CN104556377B - A kind of method of the low stain water body nitric efficiency improving low ratio of carbon to ammonium - Google Patents
A kind of method of the low stain water body nitric efficiency improving low ratio of carbon to ammonium Download PDFInfo
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- CN104556377B CN104556377B CN201410777631.4A CN201410777631A CN104556377B CN 104556377 B CN104556377 B CN 104556377B CN 201410777631 A CN201410777631 A CN 201410777631A CN 104556377 B CN104556377 B CN 104556377B
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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
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
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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
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Biodiversity & Conservation Biology (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
A kind of method of the low stain water body nitric efficiency improving low ratio of carbon to ammonium, it is to build a surface current artificial wetland and a level stream ecological gravel bed and they are used placed in series, allow low-pollution water flow to from surface current artificial wetland, flow out from level stream ecological gravel bed.Denitrification effect is improved by the Denitrification at surface current artificial wetland's water sludge interface；Absorb part nitrogen and phosphorus pollutants by submerged plant, floatingleaved plant simultaneously, and by the secretion of root system of plant and the decomposition of plant residue, improve available organic content in water body；Level stream ecological gravel bed forms anaerobic environment beneficially denitrifying bacterium apposition growth, by gravel, the absorption of zeolite mixed-matrix, filter, the effect such as sedimentation, ammonia nitrogen, suspension content in reduction water, improve and water clarity；Meanwhile, the organic matter in surface current artificial wetland's water inlet can be again that the Denitrification in gravel bed provides material base, thus overall improved system denitrification effect.
Description
Technical field
The present invention relates to the low-pollution water denitrification system of low ratio of carbon to ammonium, particularly relate to a kind of with purify Sewage Plant tail water,
The technical method of the polluted-water of the low C/N ratio that agricultural area source, nitrate micro-polluted surface water body etc. are representative,
Set up Surface Flow Constructed Wetlands, remove water body by the Denitrification at surface current artificial wetland's water sludge interface
Part nitrate, can also pass through secretion and the plant residue of the water plant root system of plantation in wet land system simultaneously
Decomposition, increase the available content of organics in water body；Series connection ecological gravel bed after surface current artificial wetland,
The internal easily formation anaerobic environment of gravel bed beneficially denitrifying bacterium apposition growth, owing to surface current artificial wetland is
The C/N of system water outlet increases, and after entering gravel bed, anti-nitration reaction can effectively occur under anaerobic environment,
Improving denitrification effect, gravel bed has good removal effect to float in water, it is possible to increase go out water clarity and scape
See effect, belong to low stain water body eco-treatment technology field.
Background technology
At present, along with the Large scale construction of municipal sewage plant of China, substantial amounts of Sewage Plant tail water is had every day to produce
Raw；The nitrogen content of Sewage Plant tail water, compared with surface water body, belongs to heavy polluted water, if directly discharged, can take
Substantial amounts of nitrogen load is carried to enter receiving water body.Additionally, agricultural area source is owing to there being various lots of feature, also can carry
Substantial amounts of nitrate enters Hu Ku.So, to control to enter the nitrogen load of Hu Ku, need this kind of low stain water body
Carry out further ecological purification process.And the tail water of Sewage Plant is nitrate with the main nitrogen form in agricultural area source
Nitrogen, the maximum feature of this kind of water body is exactly low-carbon high-nitrogen, and C/N ratio is relatively low, is therefore taken off by biological denitrification
The bottleneck of nitrogen essentially consists in and lacks utilizable organic carbon source in water body.
Often use now the technological means of artificial swamp to process this kind of low-pollution water, but owing to lacking carbon source,
Denitrification effect is the best；And the means of additional carbon not only increase operating cost, too increase Wetland clogging
Probability, but also there is the probability of secondary pollution.Therefore, research and development remove the low-pollution water of low ratio of carbon to ammonium effectively
In body, the technical method of nitrate has very important realistic meaning.
Summary of the invention
The purpose of the present invention, is the deficiency of low stain water body denitrification efficiency for existing low C/N ratio, it is provided that a kind of
The method improving the low stain water body nitric efficiency of low ratio of carbon to ammonium.
To achieve these goals, the technical scheme is that a kind of low stain water body improving low ratio of carbon to ammonium takes off
The method of nitrogen efficiency, is to build a surface current artificial wetland and a level stream ecological gravel bed and by them with managing
Connecting in road, allows low-pollution water flow to from surface current artificial wetland, flows out from level stream ecological gravel bed.
The depth of water of described surface current artificial wetland controls at 0.3-0.6m, interior kind of floatingleaved plant and submerged plant, floating leaf
The collective coverage of plant and submerged plant is not less than the 40% of surface current artificial wetland's area.
Described floatingleaved plant is Herba Eichhorniae, and submerged plant includes water caltrop, Herba vallisneriae Spiralis；Herba Eichhorniae corral is planted.
The planar dimension of described surface current artificial wetland is 20 × 10m, and the depth of water is 0.5m.
The volume ratio placing gravel and zeolite, gravel and zeolite inside described level stream ecological gravel bed is 1: 1, grain
Footpath scope 5-15cm.
The planar dimension of described level stream ecological gravel bed is 4 × 3m, and the degree of depth is 1.5m.
The a diameter of 50mm of inlet channel of described level stream ecological gravel bed, a diameter of DN50 of outlet conduit.
Surface current artificial wetland in the present invention can play the denitrification usefulness of artificial swamp water sludge interface effectively；
In wetland, plant floatingleaved plant and submerged plant, a small amount of nitrogen phosphorus substance can be assimilated by the growth of plant, more main
Want is, it is possible to use the secretion of water plant root system and the decomposition of plant residue, improves in water body available organic
The content of thing.
Level stream ecological gravel bed in the present invention can be with apposition growth microorganism.Gravel bed can play cutting of filler
Stay and adsorption, reduce ammonia nitrogen and the content of float in water inlet；Additionally, gravel bed divides with ambient atmosphere environment
Separate to come, easily form anaerobic environment, the effect of the heterotroph denitrifying bacterium by being attached on inner stuffing, fill
Divide and utilize the Organic substance carried in surface current artificial wetland's water outlet, water inlet nitrate is carried out good denitrification and takes off
Remove.Thus it is effectively improved effluent quality.
The present invention is directed to the water quality characteristic of low stain water body low-carbon high-nitrogen, at mating surface artificial wetland water sludge interface
Characteristic and biological denitrification principle, by arranging the suitable depth of water, strengthening water body and bed mud interface contact machine
Rate, utilizes the denitrifying bacterium of interface, organic carbon source and anaerobic-aerobic microenvironment, improves surface current artificial wetland
Denitrifying capacity, promote effluent quality；On the other hand planting aquatic plants in surface current artificial wetland, passes through
The secretion of water plant root system and the decomposition of plant residue, for providing available organic matter in water；And follow-up setting
Ecological gravel bed can build anaerobic environment, and beneficially denitrifying bacterium apposition growth such that it is able to plays further
Denitrification denitrogenation effect, the carrier such as gravel that gravel bed is internal to be placed, zeolite, it is possible to play and adsorb, intercept, sink
The functions such as shallow lake, have good removal effect to the ammonia nitrogen in water inlet, float.This method can be effectively improved low
The denitrification efficiency of carbon height nitrogen low stain water body.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram of the method employing of the present invention.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
The technical method of a kind of low stain water body denitrification efficiency improving low ratio of carbon to ammonium, is to build a surface person who lives in exile
Work wetland and a level stream ecological gravel bed and by them with placed in series, make low-pollution water wet from surface turning flow artificial
Flow to, from level stream ecological gravel bed flow out, reach improve low ratio of carbon to ammonium low stain water body denitrification efficiency.
Its apparatus structure used as it is shown in figure 1, label in figure, 1 be water inlet pipe, 2 be surface current artificial wetland, 3
For floatingleaved plant, 4 be submerged plant, 5 be gravel bed inlet channel, 6 be gravel bed water distribution tracery wall, 7 for gravel
Bed gravel zeolite mixed-matrix, 8 for gravel bed catchment tracery wall, 9 be gravel bed outlet pipe, 10 level stream ecology gravels
Stone bed；Solid arrow show water (flow) direction.In surface current artificial wetland 2, the depth of water controls at 0.3-0.6m,
Plantation floating plant 3 and submerged plant 4, area covering degree is not less than the 40% of free water surface wetland area；Level stream
Ecological gravel bed 10 is rectangular configuration, and both sides are respectively provided with into water, wet well, is used for being distributed and collect gravel bed
Inlet and outlet water, in gravel bed place gravel, zeolite mixed-matrix 7.
It it is below a concrete Application Example of the present invention.
It is the tail water of certain municipal sewage plant that experiment processes object, and major pollutants are nitrate nitrogen, ammonia nitrogen.Survey
In fixed water inlet, nitrate nitrogen content is 8～12mg/L, ammonia-nitrogen content 2～6mg/L, COD content 23～48mg/L.
Surface current artificial wetland and ecological gravel bed combined system, wherein surface current artificial wetland's planar dimension are built
Being 20 × 10m, control available depth is 0.5m, wetland kind planting submerged plant Herba vallisneriae Spiralis, water caltrop, and corral kind
Planting floatingleaved plant Herba Eichhorniae, water plant area control is at the 40-50% of Wetland Area.One level of synchronized construction
Stream ecological gravel bed, planar dimension is 4 × 3m, degree of depth 1.5m, and gravel, zeolite mixed-matrix (body are placed in the inside
Long-pending ratio 1: 1), particle size range 5-15cm, process the tail water water yield about 100m every day3.Level stream ecological gravel bed is entered
Waterpipe diameter 50mm, after process, the water pipeline of a piece DN50 is transported to receiving water body.
After system stablizes half a year after building up, monitoring Inlet and outlet water water quality, in gravel bed water outlet, nitrate content drops to
3.2～4.8mg/L, ammonia-nitrogen content 0.14～0.42mg/L, COD content 18～37mg/L, transparency stable maintains
1.0～1.5m, the denitrogenation for Sewage Plant tail water of building of system serves good invigoration effect.
Claims (5)
1. the method for the low stain water body nitric efficiency improving low ratio of carbon to ammonium, it is characterised in that build
Surface current artificial wetland and a level stream ecological gravel bed and by them with placed in series, allow low-pollution water from surface
Artificial wetland flows to, and flows out from level stream ecological gravel bed；
The depth of water of described surface current artificial wetland controls at 0.3-0.6m, interior kind of floatingleaved plant and submerged plant, floating leaf
The collective coverage of plant and submerged plant is not less than the 40% of surface current artificial wetland's area；
The volume ratio placing gravel and zeolite, gravel and zeolite inside described level stream ecological gravel bed is 1:1, grain
Footpath scope 5-15cm.
The method of the low stain water body nitric efficiency of raising low ratio of carbon to ammonium the most according to claim 1, it is special
Levying and be, described floatingleaved plant is Herba Eichhorniae, and submerged plant includes water caltrop, Herba vallisneriae Spiralis；Herba Eichhorniae corral is planted.
The method of the low stain water body nitric efficiency of raising low ratio of carbon to ammonium the most according to claim 1, it is special
Levying and be, the planar dimension of described surface current artificial wetland is 20 × 10m, and the depth of water is 0.5m.
The method of the low stain water body nitric efficiency of raising low ratio of carbon to ammonium the most according to claim 1, it is special
Levying and be, the planar dimension of described level stream ecological gravel bed is 4 × 3m, and the degree of depth is 1.5m.
The method of the low stain water body nitric efficiency of raising low ratio of carbon to ammonium the most according to claim 1, it is special
Levy and be, a diameter of 50mm of inlet channel of described level stream ecological gravel bed, a diameter of DN50 of outlet conduit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410777631.4A CN104556377B (en) | 2014-12-15 | 2014-12-15 | A kind of method of the low stain water body nitric efficiency improving low ratio of carbon to ammonium |
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| CN201410777631.4A CN104556377B (en) | 2014-12-15 | 2014-12-15 | A kind of method of the low stain water body nitric efficiency improving low ratio of carbon to ammonium |
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| CN104556377A CN104556377A (en) | 2015-04-29 |
| CN104556377B true CN104556377B (en) | 2017-01-04 |
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| CN105601054A (en) * | 2016-03-18 | 2016-05-25 | 北京科技大学 | Rural domestic breeding mixed sewage treatment integrated system |
| CN106927571B (en) * | 2016-12-30 | 2020-06-09 | 山东大学 | Method for enhancing denitrification of constructed wetland by using strong carbon-secreting modified biochar |
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| US6896805B2 (en) * | 2003-10-20 | 2005-05-24 | Dharma Living Systems, Inc. | Tidal vertical flow wastewater treatment system and method |
| CN201128703Y (en) * | 2007-06-01 | 2008-10-08 | 山东大学 | Subsurface flow and surface flow alternate constructed wetland |
| CN101481177A (en) * | 2009-01-15 | 2009-07-15 | 北京师范大学 | Surface flow-horizontal undercurrent composite manpower wetland system |
| CN103739081B (en) * | 2014-01-13 | 2015-10-14 | 上海交通大学 | A kind of current wetland device for low-pollution water strengthened denitrification |
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