CN103253771A - Water body denitrification reinforcement restoring device of artificial wetland - Google Patents

Water body denitrification reinforcement restoring device of artificial wetland Download PDF

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Publication number
CN103253771A
CN103253771A CN2013101574850A CN201310157485A CN103253771A CN 103253771 A CN103253771 A CN 103253771A CN 2013101574850 A CN2013101574850 A CN 2013101574850A CN 201310157485 A CN201310157485 A CN 201310157485A CN 103253771 A CN103253771 A CN 103253771A
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China
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described
water body
denitrification
body
water
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CN2013101574850A
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Chinese (zh)
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CN103253771B (en
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金仁村
邢保山
王慧中
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杭州师范大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • Y02W10/18Constructed wetlands

Abstract

The invention relates to a water body denitrification reinforcement restoring device of an artificial wetland. The water body denitrification reinforcement restoring device of the artificial wetland comprises a device body, emergent aquatic plants, a water inlet pump and a water inlet tank, wherein sandy soil is filled in the bottom of the device body; slag covers on the surface of the sandy soil; the emergent aquatic plants are planted in the sandy soil; a water inlet of the water inlet pump is connected with the water inlet tank; a water outlet of the water inlet pump is led into the device body; and the side wall of the device body is provided with an outlet with an outlet valve. The water body denitrification reinforcement restoring device of the artificial wetland has the beneficial effects as follows: 1. coupling of anaerobic ammonia oxidation and half-partial nitrification is realized, and the water body denitrification reinforcement restoring ability is strong; 2. chemical reagents do not need to be added to regulate the pH value in the system, and the operating cost is reduced; 3. the emergent aquatic plants provide a micro-aerobic environment to meet the requirement of ammonia oxidizing bacteria on oxygen, and the activity of the ammonia oxidizing bacteria is not inhibited; and 4. the emergent aquatic plants absorb nitrogen and phosphor pollutants so as to remove nitrogen pollutant as well as phosphor. The device has a good asthetic and ecological value.

Description

A kind of artificial swamp water body denitrification is strengthened prosthetic device

Technical field

The present invention relates to a kind of artificial swamp water body denitrification and strengthen prosthetic device.

Background technology

Along with the aggravation of mankind's activity, global nitrogen cycle is unbalance to be on the rise.Industrial production is discharged a large amount of ammonia nitrogen waste waters in natural water, causes the body eutrophication phenomenon to happen occasionally in water bodys such as rivers and lakes, has had a strong impact on water ecology and has reached population health safely.Therefore, be necessary to carry out research and development and the application of water body denitrification recovery technique.

Artificial swamp is by artificial construction and supervision and control, and it can utilize physics, chemistry and biological synergy in the natural ecosystems to realize purification to sewage.In artificial wet land system, microorganism is main biotic population and the undertaker of absorption and degradation of contaminant.Generally speaking, be ammonia oxidation bacteria, NOB and denitrifying bacteria what play a major role aspect the removal of nitrogen, wherein the nitrification and denitrification effect of plant rhizosphere microbe is the main effect of artificial swamp denitrogenation.Yet, denitrification need organic carbon source, nitrification need consume a large amount of dissolved oxygens, thereby has limited the performance of artificial swamp potentiality aspect the water body denitrification reparation.Simultaneously, also can produce N owing to denitrification in the artificial swamp 2The O greenhouse gases also are unfavorable for the popularization of artificial swamp denitrogenation water body recovery technique.

Anammox is a kind of new bio denitrification process, can under anaerobic be that electron donor is reduced to nitrogen with nitrite with ammonia, removes when realizing two kinds of nitrate pollution things.Than the traditional biological denitrification process, it is good that Anammox has a denitrification effect, need not oxygen and add the advantage of organic carbon source, has good prospects for application.Yet nitrite content is lower in the general ammonia-containing water, and the source of nitrite becomes the bottleneck of restriction Anammox advantage performance thus.Half short distance nitration can change into nitrite with the ammonia of 50%-57%, can satisfy anaerobic ammonia oxidizing bacteria to the demand of matrix.Yet, half short distance nitration and Anammox process integration regulation and control parameter complexity, and half short distance nitration technology is difficult for control steady in a long-term.

At these problems, the present invention proposes a kind of artificial swamp water body denitrification and strengthen prosthetic device, Anammox and half short distance nitration Fourier Series expansion technique are introduced artificial swamp, the little oxygen ambient stable that provides by the emergent rhizosphere moves half short distance nitration, part ammonia is changed into nitrite supply with the required matrix of Anammox bacteria growing, nitrogen removes in the realization water body, remedy the defective of traditional artificial swamp simultaneously, make that advantage is brought into play to greatest extent separately, strengthen the effect that water body denitrification is repaired thereby reach.

Summary of the invention

The present invention proposes the artificial swamp water body denitrification that a kind of denitrification effect is good, running cost is low and strengthen prosthetic device.

A kind of artificial swamp water body denitrification of the present invention is strengthened prosthetic device, comprise device body, emergent, intake pump, inlet chest, the sandy soil that contains anaerobic ammonia oxidizing bacteria and ammonia oxidation bacteria is filled in the bottom of described device body, and at described sandy soil surface coverage slag; Described emergent plantation is in described sandy soil, by emergent rhizosphere little oxygen environment construction Anammox and half short distance nitration Fourier Series expansion technique; The water-in of described intake pump is connected with described inlet chest, and the water outlet of described intake pump feeds in the described device body; The sidewall of described device body is provided with the water port of outlet valve.

Further, described device body is the rectangle form pool of uncovered, and water body intermittently is added in the device body by intake pump in the inlet chest.

Further, the thickness of described sandy soil is the 1/3-1/2 of described device body height.

Further, described slag addition can be adjusted according to practical operation situation, makes the interior water body pH of device body be in 7.5-7.8.

Further, described emergent is selected according to geographical environment, preferably the reed of well developed root system, cattail or cattail and reed.

Further, the water body ammonia nitrogen concentration increases from low to high gradually in the described inlet chest, and flora in the sandy soil is tamed, and makes anaerobic ammonia oxidizing bacteria and ammonia oxidation bacteria become dominant microflora gradually, and the water body ammonia nitrogen concentration is 14-98mg/L in the described inlet chest.

Further, hydraulic detention time is 7-13d in the described device body, and described water port is at the above 5-10cm of sandy soil layer place.

The invention has the beneficial effects as follows: 1. this device can be realized the coupling of Anammox and half short distance nitration, makes artificial swamp can realize water body denitrification reinforcement repairing effect preferably; 2. need not to add pH in the chemical reagent regulation system in this device, reduced running cost; 3. the emergent root system provides little oxygen environment, can satisfy ammonia oxidation bacteria to the demand of oxygen, does not suppress the activity of anaerobic ammonia oxidizing bacteria simultaneously; 4. emergent growth absorbed nitrogen and phosphor contaminant can also dephosphorization when removing the nitrate pollution thing, have good aesthetics and the ecological value.

Description of drawings

Fig. 1 is structural representation of the present invention (direction of arrow represents the water body flow direction);

Fig. 2 is cross sectional representation of the present invention.

Embodiment

Further specify the present invention below in conjunction with accompanying drawing

With reference to accompanying drawing:

A kind of artificial swamp water body denitrification of the present invention is strengthened prosthetic device, comprise device body 1, emergent 2, intake pump 3, inlet chest 4, the sandy soil 11 that contains anaerobic ammonia oxidizing bacteria and ammonia oxidation bacteria is filled in the bottom of described device body 1, and at described sandy soil 11 surface coverage slags 12; Described emergent 2 plantations are in described sandy soil 11, by emergent 2 rhizospheres little oxygen environment construction Anammox and half short distance nitration Fourier Series expansion technique; The water-in of described intake pump 3 is connected with described inlet chest 4, and the water outlet of described intake pump 3 feeds in the described device body 1; The sidewall of described device body 1 is provided with the water port 13 of outlet valve.

Further, described device body 1 is the rectangle form pool of uncovered, and water body intermittently is added in the device body 1 by intake pump 3 in the inlet chest 4.

Further, the thickness of described sandy soil 11 is the 1/3-1/2 of described device body 1 height.

Further, described slag 12 additions can be adjusted according to practical operation situation, make device body 1 interior water body pH be in 7.5-7.8.

Further, described emergent 2 is selected reed, cattail or the cattail and reed of preferred well developed root system according to geographical environment.

Further, the water body ammonia nitrogen concentration increases from low to high gradually in the described inlet chest 4, flora in the sandy soil 11 is tamed, make anaerobic ammonia oxidizing bacteria and ammonia oxidation bacteria become dominant microflora gradually, the water body ammonia nitrogen concentration is 14-98mg/L in the described inlet chest 4.

Further, hydraulic detention time is 7-13d in the described device body 1, and described water port 13 is at the above 5-10cm of sandy soil layer place.

The described content of this specification sheets embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the specific form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.

Claims (7)

1. an artificial swamp water body denitrification is strengthened prosthetic device, it is characterized in that: comprise device body, emergent, intake pump, inlet chest, the sandy soil that contains anaerobic ammonia oxidizing bacteria and ammonia oxidation bacteria is filled in the bottom of described device body, and at described sandy soil surface coverage slag; Described emergent plantation is in described sandy soil, by emergent rhizosphere little oxygen environment construction Anammox and half short distance nitration Fourier Series expansion technique; The water-in of described intake pump is connected with described inlet chest, and the water outlet of described intake pump feeds in the described device body; The sidewall of described device body is provided with the water port of outlet valve.
2. a kind of artificial swamp water body denitrification as claimed in claim 1 is strengthened prosthetic device, and it is characterized in that: described device body is the rectangle form pool of uncovered, and water body intermittently is added in the device body by intake pump in the inlet chest.
3. a kind of artificial swamp water body denitrification as claimed in claim 1 is strengthened prosthetic device, and it is characterized in that: the thickness of described sandy soil is the 1/3-1/2 of described device body height.
4. a kind of artificial swamp water body denitrification as claimed in claim 1 is strengthened prosthetic device, and it is characterized in that: described slag addition can be adjusted according to practical operation situation, makes the interior water body pH of device body be in 7.5-7.8.
5. a kind of artificial swamp water body denitrification as claimed in claim 1 is strengthened prosthetic device, and it is characterized in that: described emergent is selected according to geographical environment, reed, cattail or the cattail and reed of preferred well developed root system.
6. a kind of artificial swamp water body denitrification as claimed in claim 1 is strengthened prosthetic device, it is characterized in that: the water body ammonia nitrogen concentration increases from low to high gradually in the described inlet chest, flora in the sandy soil is tamed, make anaerobic ammonia oxidizing bacteria and ammonia oxidation bacteria become dominant microflora gradually, the water body ammonia nitrogen concentration is 14-98mg/L in the described inlet chest.
7. a kind of artificial swamp water body denitrification as claimed in claim 1 is strengthened prosthetic device, it is characterized in that: hydraulic detention time is 7-13d in the described device body, and described water port is at the above 5-10cm of sandy soil layer place.
CN201310157485.0A 2013-04-27 2013-04-27 Water body denitrification reinforcement restoring device of artificial wetland CN103253771B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105541040A (en) * 2016-01-22 2016-05-04 深圳大学 Method and device for short-cut nitrification and denitrification in constructed wetland

Citations (3)

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Publication number Priority date Publication date Assignee Title
CN102260021A (en) * 2011-06-01 2011-11-30 同济大学 Process and device for deep denitrogenation of domestic wastewater without additional carbon source
CN102464406A (en) * 2010-11-09 2012-05-23 中国科学院生态环境研究中心 Method for realizing denitrification of anaerobic ammonium oxidation by utilizing constructed wetland
CN102557330A (en) * 2010-12-20 2012-07-11 中国科学院城市环境研究所 An/O type composite artificial wetland system for enhanced treatment of low-C/N ratio wastewater

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Publication number Priority date Publication date Assignee Title
CN102464406A (en) * 2010-11-09 2012-05-23 中国科学院生态环境研究中心 Method for realizing denitrification of anaerobic ammonium oxidation by utilizing constructed wetland
CN102557330A (en) * 2010-12-20 2012-07-11 中国科学院城市环境研究所 An/O type composite artificial wetland system for enhanced treatment of low-C/N ratio wastewater
CN102260021A (en) * 2011-06-01 2011-11-30 同济大学 Process and device for deep denitrogenation of domestic wastewater without additional carbon source

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105541040A (en) * 2016-01-22 2016-05-04 深圳大学 Method and device for short-cut nitrification and denitrification in constructed wetland
CN105541040B (en) * 2016-01-22 2017-12-26 深圳大学 A kind of method and its device that short-cut nitrification and denitrification is realized in artificial swamp

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