CN102583886A - Artificial wetland for treating sewage - Google Patents
Artificial wetland for treating sewage Download PDFInfo
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- CN102583886A CN102583886A CN2012100400005A CN201210040000A CN102583886A CN 102583886 A CN102583886 A CN 102583886A CN 2012100400005 A CN2012100400005 A CN 2012100400005A CN 201210040000 A CN201210040000 A CN 201210040000A CN 102583886 A CN102583886 A CN 102583886A
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- artificial swamp
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Abstract
The invention discloses an artificial wetland for treating sewage. The artificial wetland for treating the sewage is sequentially composed of a supporting layer, a primary adsorption layer, a purifying layer and a plant layer from bottom to top, wherein the primary adsorption layer is composed of at least one of zeolite and coal cinder; the purifying layer is composed of fermented sludge, sand and limestone; and the plant layer is composed of emergent aquatic plants capable of enriching heavy metal. The artificial wetland disclosed by the invention has the advantages: 1, the absorption capability of a matrix is strong, the microbe variety is diverse and the decomposition efficiency is high; compared with the traditional wetland system, the artificial wetland has better sewage treatment and purification effects and the water quality of output water is good; 2, the matrix contains more organic matter components, and comprehensive nutrition components such as nitrogen, phosphorus, potassium and metal salt ions, which are essential to the growth of organisms, thereby being good for growth and propagation of plants and microbes; and plants and microbes are the key components of a wetland system; and 3, the wastes are reutilized and a lot of sludge is prepared into the matrix to be applied to the wetland system, so that the wetland system can be filled with the matrix and city sludge which is waste is effectively utilized.
Description
Technical field
The present invention relates to a kind of artificial swamp that is used to dispose of sewage.
Background technology
Artificial wet land system is a kind of waste water advanced New Process for Treatment that is applicable to the trade effluent and the sewage in multiple source.This type systematic has the hydraulic load height, and purification function is strong, moves more stablely all the year round, and it is lower and combine with landscape construction to build running expense, purifies the advantage of beautifying the environment, and has broad application prospects.
Utilize artificial wet land system to carry out waste water advanced processing; Compare with physics, chemistry, materialization and the biochemical method treatment process of routine; Its special advantages is arranged: the running cost that artificial swamp is disposed of sewage is very cheap, only needs to consume small amount of electrical energy usually and is used for improving the water inlet water level; Because artificial swamp does not need electromechanical equipment basically, therefore be easy to maintenance management, also avoided the investment construction expense of great number simultaneously.In addition, wetland plant can also be as industrial auxiliary material and daily necessities by resource utilization, thereby produces certain economic benefits.The what is more important water pollutant can effectively reduce carbon emission after this handles, for the containment global warming is made contributions.
Artificial swamp is applied to the advanced treatment of secondary effluent, and Tailwater Depth is handled and seemed particularly important.Tail water after advanced treatment reaches a higher water quality standard to be suitable for discharging, to irrigate or other reuse approach.The artificial swamp technology can effectively be removed nutritive salt and have the virus killing effect, and the sewage that comes out from wetland can be used for irrigating cereal, recreation ground, park or golf field and enter the river mouth and the river.Simultaneously, artificial swamp can provide the plant-animal habitat, and water outlet also can be used to repair natural wetland.
Because many-sided advantages such as environment, economy and landscape effect of wet land system, artificial wet land system more and more comes into one's own in more country.
Summary of the invention
An object of the present invention is to provide a kind of artificial swamp that is used to dispose of sewage.
The artificial swamp that is used to dispose of sewage provided by the present invention is followed successively by supporting layer, elementary adsorption layer, purifying layer and vegetable layer from the bottom to top;
Said elementary adsorption layer is at least a in zeolite and the cinder;
Said purifying layer is made up of fermented sludge, sand and Wingdale;
Said vegetable layer is the emergent of ability enriching heavy metal;
In the above-mentioned artificial swamp, the thickness of said supporting layer, elementary adsorption layer, purifying layer is respectively 0.3m, 0.1m, 1.0m.
In the above-mentioned artificial swamp, said elementary adsorption layer is made up of zeolite and cinder, and the volume ratio of zeolite and cinder is 1: 1;
In the above-mentioned artificial swamp, in the said purifying layer, the volume ratio of fermented sludge, sand and Wingdale is 6: 3: 1;
In the above-mentioned artificial swamp, the emergent of said ability enriching heavy metal is reed, cattail or Rush.
In the above-mentioned artificial swamp, the particle diameter of said zeolite and said cinder is 5-10mm;
In the above-mentioned artificial swamp, the particle diameter of said sand and said Wingdale is all less than 5mm.
In the above-mentioned artificial swamp, said supporting layer is at least a in cobble and the queen closer.
In the above-mentioned artificial swamp, said supporting layer is made up of cobble and queen closer, and the volume ratio of cobble and queen closer is 1: 1.
In the above-mentioned artificial swamp, the particle diameter of said cobble and queen closer is 20-50mm.
In the above-mentioned artificial swamp, said fermented sludge can be carries out the product behind the aerobic fermentation with mud.
In the above-mentioned artificial swamp; Said fermented sludge can be the fermented sludge that satisfies following condition: organism quality percentage composition >=10% in the fermented sludge; Water cut in the fermented sludge＜40%, the quality percentage composition of nitrogen phosphorus potassium satisfies following condition in the fermented sludge: [N+P2O5+K2O] >=1%.
In the above-mentioned artificial swamp, mud can be the waste that urban wastewater treatment firm produces in the sewage purification treating processes, generally is the solid precipitation thing that in the process of disposing of sewage, produces, like heavy mud and residual active sludge.
The application of above-mentioned artificial swamp in purifying waste water also belongs to the application and requires the scope protected.
In the above-mentioned application, said sewage can be any sewage.
The application's artificial swamp has following advantage: 1, matrix high adsorption capacity, and microbe species is various, and decomposition efficiency is high, with traditional wetland systematic comparison, has better WWT and decontamination effect improving, and effluent quality is good; 2, contain more organic composition in this matrix, and the necessary nutritive ingredients of biological growth such as comprehensive nitrogen phosphorus potassium and ionizable metal salt, more help plant and microbial growth and breeding, and plant and mikrobe are the key components in the wet land system; 3, realize refuse reclamation, a large amount of mud have been made into matrix, are applied in the wet land system, having solved the wet land system filling substrate simultaneously, this waste material of municipal sludge are utilized effectively.
Embodiment
Employed experimental technique is ordinary method like no specified otherwise among the following embodiment.
Used material, reagent etc. like no specified otherwise, all can obtain from commercial sources among the following embodiment.
The composition of embodiment 1, the artificial swamp of disposing of sewage
The artificial swamp that is used to dispose of sewage is followed successively by supporting layer, elementary adsorption layer, purifying layer and vegetable layer from the bottom to top;
Supporting layer: be made up of cobble and queen closer, volume ratio is 1: 1, mixes; The particle diameter of cobble and queen closer is 20-50mm.These two kinds of materials are laid on the structures bottom, play a supportive role.
Elementary adsorption layer: be made up of zeolite and cinder, volume ratio is 1: 1, mixes; The particle diameter of zeolite and cinder is 5-10mm.These two kinds of material grains diameters are less, between particle, have a fixed gap to be beneficial to the water flows, and granule interior also has a large amount of spaces, helps the material in the water is carried out active adsorption, played preliminary effect of purifying waste water.
Purifying layer: be made up of fermented sludge, sand and Wingdale, the volume ratio of fermented sludge, sand and Wingdale is 6: 3: 1, mixes; The particle diameter of sand and Wingdale is all less than 5mm.The existence of sand can make the root system of plant that good infiltration space and dirt settling are arranged, and certain gap is arranged between sand grains, can make upper strata matrix bulk, and prevented from caking does not produce big resistance to current.A spot of Wingdale can play the buffered effect to the potential of hydrogen of matrix, helps the growth and breeding of plant.
Vegetable layer: the emergent for the ability enriching heavy metal specifically can be reed, cattail or Rush.Plant growing is freely grown on the last layer of wetland.Matrix below the wetland is a suitable growing environment and soil to plant to be provided.
The thickness of supporting layer, elementary adsorption layer, purifying layer is respectively 0.3m, 0.1m, 1.0m.If increase thickness again, the water purification effects is not had again obvious increase.
Wherein, Fermented sludge can be the fermented sludge with following index: organism quality percentage composition >=10% in the fermented sludge; Water cut in the fermented sludge＜40%, the quality percentage composition of nitrogen phosphorus potassium satisfies following condition in the fermented sludge: [N+P2O5+K2O] >=1%.
This fermented sludge can prepare by any sludge fermentation method, prepares according to following method among the application:
1, mud pre-treatment:
With crawler belt press filter type water extracter mud is carried out processed, make water cut≤80% of mud.Mud is the waste that urban wastewater treatment firm produces in the sewage purification treating processes, generally is the solid precipitation thing that in the process of disposing of sewage, produces, like heavy mud and residual active sludge.
2, sludge composting:
The mud of step 1 is mixed with auxiliary material and fermenting agent, and the water ratio of the mixture that obtains is 60-65%, and mixture is carried out compost, and the product that obtains is said fermented sludge; Auxiliary material can be rice husk, stalk or the wood chip after the pulverizing.Fermenting agent can be commercially available any starter, specifically can be the dung beetle board microbial fermentation microbial inoculum of Hainan Nong Fengbao company.
Compost bar buttress is long: wide: height=20m: 2m: 1.5m.
In the composting process, after the central position temperature of bar buttress reaches 55 ℃, carry out the turning first time; When the central position temperature of bar buttress reach 70 ℃ and keep 3 days after, carry out the turning second time; Carry out turning for the third time after one week.
The method that embodiment 2, artificial swamp are disposed of sewage
One, method
Pending sewage is handled through removal of impurities in advance: sewage at first through removing foreign material, suspended substance, also need carry out the dosing flocculation sediment for serious pollution sewage and handle, to effluent quality COD value less than 1000mg/L.
The above-mentioned artificial swamp of in the wetland pond, packing into, the sewage after removal of impurities handled feeds the intracavity bottom in wetland pond, and sewage sees through packing layer by the bottom and rises to the surface under the effect of static hydraulic pressure, is the water outlet after the processing.
Two, result
Water after the step 1 processing is carried out WQM; Method is according to " water and effluent monitoring analytical procedure (the 4th edition) " (State Environmental Protection Administration; Water and effluent monitoring analytical procedure editorial committee) to carry out, index comprises pH, colourity, turbidity, COD, total nitrogen, total phosphorus and common heavy metal etc.
Water after result step one is handled all satisfies the These parameters regulation.
The fermented sludge particle surface has a large amount of electric charges; And contain soil ulmin; Thereby heavy metal is had intense absorption and adsorption, wherein also contain a large amount of mikrobes and also heavy metal is had absorption and inrichment, the heavy metal in the sewage is trapped in the middle of the matrix; Can plant all kinds of emergents according to local circumstances on the wetland pool surface matrix, be main with calamus or Rush, and all kinds of heavy metals in can enrichment matrix are strengthened the removal effect of pollutent.Heavy metal in the sewage is entered in the plant materials, only need focus on then and can thoroughly remove the heavy metal contamination in sewage and the matrix plant.After collecting, wetland effluent can be used for irrigating, entering rivers,lakes and seas or be used for landscape water etc.
Claims (8)
1. an artificial swamp that is used to dispose of sewage is followed successively by supporting layer, elementary adsorption layer, purifying layer and vegetable layer from the bottom to top;
Said elementary adsorption layer is at least a in zeolite and the cinder;
Said purifying layer is made up of fermented sludge, sand and Wingdale;
Said vegetable layer is the emergent of ability enriching heavy metal.
2. artificial swamp according to claim 1 is characterized in that: the thickness of said supporting layer, elementary adsorption layer, purifying layer is respectively 0.3m, 0.1m, 1.0m.
3. artificial swamp according to claim 1 and 2 is characterized in that:
Said elementary adsorption layer is made up of zeolite and cinder, and the volume ratio of zeolite and cinder is 1: 1;
In the said purifying layer, the volume ratio of fermented sludge, sand and Wingdale is 6: 3: 1;
The emergent of said ability enriching heavy metal is reed, cattail or Rush.
4. according to arbitrary described artificial swamp among the claim 1-3, it is characterized in that:
The particle diameter of said zeolite and said cinder is 5-10mm; The particle diameter of said sand and said Wingdale is all less than 5mm.
5. according to arbitrary described artificial swamp among the claim 1-4, it is characterized in that: said supporting layer is at least a in cobble and the queen closer.
6. according to arbitrary described artificial swamp among the claim 1-5, it is characterized in that: said supporting layer is made up of cobble and queen closer, and the volume ratio of cobble and queen closer is 1: 1.
7. according to arbitrary described artificial swamp among the claim 1-6, it is characterized in that: the particle diameter of said cobble and queen closer is 20-50mm.
8. the application of arbitrary said artificial swamp in purifying waste water among the claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210040000 CN102583886B (en) | 2012-02-21 | 2012-02-21 | Artificial wetland for treating sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210040000 CN102583886B (en) | 2012-02-21 | 2012-02-21 | Artificial wetland for treating sewage |
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| CN102583886A true CN102583886A (en) | 2012-07-18 |
| CN102583886B CN102583886B (en) | 2013-10-16 |
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| CN 201210040000 Expired - Fee Related CN102583886B (en) | 2012-02-21 | 2012-02-21 | Artificial wetland for treating sewage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098230A (en) * | 2014-08-01 | 2014-10-15 | 袁珩 | Assembled type artificial wetland system adopting immobilized microbes |
| CN105347486A (en) * | 2015-11-17 | 2016-02-24 | 仇颖超 | Processing method for wastewater containing heavy metal chromium |
| CN105984980A (en) * | 2016-06-28 | 2016-10-05 | 德清县新鑫达丝绸炼染有限公司 | Dyeing wastewater biomass pretreatment technique |
| CN105984979A (en) * | 2016-06-28 | 2016-10-05 | 德清县新鑫达丝绸炼染有限公司 | Dyeing wastewater biomass treatment technique |
| CN112897824A (en) * | 2021-04-26 | 2021-06-04 | 桂林理工大学 | Bamboo charcoal-photosynthetic bacteria-constructed wetland integration sewage treatment system |
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| IN186511B (en) * | 1995-11-10 | 2001-09-22 | Agharkar Res Inst | |
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| CN201381259Y (en) * | 2009-03-23 | 2010-01-13 | 桐乡市永宏塑料制品有限公司 | Ecological innocent excrement and domestic wastewater treatment system |
| CN201873573U (en) * | 2010-11-05 | 2011-06-22 | 刘云根 | Micro-nanometer air floating vertical underflow type constructed wetlands sewage treatment device |
| CN102351378A (en) * | 2011-07-12 | 2012-02-15 | 江西致远环保技术有限公司 | Method and system for processing rural sewage in artificial wetlands |
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2012
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Patent Citations (6)
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| IN186511B (en) * | 1995-11-10 | 2001-09-22 | Agharkar Res Inst | |
| CN1269334A (en) * | 1999-04-01 | 2000-10-11 | 中国科学院生态环境研究中心 | Simultaneous sludge dewatering and stabilizing ecological technology for sewage treatment plant |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098230A (en) * | 2014-08-01 | 2014-10-15 | 袁珩 | Assembled type artificial wetland system adopting immobilized microbes |
| CN104098230B (en) * | 2014-08-01 | 2016-02-17 | 深圳市华美绿环境建设工程有限公司 | A kind of assembly type immobilized microorganism artificial wet land system |
| CN105347486A (en) * | 2015-11-17 | 2016-02-24 | 仇颖超 | Processing method for wastewater containing heavy metal chromium |
| CN105984980A (en) * | 2016-06-28 | 2016-10-05 | 德清县新鑫达丝绸炼染有限公司 | Dyeing wastewater biomass pretreatment technique |
| CN105984979A (en) * | 2016-06-28 | 2016-10-05 | 德清县新鑫达丝绸炼染有限公司 | Dyeing wastewater biomass treatment technique |
| CN112897824A (en) * | 2021-04-26 | 2021-06-04 | 桂林理工大学 | Bamboo charcoal-photosynthetic bacteria-constructed wetland integration sewage treatment system |
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| CN102583886B (en) | 2013-10-16 |
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