CN102849855A - Preparation and application of dephosphorizing adsorbents for constructed wetlands - Google Patents
Preparation and application of dephosphorizing adsorbents for constructed wetlands Download PDFInfo
- Publication number
- CN102849855A CN102849855A CN2012103873439A CN201210387343A CN102849855A CN 102849855 A CN102849855 A CN 102849855A CN 2012103873439 A CN2012103873439 A CN 2012103873439A CN 201210387343 A CN201210387343 A CN 201210387343A CN 102849855 A CN102849855 A CN 102849855A
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- Prior art keywords
- dephosphorizing
- adsorbent
- dephosphorization adsorbent
- water
- adsorbents
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- 239000003463 adsorbents Substances 0.000 title claims abstract description 42
- 238000002360 preparation methods Methods 0.000 title claims abstract description 9
- 239000011901 water Substances 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims abstract description 14
- PZZYQPZGQPZBDN-UHFFFAOYSA-N Aluminium silicate Chemical compound data:image/svg+xml;base64,<?xml version='1.0' encoding='iso-8859-1'?>
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 O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 11
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 11
- 239000004568 cements Substances 0.000 claims abstract description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound 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[P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 239000010410 layers Substances 0.000 claims abstract 2
- 239000010865 sewage Substances 0.000 claims description 13
- 239000002023 wood Substances 0.000 claims description 11
- 239000002245 particles Substances 0.000 claims description 7
- 241000196324 Embryophyta Species 0.000 claims description 4
- -1 gac Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000010840 domestic wastewater Substances 0.000 abstract 3
- 238000010521 absorption reactions Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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- 238000005457 optimization Methods 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N phosphorous acid Chemical compound 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OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous materials Substances 0.000 description 1
- 239000000843 powders Substances 0.000 description 1
- 239000002994 raw materials Substances 0.000 description 1
- 239000002594 sorbents Substances 0.000 description 1
- 239000000126 substances Substances 0.000 description 1
- 239000000725 suspensions Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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 relates to dephosphorizing adsorbents for new rural construction domestic wastewater constructed wetlands in the south and a preparation method of the dephosphorizing adsorbents. The preparation method of the dephosphorizing adsorbents comprises the following steps of: stirring kaolin, active carbon, sawdust, cement and water, preparing small-grain spheres by a spheres forming device, wherein the grain sizes are 10-50mm; filling a layer of dephosphorizing adsorbent into a new rural construction domestic wastewater constructed wetlands pond in the south; and planting aquatic plant on the dephosphorizing adsorbent. Due to the inspection of the new rural construction domestic wastewater constructed wetlands engineering in the south, the adsorbent disclosed by the invention is high-efficiency in dephosphorizing effect, high in absorption capacity which is larger than 5Pmg/g, and high in dephosphorizing efficiency which is larger than 98%, and the phosphorus concentration in discharged water is less than 0.02mg/L. Compared with the common sand filling method, the adsorbent disclosed by the invention has obvious advantages.
Description
Technical field
The present invention relates to sanitary sewage disposal in the new countryside construction of Constructed Wetland For Purifying south in the ecological engineering of environment, be specifically related to class dephosphorization adsorbent and preparation method thereof and the application in artificial swamp
Background technology
From the nineteen fifty-two Chairman Mao " southern water is many, and northern water is few, as possible, borrows a water also to be fine " are proposed.The south water to north becomes the Major Strategic engineering of alleviating north of China water resources critical shortage situation.As the south of waterhead area, the improvement that water pollutes seems particularly important.In new countryside construction, the rural sewage treatment qualified discharge will play very important effect in the whole energy-saving and emission-reduction work of China.
Domestic sewage in rural areas by using is sanitary sewage and the factory effluent general name of rural villages and small town, generally comprises the three aspects :s such as kitchen waste water, life wash water, flushing water.All be as one of fertile source of farming basically before new countryside construction, take full advantage of the organic composition in the sanitary sewage, allow farm crop absorb, transform nutritive substance, seldom be lost in the water body.Along with rapid economic development, great variety has occured in the life in the countryside pattern, popularizes such as tap water, sanitary ware, washing machine, ablution facility etc.Rural area per capita water consumption suddenly increases, and has produced a large amount of sanitary sewages, simultaneously because of hygienic requirements and equipment characteristic, has been difficult to as farming fertilizer.This is also so that domestic sewage in rural areas by using directly discharges a major cause that becomes the lake river eutrophication.
Be the active demand of socio-economic development and improvement of the ecological environment to contaminated water body reparation, simultaneously, the more important thing is and carry out protection and harnessing from the source.Because artificial swamp is ecological wastewater processing technology low-cost, convenient management, be specially adapted to the waterhead area of the south water to north, thereby so that the sanitary sewage disposal in the southern new countryside construction seem particularly urgently, particularly important.
Summary of the invention
The present invention is when improving the prior art weak point, provide that a kind of cost is low, processing efficiency is high, easy to operate, be easy to change, adaptable dephosphorization adsorbent and preparation method thereof, also provide good selection for landscape artificial wetland and construction thereof and use simultaneously.
The present invention is by using soft, the easy dispersion suspension of matter in water, good plasticity-and high cohesiveness, good electrical insulation capability; Has good antiacid dissolubility, very low cation exchange capacity, the kaolin of resistivity against fire preferably.Be aided with simultaneously the pore texture prosperity, specific surface area is very large, the gac that adsorptive power is very strong, and wooden add the sawdust that stays man-hour, the wood chip of wood shavings powder, at the effect compacted under of cement.Thereby arrive efficient phosphor-removing effect.
Technical solution problem of the present invention adopts following scheme:
The characteristics of a class dephosphorization adsorbent of the present invention are: described dephosphorization adsorbent is the mixture of kaolin, gac, wood chip and the cement of particle diameter 10-50mm.
The characteristics of a class dephosphorization adsorbent of the present invention also are: the ratio of kaolin, gac, wood chip and cement is (1-25) in the described dephosphorization adsorbent: (1-25): (1-25): (1-25).
Artificial swamp of the present invention comprises the artificial swamp pond, it is characterized in that having one deck dephosphorization adsorbent in the wetland pond.
Described artificial swamp of the present invention is characterized in that having the thick dephosphorization adsorbent of one deck 1-4m in the wetland pond, and optimization thickness is 3.5m.
The characteristics of a class dephosphorization adsorbent of the present invention also are: be shaped to the particle of 10-50mm with spherical forming machine, then place the artificial swamp bottom as dephosphorization adsorbent.
The characteristics of the using method of dephosphorization adsorbent of the present invention are: dephosphorization adsorbent is filled out be laid on artificial swamp, at the artificial wetland of the present invention, water retention time is greater than 1h with pending phosphorous water, and the water outlet phosphorus concentration reaches surface water body three class standards.
The characteristics of dephosphorization adsorbent of the present invention are: sorbent material of the present invention is to the efficient adsorption effect of phosphorus, high (〉 97% of phosphor-removing effect, the water outlet phosphorus concentration is less than 0.02mg/L).
The characteristics of dephosphorization adsorbent of the present invention are: the raw material that the present invention uses is aided with the cement moulding as kaolin and gac and the wood chip of good adsorption performance.
The present invention also provides another method of construction of artificial swamp, is specially, the dephosphorization adsorbent of moulding is laid in the artificial swamp pond as filler, and then with water plant planting in the above.
Description of drawings
Fig. 1 is dephosphorization adsorbent and the simple and easy synoptic diagram in southern new countryside construction sanitary sewage artificial swamp engineering is used thereof that the present invention relates to;
Wherein 1 is spherical dephosphorization adsorbent, and 2 is waterplant, and 3 is bottom, artificial swamp pond aerating system, and 4 is sewage inlet, and 5 is back-purge system.
Embodiment
Below be to further specifying that the present invention does, but be not limitation of the present invention
Unrestricted embodiment 1:
The ratio of the kaolin that uses in the dephosphorization adsorbent in the present embodiment, gac, wood chip and cement is 1:1:1:1.
The concrete preparation method of used dephosphorization adsorbent in the present embodiment: commercially available kaolin, gac and cement are directly used without any processing, and wood chip is Furniture Factory's waste, directly uses.1:1:1:1 adds the water mixing in proportion, is shaped to the large particle of 25mm with spherical former, dries stand-by.
The fill method of used dephosphorization adsorbent artificial swamp in the present embodiment: the dephosphorization adsorbent of the 25mm that will dry is particles filled in the artificial swamp bottom, floor height 3.0m.Plant again upper waterplant.
Used dephosphorization adsorbent effect measuring in the present embodiment: the artificial swamp that dephosphorization adsorbent is filled is used for southern new countryside construction rural domestic sewage treatment, phosphorus concentration is by 0.8mg/L, be reduced to below the 0.02mg/L, see it is very efficient from the angle that phosphorus is removed, reach more than 98%, the water outlet phosphorus concentration has reached surface water body three class standards.The artificial swamp processing efficiency that shows embodiment from the result is high, and treatment effect is good.
Unrestricted embodiment 2:
The ratio of the kaolin that uses in the used dephosphorization adsorbent in the present embodiment, gac, wood chip and cement is 2:2:1:1.
The concrete preparation method of used dephosphorization adsorbent in the present embodiment: commercially available kaolin, gac and cement are directly used without any processing, and wood chip is Furniture Factory's waste, directly uses.2:2:1:1 adds the water mixing in proportion, is shaped to the large particle of 50mm with spherical former, dries stand-by.
Dephosphorization adsorbent is at the fill method of southern new countryside construction sanitary sewage artificial swamp in the present embodiment: the dephosphorization adsorbent of the 50mm that will dry is particles filled in the artificial swamp bottom, floor height 3.5m.Plant again upper waterplant.
Dephosphorization adsorbent effect measuring in the present embodiment: the artificial swamp that dephosphorization adsorbent is filled is used for southern new countryside construction rural domestic sewage treatment, phosphorus concentration is by 0.8mg/L, be reduced to below the 0.02mg/L, the angle of only removing from phosphorus sees it is very efficient, reach more than 98%, the water outlet phosphorus concentration has reached surface water body three class standards.The artificial swamp processing efficiency that shows embodiment from the result is high, and treatment effect is good.
Claims (4)
1. a class artificial swamp, comprise the artificial swamp pond, it is characterized in that having one deck dephosphorization adsorbent in the wetland pond, the above plants waterplant, be applied to southern new countryside construction sanitary sewage disposal, large (〉 5P mg/g of loading capacity), dephosphorization efficiency by using high (greater than 98%, the water outlet phosphorus concentration is lower than 0.02 mg/L).
2. require according to right 1, it is characterized in that described dephosphorization adsorbent layer is at 1-4m.
3. require according to right 1, it is characterized in that, the dephosphorization adsorbent that has is that kaolin, gac, wood chip are equipped with cement production systD.
4. the preparation method of right 1 desired dephosphorization adsorbent is characterized in that operating by the following method:
Kaolin, gac, wood chip and cement proportion are at (1-25): (1-25): (1-25): proportional range proportioning (1-25), and add water and stir, be processed into the spheroidal particle of 10-50mm with spherical former, the normal temperature placement is dried.
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| CN2012103873439A CN102849855A (en) | 2012-10-15 | 2012-10-15 | Preparation and application of dephosphorizing adsorbents for constructed wetlands |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528902A (en) * | 2014-12-16 | 2015-04-22 | 上海交通大学 | Novel polymeric aluminum chloride dephosphorizing filler and preparation method thereof |
| CN106315705A (en) * | 2015-09-17 | 2017-01-11 | 袁振 | Water body eutrophication treatment floating particles prepared from forestry and agricultural residues |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266752A (en) * | 2011-06-24 | 2011-12-07 | 东北师范大学 | Method for preparing carbonizing absorption grains used for purifying water |
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2012
- 2012-10-15 CN CN2012103873439A patent/CN102849855A/en not_active Application Discontinuation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266752A (en) * | 2011-06-24 | 2011-12-07 | 东北师范大学 | Method for preparing carbonizing absorption grains used for purifying water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528902A (en) * | 2014-12-16 | 2015-04-22 | 上海交通大学 | Novel polymeric aluminum chloride dephosphorizing filler and preparation method thereof |
| CN106315705A (en) * | 2015-09-17 | 2017-01-11 | 袁振 | Water body eutrophication treatment floating particles prepared from forestry and agricultural residues |
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