CN102145960B - Device and method for denitrifying and dephosphorizing ecological protection multi-level filtration wall in water source area on rural land surface - Google Patents
Device and method for denitrifying and dephosphorizing ecological protection multi-level filtration wall in water source area on rural land surface Download PDFInfo
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Abstract
The invention relates to a device and a method for protecting the ecology in a water source area on a rural land surface. The device is formed by integrating multi-level functional filtration walls and comprises a water distribution channel, an aerobic segment filtration wall, an anoxic segment filtration wall, a biological reinforcement purification filtration wall, a water collection sedimentation tank and an excessive water overflow groove, wherein the aerobic segment filtration wall, the anoxic segment filtration wall and the biological reinforcement purification filtration wall are connected in series with one another. The invention has the advantages that: the method has a good treatment effect, is low in investment and operation cost, is simple in maintenance, makes the functional characteristics of all levels of filtration walls distinctive, is definite in labor division, is used for treating rural domestic sewage and farmland initial-stage runoff drained water, is suitable for biological protection on the water source area of the rural land surface, a lake reservoir and the like, can be used for treating small-scale domestic sewage and is an economic and effective method for biological protection and small-scale domestic sewage treatment.
Description
Technical field
What the present invention relates to is surface water seedbed, a kind of rural area ecological protection cascade filtration wall denitrification dephosphorization apparatus and method.The purification and the ecological reestablishment field that belong to the environment protection polluted water body.
Background technology
Ecological protections such as surface water seedbed, rural area, Hu Ku are mainly method and measures such as artificial swamp, waterplant bed and preposition storehouse at present.Artificial swamp is simple, but usually denitrification effect is relatively poor, nutritive substances such as the nitrogen that only relies on plant absorbing often to be difficult to remove to cause eutrophication such as tap water seedbed, Hu Ku, phosphorus; Waterplant bed plant is in the winter time withered season, and its pollutant removal often is difficult to be guaranteed; Preposition storehouses etc. are main with ecological purification, and its process object is generally has mixed the pollution of area source that produces in the life in the countryside production process, and the sewage of low concentration of precipitation runoff pollution etc.; Processing efficiency is low; Treatment effect is not good, and requires hydraulic detention time longer usually, and floor space is bigger.The ecological protection in surface water seedbed, rural area, the farmland drainage that needs to produce in the domestic sewage in rural areas by using, agricultural production process of reply higher concentration etc. also need be tackled the problem that momentary load that the rainfall later stage lower concentration runoff draining water yield causes more greatly increases.
Summary of the invention
What the present invention proposed is surface water seedbed, a kind of rural area ecological protection cascade filtration wall denitrification dephosphorization apparatus and method; Its device is built in the upper reaches, earth surface water source ground, rural area, and with interception domestic sewage in rural areas by using and agricultural run-off draining, its purpose is intended to overcome the above-mentioned defective of existing in prior technology; Be based on first collection and treatment high density pollution water, the theory of lower concentration discharging again; Biological treatment and ecological purification combine, and are conceived to handle plant absorbing, and filtrate is held back absorption and waited effect further to remove pollutent;
Four, the water outlet of biological reinforced purification filtering wall gets into the settling tank that catchments through the permeable tracery wall of D, and the suspended matter post precipitation enters Hu Ku through the water outlet crest of weir.
3, surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that aerobic section filters fills the wide aperture filtrate within the walls; Aerobic section filters wall surface plantation well developed root system, and the waterplant that oxygen carrying capacity is strong is built aerobic environment.
4, surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that the anoxic section filters the combination filtrate fill slowly-releasing carbon source and small-bore within the walls; The anoxic section is filtered the wall surface and is not planted plant, and flow process is longer, builds anoxic-anaerobic environment.
5, surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that filtering wall and constituting aerobic-anoxic-anaerobism alternative environment by aerobic section filtration wall, anoxic section; Removing the organic while; Nitrated-denitrifying whole process denitrogenation can be realized, the clearance of nitrogen can be effectively improved.
6, surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that biological reinforced clean-up stage is filtered fills the wide aperture filtrate that is beneficial to plant-growth within the walls; Surface plantation plant; Nutritive substances such as mainly not removed as yet organism in removal leading portion aerobic section filtration wall, the water outlet of anoxic section filtration wall, and further absorbed nitrogen, phosphorus play the effect of strengthened purification.
7, surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that the water outlet of biological reinforced purification filtering wall gets into the settling tank that catchments through permeable tracery wall, the suspended matter post precipitation enters Hu Ku through the water outlet crest of weir.
8, surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that the later stage lower concentration runoff draining of being provided with of water overflow groove under can overflow condition in rainy season, alleviated multistage functional filtration wall hydraulic load.Make sewage filter wall, anoxic section filtration wall, biological reinforced purification filtering wall and catchment at distributing flue, aerobic section and form long fluidised form between the settling tank, the influent weir open height is lower than the overflow weir open height.
Beneficial effect of the present invention is:
1, owing to adopts aerobic section to filter wall, anoxic section filtration wall arranged in series mode; Built aerobic-anoxic-anaerobism alternative environment, more conventional ecological purification method has significantly improved denitrification effect, and because save the step that refluxes; The device flow process is simple, and daily administration is very easy.
2, aerobic section filters wall reoxygenation mode for the distributing flue drop oxygenation combines aquatic plant root oxygen transmission, does not need consumption of power, has save the required power consumption of aeration, and investment and working cost are low, have simplified the complexity of running maintenance.
3, it is additional as denitrifying carbon source that the anoxic section is filtered the agricultural wastes of selecting in the wall filtrate in the agricultural production process, both solved the insufficient problem of denitrifying carbon source in the WWT, for the recycling of agricultural wastes thinking is provided again.
4, cross the setting of water overflow wall, can effectively solve under the condition in rainy season, the instantaneous hydraulic load that causes more greatly because of the later stage lower concentration runoff draining water yield increases problem.
Description of drawings
Fig. 1 is surface water seedbed, a rural area ecological protection cascade filtration wall denitrification dephosphorization apparatus structured flowchart.
Fig. 2 is surface water seedbed, a rural area ecological protection cascade filtration wall denitrification dephosphorization apparatus vertical view.
Fig. 3 is surface water seedbed, a rural area ecological protection cascade filtration wall denitrification dephosphorization apparatus 1-1 sectional view.
Fig. 4 is surface water seedbed, a rural area ecological protection cascade filtration wall denitrification dephosphorization apparatus 2-2 sectional view.
Fig. 5 is surface water seedbed, a rural area ecological protection cascade filtration wall denitrification dephosphorization apparatus 3-3 sectional view.
Embodiment
Further the present invention is described further below in conjunction with accompanying drawing.
The contrast accompanying drawing; Its main body is a brick wall structure; Comprise in the brick wall that distributing flue, aerobic section filter wall, the filtration of anoxic section wall, biological reinforced purification filtering wall, settling tank and mistake water overflow groove catchment; Wherein distributing flue, aerobic section filter wall, the anoxic section is filtered wall, biological reinforced clean-up stage filtration wall, the settling tank arranged in series of catchmenting; Distributing flue and aerobic section filter between wall the permeable tracery wall of A are set, and aerobic section filters between wall and anoxic section filtration wall the permeable tracery wall of B is set, and the anoxic section is filtered between wall and biological reinforced purification filtering wall the permeable tracery wall of C is set; Biological reinforced purification filtering wall and catchment the permeable tracery wall of D is set between settling tank; Distributing flue and catchment partition wall together is set between the settling tank makes that sewage filters wall at distributing flue, aerobic section, the anoxic section is filtered wall, biological reinforced purification filtering wall and catchmented and forms long fluidised form between the settling tank, and the influent weir open height is lower than the overflow weir open height.
Utilize the denitrification and dephosphorization method of this device, the steps include: surface water seedbed, rural area ecological protection
One, the mode fallen through oxygenation of sewage gets into distributing flue; Get into aerobic section through the permeable tracery wall of A and filter wall; Aerobic microbiological is removed organism and is also accomplished nitrification, realizes the conversion of ammonia nitrogen to nitric nitrogen, the filtrate pollution substances such as absorption phosphorus that dam simultaneously; Aerobic section filters wall surface plantation well developed root system plant, but through rhizome also nutritive substance such as absorbed nitrogen, phosphorus to the inner oxygen therapy of filtrate the time;
Two, aerobic section filters the wall water outlet and filters wall through the long anoxic section of the permeable tracery wall entering of B flow process; Sewage forms anoxic-anaerobic environment gradually in the plug-flow process; The oxygen property denitrifying bacteria of holding concurrently is used to water middle and high concentration nitrification liquid and realizes denitrification denitrogenation, and the broken agricultural wastes of blended are that denitrification provides required carbon source in the filtrate of small-bore;
Three, the anoxic section is filtered the wall water outlet and is got into biological reinforced purification filtering wall through the permeable tracery wall of C, and through plant absorbing, filtrate is held back absorption and waited effect further to remove pollutent;
Four, the water outlet of biological reinforced purification filtering wall gets into the settling tank that catchments through the permeable tracery wall of D, and the suspended matter post precipitation enters Hu Ku through the water outlet crest of weir.
Described aerobic section filters wall and fills the wide aperture filtrate, and aerobic section filters wall surface plantation well developed root system, and the waterplant that oxygen carrying capacity is strong is built aerobic environment;
The anoxic section is filtered the combination filtrate of filling slowly-releasing carbon source and small-bore within the walls, and the anoxic section is filtered the wall surface and do not planted plant, and flow process is longer, builds anoxic-anaerobic environment;
Filter wall and constitute aerobic-anoxic-anaerobism alternative environment by aerobic section filtration wall, anoxic section,, realize nitrated-denitrifying whole process denitrogenation, can effectively improve the clearance of nitrogen removing the organic while;
Biological reinforced clean-up stage is filtered and is filled the wide aperture filtrate that is beneficial to plant-growth within the walls; Biological reinforced clean-up stage is filtered wall surface plantation plant; Nutritive substances such as mainly not removed as yet organism in removal leading portion aerobic section filtration wall, the water outlet of anoxic section filtration wall, and further absorbed nitrogen, phosphorus play the effect of strengthened purification; The water outlet of biological reinforced purification filtering wall gets into the settling tank that catchments through permeable tracery wall, and the suspended matter post precipitation enters Hu Ku through the water outlet crest of weir.Cross the later stage lower concentration runoff draining of being provided with of water overflow groove under can overflow condition in rainy season, alleviate multistage functional filtration wall hydraulic load.
Embodiment
The mode that sewage falls through oxygenation gets into distributing flue, and distributing flue water inlet crest of weir is lower than brick wall 100mm, can be the sawtooth weir; Also can be straight weir, the sewage after the oxygenation gets into aerobic section through the permeable tracery wall of A and filters wall; Filling filtrate is wide aperture filtrates such as perlite or haydite, packing height 400～500mm, surface plantation FENGCHECAO or mater convolvulus; About permeable tracery wall ultrafiltration material height 150～200mm, thickness is about 115mm for the standard square bat, brick pitch-row 60～80mm; Guarantee that tracery wall perforate ratio is greater than 1/3; Aerobic section filters the aerobic microbiological of filler enrichment within the walls and removes organism and accomplish nitrification, realizes the conversion of ammonia nitrogen to nitric nitrogen, the filtrate pollution substances such as absorption phosphorus that can dam simultaneously; Surface plantation well developed root system plant FENGCHECAO or mater convolvulus, but through rhizome also nutritive substance such as absorbed nitrogen, phosphorus to the inner oxygen therapy of filtrate the time.Aerobic section filters the wall water outlet and filters wall through the long anoxic section of the permeable tracery wall entering of B flow process; The permeable tracery wall specification of B is with the permeable tracery wall of A; It is that aerobic section filters more than the wall twice that the anoxic section is filtered wall flow process length; Filling filtrate is that cinder combines the broken agricultural wastes below the length 50mm, and packing height 500～600mm, sewage progressively form anoxic-anaerobic environment in the plug-flow process; The double oxygen property denitrifying bacteria of enrichment utilizes aerobic section to filter wall water outlet middle and high concentration nitrification liquid and realizes denitrification denitrogenation on cinder filtrate and the broken agricultural wastes, for denitrification required carbon source is provided after the broken agricultural wastes corruption below the length 50mm.The anoxic section is filtered the wall water outlet and is got into biological reinforced purification filtering wall through the permeable tracery wall of C, and the permeable tracery wall specification of C is with the permeable tracery wall of A, and biological reinforced purification filtering is filled perlite or ceramic grain filter within the walls; Packing height 400～500mm; Surface plantation calamus, reed or Chinese celery etc., through plant absorbing, filtrate is held back the further pollutents of removing such as absorption; The water outlet of biological reinforced purification filtering wall gets into the settling tank that catchments through the permeable tracery wall of D; The permeable tracery wall specification of D is with the permeable tracery wall of A, and the effluent weir open height is with biological reinforced purification filtering filtrate height within the walls, and the suspended matter post precipitation is gone into Hu Ku through effluent weir effected clear water in the water outlet.
Filter wall to the whole flow process of biological reinforced purification filtering wall from aerobic section, the filter material surface height is identical.Height of weir plate is set is lower than brick wall height 50mm, be higher than into water crest of weir 50mm.Under the non-rainy season condition; Domestic sewage in rural areas by using and agricultural run-off draining etc. get into distributing flue through the water inlet crest of weir; Under the rainy season condition; The farmland initial stage runoff draining of domestic sewage in rural areas by using and high pollution concentration gets into distributing flue through the water inlet crest of weir, and the runoff draining that the later stage Pollutant levels are lower directly enters water body through overflow wall through overflow groove, to alleviate multistage functional filtration wall hydraulic load.
Claims (8)
1. rural area surface water seedbed ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that main body is a brick wall structure; Comprise in the brick wall that distributing flue, aerobic section filter wall, the filtration of anoxic section wall, biological reinforced purification filtering wall, settling tank and mistake water overflow groove catchment; Wherein distributing flue, aerobic section filter wall, the anoxic section is filtered wall, biological reinforced clean-up stage filtration wall, the settling tank arranged in series of catchmenting; Distributing flue and aerobic section filter between wall the permeable tracery wall of A are set, and aerobic section filters between wall and anoxic section filtration wall the permeable tracery wall of B is set, and the anoxic section is filtered between wall and biological reinforced purification filtering wall the permeable tracery wall of C is set; Biological reinforced purification filtering wall and catchment the permeable tracery wall of D is set between settling tank; Distributing flue and catchment partition wall together is set between the settling tank makes that sewage filters wall at distributing flue, aerobic section, the anoxic section is filtered wall, biological reinforced purification filtering wall and catchmented and forms long fluidised form between the settling tank, and the influent weir open height is lower than the overflow weir open height.
2. surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that aerobic section filters fills the wide aperture filtrate within the walls; Aerobic section filters wall surface plantation well developed root system, and the waterplant that oxygen carrying capacity is strong is built aerobic environment.
3. surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that the anoxic section filters the combination filtrate fill slowly-releasing carbon source and small-bore within the walls; The anoxic section is filtered the wall surface and is not planted plant, and flow process is longer, builds anoxic-anaerobic environment.
4. surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that filtering wall and constituting aerobic-anoxic-anaerobism alternative environment by aerobic section filtration wall, anoxic section; Removing the organic while; Realize nitrated-denitrifying whole process denitrogenation, effectively improve the clearance of nitrogen.
5. surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus; It is characterized in that biological reinforced clean-up stage is filtered fills the wide aperture filtrate that is beneficial to plant-growth within the walls; Surface plantation plant; Mainly not removed as yet organism in removal leading portion aerobic section filtration wall, the water outlet of anoxic section filtration wall, and further absorbed nitrogen, phosphorus nutrition material play the effect of strengthened purification.
6. surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus is characterized in that the water outlet of biological reinforced purification filtering wall gets into the settling tank that catchments through permeable tracery wall, and the suspended matter post precipitation enters Hu Ku through the water outlet crest of weir.
7. surface water seedbed, rural area according to claim 1 ecological protection cascade filtration wall denitrification dephosphorization apparatus is characterized in that the later stage lower concentration runoff draining under the overflow condition in rainy season that is provided with of water overflow groove, alleviated multistage functional filtration wall hydraulic load.
8. rural area surface water seedbed ecological protection cascade filtration wall denitrification and dephosphorization method is characterized in that this method comprises the steps:
One, the mode fallen through oxygenation of sewage gets into distributing flue; Get into aerobic section through the permeable tracery wall of A and filter wall; Aerobic microbiological is removed organism and is accomplished nitrification, realizes the conversion of ammonia nitrogen to nitric nitrogen, and filtrate dams simultaneously and adsorbs phosphor contaminant matter; Aerobic section filters wall surface plantation well developed root system plant, through rhizome absorbed nitrogen, phosphorus nutrition material when cure by oxygen therapy filtrate inside;
Two, aerobic section filters the wall water outlet and filters wall through the long anoxic section of the permeable tracery wall entering of B flow process; Sewage forms anoxic-anaerobic environment gradually in the plug-flow process; The oxygen property denitrifying bacteria of holding concurrently is used to water middle and high concentration nitrification liquid and realizes denitrification denitrogenation, and the broken agricultural wastes of blended are that denitrification provides required carbon source in the filtrate of small-bore;
Three, the anoxic section is filtered the wall water outlet and is got into biological reinforced purification filtering wall through the permeable tracery wall of C, and through plant absorbing, filtrate is held back adsorption and further removed pollutent;
Four, the water outlet of biological reinforced purification filtering wall gets into the settling tank that catchments through the permeable tracery wall of D, and the suspended matter post precipitation enters Hu Ku through the water outlet crest of weir.
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| CN102515422B (en) * | 2011-12-02 | 2013-05-29 | 长沙理工大学 | Comprehensive treatment device for highway runoff pollution of water resource protection area |
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| CN103693740B (en) * | 2013-12-31 | 2016-07-06 | 沈阳化工研究院有限公司 | A kind of method of two sections of pulling flow type anaerobism-hold concurrently oxygen-aerobic reaction pond and process sewage thereof |
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| CN105060487A (en) * | 2015-08-27 | 2015-11-18 | 常州大学 | Rural domestic sewage treatment system |
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| CN107162197A (en) * | 2017-07-10 | 2017-09-15 | 北京科技大学 | Three rank O/A decentralized type sewages handle integrated apparatus and method |
| CN107381809A (en) * | 2017-08-03 | 2017-11-24 | 广东开源环境科技有限公司 | Improve the device and method thereof of multiple process aeration artificial swamp denitrogenation dephosphorizing efficiency |
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