CN104118927A - Method and system for processing waste liquid - Google Patents

Method and system for processing waste liquid Download PDF

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Publication number
CN104118927A
CN104118927A CN201310143204.6A CN201310143204A CN104118927A CN 104118927 A CN104118927 A CN 104118927A CN 201310143204 A CN201310143204 A CN 201310143204A CN 104118927 A CN104118927 A CN 104118927A
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China
Prior art keywords
flue gas
incinerator
waste liquid
burning
gas
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CN201310143204.6A
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Chinese (zh)
Inventor
娄长征
李东凯
李凤舞
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TONGLIAO MEIHUA BIOTECHNOLOGY CO Ltd
XINJIANG MEIHUA AMINO ACID CO Ltd
Original Assignee
TONGLIAO MEIHUA BIOTECHNOLOGY CO Ltd
XINJIANG MEIHUA AMINO ACID CO Ltd
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Application filed by TONGLIAO MEIHUA BIOTECHNOLOGY CO Ltd, XINJIANG MEIHUA AMINO ACID CO Ltd filed Critical TONGLIAO MEIHUA BIOTECHNOLOGY CO Ltd
Priority to CN201310143204.6A priority Critical patent/CN104118927A/en
Publication of CN104118927A publication Critical patent/CN104118927A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method and a system for processing a waste liquid. The method for processing a waste liquid comprises: contacting the waste liquid with a basic oxide to obtain a precipitate and a supernatant; burning the precipitate and the supernatant to obtain a salt and flue gas; and collecting the flue gas. The method for processing the waste liquid is capable of effectively processing waste liquids, and has the advantages of low cost, simple technology, high processing efficiency, no pollution to environment, high comprehensive utilization benefit and the like.

Description

The method and system disposing waste liquid
Technical field
The present invention relates to the method and system for the treatment of waste liquid.
Background technology
In Industrial processes, can produce a large amount of waste liquids, general biochemistry or the physical method of adopting processed, but for some industrial effluent, high concentrated organic wastewater for example, because its chemical oxygen demand (COD) (Chemical Oxygen Demand, COD) is even up to a million up to tens0000, and contain a large amount of materials such as salt, traditional liquid waste disposal technique is difficult to this be suitable for, and exists that cost is high, the problem such as complex process, processing efficiency are low, contaminate environment, comprehensive utilization benefit are low.
Therefore, the current processing means about waste liquid still have much room for improvement.
In prior art, industrial effluent generally adopts biochemistry or physical method to process, but industrial effluent often contains the impurity such as gas chromatography, dust, salt, complicated component, if directly use biochemistry or physical method, these impurity will form interference, greatly reduce treatment effect.In addition on the one hand; in waste liquid, there is a large amount of organic substances; as: residual sugar, protein and amino acids etc. all belong to the material that incendivity discharges heat energy; in waste liquid, also contain a large amount of salts; these organic substances and salt, if rationally recycling had both been conducive to conservation of nature environment, are conducive to again create economic worth; but there is no in fact at present the technique means effectively disposing waste liquid can address the above problem.The present inventor is surprised to find, and by technical scheme of the present invention, can effectively solve for example above-mentioned technical problem.Following part is described the feature and advantage of technical solution of the present invention being done further.
In one aspect of the invention, the present invention proposes a kind of method disposing waste liquid.According to the embodiment of the present invention, with reference to figure 1, particularly, before burning, in advance waste liquid is carried out to purifying treatment, being about to waste liquid contacts with basic oxide, the salts substances in basic oxide and waste liquid reacts, and generates throw out and the supernatant liquor of saliferous, certainly, in order to increase decontamination effect improving, can also, further by technology such as centrifugal and filtrations, not repeat them here; Burn gained throw out and supernatant liquor, can obtain salt and flue gas; Further regather flue gas, can obtain heat resource.Utilization, according to the method disposing waste liquid of the embodiment of the present invention, can dispose waste liquid effectively, has that cost is low, technique is simple, processing efficiency is high, free from environmental pollution, comprehensive utilization benefit advantages of higher.
According to the embodiment of the present invention, the source of waste liquid, kind and ingredient thereof are not particularly limited.For example, according to some embodiments of the present invention, waste liquid is to produce the waste liquid that amino acid produces.Thus, can effectively process this waste liquid.
According to embodiments of the invention, kind and the usage quantity thereof of basic oxide are not particularly limited.For example, according to some embodiments of the present invention, basic oxide are at least one in calcium oxide, sodium oxide, potassium oxide.Thus, can effectively remove the impurity in waste liquid, and generate salt.In addition, basic oxide low price used, is easy to buy on overall market, thereby is conducive to reduce processing cost.
According to embodiments of the invention, the salt that can effectively prepare is at least one in calcium sulfate, sodium sulfate, potassium sulfate.Thus, in purifying waste, can also create economic worth, improve comprehensive utilization ratio.
According to embodiments of the invention, method and the device of burning are not particularly limited.For example, according to some embodiments of the present invention, with reference to Fig. 1 and 2, burning is set to twice burning.For example according to other embodiment of the present invention, with reference to figure 2, burn for the first time and use rotary kiln again, burn for the second time and use incinerator.Thus, by burn can by the combustiblematerials in waste liquid for example organic substance burn, and can kill harmful microorganism, thereby be conducive to solve the problem that discharge waste liquid pollutes the environment, also generated the byproducts such as salt simultaneously.In addition; because the present invention has also designed twice combustion; improved efficiency of combustion; can discharge more heat; utilize further this heat can obtain larger benefit; and the day output of rotary kiln and incinerator is very large, thereby make treatment process of the present invention be more suitable for industrialization, large-scale production.
According to embodiments of the invention, collect the technique means of flue gas and do not receive special restriction, can be by any known method and apparatus.For example, according to some embodiments of the present invention, utilize boiler to collect flue gas, obtain steam.Thus, boiler can the entrained heat of high efficiency collection flue gas, obtains steam, steam can be applied in to the field of generating, heating, fire-fighting further, obtains good comprehensive benefit.
According to embodiments of the invention, with reference to figure 3, further comprise: at least one that flue gas is carried out in dedusting, washing and absorption processed, the technique means adopting when dedusting, washing and absorption is not particularly limited.According to some embodiments of the present invention, dust removal process is utilized sack cleaner.Thus, can effectively remove dust contained in flue gas, improve processing efficiency.
According to some embodiments of the present invention, with reference to figure 3, carrying out washing treatment is carried out in washing tower, and the pH value of washings is less than 3, and utilizes nozzle to make washings be atomizing state.Thus, can more effectively remove hydrogen fluoride contained in flue gas, hydrogenchloride, hydrogen bromide and dust, be conducive to improve purification efficiency.
According to some embodiments of the present invention, with reference to figure 3, adsorption treatment is carried out in adsorption tower, utilizes nozzle to make adsorption liquid be atomizing state, and adsorption liquid used is alkaline solution, and preferred alkaline solution is sodium hydroxide solution, and the pH value of controlling adsorption liquid is greater than 8.Thus, can high-level efficiency remove contained sulfurous gas, inorganic gas and dust in flue gas, effectively prevent contaminate environment, be conducive to realize harmless emission.
In prior art, waste liquid is mainly used in making organic fertilizer (as techniques such as spray granulating, disc granulations), all have that power consumption is high, product is single, the insoluble problem such as complex process and tail gas pollution physical environment, and technical scheme of the present invention can solve for example above-mentioned technical problem that prior art exists preferably, obtained good technique effect.
In another aspect of the present invention, the present invention proposes a kind of system disposing waste liquid.According to embodiments of the invention, with reference to figure 4, this system comprises alkaline purification device 100, incinerator 200 and smoke gas collecting apparatus 300, alkaline purification device 100 is connected with incinerator 200, incinerator 200 is connected with smoke gas collecting apparatus 300, particularly, in alkaline purification device 100, waste liquid is contacted with basic oxide, after reaction, be precipitated thing and supernatant liquor; In incinerator 200, burn throw out and supernatant liquor, obtain salt and flue gas; Utilize smoke gas collecting apparatus 300 to collect flue gas.Utilization, according to the system disposing waste liquid of the embodiment of the present invention, can dispose waste liquid effectively, has that cost is low, technique is simple, processing efficiency is high, free from environmental pollution, comprehensive utilization benefit advantages of higher.In addition, before for the described feature and advantage of the method disposing waste liquid, also applicable this system natch, repeats no more.
According to embodiments of the invention, with reference to figure 4, the structure of incinerator 200 is not particularly limited.For example, according to some embodiments of the present invention, with reference to Figure 4 and 5, incinerator 200 comprises the first incinerator 210 and the second incinerator 220, the first incinerator 210 is connected with alkaline purification device 100, the second incinerator 220 is connected with the first incinerator 210, and the first incinerator 210 is for burning throw out, to obtain salt, the second incinerator 220 is for burning supernatant liquor, to obtain flue gas.Again for example according to a particular embodiment of the invention, with reference to figure 5, the first incinerators 210, be rotary kiln, the second incinerator 220 is incinerator.Thus, utilize this device effectively to dispose waste liquid, and by twice incinerator can by the combustiblematerials in waste liquid for example organic substance burn, and can kill harmful microorganism, thereby be conducive to solve the problem that discharge waste liquid pollutes the environment, also generate the byproducts such as salt simultaneously, created economic worth.In addition, twice combustion device has improved processing efficiency, can discharge more heat, utilizes further this heat can obtain larger benefit.
According to embodiments of the invention, with reference to figure 6, further comprise at least one in cleaning apparatus 400, washing device 500, adsorption unit 600, cleaning apparatus 400 is connected with smoke gas collecting apparatus 300, for flue gas is carried out to dedusting; Washing device 500 is connected with cleaning apparatus 400, for washing flue gas; And adsorption unit 600 is connected with washing device 500, for flue gas is carried out to adsorption treatment.Thus, further flue, is conducive to realize the technical purpose of harmless emission.
According to embodiments of the invention, with reference to figure 6, device category and the structure of cleaning apparatus 400, washing device 500, adsorption unit 600 are not particularly limited.For example, according to some embodiments of the present invention, cleaning apparatus 400 is sack cleaner; Washing device 500 is washing tower; And adsorption unit 600 is washing tower.Thus, can further effectively remove impurity contained in flue gas, improve processing efficiency, thereby effectively prevent contaminate environment.
Below by specific embodiment, the present invention will be described, it should be noted that these embodiment are only used to illustration purpose, and can not be construed to by any way limitation of the present invention.In addition, in the following example, if not otherwise specified, the equipment that adopted and material are commercially available.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, the object of the invention is to propose a kind of method and system that can effectively dispose waste liquid.
In one aspect of the invention, the present invention proposes a kind of method disposing waste liquid.According to the embodiment of the present invention, described method comprises: described waste liquid is contacted with basic oxide, to be precipitated thing and supernatant liquor; Burn described throw out and described supernatant liquor, to obtain salt and flue gas; And collect described flue gas.Utilization, according to the method disposing waste liquid of the embodiment of the present invention, can dispose waste liquid effectively, has that cost is low, technique is simple, processing efficiency is high, free from environmental pollution, comprehensive utilization benefit advantages of higher.
According to some embodiments of the present invention, the above-mentioned method disposing waste liquid can also have following additional technical feature:
According to embodiments of the invention, the waste liquid that described waste liquid produces for producing amino acid.Thus, can effectively process this waste liquid.
According to embodiments of the invention, described basic oxide are at least one in calcium oxide, sodium oxide, potassium oxide.Thus, can effectively remove the impurity in waste liquid, and generate salt.In addition, basic oxide low price used, is easy to buy from the market, thereby is conducive to reduce processing cost.
According to embodiments of the invention, described salt is at least one in calcium sulfate, sodium sulfate, potassium sulfate.Thus, in purifying waste, can also create economic worth, improve comprehensive utilization ratio.
According to embodiments of the invention, described burning comprises: once burn, for burning described throw out, and obtain described salt; And secondary burning, for burning described supernatant liquor, and obtain described flue gas.Thus, by burn can by the combustiblematerials in waste liquid for example organic substance burn, and can kill harmful microorganism, thereby be conducive to solve the problem that discharge waste liquid pollutes the environment, also generated the byproducts such as salt simultaneously.In addition, the present invention has also designed twice combustion, thereby is conducive to improve processing efficiency, and can discharge more heat, utilizes further this heat can obtain larger benefit.
According to embodiments of the invention, described once burning for to burn the mixture of described throw out and auxiliary fuel in rotary kiln, and wherein, described auxiliary fuel is coal, and the temperature of burning is 850~900 degrees Celsius.Thus, can effectively burn this mixture, and owing to containing oxidizer in mixture, improve firing efficiency, thereby be conducive to reduce, burn required energy expenditure, further be conducive to reduce processing cost.In addition, the day output of rotary kiln is very large, thereby makes treatment process of the present invention be more suitable for industrialization, large-scale production.
According to embodiments of the invention, described secondary burning for to carry out in incinerator, under combustion-supporting gas and air mixed atmosphere, wherein, described supernatant liquor is atomizing state, the temperature of described secondary burning is 1050~1100 degrees Celsius, described combustion-supporting gas is Sweet natural gas, and preferred described Sweet natural gas is methane.Owing to carrying out under combustion-supporting gas and air mixed atmosphere, can improve firing efficiency, be conducive to reduce and burn required energy expenditure, further reduced processing cost.In addition, the day output of incinerator is large, is applicable to large-scale production.
According to embodiments of the invention, utilize boiler to collect described flue gas, to obtain steam.Thus, boiler can be collected the entrained heat of flue gas expeditiously, can obtain steam thus, steam can be applied in to the field of generating, heating, fire-fighting further, thereby obtain good comprehensive benefit.
According to embodiments of the invention, further comprise: described flue gas is carried out at least one processing in dedusting, washing and absorption.Thus, can more effectively remove the impurity in flue gas, be conducive to environment protection.
According to embodiments of the invention, described dust removal process for to carry out, to remove the dust in described flue gas in sack cleaner.Thus, can effectively remove dust contained in flue gas, and improve processing efficiency.
According to embodiments of the invention, described carrying out washing treatment is carried out in washing tower, and to remove hydrogen fluoride, hydrogenchloride, hydrogen bromide and the dust in described flue gas, wherein, washings is atomizing state, and the pH value of described washings is less than 3.Thus, can effectively remove hydrogen fluoride contained in flue gas, hydrogenchloride, hydrogen bromide and dust, further be conducive to improve purifying treatment efficiency.
According to embodiments of the invention, described adsorption treatment is carried out in adsorption tower, to remove sulfurous gas, inorganic gas and the dust in described flue gas, wherein, adsorption liquid is atomizing state, described adsorption liquid is alkaline solution, and preferred described alkaline solution is sodium hydroxide solution, and the pH value of described adsorption liquid is greater than 8.Thus, can effectively remove sulfurous gas contained in flue gas, inorganic gas and dust, improve processing efficiency, can effectively prevent contaminate environment.
In another aspect of the present invention, the present invention proposes a kind of system for the treatment of waste liquid.According to embodiments of the invention, described system comprises: alkaline purification device, for described waste liquid is contacted with basic oxide, to be precipitated thing and supernatant liquor; Incinerator, described incinerator is connected with described alkaline purification device, for burning described throw out and described supernatant liquor, to obtain salt and flue gas; And smoke gas collecting apparatus, described smoke gas collecting apparatus is connected with described incinerator, for collecting described flue gas.Utilization, according to the system disposing waste liquid of the embodiment of the present invention, can dispose waste liquid effectively, has that cost is low, technique is simple, processing efficiency is high, free from environmental pollution, comprehensive utilization benefit advantages of higher.
According to some embodiments of the present invention, the above-mentioned system disposing waste liquid can also have following additional technical feature:
According to embodiments of the invention, described incinerator comprises: the first incinerator, and described the first incinerator is connected with described alkaline purification device, and for burning described throw out, to obtain described salt, described the first incinerator is rotary kiln; And second incinerator, described the second incinerator is connected with described the first incinerator, and for burning described supernatant liquor, to obtain described flue gas, described the second incinerator is incinerator.Thus, utilize this device effectively to dispose waste liquid, and by twice incinerator can by the combustiblematerials in waste liquid for example organic substance burn, and can kill harmful microorganism, thereby be conducive to solve the problem that discharge waste liquid pollutes the environment, also generate the byproducts such as salt simultaneously, created economic worth.In addition, twice combustion device has improved processing efficiency, can discharge more heat, utilizes further this heat can obtain larger benefit.
According to embodiments of the invention, further comprise at least one in cleaning apparatus, washing device, adsorption unit, wherein, described cleaning apparatus is connected with described smoke gas collecting apparatus, for described flue gas is carried out to dedusting, described washing device is connected with described cleaning apparatus, for washing described flue gas; And described adsorption unit is connected with described washing device, for described flue gas is carried out to adsorption treatment.Thus, further flue, is conducive to realize the technical purpose of harmless emission.
According to embodiments of the invention, described cleaning apparatus is sack cleaner; Described washing device is washing tower; And described adsorption unit is washing tower.Thus, can further effectively remove impurity contained in flue gas, improve processing efficiency, thereby effectively prevent contaminate environment.
The method and system disposing waste liquid according to an embodiment of the invention can be realized following advantages one of at least:
1, the method and system disposing waste liquid according to an embodiment of the invention, can dispose waste liquid effectively, and has that cost is low, technique is simple, processing efficiency is high, free from environmental pollution, comprehensive utilization benefit advantages of higher;
2, the method and system disposing waste liquid according to an embodiment of the invention, when disposing waste liquid, can also obtain the byproducts such as calcium sulfate, sodium sulfate, sulfuric acid sylvite, product category is abundanter, has created larger economic worth, has improved comprehensive utilization ratio;
3, the method and system disposing waste liquid according to an embodiment of the invention, can obtain a large amount of heat energy, further can utilize that this heat energy generates electricity, heating, fire-fighting etc., obtains comparatively desirable comprehensive benefit;
4, the method and system disposing waste liquid according to an embodiment of the invention, equipment used is conventional equipment, without the equipment of special reaction, thereby makes technical scheme of the present invention be more prone to promotion and application;
5, the method and system disposing waste liquid according to an embodiment of the invention, day output is very large, thereby makes treatment process of the present invention and system be more suitable for industrialization, large-scale production.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the schematic flow sheet of the method that disposes waste liquid according to an embodiment of the invention;
Fig. 2 is the schematic flow sheet of the method disposing waste liquid of another embodiment according to the present invention;
Fig. 3 is the schematic flow sheet of the method disposing waste liquid of another embodiment according to the present invention;
Fig. 4 is the structural representation of the system that disposes waste liquid according to an embodiment of the invention;
Fig. 5 is the structural representation of the system disposing waste liquid of another embodiment according to the present invention;
Fig. 6 is the structural representation of the system disposing waste liquid of another embodiment according to the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " thickness ", " on ", orientation or the position relationship of the indication such as D score be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than indicate or imply that the device of indication or element must have specific orientation, with specific orientation, construct and operation, therefore can not be interpreted as limitation of the present invention.Term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.The term that used in this article " contact " should be interpreted broadly, and it can be any mode that can make at least two kinds of reactant generation chemical reactions, for example, can be that two kinds of reactants are mixed under suitable condition.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
The following discovery of the present invention based on contriver completes:
Embodiment 1
Material: the waste liquid that certain amino acids production factory produces.
With reference to figure 1, main operational steps is as follows:
1) by calcium oxide, the blanking velocity with 1895kg/h mixes at powder liquid jet mixer with the flow of waste liquid with 29.167t/h, stirs, and the salt in waste liquid occurs to react as follows with calcium oxide:
CaO+H 2O+(NH 4) 2SO 4=CaSO 4·2H 2O+2NH 3↑,
Collecting precipitation thing and supernatant liquor, the NH discharging 3by collection tube, enter ammonia buffering storage tank, then squeeze in spray scrubber by blower fan, adopt water to carry out circulation cleaning and absorb ammonia;
2) coal that throw out and softening temperature is greater than to 1100 degrees Celsius mixes with 7.5:1 part by weight, and then at rotary kiln incineration, the burning time is 60~70 minutes, 850 degrees Celsius of incineration temperatures, and pressure-1 millibar, obtains salt and unburning material;
3) by unburning material and supernatant liquor in incinerator, burn under methane and air mixed atmosphere, the burning time was 3 seconds, 1050~1100 degrees Celsius of incineration temperatures, pressure-1 millibar, obtain flue gas, wherein, methane shared volume ratio in mixed gas is 2.28%, utilizes nozzle to make supernatant liquor be atomizing state;
4) utilize boiler to collect flue gas, obtain steam;
5) through the flue gas of boiler, enter sack cleaner and carry out dedusting;
6) flue gas enters in washing tower and washs in a looping fashion, to remove hydrogen fluoride, hydrogenchloride, hydrogen bromide and the dust in flue gas, wherein, utilize nozzle to make washings be atomizing state, washings used is the alkali lye that clear water and part are come from adsorption tower overflow, and the pH value of controlling washings is less than 3.
7) flue gas enters in adsorption tower and adsorbs, and to remove sulfurous gas, inorganic gas and the dust in flue gas, wherein, utilizes nozzle to make adsorption liquid be atomizing state, and adsorption liquid used is sodium hydroxide solution, controls adsorption liquid pH value between 8~10;
8) gas is discharged to the external world.Emission gases through above-mentioned processing reaches GB18484-2001 < < dangerous waste incineration pollution control criterion > > requirement.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.

Claims (16)

1. the method disposing waste liquid, is characterized in that, described method comprises:
Described waste liquid is contacted with basic oxide, to be precipitated thing and supernatant liquor;
Burn described throw out and described supernatant liquor, to obtain salt and flue gas; And
Collect described flue gas.
2. method according to claim 1, is characterized in that, the waste liquid that described waste liquid produces for producing amino acid.
3. method according to claim 1, is characterized in that, described basic oxide are at least one in calcium oxide, sodium oxide, potassium oxide.
4. method according to claim 1, is characterized in that, described salt is at least one in calcium sulfate, sodium sulfate, potassium sulfate.
5. method according to claim 1, is characterized in that, described burning comprises:
Once burn, for burning described throw out, and obtain described salt; And
Secondary burning, for burning described supernatant liquor, and obtains described flue gas.
6. method according to claim 5, is characterized in that, described once burning as the mixture of described throw out and auxiliary fuel is burned in rotary kiln,
Wherein,
Described auxiliary fuel is coal,
Described temperature of once burning is 850~900 degrees Celsius.
7. method according to claim 5, is characterized in that, described secondary burning is for to carry out in incinerator, under combustion-supporting gas and air mixed atmosphere,
Wherein,
Described supernatant liquor is atomizing state,
The temperature of described secondary burning is 1050~1100 degrees Celsius,
Described combustion-supporting gas is Sweet natural gas, and preferred described Sweet natural gas is methane.
8. method according to claim 1, is characterized in that, utilizes boiler to collect described flue gas, to obtain steam.
9. method according to claim 1, is characterized in that, further comprises: described flue gas is carried out at least one processing in dedusting, washing and absorption.
10. method according to claim 9, is characterized in that, described dust removal process for to carry out, to remove dust in described flue gas in sack cleaner.
11. methods according to claim 9, is characterized in that, described carrying out washing treatment is carried out in washing tower, to remove hydrogen fluoride, hydrogenchloride, hydrogen bromide and the dust in described flue gas,
Wherein,
Washings is atomizing state,
The pH value of described washings is less than 3.
12. methods according to claim 9, is characterized in that, described adsorption treatment is carried out in adsorption tower, to remove sulfurous gas, inorganic gas and the dust in described flue gas,
Wherein,
Adsorption liquid is atomizing state,
Described adsorption liquid is alkaline solution, and preferred described alkaline solution is sodium hydroxide solution.
The pH value of described adsorption liquid is greater than 8.
13. 1 kinds of systems that dispose waste liquid, is characterized in that, described system comprises:
Alkaline purification device, for described waste liquid is contacted with basic oxide, to be precipitated thing and supernatant liquor;
Incinerator, described incinerator is connected with described alkaline purification device, for burning described throw out and described supernatant liquor, to obtain salt and flue gas; And
Smoke gas collecting apparatus, described smoke gas collecting apparatus is connected with described incinerator, for collecting described flue gas.
14. systems according to claim 13, is characterized in that, described incinerator comprises:
The first incinerator, described the first incinerator is connected with described alkaline purification device, for burning described throw out, to obtain described salt,
Described the first incinerator is rotary kiln; And
The second incinerator, described the second incinerator is connected with described the first incinerator, for burning described supernatant liquor, to obtain described flue gas,
Described the second incinerator is incinerator.
15. systems according to claim 13, is characterized in that, further comprise at least one in cleaning apparatus, washing device, adsorption unit,
Wherein,
Described cleaning apparatus is connected with described smoke gas collecting apparatus, for described flue gas is carried out to dedusting,
Described washing device is connected with described cleaning apparatus, for washing described flue gas; And
Described adsorption unit is connected with described washing device, for described flue gas is carried out to adsorption treatment.
16. systems according to claim 15, is characterized in that, described cleaning apparatus is sack cleaner; Described washing device is washing tower; And described adsorption unit is washing tower.
CN201310143204.6A 2013-04-24 2013-04-24 Method and system for processing waste liquid Pending CN104118927A (en)

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CN104344408A (en) * 2014-11-04 2015-02-11 宜兴市智博环境设备有限公司 Salt-containing waste liquid combustion and heat energy recycling system and process
CN107525086A (en) * 2016-06-21 2017-12-29 天地未来(北京)环保科技有限公司 A kind of method of cementite oxygen-enriched combusting harmless treatment coal chemical industry high-salt wastewater

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