CN104098237A - Sludge or soil treatment method and heavy metal component stabilizing agent - Google Patents
Sludge or soil treatment method and heavy metal component stabilizing agent Download PDFInfo
- Publication number
- CN104098237A CN104098237A CN201310123467.0A CN201310123467A CN104098237A CN 104098237 A CN104098237 A CN 104098237A CN 201310123467 A CN201310123467 A CN 201310123467A CN 104098237 A CN104098237 A CN 104098237A
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- Prior art keywords
- mud
- soil
- heavy metal
- metal
- chloride
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
- C02F11/145—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances using calcium compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a stabilizing treatment method for heavy metal components in sludge; according to the method, a heavy metal component stabilizing agent is selected for stabilizing treatment of the heavy metal components in the sludge, wherein the heavy metal component stabilizing agent comprises at least 1 acidic metal salts of iron, zinc, copper, manganese and aluminum and at least 1 alkali metal or alkaline earth metal alkali compound of calcium, magnesium, sodium and potassium, the mixing ratio of heavy metal component stabilizing agent and sludge is: 100 parts by weight of sludge corresponding to 0.5 ~ 30 parts by weight of the acidic metal salt and 0.5-60 parts by weight of the alkali metal or alkaline earth metal alkali compound. By use of the method, stabilizing treatment of trace heavy metal lead and other harmful ingredients contained in the sludge produced from a factory and the like can be easily performed, the processed sludge can be used for purposes such as landfill and the like, the heavy metal harmful ingredients contained in the stabilizing treated may not dissolved from the sludge, so that the environment can be protected.
Description
Technical field
The present invention relates to a kind of mud or agent, soil treatment method and the agent of heavy metal stable components chemical drug, specifically relate to a kind of for mud or mud soil containing heavy metal composition that factory etc. is generated can be safely for purposes such as landfills, and the objectionable impuritiess such as the arsenic containing in mud or mud soil, lead, cadmium, nickel, chromium (sexavalence) are carried out to stabilization treatment, make the method for its not stripping and carry out the heavy metal stable components chemical drug agent that this processing is used.
Background technology
In the product manufacture of factory, mine, iron work etc., refining, surface treatment, the operation such as gold-plated, can produce the waste liquid that contains heavy metal.Wherein, the waste liquid that concentration is high can be recycled by recovery process, again becomes raw material, concentration low and the waste liquid that itself is exactly impurity can be drained as waste water.For the heavy metal substance containing in waste water, generally in wastewater treatment operation, can add basic agent, oxygenant etc., in water, set it as throw out stripping, then add coagulated material, make its concentrating and precipitating with precipitation concentrating unit, then dewater with pressure filter etc., the material after concentrating and precipitating dehydration is carried out to the waste treatments such as landfill as mud.While mud being carried out to the waste treatments such as landfill, in order to prevent the pollution to around, must solidify that objectionable impurities wherein makes its stabilization and can stripping, the application property of while when maintaining its processing, also must have construction intensity to a certain degree.When the soil of the mud that contains heavy metal or contaminated by heavy metals mistake is carried out to waste treatment, in order not allow its leaching ability of heavy metal containing, need to carry out stabilization treatment.As everyone knows, inner complex (Chelate) can allow not stripping of heavy metal, but because it uses to neutral range in acidity, if sneak into the solidify material such as cheap cement in order to maintain its application property in the time processing, just its not dissolving out capability can reduce.Therefore, if increase the addition of inner complex, just have the problem that processing cost increases.
Summary of the invention
The object of this invention is to provide a kind of mud or agent, soil treatment method of the not stripping of made heavy metal that can solve above-mentioned prior art problem and carry out the heavy metal stable components chemical drug agent that this processing is used.
A kind of mud provided by the invention or agent, soil treatment method are, in the mud of 100 weight unit or soil, mix the acid metal salt of 0.5～30 weight unit, and mix the basic metal of 0.5～60 weight unit or the basic cpd of alkaline-earth metal, the heavy metal composition in mud or soil is carried out to the method for stabilization treatment.
The heavy metal composition containing in above-mentioned mud or soil is the ion of a kind at least comprising in arsenic, lead, cadmium, nickel, chromium (sexavalence), mercury, antimony, selenium, barium.
The present invention also provides a heavy metal species stable components chemical drug agent, and this kit is containing the acid metal salt of 0.5～30 weight unit, and the basic metal of 0.5～60 weight unit or the basic cpd of alkaline-earth metal.
The metal salt powder of at least a kind that above-mentioned acid metal salt is preferably selected from iron(ic) chloride, iron nitrate, ferric sulfate, zinc chloride, zinc sulfate, cupric chloride, cupric nitrate, copper sulfate, Manganous chloride tetrahydrate, manganous sulfate, aluminum chloride, Tai-Ace S 150 or 15～35wt% aqueous solution.
The basic cpd of above-mentioned basic metal or alkaline-earth metal is the powder of at least a kind of selecting from calcium oxide, calcium hydroxide, Calucium Silicate powder, magnesium oxide, magnesium hydroxide, sodium hydroxide, water glass, potassium hydroxide, potassium silicate, ironmaking slag and cement.
Use heavy metal stable components chemical drug provided by the invention agent to carry out mud or soil treatment or use mud provided by the invention or agent, soil treatment method, just can carry out stabilization treatment to the heavy metal composition in mud or soil simply.Carried out mud or the soil of this stabilization treatment, even drenched by rainwater etc., heavy metal composition wherein can stripping yet, can safely mud after treatment or soil be carried out to the waste treatments such as landfill.
Embodiment
Using the mud of processing of the present invention or soil is mainly that in the inorganic mud that gives off in the product manufacture, refining, surface treatment of chemical plant, mine, smeltery, iron work, gold-plated factory etc., the operation such as gold-plated or these process of factory production, institute produces the mud soil of giving birth to.The heavy metal composition containing in these mud or soil is the ion of a kind at least comprising in arsenic, lead, cadmium, nickel, chromium (sexavalence), mercury, antimony, selenium, barium etc.
Iron(ic) chloride, iron nitrate, ferric sulfate, zinc chloride, zinc sulfate, cupric chloride, cupric nitrate, copper sulfate, zinc chloride, manganous sulfate, aluminum chloride, Tai-Ace S 150 etc. be can use as the acid metal salt using in heavy metal stable components chemical drug of the present invention agent, environmental protection and iron(ic) chloride, ferric sulfate, aluminum chloride, Tai-Ace S 150 are cheaply more suitable in addition using.Molysite is now divalent or 3 valency salt preferably.Molysite and aluminium salt is powder or 15～35wt% aqueous solution preferably.In addition, if when in processed mud, water ratio is higher, preferably powder.
Acid metal salt is selected at least a kind of use from iron, zinc, copper, manganese, aluminium, if can obtain the high content acid wastewater that contains above-mentioned metal, having an advantage is can be directly using this waste water as the materials'use that carries out sludge treatment.
Basic salt as the basic metal using in heavy metal stable components chemical drug of the present invention agent, alkaline-earth metal can use calcium oxide, calcium hydroxide, Calucium Silicate powder, magnesium oxide, magnesium hydroxide, sodium hydroxide, water glass, potassium hydroxide, potassium silicate, ironmaking slag, cement etc., is more suitable in addition using easy acquisition and lower-cost calcium oxide, calcium hydroxide, Calucium Silicate powder, magnesium oxide, sodium hydroxide, ironmaking slag, cement.The basic salt of basic metal, alkaline-earth metal is preferably added in mud or soil as powder.In addition, magnesium oxide and cement also can dual-purpose do the solidify material of mud or soil.
The moisture that uses the mud of processing of the present invention to contain 5～95wt%, if this moisture content is too low, and can become difficulty mixing of heavy metal stable components chemical drug agent, if too high levels, the water ratio of the stabilization treatment waste obtaining can uprise, easily flows, and operability step-down.In addition, also can utilize chemical reaction heat, water and the reaction heat of the basic cpd of the acid metal salt that uses in the present invention and basic metal, alkaline-earth metal, reduce the water ratio in processed mud.In this situation, the combination of the Tai-Ace S 150 that the most handy chemical reactivity is high or ferric sulfate and magnesium oxide or calcium oxide.In addition, the basic cpd of acid metal salt and basic metal, alkaline-earth metal both can add respectively separately in mud, added after also can in advance both being mixed into medicament with powder mixing device.
The agent of above-mentioned heavy metal stable components chemical drug with the combined amount of mud or soil is: the acid metal salt of corresponding 0.5～30 weight unit of the mud of 100 weight unit or soil and the basic metal of 0.5～60 weight unit, the basic cpd of alkaline-earth metal.In addition, if mud contains large quantity of moisture, be preferably converted into solid form and carry out calculated weight, moisture percentage in sewage sludge is below 20% time, can directly be used for calculated weight.
Mud or soil, with more than mixing of heavy metal stable components chemical drug agent should be used mixing equipment mixed for several minutes, mix entirety.The stabilization treatment waste obtaining like this, the basic cpd of its acid metal salt and basic metal, alkaline soil metalloid produces chemical reaction in mud, form activity degree high hydroxide metal, what make to contain in mud is in the above heavy metal ion adsorbed, realizes its not stripping.Be that the basic metal of high pH, the basic cpd of alkaline-earth metal mix in the situation that water exists with water miscible acid metal salt, because pH value is high, the oxyhydroxide that has added metal ion just can generate precipitation, water miscible heavy metal composition, by the combination firmly of the oxyhydroxide of these generations or absorption, becomes stable.Therefore, be no matter this stabilization treatment waste (such as mud) to be deposited in outdoor, or for landfill etc., the heavy metal objectionable constituent in waste can stripping from waste, thereby has protected environment.
Below, describe with regard to specific embodiment.
In following each embodiment (embodiment 1 to 8), the mud that contains heavy metal uses the dehydration dope (water ratio 45%) (mud 1) producing in the wastewater treatment operation in chemical plant.The acid metal salt adding in this mud 1 can use select from iron(ic) chloride, iron nitrate, ferric sulfate, zinc chloride, zinc sulfate, cupric chloride, cupric nitrate, copper sulfate, zinc chloride, manganous sulfate, aluminum chloride, Tai-Ace S 150 etc. one kind or two or more, as preferred version, can use more environmental protection and iron(ic) chloride, ferric sulfate, aluminum chloride, Tai-Ace S 150 cheaply.Specifically, according to the addition shown in each embodiment in table 1, add the Al selling on the market as acid metal salt
2(SO4)
3, AlCl
3, FeSO
4, or FeCl
2reagent, and MgO, the CaO, the Ca (OH) that on market as basic cpd, sell
2reagent, and with mixing machine mix 10 minutes.
Obtained stabilization treatment mud moisturizing placement was carried out to dissolution test according to universal method after 1 day, and its result is as shown in table 1.
Table 1
In addition, in following each embodiment (embodiment 9 to 16), the mud that contains heavy metal uses the dehydration dope (water ratio 40%) (mud 2) producing in the surface treatment procedure of Metal Processing Factory.In this mud 2, according to the addition shown in each embodiment in table 2, add the Al selling on the market as acid metal salt
2(SO
4)
3, AlCl
3, FeSO
4, or FeCl
2reagent, and MgO, the CaO, the Ca (OH) that on market as basic cpd, sell
2reagent, and with mixing machine mix 10 minutes.
Obtained stabilization treatment mud moisturizing placement was carried out to dissolution test according to universal method after 1 day, and its result is as shown in table 2.
Table 2
In addition, in following each embodiment (embodiment 17 to 23), the mud that contains heavy metal uses the dehydration dope (water ratio 49%) (mud 3) producing in the wastewater treatment operation in chemical plant.In this mud 3, according to the addition shown in each embodiment in table 3, add the Al selling on the market as acid metal salt
2(SO
4)
3, AlCl
3, FeSO
4, or FeCl
2reagent, and MgO, the CaO, the Ca (OH) that on market as basic cpd, sell
2reagent, and with mixing machine mix 10 minutes.
Obtained stabilization treatment mud moisturizing placement was carried out to dissolution test according to universal method after 1 day, and its result is as shown in table 3.
Table 3
In addition, in following each embodiment (embodiment 24 to 29), the soil that contains heavy metal uses the contaminated soil (water ratio 26%) producing in old site, chemical plant.In this contaminated soil, according to the addition shown in each embodiment in table 4, add the Al selling on the market as acid metal salt
2(SO
4)
3reagent, and the MgO reagent of selling on market as basic cpd, and mix 10 minutes with mixing machine.
Obtained stabilization treatment contaminated soil moisturizing placement was carried out to dissolution test according to universal method after 1 day, and its result is as shown in table 4.
Table 4
In addition.In the mud or contaminated soil using, add the FeSO selling on the market as acid metal salt in following embodiment (embodiment 30 to 37)
4, or Al
2(SO
4)
3reagent, and the MgO or the Ca (OH) that on market as basic cpd, sell
2reagent or with tobermorite (Tobermorite) (Ca
10[Si
12o
31(OH)
6] 8H
2o) be the Calucium Silicate powder powder of principal constituent, be mixed and made in advance adsorption material by proportioning shown in table 5 with the powder body mixing arrangement of selling on market, and add after above-mentioned adsorption material and mix 10 minutes with mixing machine by addition shown in each embodiment in table 5.
Obtained stabilization treatment mud moisturizing placement was carried out to dissolution test according to universal method after 1 day, and its result is as shown in table 5.
Table 5
Below, describe with regard to comparative example.
Use the mud identical with the mud 1 using in embodiment 1～8 as the mud that contains heavy metal, in this mud, according to the addition shown in each comparative example in table 6 (comparative example 1 to 7), add and the identical acid metal salt (Al selling on market used in embodiment 1～8
2(SO
4)
3, AlCl
3, FeSO
4, or FeCl
2reagent) and basic cpd (MgO, the CaO, the Ca (OH) that on market, sell
2reagent), and with mixing machine mix 10 minutes.
Obtained stabilization treatment mud moisturizing placement was carried out to dissolution test according to universal method after 1 day, and its result is as shown in table 6.
Table 6
In addition, use the mud identical with the mud 3 using in embodiment 17～23 as the mud that contains heavy metal, in this mud, according to the addition shown in each comparative example in table 7 (comparative example 8 to 13), add and the identical acid metal salt (Al selling on market used in embodiment 1～8
2(SO
4)
3, AlCl
3, FeSO
4, or FeCl
2reagent) and basic cpd (MgO, the CaO reagent sold on market), and mix 10 minutes with mixing machine.
Obtained stabilization treatment mud moisturizing placement was carried out to dissolution test according to universal method after 1 day, and its result is as shown in table 7.
Table 7
Claims (7)
1. a mud or agent, soil treatment method, it is characterized in that, in the mud of 100 weight unit or soil, mix the acid metal salt of 0.5～30 weight unit, and mix the basic metal of 0.5～60 weight unit or the basic cpd of alkaline-earth metal, the heavy metal composition in mud or soil is carried out to stabilization treatment.
2. mud as claimed in claim 1 or agent, soil treatment method, it is characterized in that, above-mentioned acid metal salt is the metal salt powder of at least a kind or the 15～35wt% aqueous solution of selecting from iron(ic) chloride, iron nitrate, ferric sulfate, zinc chloride, zinc sulfate, cupric chloride, cupric nitrate, copper sulfate, Manganous chloride tetrahydrate, manganous sulfate, aluminum chloride, Tai-Ace S 150.
3. mud as claimed in claim 1 or agent, soil treatment method, it is characterized in that, the basic cpd of above-mentioned basic metal or alkaline-earth metal is the powder of at least a kind of selecting from calcium oxide, calcium hydroxide, Calucium Silicate powder, magnesium oxide, magnesium hydroxide, sodium hydroxide, water glass, potassium hydroxide, potassium silicate, ironmaking slag and cement.
4. mud or the agent, soil treatment method described in as arbitrary in claims 1 to 3, it is characterized in that, the heavy metal composition containing in above-mentioned mud or soil is the ion of a kind at least comprising in arsenic, lead, cadmium, nickel, chromium (sexavalence), mercury, antimony, selenium, barium.
5. for the treatment of the heavy metal stable components chemical drug agent of mud or soil, the acid metal salt that comprises 0.5～30 weight unit, and the basic metal of 0.5～60 weight unit or the basic cpd of alkaline-earth metal.
6. the heavy metal stable components chemical drug agent for the treatment of mud or soil as claimed in claim 5, it is characterized in that, above-mentioned acid metal salt is the metal salt powder of at least a kind or the 15～35wt% aqueous solution of selecting from iron(ic) chloride, iron nitrate, ferric sulfate, zinc chloride, zinc sulfate, cupric chloride, cupric nitrate, copper sulfate, Manganous chloride tetrahydrate, manganous sulfate, aluminum chloride, Tai-Ace S 150.
7. the heavy metal stable components chemical drug agent for the treatment of mud or soil as claimed in claim 5, it is characterized in that, the basic cpd of above-mentioned basic metal or alkaline-earth metal is the powder of at least a kind of selecting from calcium oxide, calcium hydroxide, Calucium Silicate powder, magnesium oxide, magnesium hydroxide, sodium hydroxide, water glass, potassium hydroxide, potassium silicate, ironmaking slag and cement.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123467.0A CN104098237A (en) | 2013-04-10 | 2013-04-10 | Sludge or soil treatment method and heavy metal component stabilizing agent |
| TW103112197A TW201439012A (en) | 2013-04-10 | 2014-04-01 | Sludge or soil treatment method and heavy metal content stabilization agent |
| PCT/CN2014/075040 WO2014166400A1 (en) | 2013-04-10 | 2014-04-10 | Sludge or soil treatment method and heavy metal content stabilization agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310123467.0A CN104098237A (en) | 2013-04-10 | 2013-04-10 | Sludge or soil treatment method and heavy metal component stabilizing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104098237A true CN104098237A (en) | 2014-10-15 |
Family
ID=51666833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310123467.0A Pending CN104098237A (en) | 2013-04-10 | 2013-04-10 | Sludge or soil treatment method and heavy metal component stabilizing agent |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104098237A (en) |
| TW (1) | TW201439012A (en) |
| WO (1) | WO2014166400A1 (en) |
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| CN104399741A (en) * | 2014-10-22 | 2015-03-11 | 华南农业大学 | Method for fixing soil heavy metals so as to protect groundwater |
| CN104650921A (en) * | 2015-02-04 | 2015-05-27 | 湖南有色金属研究院 | Restoration agent for lowering cadmium/lead effective state content in soil, and use method and application thereof |
| CN104774619A (en) * | 2015-02-13 | 2015-07-15 | 湖南永清环保研究院有限责任公司 | Immobilizing and stabilizing agent for arsenic-contaminated soil and application thereof |
| CN105855276A (en) * | 2015-01-22 | 2016-08-17 | 郭信麟 | Treatment method for removing and stabilizing heavy metals in soil and repair agent |
| CN106010544A (en) * | 2016-06-06 | 2016-10-12 | 福建省农业科学院土壤肥料研究所 | Reducing aluminum-containing composite heavy metal passivation agent and use method thereof |
| CN106064171A (en) * | 2016-05-18 | 2016-11-02 | 高鹏 | Greasy filth improvement is method and the formula thereof of soil |
| CN106281341A (en) * | 2015-05-18 | 2017-01-04 | 南京凯杰环境技术有限公司 | A kind of heavy metal-polluted soil high-efficiency cleaning processes material |
| CN107010800A (en) * | 2016-12-19 | 2017-08-04 | 北京矿冶研究总院 | Chemical stabilizing agent and chemical stabilizing method for arsenic and selenium in lead-zinc smelting wastewater treatment sludge |
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|---|---|---|---|---|
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201439012A (en) | 2014-10-16 |
| WO2014166400A1 (en) | 2014-10-16 |
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