CN109205791A - A kind of waste water advanced removal of carbon and nitrogen processing method of high-carbon nitrogen - Google Patents
A kind of waste water advanced removal of carbon and nitrogen processing method of high-carbon nitrogen Download PDFInfo
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- CN109205791A CN109205791A CN201811412859.8A CN201811412859A CN109205791A CN 109205791 A CN109205791 A CN 109205791A CN 201811412859 A CN201811412859 A CN 201811412859A CN 109205791 A CN109205791 A CN 109205791A
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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Abstract
The present invention provides a kind of waste water advanced removal of carbon and nitrogen processing methods of high-carbon nitrogen, comprising the following steps: a) carries out Anaerobic Treatment to high-carbon nitrogen waste water；B) waste water for obtaining a part of step a) carries out nitrosation processing；C) waste water for obtaining the obtained waste water of remainder step a) and step b), which mixes, carries out anaerobic ammonia oxidation/denitrification coupling processing.The present invention also provides a kind of processing systems of high-carbon nitrogen waste water.The present invention is first handled high-carbon nitrogen waste water by efficient anaerobic, removes most of organic matter therein；Then a part water outlet carries out nitrosation processing, makes mineralized nitrogen nitrite nitrogen therein；Another part efficient anaerobic treated water outlet directly with nitrosation treated water outlet mix, progress anaerobic ammonia oxidation/denitrification coupling processing.The present invention carries out matching type nitrosation without additional, and simple process can be greatly reduced processing energy consumption, and removal effect stability and high efficiency, reach 90% or more to the simultaneous removing rate of COD and ammonia nitrogen.
Description
Technical field
The invention belongs to technical field of waste water processing more particularly to a kind of waste water advanced removal of carbon and nitrogen processing sides of high-carbon nitrogen
Method.
Background technique
With the promulgation of " water prevention and cure of pollution action plan " (i.e. ten, water), country proposes water pollution control and improvement
More strict requirements increasingly increase the cry of carbon nitrogen minimum discharge technology.In recent years, Industry Structure, which is regulated the speed, adds
Fastly, industrial sector is more refined and is complicated, and causes industrial discharge Pollutants in Wastewater content to become increasingly complex, especially carbon
The content of nitrogen is higher and higher, that is, the high-carbon nitrogen waste water being commonly called as, such as petrochemical industry, food, power plant, pharmacy, refuse landfill production
Raw waste water.The type wastewater treatment difficulty is big, and treatment process energy consumption is high, and waste discharge is difficult to reach reduced levels.
For high-carbon nitrogen waste water, in conventional process, simultaneous denitrification is realized except carbon, is to reduce organic matter in front end
On the basis of, it is subsequent to use traditional biological removal of carbon and nitrogen, need to guarantee that sufficient organic carbon source carries out denitrogenation in back segment.The process is deposited
In following problems: (1) part organic carbon can only be removed in anaerobic processes, guarantee have needed for subsequent bio denitrogenation processing process
Machine carbon source causes organic carbon source energy rate low；(2) in biological denitrificaion treatment process, aeration high-intensitive for a long time is needed, is made
It is high at wastewater treatment process energy consumption；(3) water outlet carbon nitrogen concentration remains unchanged higher, it is difficult to ultra-deep removal of carbon and nitrogen.Therefore, high-carbon nitrogen is useless
The low consumption of water is treated as the difficult point of sewage treatment field, especially under current energy consumption and environmental protection double contradition,
Realize advanced nitrogen except carbon is research hotspot under the conditions of low energy consumption.
Anammox reaction is novel denitrification process developed in recent years, is referred under anaerobic, anaerobism ammonia
Oxidation bacteria is with NO2 -- N is electron acceptor, aoxidizes NH4 +- N is N2Process, which is not required to organic carbon source.It is nitrified relative to tradition
Denitrification denitrogenation, the technique based on Anammox reaction can reduce about 50% oxygen-supplying amount and 100% organic carbon source supply, drop
Reduction process takes about 90%.However, the anaerobic ammonia oxidizing bacteria growth rate of autotrophic type is low, the doubling time is long, is highly prone to practical useless
The inhibition of Organic substance in water.Moreover, anaerobic ammonium oxidation process only remove 90% in the form of ammonia and nitrite existing for nitrogen, simultaneously
About 10% nitrate nitrogen is generated, and whole process acts on useless Organic substance in water almost without any removal.Therefore, usual situation
It is lower to be both difficult to remove the nitrogen in actual waste water completely using single Anammox reaction, it also can not be to organic in waste water
Carbon source is effectively removed, and realizes that advanced nitrogen is difficult except carbon.Meanwhile Anammox is more harsh to flow condition, into
Matching type nitrosation must be realized before entering anaerobic ammonia oxidation reactor.Matching type nitrosation by water quality, temperature, pH value and its
The limitation of his control condition stablizes and realizes that matching type nitrosation is more difficult.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of waste water advanced removal of carbon and nitrogen processing method of high-carbon nitrogen, this hair
The carbon nitrogen in high-carbon nitrogen waste water can be removed in depth in the method for bright offer, while reducing processing energy consumption.
The present invention provides a kind of waste water advanced removal of carbon and nitrogen processing methods of high-carbon nitrogen, comprising the following steps:
A) Anaerobic Treatment is carried out to high-carbon nitrogen waste water；
B) waste water for obtaining a part of step a) carries out nitrosation processing；
C) waste water for obtaining the obtained waste water of remainder step a) and step b), which mixes, carries out Anammox/anti-nitre
Change coupling processing.
The present invention carries out Anaerobic Treatment to high-carbon nitrogen waste water first, removes most of organic matter therein.In the present invention, institute
High-carbon nitrogen waste water is stated as the only waste water containing high-enriched organics and ammonia nitrogen.In one embodiment, in the high-carbon nitrogen waste water,
Ammonia nitrogen concentration > 100mg/L, COD > 500mg/L.In one embodiment, in the high-carbon nitrogen waste water, ammonia nitrogen concentration >
150mg/L, COD > 800mg/L.The present invention is not particularly limited the source of the high-carbon nitrogen waste water, can be to directly obtain
High-carbon nitrogen waste water, or remove the high-carbon nitrogen waste water after other pollutants.
The present invention is not particularly limited the technological parameter of the Anaerobic Treatment, can remove most of in high-carbon nitrogen waste water
Organic matter.Can by adjusting the technological parameter of Anaerobic Treatment, make organic removal rate (in terms of COD) reach 80% with
On.In one embodiment, when Anaerobic Treatment, hydraulic detention time 12-24h, temperature is 10-25 DEG C.
Waste water after Anaerobic Treatment is divided into two parts, and a part carries out nitrosation processing, is nitrous by mineralized nitrogen
State nitrogen, ammonia nitrogen removal frank and nitrite nitrogen accumulation rate are more than 95%；Treated that waste water mixes for remainder and nitrosation, ammonia nitrogen
Anaerobic ammonia oxidation/denitrification coupling processing can be carried out without matching with nitrite nitrogen.In one embodiment, step a) is obtained
Waste water in, for nitrosation processing waste water percent by volume be 50%~60%, be directly used in Anammox/anti-nitre
The percent by volume for changing the waste water of coupling processing is 50%~40%.In one embodiment, it in the waste water that step a) is obtained, uses
It is 55% in the percent by volume of the waste water of nitrosation processing, is directly used in the waste water of anaerobic ammonia oxidation/denitrification coupling processing
Percent by volume be 45%.
The technological parameter that the present invention handles the nitrosation is not particularly limited, and can be by the mineralized nitrogen in waste water
Nitrite nitrogen.The technological parameter that can be handled by adjusting nitrosation, reaches ammonia nitrogen removal frank and nitrite nitrogen accumulation rate
To 95% or more.In one embodiment, when nitrosation is handled, hydraulic detention time 6-12h, temperature is 10-25 DEG C, dissolution
Oxygen concentration is 0.05-0.1mg/L.
The present invention is not particularly limited the technological parameter of the anaerobic ammonia oxidation/denitrification coupling processing, can synchronize
Remove organic matter and nitrogen.It can make COD, ammonia by adjusting the technological parameter of anaerobic ammonia oxidation/denitrification coupling processing
Nitrogen and total nitrogen simultaneous removing rate reach 90% or more.In one embodiment, hydraulic detention time 8-12h, temperature 25-35
℃。
The present invention also provides a kind of processing systems of high-carbon nitrogen waste water, comprising:
High efficiency anaerobic reactor equipped with high-carbon nitrogen waterwater entrance；
The nitrosation reactor being connected with the wastewater outlet of the high efficiency anaerobic reactor；
The anaerobism being connected respectively with the wastewater outlet of the wastewater outlet of the high efficiency anaerobic reactor and nitrosation reactor
Ammoxidation/denitrification coupled reactor.
Processing system provided by the invention includes high efficiency anaerobic reactor, removes high-carbon by the anaerobic effect of microorganism
Most of organic matter in nitrogen waste water.In one embodiment, removal rate of the high efficiency anaerobic reactor to organic matter (in terms of COD)
Reach 80% or more.
Processing system provided by the invention includes nitrosation reactor, and the water inlet and efficient anaerobic of nitrosation reactor are anti-
The water outlet of device is answered to be connected, it is Asia by mineralized nitrogen that a part of waste water for that will pass through Anaerobic Treatment, which carries out nitrosation processing,
Nitrate nitrogen.In one embodiment, nitrosation reactor reaches 95% or more to the conversion ratio of ammonia nitrogen in waste water.
Processing system provided by the invention includes anaerobic ammonia oxidation/denitrification coupled reactor, water inlet respectively with height
The water outlet of effect anaerobic reactor is connected with the water outlet of nitrosation reactor, can be directly sharp without carrying out matching nitrosation
With high efficiency anaerobic reactor be discharged in ammonia nitrogen and nitrosation reactor water outlet in nitrite nitrogen carry out Anammox/anti-nitre
Change coupling processing.
The processing system course of work provided by the invention is as follows:
High-carbon nitrogen waste water initially enters high efficiency anaerobic reactor, removes under the action of anaerobe most of organic
Object；The 55% of high efficiency anaerobic reactor water outlet enters nitrosation reactor and carries out nitrosation processing, is nitrous state by mineralized nitrogen
Nitrogen, subsequently into anaerobic ammonia oxidation/denitrification coupled reactor；Meanwhile the 45% of high efficiency anaerobic reactor water outlet enters anaerobism
Ammoxidation/denitrification coupled reactor carries out anaerobic ammonia oxidation/denitrification coupling processing, removes nitrogen therein.
The present invention is first handled high-carbon nitrogen waste water by efficient anaerobic, removes most of organic matter therein；Then one
Part water outlet carries out nitrosation processing, makes mineralized nitrogen nitrite nitrogen therein；Treated for another part efficient anaerobic out
Water directly with nitrosation treated water outlet mix, progress anaerobic ammonia oxidation/denitrification coupling processing.Processing provided by the invention
Method carries out matching type nitrosation without additional, and processing energy consumption can be greatly reduced in simple process；Moreover, the present invention utilizes height
The characteristics of carbon nitrogen waste water, imitates the removal of carbon nitrogen in conjunction with efficient anaerobic processing, water distribution, anaerobic ammonia oxidation/denitrification coupling processing
Fruit is stable and efficient, can be realized synchronous advanced nitrogen except carbon, promotes effluent quality.The experimental results showed that provided by the invention
The carbon nitrogen simultaneous removing rate for the high-carbon nitrogen waste water that processing method is 1000mg/L to COD concentration, ammonia nitrogen concentration is 200mg/L reaches
90% or more.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of processing system provided in an embodiment of the present invention.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
Referring to Fig. 1, Fig. 1 is the high-carbon nitrogen waste water treatment system that the embodiment of the present invention 1 provides, wherein 1 is anti-for efficient anaerobic
Device is answered, 2 be nitrosation reactor, and 3 be anaerobic ammonia oxidation/denitrification coupled reactor.
High-carbon nitrogen waste water initially enters high efficiency anaerobic reactor 1, removes under the action of anaerobe most of organic
Object；The 55% of the water outlet of high efficiency anaerobic reactor 1 enters nitrosation reactor 2 and carries out nitrosation processing, is nitrous by mineralized nitrogen
State nitrogen, subsequently into anaerobic ammonia oxidation/denitrification coupled reactor 3；Meanwhile 45% entrance that high efficiency anaerobic reactor 1 is discharged
Anaerobic ammonia oxidation/denitrification coupled reactor 3 exports mixing progress anaerobic ammonia oxidation/denitrification with nitrosation reactor and couples
Processing, removes nitrogen therein.
Embodiment 2
(1) high-carbon nitrogen waste water is taken, COD concentration is 1000mg/L, ammonia nitrogen concentration 200mg/L, by highly effective anaerobic reaction
Device processing, it is 12h that processing parameter, which is hydraulic detention time (HRT), 20 DEG C of temperature, effluent COD concentration 200mg/L, ammonia nitrogen
200mg/L。
(2) water outlet of high efficiency anaerobic reactor 55%, into nitrosation reactor, processing parameter is hydraulic detention time
It (HRT) is 8h, 20 DEG C of temperature, dissolved oxygen concentration 0.05mg/L, effluent COD concentration 150mg/L, nitrite nitrogen 190mg/L,
Nitrate nitrogen is 10mg/L.
(3) nitrosation reactor water outlet and 45% high efficiency anaerobic reactor water outlet, are mixed into Anammox/anti-nitre
Change coupled reactor, processing parameter is that hydraulic detention time (HRT) is 12h, and 30 DEG C of temperature, water outlet COD is less than 100mg/L, ammonia
Nitrogen is less than 10mg/L, and total nitrogen is less than 20mg/L.
It can be seen that the processing method provided by the present invention simple process, for high-carbon nitrogen waste water, raw water, which first uses, efficiently detests
Oxygen reactor removes most of organic matter, recycles the energy；The waste water flowed out from high efficiency anaerobic reactor, a portion waste water
Into nitrosation reactor, conversion ammonia nitrogen is nitrite nitrogen；The highly effective anaerobic reaction of nitrosation reactor water outlet and remainder
Device water outlet mixing, enters anaerobic ammonia oxidation/denitrification coupled reactor, synchronous in conjunction with Anammox and anti-nitration reaction
Remove organic matter and nitrogen.The technique has the characteristics that simple process, low energy consumption, removal effect stability and high efficiency, to COD and ammonia nitrogen
Simultaneous removing rate reaches 90% or more.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of waste water advanced removal of carbon and nitrogen processing method of high-carbon nitrogen, comprising the following steps:
A) Anaerobic Treatment is carried out to high-carbon nitrogen waste water；
B) waste water for obtaining a part of step a) carries out nitrosation processing；
C) waste water for obtaining the obtained waste water of remainder step a) and step b), which mixes, carries out anaerobic ammonia oxidation/denitrification coupling
Conjunction processing.
2. processing method according to claim 1, which is characterized in that in the high-carbon nitrogen waste water, ammonia nitrogen concentration >
100mg/L, COD > 500mg/L.
3. processing method according to claim 1, which is characterized in that carry out Anaerobic Treatment to high-carbon nitrogen waste water in step a)
Afterwards, the COD removal rate in waste water is 80% or more.
4. processing method according to claim 3, which is characterized in that in step a), hydraulic detention time 12-24h, temperature
Degree is 10-25 DEG C.
5. processing method according to claim 1, which is characterized in that in the waste water that step a) is obtained, at nitrosation
The percent by volume of the waste water of reason is 50%~60%.
6. processing method according to claim 1, which is characterized in that in the waste water that step a) is obtained, at nitrosation
For the waste water of reason after nitrosation is handled, the accumulation rate of ammonia nitrogen removal frank and nitrite nitrogen is more than 95%.
7. processing method according to claim 6, which is characterized in that in the step b), hydraulic detention time 6-
12h, temperature are 10-25 DEG C, dissolved oxygen concentration 0.05-0.1mg/L.
8. processing method according to claim 1, which is characterized in that in the step c), hydraulic detention time 8-
12h, temperature are 25-35 DEG C.
9. a kind of processing system of high-carbon nitrogen waste water, comprising:
High efficiency anaerobic reactor equipped with high-carbon nitrogen waterwater entrance；
The nitrosation reactor being connected with the wastewater outlet of the high efficiency anaerobic reactor；
The anaerobism ammonia oxygen being connected respectively with the wastewater outlet of the wastewater outlet of the high efficiency anaerobic reactor and nitrosation reactor
Change/denitrification coupled reactor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194568A (en) * | 2019-06-21 | 2019-09-03 | 见嘉环境科技（苏州）有限公司 | A kind of processing method of high ammonia-nitrogen wastewater |
| CN112979075A (en) * | 2021-02-26 | 2021-06-18 | 天津凯英科技发展股份有限公司 | Zero-carbon-source-added biogas slurry denitrification method and application thereof |
| CN114180719A (en) * | 2021-12-21 | 2022-03-15 | 四川省宜宾五粮液集团有限公司 | Fermentation wastewater treatment system and method for treating fermentation wastewater |
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| CN112979075B (en) * | 2021-02-26 | 2022-12-23 | 天津凯英科技发展股份有限公司 | Zero-carbon-source-added biogas slurry denitrification method and application thereof |
| CN114180719A (en) * | 2021-12-21 | 2022-03-15 | 四川省宜宾五粮液集团有限公司 | Fermentation wastewater treatment system and method for treating fermentation wastewater |
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