CN101723547A - Anti-blocking method for artificial wetland - Google Patents
Anti-blocking method for artificial wetland Download PDFInfo
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- CN101723547A CN101723547A CN200910199880A CN200910199880A CN101723547A CN 101723547 A CN101723547 A CN 101723547A CN 200910199880 A CN200910199880 A CN 200910199880A CN 200910199880 A CN200910199880 A CN 200910199880A CN 101723547 A CN101723547 A CN 101723547A
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- wetland
- diafiltration
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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
Abstract
The invention belongs to the technical field of water treatment, and particularly discloses an anti-blocking method for an artificial wetland. The method is mainly to arrange a percolation dam A unit in front of a wetland system B unit, wherein the inside of the percolation dam A unit is provided with a filtering flashboard (1) made of textile material, a bio-packing filtration layer (2), an anti-permeability bottom (4) and a covering layer (3); and the wetland system B unit can be one or the series connection or the parallel connection of more of three wetlands such as a surface flow wetland, a subsurface flow wetland, a vertical flow wetland and the like. The treatment flow is that sewage is treated by the percolation dam A unit first, and then an effluent enters the wetland system B unit for further treatment. Compared with a conventional method, the method can conveniently solve the problem of easy blocking during the operation of wetland systems.
Description
Technical field
The invention belongs to water-treatment technology field, relate to method and apparatus, particularly artificial marsh sewage treating method that a kind of sewage disposal or purification of water quality are handled.
Background technology
Existing artificial swamp mainly contains three kinds of modes such as surface current, undercurrent and vertical current, and in actual engineering, after operation for some time, all there is easy blocking problem in above-mentioned wetland.By the microbial growth curve as can be known, the specific growth rate of microorganism and the specific consumption rate of substrate are closely bound up, and at the feed-water end of the very abundant wetland of nutrition, the microorganism that grows on the filler is because substrate is very abundant, the speed of growth is very fast, easily causes the feed-water end of wetland to stop up.Wet land treating system influences the effluent quality of system, thereby solves the blockage problem of wetland in case obstruction can cause problems such as inhomogeneous, the short stream of water distribution, is the difficult problem that each wet land system all will face.
At present, the method for solution mainly contains intermittent loading, and the grating that perhaps changes filtrate solves this problem.There is the discontinuous problem of water inlet in intermittent loading, has been subjected to certain restriction in the use; Also just delay a kind of means that filtrate blocks and change the filtrate grating, can not fundamentally solve the blockage problem of filtrate, after for some time operation, filtrate still needs the excavation flushing, in the technology that has, has therefore adopted the back flushing facility, make that the cost of system is higher, the operational management complexity.
Summary of the invention
The object of the present invention is to provide a kind of water treatment of artificial swamp efficiently anti-blockage method, to solve a susceptible to plugging difficult problem in traditional wet land system operational process.
The artificial swamp sewage disposal anti-blockage method that the present invention proposes, be that A unit, a diafiltration dam was set before wet land system B unit, be provided with filtration plate 1, biologic packing material filtering layer 2, the impervious end 4, tectum 3 that textile materials is made in the A unit, diafiltration dam, described biologic packing material filtering layer 2 is positioned at after the screen plate 1, the impervious end 4 and tectum 3 are separately positioned on the bottom and the top of biologic packing material filtering layer 2, form a diafiltration module; Artificial wet land system B unit can be one or more serial or parallel connections in three kinds of wetlands such as surface current, undercurrent and vertical current.Its treatment scheme is that after sewage at first passed through diafiltration dam A cell processing, water outlet entered wet land system B unit and carries out step processing again.
The A unit, diafiltration dam that proposes among the present invention is a kind of rapid infiltration system, and it can effectively tackle pollutent in the water body, and regulates water flow velocity, equilibrium water elevation.A unit inlet section is provided with the filtration plate 1 that textile materials is made on the diafiltration dam, and it is netted that its structure is the space, plays the effect of stopping the macrobead suspended substance of filtering in system; In the back of filtering plate 1 is biologic packing material filtering layer 2, its filler is one or more combinations in the soft-filler made of polypropylene pellets, macrobead coarse sand, haydite, pebbles, wetting ability textile fibres Ball-type packing, wetting ability textile fibres, and above-mentioned filler has excellent biological attachment characteristic; When biodegradable organism is arranged in coming water, surface growth at biologic packing material has a large amount of microbial bacteria micelles, to coming the organism in the water to play the absorption interception, because of coming to have in the water certain dissolved oxygen to retain, thereby aerobic, anaerobic reaction takes place in biologic packing material filtering layer 2, with organic matter degradation.As required, bed filtration plate 1 and biologic packing material filtering layer 2 can be set in water treatment system.Be that A unit, diafiltration dam can have a plurality of diafiltration module.Generally can select 1～18 diafiltration module for use.When filtering plate 1 and stop up because suspended substance is more, can extract filtering plate 1, through after the water flushing again row put into system, to play the purpose of protecting subsequent treatment process.Because water inlet place organic concentration is in the abundantest front end of substrate in the entire treatment system, thereby the microorganism growth speed of growth is very fast on the biologic packing material filtering layer 2, easily causes the feed-water end of wetland to stop up.At this moment, the filler in the biologic packing material filtering layer 2 can be taken out, can remove microorganism excessive in the filler through simple water flushing, row is put into treatment system and is reused again.
A unit in the system, according to on-the-spot needs on the spot, the residence time of sewage can be set to 0.2～6 hour, and preferred 1～6 hour, the height on diafiltration dam was between 0.5～1.8m height.Through the tail water behind the A unit, diafiltration dam, enter wet land system B and further remove organic pollutant in the water, the residence time can be set to 1～72 hour, and preferred 5～72 hours, the height of wet land system was between 0.6～1.5m height.Thereby reach the purpose that the protection wet land system does not block.
The wet land system B unit that proposes among the present invention is in three kinds of wetlands such as surface current, undercurrent and vertical current one or more, and operation scheme can be a serial or parallel connection.Through the water that comes after the A cell processing, its concentration of suspension and BOD concentration are all lower, after wet land system B cell processing, can satisfy different discharging needs.
Description of drawings
Fig. 1 is a wetland purification process motion pattern in this technology.
Number in the figure: A is the diafiltration dam, and B is a wet land system.The 1st, filter plate, the 2nd, biologic packing material filtering layer, the 3rd, tectum, the 4th, the impervious end, the 5th, plant, the 6th, wet land filler.
Embodiment
Certain sanitary sewage plant effluent, COD concentration is about about 50 ~ 80mg/L, ammonia nitrogen is 2.0 ~ 5.0mg/L, total phosphorus is 0.5mg/L, total nitrogen is 10 ~ 15mg/L, enter drinking water source ground through after this art breading, the height on diafiltration dam is 1.0m, hydraulic detention time is 6 hours, the height of wet land system is 0.6m, and hydraulic surface loading is 0.3m3/m2.d.Water outlet reaches " water environment quality standard " (GB3838-2002) IV class water quality standard, water outlet COD less than 30mg/L about, ammonia nitrogen≤1.50mg/L, total phosphorus≤0.3mg/L and total nitrogen≤1.5mg/L.
Certain industrial sewage plant effluent, COD concentration is about about 100mg/L, ammonia nitrogen is 10.0mg/L, total nitrogen is 15mg/L, total phosphorus is 3mg/L, concentration of suspension is 80mg/L, enter this art breading, the height on diafiltration dam is 1.0m, hydraulic detention time is 4 hours, and the height of wet land system is 0.6m, and hydraulic surface loading is 0.3m3/m2.d.Water outlet reaches one-level B standard among the GB18918-2002.
Claims (4)
1. anti-blocking method for artificial wetland is characterized in that:
A unit, a diafiltration dam was set before artificial swamp B unit, this A unit, diafiltration dam comprises filtration plate (1), biologic packing material filtering layer (2), the impervious end (4), the tectum (3) that textile materials is made, described biologic packing material filtering layer (2) is positioned at screen plate (1) afterwards, the impervious end (4) and tectum (3) are separately positioned on the bottom and the top of biologic packing material filtering layer (2), form a diafiltration module; Wet land system B unit is one or more serial or parallel connections in three kinds of wetlands such as surface current, undercurrent and vertical current; Its treatment scheme is that after sewage at first passed through diafiltration dam A cell processing, water outlet entered wet land system B unit and carries out step processing again; Wherein, to be the space netted for the structure of described filtration plate (1); Filler in the biologic packing material filtering layer (2) is one or more combinations in the soft-filler made of polypropylene pellets, macrobead coarse sand, haydite, pebbles, wetting ability textile fibres Ball-type packing, wetting ability textile fibres.
2. anti-blocking method for artificial wetland as claimed in claim 1 is characterized in that A unit, described diafiltration dam is made up of several diafiltration module.
3. anti-blocking method for artificial wetland as claimed in claim 1 is characterized in that: hydraulic detention time is 0.2～6 hour in the A unit, described diafiltration dam, and the height on diafiltration dam is 0.5～1.8m.
4. anti-blocking method for artificial wetland as claimed in claim 1 is characterized in that: the time that stops artificial swamp B unit from the effusive water in A unit, diafiltration dam is 1～72 hour; The height of artificial swamp is 0.6～1.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101998809A CN101723547B (en) | 2009-12-03 | 2009-12-03 | Anti-blocking method for artificial wetland |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101998809A CN101723547B (en) | 2009-12-03 | 2009-12-03 | Anti-blocking method for artificial wetland |
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| Publication Number | Publication Date |
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| CN101723547A true CN101723547A (en) | 2010-06-09 |
| CN101723547B CN101723547B (en) | 2012-12-05 |
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| CN2009101998809A Expired - Fee Related CN101723547B (en) | 2009-12-03 | 2009-12-03 | Anti-blocking method for artificial wetland |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398991A (en) * | 2010-09-16 | 2012-04-04 | 天津城市建设学院 | Undercurrent type garden filter tank sewage treatment system |
| CN102674624A (en) * | 2011-12-17 | 2012-09-19 | 河南科技大学 | Front processing system of landscape water system |
| CN102951739A (en) * | 2012-12-18 | 2013-03-06 | 大千生态景观股份有限公司 | Multisection combined type artificial wetland purifying system |
| CN110627244A (en) * | 2019-10-14 | 2019-12-31 | 浙江省淡水水产研究所 | Gabion net mechanism suitable for pond culture tail water treatment and use method |
| CN110713259A (en) * | 2019-10-09 | 2020-01-21 | 湖南润万环保科技有限公司 | Method for repairing blocked subsurface flow constructed wetland |
| CN111573979A (en) * | 2020-05-22 | 2020-08-25 | 金文贤 | Sewage treatment and recycling method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201254511Y (en) * | 2008-06-20 | 2009-06-10 | 天津科技大学 | Rainwater purification apparatus |
| CN101456652B (en) * | 2009-01-05 | 2011-12-07 | 北京大学 | Device of depth denitrogen and phosphorus removal composite processing system by micro-power and method thereof |
-
2009
- 2009-12-03 CN CN2009101998809A patent/CN101723547B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398991A (en) * | 2010-09-16 | 2012-04-04 | 天津城市建设学院 | Undercurrent type garden filter tank sewage treatment system |
| CN102674624A (en) * | 2011-12-17 | 2012-09-19 | 河南科技大学 | Front processing system of landscape water system |
| CN102674624B (en) * | 2011-12-17 | 2013-07-17 | 河南科技大学 | Front processing system of landscape water system |
| CN102951739A (en) * | 2012-12-18 | 2013-03-06 | 大千生态景观股份有限公司 | Multisection combined type artificial wetland purifying system |
| CN110713259A (en) * | 2019-10-09 | 2020-01-21 | 湖南润万环保科技有限公司 | Method for repairing blocked subsurface flow constructed wetland |
| CN110713259B (en) * | 2019-10-09 | 2022-03-11 | 湖南润万环保科技有限公司 | Method for repairing blocked subsurface flow constructed wetland |
| CN110627244A (en) * | 2019-10-14 | 2019-12-31 | 浙江省淡水水产研究所 | Gabion net mechanism suitable for pond culture tail water treatment and use method |
| CN111573979A (en) * | 2020-05-22 | 2020-08-25 | 金文贤 | Sewage treatment and recycling method |
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| CN101723547B (en) | 2012-12-05 |
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