CN106587346A - Method for removing total nitrogen in river course water by using an intermittent EHBR system - Google Patents
Method for removing total nitrogen in river course water by using an intermittent EHBR system Download PDFInfo
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- CN106587346A CN106587346A CN201510660642.9A CN201510660642A CN106587346A CN 106587346 A CN106587346 A CN 106587346A CN 201510660642 A CN201510660642 A CN 201510660642A CN 106587346 A CN106587346 A CN 106587346A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
Abstract
The invention relates to a method for removing the total nitrogen in river course water by using an intermittent EHBR system, and belongs to the field of environmental ecological restoration and management. In the prior art, the excessive total nitrogen in river course water causes eutrophication so as to cause the water body to deteriorate. A purpose of the present invention is to solve the problem in the prior art. According to the present invention, the intermittent aeration is achieved and the aeration strength is controlled by adjusting the starting/stopping time of the EHBR fan and the aeration pressure so as to remove the total nitrogen; the river course water having the excessive total nitrogen content and the serious cyanobacteria blooming is treated by using the intermittent EHBR technology, such that the bottleneck that the space division of the aerobic zone and the anaerobic zone is difficultly achieved in the river course water system through the traditional method is solved; and the method has advantages of stable operating, low cost, good treatment effect, low operating cost and flexible arrangement, and can help to establish and perfect the river course ecology restoration ability.
Description
Technical field
The present invention is a kind of method that batch (-type) EHBR systems remove total nitrogen in river water body, belongs to environmental ecology repairing and treating field.
Background technology
With the expansion of city size, the increase of quantity of wastewater effluent, China's environmental capacity of water starts to be becoming tight day.Total nitrogen, as one of the important indicator of body eutrophication, is the main oxygen consumption pollutant in water body, to Fish and the toxic effect of some aquatiles.All it is scabrous problem in terms of sewage treatment project or river water body reparation at present both at home and abroad for the removal of total nitrogen.Traditional denitrification process is all in time or spatially to be split aerobic zone with anoxic zone, nitrification and denitrification process is independently carried out.However, in river course system, being difficult to realize the space segmentation of aerobic zone and anaerobic zone.
Therefore, a kind of efficient technology for removing total nitrogen in river water body is sought, solving the problems, such as in river water body total nitrogen, exceeded to cause eutrophication in turn result in water body deterioration extremely urgent.
The content of the invention
It is an object of the invention to provide a kind of low and easy to implement method for removing total nitrogen in river water body of stable, low cost, high treating effect, operating cost, with effectively solving river water body eutrophication problem, improves human settlement.
The present invention is achieved through the following technical solutions：By adjust EHBR blower fans start-stop time and aeration pressure controlling aeration intensity, realize reaching the purpose of total nitrogen removal in the way of intermittent aerating.Intermittent aerating can make river water body produce dissolved oxygen concentration difference in different time sections.When blower fan is opened and aeration pressure is larger, dissolved oxygen concentration is higher, and now nitrifier becomes dominant microflora, and ammonia nitrogen generates under the effect of the oxygen nitrite, and further forms nitrate.When blower fan is closed or aeration pressure is less, dissolved oxygen concentration is relatively low, and this provides suitable environment for denitrification, and denitrifying bacterium becomes dominant microflora, and nitrate is converted into nitrogen by microbial action under anoxic conditions.Blower fan is so alternately opened and closed, river course batch (-type) is made in aerobic/anaerobic state, so as to realize removing the purpose of total nitrogen.
Specific embodiment
The method that the batch (-type) EHBR systems of the present invention remove total nitrogen in river water body, it is characterised in that what EHBR systems were mainly made up of pasture and water formula EHBR unit and blower fan.The core of pasture and water formula EHBR unit is made up of hollow-fibre membrane.The outer surface that the hollow-fibre membrane of pasture and water formula membrane module has excellent permeability energy, good stability and mechanical strength, hollow-fibre membrane has good bio-film colonization performance.Blower fan provides source of the gas and control aeration pressure for pasture and water formula EHBR unit.
The method for removing total nitrogen in river water body using this batch (-type) EHBR systems, including：The quantity of batch (-type) EHBR units is calculated according to the total nitrogen content and other water quality datas and discharge of river water body；Batch (-type) EHBR units are designed according to the structure and Hydrological characteristics in river course and lays form in river course, so that water body purification reaches optimum efficiency for design considerationss.
Assembling is connected by gas piping on river course bank with batch (-type) EHBR units.When blower fan is opened, hollow-fibre membrane supercharging oxygenation, dissolved oxygen concentration is higher in the biomembrane and water body on hollow-fibre membrane surface, nitrifier increased activity, and substantially, ammonia nitrogen is oxidized and generates nitrite Nitrification, and further forms nitrate.When blower fan is closed or aeration pressure is relatively low, dissolved oxygen concentration is relatively low in biomembrane and water body, and this provides suitable environment for denitrification, and denitrifying bacterium increased activity, nitrate is converted into nitrogen by microbial action under anoxic conditions.So batch (-type) carries out aeration, finally realizes the removal of total nitrogen.
The batch (-type) EHBR systems of the present invention remove the method for total nitrogen in river water body can not only be adapted to mobility water body, additionally it is possible to impounded body is applied to, including such as river course, swag, lake etc..
Through above-mentioned processing step, total nitrogen content is reduced in river water body, and all other water quality index will be stepped up；Cyanophyceae disappears, and stench is eliminated, and water body recovers normal light green color.Finally, the ecosystem of river water body will be stablized, and lasting self-purification capacity will be recovered.
Application example 1
Certain urban river length 2000m, width 15m, the depth of water about 2.5m, belongs to current water.Batch (-type) EHBR systems are mounted on into bottom of river channel, 20 meters are spaced and are arranged one group.The before processing river course belongs to《Water environment quality standard》（GB3838—2002）Bad V class water body, total nitrogen severe overweight, blue algae bloom.After batch (-type) EHBR technical methods are administered, the clearance of total nitrogen reaches 90%, reaches《Water environment quality standard》（GB3838—2002）III class water standard, stable, outlet effect is good.
Application example 2
Certain urban district channel length 3000m, width 20m, the depth of water about 2.0m, water body does not flow substantially.Batch (-type) EHBR systems are mounted on into bottom of river channel, 35 meters are spaced and are arranged one group.Before processing belongs to《Water environment quality standard》（GB3838—2002）Bad V class water body, total nitrogen is exceeded, and water body is smelly, has dead fish to float.After batch (-type) EHBR technical methods are administered, reach《Urban sewage reutilization water for scenic environment use water quality》（GB/T18921—2002）Water standard, water outlet is limpid, simple to operate, and operating cost is low.
Claims (5)
1. a kind of method that batch (-type) EHBR systems remove total nitrogen in river water body, it is characterised in that：What EHBR systems were mainly made up of pasture and water formula EHBR unit and blower fan；By adjust blower fan start-stop time and aeration pressure come realize intermittent aerating and control aeration intensity, and then realize total nitrogen remove.
2. the method that batch (-type) EHBR systems according to claim 1 remove total nitrogen in river water body, it is characterised in that：The core of pasture and water formula EHBR is made up of hollow-fibre membrane.
3. the method that batch (-type) EHBR systems according to claim 1 remove total nitrogen in river water body, it is characterised in that：Blower fan provides source of the gas and control aeration pressure for pasture and water formula EHBR unit.
4. the method that batch (-type) EHBR systems according to claim 1 remove total nitrogen in river water body, it is characterised in that：Adjustment blower fan start-stop time and aeration pressure come realize intermittent aerating and control aeration intensity, make river water body different time sections produce dissolved oxygen concentration difference；When blower fan is opened and aeration pressure is larger, dissolved oxygen concentration is higher, and nitrifier becomes dominant microflora, and ammonia nitrogen is oxidized to nitrite and nitrate；When blower fan is closed or aeration pressure is less, denitrifying bacterium becomes dominant microflora, and nitrate transformation is nitrogen, so as to realize that total nitrogen is removed.
5. the method that batch (-type) EHBR systems according to claim 1 remove total nitrogen in river water body, it is characterised in that：The method is applicable not only to mobility water body, and suitable for the purification of illiquidity water body.
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| CN201510660642.9A CN106587346A (en) | 2015-10-15 | 2015-10-15 | Method for removing total nitrogen in river course water by using an intermittent EHBR system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108545838A (en) * | 2018-06-26 | 2018-09-18 | 环境保护部华南环境科学研究所 | A kind of anchoring type polluted water body purified in situ processing method and processing device |
| CN114349283A (en) * | 2022-01-12 | 2022-04-15 | 沈阳师范大学 | Rural domestic sewage purification device and sewage purification method based on biodegradation |
| CN108545838B (en) * | 2018-06-26 | 2024-04-26 | 生态环境部华南环境科学研究所 | Anchoring type polluted water body in-situ purification treatment method and device |
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| CN2915846Y (en) * | 2005-12-20 | 2007-06-27 | 沈阳建筑大学 | Intermediate aeration and water-outlet film bioreactor |
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| CN101792208A (en) * | 2009-02-03 | 2010-08-04 | 中国地质大学（北京） | Sewage denitrification method, reaction device, reactor, biological membrane assembly and manufacturing method |
| CN104761046A (en) * | 2014-01-06 | 2015-07-08 | 天津海之凰科技有限公司 | Floating EHBR river lake water purification device system and method thereof |
| CN104761047A (en) * | 2014-01-07 | 2015-07-08 | 天津海之凰科技有限公司 | Water plant EHBR river water purifying device system and method thereof |
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Patent Citations (5)
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| CN2915846Y (en) * | 2005-12-20 | 2007-06-27 | 沈阳建筑大学 | Intermediate aeration and water-outlet film bioreactor |
| CN101792208A (en) * | 2009-02-03 | 2010-08-04 | 中国地质大学（北京） | Sewage denitrification method, reaction device, reactor, biological membrane assembly and manufacturing method |
| CN101671094A (en) * | 2009-10-09 | 2010-03-17 | 大连交通大学 | Single-stage whole process autotrophic denitrification sewage treatment device and technique thereof |
| CN104761046A (en) * | 2014-01-06 | 2015-07-08 | 天津海之凰科技有限公司 | Floating EHBR river lake water purification device system and method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108545838A (en) * | 2018-06-26 | 2018-09-18 | 环境保护部华南环境科学研究所 | A kind of anchoring type polluted water body purified in situ processing method and processing device |
| CN108545838B (en) * | 2018-06-26 | 2024-04-26 | 生态环境部华南环境科学研究所 | Anchoring type polluted water body in-situ purification treatment method and device |
| CN114349283A (en) * | 2022-01-12 | 2022-04-15 | 沈阳师范大学 | Rural domestic sewage purification device and sewage purification method based on biodegradation |
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