CN108191050A - A kind of flue gas desulfurization waste-water and the method for ammonia nitrogen waste water low consumption collaboration processing - Google Patents
A kind of flue gas desulfurization waste-water and the method for ammonia nitrogen waste water low consumption collaboration processing Download PDFInfo
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- CN108191050A CN108191050A CN201810093468.8A CN201810093468A CN108191050A CN 108191050 A CN108191050 A CN 108191050A CN 201810093468 A CN201810093468 A CN 201810093468A CN 108191050 A CN108191050 A CN 108191050A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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- 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
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- 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
- C02F2101/101—Sulfur compounds
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- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
A kind of flue gas desulfurization waste-water and the method for ammonia nitrogen waste water low consumption collaboration processing, include the following steps：（1）The flue gas desulfurization waste-water containing sulfate is imported mixing pit with ammonia nitrogen waste water to mix；（2）The pH and temperature of composite waste are adjusted in mixing pit；（3）First the activated sludge after culture is inoculated in biological reaction pool, then composite waste is introduced from mixing pit, in biological reaction pool, microorganism in activated sludge is using ammonia nitrogen as electron donor, by sulfate reduction into elemental sulfur, while ammonium oxidation is realized into the synchronous removal of sulphur, nitrogen into nitrogen.The present invention solves the problems, such as that flue gas desulfurization waste-water is difficult to up to standard and biodegradability difference using water quality after the processing of conventional physical chemistry method and is difficult to use Biochemical method, and realizes the collaboration processing of two kinds of waste water.
Description
Technical field
The invention belongs to industrial water pollution object control fields, are related to the method for two kinds of waste water collaboration processing, and in particular to one
The low consumption cooperative processing method of kind flue gas desulfurization waste-water and ammonia nitrogen waste water.
Background technology
In recent years, with《Prevention and control of air pollution action plan》（Referred to as " ten, air "）, it is new《Thermal power plant's atmosphere pollution
Discharge standard》（GB13223-2011）And special emission limit,《Ambient air quality》（GB3095-2012）Etc. a series of
The implementation of related environmental regulatory standards, the allround promotion development of desulfurizing industrial fume industry.Wet desulphurization is current using most
More flue gas desulfurization techniques, has many advantages, such as efficient, and treating capacity is big, but can be generated in operational process and largely contain sulfuric acid
The waste water of salt, inorganic salt content are high, and biodegradability is poor, it is difficult to Biochemical method, with industrial enterprise waste water with biochemical process at
The present situation of reason mismatches, and the waste water containing a large amount of sulfate be discharged into water body after diffuse into sedimentary, sulfate reduction meeting
A large amount of hydrogen sulfide foul smell are generated, while sulfide and molysite, manganese salt etc. react the black colloidal substances such as generation FeS, MnS, cause
Black smelly state is presented in water body.Therefore the problem of processing of flue gas desulfurization waste-water has become a complexity and again urgent need to resolve.
Flue gas desulfurization waste-water has the characteristics that high salinity and low biochemical.At present, such waste water is frequently with Typical physical method
And chemical Treatment, but such technique has preferable removal effect only for suspended matter and heavy metal ion, and be difficult to remove useless
The a large amount of sulfate contained in water, effluent quality are difficult to reach requirement, and there are reagent consumption amount is big, high energy consumption and of high cost
The shortcomings of.Therefore, it in order to further remove the pollutants such as the sulfate in water removal, needs to be handled using bioanalysis.At present
Mainly there are sulfate reduction, sulfide oxidation and desulfurization denitrification etc. using the method for microbiological treatment sulfur-containing waste water, with routine
Physical-chemical process is compared, and has many advantages, such as technologically advanced, economical rationality, higher sustainability.Wherein, desulfurization denitrification is also
It can realize the synchronous removal of nitrogen, sulphur.However, the sulfate reducing bacteria to play a major role in sulfate-reducing process（SRB）Belong to
In heterotroph, it is electron donor sulphate reducing that need to utilize organic matter.Therefore, in the poor flue gas desulfurization waste-water of processing biochemical
When need additional carbon, although not needing to additional carbon in sulfide oxidation and desulfurization denitrification process, be not suitable for containing
There is the desulfurization wastewater of a large amount of sulfate.
Invention content
The purpose of the present invention is to provide a kind of flue gas desulfurization waste-water and the methods of ammonia nitrogen waste water low consumption collaboration processing.
Based on object above, the present invention takes following technical scheme：
A kind of flue gas desulfurization waste-water and the method for ammonia nitrogen waste water low consumption collaboration processing, include the following steps：
（1）The flue gas desulfurization waste-water containing sulfate is imported mixing pit with ammonia nitrogen waste water to mix；
（2）The pH and temperature of composite waste are adjusted in mixing pit；
（3）First activated sludge is inoculated in biological reaction pool, then composite waste is introduced from mixing pit, in biological reaction pool
Interior, the microorganism in activated sludge is using ammonia nitrogen as electron donor, by sulfate reduction into elemental sulfur, while by ammonium oxidation into nitrogen
Gas realizes the synchronous removal of sulphur, nitrogen；The activated sludge contains 20%~30%Candidatus Kuenenia, 20~30%
'sAnammoxo-globus sulfateAnd 20~30%Bacillus benzoevoransPopulation,Three kinds of microorganisms can
It cooperates under the conditions of existing for no molecular oxygen, aoxidizes ammonia nitrogen by electron acceptor of sulfate, realize sulfate and ammonia nitrogen
Synchronous removal.
The desulfurization wastewater containing sulfate is that the flue gas containing sulfur dioxide obtains after wet desulfurization system is handled.
A concentration of 50~450mg/L of ammonia nitrogen in ammonia nitrogen waste water, a concentration of the 130 of sulfate in desulfurization wastewater~
The molar ratio of 2000mg/L, the mixed ammonia nitrogen in solution of two kinds of waste water and sulfate radical is 1.5~2.5:1, in biological reaction pool
Hydraulic detention time is 8~10h, a concentration of 8~12g/L of activated sludge.
Step（2）In, adjustment temperature is 28~32 DEG C, and pH is 7.5~8.5.
The present invention using sulfate replace nitrite as electron acceptor by ammonium oxidation into nitrogen, while sulfate reduction
Into sulphur simple substance, then nitrogen can be realized, the low energy consumption of sulphur synchronizes removal and achievees the effect that the treatment of wastes with processes of wastes against one another.Non-ferrous metal metallurgy
Etc. industries be often configured with nitrogen fertilizer production line generate ammonia nitrogen waste water, Nitrogenous Fertilizer Industry have coal-fired flue gas desulfurization generate desulfurization wastewater, be
The low consumption collaboration processing of desulfurization wastewater and ammonia nitrogen waste water provides the place of industrial applications.
In the present invention, why select in activated sludge containing 20%~30%Candidatus Kuenenia, 20~30%
'sAnammoxo-globus sulfateAnd 20~30%Bacillus benzoevorans, it is because of three under the ratio
Kind microorganism can cooperate under the conditions of existing for no molecular oxygen, aoxidize ammonia nitrogen by electron acceptor of sulfate, realize
Sulfate removal synchronous with ammonia nitrogen, and removal rate is high, the removal rate of wherein sulfate reaches more than 75%, the removal rate of ammonia nitrogen
Reach more than 87%.IfCandidatus KueneniaPopulation quantity account for the 20% of total amount hereinafter,Anammoxo-globus sulfateAndBacillus benzoevoransPopulation amount reproduction will cause ammonia nitrogen removal frank to decline；IfAnammoxo- globus sulfateAndBacillus benzoevoransPopulation content is relatively low,Candidatus KueneniaPopulation is a large amount of
Breeding will cause sulfate removal rate to decline.
Compared with prior art, the present invention has the following advantages：
（1）It solves water quality after flue gas desulfurization waste-water is handled using conventional physical chemistry method and is difficult to up to standard and biodegradability difference and be difficult to use
The problem of Biochemical method；
（2）Sulfate reduction into elemental sulfur is recycled, while by ammonium oxidation into nitrogen, realize nitrogen in waste water, sulphur
Complete harmless treatment；
（3）Desulfurization high-salt wastewater and ammonia nitrogen waste water mixed processing in same industry reach two kinds of waste water in same bioreactor
The interior synchronous removal for realizing nitrogen, sulphur, reduces cost for wastewater treatment, saves energy consumption.
Description of the drawings
Fig. 1 is the process flow chart of the present invention；Wherein, waste water 1 is the waste water that flue gas desulfurization generates, and waste water 2 is industrial life
Produce the ammonia nitrogen waste water of process discharge.
Specific embodiment
The present invention is further described with reference to specific embodiment.
Involved biological respinse is in the present invention：2NH4 ++SO4 2-→ N2↑+S+4H2O.Flue gas containing sulfur dioxide
After wet desulphurization purifies, the desulfurization wastewater based on sulfate is generated.Desulfurization wastewater is mixed by a certain percentage with ammonia nitrogen waste water
Close, biological reaction pool be discharged into after adjusting pH and temperature, under the action of sulfate type anaerobic ammonia oxidizing bacteria, microorganism using ammonia nitrogen as
Ammonium oxidation by sulfate reduction into elemental sulfur, while is realized the synchronous removal of sulphur, nitrogen by electron donor into nitrogen.Emphasis with
Realize that N, S are removed simultaneously as target in two kinds of waste water.
The present embodiment is implemented under the premise of with technical solution of the present invention, gives detailed embodiment and specific behaviour
Make process, but protection scope of the present invention is not limited to following embodiments.
It should be pointed out that the degree of various microorganisms uses high-flux sequence skill in activated sludge in the present invention
Art is analyzed, appearance " 20%~30%Candidatus Kuenenia", " 20~30%Anammoxo-globus sulfate" and " 20~30%Bacillus benzoevorans" in percentage refer to that the microbial population is accounted in system
The percentage of microorganism total amount.
Embodiment 1
Henan chemical fertilizer factory provides steam using coal-burning boiler in process of production, corresponding to generate containing SO2Flue gas, flue gas is through wet
After formula sodium method technique desulfurization, generate containing a large amount of Na2SO4Desulfurization wastewater, concentration is about 645mg/L.During nitrogen fertilizer production
The ammonia nitrogen waste water of generation, ammonia nitrogen concentration are 160 mg/L.Two kinds of waste water are flowed to a mixing pit through sewage pump to be stirred
Abundant homogeneous, NH after waste water mixing4 +-N: SO4 2-=1.7:1（Molar ratio）.The technological condition that mixing pit is controlled is：pH
It is 7.5, temperature is 30 DEG C.By activated sludge be inoculated in biological reaction pool, the activated sludge contains 27%Candidatus Kuenenia, 24%Anammoxo-globus sulfateAnd 23%Bacillus benzoevorans
Population,The waste water containing homogeneous is introduced from mixing pit, after starting bioreactor, control hydraulic detention time is 9h, and activity is dirty
A concentration of 10g/L of mud.Through Monitoring And Analysis of The Quality, ammonia nitrogen concentration 19mg/L in water outlet, sulfate concentration 140mg/L, ammonia nitrogen and
The removal rate of sulfate is respectively 88.1% and 78.3%.
Embodiment 2
Certain Lead-zinc Smelting Enterprises, in art production process, since the smelting of nonferrous metallic ores generates a large amount of middle low concentration
SO2Exhaust gas, after wet type sodium method technique desulfurization, it is Na to generate containing main component2SO4Desulfurization wastewater, sulfate concentration is
445 mg/L；During its mating nitrogen fertilizer plant's production ammonium sulfate, a large amount of high ammonia-nitrogen wastewater, ammonia nitrogen concentration about 130 are generated
mg/L.Two kinds of waste water are flowed to a mixing pit through sewage pump and are stirred abundant homogeneous, NH after waste water mixing4 +: SO4 2-=
2:1（Molar ratio）.The technological condition that mixing pit is controlled is：PH is 8.5, and temperature is 28 DEG C.Activated sludge is inoculated in
In biological reaction pool, the activated sludge contains 26%Candidatus Kuenenia, 24%Anammoxo-globus sulfateAnd 23%Bacillus benzoevoransPopulation,The waste water containing homogeneous is introduced from mixing pit, it is anti-to start biology
After answering device, control hydraulic detention time is 9h, a concentration of 9g/L of activated sludge.Through Monitoring And Analysis of The Quality, ammonia nitrogen is dense in water outlet
17mg/L, sulfate concentration 86mg/L are spent, the removal rate of ammonia nitrogen and sulfate is respectively 87.1% and 80.5%.
Embodiment 3
Certain receives the sewage treatment plant of sulfur-containing waste water, and it is about 130mg/L to enter factory's sulfate radical in waste water concentration, ammonia nitrogen concentration 50
Mg/L, NH4 +: SO4 2-=2.5:1（Molar ratio）.The technological condition that reactor is controlled is：PH is 7.5, temperature 30
℃.Activated sludge is inoculated in biological reaction pool, the activated sludge contains 24%Candidatus Kuenenia、21%
'sAnammoxo-globus sulfateAnd 20%Bacillus benzoevoransPopulation,Simulated wastewater is introduced and is reacted
Device, after starting bioreactor, control hydraulic detention time is 8h, a concentration of 8g/L of activated sludge.Through Monitoring And Analysis of The Quality,
The removal rate of 5 mg/L of ammonia nitrogen concentration in water outlet, sulfate concentration 30mg/L, ammonia nitrogen and sulfate is respectively 90% and 77%.
Embodiment 4
Certain thermal power plant is simultaneously using coal and waste incineration and generating electricity, since the sulphur contained in coal can produce in combustion
Raw SO2Exhaust gas, after wet type sodium method technique desulfurization, it is Na to generate containing main component2SO4Desulfurization wastewater, sulfate concentration is
2000 mg/L；And contain a large amount of high ammonia-nitrogen wastewater, about 450 mg/L of ammonia nitrogen concentration in landfill leachate.Landfill leachate is first
After anaerobic digestion, it is flowed to a mixing pit through sewage pump and desulfurization wastewater and is stirred abundant homogeneous, NH after waste water mixing4 +: SO4 2-=1.5:1（Molar ratio）.The technological condition that mixing pit is controlled is：PH is 7.8, and temperature is 30 DEG C.It will be active
In biological reaction pool, the activated sludge contains 28% for sludge seedingCandidatus Kuenenia, 24%Anammoxo-globus sulfateAnd 23%Bacillus benzoevoransPopulation,It is introduced from mixing pit containing homogeneous
Waste water, start bioreactor after, control hydraulic detention time be 10h, a concentration of 12g/L of activated sludge.It is supervised through water quality
The removal rate of survey analysis, ammonia nitrogen concentration 50mg/L in water outlet, sulfate concentration 490mg/L, ammonia nitrogen and sulfate is respectively 88.9%
With 75.2%.
In other embodiments, as long as meeting in activated sludge containing 20%~30%Candidatus Kuenenia、20
~30%Anammoxo-globus sulfateAnd 20~30%Bacillus benzoevoransThe present invention can be achieved
Goal of the invention.
Claims (4)
1. a kind of flue gas desulfurization waste-water and the method for ammonia nitrogen waste water low consumption collaboration processing, which is characterized in that include the following steps：
（1）The flue gas desulfurization waste-water containing sulfate is imported mixing pit with ammonia nitrogen waste water to mix；
（2）The pH and temperature of composite waste are adjusted in mixing pit；
（3）First activated sludge is inoculated in biological reaction pool, then composite waste is introduced from mixing pit, in biological reaction pool
Interior, the microorganism in activated sludge is using ammonia nitrogen as electron donor, by sulfate reduction into elemental sulfur, while by ammonium oxidation into nitrogen
Gas realizes the synchronous removal of sulphur, nitrogen；The activated sludge contains 20%~30%Candidatus Kuenenia, 20~30%
'sAnammoxo-globus sulfateAnd 20~30%Bacillus benzoevoransPopulation,Three kinds of microorganisms can
It cooperates under the conditions of existing for no molecular oxygen, aoxidizes ammonia nitrogen by electron acceptor of sulfate, realize sulfate and ammonia nitrogen
Synchronous removal.
2. the low consumption cooperative processing method of flue gas desulfurization waste-water according to claim 1 and ammonia nitrogen waste water, which is characterized in that
The desulfurization wastewater containing sulfate is that the flue gas containing sulfur dioxide obtains after wet desulfurization system is handled.
3. the low consumption cooperative processing method of flue gas desulfurization waste-water according to claim 1 and ammonia nitrogen waste water, which is characterized in that
A concentration of 50~450mg/L of ammonia nitrogen in ammonia nitrogen waste water, a concentration of 130~2000mg/L of sulfate in desulfurization wastewater, two kinds
The molar ratio of the mixed ammonia nitrogen in solution of waste water and sulfate radical is 1.5~2.5:1, hydraulic detention time is in biological reaction pool
8~10h, a concentration of 8~12g/L of activated sludge.
4. the low consumption cooperative processing method of flue gas desulfurization waste-water according to claim 1 and ammonia nitrogen waste water, which is characterized in that
Step（2）In, adjustment temperature is 28~32 DEG C, and pH is 7.5~8.5.
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Cited By (5)
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| CN110040848A (en) * | 2019-03-13 | 2019-07-23 | 苏州科技大学 | It is a kind of that the processing method containing ammonia nitrogen and sulfate inorganic wastewater is realized based on sulfur cycle |
| CN110052099A (en) * | 2019-03-28 | 2019-07-26 | 昆明理工大学 | A kind of method of sulfur-containing smoke gas biochemical de-sulfur and sulphur recovery |
| CN110316824A (en) * | 2019-08-07 | 2019-10-11 | 大连海事大学 | A kind of marine exhaust scrub raffinate cooperates with processing unit and cooperative processing method with Sewage from Ships |
| CN110639349A (en) * | 2018-06-27 | 2020-01-03 | 郑州大学 | Chemical coupling biological synchronous waste gas desulfurization, deamination and sulfur combination recycling process |
| CN111099784A (en) * | 2018-10-26 | 2020-05-05 | 中国石油化工股份有限公司 | Treatment method of desulfurization wastewater |
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| CN108191050B (en) | 2020-06-09 |
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