CN103274670B - Preparation method of light porous low-toxicity chemical sludge-based filler - Google Patents
Preparation method of light porous low-toxicity chemical sludge-based filler Download PDFInfo
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- CN103274670B CN103274670B CN201310241456.2A CN201310241456A CN103274670B CN 103274670 B CN103274670 B CN 103274670B CN 201310241456 A CN201310241456 A CN 201310241456A CN 103274670 B CN103274670 B CN 103274670B
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- chemical engineering
- heavy metal
- engineering sludge
- weight parts
- based filler
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- 239000010802 sludge Substances 0.000 title claims abstract description 52
- 239000000945 filler Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 231100000053 low toxicity Toxicity 0.000 title claims abstract description 5
- 239000000126 substance Substances 0.000 title abstract description 5
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000003381 stabilizer Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004927 clay Substances 0.000 claims abstract description 5
- 238000003889 chemical engineering Methods 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 10
- 238000010792 warming Methods 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000010903 husk Substances 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000002386 leaching Methods 0.000 abstract description 14
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 9
- 241000209094 Oryza Species 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 4
- 239000010842 industrial wastewater Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- -1 2 parts Chemical compound 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a preparation method of a light porous low-toxicity chemical sludge-based filler. The chemical sludge incineration ash is used as a raw material, clay or shale is used as an auxiliary material, a small amount of lignocellulose, an inorganic pore-forming agent and a heavy metal stabilizer are blended, mixed according to a certain proportion, stirred by adding water, granulated and roasted to prepare the filler with small bulk density, developed pores and low heavy metal leaching rate. Compared with the conventional chemical sludge treatment and disposal mode, the invention has the advantages of low operation cost, less secondary pollution, high resource degree and the like.
Description
Technical field
The invention belongs to solid waste disposal and resource utilization field, relate to a kind of preparation method of chemical engineering sludge based filler of light porous low toxicity.
Background technology
Chemical engineering sludge water ratio is high, volume large, complicated component, and contains pollutent and the heavy metal etc. of multiple poisonous and harmful, difficult degradation, according to " national Hazardous Waste List " regulation of up-to-date promulgation, belongs to dangerous solid waste.Existing chemical engineering sludge disposal options be mainly Fen Shao ?security landfill, but this method disposal costs costliness, disposing capacity wretched insufficiency, a large amount of chemical engineering sludges is illegally shifted, is toppled over, and ecotope and human health have been caused to great harm.
Mud is prepared the safe disposal that filler is chemical engineering sludge provides new thinking, but the addition of general sludge resource metallization processes dewatered sludge is only 30% left and right, and the useless rate of profit is low, and is seldom that raw material is prepared filler with belonging to the useless chemical industry excess sludge of danger.Mostly adopt dewatered sludge to prepare filler etc. as raw material, but contain various heavy in mud, as do not realized well the stabilization of Heavy Metals in Sludge, filler in use its heavy metal is easy to stripping, enters ecotope, produces secondary pollution problem.
In addition, filler need to have the feature of lightweight, and the filler tap density of existing recycling sludge research preparation is larger, and hole is undeveloped.In the time that this kind of filler is used as to water treatment filler, can not hold back well pollutent, be also difficult to bio-film colonization, therefore its water treatment effect is subject to great restriction.Part sludge media, in the process of preparation, uses aluminium powder as whipping agent, has greatly increased the preparation cost of filler, is unfavorable for the industrial application of technique.
Therefore, in recycling sludge process, if can improve the useless rate of the profit of mud, in preparation process, can realize satisfactory stability to heavy metal, improve the porosity of filler simultaneously, make its treating processes that can be used for trade effluent, will significantly improve the application value of technique.
Summary of the invention
The present invention is directed to the useless rate of profit that existing sludge resource metallization processes exists low, be difficult to effective stabilization heavy metal, the defect such as the undeveloped or preparation cost of hole after preparation is high, invent employing chemical engineering sludge incineration residue, add heavy metal stabilizer, and fully utilize the materials such as stalk, rice husk and wood chip, make the sludge based filler that can be used for Industrial Wastewater Treatment.Concrete summary of the invention is as follows:
A. chemical engineering sludge incineration residue, heavy metal stabilizer and auxiliary material grind, and cross 100 mesh sieves; Lignocellulose is pulverized, and crosses 40 mesh sieves.
B. get chemical engineering sludge incineration residue 30～50 weight parts, lignocellulose 2～6 weight parts, inorganic pore-forming material 2～6 weight parts, heavy metal stabilizer 2～6 weight parts, auxiliary material 40～56 weight parts; After siccative mixes, add water and fully stir, granulation after stirring, makes raw material ball.
C. raw material ball is the baking oven inner drying 50～70min of 95～115 DEG C prior to temperature; Move in retort furnace again, be warming up to 300～400 DEG C, temperature rise rate is 15～20 DEG C/min, and soaking time is 20～40min, then with the temperature rise rate of 18～22 DEG C/min, is warming up to gradually 1050～1150 DEG C of maturing temperatures, keeps 5～25min; After roasting, naturally cool to room temperature, make chemical engineering sludge based filler.
Described lignocellulose is selected from one or more in wood chip, stalk, rice husk; Described inorganic pore-forming material is selected from one or more in calcium carbonate, salt of wormwood, sodium carbonate; Described heavy metal stabilizer is selected from as one or more in zeolite, wilkinite, titanium gypsum; Described auxiliary material is selected from as one or more in clay or shale.
The chemical engineering sludge of chemical engineering sludge incineration residue of the present invention mummification obtains through 600 DEG C of burnings.
Advantage of the present invention
1, adopt chemical engineering sludge incineration residue to prepare filler, improved the useless rate of profit in resource utilization process;
2, by adding heavy metal stabilizer, realized effective stabilization of heavy metal;
3, add stalk, rice husk, wood chip the like waste, not only reduced the cost of preparation, and make the chemical engineering sludge based filler tap density of preparation little, hole is flourishing, leaching rate of heavy metals is little, can be used for During Industrial Wastewater Treatment Process, make it derive from wastewater treatment, be back to Industrial Wastewater Treatment.
Embodiment
Embodiment 1
The formula of the present embodiment is: 30 parts of chemical engineering sludge incineration residues, 6 parts of wood chips, 6 parts, calcium carbonate, 2 parts, zeolite, 56 parts of clays.The Leaching of Heavy Metals concentration of the present embodiment chemical engineering sludge incineration residue used is in table 1.
Table 1 chemical engineering sludge incineration residue leaching experiment result
Before batching, chemical engineering sludge incineration residue, zeolite and clay grind, and cross 100 mesh sieves; Wood chip is pulverized, and crosses 40 mesh sieves.After siccative mixes, add water and fully stir, granulation after stirring, makes raw material ball.Raw material ball is the baking oven inner drying 70min of 95 DEG C prior to temperature; Move in retort furnace again, be warming up to 300 DEG C, temperature rise rate is 15 DEG C/min, and soaking time is 40min, then with the temperature rise rate of 18 DEG C/min, is warming up to gradually 1050 DEG C of maturing temperatures, keeps 25min; After roasting, naturally cool to room temperature, make chemical engineering sludge based filler.
Carrier performance prepared by embodiment 1 is in table 2.
Table 2 chemical engineering sludge based filler performance
Filler prepared by embodiment 1 does Leaching of Heavy Metals experiment, and it the results are shown in Table 3.
Table 3 chemical engineering sludge based filler leaching experiment result
Embodiment 2
The formula of the present embodiment is: 40 parts of chemical engineering sludge incineration residues, 4 parts of stalks, 4 parts, salt of wormwood, 4 parts of wilkinites, 48 parts, shale.The Leaching of Heavy Metals concentration of the present embodiment chemical engineering sludge incineration residue used is in table 4.
Table 4 chemical engineering sludge incineration residue leaching experiment result
Before batching, chemical engineering sludge incineration residue, wilkinite and shale grind, and cross 100 mesh sieves; Crushed stalk, crosses 40 mesh sieves.After siccative mixes, add water and fully stir, granulation after stirring, makes raw material ball.Raw material ball is the baking oven inner drying 60min of 105 DEG C prior to temperature; Move in retort furnace again, be warming up to 350 DEG C, temperature rise rate is 18 DEG C/min, and soaking time is 30min, then with the temperature rise rate of 20 DEG C/min, is warming up to gradually 1100 DEG C of maturing temperatures, keeps 15min; After roasting, naturally cool to room temperature, make chemical engineering sludge based filler.
Carrier performance prepared by embodiment 2 is in table 5.
Table 5 chemical engineering sludge based filler performance
Filler prepared by embodiment 2 does Leaching of Heavy Metals experiment, and it the results are shown in Table 6.
Table 6 chemical engineering sludge based filler leaching experiment result
Embodiment 3
The formula of the present embodiment is: 50 parts of chemical engineering sludge incineration residues, 2 parts, rice husk, 2 parts, sodium carbonate, 6 parts, titanium gypsum, 40 parts of clays.The Leaching of Heavy Metals concentration of the present embodiment chemical engineering sludge incineration residue used is in table 7.
Table 7 chemical engineering sludge incineration residue leaching experiment result
Before batching, chemical engineering sludge incineration residue, titanium gypsum and clay grind, and cross 100 mesh sieves; Rice husk is pulverized, and crosses 40 mesh sieves.After siccative mixes, add water and fully stir, granulation after stirring, makes raw material ball.Raw material ball is the baking oven inner drying 50min of 115 DEG C prior to temperature; Move in retort furnace again, be warming up to 400 DEG C, temperature rise rate is 20 DEG C/min, and soaking time is 20min, then with the temperature rise rate of 22 DEG C/min, is warming up to gradually 1150 DEG C of maturing temperatures, keeps 5min; After roasting, naturally cool to room temperature, make chemical engineering sludge based filler.
Carrier performance prepared by embodiment 3 is in table 8.
Table 8 chemical engineering sludge based filler performance
Filler prepared by embodiment 3 does Leaching of Heavy Metals experiment, and it the results are shown in Table 9.
Table 9 chemical engineering sludge based filler leaching experiment result
。
Claims (1)
1. a preparation method for the chemical engineering sludge based filler of light porous low toxicity, is characterized in that:
A. chemical engineering sludge incineration residue, heavy metal stabilizer and auxiliary material grind, and cross 100 mesh sieves; Lignocellulose is pulverized, and crosses 40 mesh sieves; Wherein, described heavy metal stabilizer is selected from as one or more in zeolite, wilkinite, titanium gypsum; Described lignocellulose is selected from one or more in wood chip, stalk, rice husk; Described auxiliary material is selected from as one or more in clay or shale;
B. get chemical engineering sludge incineration residue 30 ~ 50 weight parts, lignocellulose 2 ~ 6 weight parts, inorganic pore-forming material 2 ~ 6 weight parts, heavy metal stabilizer 2 ~ 6 weight parts, auxiliary material 40 ~ 56 weight parts; After siccative mixes, add water and fully stir, granulation after stirring, makes raw material ball; Described inorganic pore-forming material is selected from one or more in calcium carbonate, salt of wormwood, sodium carbonate;
C. raw material ball is baking oven inner drying 50 ~ 70 min of 95 ~ 115 DEG C prior to temperature; Move in retort furnace again, be warming up to 300 ~ 400 DEG C, temperature rise rate is 15 ~ 20 DEG C/min, and soaking time is 20 ~ 40min, then with the temperature rise rate of 18 ~ 22 DEG C/min, is warming up to gradually 1050 ~ 1150 DEG C of maturing temperatures, keeps 5 ~ 25 min; After roasting, naturally cool to room temperature, make chemical engineering sludge based filler.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310241456.2A CN103274670B (en) | 2013-06-09 | 2013-06-18 | Preparation method of light porous low-toxicity chemical sludge-based filler |
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| CN201310229511 | 2013-06-09 | ||
| CN201310229511.6 | 2013-06-09 | ||
| CN201310241456.2A CN103274670B (en) | 2013-06-09 | 2013-06-18 | Preparation method of light porous low-toxicity chemical sludge-based filler |
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| CN103274670B true CN103274670B (en) | 2014-11-12 |
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| CN105414163B (en) * | 2015-11-09 | 2019-08-02 | 四川龙蟒钛业股份有限公司 | A kind of method of cadmium pollution soil repair |
| CN105924220B (en) * | 2016-04-12 | 2018-11-13 | 南京工业大学 | Process for preparing filler by doping composite stabilizer into chemical sludge incineration ash |
| CN108409297A (en) * | 2018-05-17 | 2018-08-17 | 南京信息工程大学 | With the method for grease-decolor roach and preparing filler by chemical sludge burning ash |
| CN109467443A (en) * | 2019-01-15 | 2019-03-15 | 宜昌光大陶粒制品有限责任公司 | A kind of preparation method of sludge regeneration haydite |
| CN109867450B (en) * | 2019-03-30 | 2022-04-22 | 肇庆市珈旺环境技术研究院 | Sludge incineration ash cement and preparation and application thereof |
| CN114988561A (en) * | 2022-06-30 | 2022-09-02 | 江西全兴化工填料有限公司 | Method for coating and modifying surface of chemical sludge-based filler |
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