CN107305012A - A kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater - Google Patents
A kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater Download PDFInfo
- Publication number
- CN107305012A CN107305012A CN201610249521.XA CN201610249521A CN107305012A CN 107305012 A CN107305012 A CN 107305012A CN 201610249521 A CN201610249521 A CN 201610249521A CN 107305012 A CN107305012 A CN 107305012A
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- Prior art keywords
- salt wastewater
- industry
- harmless treatment
- salt
- chemical fertilizer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/10—Liquid waste
- F23G2209/101—Waste liquor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50213—Preheating processes other than drying or pyrolysis
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses a kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, belong to dangerous waste harmless environmental protection field, it is simple for process, with preferable prospects for commercial application.
Description
Technical field
The present invention relates to a kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, belong to dangerous waste harmless environmental protection field.
Background technology
Usual high-salt wastewater refers to contain organic matter and at least total dissolved solidss（TDS）Mass fraction be more than 3.5% waste water.Because in this kind of waste water, except containing organic pollution, the also inorganic salts containing great amount of soluble, such as Cl-、Na+、SO4 2-、Ca2+, this kind of waste water is usually the limit of biochemical treatment.Current treatment method for high-salinity wastewater mainly has biochemical treatment process, evaporation concentration method and multiple-effect distillation etc..With the progress and development of biochemical technology, being successfully separated, cultivate of salt tolerant Halophiles, tame and to handle dense salt waste water using biochemical method, in particular with salt tolerant Halophiles kind, using materialization-biochemistry coupling technique technology, the engineering of dense salt wastewater treatment is more promoted.The development of biochemical technology, although improve the environmental suitability of strain, can reduce the COD contents in dense salt waste water.But, because the environmental suitability of salt tolerant Halophiles has certain limit, still there is substantial amounts of dense salt waste water to face the problem effectively handled.Only the COD in dense salt waste water is removed, while by the soluble salts substances separating treatment of strong brine, being only the final disposal target of dense salt waste water.Therefore, it is proposed that " strong brine low-grade utility-evaporate-crystallization technique " such waste water of technical finesse.However, final result is not to obtain the desired result-Nacl of the technology and reuse fresh water.Because the salts substances in waste water are generally villaumite, the solubility in water is especially big, using the method for crystallising of concentration, cooling, salts substances can not be efficiently separated out at all, it is impossible to realize the harmlessness disposing of high-salt wastewater.
Based on this, the present invention proposes a kind of harmless treatment coal chemical industry, the method new approaches of chemical fertilizer and pesticide industry high-salt wastewater, high-salt wastewater is placed in electric furnace or combustion furnace, control heating rate first is heated to material, when material is in molten condition, the oxygen-enriched combusting that oxidizing gas carries out organic pollution etc. is blasted into molten bath by spray gun, realize the harmless treatment of organic pollution etc. in high-salt wastewater, pass through silica, alundum (Al2O3), calcium oxide, calcium carbonate, flyash or two kinds and a variety of mixtures are solidified heavy metal in salt, and produced will be rich in HCl, NOX、SOXThe purified processing of the flue gas of noxious material, finally realizes the harmlessness disposing of fertilizer industry high-salt wastewater, and institute's invented technology is simple to operate, with preferable prospects for commercial application.
The content of the invention
The present invention is achieved through the following technical solutions：
（1）Coal chemical industry, chemical fertilizer and the organic high-salt wastewater of pesticide industry are inserted and heat temperature raising carried out in electric furnace or combustion furnace, specific heating is set to：5 DEG C -40 DEG C/min of heating rate is warming up to 1150-1500 DEG C, is incubated 20-120 min at this temperature thereafter；
（2）After material is fully melted, the oxygen-enriched combusting that the oxidizing gas such as air and oxygen carry out organic pollution etc. in high-salt wastewater is blasted into molten bath, and the solidification that a certain amount of silica, alundum (Al2O3), calcium oxide, calcium carbonate, flyash or two kinds and a variety of mixtures carry out heavy metal in salt is added into molten bath, wherein hold time as 20-120min, addition is 0.1-1.8 times of high-salt wastewater quality；
（3）Burning discharges HCl, NOX, SOXIt is discharged into air, electric furnace or combustion furnace to melt after abraum salt is poured out after the purified processing of flue gas of noxious material and is then changed into nontoxic solid waste.
The step（1）In the organic high-salt wastewater COD contents of fertilizer industry be more than 400 ppm；
The step（2）In oxidizing gas blast pressure for 0.01-4.0MPa.
The characteristics of present invention is readily burned gasification using organic pollution in high-salt wastewater, a kind of method for proposing harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, to realize the harmlessness disposing of coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, the device have the advantages that being with advantage：
（1）The characteristics of being readily burned gasification using organic pollution in coal chemical industry, chemical fertilizer and pesticide industry, proposes that combustion method carries out harmless treatment to it, method is wide using scope, and technological process is short, and operation is simple, with larger prospects for commercial application；
（2）Silica, alundum (Al2O3), calcium oxide, calcium carbonate, flyash or two kinds and a variety of mixtures are added, heavy metal salt in high-salt wastewater is transformed into silicate, stabilizes it solidification, substantially reduce its leachability.
Brief description of the drawings
Figure
1
It is the process chart of the present invention.
Embodiment
The substantive content of the present invention is further illustrated with example below, but present disclosure is not limited to this.
Embodiment
1
By 400 Kg fertilizer industry high-salt wastewaters（The ppm of COD contents 10000）It is placed in electric furnace, it is warming up to 15 DEG C/min of electric furnace after 1450 DEG C, spray gun is inserted in molten bath and blasts oxygen, oxygen blasts pressure for 0.3 MPa, the burning of organic matter in abraum salt is carried out, and 1.2 times of silica are added into molten bath, after 60 min of insulation, melting abraum salt is dumped into tundish transfer, produced HCl, NOX, SOXAir is discharged into after the purified processing of flue gas of noxious material, abraum salt COD contents are 30mg/L after melt-combustion processing after testing, reach that abraum salt discharges content of organics standard, and abraum salt is not leached substantially.
Embodiment
2
By 600 Kg coal chemical industry high-salt wastewaters（The ppm of COD contents 8746）It is placed in combustion furnace, 25 DEG C/min is warming up to after 1500 DEG C, spray gun is inserted in molten bath and blasts air, oxygen blasts pressure for 0.6 MPa, the burning of organic matter in abraum salt is carried out, and 1.4 times of alundum (Al2O3)s are added into molten bath, after 70 min of insulation, melting abraum salt is dumped into tundish transfer, produced HCl, NOX, SOXAir is discharged into after the purified processing of flue gas of noxious material, abraum salt COD contents are 15 mg/L after melt-combustion processing after testing, reach that abraum salt discharges content of organics standard, and abraum salt is not leached substantially.
Embodiment
3
By 400 Kg pesticide industry high-salt wastewaters（The ppm of COD contents 895）It is placed in electric furnace, it is warming up to 35 DEG C/min of electric furnace after 1400 DEG C, spray gun is inserted in molten bath and blasts oxygen, oxygen blasts pressure for 0.7 MPa, the burning of organic matter in abraum salt is carried out, and 1.0 times of calcium oxide and silica mixture are added into molten bath, after 90 min of insulation, melting abraum salt is dumped into tundish transfer, produced HCl, NOX, SOXAir is discharged into after the purified processing of flue gas of noxious material, abraum salt COD contents are 10mg/L after melt-combustion processing after testing, reach that abraum salt discharges content of organics standard, and abraum salt is not leached substantially.
Claims (6)
1. a kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, it is characterised in that contain following processing step：High-salt wastewater is placed in combustion furnace, heated up first, when material is in molten condition, the oxygen-enriched combusting that oxidizing gas carries out wherein organic matter is blasted into molten bath by spray gun, and a certain amount of silica, alundum (Al2O3), calcium oxide, calcium carbonate, flyash or two kinds and a variety of mixtures are added, it is produced to be rich in NOX、HCl、SOXAir is discharged into after the purified processing of flue gas of noxious material.
2. according to claim 1, a kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, it is characterised in that：Handled coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater organic pollution content are more than 400ppm.
3. according to claim 1, a kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, it is characterised in that：1150 DEG C -1500 DEG C are warming up to for 5 DEG C -40 DEG C/min of heating rate, 20-120min is incubated at such a temperature thereafter.
4. according to claim 1, a kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, it is characterised in that：Be passed through oxidizing gas is the mixed gas of air, oxygen or both, blasts pressure for 0.01-4.0MPa.
5. according to claim 1, a kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, it is characterised in that：A certain amount of silica, alundum (Al2O3), calcium oxide, calcium carbonate, flyash or two kinds and a variety of mixtures are added in combustion process into fuse salt, addition is 0.1-1.8 times of high-salt wastewater quality.
6. according to claim 1, a kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater, it is characterised in that：It is produced to be rich in NOX、HCl、SOXAir is discharged into again after the purified processing of flue gas of noxious material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249521.XA CN107305012A (en) | 2016-04-21 | 2016-04-21 | A kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater |
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| CN201610249521.XA CN107305012A (en) | 2016-04-21 | 2016-04-21 | A kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater |
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| CN107305012A true CN107305012A (en) | 2017-10-31 |
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| CN201610249521.XA Pending CN107305012A (en) | 2016-04-21 | 2016-04-21 | A kind of method of harmless treatment coal chemical industry, chemical fertilizer and pesticide industry high-salt wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368952A (en) * | 2018-09-21 | 2019-02-22 | 浙江金泰莱环保科技有限公司 | A kind of method of heavy metal sewage sludge and the innoxious cooperative disposal of organosilicon waste |
| CN109647857A (en) * | 2018-12-25 | 2019-04-19 | 河海大学 | A kind of processing method of industrial waste salt |
| CN111085529A (en) * | 2019-12-31 | 2020-05-01 | 清大国华环境集团股份有限公司 | Industrial waste salt vitrification method |
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| JPS633299A (en) * | 1986-06-23 | 1988-01-08 | 三機工業株式会社 | Microwave melting solidifying method of liquid waste |
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| CN1112662A (en) * | 1994-03-10 | 1995-11-29 | 株式会社荏原制作所 | Method of and apparatus for fluidized-bed gasification and melt combustion |
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| CN1589382A (en) * | 2001-04-16 | 2005-03-02 | 米内吉有限公司 | Closed cycle waste combustion |
| CN201421096Y (en) * | 2009-05-20 | 2010-03-10 | 河南科技大学 | Swirl-melting furnace for waste incineration fly ash |
| CN102679361A (en) * | 2012-05-08 | 2012-09-19 | 北京航天动力研究所 | Sulfur-containing and salt-containing organic waste liquid and waste gas pollution-free treatment device and method |
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2016
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| JPS633299A (en) * | 1986-06-23 | 1988-01-08 | 三機工業株式会社 | Microwave melting solidifying method of liquid waste |
| CN1074525A (en) * | 1991-10-01 | 1993-07-21 | 海洋页岩加工股份有限公司 | Harmful waste is become the method and apparatus of harmless agglomerate |
| CN1116828A (en) * | 1993-06-29 | 1996-02-14 | 美国铝公司 | Waste management facility |
| CN1112662A (en) * | 1994-03-10 | 1995-11-29 | 株式会社荏原制作所 | Method of and apparatus for fluidized-bed gasification and melt combustion |
| CN1589382A (en) * | 2001-04-16 | 2005-03-02 | 米内吉有限公司 | Closed cycle waste combustion |
| CN201421096Y (en) * | 2009-05-20 | 2010-03-10 | 河南科技大学 | Swirl-melting furnace for waste incineration fly ash |
| CN102679361A (en) * | 2012-05-08 | 2012-09-19 | 北京航天动力研究所 | Sulfur-containing and salt-containing organic waste liquid and waste gas pollution-free treatment device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368952A (en) * | 2018-09-21 | 2019-02-22 | 浙江金泰莱环保科技有限公司 | A kind of method of heavy metal sewage sludge and the innoxious cooperative disposal of organosilicon waste |
| CN109647857A (en) * | 2018-12-25 | 2019-04-19 | 河海大学 | A kind of processing method of industrial waste salt |
| CN111085529A (en) * | 2019-12-31 | 2020-05-01 | 清大国华环境集团股份有限公司 | Industrial waste salt vitrification method |
| CN111085529B (en) * | 2019-12-31 | 2021-12-28 | 清大国华环境集团股份有限公司 | Industrial waste salt vitrification method |
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Application publication date: 20171031 |