CN102616936B - Coupled zero-valent iron composite vertical flow artificial wetland - Google Patents
Coupled zero-valent iron composite vertical flow artificial wetland Download PDFInfo
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- CN102616936B CN102616936B CN2012100837040A CN201210083704A CN102616936B CN 102616936 B CN102616936 B CN 102616936B CN 2012100837040 A CN2012100837040 A CN 2012100837040A CN 201210083704 A CN201210083704 A CN 201210083704A CN 102616936 B CN102616936 B CN 102616936B
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides a coupled zero-valent iron composite vertical flow artificial wetland, comprising a pool body, wherein the pool body is divided into a down-flow pool and an upper-flow pool through a clapboard; a water inlet pipe is arranged at the top of the down-flow pool; a water outlet pipe is arranged at the top of the upper-flow pool; the down-flow pool and the upper-flow pool are internally provided with fillers and planted with emergent aquatic plants; the fillers in the down-flow pool comprise a sand layer, a red earth layer, a zero-valent iron layer and a substrate layer in sequence from top to bottom; the fillers in the upper-flow pool comprise a substrate layer, a zero-valent iron layer, a red earth layer and a sand layer in sequence from bottom to top; and the bottom of the substrate layer in the down-flow pool and the bottom of the substrate layer in the upper-flow pool are mutually communicated to form a water flow channel.
Description
Technical field
The invention belongs to Sewage treatment systems, particularly a kind of composite vertical current artificial wetland Sewage treatment systems.
Background technology
Artificial marsh sewage treatment system is a kind of Sewage treatment systems that grows up the seventies in 20th century, is divided into vertical current underflow type artificial wet land, horizontal flow underflow type artificial wet land and irrigation canals and ditches type artificial swamp usually.Artificial swamp mainly is made up of packing layer (packing layer has layer of sand, red soil layer and hypothallus usually), plant and microorganism three parts, and in a wet land system, the three can both play the removal effect to pollutants in sewage.Artificial swamp is removed the suspended substance (SS) in the waste water by physical sedimentation, filteration; Utilize BOD and COD in microorganism absorption and the metabolism removal waste water, utilize N, P element in biological denitrificaion and the plant absorbing method removal waste water.Its concrete mechanism of action:
(1) effect of wet land filler layer: in artificial wet land system, when particle is moved to the filler particles surface in the water, under Van der Waals force and the electrostatic forcing and under some chemical bond and some special chemisorption power effect, be adhered on the filler particles, also may be adsorbed because there being flocculation particulate bridging action.In addition, because wetland bed body is in flooded condition for a long time, the filler in a lot of zones of bed body forms soil colloid, and soil colloid itself has great absorption property, also can hold back and adsorb the suspended particle in the water inlet.
(2) effect of wetland plant: artificial swamp is divided into the floating plant artificial swamp according to the difference of main plant sociales, the floatingleaved plant artificial swamp, and the emergent artificial swamp, submerged plant artificial swamps etc. are dissimilar.Plant in the wetland plays epochmaking influence for the interaction energy of wetland purification sewage.At first, wetland plant has the ability of decomposing and transforming organism and other materials.Plant can directly absorb available nutritive substance, as N in the water body and P etc. by the assimilation effect from sewage.Ammonium salt in the water, nitrate and phosphoric acid salt can both be absorbed by plant materials by this effect, are left water body by gathering at last.Secondly, the root system of plant can adsorb and enriching heavy metal class hazardous and noxious substances.
(3) Decomposition of microorganism: in the wet land system, aerobic microbiological passes through respiration, organism in the waste water is decomposed into carbonic acid gas and water, anaerobic bacterium is resolved into carbonic acid gas and methane with organic substance, nitrobacteria is nitrated with ammonium salt, and denitrifying bacterium becomes nitrogen with nitrate-nitrogen reduction.
Artificial swamp has to be built and advantages such as working cost is cheap, easy handling and maintenance, still the existing artificial swamp organic pollutant of poisonous and harmful such as the microbiotic in the decomposition and inversion waste water, aromatics, organic eyeball class and difficult degradation effectively.
Therefore, need improve, strengthen its degradation efficiency, so that develop a kind of novel artificial wet land system of economical and efficient to poisonous and harmful Persistent organic pollutants in the waste water to existing artificial swamp.
Summary of the invention
The purpose of this invention is to provide a kind of coupling Zero-valent Iron composite vertical current artificial wetland,, promote the advanced treatment and the safe reuse of sewage to strengthen the decomposition and inversion ability of artificial wet land system to poisonous difficult degradation pollutent in the sewage.
Technical scheme of the present invention: in the packing layer of existing vertical current constructed wetland, increase the Zero-valent Iron layer, and described Zero-valent Iron is placed between red soil layer and the hypothallus.
Coupling Zero-valent Iron composite vertical current artificial wetland of the present invention, comprise the pond body, described pond body is divided into downstream tank and up pond by dividing plate, the downstream tank top is provided with water inlet pipe, top, up pond is provided with rising pipe, filler all is housed in the downstream tank and in the up pond and plants and be implanted with emergent, filler in the downstream tank is followed successively by layer of sand from top to bottom, the red soil layer, Zero-valent Iron layer and hypothallus, filler in the up pond is followed successively by hypothallus from the bottom to top, the Zero-valent Iron layer, red soil layer and layer of sand, hypothallus bottom in the downstream tank and the hypothallus bottom in the up pond connect mutually, form water stream channel.
Coupling Zero-valent Iron composite vertical current artificial wetland of the present invention is 0.1～0.35m at the water inlet hydraulic load
3/ (m
2D) move under the condition, processed waste water enters downstream tank by the water inlet pipe at downstream tank top, layer of sand in downstream tank, red soil layer, Zero-valent Iron layer and hypothallus enter bottom, up pond, the water shoot from top, up pond is discharged behind hypothallus in up pond, Zero-valent Iron layer, red soil layer and the layer of sand again, realizes the processing to waste water.Described water inlet pipe taps into water system, and described rising pipe picks out water system.
Coupling Zero-valent Iron composite vertical current artificial wetland of the present invention, each packing layer composition and thickness in its downstream tank, the up pond are as follows:
Described Zero-valent Iron layer is made up of the zero-valent iron particle that iron-holder is at least 90%, particle diameter is 1～5mm, and thickness is 10～50cm.Described Zero-valent Iron is a kind of during sponge iron, iron filings, iron plane are spent.
Described layer of sand is that the quartz sand of 1～3mm is formed by particle diameter, and thickness is 20～40cm.
Described red soil layer is made up of Southern Red Soil, and thickness is 20～30cm.
Described hypothallus is at least a composition the in the zeolite, gravel, cobble, volcanics, Wingdale of 5～20mm by particle diameter, and thickness is 15～35cm.
Zero-valent Iron layer in the coupling Zero-valent Iron composite vertical current artificial wetland of the present invention is poisonous and harmful and difficult degradation pollutent such as microbiotic, aromatics, organic eyeball class in the decomposition and inversion waste water effectively, its degraded intermediate product can further be adsorbed by the microbial film on emergent and root system surface thereof and the microorganism, the mineral that are present in other packing layer, assimilation and alienation, therefore, be a kind of novel Sewage treatment systems, be particularly suitable for the trade effluent and the breeding wastewater that contain poisonous difficult degradation pollutent are carried out advanced treatment.
The present invention has following beneficial effect:
1, owing to increased the Zero-valent Iron layer in the downstream tank of artificial swamp of the present invention and the filler in the up pond, and described Zero-valent Iron is placed between red soil layer and the hypothallus, therefore the poisonous Persistent organic pollutants in can not only decomposition and inversion waste water, and the thorough mineralizing and degrading of small organic molecule that the Zero-valent Iron decomposition and inversion can be generated, compare with existing artificial swamp, effectively strengthened decomposition and inversion ability poisonous difficult degradation pollutent in the sewage.
2, the filler of artificial swamp of the present invention is easy to obtain, and production process is simple, thereby is convenient to promote the use of.
Description of drawings
Fig. 1 is the structural representation of coupling Zero-valent Iron composite vertical current artificial wetland of the present invention.
Among the figure, 1-pond body; The 2-water inlet pipe; The 3-emergent; The 4-layer of sand; 5-red soil layer; 6-Zero-valent Iron layer; The 7-hypothallus; The 8-rising pipe; The 9-dividing plate.
Embodiment
Be described further to the structure of coupling Zero-valent Iron composite vertical current artificial wetland of the present invention with to the processing of waste water below in conjunction with accompanying drawing.
Embodiment 1
In the present embodiment, the structure of coupling Zero-valent Iron composite vertical current artificial wetland as shown in Figure 1, by pond body 1, dividing plate 9, filler, emergent 3, water inlet pipe 2 and rising pipe 8 are formed.Described pond body 1 and dividing plate 9 are used concrete for making, and dividing plate 9 is positioned at Chi Tizhong, and the pond body is divided into downstream tank and up pond; The downstream tank top is provided with water inlet pipe 2, and top, up pond is provided with rising pipe 8, and described water inlet pipe is connected with water inlet system, and described rising pipe is connected with outlet system; Filler in the downstream tank is followed successively by layer of sand 4, red soil layer 5, Zero-valent Iron layer 6 and hypothallus 7 from top to bottom, layer of sand 4 is that the quartz sand of 1～3mm is formed by particle diameter, thickness is 20cm, red soil layer 5 is made up of Southern Red Soil, thickness is 30cm, and Zero-valent Iron layer 6 is made up of the sponge iron particle that iron-holder is 98%, particle diameter is 1～3mm, and thickness is 10cm, hypothallus 7 is that the cobble of 10～20mm is formed by particle diameter, and thickness is 35cm; Filler in the up pond is followed successively by hypothallus 7, Zero-valent Iron layer 6, red soil layer 5 and layer of sand 4 from the bottom to top, and the composition of described hypothallus 7, Zero-valent Iron layer 6, red soil layer 5 and layer of sand is identical with downstream tank with thickness; Emergent 3 is a reed, be planted in the downstream tank and up pond in; Hypothallus bottom in the downstream tank and the hypothallus bottom in the up pond connect mutually, form water stream channel.
Be used for the water outlet of advanced treatment China pig farm after the anaerobic-aerobic biological treatment system is handled with the described coupling Zero-valent Iron of present embodiment composite vertical current artificial wetland, the COD value of this waste water is 80-120mg/L, total nitrogen (TN) value is 30～80mg/L, total phosphorus (TP) value is 30～70mg/L, heavy metal total concn (Zn, Pb, Cu, Ni and Cr) 0.1～0.3mg/L, microbiotic total concn 0.4～1.0mg/L for animals.With the downstream tank of processed waste water through water inlet system, water inlet pipe 2 input coupling Zero-valent Iron composite vertical current artificial wetlands, layer of sand 4 in downstream tank, red soil layer 5, Zero-valent Iron layer 6 and hypothallus 7 enter bottom, up pond, and the water shoot 8 from top, up pond is discharged behind the hypothallus in up pond 7, Zero-valent Iron layer 6, red soil layer 5 and the layer of sand 4 again.At the water inlet hydraulic load is 0.25m
3/ (m
2D) under the condition, handle continuously in 180 days the process of this waste water, the clearance of the COD in the waste water, TN, TP, heavy metal total concn and microbiotic total concn for animals is respectively up to 85%, 81%, 97%, 100% and 100%.
Embodiment 2
In the present embodiment, the structure of coupling Zero-valent Iron composite vertical current artificial wetland as shown in Figure 1, by pond body 1, dividing plate 9, filler, emergent 3, water inlet pipe 2 and rising pipe 8 are formed.Described pond body 1 and dividing plate 9 are used concrete for making, and dividing plate 9 is positioned at Chi Tizhong, and the pond body is divided into downstream tank and up pond; The downstream tank top is provided with water inlet pipe 2, and top, up pond is provided with rising pipe 8, and described water inlet pipe is connected with water inlet system, and described rising pipe is connected with outlet system; Filler in the downstream tank is followed successively by layer of sand 4, red soil layer 5, Zero-valent Iron layer 6 and hypothallus 7 from top to bottom, layer of sand 4 is that the quartz sand of 1～3mm is formed by particle diameter, thickness is 40cm, red soil layer 5 is made up of Southern Red Soil, thickness is 20cm, and Zero-valent Iron layer 6 is made up of the iron filings that iron-holder is 98%, particle diameter is 2～5mm, and thickness is 50cm, hypothallus 7 is that zeolite and the gravel of 5～20mm formed by particle diameter, and thickness is 15cm; Filler in the up pond is followed successively by hypothallus 7, Zero-valent Iron layer 6, red soil layer 5 and layer of sand 4 from the bottom to top, and the composition of described hypothallus 7, Zero-valent Iron layer 6, red soil layer 5, layer of sand 4 is identical with downstream tank with thickness; Emergent 3 is a cattail, be planted in the downstream tank and up pond in; Hypothallus bottom in the downstream tank and the hypothallus bottom in the up pond connect mutually, form water stream channel.
With the described coupling Zero-valent Iron of present embodiment composite vertical current artificial wetland advanced treatment 2-cyano group ether concentration is the simulated wastewater of 2mg/L, with the downstream tank of processed waste water through water inlet system, water inlet pipe 2 input coupling Zero-valent Iron composite vertical current artificial wetlands, layer of sand 4 in downstream tank, red soil layer 5, Zero-valent Iron layer 6 and hypothallus 7 enter bottom, up pond, and the water shoot 8 from top, up pond is discharged behind the hypothallus in up pond 7, Zero-valent Iron layer 6, red soil layer 5 and the layer of sand 4 again.At the water inlet hydraulic load is 0.3m
3/ (m
2D) under the condition, handle continuously in 150 days the process of this simulated wastewater, all do not detect 2-cyano group ether in the water outlet after handling, show that coupling Zero-valent Iron composite vertical current artificial wetland of the present invention can effectively remove the 2-cyano group ether in the simulated wastewater.
Claims (7)
1. coupling Zero-valent Iron composite vertical current artificial wetland, comprise pond body (1), described pond body (1) is divided into downstream tank and up pond by dividing plate (9), the downstream tank top is provided with water inlet pipe (2), top, up pond is provided with rising pipe (8), filler all is housed in the downstream tank and in the up pond and plants and be implanted with emergent (3), it is characterized in that the filler in the downstream tank is followed successively by layer of sand (4) from top to bottom, red soil layer (5), Zero-valent Iron layer (6) and hypothallus (7), filler in the up pond is followed successively by hypothallus (7) from the bottom to top, Zero-valent Iron layer (6), red soil layer (5) and layer of sand (4), hypothallus bottom in the downstream tank and the hypothallus bottom in the up pond connect mutually, form water stream channel.
2. according to the described coupling Zero-valent Iron of claim 1 composite vertical current artificial wetland, it is characterized in that processed waste water enters downstream tank by the water inlet pipe (2) at downstream tank top, layer of sand in downstream tank (4), red soil layer (5), Zero-valent Iron layer (6) and hypothallus (7) enter bottom, up pond, and the rising pipe (8) from top, up pond is discharged behind the hypothallus in up pond (7), Zero-valent Iron layer (6), red soil layer (5) and the layer of sand (4) again.
3. according to claim 1 or 2 described coupling Zero-valent Iron composite vertical current artificial wetlands, it is characterized in that described Zero-valent Iron layer (6) is made up of the zero-valent iron particle that iron-holder is at least 90%, particle diameter is 1～5 mm, thickness is 10～50 cm.
4. according to the described coupling Zero-valent Iron of claim 3 composite vertical current artificial wetland, it is characterized in that described Zero-valent Iron is a kind of during sponge iron, iron filings, iron plane are spent.
5. coupling Zero-valent Iron composite vertical current artificial wetland according to claim 1 and 2 is characterized in that described layer of sand (4) is that the quartz sand of 1～3 mm is formed by particle diameter, and thickness is 20～40cm.
6. coupling Zero-valent Iron composite vertical current artificial wetland according to claim 1 and 2 is characterized in that described red soil layer (5) is made up of Southern Red Soil, and thickness is 20～30cm.
7. coupling Zero-valent Iron composite vertical current artificial wetland according to claim 1 and 2, it is characterized in that described hypothallus (7) is at least a composition the in the zeolite, gravel, cobble, volcanics, Wingdale of 5～20mm by particle diameter, thickness is 15～35cm.
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| CN102616936B true CN102616936B (en) | 2013-07-24 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103693811B (en) * | 2013-12-23 | 2014-12-03 | 中国农业大学 | Movable micro electrolysis wetland sewage treatment method and system |
| CN104118940B (en) * | 2014-01-10 | 2016-04-20 | 中国科学院城市环境研究所 | A kind of red soil base constructed wetland device repaired for mine wastewater heavy metal contamination |
| CN103951140B (en) * | 2014-04-25 | 2016-06-01 | 大连理工大学 | The low concentration wastewater treatment process of a kind of anaerobic built-in zero-valent iron reactor coupling artificial swamp |
| CN105621786B (en) * | 2015-04-23 | 2018-02-06 | 广西师范大学 | A kind of vertical artificial wet land system of upper up-flow for handling agricultural non-point source pollution |
| CN106430541A (en) * | 2016-09-26 | 2017-02-22 | 成都信息工程大学 | Biological trickling filter treatment system and treatment method of domestic wastewater |
| CN107540094B (en) * | 2017-10-26 | 2020-09-29 | 广西师范大学 | Constructed wetland sewage treatment system |
| CN108585177A (en) * | 2018-06-08 | 2018-09-28 | 华东师范大学 | The perpendicular stream reinforcing formula biological water purification device of one kind and process for purifying water |
| CN109574233B (en) * | 2018-12-18 | 2021-06-25 | 北京工业大学 | Artificial wetland system added with zeolite loaded nano zero-valent iron |
| CN110972884A (en) * | 2019-12-12 | 2020-04-10 | 厦门理工学院 | Nitrogen and phosphorus removal artificial improved soil and preparation method and application thereof |
| CN110776106A (en) * | 2019-12-12 | 2020-02-11 | 厦门理工学院 | Hierarchical ecological treatment system for treating rural domestic sewage and rain sewage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293708A (en) * | 2007-04-25 | 2008-10-29 | 宝山钢铁股份有限公司 | Artificial wet land and uses thereof |
| KR20080114259A (en) * | 2007-06-27 | 2008-12-31 | 대한주택공사 | Treatment method of greywater using constructed wetland and apparatus thereof |
| CN101456652A (en) * | 2009-01-05 | 2009-06-17 | 北京大学 | Device of depth denitrogen and phosphorus removal composite processing system by micro-power and method thereof |
-
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- 2012-03-27 CN CN2012100837040A patent/CN102616936B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101293708A (en) * | 2007-04-25 | 2008-10-29 | 宝山钢铁股份有限公司 | Artificial wet land and uses thereof |
| KR20080114259A (en) * | 2007-06-27 | 2008-12-31 | 대한주택공사 | Treatment method of greywater using constructed wetland and apparatus thereof |
| CN101456652A (en) * | 2009-01-05 | 2009-06-17 | 北京大学 | Device of depth denitrogen and phosphorus removal composite processing system by micro-power and method thereof |
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Effective date of registration: 20191114 Address after: 5, No. 6, building 6, No. 200, Tianfu five street, Chengdu hi tech Zone, Sichuan, 610000 Patentee after: Chengdu Baisen Environmental Protection Technology Co., Ltd. Address before: Shuangliu County Sichuan Road Chengdu City, Sichuan province 610207 two No. 2 Patentee before: Sichuan University |
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