CN103787504A - Artificial wet land biomass feeding channel device - Google Patents
Artificial wet land biomass feeding channel device Download PDFInfo
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- CN103787504A CN103787504A CN201410026483.2A CN201410026483A CN103787504A CN 103787504 A CN103787504 A CN 103787504A CN 201410026483 A CN201410026483 A CN 201410026483A CN 103787504 A CN103787504 A CN 103787504A
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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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Abstract
The invention relates to an artificial wet land biomass feeding channel device. A biomass feeding channel is divided into two regions; the front section is a biomass feeding region which comprises a biomass feeding area, a gravel layer and a grait layer in sequence from top to bottom; the rear section is a grait layer; the front section and the rear section are separated through a brick wall and a perforated tracery wall; the biomass feeding channel adopts U-shaped water distribution; sewage sequentially passes through the front section and the rear section of the biomass feeding channel and then finally enters an artificial wet land bed body. The biomass feeding channel can realize concentrated feeding of biomass, so that enough carbon sources can be supplied to the wet land, and the denitration efficiency of the wet land is improved. Aiming at the unavoidable problem of blocking in an artificial wet land biomass carbon source feeding process, the biomass feeding channel provided by the invention can enable the blocking to occur at a fixed point; during engineering running, the biomass feeding channel is regularly cleared, so that the wet land blocking problem can be effectively controlled; even if the biomass feeding channel is blocked, water flow can pass through the biomass feeding channel in an overflow manner and finally enter the artificial wet land, so that the normal running of the wet land is not affected.
Description
Technical field
The present invention relates to a kind of innovative artificial swamp biomass and add canal device, be applied to horizontal drowned flow artificial wet land front end wetland is carried out to pre-treatment, belong to constructed wetland waste water treatment technology field.
Background technology
Artificial swamp is as a kind of sewage disposal technology of natural, ecological, can utilize physics, chemistry, biological triple synergies to carry out advanced treatment to sewage, realizes the resource utilization of sewage and innoxious.Artificial swamp has good denitrification efficiency, the total nitrogen average removal rate of current wetland can reach 40%-55%, and there is the features such as less investment, running cost be low, easy to maintenance, therefore, artificial swamp is used as the advanced treatment of municipal sewage plant's secondary tail water more and more widely.
The main path that in drowned flow artificial wet land, nitrogen is removed is denitrification, and carbon resource shortage problem is the principal element of denitrification in restriction wetland, can pass through additional carbon: fructose, glucose, biomass, soil etc. improve denitrification.To after the harvesting of wetland plant dead leaf, be added in artificial swamp as biomass carbon source, can can utilize in a large number carbon source for denitrification provides, also resource utilization and the minimizing of wetland bio-waste have been realized simultaneously, in addition, it is low that the method also has running cost, is convenient to the advantages such as wetland plant management maintenance.In engineering application process, need to plant biomass be concentrated and be added, still need to make further research for addition method.
In the propagation and employment process of artificial swamp, blockage problem becomes the problem that people more and more pay close attention to, and is also the subject matter existing in wastewater treatment.In artificial swamp During Process of Long-term Operation, organic a large amount of accumulation can cause that a body blocks, and affect wetland operation usefulness and can reduce the wetland life-span, in addition, the desilting difficulty of large-sized artificial wetland is large, and expense is high, therefore, blockage problem more and more becomes the obstacle of artificial swamp application.Biomass carbon source directly add the obstruction that will accelerate wetland, affect wetland operation usefulness, strengthen the difficulty of wetland maintenance and management.
Therefore, need to additional biomass carbon source be concentrated and be added, and the sewage that enters wetland is carried out to effective pre-treatment, hold back particulate matter organic and inorganic in sewage, allow be blocked in setting regions occur, control Wetland clogging problem, facilitate the management maintenance of artificial swamp.
Summary of the invention
The object of the present invention is to provide a kind of novel artificial wetland biomass to add canal device, the concentrated particulate matter that adds, holds back in sewage that solves plant biomass realizes the pretreated problem of sewage, allow Wetland clogging occur in setting regions, control artificial swamp blockage problem, the operation usefulness that improves wetland, facilitates management and the maintenance of wetland.
The artificial swamp biomass that the present invention proposes add canal device, described device is between artificial swamp water-in and wetland bed body, and described device is divided into first area and second area, between two adjacent regions, cuts apart by partition wall, described partition wall bottom is perforation tracery wall, and top is brick wall; Described first area adds district, gravel bed and pebble bed for biomass from top to bottom, and described second area is pebble bed; Described first area one side is provided with reserving hole, and described reserving hole connects in water-in; In the time that biomass add canal device and normally move, sewage enters biomass from water-in by reserving hole and adds canal first area, add district through biomass and obtain sufficient carbon source, filter through gravel bed, pebble bed successively from top to bottom, see through again perforation tracery wall, the pebble bed that enters second area carries out final step filtration, and the sewage after filtration sees through perforation tracery wall and enters constructed wetland bed body; Current are " U " font and add canal by biomass, and hydraulic detention time increases, and sewage particulate matter rejection effect after bed filtration layer is remarkable.
In the present invention, it is 0.5 m that the biomass in first area add district's thickness, and gravel bed thickness is 0.15 m, and the grain size of gravel of employing is 5 ~ 8 mm, and pebble bed thickness is 0.15 m, and the cobble particle diameter of employing is 50 ~ 100 mm; Second area width is 0.25 m, and thickness is 0.8m, and the cobble particle diameter that pebble bed adopts is 50 ~ 100 mm.
The pre-treatment such as the wetland plant to autumn and winter harvesting cleans, dries, broken, again plant biomass is concentrated and is added to biomass and adds district, plant biomass can add in biomass the effects such as Qu Zhonghui is hydrolyzed, fermentation and acid, discharge the bioavailable organic carbon sources such as carbohydrate, protein, VFA, when sewage is after biomass add district, these bioavailable carbon sources are dissolved in rapidly in water, as wetland denitrifying carbon source, and macrobead biomass not soluble in water are trapped within and add in canal, can not cause the obstruction of wetland bed body.
In the time that biomass add canal and normally move, sewage enters biomass from water inlet pipe by reserving hole and adds canal first area, add district through biomass respectively from top to bottom and obtain sufficient carbon source, filter through small particle size gravel filling layer, pebble bed respectively, see through again perforation tracery wall, the pebble bed that enters second area carries out final step filtration, and the sewage after filtration sees through perforation tracery wall and enters constructed wetland bed body.Current are " U " font and add canal by biomass, and hydraulic detention time increases, and sewage particulate matter rejection effect after bed filtration layer is remarkable.At wetland run duration, can to biomass add canal carry out routine cleaning prevent stop up, it is simple in structure that these biomass add canal, volume is little, easy to clean, management with maintenance cost low.
Improper when running maintenance, first area is stopped up, and when current can not normally be presented " U " type and add canal by biomass, these biomass add canal and have certain regulatory function.First area current can enter from brick wall overflow the pebble bed of second area; after pebble bed filters, see through perforation tracery wall and enter wetland bed body; now; under current are, " U " type adds canal by biomass; can prevent that large particulate matter from directly entering wetland bed body, to wetland, good protection and shock absorption are played in normal operation.
Advantage of the present invention is as follows:
1. in artificial swamp, add biomass carbon source and can improve studies on denitrification of wetland, thereby effectively improve wetland denitrification efficiency.In addition, adding wetland plant biomass, to have cost of investment low, also can realize resource utilization and the minimizing of artificial swamp bio-waste simultaneously, optimized the maintenance and management of wetland.
2. add unavoidable blockage problem in process for artificial swamp biomass carbon source, the biomass that the present invention proposes add canal can allow obstruction fixed point occur.Between sewage inlet and wetland bed body, biomass are set and add canal, can biomass be concentrated and be added, avoid directly adding biomass carbon source and stopped up wetland bed body, graininess organism in simultaneously can effectively catching sewage, in engineering operation, only need add canal to these biomass carries out regular desilting, can effectively control Wetland clogging problem.
3. to add canal water distribution form ingenious for these biomass, strong to particulate matter interception capacity, and have certain regulatory function.This device has improved the interception capacity of packing layer to particulate matter by optimizing flow direction, stops up even if these biomass add canal, and current can add canal by biomass by overflow mode, finally enter artificial swamp, do not affect the normal operation of wetland.
4. to add canal simple in structure for these biomass, and volume is little, easy to clean, and management is low with maintenance cost, and suitability is strong, greatly facilitates the operation and maintenance of wetland, has very high engineering using value.
Accompanying drawing explanation
Fig. 1 is that biomass of the present invention add canal structural representation.
Fig. 2 is that embodiment 1 biomass add remittance application of installation in horizontal drowned flow artificial wet land structural diagrams.
In figure: 1, reserving hole, 2, biomass add district, 3, gravel bed, 4, pebble bed, 5, perforation tracery wall, 6, brick wall, 7, first area, 8, second area, 9, inlet channel, 10, biomass add canal, 11, artificial swamp.
Embodiment
Somewhere Hu Xi sewage work adopts horizontal drowned flow artificial wet land Ecological Disposal technology to carry out advanced treatment to tail water, adopts altogether 2 groups of horizontal drowned flow artificial wet lands, parallel running.The size of horizontal drowned flow artificial wet land is respectively 124 × 46 m(total area approximately 5700 m
2), 124 × 60 m(total area approximately 7400 m
2).These two groups of artificial swamp leading portions all arrange biomass and add canal (as shown in Figure 1), and the size that biomass add canal is respectively 46 × 1.97 m, 60 × 1.97 m, and biomass add canal and are divided into 2 regions, and leading portion is numbered first area, and back segment is numbered second area.First area width is 1 m, and it is 0.8 m that matrix is filled total height, from top to bottom for biomass add district (thickness be 0.5 m), gravel bed (5 ~ 8 mm, 0.15 m), (50 ~ 100 mm, 0.15 m) for pebble bed.Second area width is 0.25 m, and hypothallus is that (50 ~ 100 mm, 0.8 m) for pebble bed.First area and second area adopt brick wall and perforation tracery wall to separate, and bottom is the perforation tracery wall that 0.2 m is high, and top is the brick wall of 1.1 m.
The western sewage treatment plant tail water in lake, somewhere enters biomass by reserving hole and adds canal, and water inlet current will add district 2, gravel bed 3, pebble bed 4 by leading portion biomass one by one, then enters back segment pebble bed 4 through perforation tracery wall 5, finally enters wetland bed body.In drowned flow artificial wet land operational process, gather in autumn and winter to wetland plant, wetland plant is dried, after the pre-treatment such as broken, joins at regular time and quantity biomass and add district, utilize waterplant biomass ferment to produce acid and supplement the required carbon source of drowned flow artificial wet land denitrification, simultaneously, every half a year, biomass are added to canal and clean, biomass are added to filler in canal and dig out, water is inserted wetland after cleaning again, 1 day consuming time, maintenance and management was simple.Commencement of commercial operation is so far at the beginning of 2011 for this artificial swamp, stable effluent quality, the pollutant removal such as N, P usefulness is higher, under the operating mode of HRT=2 d, wetland water inlet is that sewage treatment plant tail water water quality is the one-level B standard of GB18918-2002 regulation, and wetland effluent water quality is COD < 20 mg/L, ammonia nitrogen < 1 mg/L, total nitrogen is 3 ~ 5 mg/L, and total phosphorus is 0.1 ~ 0.2 mg/L; The water outlet water yield is stable, and hydraulics is good, never occurs Wetland clogging problem.
Claims (2)
1. artificial swamp biomass add canal device, it is characterized in that: described device is between artificial swamp water-in and wetland bed body, described device is divided into first area and second area, between two adjacent regions, cut apart by partition wall, described partition wall bottom is perforation tracery wall, and top is brick wall; Described first area adds district, gravel bed and pebble bed for biomass from top to bottom, and described second area is pebble bed; Described first area one side is provided with reserving hole, and described reserving hole connects in water-in; In the time that biomass add canal device and normally move, sewage enters biomass from water-in by reserving hole and adds canal first area, add district through biomass and obtain sufficient carbon source, filter through gravel bed, pebble bed successively from top to bottom, see through again perforation tracery wall, the pebble bed that enters second area carries out final step filtration, and the sewage after filtration sees through perforation tracery wall and enters constructed wetland bed body; Current are " U " font and add canal by biomass, and hydraulic detention time increases, and sewage particulate matter rejection effect after bed filtration layer is remarkable.
2. a kind of artificial swamp biomass according to claim 1 add canal device, it is characterized in that: it is 0.5 m that the biomass in first area add district's thickness, gravel bed thickness is 0.15 m, the grain size of gravel adopting is 5 ~ 8 mm, pebble bed thickness is 0.15 m, and the cobble particle diameter of employing is 50 ~ 100 mm; Second area width is 0.25 m, and thickness is 0.8m, and the cobble particle diameter that pebble bed adopts is 50 ~ 100 mm.
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| CN201410026483.2A CN103787504A (en) | 2014-01-21 | 2014-01-21 | Artificial wet land biomass feeding channel device |
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| CN201410026483.2A CN103787504A (en) | 2014-01-21 | 2014-01-21 | Artificial wet land biomass feeding channel device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012228A (en) * | 2020-08-11 | 2020-12-01 | 北京翔鲲水务建设有限公司 | Rapid construction method for filling filter material in constructed wetland unit tank |
| CN113754062A (en) * | 2021-08-20 | 2021-12-07 | 中国电建集团华东勘测设计研究院有限公司 | Biomass subsurface flow constructed wetland and application thereof in sewage treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525184A (en) * | 2009-04-22 | 2009-09-09 | 河海大学 | Method for complementing organic carbon sources to artificial wetland |
| CN201626866U (en) * | 2010-01-13 | 2010-11-10 | 广西大学 | Water distribution device of horizontal subsurface wetland sewage treatment system |
| CN201850198U (en) * | 2010-10-21 | 2011-06-01 | 深圳市立雅水务发展有限公司 | Efficient denitrifying wetland system for advanced treatment of tail water of sewerage treatment plant |
| CN102923861A (en) * | 2012-11-30 | 2013-02-13 | 南京大学 | Constructed wetland for treating sewage with low carbon nitrogen ratio by utilizing ores |
-
2014
- 2014-01-21 CN CN201410026483.2A patent/CN103787504A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525184A (en) * | 2009-04-22 | 2009-09-09 | 河海大学 | Method for complementing organic carbon sources to artificial wetland |
| CN201626866U (en) * | 2010-01-13 | 2010-11-10 | 广西大学 | Water distribution device of horizontal subsurface wetland sewage treatment system |
| CN201850198U (en) * | 2010-10-21 | 2011-06-01 | 深圳市立雅水务发展有限公司 | Efficient denitrifying wetland system for advanced treatment of tail water of sewerage treatment plant |
| CN102923861A (en) * | 2012-11-30 | 2013-02-13 | 南京大学 | Constructed wetland for treating sewage with low carbon nitrogen ratio by utilizing ores |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012228A (en) * | 2020-08-11 | 2020-12-01 | 北京翔鲲水务建设有限公司 | Rapid construction method for filling filter material in constructed wetland unit tank |
| CN113754062A (en) * | 2021-08-20 | 2021-12-07 | 中国电建集团华东勘测设计研究院有限公司 | Biomass subsurface flow constructed wetland and application thereof in sewage treatment |
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Application publication date: 20140514 |