CN102583750A - Automatic oxygen increasing type constructed wetland device adopting hollow bricks - Google Patents
Automatic oxygen increasing type constructed wetland device adopting hollow bricks Download PDFInfo
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- CN102583750A CN102583750A CN2012100098848A CN201210009884A CN102583750A CN 102583750 A CN102583750 A CN 102583750A CN 2012100098848 A CN2012100098848 A CN 2012100098848A CN 201210009884 A CN201210009884 A CN 201210009884A CN 102583750 A CN102583750 A CN 102583750A
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- wetland
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- hollow bricks
- hollow brick
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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 provides an automatic oxygen increasing type constructed wetland device adopting hollow bricks, and relates to a constructed wetland system device used for treating wastewater. The automatic oxygen increasing type constructed wetland device comprises a water distributing pipe, wetland filling substrates (sandy soil, furnace slag and gravel), the shale hollow bricks, a water collecting tank and a water outlet, wherein the shale hollow bricks in the wetland system are placed transversely; no bonding substance is filled between the hollow bricks; and the hollow brick layer is gradually concave downwards at an angle of 20 DEG to 30 DEG, so that the wastewater infiltrates downwards and cannot fill the hollow bricks to reduce the oxygen supply capability. The hollow bricks on the two sides of the wetland are communicated with atmosphere, so that oxygen can be supplied conveniently and automatically; and meanwhile, the particle sizes and the filling thicknesses of the filling substrates are also screened to find out the best particle sizes and the best filling thicknesses of the substrates, so that the adsorption ability of the wetland on phosphorus in the wastewater is improved and the purification ability of the wetland system is enhanced. In summary, the automatic oxygen increasing type constructed wetland device has a simple and reasonable structure and achieves an ideal effect on eutrophic water body treatment.
Description
Technical field
The present invention relates to a kind of constructed wetland device that is used for WWT, particularly a kind of wetland purification device that is used to handle eutrophication sewage.
Background technology
Artificial swamp is a kind of novel wastewater processing technology, be build by artificial optimization's simulated wetland system have a comprehensive degradation function of the ecosystem, and the artificial treatment system of supervision and control.It is for giving full play to the wastewater treatment function of Wetlands ecosystems, improves wastewater purifying efficiency and constructs, and its sewage purification function is that natural wet land system is incomparable.It is keeping the eubiosis, and there is its original effect protection species diversity aspect.It has overcome uses chemical process to be prone to the shortcoming that causes secondary pollution and physical method to cure the symptoms, not the disease in WWT, has advantages such as investment is little, treatment effect good, running maintenance is convenient.But in research and engineering practice in recent years, the defective of artificial swamp technology also displays gradually: wet land system is prone to stop up, and causes system's anoxic and reduces treatment effect.Correlation analysis shows that the not enough anaerobic environment that forms of wet land system interal supplying oxygen is the major cause under the artificial swamp detergent power.Therefore, improve the denitrogenation dephosphorizing effect of wetland, key is to improve the oxygen environment of wetland, increases dissolved oxygen content, thereby improves the detergent power of wet land system.Though the artificial-strengthening aeration can significantly improve the inner dissolved oxygen content of wet land system, strengthen the detergent power of wet land system, the wet land system relative complex, and need energy consumption, thus improved cost for wastewater treatment.
Summary of the invention
The purpose of the present invention's invention is to provide a kind of automatic aeration type constructed wetland device that is used for WWT.
Goal of the invention of the present invention realizes through following technical measures:
A kind of constructed wetland device that is used for WWT; Comprise water-in, constructed wetland bed body, water leg and water outlet; Said constructed wetland bed body characteristics is: wetland bed body inside is made up of wetland filling substrate and shale hollow brick; One water leg is arranged at the wet land system bottom, collects the waste water after wet land system is handled.
In order to strengthen wet land system interal supplying oxygen ability, thereby improve the organic decontamination effect improving of eutrophication water, so, wet land system inside is supported automatically through the hole of shale hollow brick at the inner filling of wet land system shale hollow brick.
In order further to improve the detergent power of wet land system of the present invention, above-mentioned wet land system filling substrate particle diameter and filling thickness all carried out artificial screening.The matrix of filling comprises three kinds of sandy soil, slag and gravels.Slag particle diameter 3～20 mm, preferred 1-10mm; Gravel particle diameter 5～35mm, preferred 10-20mm.Gravel filling thickness 50～250mm, preferred 150mm; Slag filling thickness 150～300mm, preferred 200mm; Gravel filling thickness 50～250mm, preferred 150mm.
In order further to improve the detergent power of wet land system of the present invention, this wetland water purification mode adopts intermittent loading, utilizes the period of not water inlet further to replenish the inner oxygen level of wet land system, thereby improves the inner oxygen delivery capacity automatically of wet land system.
The invention has the beneficial effects as follows:
Owing to filled the shale hollow brick in wet land system inside, increased the inner oxygen delivery capacity of wet land system, improved oxygen in water concentration, strengthened the detergent power of wet land system.Show through experimental result, the wet land system detergent power of adding the shale hollow brick than the wet land system total nitrogen of not filling hollow brick improved 12.6～18.9%, total phosphorus improved 6.6%～9.2%.
Because the particle diameter and the filling thickness of these practical artificial wet land system filling substrate sandy soil, slag and gravel all screen, and have realized the optimum combination of matrix particle diameter and filling thickness, improve the detergent power of wet land system.
The artificial wet land system apparatus structure of the present invention is simple, be provided with rationally, need not to realize automatic oxygen supply, ideal treatment effect under the situation of energy consumption.
Description of drawings
Fig. 1 is the used shale hollow brick of the artificial wetland device of the present invention.
Fig. 2 is the side schematic view of the artificial wetland device of the present invention.
Fig. 3 is the schematic perspective view of the artificial wetland device of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is described further, but therefore the present invention is not limited among the following concrete mode.
A kind of constructed wetland device that is used for WWT, wet land system are of a size of 200cm * 90cm * 75cm (L * W * H); Comprise and be arranged on the vertical water distributor of wet land system 1, wetland filling substrate 2 (sandy soil), shale hollow brick (3), wetland filling substrate 4 (slag), wetland filling substrate 5 (gravel), water leg 6 and water outlet 7; Shale hollow brick traverse in the said wet land system; Do not add any sticky object between the hollow brick; The hollow brick layer is gradually to recessed 20 °---and 30 ° (as shown in Figure 2), waste water is therefrom oozed down, thus unlikely with being full of the reduction oxygen delivery capacity in the hollow brick.Wetland both sides hollow brick and atmosphere are convenient to automatic oxygen supply, and be as shown in Figure 3.Under state of nature, the Siberian iris that collects is directly planted in the topsoil of wetland, stablized 14 days with tap water.After treating that plant is stable, handle from the water distributor water inlet.
According to the measuring result, the optimal water power standing time that the Siberian iris artificial wet land system is handled livestock breeding wastewater is 6d, and best flooding quantity calculates by following formula:
Q=Fqt/0.0365
In the formula:
Q---waste water design discharge, m
3/ d;
The land area that F---artificial swamp takies, hm
2
Q---hydraulic load, mm/d, q gets 100mm/d in this test
T---waterpower working time, d.
0.0365---reduction factor.
Through calculating, the best flooding quantity of this system is 2.9m
3So the water inlet flow velocity is for being 0.33cm
3/ s.For further improving the automatic keeping ability of wet land system, adopt the intermittent loading mode in the test.8 water inlets in system's morning, each water inlet stops into water 1d then for 6d.Be to be 1d in the each run cycle, wherein the residence time of sewage in reactor drum is 6d, draining behind the 6d, and ensuing 1d reactor drum gets into and stops the not stage.
The artificial wet land system of above-mentioned structure is to the ideal purification effect of total nitrogen total phosphorus in the waste water of livestock poultry; Nitrogen removal rate in the eutrophic wastewater is reached 79-89%; Total tp removal rate reaches 81-88%, its detergent power than the wet land system total nitrogen of not filling hollow brick improved 12.6～18.9%, total phosphorus improved 6.6%～9.2%.
Claims (6)
1. constructed wetland device that is used for WWT; Comprise water distributor (2), filling substrate (3,4,5), shale hollow brick (6), water leg (7), water outlet (8); Shale hollow brick traverse in the said wet land system does not add any sticky object between the hollow brick, the hollow brick layer is gradually to recessed 20 °-30 ° (as shown in Figure 3); Waste water is therefrom oozed down, thus unlikely with being full of the reduction oxygen delivery capacity in the hollow brick.
2. said artificial wet land system both sides hollow brick and atmosphere are convenient to automatic oxygen supply.
3. device as claimed in claim 1 is characterized in that: institute's filling substrate particle diameter and filling thickness are all through screening, slag particle diameter 3～20 mm, preferred 1-10mm; Gravel particle diameter 5～35mm, preferred 10-20mm.
4. gravel filling thickness 50～250mm, preferred 150mm; Slag filling thickness 150～300mm, preferred 200mm; Gravel filling thickness 50～250mm, preferred 150mm.
5. device as claimed in claim 1 is characterized in that adopting intermittent loading.
6. each flooding time is 6d, stops not 1d then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100098848A CN102583750A (en) | 2012-01-12 | 2012-01-12 | Automatic oxygen increasing type constructed wetland device adopting hollow bricks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100098848A CN102583750A (en) | 2012-01-12 | 2012-01-12 | Automatic oxygen increasing type constructed wetland device adopting hollow bricks |
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| CN102583750A true CN102583750A (en) | 2012-07-18 |
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| CN2012100098848A Pending CN102583750A (en) | 2012-01-12 | 2012-01-12 | Automatic oxygen increasing type constructed wetland device adopting hollow bricks |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326569A (en) * | 2014-11-11 | 2015-02-04 | 重庆文理学院 | Application of anoectochilus formosanus in treating rural combined domestic sewage |
| CN104787963A (en) * | 2015-03-30 | 2015-07-22 | 浙江省环境保护科学设计研究院 | Self-oxygenation biological filter bed for sewage treatment |
| CN105858907A (en) * | 2016-06-27 | 2016-08-17 | 汪浩 | Constructed wetland and method for treating domestic sewage |
| CN105984954A (en) * | 2016-01-22 | 2016-10-05 | 安徽建筑大学 | Method for purifying wastewater by constructed wetland comprising microbial carrier |
-
2012
- 2012-01-12 CN CN2012100098848A patent/CN102583750A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326569A (en) * | 2014-11-11 | 2015-02-04 | 重庆文理学院 | Application of anoectochilus formosanus in treating rural combined domestic sewage |
| CN104326569B (en) * | 2014-11-11 | 2016-08-17 | 重庆文理学院 | Herba Anoectochili roxburghii application in processing rural area combined system sanitary sewage |
| CN104787963A (en) * | 2015-03-30 | 2015-07-22 | 浙江省环境保护科学设计研究院 | Self-oxygenation biological filter bed for sewage treatment |
| CN105984954A (en) * | 2016-01-22 | 2016-10-05 | 安徽建筑大学 | Method for purifying wastewater by constructed wetland comprising microbial carrier |
| CN105858907A (en) * | 2016-06-27 | 2016-08-17 | 汪浩 | Constructed wetland and method for treating domestic sewage |
| CN105858907B (en) * | 2016-06-27 | 2018-08-24 | 贵州一道环境建设有限公司 | A kind of artificial swamp and processing method of processing family domestic sewage |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |