CN109392655A - A method of sludge and metallurgical slag are mixed to get planting soil - Google Patents
A method of sludge and metallurgical slag are mixed to get planting soil Download PDFInfo
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- CN109392655A CN109392655A CN201811372708.4A CN201811372708A CN109392655A CN 109392655 A CN109392655 A CN 109392655A CN 201811372708 A CN201811372708 A CN 201811372708A CN 109392655 A CN109392655 A CN 109392655A
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- soil
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- metallurgical slag
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
- A01G24/17—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing slag
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
- A01G24/25—Dry fruit hulls or husks, e.g. chaff or coir
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/28—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
Abstract
A kind of method that sludge and metallurgical slag are mixed to get planting soil of the present invention, includes the following steps: to detect that the content of the heavy metal in sludge and metallurgical slag is respectively X1, X2；By quality be M sludge and quality be L metallurgical slag be uniformly mixed by forced stirrer, obtain planting soil；The quality Y of heavy metal in planting soil is obtained by X1*M+X2*L；The quality Y of heavy metal obtains the content of heavy metal in planting soil divided by the gross mass (M+L) of planting soil；The mass M of the sludge and the quality L of metallurgical slag are to meet (GB15618-1995) three-level PH > 6.5 standard of soil environment quality (mg/kg) to be adjusted by the content of heavy metal in the planting soil.Sludge and metallurgical slag are mixed to get the planting soil for meeting standard of soil environment quality (mg/kg) (GB15618-1995) three-level PH > 6.5 by the present invention, are suitable for urban afforestation, mine is repaired, the various aspects such as tree planting of afforesting.So that solid waste is utilized effectively, turns waste into wealth.
Description
Technical field
The present invention relates to planting technique soil fields, and in particular to is mixed to get sludge and metallurgical slag and meets soil environment matter
The method of the planting technique soil of amount standard.
Background technique
Terminal sludge (biogas residue) organic matter rich in, the nitrogen, phosphorus, potassium that city is handled through sewage treatment plant, can be improved
The fertility of soil, granularity, pH value meet the requirement of soil, but cannot be used alone, while content of beary metal is exceeded；Metallurgical slag
It is the slag charge left, granularity, pH value meet the requirement of soil, but certain metallurgical slag content of beary metal are exceeded, aqueous heavy metal
Content is exceeded, and contains a certain amount of chemical organic compounds.Both wastes how are efficiently used, becomes and meets soil ring
The planting technique soil of border quality standard, turns waste into wealth, is a problem so far.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of method that sludge and metallurgical slag are mixed to get planting soil,
The method can dry chemical organic compounds, reduce pollutant control expense, reach the comprehensive utilization of pollution solid waste, and such soil compares
It is suitable for urban afforestation, mine reparation, afforestation etc..
Specific technical solution is as follows:
A method of sludge and metallurgical slag are mixed to get planting soil, included the following steps:
S1: the content for detecting the heavy metal in sludge and metallurgical slag is respectively X1, X2；
S2: by quality be M sludge and quality be L metallurgical slag be uniformly mixed by forced stirrer, obtain planting soil；
S3: the quality Y of heavy metal in planting soil is obtained by X1*M+X2*L；
S4: the quality Y of heavy metal obtains the content of heavy metal in planting soil divided by the gross mass (M+L) of planting soil；
The mass M of the sludge and the quality L of metallurgical slag are to meet soil by the content of heavy metal in the planting soil
Environmental quality standards (mg/kg) (GB15618-1995) three-level PH > 6.5 are adjusted.
Content of the present invention is the quality of heavy metal in every kilogram of flyash or sludge or planting soil.
The mass ratio of the M and L is 1:2-5.
The metallurgical slag is the one or more of the red mud of the flyash of power plant, the ferronickel slag of steel mill and alumina producer.
It further include soil and/or tailing in planting soil in preferred steps S2.
When planting soil is sludge, metallurgical slag and tailing, tailing quality is N, and the content of beary metal for measuring tailing is X3,
The content of heavy metal in planting soil is obtained by calculating (X1*M+X2*L+X3*N)/(M+L+N), the mass M of the sludge is smelted
The quality L of the slag and quality N of tailing is to meet standard of soil environment quality (mg/ by the content of heavy metal in the planting soil
Kg) (GB15618-1995) three-level PH > 6.5 are adjusted.
The tailing is the one or more of iron tailings, copper tailing, granite and Kimberley tailing.
When planting soil is sludge, metallurgical slag and soil, the quality of soil is O, passes through calculating (X1*M+X2*L)/(M+L+
O the content of heavy metal in planting soil) is obtained, the quality O of the mass M of the sludge, the quality L of metallurgical slag and soil is to pass through institute
The content for stating heavy metal in planting soil meets standard of soil environment quality (mg/kg) (GB15618-1995) three-level PH > 6.5
It is adjusted.
It further include stalk, rice husk, plant fiber, chicken manure, turfy soil, adhesive and water conservation in planting soil in preferred steps S2
The one or more of agent, to be conducive to the growth of various plants.
The present invention matches the weight of sludge and metallurgical slag, makes to prepare according to the heavy metal content index of sludge and metallurgical slag
Soil afterwards meets standard of soil environment quality (GB15618-1995) three-level PH > 6.5；If two kinds of material proportions are not met, can
Soil or one or more tail residues are added, and aqueous solution is made to meet " Drinking Water health mark under neutral or mild acid conditions
It is quasi- " GB5749-2006 or " urban wastewater treatment firm pollutant emission standard " GB18918-2016, if not meeting, to using area
Domain earth's surface carries out Anti-seeping technology, and is collected to the aqueous filtered through soil, carries out weight to aqueous using reverse osmosis membrane technology
It is multiple to utilize, certain density concentrate is recycled and carries out professional treatment (detailed method is referring to application number
2017108057247 patent application document).
Sludge and metallurgical slag are mixed to get the beneficial effects of the invention are as follows the present invention and meet standard of soil environment quality
(mg/kg) planting soil of (GB15618-1995) three-level PH > 6.5 is suitable for urban afforestation, mine is repaired, tree planting etc. of afforesting is more
Aspect.So that solid waste is utilized effectively, turns waste into wealth.
Specific embodiment
The content of heavy metal is as shown in table 1 in standard of soil environment quality (GB15618-1995)
Table 1 standard of soil environment quality (GB15618-1995) three-level PH > 6.5 (mg/kg)
Embodiment 1
Sludge and flyash are mixed to get planting soil
S1: the content of the heavy metal in sludge and flyash is detected, testing result is as shown in table 2 and table 3；
S2: by quality be 1kg sludge and quality be 5kg flyash be uniformly mixed by forced stirrer, planted
Plant soil；
S3: the content of every heavy metal in planting soil is calculated, with heavy metal cadmium
For: 2.7*1+0.19*5=3.65mg, in this instance, the total content of cadmium are 3.65mg；Successively calculate plantation
The quality of every heavy metal is as shown in table 4 in soil；
S4: the content of heavy metal each in planting soil is mixed divided by gross mass 1+5=6kg
Afterwards in planting soil heavy metal content, by taking heavy metal cadmium as an example: 3.65/6=0.6mg/kg,
Therefore, in this instance, the content of cadmium is 0.73 in planting technique soil after mixing, meets standard of soil environment quality
(mg/kg) (GB15618-1995) three-level PH > 6.5；Successively calculate every content of beary metal in mixed planting technique soil
As shown in table 4, in planting soil content of beary metal below the mark.
The content of beary metal (mg/kg) of 2 sludge of table
The heavy metal content index (mg/kg) of 3 flyash of table
Each content of beary metal and the middle huge sum of money of standard of soil environment quality (GB15618-1995) in 4 embodiment of table, 1 planting soil
The content balance of category
Embodiment 2
Sludge and ferronickel slag are mixed to get planting soil
S1: the content of sludge and the heavy metal in ferronickel slag is detected, testing result is as shown in table 2 and table 5；
S2: by quality be 1kg sludge and quality be 5kg ferronickel slag be uniformly mixed by forced stirrer, planted
Plant soil；
S3: the content of every heavy metal in planting soil is calculated, with heavy metal cadmium
For: 2.7*1+0.063*5=3.015mg, in this instance, the total content of cadmium are 3.015mg；Successively calculate kind
The quality for planting every heavy metal in soil is as shown in table 6；
S4: the content of heavy metal each in planting soil is mixed divided by gross mass 1+5=6kg
Afterwards in planting soil heavy metal content, by taking heavy metal cadmium as an example: 3.015/6=0.5mg/kg,
Therefore, in this instance, the content of cadmium is 0.5 in planting soil, meets standard of soil environment quality (mg/kg)
(GB15618-1995) three-level PH > 6.5；It is as shown in table 6 successively to calculate every content of beary metal in planting soil, such ingredient
In, other than the content of chromium, other comply fully with Soil-environmental standard.
The heavy metal content index (mg/kg) of 5 ferronickel slag of table
Each content of beary metal and the middle huge sum of money of standard of soil environment quality (GB15618-1995) in 6 embodiment of table, 2 planting soil
The content balance of category
To sum up, the soil that sludge is prepared with the metallurgical slags such as flyash or ferronickel slag can meet soil by scientifically matching
The environmental index of earth.
Embodiment 3
Soil needs watering Irrigation, in aqueous solution state and because under Urban Acid Rain state, guaranteeing that solution meets heavy metal liquid
Discharge index, using with reference to " standards for drinking water quality " GB5749-2006 or " urban wastewater treatment firm pollutant emission mark
It is quasi- " GB18918-2016, it is impregnated using two kinds of solution of PH=6.7 aqueous solution and PH=3.8 acid solution, if it is exceeded, then carry out more
Secondary immersion impregnates the sludge of Examples 1 and 2, flyash and ferronickel slag, as a result as shown in table 9-14.With reference to " life drink
With water hygiene standard " GB5749-2006, sludge is under aqueous solution and weakly acidic condition, certain index exceeding standards, after impregnating 3 times, reaches
Mark；If pressing " urban wastewater treatment firm pollutant emission standard " GB18918-2016, impregnate up to standard.With reference to " Drinking Water
Sanitary standard " GB5749-2006, flyash is up to standard under aqueous solution and weakly acidic condition；If by " urban wastewater treatment firm is dirty
Contaminate object discharge standard " GB18918-2016, it is up to standard.Sludge is mixed with flyash, if by " urban wastewater treatment firm pollution
Object discharge standard " GB18918-2016, impregnates up to standard；With reference to " standards for drinking water quality " GB5749-2006, sludge exists
Under aqueous solution and weakly acidic condition, certain index exceeding standards are up to standard after impregnating 3 times, and membrane technology can be used and be collected, and 3 times
It is up to standard.With reference to " standards for drinking water quality " GB5749-2006, sludge and ferronickel slag under aqueous solution and weakly acidic condition, certain
A little index exceeding standards；It is up to standard if pressing " urban wastewater treatment firm pollutant emission standard " GB18918-2016.Sludge and ferronickel slag
It is mixed, if pressing " urban wastewater treatment firm pollutant emission standard " GB18918-2016, percolate is up to standard；With reference to " raw
Sanitary standard for drinking water living " GB5749-2006, under aqueous solution and weakly acidic condition, certain index exceeding standards can for sludge and ferronickel slag
It is collected using membrane technology, until up to standard.
Membrane technology uses degradable mulch (plastic cloth)+non-woven fabrics+drain bar structure, will arrange by the solution of soil permeability
Enter in special collecting pit, by reverse osmosis membrane technology, solution is separated into water (middle water) and concentrate, water (middle water) is still used
It is irrigated in nursery stock, concentrate is specially collected, and carries out heavy metal processing by specialized company
Table 7 " standards for drinking water quality " GB5749-2006 solution content of beary metal standard index (ug/L)
Table 8 " urban wastewater treatment firm pollutant emission standard " GB18918-2016, solution heavy metal standard index (ug/
L)
PH=6.0 after 9 sludge water solution index (ug/L) PH=6.7 of table impregnates
Table 10 sludge weak acid solution index (ug/L) PH=3.8
PH=8.0 after 11 water of coal ash solution index (ug/L) PH=6.7 of table impregnates
Table 12 flyash weak acid solution index (ug/L) PH=3.8
PH=7.9 after 13 ferronickel pulp water solution index (mg/L) PH=6.5 of table impregnates
Table 14 ferronickel slag weak acid solution index (mg/L) PH=4.1
Embodiment 5
The technical requirements of planting soil of the present invention and planting technique soil master control index compare
Table 15 should meet the technical requirements (CJ/T340-2016) of planting technique soil master control index
16 embodiment of the present invention of table, 1 sludge and flyash prepare the Testing index of planting technique soil (referring to the 4th)
Prepare the technical requirements that soil meets planting technique soil (CJ/T340-2016) master control index.In synthesis soil
Stalk, rice husk, plant fiber, chicken manure, turfy soil, adhesive, water-retaining agent etc. are mixed, to the moisture content of synthesis soil, fertility, is glued
The indexs such as degree, pH value are improved, and the growth of various plants is conducive to.The salt content (≤1.5g/kg) of soil can pass through addition
Calcium sulfate or the mode of water logging are reconciled, and acid soil mixes calcium carbonate, these materials are preferably found in solid waste material, sternly
Prohibit incorporation dangerous waste.
Embodiment 6
By the oxide comparison to flyash and soil, the production of hybrid seeds is matched to the metallurgical slags such as sludge and flyash or josephinite
The mechanism for planting soil is analyzed.
| Serial number | Oxide | Flyash (%) | Soil (%) |
| 1 | SiO2 | 57.480 | 64.298 |
| 2 | Al2O3 | 24.110 | 16.943 |
| 3 | CaO | 3.960 | 4.078 |
| 4 | Na2O | 2.258 | 1.523 |
| 5 | Fe2O3 | 6.380 | 6.476 |
| 6 | SO3 | 0.300 | 0.721 |
| 7 | MgO | 2.390 | 1.487 |
| 8 | K2O | 2.023 | 2.521 |
| 9 | CuO | 0.016 | |
| 10 | P2O5 | 0.170 | 0.431 |
It in summary it can be seen, for the sum of sieve and silica-sesquioxide more than 80%, some oxide contents are close；Solid waste is configured to green
Change planting soil use by inorganic solid waste (metallurgical slags such as flyash, ferronickel slag, red mud) and organic solid waste (such as sludge be also known as biogas residue,
Organic waste) it combines, it is configured to meet the novel greening planting soil of planting technique soil index；Pass through the nursery stock absorption portion of plantation
Pollutant is divided to pass through the microorganism in soil, enzyme decomposing pollutant by irrigation leaching pollutant.
Percolate is recycled, aqueous separation is carried out, water is still applied to circulation and pours, and concentrate is as exciting agent mother liquor, application
In stirring into flyash and alkaline residue, tailing, metallurgical slag etc. in concrete product production, solidify pollutant, above procedure is not only
Make pollutant minimizing, after a period of time, Novel planting soil is safe and stable, be recycled applied to urban afforestation, mine management,
In afforestation project, make solid wastes recycling.
Claims (8)
1. a kind of method that sludge and metallurgical slag are mixed to get planting soil, characterized by the following steps:
S1: the content for detecting the heavy metal in sludge and metallurgical slag is respectively X1, X2；
S2: by quality be M sludge and quality be L metallurgical slag be uniformly mixed by forced stirrer, obtain planting soil；
S3: the quality Y of heavy metal in planting soil is obtained by X1*M+X2*L；
S4: the quality Y of heavy metal obtains the content of heavy metal in planting soil divided by the gross mass (M+L) of planting soil；
The mass M of the sludge and the quality L of metallurgical slag are to meet soil environment by the content of heavy metal in the planting soil
Quality standard (mg/kg) (GB15618-1995) three-level PH > 6.5 are adjusted.
2. a kind of method that sludge and metallurgical slag are mixed to get planting soil as described in claim 1, it is characterised in that: described
The mass ratio of M and L is 1:2-5.
3. a kind of method that sludge and metallurgical slag are mixed to get planting soil as described in claim 1, it is characterised in that: described
Metallurgical slag is the one or more of the red mud of the flyash of power plant, the ferronickel slag of steel mill and alumina producer.
4. a kind of method that sludge and metallurgical slag are mixed to get planting soil as described in claim 1, it is characterised in that: step
It further include soil and/or tailing in planting soil in S2.
5. a kind of method that sludge and metallurgical slag are mixed to get planting soil as claimed in claim 4, it is characterised in that: step
S2 planting soil is sludge, metallurgical slag and tailing, and tailing quality is N, and the content of beary metal for measuring tailing is X3, passes through calculating
(X1*M+X2*L+X3*N)/(M+L+N) obtains the content of heavy metal in planting soil, mass M, the quality of metallurgical slag of the sludge
The quality N of L and tailing is to meet standard of soil environment quality (mg/kg) by the content of heavy metal in the planting soil
(GB15618-1995) three-level PH > 6.5 are adjusted.
6. a kind of method that sludge and metallurgical slag are mixed to get planting soil as claimed in claim 4, it is characterised in that: described
Tailing is the one or more of iron tailings, copper tailing, granite and Kimberley tailing.
7. a kind of method that sludge and metallurgical slag are mixed to get planting soil as claimed in claim 4, it is characterised in that: step
S2 planting soil is sludge, metallurgical slag and soil, and the quality of soil is O, is planted by calculating (X1*M+X2*L)/(M+L+O)
The content of heavy metal in soil, the quality O of the mass M of the sludge, the quality L of metallurgical slag and soil are by the planting soil
The content of heavy metal meets (GB15618-1995) three-level PH > 6.5 standard of soil environment quality (mg/kg) to be adjusted.
8. a kind of method that sludge and metallurgical slag are mixed to get planting soil as described in claim 1 or 4, it is characterised in that:
It further include one kind or several of stalk, rice husk, plant fiber, chicken manure, turfy soil, adhesive and water-retaining agent in planting soil in step S2
Kind.
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| CN112409105A (en) * | 2020-12-03 | 2021-02-26 | 郑州大学 | Soil conditioner for mining and metallurgy sludge-based forests and preparation method thereof |
| WO2023173564A1 (en) * | 2022-03-14 | 2023-09-21 | 北京中力信达环境技术有限公司 | Artificial magnetic soil, and preparation method therefor and use thereof |
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