CN108975599A - Reed wetland sewage purification system and effluent purification method - Google Patents
Reed wetland sewage purification system and effluent purification method Download PDFInfo
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- CN108975599A CN108975599A CN201810660693.5A CN201810660693A CN108975599A CN 108975599 A CN108975599 A CN 108975599A CN 201810660693 A CN201810660693 A CN 201810660693A CN 108975599 A CN108975599 A CN 108975599A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
Abstract
The present invention relates to a kind of reed wetland sewage purification systems, including the first wetland pond, grille well, conditioning tank, anaerobic pond, anoxic pond, aerobic tank, sedimentation basin, the second wetland pond, the third wetland pond being sequentially connected；First wetland pond, grille well, conditioning tank are arranged from high to low；Anaerobic pond, anoxic pond, aerobic tank, sedimentation basin are arranged from high to low；Second wetland pond and third wetland pond are arranged from high to low.Setting mixes return pipe between the end of aerobic tank and the front end of anoxic pond, and the first water quality detection well is arranged between the water outlet in the second wetland pond and the water inlet in third wetland pond, and the second water quality detection well is arranged in the water outlet end in third wetland pond.Purification system of the invention reduces utilization and the site operation personnel of mechanical equipment, increases the design of reflux, improve Nitrogen/Phosphorus Removal using stepped design.
Description
Technical field
The invention belongs to technical field of sewage purification, and in particular to a kind of reed wetland sewage purification system and sewage purification
Method.
Background technique
In recent ten years, some region water qualities of China coast run down, and red tide ecocatas-trophe takes place frequently, and are littoral zone
Economic development and living standards of the people bring great threat.To find out its cause, town domestic sewage, industrial wastewater and farmland-use water etc.
The a large amount of polluters carried are the important pollution sources for leading to water eutrophication and water quality deterioration.Nitrogen, phosphorus especially in waste water
Content is exceeded, can grow in spring, summer stimulation alga eruption formula, so as to cause serious wawter bloom problem, harm has caused
The common concern of the coastal people.Government department and researcher are also being to control water eutrophication problem and pay many
Effort.
Wetland and forest, ocean are listed as global three big ecosystem-types, it is the uniqueness that reciprocity between lake and land is formed
The ecosystem has high bio-diversity and biological productivity, while having extremely strong self-purification capacity and purifying sewage
Ability, therefore it is referred to as " kidney of the earth "." kidney of the earth " how is utilized to purify town domestic sewage, industrial wastewater and farmland
With the polluter in water to serve the hot issue that society has become current exploitation wetland service function.
In recent years, reed wetland starts to be attempted for carrying out sewage treatment, because it is with cheap, environmentally protective etc. excellent
Point, and the defects of conventional sewage plants are costly, energy consumption is high, operational management is complicated is avoided, it is increasingly becoming one
The efficient biological prosthetic approach of kind, is more and more paid attention to by scientific research personnel and government department.Reed wetland sewage treatment skill
Art is using in the multi-turns layer ecosystems such as land vegetation, edaphon, water body planktonic organism in artificial or natural wetland
The multiple process such as physics, chemistry, biology synergistic effect, in sewage impurity and harmful element handle, the mechanism of action
It is each comprising delay, filtering, absorption, redox, precipitating, microorganism decomposition, Degradation and Transformation, plant absorption, residue accumulated etc.
Class biological chemistry action is an extremely complex process.And the technology itself is also required to mutually tie with other sewage disposal technologies
Close the better effect of competence exertion.Therefore, reed wetland sewage disposal technology is often comprehensive, polynary systemic technology,
It needs to use different design methods according to the source of sewage, specific nature and pollution situation.
Investigation discovery, existing wetland sewage disposal technology have the following problems: (1) excessively adopting in wet land treating system
With mechanical equipment, covert in this way increases energy consumption, also increases cost.For example previous design often uses many sewage
Pump, sewage is converted between different units, and the operation of sewage pump needs personnel or automatic system, while also consumption electricity
Power, this undoubtedly increases operation cost.(2) lack and scientifically monitored for the effect shortage after sewage treatment, often lacked
The node that water quality is detected in treatment process, therefore how sewerage processing system effect is not very bright actually
Really.(3) lack the refluxing unit for being directed to denitrogenation dephosphorizing.In sewage treatment, " anaerobic pond-anoxic pond-aerobic tank " (A/A/O)
Critical process when system is denitrogenation dephosphorizing, however many designs lack the design to flow back for aerobic tank trickle,
The efficiency for limiting " anaerobic pond-anoxic pond-aerobic tank " technique plays.(4) denitrogenation dephosphorizing and wastewater treatment efficiency be not very
Ideal, and maintenance cost is higher, needs personnel for a long time in field of line operation.
Summary of the invention
For existing marsh sewage treatment system operation cost, high, denitrogenation dephosphorizing and wastewater treatment efficiency are undesirable
The above problem, the present invention provide a kind of reed wetland sewage purification system, have structure is simple, it is small to save the energy, occupied area,
High-efficient, applied widely, long service life, safe and reliable advantage；It is dirty the present invention also provides being purified using reed wetland
The method of water reduces utilization and the site operation personnel of mechanical equipment, increases the design of reflux, mention using stepped design
High Nitrogen/Phosphorus Removal.
The present invention is achieved by the following technical solutions:
A kind of reed wetland sewage purification system, including be sequentially connected the first wetland pond, grille well, conditioning tank, anaerobism
Pond, anoxic pond, aerobic tank, sedimentation basin, the second wetland pond, third wetland pond；
First wetland pond setting water inlet and water outlet, water outlet are connected with the water inlet of grille well, grille well
The bottom that grille well is arranged in water outlet is connected with conditioning tank, and conditioning tank is connected by water pipe with the front end of anaerobic pond, on water pipe
First sewage pump is set；The water outlet of anaerobic pond is connected with the water inlet of anoxic pond, the water outlet of anoxic pond and entering for aerobic tank
The mouth of a river is connected, and setting mixes return pipe between the end of aerobic tank and the front end of anoxic pond, and it is dirty to mix setting second on return pipe
Water pump；The water outlet of aerobic tank is connected with sedimentation basin, and sedimentation basin is connected by water pipe with the water inlet in the second wetland pond, on water pipe
Third sewage pump is set；The water outlet in the second wetland pond is connected with the water inlet in third wetland pond, and is arranged between the two
One water quality detection well, water quality detection well is interior to be arranged detector；The second water quality detection well is arranged in the water outlet end in third wetland pond, the
Two water quality detection wells connect outlet pipe, and valve is arranged on outlet pipe；
It is respectively provided with bio-matrix in first wetland pond, the second wetland pond and third wetland pond, is grown on bio-matrix
Reed, water inlet and water outlet are separately positioned on above and below bio-matrix；
First wetland pond, grille well, conditioning tank are arranged from high to low；Anaerobic pond, anoxic pond, aerobic tank, sedimentation basin are from height
To low arrangement；Second wetland pond and third wetland pond are arranged from high to low.
A method of sewage is purified using reed wetland, comprising the following steps:
(1) sewage is introduced into the first wetland pond, plants reed in the first wetland pond, underfill bio-matrix material,
Sewage is flowed through from reed root, matrix surface layer, then automatically flows into grille well；
(2) it is disposed with grid in grille well, by suspended substance biggish in water body or particle entrapment, sewage is from grating base
Outlet pipe automatically flows into conditioning tank；
(3) conditioning tank is connected with the first sewage pump, and sewage tune stream is lifted into anaerobic pond by the first sewage pump；
(4) in anaerobic pond, it is organic that the macromolecule organic difficult to degrade in sewage is changed into the low molecule being easily degraded
Object；
(5) from the bottom of anaerobic pond automatically into anoxic pond, denitrification occurs sewage in anoxic pond for sewage；
(6) for sewage from the bottom of anoxic pond automatically into aerobic tank, the organic matter in sewage is further divided into nothing
Machine object；The sewage of aerobic tank end is back to the front end of anoxic pond by the second sewage pump；
(7) sewage carries out preliminary sedimentation automatically into sedimentation basin from aerobic tank, some mineralized materials or can not carry out biochemistry
The sludge or particulate matter of reaction are deposited；
(8) oettIed sewage is promoted in the second wetland pond by third sewage pump, by reed and bio-matrix
Double filtration and biochemical reaction, excessive nitrogen in sewage, phosphorus, silicon and heavy metal polluter be removed；
The sewage flowed out automatically in (9) second wetland ponds, by the first water quality detection well, water quality testing meter real-time online into
Row sampling of water quality and detection；Subsequent sewage again passes by filtering and biochemical treatment automatically into third wetland pond, last automatic
The second water quality detection well is flowed into, is flowed out after water quality testing meter detection is qualified.
Further, the content of the dissolved oxygen in the anaerobic pond controls in 0.2mg/L the dissolved oxygen hereinafter, in anoxic pond
Content control the content of dissolved oxygen in 0.4mg/L-0.6mg/L, aerobic tank and control in 2mg/L-5mg/L.
Reed wetland sewage purification system provided by the invention and the method for handling sewage have the advantages that
(1) all essential elements, are all made of stepped design, push water flow using natural gravity, reduce mechanical equipment
Utilization, reduce site operation personnel, play effect that is energy-saving, cutting operating costs.
(2) before previous grille well, increase reed wetland pond, effectively slow down water velocity, while utilizing reed itself
Filtration and mechanical stop effect, biggish sewage impurity is blocked in outside grille well, the pressure of grille well is reduced.
(3) it is flowed back and is designed using the mixed liquor of " aerobic tank end → anoxic pond front end ", better denitrogenation dephosphorizing can be reached
Effect.
(4) between two wetland ponds and wetland pond handles sewage rear end, water quality detection well has been increased separately, using automatic
Effect after water quality testing meter on-line checking sewage treatment, it is ensured that sewage treatment result meets discharge standard.
The present invention makes full use of the multi-turns layer such as reed vegetation, edaphon, water body planktonic organism in artificial/natural wetland
The multiple process such as physics, chemistry, biology in ecosystem synergistic effect, at the impurity and harmful element in sewage
Reason；Have many advantages, such as that structure is simple, ingenious small, high-efficient, applied widely using the gravity saving energy, occupied area, it is real
It is long with the service life, there is safe and reliable performance and effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of 1 reed wetland sewage purification system of embodiment.
In figure: 1, the first wetland pond；2, grille well；3, conditioning tank；4, anaerobic pond；5, anoxic pond；6, aerobic tank；7, it precipitates
Pond；8, the second wetland pond；9, third wetland pond；10, the first sewage pump；11, return pipe is mixed；12, the second sewage pump；13,
Three sewage pumps；14, the first water quality detection well；15, the second water quality detection well；16, outlet pipe；17, valve；18, bio-matrix；
19, reed.
Specific embodiment
Combined with specific embodiments below and attached drawing is described in further details the present invention.
Embodiment 1
The present embodiment provides a kind of reed wetland sewage purification systems, as described in Figure 1, including the first wetland being sequentially connected
Pond 1, grille well 2, conditioning tank 3, anaerobic pond 4, anoxic pond 5, aerobic tank 6, sedimentation basin 7, the second wetland pond 8, third wetland pond 9,
Arrow in figure indicates water (flow) direction.
First wetland pond, grille well, conditioning tank are arranged from high to low；Anaerobic pond, anoxic pond, aerobic tank, sedimentation basin are from height
To low arrangement；Second wetland pond and third wetland pond are also to arrange from high to low.Stepped design is used, so that each unit has
Certain height fall can use gravity in this way to promote water flow automatic flowing, to reduce the frequency of use of sewage pump.
Water inlet and water outlet is arranged in first wetland pond 1, and bio-matrix 18 is arranged in bottom, and bio-matrix 18 can meet reed
Basic growth, but nitrogen and phosphorus content does not enrich, and reed 19 is grown on bio-matrix, and the upper of bio-matrix 18 is arranged in water inlet
The lower section of bio-matrix 18 is arranged in side, water outlet, and water outlet is connected with the water inlet of grille well 2.It is arranged before grille well 2
Reed wetland pond 1, can effectively slow down water velocity, while be acted on using the filtration of reed itself and mechanical stop, will be compared with
Big sewage impurity, such as foam plastic material bag, biggish suspended matter etc., are blocked in outside grille well, to mitigate the pressure of grille well
Power.
The water outlet of grille well 2 is arranged in the bottom of grille well 2 and is connected with conditioning tank 3, and conditioning tank 3 passes through water pipe and detests
The front end in oxygen pond 4 is connected, and the first sewage pump 10 is arranged on water pipe, and the water outlet of anaerobic pond 4 is connected with the water inlet of anoxic pond 5,
The water outlet of anoxic pond 5 is connected with the water inlet of aerobic tank 6, is arranged between the end and the front end of anoxic pond 5 of aerobic tank 6 and mixes
Return pipe 11 mixes and the second sewage pump 12 is arranged on return pipe 11.Using the mixed liquor of " aerobic tank end → anoxic pond front end "
Reflux design, can reach better Nitrogen/Phosphorus Removal.
The water outlet of aerobic tank 6 is connected with sedimentation basin 7, and third sewage pump 13 is arranged in sedimentation basin 7, and third sewage pump 13 is logical
It crosses water pipe to be connected with the water inlet in the second wetland pond 8, the water outlet in the second wetland pond 8 is connected with the water inlet in third wetland pond 9.
The structure in the second wetland pond and third wetland pond is identical as the first wetland pond, and inside is respectively provided with bio-matrix and reed.In wetland
Pond sewage treatment unit, the design being connected using multiple wetland ponds: leading portion wetland pond makes full use of reed wetland well-developed
The microorganism that root system and its rhizosphere are largely proliferated, the organic matter in fast degradation sewage, makes sewage be purified；Rear end wetland pond
Reed release oxygen spread into water, so that water bottom is formed many anoxic zones and aerobic zone.In aerobic zone, pass through attachment
The effect of aerobic microbiological on root system, decomposes the organic matter in sewage, a part of inorganic matter (such as nitrogen and phosphorus) after mineralising,
It can be utilized by plant；In anoxic zone, sewage can be made to be purified by denitrification denitrogenation.By purifying twice above
Afterwards, wastewater treatment efficiency is more ideal.
First water quality detection well 14 is set between the water outlet in the second wetland pond 8 and the water inlet in third wetland pond 9, first
Detector is set in water quality detection well；The second water quality detection well 15, the second water quality detection is arranged in the water outlet end in third wetland pond 9
Well connects outlet pipe 16, and valve 17 is arranged on outlet pipe.Between two wetland ponds, the end of wetland pond, water quality inspection is devised
Well logging, and water quality condition is measured in real time using automatic water quality on-line detector, to reduce human cost, so that dirty
Water treatment efficiency is ensured.
Embodiment 2
The present embodiment provides a kind of methods using reed wetland purification sewage, comprising the following steps:
(1) sewage is introduced into the first wetland pond 1, reed, underfill biology base material is planted in the first wetland pond 1
Material, sewage are flowed through from reed root, matrix surface layer, then automatically flow into grille well 2；
(2) it is disposed with grid in grille well 2, by suspended substance biggish in water body or particle entrapment, sewage is from grille well bottom
The outlet pipe in portion automatically flows into conditioning tank 3；
(3) conditioning tank 3 is connected with the first sewage pump 10, and sewage tune stream is lifted into anaerobic pond by the first sewage pump 10
4；
(4) difficult to degrade macromolecule organic of the content of the dissolved oxygen in anaerobic pond 4 in 0.1mg/L, sewage is controlled
It is changed into the low molecule organic matter being easily degraded；
(5) from the bottom of anaerobic pond 4 automatically into anoxic pond 5, the content for controlling the dissolved oxygen in anoxic pond 5 exists sewage
In anoxic pond 5 denitrification occurs for 0.5mg/L, sewage；
(6) from the bottom of anoxic pond 5 automatically into aerobic tank 6, the content control of the dissolved oxygen in aerobic tank 6 exists sewage
4mg/L, the organic matter in sewage are further divided into inorganic matter；The sewage of 6 end of aerobic tank is returned by the second sewage pump 12
It flow to the front end of anoxic pond 5；
(7) sewage carries out preliminary sedimentation automatically into sedimentation basin 7 from aerobic tank 6, some mineralized materials or can not be given birth to
The sludge or particulate matter for changing reaction are deposited；
(8) oettIed sewage is promoted in the second wetland pond 8 by third sewage pump 13, by reed and bio-matrix
Double filtration and biochemical reaction, excessive nitrogen in sewage, phosphorus, silicon and heavy metal polluter be removed；
The sewage flowed out automatically in (9) second wetland ponds 8, by the first water quality detection well 14, water quality testing meter exists in real time
Line carries out sampling of water quality and detection；Then, sewage again passes by filtering and biochemical treatment, most automatically into third wetland pond 9
After automatically flow into the second water quality detection well 15, flowed out after water quality testing meter detection is qualified from outlet pipe 16.
Embodiment described above is only that preferred embodiments of the present invention will be described, not to the scope of the present invention
It is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical solution of the present invention
The various changes and improvements made should all be fallen into the protection scope that claims of the present invention determines.
Claims (3)
1. a kind of reed wetland sewage purification system, which is characterized in that including be sequentially connected the first wetland pond, grille well, tune
Save pond, anaerobic pond, anoxic pond, aerobic tank, sedimentation basin, the second wetland pond, third wetland pond；
First wetland pond setting water inlet and water outlet, water outlet are connected with the water inlet of grille well, the water outlet of grille well
The bottom that grille well is arranged in mouth is connected with conditioning tank, and conditioning tank is connected by water pipe with the front end of anaerobic pond, is arranged on water pipe
First sewage pump；The water outlet of anaerobic pond is connected with the water inlet of anoxic pond, the water outlet of anoxic pond and the water inlet of aerobic tank
It is connected, setting mixes return pipe between the end of aerobic tank and the front end of anoxic pond, mixes and the second sewage pump is arranged on return pipe；
The water outlet of aerobic tank is connected with sedimentation basin, and sedimentation basin is connected by water pipe with the water inlet in the second wetland pond, is arranged on water pipe
Third sewage pump；The water outlet in the second wetland pond is connected with the water inlet in third wetland pond, and the first water is arranged between the two
Quality inspection well logging, water quality detection well is interior to be arranged detector；The second water quality detection well, the second water is arranged in the water outlet end in third wetland pond
Quality inspection well logging connects outlet pipe, and valve is arranged on outlet pipe；
It is respectively provided with bio-matrix in first wetland pond, the second wetland pond and third wetland pond, grows reed on bio-matrix,
Water inlet and water outlet are separately positioned on above and below bio-matrix；
First wetland pond, grille well, conditioning tank are arranged from high to low；Anaerobic pond, anoxic pond, aerobic tank, sedimentation basin are from high to low
Arrangement；Second wetland pond and third wetland pond are arranged from high to low.
2. a kind of method using reed wetland purification sewage, which comprises the following steps:
(1) sewage is introduced into the first wetland pond, reed, underfill bio-matrix material, sewage is planted in the first wetland pond
It is flowed through from reed root, matrix surface layer, then automatically flows into grille well；
(2) it is disposed with grid in grille well, by suspended substance biggish in water body or particle entrapment, water outlet of the sewage from grating base
Pipe automatically flows into conditioning tank；
(3) conditioning tank is connected with the first sewage pump, and sewage lifting tune stream is entered anaerobic pond by the first sewage pump；
(4) in anaerobic pond, the macromolecule organic difficult to degrade in sewage is changed into the low molecule organic matter being easily degraded；
(5) from the bottom of anaerobic pond automatically into anoxic pond, denitrification occurs sewage in anoxic pond for sewage；
(6) for sewage from the bottom of anoxic pond automatically into aerobic tank, the organic matter in sewage is further divided into inorganic matter；
The sewage of aerobic tank end is back to the front end of anoxic pond by the second sewage pump；
(7) sewage carries out preliminary sedimentation automatically into sedimentation basin from aerobic tank, some mineralized materials or can not carry out biochemical reaction
Sludge or particulate matter be deposited；
(8) oettIed sewage is promoted in the second wetland pond by third sewage pump, by the dual of reed and bio-matrix
Filtering and biochemical reaction, excessive nitrogen in sewage, phosphorus, silicon and heavy metal polluter be removed；
The sewage flowed out automatically in (9) second wetland ponds, by the first water quality detection well, water quality testing meter real-time online carries out water
Matter sampling and detection；Subsequent sewage again passes by filtering and biochemical treatment, finally automatically flows into automatically into third wetland pond
Second water quality detection well flows out after water quality testing meter detection is qualified.
3. the method for purification sewage according to claim 2, which is characterized in that the content of the dissolved oxygen in the anaerobic pond
It controls in 0.2mg/L hereinafter, the content of the dissolved oxygen in anoxic pond controls the dissolution in 0.4mg/L-0.6mg/L, aerobic tank
The content of oxygen is controlled in 2mg/L-5mg/L.
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| CN201810660693.5A CN108975599A (en) | 2018-06-25 | 2018-06-25 | Reed wetland sewage purification system and effluent purification method |
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Cited By (3)
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| CN109970292A (en) * | 2019-05-09 | 2019-07-05 | 中铁四川生态城投资有限公司 | A kind of rainwater storage purification system |
| CN110040907A (en) * | 2019-04-19 | 2019-07-23 | 徐州工程学院 | The ecosystem of nitrogen phosphorus in a kind of removal aquiculture waste water |
| CN110330195A (en) * | 2019-08-21 | 2019-10-15 | 贵州工业职业技术学院 | A kind of drop wetland case treatment process of sewage |
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