CN109879419A - The filler special and preparation method thereof of sulphur iron coupling technique removal nitrate nitrogen - Google Patents
The filler special and preparation method thereof of sulphur iron coupling technique removal nitrate nitrogen Download PDFInfo
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- CN109879419A CN109879419A CN201910168556.4A CN201910168556A CN109879419A CN 109879419 A CN109879419 A CN 109879419A CN 201910168556 A CN201910168556 A CN 201910168556A CN 109879419 A CN109879419 A CN 109879419A
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- sulphur
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Abstract
The invention discloses a kind of filler specials and preparation method thereof of sulphur iron coupling technique removal nitrate nitrogen, including simple substance sulphur, lime stone, troilite and denitrifying bacterium immobilization particle, the mass percent range of simple substance sulphur is 40%-60%, the mass percent range of lime stone is 10%-15%, troilite mass percent range is 15-25%, and denitrifying bacterium immobilization particle mass percent range is 30%-40%.Autotrophic denitrification bacterium utilizes lime stone synthetic cell, electron donor of the troilite as nitrate reduction, to complete denitrification process, denitrifying bacterium immobilization particle provides denitrifying bacteria, complete denitrogenation of waste water, each ingredient is both designed as graininess, and filler can be sufficiently stirred, and guarantees making full use of for filler.
Description
Technical field
The present invention relates to the application fields of water treatment technology, and in particular to a kind of sulphur iron coupling technique removal nitrate nitrogen it is special
With filler and preparation method thereof.
Background technique
Studies have shown that nitrogen is to lead to one of principal element of water eutrophication, for water eutrophication problem
In processing, the nitrogen content reduced in water becomes the most important thing.Traditional denitrogenation technology is biological nitrification and denitrification, but this technology is anti-
Nitrification needs to consume a large amount of dissolved organic matters i.e. carbon source, and the carbon source wretched insufficiency of landscape water body, denitrification effect are very poor.In recent years
Come, autotrophic denitrification denitrogenation technology is concerned, and compared with traditional denitrogenation technology, autotrophic denitrification technology is not necessarily to external carbon
Source, the advantage with save the cost.It is studied both at home and abroad at present it is most be sulphur/lime stone autotrophic denitrification (SLAD) system
System can obtain energy by the sulphur of redox state under conditions of anoxic or anaerobism using the sulphur of reduction-state as electron donor
Amount, while using nitrate as electron acceptor, it is reduced to nitrogen, to realize autotrophic denitrification process.With this physiology
The bacterium of characteristic includes T.denitrificans, T.pantotrupha etc., and typical metabolic pathway includes simultaneously reduction-state
The oxidation process of sulphur and the reduction process of nitrate are reacted as shown in formula by taking elemental sulfur as an example:
55S+20CO2+50NO3 -+38H2O+4NH4 +→4C5H7O2N+25N2+55SO4 2-+64H+
But this current technology is excessive to raw material sulfur consumption amount, and water outlet sulfate ion is higher, to cause this to be
Secondary pollution of uniting is serious, additionally due to autotrophic microbe multiplication rate is low, leads to reaction starting slowly, hydraulic detention time is too long
Without the engineering value of practical application, autotrophic microbe is to can effectively avoid organic carbon source consumption using inorganic carbon as carbon source, subtract
Few excess sludge production and CO2 emission.Meanwhile Fe autotrophic denitrification is the process of a production alkali, it can be anti-for S autotrophy
Nitrifying process provides basicity, so that maintenance system pH value is constant.Fe can share the load of S as electron donor, significantly reduce sulphur
The production quantity of acid group.Therefore, being used to remove nitrate in low carbon/nitrogen ratio water for S-Fe collaboration autotrophic denitrification has good answer
It is in the prior art that such filler is layered the activity that is filled in autotroph reactor, while will tame with prospect
In sludge seeding to reactor, the sewage containing nitrate is passed through in reactor in order, stand, such filler usage mode by
In sludge bulking easily occurs there are sludge the problem of, while filler position is basicly stable, not can guarantee the abundant benefit of filler
With.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of sulphur iron coupling techniques suitable for various devices to remove nitre state
The filler special of nitrogen, and preparation method thereof, filler is both designed as graininess, filler can be sufficiently stirred, guarantees to fill out
Material makes full use of.
In order to solve the above-mentioned technical problems, the present invention provides a kind of sulphur iron coupling technique removal the dedicated of nitrate nitrogen to fill out
Expect, including simple substance sulphur, lime stone, troilite and denitrifying bacterium immobilization particle, the mass percent range of simple substance sulphur are
40%-60%, the mass percent range of lime stone are 10%-15%, and troilite mass percent range is 15-25%, instead
Nitrification bacteria immobilized particle mass percent range is 30%-40%.
Further, the denitrifying bacterium immobilization particle is cuboid, square or cylindrical body.
Further, the denitrifying bacterium immobilization particle is the cuboid or just that length, width and height are respectively 3-5mm
Cube, the cylindrical body of diameter 3-5mm, high 3-5mm.
Further, the sulphur is graininess, and the partial size of the sulphur is 3-5mm, and the sulfur content in the sulphur is big
In 95%.
Further, the drusen surface is coated with surface modifier, and the surface modifier includes: averagely opposite
The chitosan that molecular mass is 200,000-40 ten thousand.
Further, the troilite is graininess, and the partial size of the troilite is 3-5mm, the sulphur in the troilite
Content is greater than 48%, and iron content is greater than 43%.
Further, the lime stone is graininess, and the partial size of the lime stone is 3-5mm.
Beneficial effects of the present invention:
Filler is both designed as graininess, and filler can be sufficiently stirred, and guarantees making full use of for filler；Denitrifying bacterium
Immobilization particle can maintain the biomass of high concentration in biological reaction apparatus, improve processing capacity, and reaction starting is fast, reduces
Processing unit volume；Good effect of separating solid from liquid does not need special equipment for separating liquid from solid；Stable, resistance to overload shock will not
The operation problems such as sludge bulking occur；A kind of good retention method is provided to grow slow nitrobacteria, microorganism is not
It is easy to run off cell and increases mechanical strength after immobilization.
A kind of preparation method of the filler special of sulphur iron coupling technique removal nitrate nitrogen, comprising the following steps:
Step 1: configuration surface modifying agent, surfactant with have several sections of mixed solution, wherein surface modifier concentration
For 5-10g/L, it is uniformly mixed with sulfur granules, stands infiltration；
It takes out and dries Step 2: taking out the sulfur granules that step 1 obtains, obtaining surface revenge has surface modifier
Sulfur granules；
Step 3: surface obtained in step 2 to be coated with to the drusen and limestone particle, sulphur of surface modifier
Iron ores particle and denitrifying bacterium immobilization particle are uniformly mixed.
Beneficial effects of the present invention: structure is simple, and nitrate nitrogen removal effect is good.
Specific embodiment
The invention will be further described for specific embodiment below, so that those skilled in the art may be better understood
The present invention can be simultaneously practiced, but illustrated embodiment is not as a limitation of the invention.
A kind of filler special of sulphur iron coupling technique removal nitrate nitrogen of the invention, including simple substance sulphur, lime stone, sulphur iron
Mine and denitrifying bacterium immobilization particle, the mass percent range of simple substance sulphur are 40%-60%, the mass percent of lime stone
Range is 10%-15%, and troilite mass percent range is 15-25%, denitrifying bacterium immobilization particle mass percent model
It encloses for 30%-40%.Autotrophic denitrification bacterium utilize lime stone synthetic cell, electron donor of the troilite as nitrate reduction,
To complete denitrification process, denitrifying bacterium immobilization particle provides denitrifying bacteria, completes denitrogenation of waste water.
Further, the denitrifying bacterium immobilization particle is cuboid, square or cylindrical body, facilitates production.
Further, the denitrifying bacterium immobilization particle is the cuboid or just that length, width and height are respectively 3-5mm
Cube, the cylindrical body of diameter 3-5mm, high 3-5mm.Side length is big less than the polyurethane biological active filling material application limitation of 3mm, side
The long polyurethane biological active filling material internal mass transfer greater than 5mm will receive influence and form dead zone, the experimental results showed that, this range is big
Small denitrifying bacterium will not form dead zone inside immobilization particle, and denitrifying bacterium utilization rate is high.
Further, the sulphur is graininess, and the partial size of the sulphur is 3-5mm, and the sulfur content in the sulphur is big
In 95%.
Further, the drusen surface is coated with surface modifier, and the surface modifier includes: averagely opposite
The chitosan that molecular mass is 200,000-40 ten thousand.
Further, the troilite is graininess, and the partial size of the troilite is 3-5mm, the sulphur in the troilite
Content is greater than 48%, and iron content is greater than 43%.
Further, the lime stone is graininess, and the partial size of the lime stone is 3-5mm.Each ingredient makes for graininess
It can uniformly be mixed, it is not in the sludge bulking in activated sludge process and On The Floating that denitrifying bacterium, which is cured as particle,
It is suitble to various reactors to use.
A kind of preparation method of the filler special of sulphur iron coupling technique removal nitrate nitrogen, comprising the following steps:
Step 1: configuration surface modifying agent, surfactant with have several sections of mixed solution, wherein surface modifier concentration
For 5-10g/L, it is uniformly mixed with drusen, stands infiltration；
It takes out and dries Step 2: taking out the drusen that step 1 obtains, obtaining surface revenge has surface modifier
Sulfur granules；
Step 3: surface obtained in step 2 to be coated with to the drusen and limestone particle, sulphur of surface modifier
Iron ores particle and denitrifying bacterium immobilization particle are uniformly mixed.
Embodiment one
Simulation nitrate sewage is handled using filler of the invention.It is respectively 5mm, 4mm, 3mm, 3mm by partial size
Drusen, limestone particle, troilite particle and denitrifying bacterium immobilization particle according to 5:1:2:4 mass ratio mix
Uniformly, it is filled in reactor, sodium nitrate is added with tap water and is configured to the Fluid Dynamics sewage that the concentration of nitrate nitrogen is 60mg/L
Water quality, raw water is through carrying out prolonged agitation to sewage and filler in reactor, sewage is in reactor in peristaltic pump injection reactor
Residence time is 60min, and detection water outlet nitrate nitrogen content is lower than 3mg/L, and removal rate is greater than 95%.It is examined by long-play
It surveys, stable effluent quality can reach discharge standard, and monitoring data are shown in Table 1:
Table 1 is the detection data of embodiment 1
| NO3 --N(mg/L) | TOC(mg/L) | PH value | |
| Water inlet | 59.8 | 3.0 | 7.65 |
| Water outlet | 1.6 | 3.3 | 7.63 |
| Removal rate % | 97.3 | -- | -- |
Embodiment two
Simulation nitrate sewage is handled using filler of the invention.It is respectively 5mm, 3mm, 3mm, 4mm by partial size
Drusen, limestone particle, troilite particle and denitrifying bacterium immobilization particle according to 6:1.5:1.5:5 mass ratio
It is uniformly mixed, is filled in reactor, sodium nitrate is added with tap water and is configured to the Fluid Dynamics that the concentration of nitrate nitrogen is 80mg/L
Sewage quality, raw water is through carrying out prolonged agitation to sewage and filler in reactor, sewage is reacting in peristaltic pump injection reactor
The residence time is 60min in device, and detection water outlet nitrate nitrogen content is lower than 3mg/L, and removal rate is greater than 95%.By long-play
Detection, stable effluent quality can reach discharge standard, and monitoring data are shown in Table 2:
Table 2 is the detection data of embodiment two
Embodiment three
Simulation nitrate sewage is handled using filler of the invention.It is respectively 4mm, 3mm, 4mm, 5mm by partial size
Drusen, limestone particle, troilite particle and denitrifying bacterium immobilization particle according to 4:1:2:5 mass ratio mix
Uniformly, it is filled in reactor, sodium nitrate is added with tap water and is configured to the Fluid Dynamics sewage that the concentration of nitrate nitrogen is 25mg/L
Water quality, raw water is through carrying out prolonged agitation to sewage and filler in reactor, sewage is in reactor in peristaltic pump injection reactor
Residence time is 20min, and detection water outlet nitrate nitrogen content is lower than 1.5mg/L, and removal rate is greater than 95%.It is examined by long-play
It surveys, stable effluent quality can reach discharge standard, and monitoring data are shown in Table 3:
Table 3 is the detection data of embodiment three
| NO3 --N(mg/L) | TOC(mg/L) | PH value | |
| Water inlet | 24.6 | 2.9 | 7.72 |
| Water outlet | 0.9 | 3.3 | 7.67 |
| Removal rate % | 96.3 | -- | -- |
Comparative example
The sulphur that the comparative example uses handles sewage.It is respectively the drusen of 5mm by partial size, to contain autotrophy
The sludge of denitrifying bacterium is filled to autotroph reactor and is inoculated with as kind of a mud, and sodium nitrate is added with tap water and is configured to nitre
The concentration of hydrochlorate nitrogen is the Fluid Dynamics sewage quality of 30mg/L, and raw water is through in peristaltic pump injection reactor, reactor is interior to sewage
Prolonged agitation is carried out with filler, sewage residence time in reactor is 25min, and the concentration of detection water outlet nitrate nitrogen is 3mg/
L, removal rate 90%.It is detected by long-play, stable effluent quality, discharge standard can be reached, monitoring data are shown in Table
4:
Claims (8)
1. a kind of filler special of sulphur iron coupling technique removal nitrate nitrogen, which is characterized in that including simple substance sulphur, lime stone, sulphur
Iron ore and denitrifying bacterium immobilization particle, the mass percent range of simple substance sulphur are 40%-60%, the quality percentage of lime stone
It is 10%-15% than range, troilite mass percent range is 15-25%, denitrifying bacterium immobilization particle mass percent
Range is 30%-40%.
2. a kind of filler special of sulphur iron coupling technique removal nitrate nitrogen as described in claim 1, which is characterized in that described anti-
Nitrification bacteria immobilized particle is cuboid, square or cylindrical body.
3. a kind of filler special of sulphur iron coupling technique removal nitrate nitrogen as claimed in claim 2, which is characterized in that described
The denitrifying bacterium immobilization particle is the cuboid or square that length, width and height are respectively 3-5mm, diameter 3-5mm, high 3-5mm
Cylindrical body.
4. a kind of filler special of sulphur iron coupling technique removal nitrate nitrogen as described in claim 1, which is characterized in that the sulphur
Sulphur is graininess, and the partial size of the sulphur is 3-5mm, and the sulfur content in the sulphur is greater than 95%.
5. a kind of filler special of sulphur iron coupling technique removal nitrate nitrogen as claimed in claim 4, which is characterized in that the sulphur
Sulphur particle surface is coated with surface modifier, and the surface modifier includes: the shell that average molecular mass is 200,000-40 ten thousand
Glycan.
6. a kind of filler special of sulphur iron coupling technique removal nitrate nitrogen as described in claim 1, which is characterized in that the sulphur
Iron ore is graininess, and the partial size of the troilite is 3-5mm, and the sulfur content in the troilite is greater than 48%, and iron content is greater than
43%.
7. a kind of filler special of sulphur iron coupling technique removal nitrate nitrogen as described in claim 1, which is characterized in that the stone
Lime stone is graininess, and the partial size of the lime stone is 3-5mm.
8. such as a kind of described in any item preparation sides of the filler special of sulphur iron coupling technique removal nitrate nitrogen claim 1-7
Method, which comprises the following steps:
Step 1: configuration surface modifying agent, surfactant and the mixed solution for having several sections, wherein surface modifier concentration is 5-
It is uniformly mixed by 10g/L with sulfur granules, stands infiltration；
It takes out and dries Step 2: taking out the sulfur granules that step 1 obtains, obtain the Sulfur that surface revenge has surface modifier
Particle；
Step 3: surface obtained in step 2 to be coated with to the drusen and limestone particle, troilite of surface modifier
Particle and denitrifying bacterium immobilization particle are uniformly mixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910168556.4A CN109879419A (en) | 2019-03-06 | 2019-03-06 | The filler special and preparation method thereof of sulphur iron coupling technique removal nitrate nitrogen |
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| CN201910168556.4A CN109879419A (en) | 2019-03-06 | 2019-03-06 | The filler special and preparation method thereof of sulphur iron coupling technique removal nitrate nitrogen |
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ID=66931018
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500487A (en) * | 2017-10-09 | 2017-12-22 | 云南新联环境科技有限公司 | A kind of underground water adds sulphur cleaning system and its method for purifying phreatic water |
| CN110697888A (en) * | 2019-10-12 | 2020-01-17 | 北京恩菲环保股份有限公司 | Sulfur preparation and method for removing nitrate nitrogen in water |
| CN111320268A (en) * | 2020-03-12 | 2020-06-23 | 河海大学 | Autotrophic and heterotrophic synergetic denitrification nitrogen removal method |
| CN111977910A (en) * | 2020-08-27 | 2020-11-24 | 重庆大学 | Rainwater runoff treatment substrate and rainwater bioretention pool constructed by same |
| CN112499759A (en) * | 2020-12-10 | 2021-03-16 | 泉州南京大学环保产业研究院 | Nitrogen and phosphorus removal foaming filler and preparation method thereof |
| CN113044961A (en) * | 2021-03-02 | 2021-06-29 | 无锡映川环境技术有限公司 | Carrier with autotrophic denitrification function and preparation method thereof |
| CN113998781A (en) * | 2021-12-31 | 2022-02-01 | 河北海鹰环境安全科技股份有限公司 | Sewage autotrophic denitrification treatment process |
| CN114057283A (en) * | 2021-09-10 | 2022-02-18 | 南京华创环境技术研究院有限公司 | Light nitrogen and phosphorus removal filler utilizing pyrite to modify waste polyurethane and preparation method thereof |
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| CN104925944A (en) * | 2015-05-19 | 2015-09-23 | 湖北大学 | Denitrifying filler, preparation method of denitrifying filler and application of denitrifying filler to denitrification of water body |
| CN109052641A (en) * | 2018-09-05 | 2018-12-21 | 南京大学 | A kind of coupling filler autotrophic denitrification biofilter and application |
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| CN104925944A (en) * | 2015-05-19 | 2015-09-23 | 湖北大学 | Denitrifying filler, preparation method of denitrifying filler and application of denitrifying filler to denitrification of water body |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500487A (en) * | 2017-10-09 | 2017-12-22 | 云南新联环境科技有限公司 | A kind of underground water adds sulphur cleaning system and its method for purifying phreatic water |
| CN110697888A (en) * | 2019-10-12 | 2020-01-17 | 北京恩菲环保股份有限公司 | Sulfur preparation and method for removing nitrate nitrogen in water |
| CN110697888B (en) * | 2019-10-12 | 2022-05-24 | 北京恩菲环保股份有限公司 | Sulfur preparation and method for removing nitrate nitrogen in water |
| CN111320268A (en) * | 2020-03-12 | 2020-06-23 | 河海大学 | Autotrophic and heterotrophic synergetic denitrification nitrogen removal method |
| CN111977910A (en) * | 2020-08-27 | 2020-11-24 | 重庆大学 | Rainwater runoff treatment substrate and rainwater bioretention pool constructed by same |
| CN112499759A (en) * | 2020-12-10 | 2021-03-16 | 泉州南京大学环保产业研究院 | Nitrogen and phosphorus removal foaming filler and preparation method thereof |
| CN112499759B (en) * | 2020-12-10 | 2022-07-08 | 泉州南京大学环保产业研究院 | Nitrogen and phosphorus removal foaming filler and preparation method thereof |
| CN113044961A (en) * | 2021-03-02 | 2021-06-29 | 无锡映川环境技术有限公司 | Carrier with autotrophic denitrification function and preparation method thereof |
| CN113044961B (en) * | 2021-03-02 | 2023-03-31 | 无锡映川环境技术有限公司 | Carrier with autotrophic denitrification function and preparation method thereof |
| CN114057283A (en) * | 2021-09-10 | 2022-02-18 | 南京华创环境技术研究院有限公司 | Light nitrogen and phosphorus removal filler utilizing pyrite to modify waste polyurethane and preparation method thereof |
| CN113998781A (en) * | 2021-12-31 | 2022-02-01 | 河北海鹰环境安全科技股份有限公司 | Sewage autotrophic denitrification treatment process |
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