CN103253771B - 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
CN103253771B
CN103253771B CN201310157485.0A CN201310157485A CN103253771B CN 103253771 B CN103253771 B CN 103253771B CN 201310157485 A CN201310157485 A CN 201310157485A CN 103253771 B CN103253771 B CN 103253771B
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described
water
body
water body
device body
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CN201310157485.0A
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CN103253771A (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 wetland water body denitrogenation strengthening prosthetic device

Technical field

The present invention relates to a kind of artificial wetland water body denitrogenation strengthening 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 body eutrophication phenomenon to happen occasionally in the water bodys such as rivers and lakes, has had a strong impact on water ecology safety and population health.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 natural ecosystems to realize dirty water purification.In artificial wet land system, microorganism is main biotic population and the undertaker of absorption and degradation of contaminant.Generally, 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 Function of artificial swamp denitrogenation.But, denitrification need organic carbon source, nitrification need to consume a large amount of dissolved oxygens, thereby has limited the performance of artificial swamp potentiality aspect water body denitrification reparation.Meanwhile, in artificial swamp because denitrification also can produce N 2o greenhouse gases, are also unfavorable for the popularization of artificial swamp denitrogenation water body recovery technique.

Anammox is a kind of Process of Biological Nitrogen Removal, can under anaerobic taking ammonia as electron donor, nitrite be reduced to nitrogen, when realizing two kinds of nitrogen pollutants, removes.Than traditional biological denitrification process, it is good that Anammox has denitrification effect, without the advantage of oxygen and additional organic carbon source, has good application prospect.But general ammonia-containing water nitrite is lower, the source of nitrite becomes the bottleneck of restriction Anammox advantage performance thus.Half short distance nitration can change into nitrite by the ammonia of 50%-57%, can meet the demand of anaerobic ammonia oxidizing bacteria to matrix.But, half short distance nitration and Anammox process integration regulation and control parameter complexity, and half short distance nitration technique is difficult for steady in a long-term control.

For these problems, the present invention proposes a kind of artificial wetland water body denitrogenation strengthening prosthetic device, Anammox and half short distance nitration Fourier Series expansion technique are introduced to artificial swamp, the micro-oxygen ambient stable providing by emergent rhizosphere moves half short distance nitration, part ammonia is changed into nitrite and supply with the required matrix of Anammox bacteria growing, realize removing of Water element, make up the defect of Traditional Man wetland simultaneously, advantage is separately brought into play to greatest extent, thereby reached the effect that strengthening water body denitrification is repaired.

Summary of the invention

The present invention proposes the artificial wetland water body denitrogenation strengthening prosthetic device that a kind of denitrification effect is good, running cost is low.

A kind of artificial wetland water body denitrogenation strengthening prosthetic device of the present invention, 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 is planted in described sandy soil, by emergent rhizosphere micro-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 passes in described device body; The sidewall of described device body is provided with the water port of outlet valve.

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

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

Further, in described device body, hydraulic detention time is 7-13d, 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, make artificial swamp can realize preferably water body denitrification strengthening repairing effect; 2. this device is interior without adding pH in chemical reagent regulation system, has reduced running cost; 3. emergent root system provides micro-oxygen environment, can meet the demand of ammonia oxidation bacteria to 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 nitrogen pollutant, has good aesthetics and the ecological value.

Brief description of the drawings

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

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

Embodiment

Further illustrate the present invention below in conjunction with accompanying drawing

With reference to accompanying drawing:

A kind of artificial wetland water body denitrogenation strengthening prosthetic device of the present invention, 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 is planted in described sandy soil 11, by emergent 2 rhizosphere micro-oxygen environment construction Anammoxs 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 passes in described device body 1; The sidewall of described device body 1 is provided with the water port 13 of outlet valve.

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

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 the interior water body pH of device body 1 in 7.5-7.8.

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

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

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

Content described in this specification sheets embodiment is only enumerating of way of realization to 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 is also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.

Claims (5)

1. an artificial wetland water body denitrogenation strengthening 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 is planted in described sandy soil, by emergent rhizosphere micro-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 passes in described device body; The sidewall of described device body is provided with the water port of outlet valve; Described device body is the rectangle form pool of uncovered, and in inlet chest, water body is intermittently added in device body by intake pump; In described inlet chest, water body ammonia nitrogen concentration increases from low to high gradually, and flora in sandy soil is tamed, and makes anaerobic ammonia oxidizing bacteria and ammonia oxidation bacteria become gradually dominant microflora, and in described inlet chest, water body ammonia nitrogen concentration is 14-98mg/L.
2. a kind of artificial wetland water body denitrogenation strengthening prosthetic device as claimed in claim 1, is characterized in that: the thickness of described sandy soil is the 1/3-1/2 of described device body height.
3. a kind of artificial wetland water body denitrogenation strengthening prosthetic device as claimed in claim 1, is characterized in that: described slag addition can be adjusted according to practical operation situation, makes the interior water body pH of device body in 7.5-7.8.
4. a kind of artificial wetland water body denitrogenation strengthening prosthetic device as claimed in claim 1, is characterized in that: described emergent is selected according to geographical environment, preferably reed, cattail or the cattail and reed of well developed root system.
5. a kind of artificial wetland water body denitrogenation strengthening prosthetic device as claimed in claim 1, is characterized in that: in described device body, hydraulic detention time is 7-13d, 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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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

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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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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潜流式人工湿地污水处理系统硝化能力研究;刘超翔等;《环境科学》;20030130;第24卷(第01期);80-83 *

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