CN108996668A - A kind of high-efficiency sustained-release carbon source modified corn core, preparation method and application - Google Patents
A kind of high-efficiency sustained-release carbon source modified corn core, preparation method and application Download PDFInfo
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- CN108996668A CN108996668A CN201810674764.7A CN201810674764A CN108996668A CN 108996668 A CN108996668 A CN 108996668A CN 201810674764 A CN201810674764 A CN 201810674764A CN 108996668 A CN108996668 A CN 108996668A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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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
- 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
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention belongs to sewage treatment fields, disclose a kind of high-efficiency sustained-release carbon source modified corn core, preparation method and application, the corncob that slow release carbon source is 8~10 parts by parts by weight is made through 80~90 parts of alkaline hydrogen peroxide modification, and preparation method is simple and fast, at low cost, high treating effect.Prepared high-efficiency sustained-release carbon source modified corn cored structure is loose, surface area increases and has porosity, and partial size is 8~12 millimeters, and density is 0.3~0.6g/cm3, applied in denitrification bio-filter, the removal rate of nitrate nitrogen is up to 90% or more.
Description
Technical field
The invention belongs to sewage treatment packing technique field, it is stable especially to relate to a kind of economical and efficient, carbon source rate of release
Slow release carbon source-modified corn core, preparation method and application.
Background technique
Municipal sewage plant effluent requires low C/N ratio, and the deep denitrogenation process of use often needs additional carbon, biological denitrification
Additional carbon in technique includes liquid carbon source and solid slow-release carbon source.The problem of liquid carbon source is for example at high cost, secondary pollution compared with
To be serious, the carrier that solid slow-release carbon source can simultaneously as the electron donor of biological denitrification and biofilm development is common
Solid slow-release carbon source includes native cellulose substance and artificial synthesized degradable polymer, and wherein degradable polymer is because of valence
Lattice are higher to be limited it and is widely used, and native cellulose substance, such as rice husk and corncob, directly as solid slow-release carbon
Source, which uses, has good denitrification effect, cheap easy acquisition, but it is unstable to there is rate of release in the application, is also easy to produce two
The problem of secondary pollution.Therefore secondary development is carried out to native cellulose substance, the modification slow release carbon source for studying efficient stable has
Significance.
Studying more solid cellulose mainly has: stalk, straw, shell substance, corncob etc..Wherein corncob is one
Kind of safety, economic carbon source material, dissolved organic matter is more, and have it is stronger continue for carbon ability, using corncob as dirty
Water process denitrifying carbon source and biofilm carrier can effectively remove nitrate, be a kind of feasibility carbon source, but its carbon emissions rate
It is unstable but to limit it and be widely used.In order to improve sustained release stabilised efficiency, the prior art mainly adopts high molecular materials to be
Skeleton bundled slow-releasing carbon source improves sustained release stability, such as CN201610671863.0, viscose rayon both conducts which uses
Slow release carbon source filler skeleton, and as carbon source slow-release material, it overcomes other carbon source Controlled-release fillers and relies on skeleton package carbon source material
Material, has that part carbon source material is completely covered and can not be utilized by microorganism by skeleton.But viscose rayon production is numerous
It is trivial, preparation cost is high, and the secondary damage of microorganism is easily caused after a period of use, so being not suitable for large area use.
Slow-release carbon source material in CN201110423562.3 is using the starch carbon source raw material of good biocompatibility, nutrient and more
Ingredients Inorganic knot raw material compound prescription uses kernel and shell is two-layer release-controlled, uniform ball-type granulating technique, the multicomponent without
Machine knot material includes in ordinary portland cement, composite Portland cement, flyash, attapulgite, montmorillonite or kaolin
One or two kinds of mixing plasticity bonding raw materials and diatomite, flyash, active carbon or 50~125 mesh fine quartz sands in
The high osmosis raw material that one or more mix.Although these inside and outside nuclear structures ensure that sustained release stability, still
After the completion of slow release carbon source consumption, inorganic knot material is deposited on the bottom in the long-term use, increases the cleaning of biological tank
Burden.
Summary of the invention
Goal of the invention: it is an object of the invention to the problems unstable for natural solid slow release carbon source rate of release, lead to
Modification and the optimization to modified condition are crossed, a kind of economical and efficient stable sustained-release carbon source material is prepared, is improved at sewage
Denitrification denitrogenation efficiency in reason.
Technical solution: to achieve the above object, the present invention adopts the following technical scheme that
A kind of preparation method of high-efficiency sustained-release carbon source modified corn core, the slow release carbon source are 8~10 parts by parts by weight
Corncob is made through 80~90 parts of alkaline hydrogen peroxide modification.
Preferably, the alkaline hydrogen peroxide is the sodium hydroxide solution containing 0.5%~2% hydrogen peroxide, the hydrogen-oxygen
The concentration for changing sodium solution is not higher than 3%.
Preferably, the modified-reaction condition of the corncob and alkaline hydrogen peroxide is the water bath with thermostatic control at 90~100 DEG C
Pot water-bath 2~4 hours.
Preferably, corncob and alkaline hydrogen peroxide reaction system are cooled to room temperature, washed after the completion of the modified-reaction
Only, it is centrifuged 3~10 minutes after neutralization in 1000~2000 revs/min of low speed centrifuges, low temperature drying to constant weight is to get sustained release carbon
Source.
Preferably, used corncob is the natural air drying particle of 10-15mm, corncob is agricultural wastes.
High-efficiency sustained-release carbon source modified corn core provided by the invention is loosely organized cellular structure, and surface area increases,
It is prepared by preparation method above-mentioned.
Preferably, the high-efficiency sustained-release carbon source modified corn core particles diameter is 8~12mm, density is 0.3~0.6g/cm3。
High-efficiency sustained-release carbon source modified corn core of the present invention, which operates in, purifies sewage in denitrification bio-filter, operating procedure
Are as follows:
1) high-efficiency sustained-release carbon source modified corn core is packed into denitrification bio-filter, the packing ratio with other filtrates is 1:
1~2, wherein other filtrates are common natural filtering material, zeolite, active carbon etc.；
2) Starting mode is inoculation membrane formation method, and waste water is introduced denitrification bio-filter after starting；Service condition is temperature
18~35 DEG C, pH value is 6.8~8.0, and dissolved oxygen is less than 0.5mg/L, and denitrifying volumetric loading is 0.3~6.5kg/ (m2·
D), hydraulic detention time is 20~60min.
The utility model has the advantages that high-efficiency sustained-release carbon source modified corn core provided by the invention is compared with existing slow release carbon source, have with
Lower advantage:
(1) cost is relatively low for the corncob selected by the present invention, and it is useless to advantageously account for agricultural in farm waste for raw material sources
The problem of gurry, reduces the wasting of resources.
(2) modified material manufacturing process safety and environmental protection of the present invention, will not the adverse effect caused by human body and environment.Alkalinity
The modified corn core fibre skeleton that hydrogen peroxide modification obtains is retained, but the combination between fiber and fiber becomes pine
It dissipates, most of lignin and portion of cellulose are removed, and the lattice structure between cellulose is destroyed, and lattice disturbance makes
It obtains cellulose to be easier to contact with enzyme, enhances the affinity to enzyme, improve the content of the crystallization water, promote the decomposition of cellulose,
And corncob mass loss is low, formation is porous, is conducive to attached growth of microorganisms, is not necessarily to additional skeleton, and carbon source can be able to
Long stable effect release.
(3) modified slow release carbon source reacts the state that can quickly tend to be steady in the reactor, and can be protected with the long period
It holds, the present invention is applied to denitrification bio-filter, and the removal rate of nitrate nitrogen is up to 90% or more, and nitrate removal rate is significantly larger than
Directly using natural slow release carbon sources such as corncobs, and the cleaning burden that not will cause biofilter is used for a long time.
Detailed description of the invention
Fig. 1 is unmodified corncob institutional framework scanning electron microscope (SEM) photograph；
Fig. 2 is the corncob institutional framework scanning electron microscope (SEM) photograph of modified processing in embodiment 1；
Fig. 3 is modified corn core high-efficiency sustained-release carbon source in embodiment 4 to nitrate removal rate time changing curve figure；
Fig. 4 is that COD time changing curve figure is discharged in embodiment 5.
Specific embodiment
The present invention is further described combined with specific embodiments below, and the description of specific embodiment is substantially only model
Example, following embodiment are based on technical solution of the present invention and are implemented.It should be noted that those skilled in the art are based on skill of the present invention
Art design is modified and equivalent replacement, all falls within the scope of the present invention.
Embodiment 1
Corncob, is pulverized and sieved the sample for filtering out that required grain size specification is 12mm or so by step 1 in pulverizer,
The clean natural conditions that are placed in air-dry, for use；
Step 2 takes 8 parts of corncob and 90 parts of mixed solutions containing 1v/v% hydrogen peroxide and 3w/v% sodium hydroxide,
And in 95~100 DEG C of thermostat water bath water-bath 4 hours；
Reaction solution in step 2 is cooled to room temperature by step 3, is cleaned, in 1800 revs/min of low-speed centrifugals after neutralization
Machine is centrifuged 3 minutes, and low temperature drying to constant weight is to get slow release carbon source.The untreated preceding corn it can be seen from Fig. 1 and Fig. 2 comparison
Cored structure cellulosic structure is fine and close, and cellulose, hemicellulose and lignin are crosslinked together, this high-crosslinking-degree make cellulose and
The exposure level of cellulase substantially reduces；The basic skeleton structure of modified treated corncob high-efficiency sustained-release carbon source is also
, but crosslinking degree reduces between fiber, loosely organized and porous, porosity improves and aperture increases, most of lignin
It is removed with portion of cellulose, the lattice structure between cellulose is destroyed, and crystal water content improves, and the density of slow release carbon source is
0.45~0.56g/cm3。
Embodiment 2
Step 1, corncob is pulverized and sieved in pulverizer filter out required grain size specification be 9~10mm sample, wash
Only it is placed in natural conditions to air-dry, for use；
Step 2 takes 10 parts of corncob and 80 parts of mixing containing 1v/v% hydrogen peroxide and 2w/v% sodium hydroxide molten
Liquid, and in 90 DEG C of thermostat water bath water-bath 2 hours；
Reaction solution in step 2 is cooled to room temperature by step 3, is cleaned, in 1500 revs/min of low-speed centrifugals after neutralization
Machine is centrifuged 5 minutes, low temperature drying to constant weight to get slow release carbon source, prepared high-efficiency sustained-release carbon source modified corn core fibre it
Between crosslinking degree reduce, it is loosely organized and porous, porosity improve and aperture increases, most of lignin and portion of cellulose quilt
It removes, the lattice structure between cellulose is destroyed, and crystal water content improves, and the density of slow release carbon source is 0.5~0.55g/
cm3。
Embodiment 3
Step 1, corncob is pulverized and sieved in pulverizer filter out required grain size specification be 12~15mm sample,
The clean natural conditions that are placed in air-dry, for use；
Step 2 takes 9 parts of corncob and 85 parts of mixing containing 2v/v% hydrogen peroxide and 1.5w/v% sodium hydroxide molten
Liquid, and in 98~100 DEG C of thermostat water bath water-bath 2.5 hours；
Reaction solution in step 2 is cooled to room temperature by step 3, is cleaned, in 1200 revs/min of low-speed centrifugals after neutralization
Machine is centrifuged 10 minutes, low temperature drying to constant weight to get slow release carbon source, prepared high-efficiency sustained-release carbon source modified corn core fibre it
Between crosslinking degree reduce, it is loosely organized and porous, porosity improve and aperture increases, most of lignin and portion of cellulose quilt
It removes, the lattice structure between cellulose is destroyed, and crystal water content improves, and the density of slow release carbon source is 0.36~0.42g/
cm3。
Embodiment 4
The high-efficiency sustained-release carbon source modified corn core for weighing the preparation of 20g embodiment 1 carries out static state in 1.5L closed reactor
Denitrification test, 150mL seed sludge come from certain local sewage treatment plant, and experimental water is potassium nitrate configuration, concentration 40mg/
L, dosage 800mL.At 22 DEG C, pH is controlled 7.5 or so for temperature of reactor control, is changed water and is measured within every 2 days.Such as Fig. 3
Shown, the removal rate fast and stable of reactor nitrate nitrogen just reaches 80% or more in first day, rapidly increase to later 90% with
On, until the 4th day stabilization that brings into operation, run the nitrate removal rate for still having 90% or more after 30d.
Embodiment 5
High-efficiency sustained-release carbon source modified corn core in embodiment 1 is applied in denitrification bio-filter, the present embodiment institute
The denitrification bio-filter lab scale equipment used, is designed as cylindrical body, dischargeable capacity 10L, and sewage is beaten from bottom through peristaltic pump
Enter, the total depth of cracking closure of filtrate and slow release carbon source in bottom is 60cm, loads slow release carbon source and filtrate, water outlet by different proportion
Upper, by keeping water intake velocity to control the residence time of water, start to intake after carrying out biofilm to filtrate and slow release carbon source, control
Various Denitrification Conditions realize denitrification process.It should be noted that other filtrates can be selected from common natural filtering material, zeolite, work
Property charcoal etc..
Carrying out practically step are as follows:
(1) modified corn core slow release carbon source is packed into denitrification bio-filter, the packing ratio with zeolite is 40%；
(2) inoculation membrane formation method carries out start-up, and waste water is introduced denitrification bio-filter after starting；Running temperature 20~
22 DEG C, pH value is 7.0~7.2, and dissolved oxygen is less than 0.5mg/L, and denitrifying volumetric loading is 0.8kg/ (m2D), waterpower is stopped
Staying the time is 45min, 3d can stable operation, after stable operation, up to 90% or more, water outlet COD is less than nitrate removal effect
30mg/L, as shown in Figure 4.
Embodiment 6
High-efficiency sustained-release carbon source modified corn core prepared by embodiment 2 is applied in denitrification bio-filter, experiment condition
Substantially with embodiment 5, the difference is that improving hydraulic detention time to 60min, after 3d stable operation, nitrate removal effect
Up to 95% or more, water outlet COD is less than 25mg/L.
Embodiment 7
High-efficiency sustained-release carbon source modified corn core prepared by embodiment 3 is applied in denitrification bio-filter, experiment condition
Substantially with embodiment 5, the difference is that change filtrate into active carbon, packing ratio 50%, after stable operation, nitrate removal
For effect up to 92% or more, water outlet COD is less than 30mg/L.
Control experiment
The non-modified corncob for weighing phase homogenous quantities is applied in denitrification bio-filter, and experiment condition is the same as embodiment 5, fortune
After row 30d, nitrate removal not sufficiently effective 60%, water outlet COD is higher than 30mg/L.
Natural plant cellulose compact structure, cellulose, hemicellulose and lignin are crosslinked together, make cellulose and fibre
The exposure level for tieing up plain enzyme substantially reduces.The main component of corncob is cellulose, hemicellulose and lignin, and it is wooden to destroy its
Plain protective layer and the lattice structure for changing cellulose may advantageously facilitate the enzymatic hydrolysis of cellulose, improve the rate of release of cellulose, lead to
The control to modified condition is crossed, realizes that modified corn core slow release carbon source achievees the effect that efficient stable.
Claims (8)
1. a kind of preparation method of high-efficiency sustained-release carbon source modified corn core, which is characterized in that the slow release carbon source is 8 by parts by weight
~10 parts of corncob is made through 80~90 parts of alkaline hydrogen peroxide modification.
2. the preparation method of high-efficiency sustained-release carbon source modified corn core according to claim 1, which is characterized in that the alkalinity
Hydrogen peroxide is the mixed solution of hydrogen peroxide and sodium hydroxide, and wherein the volume fraction of hydrogen peroxide is 0.5%~2%, sodium hydroxide
The mass-volume concentration of solution is not higher than 3%.
3. the preparation method of high-efficiency sustained-release carbon source modified corn core according to claim 1 or 2, which is characterized in that described
The modified-reaction condition of corncob and alkaline hydrogen peroxide is thermostat water bath water-bath 2~4 hours of 90~100 DEG C.
4. the preparation method of high-efficiency sustained-release carbon source modified corn core according to claim 3, which is characterized in that the modification
After the reaction was completed, corncob and alkaline hydrogen peroxide reaction system are cooled to room temperature, neutralize, clean after 1000~2000 turns/
Minute low speed centrifuge is centrifuged 3~10 minutes, and low temperature drying to constant weight is to get slow release carbon source.
5. the preparation method of high-efficiency sustained-release carbon source modified corn core according to claim 1, which is characterized in that used
Corncob is the natural air drying particle of 10-15mm.
6. a kind of high-efficiency sustained-release carbon source modified corn core, which is characterized in that the high-efficiency sustained-release carbon source modified corn core is structure
Loose cellular structure is prepared by the described in any item preparation methods of claim 1-5.
7. high-efficiency sustained-release carbon source modified corn core according to claim 6, which is characterized in that the high-efficiency sustained-release carbon source changes
Property corncob partial size be 8~12mm, density be 0.3~0.6g/cm3。
8. application of the above-mentioned high-efficiency sustained-release carbon source modified corn core in denitrification bio-filter, which is characterized in that high-efficiency sustained-release
Carbon source modified corn core, which operates in, purifies sewage in denitrification bio-filter, operating procedure are as follows:
1) high-efficiency sustained-release carbon source modified corn core is packed into denitrification bio-filter, with the packing ratios of other filtrates be 1:1~
2, other filtrates are selected from the one or more of natural filtering material, zeolite or active carbon；
2) Starting mode is inoculation membrane formation method, and waste water is introduced denitrification bio-filter after starting；Service condition be temperature 18~
35 DEG C, pH value is 6.8~8.0, and dissolved oxygen is less than 0.5mg/L, and denitrifying volumetric loading is 0.3~6.5kg/ (m2D), water
The power residence time is 20~60min.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540306A (en) * | 2019-09-02 | 2019-12-06 | 安徽舜禹水务股份有限公司 | Preparation method of straw corncob sewage denitrification carbon source |
| CN111333203A (en) * | 2020-03-25 | 2020-06-26 | 北京城市排水集团有限责任公司 | Ecological slow-release carbon source and preparation method and application thereof |
| CN111517477A (en) * | 2020-05-14 | 2020-08-11 | 江西省科学院 | Sulfate reducing bacteria embedded particles for treating ionic rare earth mine wastewater, and preparation method and application thereof |
| CN112678961A (en) * | 2020-12-31 | 2021-04-20 | 江南大学 | Method for combined denitrification of kitchen waste fermentation liquid and solid slow-release combined carbon source |
| CN114315293A (en) * | 2022-01-07 | 2022-04-12 | 中车唐山机车车辆有限公司 | Nitrogen and phosphorus removal baking-free ceramsite and preparation method and application thereof |
| CN114426330A (en) * | 2020-10-29 | 2022-05-03 | 中国环境科学研究院 | Method for preparing steady-state enhanced denitrification slow-release carbon source filler by water-methanol-alkali system |
| CN114772712A (en) * | 2022-03-09 | 2022-07-22 | 沈阳建筑大学 | Preparation method of modified corncob used as SBBR process filler |
| CN115321681A (en) * | 2020-09-21 | 2022-11-11 | 青岛大学 | Enhanced ecological floating bed technology for nitrogen and phosphorus removal of tail water of sewage treatment plant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365305A (en) * | 2016-10-31 | 2017-02-01 | 郑州大学环境技术咨询工程公司 | Preparing method and application of ecological matrix particles for river water body enhanced nitrogen removal |
| CN107724333A (en) * | 2017-11-28 | 2018-02-23 | 郑州大学 | A kind of anti-blocking ecology filter dam of river enhancing denitrification effect |
| CN108046519A (en) * | 2017-12-12 | 2018-05-18 | 杭州达康环境工程有限公司 | The denitrogenation dephosphorizing that a kind of river sewage is administered combines technique up to standard |
-
2018
- 2018-06-27 CN CN201810674764.7A patent/CN108996668A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365305A (en) * | 2016-10-31 | 2017-02-01 | 郑州大学环境技术咨询工程公司 | Preparing method and application of ecological matrix particles for river water body enhanced nitrogen removal |
| CN107724333A (en) * | 2017-11-28 | 2018-02-23 | 郑州大学 | A kind of anti-blocking ecology filter dam of river enhancing denitrification effect |
| CN108046519A (en) * | 2017-12-12 | 2018-05-18 | 杭州达康环境工程有限公司 | The denitrogenation dephosphorizing that a kind of river sewage is administered combines technique up to standard |
Non-Patent Citations (2)
| Title |
|---|
| 赵文莉: "预处理方法对玉米芯作为反硝化固体碳源的影响", 《环境科学》 * |
| 郑志: "不同预处理对玉米芯酶解特性和形态结构的影响研究", 《可再生能源》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540306A (en) * | 2019-09-02 | 2019-12-06 | 安徽舜禹水务股份有限公司 | Preparation method of straw corncob sewage denitrification carbon source |
| CN110540306B (en) * | 2019-09-02 | 2021-11-09 | 安徽舜禹水务股份有限公司 | Preparation method of straw corncob sewage denitrification carbon source |
| CN111333203A (en) * | 2020-03-25 | 2020-06-26 | 北京城市排水集团有限责任公司 | Ecological slow-release carbon source and preparation method and application thereof |
| CN111517477A (en) * | 2020-05-14 | 2020-08-11 | 江西省科学院 | Sulfate reducing bacteria embedded particles for treating ionic rare earth mine wastewater, and preparation method and application thereof |
| CN111517477B (en) * | 2020-05-14 | 2021-01-22 | 江西省科学院 | Sulfate reducing bacteria embedded particles for treating ionic rare earth mine wastewater, and preparation method and application thereof |
| CN115321681A (en) * | 2020-09-21 | 2022-11-11 | 青岛大学 | Enhanced ecological floating bed technology for nitrogen and phosphorus removal of tail water of sewage treatment plant |
| CN114426330A (en) * | 2020-10-29 | 2022-05-03 | 中国环境科学研究院 | Method for preparing steady-state enhanced denitrification slow-release carbon source filler by water-methanol-alkali system |
| CN112678961A (en) * | 2020-12-31 | 2021-04-20 | 江南大学 | Method for combined denitrification of kitchen waste fermentation liquid and solid slow-release combined carbon source |
| CN112678961B (en) * | 2020-12-31 | 2022-04-29 | 江南大学 | Method for combined denitrification of kitchen waste fermentation liquid and solid slow-release combined carbon source |
| CN114315293A (en) * | 2022-01-07 | 2022-04-12 | 中车唐山机车车辆有限公司 | Nitrogen and phosphorus removal baking-free ceramsite and preparation method and application thereof |
| CN114315293B (en) * | 2022-01-07 | 2023-03-14 | 中车唐山机车车辆有限公司 | Nitrogen and phosphorus removal baking-free ceramsite and preparation method and application thereof |
| CN114772712A (en) * | 2022-03-09 | 2022-07-22 | 沈阳建筑大学 | Preparation method of modified corncob used as SBBR process filler |
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Application publication date: 20181214 |