CN112850881A - Stepped ecological water treatment method and system for thermal power plant sewage treatment tail end - Google Patents
Stepped ecological water treatment method and system for thermal power plant sewage treatment tail end Download PDFInfo
- Publication number
- CN112850881A CN112850881A CN202110240852.8A CN202110240852A CN112850881A CN 112850881 A CN112850881 A CN 112850881A CN 202110240852 A CN202110240852 A CN 202110240852A CN 112850881 A CN112850881 A CN 112850881A
- Authority
- CN
- China
- Prior art keywords
- stage
- artificial wetland
- water
- composite artificial
- wetland bed
- 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
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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
-
- 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
- C02F3/006—Regulation methods for biological treatment
-
- 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
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/002—Apparatus and plants for the biological treatment of water, waste water or sewage comprising an initial buffer container
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/18—PO4-P
Abstract
A stepped ecological water treatment method and system for the tail end of sewage treatment of a thermal power plant comprise a first-stage composite artificial wetland bed, a second-stage composite artificial wetland bed and a third-stage composite artificial wetland bed which are arranged in a stepped manner from top to bottom; the water quantity adjusting tank is arranged at the front end of the same horizontal plane of the first-stage composite artificial wetland bed, the water collecting tank is arranged between the second-stage composite artificial wetland bed and the third-stage composite artificial wetland bed, a packing layer is arranged in each composite artificial wetland bed, the perforated water distribution pipes are arranged at the tops of the composite artificial wetland beds, the perforated water collection pipes are arranged at the bottoms of the composite artificial wetland beds, the first-stage perforated water distribution pipes are communicated with the water quantity adjusting tank, the first-stage perforated water collection pipes are communicated with the second-stage perforated water distribution pipes, the second-stage perforated water collection pipes and the third-stage perforated water distribution pipes are communicated with the water collecting tank, and the third-. The method adopts a non-energy consumption reinforced reoxygenation technology, and improves the concentration of dissolved oxygen and the nitrogen and phosphorus removal efficiency; no need of additional power, stable treatment effect and high efficiency.
Description
Technical Field
The invention relates to the technical field of ecological purification and restoration of water discharged from the tail end of a water treatment facility of a thermal power plant, in particular to a stepped ecological water treatment method and a stepped ecological water treatment system for the tail end of sewage treatment of the thermal power plant, a method for ecological purification treatment of water discharged from the tail end of the water treatment facility of the thermal power plant and a stepped composite artificial wetland bed.
Background
The artificial wetland treatment technology is a sewage ecological treatment technology developed in the last 70 th century, and realizes efficient purification of sewage through multiple synergistic effects of wetland fillers, aquatic plants, microorganisms and the like, such as physics, chemistry, biology and the like, and through matrix filtration, adsorption, precipitation, ion exchange, plant absorption and microbial degradation. According to the difference of system engineering design and water body flow state, the artificial wetland sewage treatment system can be divided into 3 types of free surface flow artificial wetland, horizontal subsurface flow artificial wetland and vertical subsurface flow artificial wetland.
The surface flow constructed wetland is very similar to a natural wetland in internal structure, ecological structure and appearance, the water surface of the surface flow constructed wetland is above the wetland matrix, sewage with the water depth of 0.3-0.8 m generally slowly flows through the surface of the wetland from an inlet at a certain speed, part of the sewage is evaporated or permeates into the ground, and effluent flows out of an overflow weir. The surface flow constructed wetland has low hydraulic load generally, the occupied area is larger than that of an undercurrent type under the condition of achieving the same treatment effect, the surface flow constructed wetland is easily influenced by seasons such as icing in winter, breeding of mosquitoes and flies in summer, stink and the like, the oxygen transmission capability of roots is very limited, and the dirt removal capability is also limited. The horizontal subsurface flow artificial wetland water flow wetland flows through the wetland in a horizontal flow mode under the surface of the substrate layer, the water collecting device and the water level adjusting device are arranged at the outlet, and the medium is usually made of a material with good hydraulic conductivity to avoid blockage. Because the oxygen required by aerobic biochemical reaction in the horizontal subsurface flow constructed wetland is mainly from atmospheric reoxygenation and the quantity is insufficient, the denitrification efficiency is not high. The water flow direction and the root system layer of the vertical subsurface flow artificial wetland are vertical, the water outlet system is generally arranged at the bottom of the wetland, the transfer efficiency of oxygen to sewage and matrix can be improved, but the operation of the vertical subsurface flow artificial wetland generally adopts an intermittent water inlet mode.
At present, the prior artificial wetland technology has the following main defects:
compared with the traditional sewage treatment process, the artificial wetland treatment system has larger occupied area which is generally 2-3 times of that of the traditional treatment method, wherein the surface flow pattern has larger occupied area due to small hydraulic load. Therefore, its application is limited in areas with tight land.
The intercepted suspended matters are accumulated in the artificial wetland, and meanwhile, the seepage capability of the matrix layer is weakened due to the continuous growth of microorganisms in the bed body, so that the blockage is finally caused, the subsurface flow artificial wetland is changed into the surface flow artificial wetland, and the treatment capability is reduced; moreover, the organic matters can gradually move to the constructed wetland and the outlet, and finally the quality of the effluent water is influenced.
The constructed wetland system usually has the problem of insufficient oxygen supply, which directly causes that the removal rate of nitrogen, phosphorus, especially nitrogen in the system is not very high, and influences the treatment effect of the constructed wetland. Although some researches adopt artificial oxygen increasing measures such as artificial reinforced aeration and oxygen supply, the oxygen increasing mode has the advantages of high energy consumption, high cost, complex control and operation and reduction of the economic advantages of the artificial wetland bed.
The Chinese patent No. ZL200510057047.2, the patent name "stepped artificial landscape wetland sewage treatment ecosystem" discloses a stepped artificial landscape wetland sewage treatment system which can avoid loosening of plant roots and slag overflow caused by water flow impact, although a water collecting pipe and a water collecting well are adopted to avoid the water quality problem caused by water flow disturbance to a certain extent, the oxygen content of water flow at the lower layer of the water collecting well is obviously lower than that of the upper layer, and the problems of poor nitrogen and phosphorus treatment effect and unstable effect commonly existing in an artificial wetland bed cannot be well solved; and the wetland bed has too single matrix filler, is not optimized in pole matching and filling modes, and is very easy to block, thereby influencing the use effect and the service life of the artificial wetland bed.
Therefore, on the basis of the existing research, a stepped composite artificial wetland bed which is economical, has a stable treatment effect and is particularly suitable for ecologically treating the effluent at the tail end of a power plant water treatment facility built near the coastal area or the river is developed; aiming at the situation that the partial treated water of the thermal power plant can not realize zero emission and the concentration of nitrogen, phosphorus, inorganic salt and metal ions in the treated water at the tail end is still in a critical state or even exceeds the standard, the method can be applied to not only stabilize the treatment effect, but also greatly save the construction and operation cost, the treated water can be directly discharged into the natural water body, the harmonious symbiosis with the natural ecological environment is fully realized, and the method has obvious significance for expanding the application range of the artificial wetland bed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a stepped ecological water treatment method and a stepped ecological water treatment system for the tail end of sewage treatment of a thermal power plant, which are suitable for ecological restoration of the tail end effluent of a water treatment facility of the thermal power plant, improve the treatment capacity, reduce the land occupation, do not need additional power supply, and have stable treatment effect and high efficiency.
The invention is realized by adopting the following technical scheme:
a stepped ecological water treatment system for the tail end of sewage treatment of a thermal power plant comprises a first-stage composite artificial wetland bed, a second-stage composite artificial wetland bed and a third-stage composite artificial wetland bed which are arranged in a stepped manner from top to bottom;
the water quantity adjusting tank is arranged at the front end of the same horizontal plane of the first-stage composite artificial wetland bed, the water collecting tank is arranged between the second-stage composite artificial wetland bed and the third-stage composite artificial wetland bed, a packing layer is arranged in each composite artificial wetland bed, the perforated water distribution pipes are arranged at the tops of the composite artificial wetland beds, the perforated water collection pipes are arranged at the bottoms of the composite artificial wetland beds, the first-stage perforated water distribution pipes are communicated with the water quantity adjusting tank, the first-stage perforated water collection pipes are communicated with the second-stage perforated water distribution pipes, the second-stage perforated water collection pipes and the third-stage perforated water distribution pipes are communicated with the water collecting tank, and the third-.
The invention is further improved in that the lower edge of the outlet of the water quantity adjusting pool is 0.1m lower than the lower edge of the water inlet pipe.
The invention has the further improvement that the depths of the third-stage composite artificial wetland bed, the first-stage composite artificial wetland bed and the second-stage composite artificial wetland bed are sequentially increased.
The invention has the further improvement that the lower part of the first-stage composite artificial wetland bed is provided with a vent hole.
The invention has the further improvement that the first-stage composite artificial wetland bed is used for nitration, denitrification and dephosphorization, and the first-stage packing layer adopts silica or ceramsite large-particle-size packing.
The invention is further improved in that the second-stage packing layer of the second-stage composite artificial wetland bed adopts silica or ceramsite large-particle-size packing.
The invention is further improved in that the third-stage packing layer of the third-stage composite artificial wetland bed adopts silica or ceramsite packing.
The invention is further improved in that the water quantity adjusting pool is also provided with a water inlet pipe.
A stepped ecological water treatment method for a thermal power plant sewage treatment terminal is based on the stepped ecological water treatment system for the thermal power plant sewage treatment terminal, and comprises the following steps:
leading the water discharged from the tail end of the power plant water treatment facility to a water quantity regulating tank so as to ensure that the water inlet quantity at the front end of the ecological water treatment system is relatively balanced; the water discharged from the regulating tank passes through a three-stage ladder composite artificial wetland bed and is distributed in a water drop mode; the first-stage composite artificial wetland bed: a good aerobic environment is constructed in the bed body, the nitrification process of nitrifying bacteria is completed, and silica or ceramsite large-particle-size filler is adopted to improve the hydraulic conductivity of the system and the nitrification and dephosphorization treatment efficiency; the second-stage composite artificial wetland bed: a good anoxic environment is constructed in the bed body to complete the denitrification process of the denitrifying bacteria; the plant absorbs and utilizes the nitrogen and phosphorus to assimilate and remove part of the nitrogen and phosphorus, and then denitrification, denitrification and dephosphorization are carried out; the third-stage composite artificial wetland bed: oxygen-enriched nitrification denitrification and phosphorus removal treatment are carried out, and a good aerobic environment is constructed by strengthening natural reoxygenation and plant oxygen supply so as to ensure the stability of the final effluent quality.
Compared with the prior art, the invention has the following technical effects:
firstly, an energy-consumption-free reinforced reoxygenation technology is adopted, so that the dissolved oxygen concentration and the nitrogen and phosphorus removal efficiency are improved; no need of additional power, stable treatment effect and high efficiency.
Secondly, the grading and filling mode of the bed body filler are reasonably matched, so that the economic requirement of the filler is met, and the bed body treatment effect can be improved.
And thirdly, the cost is low, and the treatment effect is stable.
The structure and the water distribution system of the artificial wetland bed are optimized, and the artificial wetland bed has the characteristics of simple structure and small occupied area.
The invention can be used for ecological restoration of the tail end effluent of the water treatment facility of the power plant, and can also be applied to small-scale and low-concentration sewage treatment projects.
Drawings
FIG. 1 is a schematic plan view of the present invention;
fig. 2 is a sectional view of the present invention 1-1.
Description of reference numerals:
1-a water quantity regulating tank, 2-a first-stage composite artificial wetland bed, 3-a second-stage composite artificial wetland bed, 4-a water collecting tank, 5-a third-stage composite artificial wetland bed, 6-a first-stage perforated water distribution pipe, 7-a second-stage perforated water distribution pipe, 8-a third-stage perforated water distribution pipe, 9-a water inlet pipe, 10-a first-stage packing layer, 11-a second-stage packing layer, 12-a third-stage packing layer, 13-a first-stage perforated water collection pipe, 14-a second-stage perforated water collection pipe, 15-a third-stage perforated water collection pipe, 16-a water outlet pipe and 17-a ventilation hole.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
A stepped ecological water treatment method for the tail end of sewage treatment of a thermal power plant comprises the following steps: leading the water discharged from the tail end of the power plant water treatment facility to a water quantity regulating pool 1 so as to ensure that the water inlet quantity at the front end of the ecological water treatment system is relatively balanced; the water discharged from the regulating tank passes through a three-stage ladder composite artificial wetland bed and is distributed in a water drop mode; the first-stage composite artificial wetland bed 2: a good aerobic environment is constructed in the bed body, the nitrification process of nitrifying bacteria is completed, and silica or ceramsite large-particle-size filler is adopted to improve the hydraulic conductivity of the system and the nitrification and dephosphorization treatment efficiency; the second-stage composite artificial wetland bed 3: a good anoxic environment is constructed in the bed body to complete the denitrification process of the denitrifying bacteria; the plant absorbs and utilizes the nitrogen and phosphorus to assimilate and remove part of the nitrogen and phosphorus, and then denitrification, denitrification and dephosphorization are carried out; the third-stage composite artificial wetland bed 5: oxygen-enriched nitrification denitrification and phosphorus removal treatment are carried out, and a good aerobic environment is constructed by strengthening natural reoxygenation and plant oxygen supply so as to ensure the stability of the final effluent quality. As shown in fig. 1 and 2, the stepped composite artificial wetland bed for implementing the method of the invention comprises a water quantity adjusting tank connected between the outlet water at the tail end of the sewage treatment facility and the stepped wetland bed, and three adjacent stepped first-to third-stage composite artificial wetland beds 2, 3 and 5 which can be naturally arranged into steps; a water collecting tank 4 between the second-stage composite artificial wetland bed 3 and the third-stage composite artificial wetland bed 5; first-stage to third- stage packing layers 10, 11 and 12 are respectively arranged in each artificial wetland bed body, and plants are planted on the surfaces of the packing layers; a water outlet pipe 16 at the tail end of the sewage treatment facility enters the water quantity adjusting tank 1 from the upper end, and the lower edge of the outlet of the water quantity adjusting tank 1 is 0.1m lower than the lower edge of the water inlet pipe 9; the artificial wetland beds at all levels are respectively provided with first-level to third-level perforated water distribution pipes 6, 7 and 8 and first-level to third-level perforated water collection pipes 13, 14 and 15 so as to distribute and collect water in different modes. In order to ensure the stability of the treatment system, two groups of main treatment systems are adopted. Raw water enters from a water inlet pipe 9 and is sequentially distributed step by step through first-stage to third-stage perforated water distribution pipes 6, 7 and 8; under the combined action of the first-stage to third- stage packing layers 10, 11 and 12 arranged in the bed body and the planted plants, the finally obtained purified water is discharged out of the artificial wetland bed through a water outlet pipe 16. The depths of the third-stage composite artificial wetland bed 5, the first-stage composite artificial wetland bed 2 and the second-stage composite artificial wetland bed 3 are sequentially increased.
A first-stage perforated water distribution pipe 6 is arranged above the first-stage composite artificial wetland bed 2, and water is distributed in a water drop mode, so that the oxygen content of inlet water is ensured; organic matters and SS (suspended solids) are removed mainly by filtration and biodegradation, and plants with strong decontamination capability and developed root systems are adopted.
The primary composite artificial wetland bed 2 mainly has the main functions of nitrification, denitrification and dephosphorization, a good aerobic environment is constructed in the bed body, the nitrifying bacteria can complete nitrification, the phosphorus is removed mainly in the primary packing layer 10, the hydraulic characteristic is improved by adopting large-particle-size packing such as silica or ceramsite, the problem of easy blockage of the packing is solved, the phosphorus is removed by filtration through chemical precipitation, and the packing is reasonably matched and arranged. The lower part of the first-stage composite artificial wetland bed 2 is provided with an air hole 17 to enhance the contact of the filler and oxygen and strengthen the nitrification and denitrification effect and the deamination and dephosphorization effects of the artificial wetland bed. The bottom of the first-stage composite artificial wetland bed 2 is provided with a first-stage perforated water collecting pipe 13, and a second-stage perforated water distributing pipe 7 communicated with the second-stage composite artificial wetland bed 3 drops water to enter the second-stage composite artificial wetland bed 3.
The second-stage composite artificial wetland bed 3 adopts silica or ceramsite and other large-particle-size fillers, so that the depth of the pool is increased, the occupied area is reduced, and the main functions of the second-stage composite artificial wetland bed are denitrification, deamination and dephosphorization. A good anoxic environment is constructed in the bed body, so that denitrifying bacteria complete denitrification: the plant absorbs and utilizes to assimilate and remove part of nitrogen and phosphorus; the combined configuration of the second-stage packing layer 11 is optimized, and novel light packing (such as ceramsite and the like) is selected and filtered to remove phosphorus through chemical precipitation. The effluent of the second-stage composite artificial wetland bed 3 enters the collecting tank 4 through the second-stage perforated collecting pipe 14, emphasizes the natural reoxygenation of the sewage, and enters the third-stage composite artificial wetland bed 5 through the third-stage perforated water distributing pipe 8 in a drop mode.
The third-stage composite artificial wetland bed 5 adopts drop water distribution, adopts a shallow water aerobic artificial wetland bed with short retention time, and constructs a good aerobic environment through natural reoxygenation and plant oxygen supply so as to ensure the stability of final effluent. The third-stage composite artificial wetland bed 5 mainly has the function of further strengthening the nitrogen and phosphorus removal by reoxygenation and nitrification. Ensuring the sufficient dissolved oxygen content of the sewage in the bed body, and further completing denitrification through nitrobacteria; the phosphorus is removed mainly in the third-stage packing layer 12, and silica or ceramsite packing and the like are utilized to remove the phosphorus by filtration through chemical precipitation; the effluent of the third-stage composite artificial wetland bed 5 is communicated with a water outlet pipe 16 through a third-stage perforated water collecting pipe 15 and is discharged through the water outlet pipe 16.
Claims (9)
1. A stepped ecological water treatment system for the tail end of sewage treatment of a thermal power plant is characterized by comprising a first-stage composite artificial wetland bed (2), a second-stage composite artificial wetland bed (3) and a third-stage composite artificial wetland bed (5) which are arranged from top to bottom in a stepped manner;
the water quantity adjusting pool (1) is arranged at the front end of the same horizontal plane of the first-stage composite artificial wetland bed (2), the water collecting pool (4) is arranged between the second-stage composite artificial wetland bed (3) and the third-stage composite artificial wetland bed (5), a packing layer is arranged in each composite artificial wetland bed, perforated water distribution pipes are arranged at the top of each composite artificial wetland bed, perforated water collection pipes are arranged at the bottom of each composite artificial wetland bed, the first-stage perforated water distribution pipes (6) are communicated with the water quantity adjusting pool (1), the first-stage perforated water collection pipes (13) are communicated with the second-stage perforated water distribution pipes (7), the second-stage perforated water collection pipes (14) and the third-stage perforated water distribution pipes (8) are communicated with the water collecting pool (4), and the third-stage perforated water collection pipes (15) are communicated with.
2. The stepped ecological water treatment system for a thermal power plant sewage treatment terminal according to claim 1, characterized in that the lower edge of the outlet of the water amount regulation tank (1) is 0.1m lower than the lower edge of the water inlet pipe (9).
3. The stepped ecological water treatment system for a sewage treatment terminal of a thermal power plant according to claim 1, wherein the depths of the third-stage composite artificial wetland bed (5), the first-stage composite artificial wetland bed (2) and the second-stage composite artificial wetland bed (3) are sequentially increased.
4. The stepped ecological water treatment system for the sewage treatment terminal of a thermal power plant according to claim 1, characterized in that a vent hole (17) is formed at the lower part of the first-stage composite artificial wetland bed (2).
5. The stepped ecological water treatment system for the tail end of sewage treatment of a thermal power plant as claimed in claim 1, characterized in that the first-stage composite artificial wetland bed (2) is used for nitrification, denitrification and dephosphorization, and the first-stage packing layer (10) adopts silica or ceramsite large-particle-size packing.
6. The stepped ecological water treatment system for the sewage treatment terminal of the thermal power plant as claimed in claim 1, wherein the second-stage packing layer (11) of the second-stage composite artificial wetland bed (3) adopts silica or ceramsite large-particle-size packing.
7. The stepped ecological water treatment system for the sewage treatment terminal of the thermal power plant according to the claim (1), characterized in that the third packing layer (12) of the third composite artificial wetland bed (5) is filled with silica or ceramsite.
8. The stepped ecological water treatment system for a thermal power plant sewage treatment terminal according to claim 1, characterized in that the water quantity adjusting tank (1) is further provided with a water inlet pipe (9).
9. A stepped ecological water treatment method for a thermal power plant sewage treatment terminal, which is based on the stepped ecological water treatment system for a thermal power plant sewage treatment terminal of any one of claims 1 to 8, comprising the steps of:
leading the water discharged from the tail end of the power plant water treatment facility to a water quantity regulating pool (1) so as to ensure that the water inlet quantity at the front end of the ecological water treatment system is relatively balanced; the water discharged from the regulating tank passes through a three-stage ladder composite artificial wetland bed and is distributed in a water drop mode; the first-stage composite artificial wetland bed (2): a good aerobic environment is constructed in the bed body, the nitrification process of nitrifying bacteria is completed, and silica or ceramsite large-particle-size filler is adopted to improve the hydraulic conductivity of the system and the nitrification and dephosphorization treatment efficiency; the second-stage composite artificial wetland bed (3): a good anoxic environment is constructed in the bed body to complete the denitrification process of the denitrifying bacteria; the plant absorbs and utilizes the nitrogen and phosphorus to assimilate and remove part of the nitrogen and phosphorus, and then denitrification, denitrification and dephosphorization are carried out; a third-stage composite artificial wetland bed (5): oxygen-enriched nitrification denitrification and phosphorus removal treatment are carried out, and a good aerobic environment is constructed by strengthening natural reoxygenation and plant oxygen supply so as to ensure the stability of the final effluent quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240852.8A CN112850881A (en) | 2021-03-04 | 2021-03-04 | Stepped ecological water treatment method and system for thermal power plant sewage treatment tail end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240852.8A CN112850881A (en) | 2021-03-04 | 2021-03-04 | Stepped ecological water treatment method and system for thermal power plant sewage treatment tail end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112850881A true CN112850881A (en) | 2021-05-28 |
Family
ID=75991758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110240852.8A Pending CN112850881A (en) | 2021-03-04 | 2021-03-04 | Stepped ecological water treatment method and system for thermal power plant sewage treatment tail end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112850881A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114560565A (en) * | 2022-03-01 | 2022-05-31 | 桂林理工大学 | Carbon neutralization constructed wetland sewage purification system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172712A (en) * | 2007-10-23 | 2008-05-07 | 重庆大学 | Process method for stairway composite ecological bed clarified sewage and ecological bed thereof |
| CN204400787U (en) * | 2015-01-26 | 2015-06-17 | 绿地环保科技股份有限公司 | Stepwise artificial landscape wetland sewage treatment ecological system |
| CN206783408U (en) * | 2017-06-06 | 2017-12-22 | 徐州工程学院 | Compound type constructed wetland system for high-ammonia-nitrogen sewage processing |
| CN108217959A (en) * | 2018-01-24 | 2018-06-29 | 桑德生态科技有限公司 | For the intensified denitrification and dephosphorization artificial wet land system of low carbon-nitrogen ratio sewage processing |
| CN109704468A (en) * | 2019-02-26 | 2019-05-03 | 深水海纳水务集团股份有限公司 | A kind of stepwise artificial wetland |
-
2021
- 2021-03-04 CN CN202110240852.8A patent/CN112850881A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172712A (en) * | 2007-10-23 | 2008-05-07 | 重庆大学 | Process method for stairway composite ecological bed clarified sewage and ecological bed thereof |
| CN204400787U (en) * | 2015-01-26 | 2015-06-17 | 绿地环保科技股份有限公司 | Stepwise artificial landscape wetland sewage treatment ecological system |
| CN206783408U (en) * | 2017-06-06 | 2017-12-22 | 徐州工程学院 | Compound type constructed wetland system for high-ammonia-nitrogen sewage processing |
| CN108217959A (en) * | 2018-01-24 | 2018-06-29 | 桑德生态科技有限公司 | For the intensified denitrification and dephosphorization artificial wet land system of low carbon-nitrogen ratio sewage processing |
| CN109704468A (en) * | 2019-02-26 | 2019-05-03 | 深水海纳水务集团股份有限公司 | A kind of stepwise artificial wetland |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114560565A (en) * | 2022-03-01 | 2022-05-31 | 桂林理工大学 | Carbon neutralization constructed wetland sewage purification system |
| CN114560565B (en) * | 2022-03-01 | 2023-04-21 | 桂林理工大学 | Constructed wetland sewage purification system in carbon neutralization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107935307B (en) | River water purification system for enhancing biological decomposition through cyclic reoxygenation and implementation method | |
| CN105645677A (en) | Horizontal flow/vertical flow integrated artificial wetland and operation method thereof | |
| CN103172226B (en) | Surface water stagnation type baffling wetland system for synchronously and intensively removing nitrogen, phosphorus and estrogen | |
| CN110386666B (en) | Surface flow wetland-composite pond system for sewage treatment | |
| CN105776556A (en) | Anti-clogging economic crop type filter bed-baffle subsurface flow constructed wetland enhanced nitrogen and phosphorus removal system | |
| CN113912250B (en) | Biological ecological remediation system for rural sewage | |
| US20230130843A1 (en) | Deepwater cabin-based constructed wetland treatment system | |
| CN110668575A (en) | Full-automatic efficient nitrogen and phosphorus removal tidal flow constructed wetland and use method thereof | |
| CN113264641A (en) | Multistage ecological wetland high-efficiency purification system | |
| CN115196751A (en) | Tail water upgrading treatment system and method for coupling ecological oxidation regulating pond, multi-configuration constructed wetland and landscape ecological pond | |
| CN109020099A (en) | A kind of printing and dyeing wastewater processing equipment and processing method | |
| CN112850881A (en) | Stepped ecological water treatment method and system for thermal power plant sewage treatment tail end | |
| CN206447733U (en) | A kind of oil-containing sewage treatment system | |
| CN112047486A (en) | Composite functional wetland combination process for treating drainage basin characteristic pollutants | |
| CN110127959B (en) | Artificial wetland water purification method | |
| CN209759238U (en) | System for adopt combination technology to purify lake water | |
| CN113935199B (en) | Rural water environment ecological chain type restoration system | |
| CN107381779B (en) | Sewage biological electrical stimulation treatment and tail gas synergistic wetland purification system | |
| CN110407327A (en) | A kind of micro- method for exposing high efficient vertical flow constructed wetland and submerged plant ecological pond combined system and its handling tail water | |
| CN206337080U (en) | Novel ecological pool hybrid system | |
| CN112624345B (en) | Artificial wetland sewage treatment method | |
| CN109422349A (en) | A method of utilizing submerged plant and microbial treatment earth's surface contaminant water | |
| CN109592791B (en) | Composite artificial wetland system and operation method thereof | |
| CN211871749U (en) | Solar ecological floating island | |
| CN111675433A (en) | Ecological strengthening treatment method for landfill leachate in northwest loess area |
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 |