CN106315964A - SNCR denitration deodorizing method - Google Patents
SNCR denitration deodorizing method Download PDFInfo
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- CN106315964A CN106315964A CN201510337531.4A CN201510337531A CN106315964A CN 106315964 A CN106315964 A CN 106315964A CN 201510337531 A CN201510337531 A CN 201510337531A CN 106315964 A CN106315964 A CN 106315964A
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- sewage
- dope
- produced
- sludge dewatering
- garbage
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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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
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- Treatment Of Sludge (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses an SNCR denitration deodorizing method. The method comprises the following steps: 1, inputting sewage and a leachate into a regulating tank, regulating the sewage and the sewage, pouring the adjusted sewage into a precipitation tank, and pumping obtained sewage to an intermediate water tank for secondary treatment; 2, denitrifying the sewage in the intermediate water tank, and carrying out primary nitration and secondary nitration; 3, separating the sewage through a nanofiltration system to obtain a clear liquid and a concentrate, and discharging the purified thick liquid into a concentrate tank for outward transportation; and 4, extracting air used for combustion supporting from a garbage pool, preheating the air, inputting the preheated air into a garbage incinerator to make the preheated air be mixed with the concentrate obtained in step 3 in the concentrate tank, and spraying the obtained solution into the garbage incinerator in order to realize a purifying effect. Sewage generated in the garbage deodorizing process is purified and reused, and the concentrate generated in the purifying process can be used in denitration of garbage incineration, so sewage purification and facilitation of purification of garbage incineration flue dust are simultaneously realized.
Description
Technical field
The present invention relates to a kind of SNCR denitration deodorizing method.
Background technology
Along with socioeconomic high speed development, the house refuse in city is also with increasing sharply, and these house refuses are gradually polluting environment.The common processing method of house refuse has landfill and burns, existing incinerating method is generally used on waste incineration and generating electricity, but owing to house refuse contains nitrogenous inorganic matter and Organic substance, the flue gas of burning process can contain a certain amount of NOx, if be directly discharged in air, the generation of acid rain can be caused, flue gas must be done denitration the most before discharging and process.At present, this flue gas is done the selective non-catalytic reduction of method and SCR that denitration processes, SCR needs temperature to coordinate catalyst jointly to act on the effect that competence exertion is maximum, its cost is high, occupation area of equipment is bigger, SNCR cost is relatively low, and the temperature needed for reacting is close to the temperature in incinerator, but generally incinerator is after being passed through air, temperature can change, and affects the temperature of reduction reaction, causes its efficiency low, even make reducing agent aoxidize, cause cost high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of SNCR denitration deodorizing method, sewage produced in rubbish deodorisation process can be carried out cleansing and recycling by this device, dope produced by purification process is used for denitration during waste incineration, may also help in the flue dust purifying waste incineration while playing sewage purification.
For solving the problems referred to above, the present invention adopts the following technical scheme that
A kind of SNCR denitration deodorizing method, comprises the following steps:
1) percolate is coordinated to input to regulating reservoir in sewage produced in rubbish deodorisation process, inculcate after being regulated by regulating reservoir to sedimentation tank, by UBF anaerobic system, the mud in sewage and biogas were separated before inculcating, mud after separation enters sludge dewatering system, biogas after separation by flare system burn volatilization, in sedimentation tank precipitation after, settled sewage transferred to intermediate pool wait after-treatment；
2) sewage in intermediate pool is carried out denitrification, carry out a nitrification and second nitrification the most again, sewage after second nitrification carries out ultrafiltration, sewage qualified after ultra filtration enters nanofiltration system, not qualified sewage carries out denitrification, a nitrification and second nitrification again until qualified, and in nitrifying process, produced excess sludge enters sludge dewatering system；
3) by nanofiltration system, sewage being separated into clear liquid and dope, wherein dope is by being separated into scum silica frost and clear liquid after coagulation air-float system, and scum silica frost enters sludge dewatering system and is dehydrated, and after dope separation, produced clear liquid is back to regulating reservoir；The clear liquid input formed after being separated by nanofiltration system sewage carries out secondary separation to counter-infiltration system, the dope after purifying and clear liquid is formed after separation, dope after purifying enters concentration liquid pool and waits outward transport, and the clear liquid after purifying carries out secondary utilization in being back to regulating reservoir；
4) from garbage pool, extraction is used for combustion-supporting air, to be input to after air preheat in incinerator, the in-furnace temperature of incinerator is promoted to 850～1100 DEG C, then by the air blend step 3 after preheating) in store to the dope concentrated in liquid pool and spray into together to incinerator, by the NOx reduction removing in flue gas produced in Refuse Incineration Process, reach the effect purified.
As preferred technical scheme, transport after the drying sludge being dehydrated in sludge dewatering system and fill to garbage storing hole.
As preferred technical scheme, in sludge dewatering system, after sludge dewatering, produced liquid enters step 2) in denitrification step.
As preferred technical scheme, in rubbish deodorisation process, produced system sludge is directly entered sludge dewatering system.
The invention has the beneficial effects as follows: sewage produced in rubbish deodorisation process can be carried out cleansing and recycling by this device, dope produced by purification process is used for denitration during waste incineration, the flue dust purifying waste incineration is may also help in while playing sewage purification, reach the effect of twice laid, also reduce the cost of garbage disposal simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the block diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention are made apparent clear and definite defining.
Refering to a kind of SNCR denitration deodorizing method shown in Fig. 1, comprise the following steps:
1) percolate is coordinated to input to regulating reservoir in sewage produced in rubbish deodorisation process, inculcate after being regulated by regulating reservoir to sedimentation tank, by UBF anaerobic system, the mud in sewage and biogas were separated before inculcating, mud after separation enters sludge dewatering system, biogas after separation by flare system burn volatilization, in sedimentation tank precipitation after, settled sewage transferred to intermediate pool wait after-treatment；
2) sewage in intermediate pool is carried out denitrification, carry out a nitrification and second nitrification the most again, sewage after second nitrification carries out ultrafiltration, sewage qualified after ultra filtration enters nanofiltration system, not qualified sewage carries out denitrification, a nitrification and second nitrification again until qualified, and in nitrifying process, produced excess sludge enters sludge dewatering system；
3) by nanofiltration system, sewage being separated into clear liquid and dope, wherein dope is by being separated into scum silica frost and clear liquid after coagulation air-float system, and scum silica frost enters sludge dewatering system and is dehydrated, and after dope separation, produced clear liquid is back to regulating reservoir；The clear liquid input formed after being separated by nanofiltration system sewage carries out secondary separation to counter-infiltration system, the dope after purifying and clear liquid is formed after separation, dope after purifying enters concentration liquid pool and waits outward transport, and the clear liquid after purifying carries out secondary utilization in being back to regulating reservoir；
4) from garbage pool, extraction is used for combustion-supporting air, to be input to after air preheat in incinerator, the in-furnace temperature of incinerator is promoted to 850～1100 DEG C, then by the air blend step 3 after preheating) in store to the dope concentrated in liquid pool and spray into together to incinerator, by the NOx reduction removing in flue gas produced in Refuse Incineration Process, reach the effect purified.
Transport after the drying sludge being dehydrated in sludge dewatering system and fill to garbage storing hole.
In sludge dewatering system, after sludge dewatering, produced liquid enters step 2) in denitrification step.
In rubbish deodorisation process, produced system sludge is directly entered sludge dewatering system.
The invention has the beneficial effects as follows: sewage produced in rubbish deodorisation process can be carried out cleansing and recycling by this device, dope produced by purification process is used for denitration during waste incineration, the flue dust purifying waste incineration is may also help in while playing sewage purification, reach the effect of twice laid, also reduce the cost of garbage disposal simultaneously.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (4)
1. a SNCR denitration deodorizing method, it is characterised in that: comprise the following steps:
Percolate is coordinated to input to regulating reservoir in sewage produced in rubbish deodorisation process, inculcate after being regulated by regulating reservoir to sedimentation tank, by UBF anaerobic system, the mud in sewage and biogas were separated before inculcating, mud after separation enters sludge dewatering system, biogas after separation by flare system burn volatilization, in sedimentation tank precipitation after, settled sewage transferred to intermediate pool wait after-treatment；
Sewage in intermediate pool is carried out denitrification, carry out a nitrification and second nitrification the most again, sewage after second nitrification carries out ultrafiltration, sewage qualified after ultra filtration enters nanofiltration system, not qualified sewage carries out denitrification, a nitrification and second nitrification again until qualified, and in nitrifying process, produced excess sludge enters sludge dewatering system；
By nanofiltration system, sewage being separated into clear liquid and dope, wherein dope is by being separated into scum silica frost and clear liquid after coagulation air-float system, and scum silica frost enters sludge dewatering system and is dehydrated, and after dope separation, produced clear liquid is back to regulating reservoir；The clear liquid input formed after being separated by nanofiltration system sewage carries out secondary separation to counter-infiltration system, the dope after purifying and clear liquid is formed after separation, dope after purifying enters concentration liquid pool and waits outward transport, and the clear liquid after purifying carries out secondary utilization in being back to regulating reservoir；
From garbage pool, extraction is for combustion-supporting air, to be input to after air preheat in incinerator, the in-furnace temperature of incinerator is promoted to 850～1100 DEG C, then by the air blend step 3 after preheating) in store to the dope concentrated in liquid pool and spray into together to incinerator, by the NOx reduction removing in flue gas produced in Refuse Incineration Process, reach the effect purified.
SNCR denitration deodorizing method the most according to claim 1, it is characterised in that: transport after the drying sludge being dehydrated in sludge dewatering system and fill to garbage storing hole.
SNCR denitration deodorizing method the most according to claim 1, it is characterised in that: in sludge dewatering system, after sludge dewatering, produced liquid enters step 2) in denitrification step.
SNCR denitration deodorizing method the most according to claim 1, it is characterised in that: in rubbish deodorisation process, produced system sludge is directly entered sludge dewatering system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510337531.4A CN106315964A (en) | 2015-06-18 | 2015-06-18 | SNCR denitration deodorizing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510337531.4A CN106315964A (en) | 2015-06-18 | 2015-06-18 | SNCR denitration deodorizing method |
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| CN106315964A true CN106315964A (en) | 2017-01-11 |
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| CN201510337531.4A Pending CN106315964A (en) | 2015-06-18 | 2015-06-18 | SNCR denitration deodorizing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702108A (en) * | 2017-10-17 | 2018-02-16 | 北京高安屯垃圾焚烧有限公司 | Garbage burning boiler returns the method that spray garbage leachate reduces NOx emission |
| CN111396892A (en) * | 2020-04-12 | 2020-07-10 | 林仲谋 | Industrial waste treatment incineration tail gas denitration device and application method thereof |
| CN114315016A (en) * | 2021-12-16 | 2022-04-12 | 郑州公用环境科技有限公司 | Method for treating landfill leachate of waste incineration power plant |
-
2015
- 2015-06-18 CN CN201510337531.4A patent/CN106315964A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702108A (en) * | 2017-10-17 | 2018-02-16 | 北京高安屯垃圾焚烧有限公司 | Garbage burning boiler returns the method that spray garbage leachate reduces NOx emission |
| CN111396892A (en) * | 2020-04-12 | 2020-07-10 | 林仲谋 | Industrial waste treatment incineration tail gas denitration device and application method thereof |
| CN114315016A (en) * | 2021-12-16 | 2022-04-12 | 郑州公用环境科技有限公司 | Method for treating landfill leachate of waste incineration power plant |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ni Weidong Inventor after: Yu Rui Inventor after: Xue Chaohui Inventor after: Chen Meinan Inventor after: Zhang Chunhui Inventor after: Zhu Li Inventor after: Li Qi Inventor after: Huang Keyong Inventor after: Wang Shuncheng Inventor after: Chen Ruizhang Inventor before: Ni Weidong |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180102 Address after: 100176 Beijing City gold Daxing District Economic Development Zone No. 8 Road No. 1 building two room 233 Applicant after: Sino (Beijing) Environment Engineering Development Co., Ltd. Applicant after: Huarun environmental protection engineering investment Limited Address before: 100087 Beijing city Daxing District Huangcun Da Zhuang East Tianhe North Road, No. 14 Applicant before: Sino (Beijing) Environment Engineering Development Co., Ltd. |
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Application publication date: 20170111 |