heavy metal is 50mg in earth, sludge is added in setting, the concentration gradients of kitchen garbage charcoal are 0,
0.2、0.4、0.6、0.8.Point mix two ways in the bottom of pipe and with soil and be added in plastic tube.
First, sludge of the present invention, kitchen garbage charcoal are placed into plastics bottom of the tube
Plastics bottom of the tube place sludge, kitchen garbage charcoal, precise 0,0.2,0.3,0.4,0.5,0.6,0.8,
1.0g sludge, kitchen garbage charcoal, are placed in the bottom of plastic tube, and the experiment for adding 50g in plastic tube on this basis is used
Soil.The plastic tube for being loaded into soil is placed on funnel stand, and 50mL pure water is added in each device, filtering is stood, under detection filtering
The remaining content of heavy metal in the liquid come, calculating obtains passivation efficiency.As a result it is as follows：
The bottom of table 1 adds the passivation effect of sludge, kitchen garbage charcoal to heavy metal in soil
2nd, sludge organism charcoal of the present invention is mixed with soil
Precise 0,0.2,0.3,0.4,0.5,0.6,0.8,1.0g sludge organism charcoals, it is fully mixed with soil with 50g experiments
Close uniform, the plastic tube for being loaded into soil is placed on funnel stand, 50mL pure water is added in each device, stand filtering, detected
The remaining content of heavy metal in the liquid filtered, calculating obtains passivation efficiency.As a result it is as follows：
The mixing of table 2 adds passivation effect of the sludge-kitchen garbage charcoal to lead in soil
Test and show more than, either bottom of the tube is added, or sludge organism charcoal is mixed with soil, sludge, kitchen
Rubbish biological charcoal all has preferably absorption passivation effect to the heavy metal copper in soil, zinc, cadmium, lead, in actual production, examines
Consider arable land actual conditions, the condition that the mode for adding sludge organism charcoal in soil bottom is implemented is limited, wasting manpower and material resources,
So suggestion is added using sludge, kitchen garbage charcoal and the well-mixed mode of soil.
50g experiment soil in, under conditions of minimum dosage 0.2g, absorption passivation efficiency be can reach 70% with
On, average adsorption amount has reached 184.4-212.5mg/g.The increase of sludge, kitchen garbage charcoal usage amount, heavy metal adsorption
Passivation effect is constantly strengthened, but average adsorption amount drops to 58.8-60.2mg/g.According to result of the test, it is proposed that according to soil
Heavy metal pollution situation is different, and sludge, the actual dosage of kitchen garbage charcoal are in 10-40 tons/hectare.
Advantages of the present invention is embodied in the following aspects, and first, charcoal heavy metal has very strong adsorption capacity, can
To prevent the heavy metal in soil from being migrated to underground water, underground water pollution is prevented and treated, meanwhile, the addition of kitchen garbage adds biology
The charcoal content of organic matter, can make SOIL CARBON AND NITROGEN than increase, carbon source is provided for heterotroph microorganism in soil, enrich the biology of soil
Diversity, second, charcoal also has preferably report water fertilizer conservation performance, is conducive to absorption of the plant to moisture and soil nutrient；
3rd, the flux for adding the crumb structure for being conducive to improved soil, improving oxygen in topsoil of charcoal；4th, this hair
The bright innovation belonged in terms of waste collaboration is handled with recycling, it implements that huge environmental effect and society's effect will be produced
Benefit.
Claims (7)
1. the preparation method of a kind of sludge, kitchen garbage charcoal soil heavy metal passivant, it is characterised in that including following step
Suddenly：
1）Sludge from wastewater treatment plant or water body Dredged Sludge are added and drenched in eluent, every 1kg sludge after dewater treatment
Lotion consumption is 1-3L, and elution removes part heavy metal, and described elution agent concentration is lemon between 0.01-0.30mol/L
Mixing more than one or both of acid, oxalic acid, humic acid, ethylenediamine tetra-acetic acid, liquor ferri trichloridi；
2）By kitchen garbage breaking, described kitchen garbage is shell, pomace, pericarp, one or more of mixing of vegetables；
3）By the sludge after processing and kitchen garbage according to 10-15：1 ratio is blended, and obtains mixture；
4）Mixture natural air drying, or drying machine are dried, moisture content is down to less than 10%；
5）By step 4）Dried material disintegrating, crosses 100 mesh sieves, is placed in pyrolysis installation, under anoxic condition, is warming up to
500-700 DEG C, 3-4h is fired, Muffle furnace Temperature fall is allowed to 25-27 DEG C, you can obtain sludge organism charcoal.
2. the preparation method of sludge according to claim 1, kitchen garbage charcoal soil heavy metal passivant, its feature
It is, described sludge dewatering treatment is that agent-feeding treatment or mechanical dehydration are handled, and moisture content is less than 80%.
3. the preparation method of sludge according to claim 1, kitchen garbage charcoal soil heavy metal passivant, its feature
Be, described eluent is 0.05-0.3mol/L oxalic acid solutions, 0.01-0.005mol/L edta solutions,
In 0.05-0.2mol/L liquor ferri trichloridis, 0.01-0.1mol/L humic acid solutions, 0.01-0.1mol/L citric acid solutions
One or more of combinations；Main purpose is the heavy metal in activation or chelating sludge, makes heavy metal no longer close with sludge
With reference to.
4. the preparation method of sludge according to claim 1, kitchen garbage charcoal soil heavy metal passivant, its feature
It is, described kitchen garbage is peanut shell, melon seed cases, corncob, bagasse, pericarp, vegetable waste are rich in cellulose or have
The rubbish of machine matter.
5. the preparation method of sludge according to claim 1, kitchen garbage charcoal soil heavy metal passivant, its feature
It is, described pyrolysis installation is Muffle furnace or pyrolysis reactor or domestic garbage pyrolysis stove.
6. the preparation method of sludge according to claim 3, kitchen garbage charcoal soil heavy metal passivant, its feature
It is, comprises the following steps：
1）Sludge from wastewater treatment plant or water body Dredged Sludge after dewater treatment, addition 0.06mol/L oxalic acid solutions,
Eluent consumption is 2L in 0.08mol/L humic acid solutions, every 1kg sludge, and elution removes part heavy metal；
2）Peanut shell, melon seed cases, corncob, bagasse are crushed, particle diameter is crushed to less than 2cm, described kitchen garbage is dry
Shell or pericarp vegetables；
3）By the sludge after plate and frame filter press press filtration and kitchen garbage according to 10-15：1 mass ratio is blended, and obtains mixture；
4）By mixture natural air drying, make moisture content below 10%；
5）By step 4）Dried material disintegrating, crosses 100 mesh sieves, is placed in pyrolysis installation, under anoxic condition, is warming up to
500-700 DEG C, fire after 4h, allow Muffle furnace Temperature fall to 25 DEG C, you can obtain sludge organism charcoal.
7. the preparation method of sludge according to claim 3, kitchen garbage charcoal soil heavy metal passivant, its feature
It is, comprises the following steps：
1）Sludge from wastewater treatment plant after sludge dewatering equipment dewater treatment, addition 0.09mol/L citric acid solutions,
Eluent consumption is 3L in 0.03mol/L edta solutions, 0.013mol/L liquor ferri trichloridis, every 1kg sludge, is drenched
Wash away except part heavy metal；
2）Corncob, bagasse, pericarp, vegetable waste are crushed, particle diameter is crushed to less than 2cm；
3）By the sludge after plate and frame filter press press filtration and kitchen garbage according to 10-15：1 mass ratio is blended, and obtains mixture；
4）Mixture is placed in 400 DEG C of dryings in drying machine, makes moisture content below 10%；
5）By step 4）Dried material disintegrating, crosses 100 mesh sieves, is placed in pyrolysis installation, under anoxic condition, is warming up to
500-700 DEG C, fire after 4h, allow Muffle furnace Temperature fall to 25 DEG C, you can obtain sludge organism charcoal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640108.0A CN107252676A (en) | 2017-07-31 | 2017-07-31 | A kind of preparation method of sludge, kitchen garbage charcoal soil heavy metal passivant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640108.0A CN107252676A (en) | 2017-07-31 | 2017-07-31 | A kind of preparation method of sludge, kitchen garbage charcoal soil heavy metal passivant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107252676A true CN107252676A (en) | 2017-10-17 |
Family
ID=60025228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710640108.0A Pending CN107252676A (en) | 2017-07-31 | 2017-07-31 | A kind of preparation method of sludge, kitchen garbage charcoal soil heavy metal passivant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107252676A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108176359A (en) * | 2018-01-22 | 2018-06-19 | 济南大学 | A kind of preparation method of mixing waste charcoal |
| CN108213037A (en) * | 2017-12-12 | 2018-06-29 | 常州杰轩纺织科技有限公司 | A kind of Food waste treatment method |
| CN108249720A (en) * | 2018-03-13 | 2018-07-06 | 山东金孚环境工程有限公司 | A kind of method that mechanical dehydration coupling desiccation pyrolysis prepares sludge carbon |
| CN109575929A (en) * | 2018-11-28 | 2019-04-05 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of the agent of heavy-metal contaminated soil complex repairation and its rehabilitating soil |
| CN109652091A (en) * | 2019-01-29 | 2019-04-19 | 北京云水浩瑞环境科技有限公司 | The system and method for preparing soil conditioner using sludge and kitchen garbage |
| CN110899314A (en) * | 2019-10-28 | 2020-03-24 | 上海市政工程设计研究总院（集团）有限公司 | Preparation method and application of leacheate for purifying contaminated soil |
| CN111253944A (en) * | 2020-03-28 | 2020-06-09 | 河南恒天久大实业有限公司 | Method for preparing soil heavy metal passivator from biogas residues |
| CN111250046A (en) * | 2020-03-18 | 2020-06-09 | 台州职业技术学院 | Method for preparing biochar by hydrolyzing and carbonizing kitchen waste |
| CN112275788A (en) * | 2020-09-27 | 2021-01-29 | 东华大学 | Method for solidifying and stabilizing heavy metal ions in soil by using sludge-based biochar |
| CN113800745A (en) * | 2021-09-06 | 2021-12-17 | 东莞市凯威尔环保材料有限公司 | Organic dehydrating agent for dredging sludge |
| CN114471562A (en) * | 2021-12-28 | 2022-05-13 | 浙江大学 | Metal self-doped sludge carbon-based catalytic material and preparation method and application thereof |
| CN114558556A (en) * | 2022-01-11 | 2022-05-31 | 河南工程学院 | Method for jointly preparing gel filler for purifying nitrogen and phosphorus in sewage by using solid wastes |
| CN115055510A (en) * | 2022-06-14 | 2022-09-16 | 西北大学 | Remediation method and application of heavy metal contaminated soil |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084128A (en) * | 2014-07-22 | 2014-10-08 | 天津城建大学 | Kitchen waste residue modified sludge activated carbon for sweater treatment |
| CN105855275A (en) * | 2016-06-22 | 2016-08-17 | 中国科学院城市环境研究所 | Method for processing sludge and kitchen wastes |
| CN106753466A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal for mixing kitchen garbage |
| CN107399936A (en) * | 2017-07-31 | 2017-11-28 | 河南工程学院 | A kind of preparation method of sludge organism charcoal water-permeable brick for purification of water quality |
-
2017
- 2017-07-31 CN CN201710640108.0A patent/CN107252676A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084128A (en) * | 2014-07-22 | 2014-10-08 | 天津城建大学 | Kitchen waste residue modified sludge activated carbon for sweater treatment |
| CN105855275A (en) * | 2016-06-22 | 2016-08-17 | 中国科学院城市环境研究所 | Method for processing sludge and kitchen wastes |
| CN106753466A (en) * | 2016-12-21 | 2017-05-31 | 福建师范大学 | A kind of preparation method of the sludge base charcoal for mixing kitchen garbage |
| CN107399936A (en) * | 2017-07-31 | 2017-11-28 | 河南工程学院 | A kind of preparation method of sludge organism charcoal water-permeable brick for purification of water quality |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213037A (en) * | 2017-12-12 | 2018-06-29 | 常州杰轩纺织科技有限公司 | A kind of Food waste treatment method |
| CN108176359A (en) * | 2018-01-22 | 2018-06-19 | 济南大学 | A kind of preparation method of mixing waste charcoal |
| CN108249720B (en) * | 2018-03-13 | 2020-06-16 | 山东金孚环境工程有限公司 | Method for preparing sewage peat by mechanical dehydration coupled drying pyrolysis |
| CN108249720A (en) * | 2018-03-13 | 2018-07-06 | 山东金孚环境工程有限公司 | A kind of method that mechanical dehydration coupling desiccation pyrolysis prepares sludge carbon |
| CN109575929A (en) * | 2018-11-28 | 2019-04-05 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of the agent of heavy-metal contaminated soil complex repairation and its rehabilitating soil |
| CN109652091A (en) * | 2019-01-29 | 2019-04-19 | 北京云水浩瑞环境科技有限公司 | The system and method for preparing soil conditioner using sludge and kitchen garbage |
| CN110899314A (en) * | 2019-10-28 | 2020-03-24 | 上海市政工程设计研究总院（集团）有限公司 | Preparation method and application of leacheate for purifying contaminated soil |
| CN111250046A (en) * | 2020-03-18 | 2020-06-09 | 台州职业技术学院 | Method for preparing biochar by hydrolyzing and carbonizing kitchen waste |
| CN111250046B (en) * | 2020-03-18 | 2022-03-11 | 台州职业技术学院 | Method for preparing biochar by hydrolyzing and carbonizing kitchen waste |
| CN111253944A (en) * | 2020-03-28 | 2020-06-09 | 河南恒天久大实业有限公司 | Method for preparing soil heavy metal passivator from biogas residues |
| CN112275788A (en) * | 2020-09-27 | 2021-01-29 | 东华大学 | Method for solidifying and stabilizing heavy metal ions in soil by using sludge-based biochar |
| CN113800745A (en) * | 2021-09-06 | 2021-12-17 | 东莞市凯威尔环保材料有限公司 | Organic dehydrating agent for dredging sludge |
| CN114471562A (en) * | 2021-12-28 | 2022-05-13 | 浙江大学 | Metal self-doped sludge carbon-based catalytic material and preparation method and application thereof |
| CN114471562B (en) * | 2021-12-28 | 2023-03-28 | 浙江大学 | Metal self-doped sludge carbon-based catalytic material and preparation method and application thereof |
| CN114558556A (en) * | 2022-01-11 | 2022-05-31 | 河南工程学院 | Method for jointly preparing gel filler for purifying nitrogen and phosphorus in sewage by using solid wastes |
| CN115055510A (en) * | 2022-06-14 | 2022-09-16 | 西北大学 | Remediation method and application of heavy metal contaminated soil |
| CN115055510B (en) * | 2022-06-14 | 2023-09-22 | 西北大学 | Restoration method and application of heavy metal contaminated soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107252676A (en) | A kind of preparation method of sludge, kitchen garbage charcoal soil heavy metal passivant | |
| CN110240386B (en) | Straw and sludge cooperative treatment device and method | |
| Meng et al. | Physicochemical properties of biochar produced from aerobically composted swine manure and its potential use as an environmental amendment | |
| CN104148358B (en) | A kind of method and apparatus for handling organic solid castoff | |
| CN105837005B (en) | Municipal biological dewatered organic conditioner of excess sludge and preparation method thereof | |
| CN107540432A (en) | A kind of method and apparatus with active oxygen and activation act high speed processing organic solid castoff | |
| CN104148357B (en) | A kind of method and apparatus for processing organic solid castoff | |
| CN104961313B (en) | It is a kind of to strengthen the method for anaerobically digested sludge heavy metal stabilization process | |
| CN105170091A (en) | Preparation method of iron-modified reed biological carbon, and application of iron-modified reed biological carbon in treatment of phosphorus wastewater | |
| CN104324925B (en) | One way of life refuse landfill end covering system | |
| CN105126756A (en) | Preparation method for papermaking argillaceous activated carbon adsorption material | |
| CN102079851B (en) | Disposable degradable material produced by using residual active sludge and preparation method thereof | |
| CN102765866B (en) | Method for recycling urban sludge | |
| CN111250046B (en) | Method for preparing biochar by hydrolyzing and carbonizing kitchen waste | |
| CN105753608A (en) | Preparation method and application of novel iron-based biochar | |
| CN104368306A (en) | Preparation method of biochar-like matter used for heavy metal contaminated soil repair | |
| CN110142024A (en) | A kind of method and its application preparing N doping multiporous biological charcoal using abandoned biomass | |
| CN105253979A (en) | Flocculation purification agent for heavy metal wastewater in rivers and preparation method and using method thereof | |
| CN112620317A (en) | Kitchen waste treatment and fermentation process | |
| CN104445513A (en) | Treatment method of straws capable of adsorbing grease in dining kitchen wastewater | |
| CN110002709A (en) | A kind of novel municipal sludge conditioner | |
| CN105536698A (en) | Preparation method of papermaking sludge activated biochar | |
| CN113019323B (en) | Ultrasonic activated biochar and preparation method and application thereof | |
| CN113231031A (en) | Method for preparing high-adsorption-performance biochar from urban garden waste, product and application thereof | |
| CN108840748A (en) | Preparation method based on abandoned vinasse, the geobiont organic fertilizer of kitchen garbage |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171017 |