CN113788528A - Water treatment micro filler and preparation method thereof - Google Patents
Water treatment micro filler and preparation method thereof Download PDFInfo
- Publication number
- CN113788528A CN113788528A CN202111069740.7A CN202111069740A CN113788528A CN 113788528 A CN113788528 A CN 113788528A CN 202111069740 A CN202111069740 A CN 202111069740A CN 113788528 A CN113788528 A CN 113788528A
- Authority
- CN
- China
- Prior art keywords
- filler
- water treatment
- micro
- porous
- metal
- 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.)
- Granted
Links
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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention belongs to the technical field of biological sewage treatment, and particularly relates to a micro filler for water treatment and a preparation method thereof. The water treatment microfiller includes: porous micro-filler, metal-based nano-chemical material and nitrogen chemical agent. The invention selects the porous micro-filler with proper specific gravity, utilizes the characteristic of large specific surface area of the porous filler, and attaches the metal-based nano-chemical material and the nitrogen chemical agent to the surface of the porous micro-filler in a dry powder (or solution) mixing and stirring mode. The main functions of the treatment agent are: the biomass and settleability of the biological pond can be effectively improved; meanwhile, the retention of denitrification functional bacteria with longer generation period in the water treatment system is facilitated; the structure of the flora can be adjusted, and the autotrophic denitrification rate of a water treatment biological system is improved; and finally, energy conservation and consumption reduction of the regenerated water plant are promoted.
Description
Technical Field
The invention belongs to the technical field of biological sewage treatment, and particularly relates to a water treatment micro filler and a preparation method thereof.
Background
The activated sludge process is still the most economical current method of wastewater treatment. However, as the discharge standard of sewage plants is continuously improved along with the annual increase of the sewage amount, more and more sewage plants tend to saturate the treatment load, and how to improve the pollutant removal load of the biological pool is a big problem faced by the current sewage treatment industry. Wherein, the adding of various types of fixed fillers is that nitrifying bacteria and other microorganisms with longer generation period are retained in the biological pond, so that the biomass of the biological pond can be obviously improved, and the biochemical treatment efficiency is further improved. But the specific surface area of the immobilized filler is still small, and the installation and transportation cost is high; the service life is long, and the recycling performance is poor; meanwhile, the packing is blocked in operation, so that the dead zone of the biological pond is increased. In addition, the porous micro filler has large specific surface area, good compatibility with activated sludge and strong fluidity, so that more nitrification and denitrification floras can be carried, rich biological diversity is provided, and better sewage treatment effect is obtained.
Disclosure of Invention
The invention aims to solve the problems and provides a water treatment micro filler and a preparation method thereof, which are used for overcoming the defects of the existing biological filler and can effectively improve the biomass of a biological pond and the autotrophic nitrogen removal efficiency.
To achieve the above object, a first aspect of the present invention provides a water-treatment microfiller, comprising:
porous micro-filler, metal-based nano-chemical material and nitrogen chemical agent.
Preferably, the mass ratio of the porous microfiller, the metal-based nano-chemical material, and the nitrogen-based chemical agent is 1: 0.0001-0.1: 0.001-1.0.
In a further preferred embodiment, the mass ratio of the porous microfiller, the metal-based nano-chemical material, and the nitrogen-based chemical agent is 1: 0.005-0.05: 0.06-0.6.
Preferably, the porous microfiller is at least one selected from tourmaline powder, chitosan, coral powder, diatomite, powdered activated carbon, kaolin, silicon carbide and graphene oxide.
Preferably, in order to obtain a more suitable porous microfiller, the porous microfiller is ground and screened so that the bulk density of the porous microfiller is 0.35 to 1.1g/m3The pore volume is 0.35-1.0mL/g, the number of pores is 500-1300/g, and the surface area of all micropores is 50-1000 m2Per g, the equivalent particle diameter is 15-100 μm.
Preferably, the metal-based nano-chemical material is at least one selected from the group consisting of an iron-based compound, a copper-based compound, and a cobalt-based compound.
In a further preferred embodiment, the iron-based compound is selected from Fe3O4、Fe2O3、FeCl3、 FeSO4And at least one of the respective solutions.
In a further preferred embodiment, the copper-based compound is selected from the group consisting of CuCL2、CuSO4And at least one of the respective solutions.
As a further preferable mode, the cobalt-based compound is selected from CoCL2And a solution thereof.
Preferably, the nitrogen-based chemical agent is selected from at least two of hydroxylamine, hydroxylamine-based compounds, hydrazine-based compounds, EDTA-based compounds, and solutions thereof.
According to the invention, the metal-based nano-chemical material is a solid with a particle size of 0.01-10 μm and/or a solution with a mass concentration of 5% -40%; the solution is more preferably a saturated solution of the metal-based nano-chemical material.
According to the invention, the nitrogen chemical agent is a solid with the grain diameter of 0.01-10 μm and/or a solution with the mass concentration of 10% -60%; more preferably, the solution is a saturated solution of the nitrogenous chemical.
According to the present invention, the storage state of the water treatment micro filler may be in a dry powder or liquid form.
The second aspect of the present invention provides a method for preparing the above water treatment microfiller, the method comprising: the porous micro-filler, the metal-based nano-chemical material and the nitrogen chemical agent are uniformly mixed, and the metal-based nano-chemical material and the nitrogen chemical agent are adsorbed on the porous micro-filler under the action of surface energy. Before use, the porous micro-filler can be compounded with three materials of metal-based nano-chemical materials and nitrogen chemical agents in proportion in a specific container or a biological pond dosing point.
The water treatment micro filler prepared by the invention is stored in a cool and dry place, is not suitable for contacting with alkaline substances, and is not suitable for being stored for more than 180 days at normal temperature.
The invention has the beneficial effects that:
1) the biomass and biodiversity of the biological pond can be obviously improved: the water treatment micro filler can provide an attachment foundation for floc sludge, enrich more microorganisms with longer generation period, and obviously improve the biomass of a biological pond.
2) The treatment load of the biological pond can be obviously improved: the water treatment micro-filler can obviously improve the denitrification autotrophic bacteria such as ammonia nitrogen oxidizing bacteria, anaerobic ammonium oxidation bacteria and the like in the biological tank, improve the denitrification efficiency of the biological tank, and obviously improve the removal load of the biological tank on various pollutants without changing the tank capacity.
3) The suspended sludge settling property can be obviously improved: the water treatment micro filler can effectively improve the specific gravity of sludge, so that the sludge and water can be quickly separated in the sedimentation tank, the height of a sludge layer of the secondary sedimentation tank is reduced, and the stable operation performance of the secondary sedimentation tank is improved.
4) Is generally applied to various sewage biological treatment processes. The water treatment micro-filler is suitable for various current sewage biological treatment processes, takes the efficient retention of the micro-filler into consideration, and is particularly suitable for sequencing batch bioreactors and membrane bioreactors.
The invention selects the porous micro-filler with proper specific gravity, utilizes the characteristic of large specific surface area of the porous filler, and attaches the metal-based nano-chemical material and the nitrogen chemical agent to the surface of the porous micro-filler in a dry powder (or solution) mixing and stirring mode. The main functions of the treatment agent are: the biomass and settleability of the biological pond can be effectively improved; meanwhile, the retention of denitrification functional bacteria with longer generation period in the water treatment system is facilitated; the structure of the flora can be adjusted, and the autotrophic denitrification rate of a water treatment biological system is improved; and finally, energy conservation and consumption reduction of the regenerated water plant are promoted.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a pictorial representation of a water treatment microfiller made in accordance with one embodiment of the present invention
FIG. 2 is a graph showing the results of the water treatment microfiller S1 enriched with nitrifying bacteria microorganisms obtained in example 1
FIG. 3 is a graph showing the test results of the water treatment microfiller S1 enriched with anammox bacteria obtained in example 1
FIG. 4 is a graph showing the test results of the effect of the water treatment micro-filler S2 obtained in example 2 on the standard reaching rate of TN
FIG. 5 is a graph showing the test results of the effect of the water-treated microfiller S3 obtained in example 3 on TN removal rate
FIG. 6 is a graph showing the results of the test for the influence of the water-treated microfiller S3 on TN removal of load obtained in example 3
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
The embodiment provides a water treatment micro filler and a preparation method thereof.
Mixing powdered activated carbon (15-40 μm particle size, about 1.04g/m bulk density)3The pore volume was about 0.80mL/g, the number of pores was about 1280/g, and the total micropore surface area was about 800m2/g。)、 Fe3O4Mixing solid (particle diameter of 0.1-5.0 μm) and hydroxylamine hydrochloride solid (particle diameter of 0.01-0.5 μm), and adding Fe3O4The hydroxylamine hydrochloride solid was adsorbed on the powdered activated carbon by the surface energy to obtain water-treated microfiller S1. Wherein the powder is active carbon and Fe3O4And the mass ratio of the hydroxylamine hydrochloride solid is 1: 0.01: 0.1. s1 use concentration is 5 ~ 25mg/L, and the earlier stage concentration is high in the use, and later stage concentration is low, can adjust according to actual conditions.
Example 2
The embodiment provides a water treatment micro filler and a preparation method thereof.
Graphene oxide (particle size of 15-50 μm, bulk density of about 0.89 g/m)3The pore volume was about 0.775mL/g, the number of pores was about 900/g, and the total pore surface area was about 700m2/g。)、 Fe2O3Mixing solid (particle size of 0.1-5.0 μm) and hydrazine sulfate solid (particle size of 0.01-0.5 μm), and adding Fe2O3The solid and the hydrazine sulfate solid are adsorbed on the graphene oxide under the action of surface energy to obtain the water treatment micro-filler S2, as shown in FIG. 1. Graphene oxide, Fe2O3The mass ratio of the solid to the hydrazine sulfate solid is 1: 0.02: 0.08. s2 with the use concentration of 5-15 mg/L and the use processThe concentration in the middle and early stages is high, and the concentration in the later stage is low, and can be adjusted according to actual conditions.
Example 3
The embodiment provides a water treatment micro filler and a preparation method thereof.
Mixing diatomaceous earth (15-50 μm particle size, and bulk density of about 0.75 g/m)3Pore volume of about 0.88cm3A number of pores of about 1354/g, a total micropore surface area of about 780m2/g。)、FeCl3Mixing solid (particle diameter of 0.1-5.0 μm) and hydrazine sulfate solid (particle diameter of 0.01-0.5 μm), and FeCl3The solid, hydrazine sulfate solid, was adsorbed on the diatomaceous earth by the surface energy to obtain water-treated microfiller S3. Diatomaceous earth and FeCl3The mass ratio of the solid to the hydrazine sulfate is 1: 0.01: 0.1. the use concentration of the S3 filler is 5-25 mg/L, the early-stage concentration is high in the use process, the later-stage concentration is low, and the use concentration can be adjusted according to actual conditions.
Test example 1
The water treatment microfiller S1 obtained in example 1 was subjected to a denitrification microorganism enrichment test, and after the denitrification microorganism enrichment test was performed, ammonia nitrogen oxidizing bacteria and anaerobic ammonia oxidizing bacteria in the biological tank were significantly improved, and the results are shown in fig. 2 and 3. The inoculated sludge is obtained from A in Beijing2In the/O process (seed sludge), S1 filler is added in a test group, no filler is added in a control group, but the operation mode is the same as that of the test group, and three floc sludge are subjected to high-throughput sequencing after 100 days of operation. The result shows that after the S1 filler is added, the relative abundance of Ammonia Oxidizing Bacteria (AOB) is improved by 64.33%; the relative abundance of nitrite-oxidizing bacteria (NOB) is reduced by 49.91%; the relative abundance of the anammox bacteria is improved to 0.12 percent, which is 3.6 times that of the control group.
Test example 2
The water treatment microfiller S2 obtained in example 2 is subjected to denitrification performance optimization test, and after the test, the standard reaching rate of TN is obviously improved, and the result is shown in FIG. 4. The test group was filled with S2 filler and the control group was filled with no filler, but operated in the same manner as the test group. Under the condition of no exogenous addition, after the running for 150 days, the frequency of the effluent TN of the test group reaching the B level of the water pollutant discharge standard (DB 118902012) of the urban sewage treatment plant in Beijing is 91.85 percent, and the frequency of the effluent TN reaching the A level is 77.37 percent; the number of days to reach the standard is 2.37 times and 3.04 times of that of the control group respectively.
Test example 3
The water treatment microfiller S3 obtained in example 3 was subjected to denitrification load optimization test, and the results are shown in fig. 5 and 6. The test group was filled with S3 filler and the control group was filled with no filler, but operated in the same manner as the test group. Under the condition of no external source addition, the TN removal rate and the denitrification load of a test group are continuously increased to 94 percent and 0.081kg N/(m) in 170 days of operation3D), and the TN removal rate and the maximum denitrification load of the control group were 81.96% and 0.054kg N/(m)3.d)。
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A water treatment microfiller, comprising:
porous micro-filler, metal-based nano-chemical material and nitrogen chemical agent.
2. The water treatment micro-filler of claim 1, wherein,
the mass ratio of the porous micro-filler, the metal-based nano-chemical material and the nitrogen chemical agent is 1: 0.0001-0.1: 0.001-1.0.
3. The water treatment micro-filler of claim 1, wherein,
the porous micro filler is selected from at least one of tourmaline powder, chitosan, coral powder, diatomite, powdered activated carbon, kaolin, silicon carbide and graphene oxide.
4. The water treatment micro-filler of claim 1, wherein,
the bulk density of the porous micro filler is 0.35 to 1.1g/m3The pore volume is 0.35-1.0mL/g, the number of pores is 500-1300/g, and the surface area of all micropores is 50-1000 m2Per g, the equivalent particle diameter is 15-100 μm.
5. The water treatment micro-filler of claim 1, wherein,
the metal-based nano-chemical material is selected from at least one of an iron-based compound, a copper-based compound and a cobalt-based compound.
6. The water treatment micro-filler of claim 5, wherein,
the iron-based compound is selected from Fe3O4、Fe2O3、FeCl3、FeSO4And a respective solution;
the copper compound is selected from CuCL2、CuSO4And a respective solution;
the cobalt compound is selected from CoCL2And a solution thereof.
7. The water treatment micro-filler of claim 1, wherein,
the nitrogen chemical agent is at least two selected from hydroxylamine, hydroxylamine compounds, hydrazine compounds, EDTA compounds and respective solutions.
8. The water treatment micro-filler of claim 1, wherein,
the metal-based nano-chemical material is a solid with the grain diameter of 0.01-10 mu m and/or a solution with the mass concentration of 5-40%;
the nitrogen chemical agent is solid with the grain diameter of 0.01-10 mu m and/or solution with the mass concentration of 10-60%.
9. The water-treatment microfiller of claim 1, wherein the mass ratio of the porous microfiller, the metal-based nano-chemical material, and the nitrogen-based chemical agent is 1: 0.005-0.05: 0.06-0.6.
10. The method of any one of claims 1-9 for preparing a water treatment microfiller, comprising:
the porous micro-filler, the metal-based nano-chemical material and the nitrogen chemical agent are uniformly mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111069740.7A CN113788528B (en) | 2021-09-13 | 2021-09-13 | Water treatment micro filler and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111069740.7A CN113788528B (en) | 2021-09-13 | 2021-09-13 | Water treatment micro filler and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113788528A true CN113788528A (en) | 2021-12-14 |
| CN113788528B CN113788528B (en) | 2023-03-28 |
Family
ID=78880096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111069740.7A Active CN113788528B (en) | 2021-09-13 | 2021-09-13 | Water treatment micro filler and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113788528B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149072A (en) * | 2021-12-28 | 2022-03-08 | 华夏碧水环保科技有限公司 | Preparation method of water treatment filler capable of loading microorganisms and filler system |
| CN114275877A (en) * | 2021-12-30 | 2022-04-05 | 青岛威羽山环保科技有限公司 | Novel soft filler and preparation process thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585133A (en) * | 2014-10-28 | 2016-05-18 | 中国石油化工股份有限公司 | Bio-denitrification method for high-salt-content wastewater discharged from catalyst production process |
| CN106554080A (en) * | 2015-09-30 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of short-cut nitrification and denitrification biomembrane denitrogenation reactor and rapid biofilm method |
| CN108117156A (en) * | 2016-11-29 | 2018-06-05 | 中国石油化工股份有限公司 | A kind of method of the fast quick-recovery even running of Full Autotrophic Ammonium Removal Process |
| CN110642338A (en) * | 2019-10-30 | 2020-01-03 | 深圳杜尔环境科技有限公司 | Sewage nitrogen and phosphorus removal filler and preparation method thereof |
| CN111097414A (en) * | 2019-12-11 | 2020-05-05 | 中国科学院生态环境研究中心 | Simple method for loading superfine nano zero-valent iron on porous material |
| CN112811584A (en) * | 2021-01-11 | 2021-05-18 | 齐鲁工业大学 | Method for promoting start of anaerobic ammonia oxidation system by using iron modified activated carbon |
| CN112875845A (en) * | 2021-01-26 | 2021-06-01 | 北京美大环洲工程技术有限责任公司 | Sewage treatment process combining anaerobic hydrolysis, short-cut nitrification, synchronous nitrification and denitrification and aerobic oxidation |
| CN112919627A (en) * | 2021-02-04 | 2021-06-08 | 广东工业大学 | Method for rapidly starting autotrophic ammonia oxidation by using iron-carbon material |
-
2021
- 2021-09-13 CN CN202111069740.7A patent/CN113788528B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585133A (en) * | 2014-10-28 | 2016-05-18 | 中国石油化工股份有限公司 | Bio-denitrification method for high-salt-content wastewater discharged from catalyst production process |
| CN106554080A (en) * | 2015-09-30 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of short-cut nitrification and denitrification biomembrane denitrogenation reactor and rapid biofilm method |
| CN108117156A (en) * | 2016-11-29 | 2018-06-05 | 中国石油化工股份有限公司 | A kind of method of the fast quick-recovery even running of Full Autotrophic Ammonium Removal Process |
| CN110642338A (en) * | 2019-10-30 | 2020-01-03 | 深圳杜尔环境科技有限公司 | Sewage nitrogen and phosphorus removal filler and preparation method thereof |
| CN111097414A (en) * | 2019-12-11 | 2020-05-05 | 中国科学院生态环境研究中心 | Simple method for loading superfine nano zero-valent iron on porous material |
| CN112811584A (en) * | 2021-01-11 | 2021-05-18 | 齐鲁工业大学 | Method for promoting start of anaerobic ammonia oxidation system by using iron modified activated carbon |
| CN112875845A (en) * | 2021-01-26 | 2021-06-01 | 北京美大环洲工程技术有限责任公司 | Sewage treatment process combining anaerobic hydrolysis, short-cut nitrification, synchronous nitrification and denitrification and aerobic oxidation |
| CN112919627A (en) * | 2021-02-04 | 2021-06-08 | 广东工业大学 | Method for rapidly starting autotrophic ammonia oxidation by using iron-carbon material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149072A (en) * | 2021-12-28 | 2022-03-08 | 华夏碧水环保科技有限公司 | Preparation method of water treatment filler capable of loading microorganisms and filler system |
| CN114149072B (en) * | 2021-12-28 | 2023-10-13 | 华夏碧水环保科技股份有限公司 | Preparation method of microorganism-loadable water treatment filler and filler system |
| CN114275877A (en) * | 2021-12-30 | 2022-04-05 | 青岛威羽山环保科技有限公司 | Novel soft filler and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113788528B (en) | 2023-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Song et al. | Zeolite powder based polyurethane sponges as biocarriers in moving bed biofilm reactor for improving nitrogen removal of municipal wastewater | |
| Abdelfattah et al. | High-strength wastewater treatment using microbial biofilm reactor: a critical review | |
| CN113788528B (en) | Water treatment micro filler and preparation method thereof | |
| Lee et al. | Wastewater treatment in a hybrid biological reactor using powdered minerals: effects of organic loading rates on COD removal and nitrification | |
| CN102557328B (en) | Coal gasification wastewater processing method | |
| Liu et al. | Double-layer substrate of shale ceramsite and active alumina tidal flow constructed wetland enhanced nitrogen removal from decentralized domestic sewage | |
| Jin et al. | Performance of a nitrifying airlift reactor using granular sludge | |
| CN109970182A (en) | A kind of composite filling for immobilized microorganism technique | |
| CN109650661B (en) | System and method for efficiently purifying domestic sewage | |
| CN103058460A (en) | A/O (anoxic/oxic) flow separation and magnetic flocculation integrated sewage treatment device and method | |
| CN110697895A (en) | Wastewater treatment method and device for simultaneously removing ammonia nitrogen, nitrate nitrogen and phosphate | |
| CN110803766B (en) | Synchronous nitrification and denitrification process combining nitrification functional type and denitrification functional type suspension carrier | |
| JP4915036B2 (en) | Denitrification method and denitrification apparatus | |
| AU2018263286A1 (en) | Water treatment method | |
| CN102259977A (en) | Denitrification method of wastewater containing ammonia nitrogen | |
| KR100277017B1 (en) | Media for wastewater treatment, manufacturing method thereof and wastewater treatment method using the media | |
| CN108503037B (en) | Preparation and application of novel biofilm carrier | |
| JP2004305816A (en) | Nitrification method and apparatus, and waste water treatment equipment | |
| CN105417901A (en) | Sewage treatment device and sewage treatment method | |
| CN115520961A (en) | Diatomite reinforcement-based high ammonia nitrogen wastewater nitrosation treatment method | |
| CN106745690A (en) | A kind of biological carrier sewage treatment device | |
| CN105621625B (en) | A kind of nitrite bacteria growth promoter and preparation method thereof | |
| Xu et al. | Attapulgite suspension filter material for biological aerated filter to remove CODMn and ammonia nitrogen in micropolluted drinking water source | |
| CN108101229B (en) | Method for enhancing starting performance of water source water biological membrane pretreatment process | |
| JPH07241584A (en) | Waste water treatment method and apparatus using composite activated sludge carrier |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |