CN106946353A - A kind of apparatus and method for improving drowned flow artificial wet land denitrification effect - Google Patents
A kind of apparatus and method for improving drowned flow artificial wet land denitrification effect Download PDFInfo
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- CN106946353A CN106946353A CN201710295622.5A CN201710295622A CN106946353A CN 106946353 A CN106946353 A CN 106946353A CN 201710295622 A CN201710295622 A CN 201710295622A CN 106946353 A CN106946353 A CN 106946353A
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- wet land
- artificial wet
- drowned flow
- flow artificial
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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
- C02F3/30—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
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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
- C02F3/34—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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to a kind of apparatus and method for improving drowned flow artificial wet land denitrification effect.2 cloth waterwalls are set on drowned flow artificial wet land water flow direction and preceding aerobic zone, anoxic zone and rear aerobic zone is divided into, the length ratio of three is 2 ~ 5:1~4:1 ~ 3, and anoxic zone accounts for the 10% ~ 50% of the total length of artificial swamp main body, the water outlet cloth waterwall of wherein preceding aerobic zone and anoxic zone is provided with multiple rows of water distributing pore, with anoxic zone top formed prevent air in geo-stationary from oxygen to anoxic zone lower transfer hydrostatic group, in addition, the delivery port of rear aerobic zone is on the pond body top of drowned flow artificial wet land main body.Reach raising denitrification efficiency, realize denitrification and be reduced to be discharged into the nitrogen of air, so as to be finally reached the purpose of nitrogen in water removal, then after aerobic zone is further discharged after purification.Obviously the present invention provides a kind of drowned flow artificial wet land structure of optimization, and its rational in infrastructure, convenient management, effluent quality are good and are widely used in the processing of artificial swamp sewage.
Description
Technical field
The invention belongs to water treatment field, more particularly to a kind of device for improving drowned flow artificial wet land denitrification effect and side
Method.
Background technology
Drowned flow artificial wet land is typically made up of pond body, filler and the water plant being planted on filler.Drowned flow artificial wet land
Middle sewage flows through from filler gap, and the microorganism of filler superficial growth removes the pollutant purification in sewage.Drowned flow artificial
Wetland, which has, invests low, and maintenance management is convenient, the advantages of capacity of resisting impact load is strong, in China's domestic sewage in rural areas purification by
Gradually it is promoted.The removal of nitrogen includes three steps in sewage：Organic nitrogen forms ammonia nitrogen by mineralization；Ammonia nitrogen passes through nitrification
Process is oxidized to nitrate nitrogen；Nitrate nitrogen is reduced to nitrogen by denitrification and is discharged into air, so as to be removed from water.But,
Nitrification needs to carry out under aerobic conditions in sewage, and denitrification needs to carry out under anaerobic environment.Traditional undercurrent is wet
The dissolved oxygen on ground comes from the dissolved oxygen carried into water, oxygen secretes oxygen etc. in the dissolving on wetland surface, root system of plant in air,
Thus, aerobic condition is substantially in current wetland.It is difficult in traditional drowned flow artificial wet land while providing aerobic and anoxic two
Environment is planted, causes drowned flow artificial wet land nitric efficiency not high.Therefore, barrier air in oxygen dissolved into wetland, plant roots
System secretes oxygen and can reduce dissolved oxygen concentration in wetland, forms anaerobic environment, improves denitrification effect, so as to improve total nitrogen removal
Rate is very important.
The content of the invention
It is an object of the invention to provide a kind of apparatus and method of raising drowned flow artificial wet land denitrification effect convenient to carry out,
To make up the deficiencies in the prior art.
The reasonable construction of apparatus of the present invention is to be based on nitrification in artificial swamp sewage to need to carry out under aerobic conditions,
And denitrification needs to carry out under anaerobic environment, it is therefore necessary to build comprehensively and possess or meet；It is also contemplated that beneficial to anti-
Nitrobacteria grows, and further improves denitrification efficiency, so as to reach efficient denitrification effect, therefore is specially provided with by 2 cloth
Waterwall and the preceding aerobic zone, anoxic zone and the rear aerobic zone that are divided into successively and its strict proportionate relationship, also water distribution ceiling wall are fixed
Multiple rows of water distributing pore.The present invention is after the dual setting in forward and backward aerobic zone, and anoxic zone therein is constructed, and is not planted in anoxic zone
Plant is planted, but it is made the minimum formation water seal domain of the water mobility on top in the structure, its function is to have blocked air substantially
In oxygen to lower transfer, bottom is formed real anoxic zone waters, and beneficial to denitrifying bacteria growth, improve anti-nitre
Change efficiency, so as to improve denitrification effect.The delivery port of rear aerobic zone afterwards is located at the top of pond body, reaches further removal
Organic pollution and progress nitrification.
Therefore, the device of present invention raising drowned flow artificial wet land denitrification effect is：In drowned flow artificial wet land water flow direction
Upper to set 2 cloth waterwalls and be divided into preceding aerobic zone, anoxic zone and rear aerobic zone, the length ratio of three is 2 ~ 5:1~4:1 ~ 3,
And anoxic zone accounts for the 10% ~ 50% of the total length of artificial swamp main body, wherein being set on the water outlet cloth waterwall of preceding aerobic zone and anoxic zone
Have multiple rows of water distributing pore, with anoxic zone top formed prevent air in geo-stationary from oxygen to anoxic zone lower transfer it is quiet
Water body, in addition, the delivery port of rear aerobic zone is on the pond body top of drowned flow artificial wet land main body.
In view of being grown beneficial to denitrifying bacteria, denitrification efficiency is improved, so that denitrification effect is improved, on above-mentioned cloth waterwall
The highest order of water distributing pore be limited at 1/2nd of cloth waterwall height.
The diameter dimension of water distributing pore on above-mentioned cloth waterwall is between 2-20 centimetres
Improving the method for drowned flow artificial wet land denitrification effect is：The ammonia nitrogen in drowned flow artificial wet land sewage is passed through first preceding aerobic
The nitrifying process in area is oxidized to nitrate nitrogen；Then the nitrate nitrogen is rolled into a ball into denitrifying bacteria formed below via anoxic zone hydrostatic to give birth to
The anoxic zone in long anoxic waters, reaches raising denitrification efficiency, realizes denitrification and is reduced to be discharged into the nitrogen of air,
So as to be finally reached the purpose of nitrogen in water removal, then the discharge after the further purification in aerobic zone after
The present invention has that rational in infrastructure, method is comprehensive, management service is convenient, and the clearance of total nitrogen reaches more than 80%, effluent quality
Good the advantages of, and it is widely used in the sewage disposal of drowned flow artificial wet land.
Brief description of the drawings
The drowned flow artificial wet land general structure schematic diagram of Fig. 1 present invention.
The water distribution wall construction schematic diagram of Fig. 2 present invention.
Wherein, the delivery port of aerobic zone 4 water distributing pore, 5 cloth waterwall 6 behind the 1 preceding anoxic zone 3 of aerobic zone 2
7 artificial swamp main bodys（Main body）.
Embodiment
The present invention sets 2 cloth waterwalls 5 on drowned flow artificial wet land water flow direction and aerobic zone 1 before being divided into, lacked
Oxygen area 2 and rear aerobic zone 3, the length ratio of three is 2 ~ 5:1~4:1 ~ 3, and anoxic zone 2 accounts for the total length of artificial swamp main body 7
10% ~ 50%, wherein the water outlet cloth waterwall 5 of preceding aerobic zone 1 and anoxic zone 2 is provided with multiple rows of water distributing pore 4, with the top of anoxic zone 2
Formed and prevent the oxygen in air to anoxic zone（2）The hydrostatic group of the geo-stationary of lower transfer, in addition, rear aerobic zone 3 goes out
The mouth of a river 6 is on the pond body top of drowned flow artificial wet land main body 7.Generally opening is at the 80-100% of pond body height.
The highest order of water distributing pore 4 on above-mentioned cloth waterwall 5 is limited to the height of cloth waterwall 5（I.e. in drowned flow artificial wet land main body 7
Highly）Pond body 1/2nd at.
The diameter dimension of water distributing pore 4 on above-mentioned cloth waterwall 5 generally preferably selects 10 centimetres between 2-20 centimetres.
The present invention improve drowned flow artificial wet land denitrification effect method be：First by the ammonia nitrogen in drowned flow artificial wet land sewage
Nitrate nitrogen is oxidized to by the nitrifying process of preceding aerobic zone；Then the nitrate nitrogen is rolled into a ball via anoxic zone hydrostatic formed below anti-
The anoxic zone in the anoxic waters of nitrobacteria growth, reaches raising denitrification efficiency, realizes denitrification and be reduced to be discharged into
The nitrogen of air, so as to be finally reached the purpose of nitrogen in water removal, then is discharged after after the further purification in aerobic zone.
Illustrate the embodiment of the present invention below by embodiment.
Embodiment 1
Drowned flow artificial wet land size length × width × height is 2000 × 800 × 1200mm, preceding aerobic zone:Anoxic zone:Aerobic zone is afterwards
5: 4:1, anoxic zone not planting plants, the water distributing pore on preceding aerobic zone, anoxic zone water outlet cloth waterwall is highly cloth waterwall height
30%.Stable effluent quality after running 30 days.When ammonia nitrogen concentration is 40mgL in water inlet-1, total nitrogen concentration is 50 mgL-1, water
The power residence time is 10 days, and ammonia nitrogen concentration drops to 1.2 mgL-1, clearance is 97%, and total nitrogen concentration drops to 5.3 mg
L-1 , clearance is 89.4%.
Embodiment 2
Drowned flow artificial wet land size length × width × height is 2000 × 800 × 1200mm, preceding aerobic zone:Anoxic zone:Aerobic zone is afterwards
5: 4:1, anoxic zone not planting plants, the water distributing pore on preceding aerobic zone, anoxic zone water outlet cloth waterwall is highly cloth waterwall height
50%.Stable effluent quality after running 60 days.When ammonia nitrogen concentration is 40 mgL in water inlet-1, total nitrogen concentration is 50 mgL-1,
Hydraulic detention time is 10 days, and ammonia nitrogen concentration drops to 1.1 mgL-1, clearance is 97.3%, and total nitrogen concentration drops to 3.3
mg·L-1, clearance is 93.4%.
Embodiment 3
Drowned flow artificial wet land size length × width × height is 1000 × 400 × 1200mm, preceding aerobic zone：Anoxic zone：Aerobic zone is afterwards
2：2：1, anoxic zone not planting plants, the water distributing pore on preceding aerobic zone, anoxic zone water outlet cloth waterwall is highly cloth waterwall height
50%.Stable effluent quality after running 40 days.When ammonia nitrogen concentration is 40 mgL in water inlet-1, total nitrogen concentration is 50 mgL-1,
Hydraulic detention time is 10 days, and ammonia nitrogen concentration drops to 4.2 mgL-1, clearance is 89.5%, and total nitrogen concentration drops to 4.8
mg·L-1, clearance is 90.4%.
Embodiment 4
Drowned flow artificial wet land size length × width × height is 10000 × 4000 × 1200mm, preceding aerobic zone：Anoxic zone：Aerobic zone afterwards
For 4：5：1, anoxic zone not planting plants, the water distributing pore on preceding aerobic zone, anoxic zone water outlet cloth waterwall highly for cloth waterwall highly
40%.Stable effluent quality after running 30 days.When ammonia nitrogen concentration is 40 mgL in water inlet-1, total nitrogen concentration is 50 mgL-1, hydraulic detention time drops to 4.8 mgL for 8 days ammonia nitrogen concentrations-1, clearance is 88%, and total nitrogen concentration drops to 5.4
mg·L-1, clearance is 89.2%.
Embodiment 5
Drowned flow artificial wet land size length × width × height is 10000 × 4000 × 1200mm, preceding aerobic zone：Anoxic zone：Aerobic zone afterwards
For 3：4：3, anoxic zone not planting plants, the water distributing pore on preceding aerobic zone, anoxic zone water outlet cloth waterwall highly for cloth waterwall highly
40%.Stable effluent quality after running 40 days.When ammonia nitrogen concentration is 50 mgL in water inlet-1, total nitrogen concentration is 60 mgL-1, hydraulic detention time drops to 3.4 mgL for 8 days ammonia nitrogen concentrations-1, clearance is 93.2%, and total nitrogen concentration drops to 4.4
mg·L-1, clearance is 92.7%.
The clearance of the present invention is all 90% or so, it should more than 80%, otherwise should be regarded as the artificial swamp construction and does not conform to
Lattice.
Claims (4)
1. a kind of device for improving drowned flow artificial wet land denitrification effect, it is characterized in that being set on drowned flow artificial wet land water flow direction
Put 2 cloth waterwalls（5）And it is divided into preceding aerobic zone（1）, anoxic zone（2）With rear aerobic zone（3）, the length ratio of three is 2 ~ 5:
1~4:1 ~ 3, and anoxic zone（2）Account for artificial swamp main body（7）Total length 10% ~ 50%, wherein preceding aerobic zone（1）And anoxic zone
（2）Water outlet cloth waterwall（5）It is provided with multiple rows of water distributing pore（4）, with anoxic zone（2）Top formed prevent air in oxygen to
Anoxic zone（2）The hydrostatic group of the geo-stationary of lower transfer, rear aerobic zone（3）Delivery port（6）It is in drowned flow artificial wet land master
Body（7）Pond body top.
2. the device according to claim 1 for improving drowned flow artificial wet land denitrification effect, it is characterized in that, above-mentioned cloth waterwall
（5）On water distributing pore（4）Highest order be limited to cloth waterwall（5）At 1/2nd of height.
3. the device according to claim 1 for improving drowned flow artificial wet land denitrification effect, it is characterized in that, above-mentioned cloth waterwall
（5）On water distributing pore（4）Diameter dimension between 2--20 centimetres.
4. improving the method for drowned flow artificial wet land denitrification effect is：It is preceding good that the ammonia nitrogen in drowned flow artificial wet land sewage is passed through first
Oxygen area（1）Nitrifying process be oxidized to nitrate nitrogen；Then by the nitrate nitrogen via anoxic zone（2）Hydrostatic group's anti-nitre formed below
Change the anoxic zone in the anoxic waters of bacterial growth（2）, raising denitrification efficiency is reached, denitrification is realized and is reduced to be discharged into
The nitrogen of air, so as to be finally reached the purpose of nitrogen in water removal, the last aerobic zone after again（3）Further discharged after purification,
Effluent quality is set to reach clearance all more than 80%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295622.5A CN106946353A (en) | 2017-04-28 | 2017-04-28 | A kind of apparatus and method for improving drowned flow artificial wet land denitrification effect |
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| CN201710295622.5A CN106946353A (en) | 2017-04-28 | 2017-04-28 | A kind of apparatus and method for improving drowned flow artificial wet land denitrification effect |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285488A (en) * | 2017-08-24 | 2017-10-24 | 环境保护部南京环境科学研究所 | A kind of device and application method that black-odor riverway is administered using intensive aeration artificial swamp coupling technique dystopy |
| CN111333187A (en) * | 2020-03-27 | 2020-06-26 | 中国科学院广州地球化学研究所 | Biological filter system for in-situ treatment of black and odorous water body |
| CN111825270A (en) * | 2019-04-19 | 2020-10-27 | 南京林业大学 | Subsurface flow type constructed wetland and microbial fuel cell combined system |
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| 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 |
| US8894849B1 (en) * | 2011-03-03 | 2014-11-25 | The United States Of America As Represented By The Secretary Of The Air Force | Upward flow constructed wetland for treatment of water contaminated with chlorinated aliphatics |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107285488A (en) * | 2017-08-24 | 2017-10-24 | 环境保护部南京环境科学研究所 | A kind of device and application method that black-odor riverway is administered using intensive aeration artificial swamp coupling technique dystopy |
| CN111825270A (en) * | 2019-04-19 | 2020-10-27 | 南京林业大学 | Subsurface flow type constructed wetland and microbial fuel cell combined system |
| CN111333187A (en) * | 2020-03-27 | 2020-06-26 | 中国科学院广州地球化学研究所 | Biological filter system for in-situ treatment of black and odorous water body |
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Application publication date: 20170714 |