CN112723523A - Carbon-source-free synchronous nitrogen and phosphorus removal filler based on composite sulfur component, and preparation method and application thereof - Google Patents
Carbon-source-free synchronous nitrogen and phosphorus removal filler based on composite sulfur component, and preparation method and application thereof Download PDFInfo
- Publication number
- CN112723523A CN112723523A CN202011394565.4A CN202011394565A CN112723523A CN 112723523 A CN112723523 A CN 112723523A CN 202011394565 A CN202011394565 A CN 202011394565A CN 112723523 A CN112723523 A CN 112723523A
- Authority
- CN
- China
- Prior art keywords
- filler
- powder
- nitrogen
- phosphorus removal
- sulfur
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 84
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 42
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 42
- 239000011574 phosphorus Substances 0.000 title claims abstract description 42
- 239000000945 filler Substances 0.000 title claims abstract description 40
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 19
- 239000011593 sulfur Substances 0.000 title claims abstract description 19
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229910052683 pyrite Inorganic materials 0.000 claims abstract description 30
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011028 pyrite Substances 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000005060 rubber Substances 0.000 claims abstract description 12
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 7
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000000280 densification Methods 0.000 claims description 4
- 244000005700 microbiome Species 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 18
- 230000001651 autotrophic effect Effects 0.000 description 15
- 230000014759 maintenance of location Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 239000010802 sludge Substances 0.000 description 9
- -1 nitrite ions Chemical class 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 230000002572 peristaltic effect Effects 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000032770 biofilm formation Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052960 marcasite Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
-
- 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
Abstract
The invention discloses a carbon-source-free synchronous nitrogen and phosphorus removal filler based on a composite sulfur component, and a preparation method and application thereof, and belongs to the field of environmental protection. The filler takes at least one of styrene butadiene rubber, nitrile rubber and butadiene rubber as a rubber skeleton structure, and sulfur powder and pyrite powder are loaded on the rubber skeleton structure, so that a target product is obtained. Compared with natural nitrogen and phosphorus removal filler, the filler disclosed by the invention is small in specific gravity and convenient to fill in engineering, and the load proportion of effective components exposed on the surface of the filler is increased, so that the attachment and reaction points of microorganisms are greatly increased, and the reaction efficiency of nitrogen and phosphorus removal is improved.
Description
Technical Field
The invention relates to the field of environmental protection, and in particular relates to a carbon-source-free synchronous nitrogen and phosphorus removal filler based on a composite sulfur component, and a preparation method and application thereof.
Background
Eutrophication is considered as one of the most important global water quality problems, and the excessive input of nutrient substances outside the water body, particularly nitrogen and phosphorus, which are nutrient elements of algae reproduction control plants, is the main reason. How to economically and efficiently remove nitrogen and phosphorus elements in various water bodies becomes a focus of attention and a research hotspot of environmental workers. In the traditional wastewater treatment processes, SBR, A2/O and UCT processes and fillers thereof need to add an external high-efficiency degradation carbon source when the C/N ratio of inlet water is lower, so that the microbial flora can reduce nitrate or nitrite ions in water to form nitrogen by using organic carbon as an electron donor, and nitrogen elements in the water are removed; the phosphorus is removed mainly by various coagulation adsorbents or bacteria mud formed by the growth of microorganisms. Since the 70 s in the 20 th century, Bisogni J et al proposed the idea of replacing the traditional denitrification process with an autotrophic denitrification process, and completed the denitrification process by synthesizing cells with inorganic carbon by autotrophic denitrifying bacteria and reducing electron donors with inorganic substances as nitrates. In recent years, the autotrophic denitrification process is extensively and deeply researched, and considerable progress is made in the aspects of microbiology principle, regulation, stable operation and the like. The autotrophic denitrification has the characteristics of no need of external carbon source and low sludge yield, so that the autotrophic denitrification has the advantage of low operation cost and is increasingly paid more attention by people.
Natural sulfur and pyrite (FeS)2) The method is the most abundant source of reduced sulfur minerals in the nature, the autotrophic denitrification biological filter is constructed by taking natural sulfur and pyrite as basic fillers, nitrate and nitrite in organic matter wastewater can be removed by autotrophic denitrifying bacteria enriched in anoxic sludge, and iron ions dissolved out of pyrite can be combined with phosphate radical in water to form iron phosphate precipitate, so that various nitrates, nitrites and phosphate radicals with higher concentration can be synchronously treated.
Microorganisms can utilize dissolved oxygen in water to enable pyrite (FeS) in water environment2) The iron ions and the low valence sulfur are released in the oxidation reaction, but the chemical bonds of the sulfur ions in the crystal structure of the pyrite are relatively highStrong, the reaction activity of the common pyrite and the phosphate radical ion is very low. Research finds that the denitrification rate of autotrophic microorganisms depends on the surface area of the biological filter medium, and the porous structure is beneficial to adsorption and immobilization of microorganism cells, so that the utilization of the microorganisms to ores is promoted. The specific surface area of the natural pyrite is smaller than that of other porous materials, the microbial load is smaller, so that the hydraulic retention time required by denitrification is longer, and meanwhile, the filler is difficult to replace and arrange due to the fact that the density of the pyrite is higher. Therefore, it is necessary to modify and compound natural pyrite to increase the reactivity and reaction efficiency.
In recent years, autotrophic denitrification, particularly sulfur autotrophic denitrification, is a novel denitrification technology which uses low-valence-state sulfur to replace a carbon source as an electron donor, uses nitrate or nitrite in water as an electron acceptor, realizes denitrification under the action of autotrophic denitrifying bacteria, has the advantages of carbon source consumption saving, low sludge yield and the like, and uses nano FeS2The method has the advantages of high reaction rate and short retention time when used as an electron donor for microbial denitrification, but the requirements on preparation technology and energy consumption of the nanoparticles are high, and the potential risks brought by the nanoparticles to the environment and human health are worried.
In the prior art, a plurality of sewage treatment methods exist, and some conventional biochemical treatment processes can effectively reduce organic pollutants, suspended matters, partial nitrogen, phosphorus and other plant nutrient elements of sewage, but for wastewater containing low-concentration organic matters, the nitrogen and phosphorus removal rate is not high, and carbon sources and chemical precipitating agents are required to be added to effectively remove nitrogen and phosphorus, but the method not only increases the treatment cost and improves the sludge yield, but also increases the risk of secondary pollution due to excessive carbon sources and precipitating agents. Therefore, the prior art discloses a synchronous nitrogen and phosphorus removal material consisting of sulfur and iron components, the nitrogen and phosphorus removal material is used as a filler of a sewage treatment fluidized bed, a fixed bed reactor and an artificial wetland, and nitrogen and phosphorus pollutants in sewage are removed through the action depth of microorganisms. The release amount of the sulfur is difficult to effectively regulate and control due to the molten liquid molding.
Therefore, it is a problem worth studying to improve the existing production process of the filler for nitrogen and phosphorus removal, especially the filler for nitrogen and phosphorus removal and the production process thereof which are generally desirable in material selection, and conveniently regulate and control the release of sulfur.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a carbon-source-free synchronous nitrogen and phosphorus removal filler based on a composite sulfur component, and a preparation method and application thereof.
The purpose of the invention can be realized by the following technical scheme:
the filler uses at least one of butadiene styrene rubber, nitrile rubber and butadiene rubber as a rubber skeleton structure, and loads sulfur powder and pyrite powder on the rubber skeleton structure, thereby obtaining a target product.
Among the fillers: the mass ratio of the pyrite powder to the sulfur powder to the rubber skeleton structure is (5-30): (50-80): (10-20).
A preparation method of the carbon-source-free synchronous nitrogen and phosphorus removal filler based on the composite sulfur component comprises the following steps:
the method comprises the following steps: fully mixing the pyrite powder, the sulfur powder and the rubber skeleton structure;
step two: the mixture evenly mixed in the step one is subjected to densification;
step three: putting the compacted mixture obtained in the step two into an extruder-granulator system for granulation and molding;
step four: and (4) putting the particles prepared in the third step into a cyclone cooler for cooling and drying to obtain the target product.
The method comprises the following steps: the particle size of the pyrite powder is 200-80 meshes, and the particle size of the sulfur powder is 200-80 meshes.
The method comprises the following steps: the temperature for densification is 75-90 ℃.
The method comprises the following steps: the pressure for granulating and extruding is 5-10 MPa.
The method comprises the following steps: the cooling and drying time in the cyclone cooler is 2-8 minutes.
The method comprises the following steps: the size of the granulated and formed particles is 3-8 mm.
The method comprises the following steps: the mass ratio of the pyrite powder to the sulfur powder to the rubber skeleton structure is (5-30): (50-80): (10-20).
The filler provided by the technical scheme of the invention is applied to the aspect of removing nitrogen and phosphorus in sewage.
The technical scheme of the invention is as follows: the pressure is a gauge pressure by default unless otherwise specified.
The invention has the beneficial effects that:
the invention is applied to the synchronous nitrogen and phosphorus removal process, can greatly save the addition of an external carbon source and a phosphorus removal medicament, avoids the waste of resources, has the advantages of low sludge yield, short hydraulic retention time, low effluent sulfate, no occurrence of hardening of iron ore fillers in the use process and the like, and has good development and application prospects in the field of sewage treatment, particularly for the deep removal of total nitrogen and total phosphorus in municipal and industrial secondary effluent. Compared with natural nitrogen and phosphorus removal filler, the filler disclosed by the invention is small in specific gravity and convenient to fill in engineering, and the load proportion of effective components exposed on the surface of the filler is increased, so that the attachment and reaction points of microorganisms are greatly increased, and the reaction efficiency of nitrogen and phosphorus removal is improved.
Drawings
FIG. 1 is a diagram of a pyrite composite filler for simultaneous denitrification and dephosphorization prepared in example 1.
FIG. 2 is a graph of the total nitrogen removal data for the filler prepared in example 1.
Figure 3 is a graph of filler total phosphorus removal data obtained from example preparation.
FIG. 4600 m3A site diagram of a/d synchronous denitrification and dephosphorization treatment device.
Detailed Description
The invention is further illustrated by the following examples, without limiting the scope of the invention:
example 1
Step one, mixing pyrite powder (100 meshes), sulfur powder (100 meshes) and styrene butadiene rubber according to a mass ratio of 1: 8: 1, fully mixing;
step two, the mixture evenly mixed in the step one is completely densified at the temperature of 75 ℃;
thirdly, putting the compacted mixture obtained in the second step into an extruder-granulator system for granulation molding (the pressure of the extruder is 8MPa), and preparing 3mm particles;
and step four, putting the particles prepared in the step three into a cyclone cooler for cooling and drying for 5 minutes, wherein the target product is shown in figure 1.
Example 2
Step one, mixing pyrite powder (80 meshes), sulfur powder (100 meshes) and nitrile rubber particles according to a mass ratio of 13: 75: 12, fully mixing;
step two, the mixture evenly mixed in the step one is completely densified at the temperature of 80 ℃;
thirdly, putting the compacted mixture obtained in the second step into an extruder-granulator system for granulation molding (the pressure of the extruder is 10MPa), and preparing into 5mm particles;
and step four, putting the particles prepared in the step three into a cyclone cooler for cooling and drying for 6 minutes.
Example 3
Step one, mixing pyrite powder (100 meshes), sulfur powder (150 meshes) and butadiene rubber particles according to a mass ratio of 2: 7: 1, fully mixing;
step two, the mixture evenly mixed in the step one is completely densified at 85 ℃;
thirdly, putting the compacted mixture obtained in the second step into an extruder-granulator system for granulation molding (the pressure of the extruder is 6MPa), and preparing 6mm particles;
and step four, putting the particles prepared in the step three into a cyclone cooler for cooling and drying for 8 minutes.
The synchronous nitrogen and phosphorus removal composite pyrite filler prepared by the embodiment is selected to treat simulated wastewater, and is applied as follows:
application example 1
The synchronous nitrogen and phosphorus removal composite pyrite filler prepared by the method in the embodiment 1 is used for treating tail water of a certain urban sewage treatment plant. Filling the filler into a reactor, and starting the film formation for 2-5 d. Pumping tail water of a sewage treatment plant into a reactor by using a peristaltic pump, keeping the hydraulic retention time of the sewage in the reactor at 45min (the retention time of the existing autotrophic denitrification technology is 2-4 h), and monitoring the total nitrogen and the total phosphorus of effluent. After 6 months of continuous operation, the effluent quality is stable and reaches the standard of IV-class water on the earth surface, the total phosphorus concentration of the effluent is less than 0.1mg/L, the total nitrogen concentration of the effluent is less than 1.5mg/L, and the monitoring data is shown in figure 2 and figure 3. The sludge yield is 0.15 kg/ton water, and the effluent sulfate is less than 1 mg/L.
Application example 2
The synchronous nitrogen and phosphorus removal composite pyrite filler prepared by the method in the embodiment 2 is used for treating tail water of a certain urban sewage treatment plant. Filling the filler into a reactor, and starting the film formation for 2-7 d. Pumping tail water of a sewage treatment plant into a reactor by using a peristaltic pump, keeping the hydraulic retention time of the sewage in the reactor to be 50min (the retention time of the existing autotrophic denitrification technology is 2-4 h), and monitoring the total nitrogen and the total phosphorus of effluent. After 6 months of continuous operation, the effluent quality is stable and reaches the standard of IV-class water on the earth surface, the total phosphorus concentration of the effluent is less than 0.2mg/L, and the total nitrogen concentration of the effluent is less than 1.5 mg/L. The sludge yield is 0.20 kg/ton water, and the effluent sulfate is less than 1.2 mg/L.
Application example 3
The synchronous nitrogen and phosphorus removal composite pyrite filler prepared by the method in the embodiment 3 is used for treating tail water of a certain urban sewage treatment plant. Filling the filler into a reactor, and starting the film formation for 2-6 d. Pumping tail water of a sewage treatment plant into a reactor by using a peristaltic pump, keeping the hydraulic retention time of the sewage in the reactor to be 55min (the retention time of the existing autotrophic denitrification technology is 2-4 h), and monitoring the total nitrogen and the total phosphorus of effluent. After 6 months of continuous operation, the effluent quality is stable and reaches the standard of IV-class water on the earth surface, the total phosphorus concentration of the effluent is less than 0.15mg/L, and the total nitrogen concentration of the effluent is less than 1.5 mg/L. The sludge yield is 0.15 kg/ton water, and the effluent sulfate is less than 1.1 mg/L.
Application example 4
In the following example 1The synchronous denitrification and dephosphorization composite pyrite filler prepared by the method is used for carrying out on-site industrial treatment on the tail water of a certain urban sewage treatment plant, and the treatment capacity is 600m3D, filling the filler into a reactor with the diameter of 2m multiplied by 5.5m, and starting the biofilm formation for 7-10 d. Sending tail water of a secondary sedimentation tank of a sewage treatment plant into a reactor by using a self-priming pump, feeding the tail water into the reactor in a water feeding mode, keeping the hydraulic retention time of sewage in the reactor to be 60min (the retention time of the existing autotrophic denitrification technology is 2-4 h), and taking a photograph of an engineering field as shown in figure 4; and monitoring the total nitrogen and the total phosphorus in the effluent. After 6 months of continuous operation, the effluent quality is stable and reaches the standard of IV-class water on the earth surface, the total phosphorus concentration of the effluent is less than 0.15mg/L, and the total nitrogen concentration of the effluent is less than 1.5 mg/L. The sludge yield is 0.22 kg/ton water, and the effluent sulfate is less than 1.3 mg/L.
Claims (10)
1. The carbon-source-free synchronous nitrogen and phosphorus removal filler based on the composite sulfur component is characterized in that: the filler takes at least one of styrene butadiene rubber, nitrile rubber and butadiene rubber as a rubber skeleton structure, and sulfur powder and pyrite powder are loaded on the rubber skeleton structure, so that a target product is obtained.
2. The carbon-source-free synchronous nitrogen and phosphorus removal filler based on composite sulfur components as claimed in claim 1, is characterized in that: the mass ratio of the pyrite powder to the sulfur powder to the rubber skeleton structure is (5-30): (50-80): (10-20).
3. The preparation method of the composite sulfur component-based carbon source-free synchronous nitrogen and phosphorus removal filler disclosed by claim 1 is characterized by comprising the following steps of: the preparation method comprises the following steps:
the method comprises the following steps: fully mixing the pyrite powder, the sulfur powder and the rubber skeleton structure;
step two: the mixture evenly mixed in the step one is subjected to densification;
step three: putting the compacted mixture obtained in the step two into an extruder-granulator system for granulation and molding;
step four: and (4) putting the particles prepared in the third step into a cyclone cooler for cooling and drying to obtain the target product.
4. The production method according to claim 3, characterized in that: the particle size of the pyrite powder is 200-80 meshes, and the particle size of the sulfur powder is 200-80 meshes.
5. The production method according to claim 3, characterized in that: the temperature for densification is 75-90 ℃.
6. The production method according to claim 3, characterized in that: the pressure for granulating and extruding is 5-10 MPa.
7. The production method according to claim 3, characterized in that: the cooling and drying time in the cyclone cooler is 2-8 minutes.
8. The production method according to claim 3, characterized in that: the size of the granulated and formed particles is 3-8mm, and the bulk density is 1.1-1.2.
9. The production method according to claim 3, characterized in that: the mass ratio of the pyrite powder to the sulfur powder to the rubber skeleton structure is (5-30): (50-80): (10-20).
10. Use of the filler according to claim 1 or 2 for removing nitrogen and phosphorus from contaminated water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011394565.4A CN112723523A (en) | 2020-12-03 | 2020-12-03 | Carbon-source-free synchronous nitrogen and phosphorus removal filler based on composite sulfur component, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011394565.4A CN112723523A (en) | 2020-12-03 | 2020-12-03 | Carbon-source-free synchronous nitrogen and phosphorus removal filler based on composite sulfur component, and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112723523A true CN112723523A (en) | 2021-04-30 |
Family
ID=75598392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011394565.4A Pending CN112723523A (en) | 2020-12-03 | 2020-12-03 | Carbon-source-free synchronous nitrogen and phosphorus removal filler based on composite sulfur component, and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112723523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478735A (en) * | 2003-07-23 | 2004-03-03 | 王文兵 | Active microorganism carrier for use in biological treatment |
| CN101693775A (en) * | 2009-10-21 | 2010-04-14 | 北京国电富通科技发展有限责任公司 | Fixed microbe rubber granule filler, preparation and application thereof |
| CN107176702A (en) * | 2017-07-31 | 2017-09-19 | 南京大学 | A kind of sewage water treatment method for strengthening sulphur autotrophic denitrification process synchronous denitrification dephosphorizing |
| CN110655185A (en) * | 2018-12-07 | 2020-01-07 | 江苏省环境科学研究院 | Novel denitrification filter tank denitrification method for treating waste by waste |
| CN111547839A (en) * | 2020-04-07 | 2020-08-18 | 水艺控股集团股份有限公司 | Composite sulfur-based porous filler |
| US20200338485A1 (en) * | 2019-04-23 | 2020-10-29 | Nanjing University | Method for preparing simultaneous nitrogen and phosphorus removal lightweight material and the use thereof |
-
2020
- 2020-12-03 CN CN202011394565.4A patent/CN112723523A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478735A (en) * | 2003-07-23 | 2004-03-03 | 王文兵 | Active microorganism carrier for use in biological treatment |
| CN101693775A (en) * | 2009-10-21 | 2010-04-14 | 北京国电富通科技发展有限责任公司 | Fixed microbe rubber granule filler, preparation and application thereof |
| CN107176702A (en) * | 2017-07-31 | 2017-09-19 | 南京大学 | A kind of sewage water treatment method for strengthening sulphur autotrophic denitrification process synchronous denitrification dephosphorizing |
| CN110655185A (en) * | 2018-12-07 | 2020-01-07 | 江苏省环境科学研究院 | Novel denitrification filter tank denitrification method for treating waste by waste |
| US20200338485A1 (en) * | 2019-04-23 | 2020-10-29 | Nanjing University | Method for preparing simultaneous nitrogen and phosphorus removal lightweight material and the use thereof |
| CN111547839A (en) * | 2020-04-07 | 2020-08-18 | 水艺控股集团股份有限公司 | Composite sulfur-based porous filler |
Non-Patent Citations (2)
| Title |
|---|
| 加气混凝土协会 编: "《加气混凝土创新与发展 2017》", 中国建材工业出版社, pages: 101 * |
| 滕济林 等: "流动床生物膜处理技术在市政污水处理厂中的工程应用", 《中国建设信息(水工业市场)》, 31 March 2009 (2009-03-31), pages 34 - 37 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114230021B (en) | Biological composite filler and preparation method and application thereof | |
| CN110818077B (en) | Biological filter material based on sulfur-containing tailings and preparation method and application thereof | |
| CN103801254A (en) | Siderite-based nitrogen and phosphorus removal material and application method thereof | |
| CN111137973A (en) | Denitrification functional filler, filler ball, filling method and application | |
| CN110963644B (en) | High-nitrate industrial wastewater denitrification pretreatment system, method and application thereof | |
| CN110615534A (en) | Sulfur-iron autotrophic denitrification device and application thereof | |
| CN114195259A (en) | Low-carbon nitrate wastewater efficient purification device system based on mixed matrix and purification treatment method | |
| CN101054250A (en) | Technique for treating garbage percolate by combinated physicochemistry and organism bacterium | |
| CN103709694A (en) | Technology for degrading perchlorate in water and used degradable composite material | |
| Wang et al. | Accelerating the granulation of anammox sludge in wastewater treatment with the drive of “micro-nuclei”: A review | |
| CN100519440C (en) | Method for treating wastewater by technique of sludge decrement type biomembrane piled ball packing | |
| Xu et al. | Granulation of partial denitrification sludge: Advances in mechanism understanding, technologies development and perspectives | |
| CN110282749A (en) | A kind of simulated wastewater and method of fast culture autotrophic denitrification Thiobacillus sludge | |
| CN112723523A (en) | Carbon-source-free synchronous nitrogen and phosphorus removal filler based on composite sulfur component, and preparation method and application thereof | |
| CN113149350A (en) | Chelated biological catalytic particles for in-situ restoration of water body and preparation method thereof | |
| CN109650543B (en) | SPNA integrated denitrification method for treating low-matrix wastewater under continuous flow condition | |
| CN103508564A (en) | Embedded immobilized microorganism deep denitrification reactor and method | |
| CN114835255B (en) | Composite bioreactor based on iron-carbon carrier and preparation and sewage treatment method thereof | |
| CN103848497A (en) | Device and method for treating waste water by cultivating and utilizing aerobic granular sludge | |
| Zhang et al. | Swine wastewater treatment by combined process of iron carbon microelectrolysis-physical adsorption-microalgae cultivation | |
| CN113522228B (en) | Light material for synchronous denitrification and chromium removal and preparation method and application thereof | |
| CN105731636A (en) | Method for rapidly cultivating aerobic granular sludge | |
| CN113044961B (en) | Carrier with autotrophic denitrification function and preparation method thereof | |
| CN113860488A (en) | Method and device for culturing anaerobic ammonium oxidation bacteria particles | |
| Wang et al. | Rapid start-up and long-term stable operation of the anammox reactor based on biofilm process: Status, challenges, and perspectives |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |
|
| RJ01 | Rejection of invention patent application after publication |