CN111777175A - Suspended filler for providing slow-release carbon source - Google Patents
Suspended filler for providing slow-release carbon source Download PDFInfo
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- CN111777175A CN111777175A CN202010720860.8A CN202010720860A CN111777175A CN 111777175 A CN111777175 A CN 111777175A CN 202010720860 A CN202010720860 A CN 202010720860A CN 111777175 A CN111777175 A CN 111777175A
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- carbon source
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- porous hollow
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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
- C02F3/28—Anaerobic digestion processes
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
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- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
A suspended filler providing sustained release of a carbon source comprising: the carbon source is slowly released and arranged in the porous hollow ball; wherein the slow-release carbon source is a biodegradable polymer. Compared with the prior art, the invention overcomes the defects of easy abrasion and consumption, easy water loss, difficult uniform distribution in a reactor and the like when biodegradable polymer plastic particles are directly used as the slow-release carbon source in a sewage treatment facility by additionally arranging the slow-release carbon source in the porous hollow ball, can be directly put into an anoxic or anaerobic section of the existing treatment facility, improves the denitrification efficiency of a treatment system, does not need to additionally arrange a treatment facility or a treatment process, and has the advantages of simple manufacture, convenient use and low application cost.
Description
Technical Field
The invention relates to a sewage treatment technology, in particular to a suspended filler for providing a slow-release carbon source.
Background
Nitrogen is one of main limiting factors of water eutrophication, and is an index needing priority control in the sewage treatment and discharge and eutrophication water body restoration processes. Heterotrophic denitrification is the most economical and efficient denitrification technology at present, and heterotrophic denitrifying bacteria take carbon sources as electron donors and nitrate nitrogen as electron acceptors, and convert the nitrate nitrogen into N2 or N2O to remove nitrogen. However, in the case of sewage or natural water with low carbon-nitrogen ratio, such as domestic sewage in some regions, tail water from sewage treatment plants, lightly polluted river and lake water, and nitrate-polluted groundwater, denitrification is difficult due to insufficient carbon source.
In order to solve the problem of insufficient carbon source in the treated water, the traditional heterotrophic denitrification process generally directly adds liquid carbon source, but the problems of insufficient carbon source, incomplete denitrification, waste caused by excessive carbon source, secondary pollution and the like are easily caused along with the fluctuation of the concentration of nitrate in the treated water, the difficulty in controlling the adding amount becomes the greatest difficulty, and the process is very unfavorable in economic cost and operation management. Especially for rural domestic sewage treatment facilities, the traditional mode of adding the liquid carbon source is more difficult to implement due to small treatment scale, large water quality fluctuation and low cost.
Biodegradable polymers such as polylactic acid, polyhydroxybutyrate-valerate, polybutylene succinate, polycaprolactone, starch-based plastics, and the like have been favored as solid carbon sources for heterotrophic denitrification because they can stably provide carbon sources required for denitrification and can adaptively meet the requirements for denitrification. However, these biodegradable polymers are not used as a carbon source in a large amount in engineering applications, and besides some biodegradable polymers are difficult to popularize due to high price, it is also an important reason that the biodegradable polymers are difficult to be directly used in the traditional sewage treatment process.
The biodegradable polymer has weak wear resistance, has a density slightly higher than that of water in a sinking state, is difficult to be uniformly distributed in a treatment facility, is generally granular and is easy to run off along with water, so the biodegradable polymer cannot be directly added into the treatment facility, a new treatment unit needs to be added or the original process facility needs to be modified, and the application difficulty and the cost are greatly increased.
In order to solve the above problems, we have made a series of improvements.
Disclosure of Invention
The present invention aims to provide a suspended filler for providing sustained release of carbon source, which overcomes the above disadvantages and shortcomings of the prior art.
A suspended filler providing sustained release of a carbon source comprising: the carbon source is arranged in the porous hollow ball;
the sustained-release carbon source is a biodegradable polymer, the sustained-release carbon source is made of one or more of polylactic acid, polyhydroxybutyrate valerate, polybutylene succinate, polycaprolactone and starch-based plastics, the using amount of the sustained-release carbon source is 5% -50% v rho, v is the volume of the porous hollow sphere, rho is the density of the biodegradable polymer, and the range of rho is 0.9-1.2 g/m3。
Furthermore, the porous hollow ball is made of an organic high molecular polymer, the aperture of the porous hollow ball is 0.2-1 cm, and the diameter of the porous hollow ball is 3-20 cm.
Further, the structure of the slow-release carbon source is in a shape of a strip or a foam ball, the foam ball of the slow-release carbon source is prepared by foaming, the width of the slow-release carbon source in the shape of the strip is larger than or equal to the aperture of the porous hollow ball, and the size of the slow-release carbon source in the shape of the foam ball is larger than or equal to 2 times the aperture of the porous hollow ball.
The invention has the beneficial effects that:
compared with the prior art, the invention overcomes the defects of easy abrasion consumption, easy water loss, difficult uniform distribution in a reactor and the like when biodegradable polymer plastic particles are directly used as the slow-release carbon source for a sewage treatment facility by additionally arranging the slow-release carbon source in the porous hollow ball, can be directly put into an anoxic or anaerobic section of the existing treatment facility, improves the denitrification efficiency of a treatment system, does not need to additionally arrange a treatment facility or a treatment process, and has simple manufacture, convenient use and low application cost; compared with the traditional original biodegradable polymer plastic particles, the biological nitrogen removal agent can fix more microorganisms and effectively improve the nitrogen removal efficiency.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural diagram of the sustained-release carbon source of the present invention.
FIG. 3 is another schematic diagram of the slow-release carbon source according to the present invention.
Reference numerals:
a porous hollow sphere 100 and a slow release carbon source 200.
Detailed Description
The present invention will be further described with reference to the following examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Example 1
FIG. 1 is a schematic structural diagram of the present invention. FIG. 2 is a schematic structural diagram of the sustained-release carbon source of the present invention.
FIG. 3 is another schematic diagram of the slow-release carbon source according to the present invention.
As shown in fig. 1 and 2, the carbon source is slowly released: a ribbon was prepared from polyhydroxybutyrate valerate and had a width of 2cm, a length of 100cm and a weight of 15 g.
Porous hollow spheres: the polyethylene hollow sphere has the diameter of 10cm and the aperture of 0.5-1 cm.
The assembling method comprises the following steps: and placing the slow-release carbon source in the porous hollow sphere to prepare the suspension sphere filler sphere.
The suspended ball filler is used as a filter material of a denitrification filter, and the treatment scale of the filter is 10m3D, the inlet water is the tail water of a sewage treatment plant of the first-grade A standard, and the dosage of the suspension ball filler is 0.32m3The filling rate is 80 percent, the hydraulic retention time is 1 hour, and the removal rate of nitrate nitrogen reaches more than 90 percent.
Example 2
As shown in fig. 3, the carbon source was slowly released: the starch-based plastic is foamed into cylindrical foam with the particle size of 3-4cm and the weight of 3.5g each.
Porous hollow spheres: the polyethylene hollow sphere has the diameter of 10cm and the aperture of 0.2-0.5 cm.
The assembling method comprises the following steps: 3 pieces of starch-based plastic cylindrical foam are placed in the polyethylene hollow spheres to prepare the suspension sphere filler spheres.
The suspended ball filler is used as a filter material of a denitrification filter, and the treatment scale of the filter is 10m3D, the inlet water is the tail water of a sewage treatment plant of the first-grade A standard, and the dosage of the suspension ball filler is 0.32m3The filling rate is 80 percent, the hydraulic retention time is 1 hour, and the removal rate of nitrate nitrogen reaches more than 90 percent.
The principle of the invention is as follows: the porous hollow ball 100 is combined with the slow-release carbon source 200, so that the defects of easy abrasion and consumption, easy water loss, difficult uniform distribution in a reactor and the like when biodegradable polymer plastic particles are directly used as the slow-release carbon source 200 in a sewage treatment facility are overcome, the preparation is simple, the porous hollow ball can be directly put into an anoxic or anaerobic section of the existing treatment facility, the denitrification efficiency of a treatment system is improved, no treatment facility or treatment process needs to be additionally arranged, the use is convenient, and the application cost is low.
The biodegradable polymer is made into a silk ribbon shape or made into foam balls, cylindrical foams and cubic foams through a foaming process, compared with original biodegradable polymer plastic particles, the surface area is greatly improved, and the biodegradable polymer plastic particles are used as carriers, can fix more microorganisms, can effectively improve the denitrification efficiency, enhance the interception capability of the porous hollow spheres to the hollow spheres and avoid loss.
After the slow-release carbon source 200 is consumed, the porous hollow spheres 100 can be recycled and refilled with new slow-release carbon source 200 for reuse, so that the application cost is further reduced.
While the present invention has been described with reference to the specific embodiments, the present invention is not limited thereto, and various changes may be made without departing from the spirit of the present invention.
Claims (3)
1. A suspended filler providing sustained release of a carbon source, comprising: the carbon source slow-release device comprises a porous hollow ball (100) and a slow-release carbon source (200), wherein the slow-release carbon source (200) is arranged inside the porous hollow ball (100);
the slow-release carbon source (200) is a biodegradable polymer, the slow-release carbon source (200) is made of one or more of polylactic acid, polyhydroxybutyrate valerate, polybutylene succinate, polycaprolactone and starch-based plastics, the using amount of the slow-release carbon source (200) is (5% -50%) v rho, v is the volume of the porous hollow sphere, rho is the density of the biodegradable polymer, and the range of rho is 0.9-1.2 g/m3。
2. The suspended filler for providing slow release of carbon source as claimed in claim 1, wherein: the porous hollow ball (100) is made of an organic high polymer, the aperture of the porous hollow ball (100) is 0.2-1 cm, and the diameter of the porous hollow ball (100) is 3-20 cm.
3. The suspended filler for providing slow release of carbon source as claimed in claim 1, wherein: the structure of the slow-release carbon source (200) is in a strip shape or a foam ball shape, the foam ball shape of the slow-release carbon source (200) is prepared by foaming, the width of the slow-release carbon source (200) in the strip shape is more than or equal to the pore diameter of the porous hollow ball (100), and the size of the slow-release carbon source (200) in the foam ball shape is more than or equal to 2 times of the pore diameter of the porous hollow ball (100).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010720860.8A CN111777175A (en) | 2020-07-24 | 2020-07-24 | Suspended filler for providing slow-release carbon source |
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| CN202010720860.8A CN111777175A (en) | 2020-07-24 | 2020-07-24 | Suspended filler for providing slow-release carbon source |
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| CN111777175A true CN111777175A (en) | 2020-10-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790036A (en) * | 2022-05-05 | 2022-07-26 | 中创宏远（北京）环保科技有限公司 | Slow-release solid carbon source, application thereof and sewage treatment device |
| CN116621330A (en) * | 2023-07-10 | 2023-08-22 | 合肥学院 | Biological filler for slowly releasing carbon source and preparation method and application thereof |
| CN116750879A (en) * | 2023-07-06 | 2023-09-15 | 北京新源智慧水务科技有限公司 | Biodegradable MBBR (moving bed biofilm reactor) suspended filler as well as preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003051485A1 (en) * | 2001-12-13 | 2003-06-26 | Environmental Operating Solutions, Inc. | Process and apparatus for waste water treatment |
| CN105036322A (en) * | 2015-07-22 | 2015-11-11 | 中山环保产业股份有限公司 | Denitrification suspended carrier |
| CN208071420U (en) * | 2017-12-28 | 2018-11-09 | 北京科净源科技股份有限公司 | Slow-release compounded carbons speed point denitrogenation ball |
| CN110342753A (en) * | 2019-07-31 | 2019-10-18 | 天津大学 | A kind of suspension ball biofilm formation device with composite filling |
| CN210736461U (en) * | 2019-07-31 | 2020-06-12 | 天津大学 | Suspended ball film hanging device with combined filler |
-
2020
- 2020-07-24 CN CN202010720860.8A patent/CN111777175A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003051485A1 (en) * | 2001-12-13 | 2003-06-26 | Environmental Operating Solutions, Inc. | Process and apparatus for waste water treatment |
| CN105036322A (en) * | 2015-07-22 | 2015-11-11 | 中山环保产业股份有限公司 | Denitrification suspended carrier |
| CN208071420U (en) * | 2017-12-28 | 2018-11-09 | 北京科净源科技股份有限公司 | Slow-release compounded carbons speed point denitrogenation ball |
| CN110342753A (en) * | 2019-07-31 | 2019-10-18 | 天津大学 | A kind of suspension ball biofilm formation device with composite filling |
| CN210736461U (en) * | 2019-07-31 | 2020-06-12 | 天津大学 | Suspended ball film hanging device with combined filler |
Non-Patent Citations (1)
| Title |
|---|
| 胡纪萃等: "《废水厌氧生物处理理论与技术》", 31 May 2003, 中国建筑工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790036A (en) * | 2022-05-05 | 2022-07-26 | 中创宏远（北京）环保科技有限公司 | Slow-release solid carbon source, application thereof and sewage treatment device |
| CN114790036B (en) * | 2022-05-05 | 2023-12-26 | 中创宏远（北京）环保科技有限公司 | Sustained-release solid carbon source, application thereof and sewage treatment device |
| CN116750879A (en) * | 2023-07-06 | 2023-09-15 | 北京新源智慧水务科技有限公司 | Biodegradable MBBR (moving bed biofilm reactor) suspended filler as well as preparation method and application thereof |
| CN116621330A (en) * | 2023-07-10 | 2023-08-22 | 合肥学院 | Biological filler for slowly releasing carbon source and preparation method and application thereof |
| CN116621330B (en) * | 2023-07-10 | 2024-05-07 | 合肥学院 | Biological filler for slowly releasing carbon source and preparation method and application thereof |
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