CN106219760A - A kind of strengthen cryogenic nitrogen, the compound iron enzymatic wet land biofilm system of phosphorus ligands and method - Google Patents
A kind of strengthen cryogenic nitrogen, the compound iron enzymatic wet land biofilm system of phosphorus ligands and method Download PDFInfo
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- CN106219760A CN106219760A CN201610710032.XA CN201610710032A CN106219760A CN 106219760 A CN106219760 A CN 106219760A CN 201610710032 A CN201610710032 A CN 201610710032A CN 106219760 A CN106219760 A CN 106219760A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/342—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
A kind of strengthening cryogenic nitrogen, the compound iron enzymatic wet land biofilm system of phosphorus ligands and method, it relates to technical field of sewage.This system includes cistern, stores iron ion pond, peristaltic pump of intaking, enters iron ion peristaltic pump, water inlet pipe, enters iron ion pipe, water distribution area, slag filler district, slow release carbon source district, gravel filling district, the upper strata area of coverage, wetland plant, gathering ground and delivery pipe.The present invention takes periodically to pump into inside wetland ecotourism membranous system the mode of iron ion, by compound iron enzymatic catalysis and the coupling process of slow release carbon source alimentation and utilize the characteristic that matrix-active adsorption site and coagulation increase, and then ensure the low-temperature denitrification phosphorous removal ability of system high efficiency.Native system has the advantages such as low cost, low-temperature denitrification phosphorous removal ability be strong, stable.
Description
Technical field
The present invention relates to technical field of sewage, be specifically related to a kind of compound iron enzymatic wet land biofilm system and side
Method, it is adaptable to the low temperature of the dispersion type domestic wastewater nitrogen phosphorus such as villages and small towns is removed.
Background technology
Along with the domestic sewage of villages and small towns discharge capacity day by day increased and widespread pollution from the overuse of fertilizers and pesticides in rural area, select that technique is simple, low cost,
Respond well water technology is the key solving current problem.Artificial swamp because of its little, energy consumption of investment and operating cost is low,
Applied widely and receive much concern.But, major part wet land system denitrogenation dephosphorizing poor performance, particularly in north cold area.
Long-term low temperature environment result in the metabolic rate decline of antibacterial and plant, denitrogenation dephosphorizing performance reduces, operation stability is poor
Problem, limits it and northerly promotes on a large scale.
About artificial swamp low-temperature reinforcement technology, there are reports: such as: the reinforcement techniques such as insulation isolation, aeration, backflow.
But there is not the relevant report carrying out enhanced biological membranous system cold operation from compound iron enzymatic angle yet.Prior art is examined
Rope, only CN200910013776.6 disclose a kind of method of promoting denitrification and dephosphorization of activated sludge sewerage by using composite iron enzyme, pass through hydrogen-oxygen
Change the combination of ferrum flco and active pollution index, realize strengthening the purpose of nitrogen phosphorus ligands.And CN201510427266.9 is open
A kind of high efficiency composition iron-based dephosphorization adsorbent and preparation method thereof, using method and renovation process, utilize iron-based oxide and
Kieselguhr prepares adsorbent, and passing hole channel structure and avtive spot realize the efficient removal of phosphorus.With activated Sludge System not
With, wet land system belongs to biofilm system.At present, still without about compound iron enzymatic strengthened artificial wet land biofilm system low temperature
The relevant report of denitrogenation dephosphorizing.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, it is an object of the invention to provide a kind of strengthening cryogenic nitrogen, phosphorus ligands
Compound iron enzymatic wet land biofilm system and method, it is achieved the efficient cryogenic denitrogenation of northern China cold district artificial swamp removes
Phosphorus process.
The present invention combines the feature of horizontal drowned flow baffling artificial swamp, by slag district, wet land system front end or end gravel
Stone district is continuously pumped into certain density iron ion, in conjunction with in the middle part of wood core section, build compound iron based on slow release carbon source
Enzymatic wet land biofilm system, to realizing efficient denitrogenation dephosphorizing process.
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands of the present invention, it include cistern,
Store iron ion pond, peristaltic pump of intaking, enter iron ion peristaltic pump, water inlet pipe, enter iron ion pipe, water distribution area, slag filler district, slow release
Carbon source district, gravel filling district, the upper strata area of coverage, wetland plant, gathering ground and delivery pipe；
Described slag filler district is arranged on the left of slow release carbon source district, and gravel filling district is arranged on the right side of slow release carbon source district,
The water inlet of described water inlet peristaltic pump connects with the outlet of cistern, the outlet of water inlet peristaltic pump and the water inlet of water inlet pipe
Mouth connection, the outlet of water inlet pipe connects with water distribution area, and water distribution area is arranged on the left side of the upper strata area of coverage, the right side of the upper strata area of coverage
Side is provided with gathering ground, and the upper strata area of coverage is arranged on slag filler district, slow release carbon source district and the top in gravel filling district, and upper strata is covered
Wetland plant is planted in cover region；The water inlet entering iron ion peristaltic pump connects with the outlet storing iron ion pond, enters iron ion compacted
The outlet of dynamic pump connects with the water inlet entering iron ion pipe, and the outlet entering iron ion pipe connects with slag filler district；Discharge
The outlet of pipe connects with gathering ground.
The method that a kind of compound iron enzymatic wet land biofilm system of the present invention is strengthened cryogenic nitrogen, gone dephosphorization, uses above-mentioned
Compound iron enzymatic wet land biofilm system proceed as follows:
Waste water in cistern is pumped into water distribution area by water inlet peristaltic pump from the water inlet pipe of system, stores iron ion pond simultaneously
In iron ion by entering iron ion peristaltic pump via the front end entering iron ion pipe and being pumped into gravel filling district；Waste water is via water distribution
District sequentially passes through slag packing area, slow release carbon source district and gravel filling district and reacts, and finally gets rid of via delivery pipe, i.e. completes institute
The strengthening cryogenic nitrogen stated, the method going dephosphorization.
The present invention comprises following beneficial effect:
Heretofore described system, by continuously pumping into iron ion to slag filler district, not only increases slag originally
The activated adoption site of body, and effectively enhance biomembrane activity and the ability of opposing changing environment, and then enhance low
Temperature denitrogenation dephosphorizing ability；Meanwhile, slow release carbon source district in middle part then ensure that final nitrogen is removed.
The present invention is inside wetland ecotourism membranous system, by materialization means (matrix-active adsorption site and the increasing of coagulation
Adding) method of coupling biochemical apparatus (compound iron enzymatic catalysis+slow release carbon source district internal carbon source supply) effectively overcomes cryogenic nitrogen phosphorus
The problem that clearance is low, it is adaptable to the high-efficient denitrification and dephosphorization of cold district dispersion type domestic wastewater.
1, compound iron enzymatic wet land biofilm system of the present invention, by iron ion fortified microorganism electron transmission
The problem that low temperature wetland purification efficiency is low is overcome with enzymatic reaction.
2, compound iron enzymatic wet land biofilm system of the present invention, the matrix-active also taking full advantage of increase is inhaled
The coagulation of attached site and iron ion realizes high-efficient denitrification and dephosphorization process.
3, compound iron enzymatic wet land biofilm system of the present invention, feeds coupling by the internal carbon source in slow release carbon source district
Closing compound iron enzymatic catalysis, the high-performance bio of effective guarantee nitrogen phosphorus is removed.
Accompanying drawing explanation
The structural representation of Fig. 1 present system；Wherein, 1: cistern, 2: store iron ion pond: 3: water inlet peristaltic pump, 4:
Enter iron ion peristaltic pump: 5: water inlet pipe, 6: enter iron ion pipe, 7: water distribution area, 8: slag filler district:, 9: slow release carbon source district, 10:
Gravel filling district, 11: the upper strata area of coverage, 12: wetland plant, 13: gathering ground, 14: delivery pipe.
Detailed description of the invention
Detailed description of the invention one: combine Fig. 1 and present embodiment is described, a kind of strengthening cryogenic nitrogen of present embodiment, phosphorus go
The compound iron enzymatic wet land biofilm system removed, it include cistern 1, store iron ion pond 2, water inlet peristaltic pump 3, to enter iron ion compacted
Dynamic pump 4, water inlet pipe 5, enter iron ion pipe 6, water distribution area 7, slag filler district 8, slow release carbon source district 9, gravel filling district 10, upper strata are covered
Cover region 11, wetland plant 12, gathering ground 13 and delivery pipe 14；
Described slag filler district 8 is arranged on the left of slow release carbon source district 9, and gravel filling district 10 is arranged at slow release carbon source district 9
Right side, the water inlet of described water inlet peristaltic pump 3 connects with the outlet of cistern 1, the outlet of water inlet peristaltic pump 3 and water inlet
The water inlet connection of pipe 5, the outlet of water inlet pipe 5 connects with water distribution area 7, and water distribution area 7 is arranged on the left side of the upper strata area of coverage 11,
The right side of the upper strata area of coverage 11 is provided with gathering ground 13, and the upper strata area of coverage 11 is arranged on slag filler district 8, slow release carbon source district 9 and
The top in gravel filling district 10, the upper strata area of coverage 11 is planted wetland plant 12；Enter water inlet and the storage ferrum of iron ion peristaltic pump 4
The outlet connection in ion pond 2, the outlet entering iron ion peristaltic pump 4 connects with the water inlet entering iron ion pipe 6, enters iron ion
The outlet of pipe 6 connects with slag filler district 8；The outlet of delivery pipe 14 connects with gathering ground 13.
The slag filler district 8 of present embodiment is arranged on horizontal drowned flow baffling wetland front end, iron ion by peristaltic pump with
Finite concentration and flow velocity periodically pump into slag district；Slow release carbon source district 9 is arranged in the middle part of wetland, and gravel filling district 10 is arranged on wet
Ground end.
Waste water successively strengthens slag district, slow release carbon source district and gravel filling district through compound iron enzymatic, by compound iron enzyme
Rush effect and the coupling process of slow release carbon source Denitrification, realize the internal efficient low-temperature denitrification phosphorous removal mistake of same system
Journey.
Detailed description of the invention two: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
Being: the substrate that the slag filler in described slag filler district 8 is used is slag, slag thickness is less than 40cm, and particle diameter is 4
～8cm.Other composition is identical with detailed description of the invention one with connected mode.
Detailed description of the invention three: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
It is: the iron concentration in described compound iron enzymatic wet land biofilm system maintains 1～5mg/L.Other composition and connection
Mode is identical with detailed description of the invention one.
Detailed description of the invention four: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
It is: the iron concentration in described compound iron enzymatic wet land biofilm system maintains 2～4mg/L.Other composition and connection
Mode is identical with detailed description of the invention one.
Detailed description of the invention five: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
It is: the iron concentration in described compound iron enzymatic wet land biofilm system maintains 2～3mg/L.Other composition and connection
Mode is identical with detailed description of the invention one.
Detailed description of the invention six: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
It is: the iron concentration in described compound iron enzymatic wet land biofilm system maintains 1～3mg/L.Other composition and connection
Mode is identical with detailed description of the invention one.
Detailed description of the invention seven: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
It is: the biomass carbon source that described slow release carbon source district 9 fills is waste wood head block, rice straw, corn straw, corncob and withered
One or more in junk press combination in any, and filling thickness is less than 40cm, and particle diameter is 3～5cm.Other composition and connection side
Formula is identical with detailed description of the invention one.
Detailed description of the invention eight: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
It is: the biomass carbon source input coefficient in described slow release carbon source district 9 is freely arranged, is not compacted.Other composition and connection side
Formula is identical with detailed description of the invention one.
Detailed description of the invention nine: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
Being: the substrate that described gravel filling district 10 uses is gravel, filling thickness is less than 40cm, and particle diameter is 4～8cm.Other group
Become identical with detailed description of the invention one with connected mode.
Detailed description of the invention ten: combine Fig. 1 and present embodiment, present embodiment and detailed description of the invention one difference are described
Be: the packing volume in described slag filler district 8, slow release carbon source district 9 and gravel filling district 10 than for 2:2:2 or 2:1:3, and
Slag filler district 8, slow release carbon source district 9 and gravel filling district 10 are divided into two compartments, totally 6 compartments.Other composition and connection
Mode is identical with detailed description of the invention one.
Detailed description of the invention 11: combining Fig. 1 and present embodiment is described, present embodiment is different from detailed description of the invention one
Point is: the substrate of the described upper strata area of coverage 11 is gravel, and filling thickness is less than 10cm.Other composition and connected mode with
Detailed description of the invention one is identical.
The filling thickness of present embodiment is less than 10cm, beneficially Atmospheric Diffusion, and clod cover district, upper strata kind has wet
Ground plant.
Detailed description of the invention 12: combining Fig. 1 and present embodiment is described, present embodiment is with detailed description of the invention one not
It is with putting:
Waste water in cistern 1 is pumped into water distribution area 7 by water inlet peristaltic pump 3 from the water inlet pipe 5 of system, store simultaneously ferrum from
Iron ion in subpool 2 is by entering iron ion peristaltic pump 4 via the front end entering iron ion pipe 6 and being pumped into gravel filling district 10；Useless
Water sequentially passes through slag packing area 8, slow release carbon source district 9 and gravel filling district 10 via water distribution area 7 and reacts, finally via discharge
Pipe 14 is got rid of, and i.e. completes the described method strengthened cryogenic nitrogen, go dephosphorization.
Detailed description of the invention 13: combining Fig. 1 and present embodiment is described, present embodiment is with detailed description of the invention 12 not
With being: the iron concentration in described compound iron enzymatic wet land biofilm system maintains 1～5mg/L.Other forms and connects
The mode that connects is identical with detailed description of the invention 12.
Present invention is not limited only to the content of the respective embodiments described above, one of them or the group of several detailed description of the invention
Contract sample can also realize the purpose of invention.
By following example checking beneficial effects of the present invention:
Embodiment 1
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands of the present embodiment, it includes water-retention
Pond 1, store iron ion pond 2, water inlet peristaltic pump 3, enter iron ion peristaltic pump 4, water inlet pipe 5, enter iron ion pipe 6, water distribution area 7, slag
Packing area 8, slow release carbon source district 9, gravel filling district 10, the upper strata area of coverage 11, wetland plant 12, gathering ground 13 and delivery pipe 14；
Described slag filler district 8 is arranged on the left of slow release carbon source district 9, and gravel filling district 10 is arranged at slow release carbon source district 9
Right side, the water inlet of described water inlet peristaltic pump 3 connects with the outlet of cistern 1, the outlet of water inlet peristaltic pump 3 and water inlet
The water inlet connection of pipe 5, the outlet of water inlet pipe 5 connects with water distribution area 7, and water distribution area 7 is arranged on the left side of the upper strata area of coverage 11,
The right side of the upper strata area of coverage 11 is provided with gathering ground 13, and the upper strata area of coverage 11 is arranged on slag filler district 8, slow release carbon source district 9 and
The top in gravel filling district 10, the upper strata area of coverage 11 is planted wetland plant 12；Enter water inlet and the storage ferrum of iron ion peristaltic pump 4
The outlet connection in ion pond 2, the outlet entering iron ion peristaltic pump 4 connects with the water inlet entering iron ion pipe 6, enters iron ion
The outlet of pipe 6 connects with slag filler district 8；The outlet of delivery pipe 14 connects with gathering ground 13.
In the present embodiment, the substrate that slag filler district 8 is used is slag, filling thickness be less than 40cm, particle diameter be 4～
8cm；The substrate that slow release carbon source district 9 is used is waste wood block, and filling thickness is less than 40cm, and particle diameter is 3～5cm；Gravel filling
The substrate that district 10 is used is gravel, and filling thickness is less than 40cm, and particle diameter is 4～8cm.Described slag filler district 8, slow release carbon
The packing volume in packing area, source 9 and gravel filling district 10 is than for 2:2:2, and each packing area two compartment, totally 6 compartments.Upper strata
The area of coverage 11 filling substrate is gravel, and filling thickness is less than 10cm, beneficially Atmospheric Diffusion, and 11 kinds of clod cover district, upper strata
There is wetland plant 12.The biomass carbon source that slow release carbon source district 9 fills is waste wood head, rice straw, corn straw, corncob or withered
One or more in junk, by the combination of any ratio, freely to be arranged during described slow release carbon source input coefficient, it is impossible to compacting.
The working condition of the present embodiment system is:
(1) according to the requirement of above-mentioned compound iron enzymatic wet land biofilm system, build and process the process system that the water yield is 35L day
System.
(2) influent COD, the concentration average of TN and TP are respectively 250,54 and 8mg/L, and hydraulic detention time (HRT) sets
For 3d, iron ion concentrated solution periodically pumps into the slag filler district of wetland ecotourism membranous system by peristaltic pump, it is ensured that internal system
Iron concentration is between 1 to 2mg/L.
Result shows, the system of the present embodiment under the conditions of 15～20 DEG C, the removal of wetland ecotourism membranous system water outlet nitrogen phosphorus
Rate is all more than 85%.
Embodiment 2
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands of the present embodiment, it includes water-retention
Pond 1, store iron ion pond 2, water inlet peristaltic pump 3, enter iron ion peristaltic pump 4, water inlet pipe 5, enter iron ion pipe 6, water distribution area 7, slag
Packing area 8, slow release carbon source district 9, gravel filling district 10, the upper strata area of coverage 11, wetland plant 12, gathering ground 13 and delivery pipe 14；
Described slag filler district 8 is arranged on the left of slow release carbon source district 9, and gravel filling district 10 is arranged at slow release carbon source district 9
Right side, the water inlet of described water inlet peristaltic pump 3 connects with the outlet of cistern 1, the outlet of water inlet peristaltic pump 3 and water inlet
The water inlet connection of pipe 5, the outlet of water inlet pipe 5 connects with water distribution area 7, and water distribution area 7 is arranged on the left side of the upper strata area of coverage 11,
The right side of the upper strata area of coverage 11 is provided with gathering ground 13, and the upper strata area of coverage 11 is arranged on slag filler district 8, slow release carbon source district 9 and
The top in gravel filling district 10, the upper strata area of coverage 11 is planted wetland plant 12；Enter water inlet and the storage ferrum of iron ion peristaltic pump 4
The outlet connection in ion pond 2, the outlet entering iron ion peristaltic pump 4 connects with the water inlet entering iron ion pipe 6, enters iron ion
The outlet of pipe 6 connects with slag filler district 8；The outlet of delivery pipe 14 connects with gathering ground 13.
In the present embodiment, the substrate that slag filler district 8 is used is slag, filling thickness be less than 40cm, particle diameter be 4～
8cm；The substrate that slow release carbon source district 9 is used is waste wood block, and filling thickness is less than 40cm, and particle diameter is 3～5cm；Gravel filling
The substrate that district 10 is used is gravel, and filling thickness is less than 40cm, and particle diameter is 4～8cm.Described slag filler district 8, slow release carbon
The packing volume in packing area, source 9 and gravel filling district 10 is than for 2:2:2, and each packing area two compartment, totally 6 compartments.Upper strata
The area of coverage 11 filling substrate is gravel, and filling thickness is less than 10cm, beneficially Atmospheric Diffusion, and 11 kinds of clod cover district, upper strata
There is wetland plant 12.The biomass carbon source that slow release carbon source district 9 fills is waste wood head, rice straw, corn straw, corncob or withered
One or more in junk, by the combination of any ratio, freely to be arranged during described slow release carbon source input coefficient, it is impossible to compacting.
The working condition of the present embodiment system is:
(1) according to the requirement of above-mentioned compound iron enzymatic wet land biofilm system, build and process the process system that the water yield is 35L day
System.
(2) influent COD, the concentration average of TN and TP are respectively 250,54 and 8mg/L, fixing HRT, and iron ion concentrated solution leads to
Cross peristaltic pump and periodically pump into the slag filler district of wetland ecotourism membranous system, it is ensured that internal system iron concentration is at 3 to 5mg/L
Between.
Result shows, the system of the present embodiment under the conditions of 15～20 DEG C, the removal of wetland ecotourism membranous system water outlet nitrogen phosphorus
Rate is all more than 90%.
Embodiment 3
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands of the present embodiment, it includes water-retention
Pond 1, store iron ion pond 2, water inlet peristaltic pump 3, enter iron ion peristaltic pump 4, water inlet pipe 5, enter iron ion pipe 6, water distribution area 7, slag
Packing area 8, slow release carbon source district 9, gravel filling district 10, the upper strata area of coverage 11, wetland plant 12, gathering ground 13 and delivery pipe 14；
Described slag filler district 8 is arranged on the left of slow release carbon source district 9, and gravel filling district 10 is arranged at slow release carbon source district 9
Right side, the water inlet of described water inlet peristaltic pump 3 connects with the outlet of cistern 1, the outlet of water inlet peristaltic pump 3 and water inlet
The water inlet connection of pipe 5, the outlet of water inlet pipe 5 connects with water distribution area 7, and water distribution area 7 is arranged on the left side of the upper strata area of coverage 11,
The right side of the upper strata area of coverage 11 is provided with gathering ground 13, and the upper strata area of coverage 11 is arranged on slag filler district 8, slow release carbon source district 9 and
The top in gravel filling district 10, the upper strata area of coverage 11 is planted wetland plant 12；Enter water inlet and the storage ferrum of iron ion peristaltic pump 4
The outlet connection in ion pond 2, the outlet entering iron ion peristaltic pump 4 connects with the water inlet entering iron ion pipe 6, enters iron ion
The outlet of pipe 6 extends to the front end in gravel filling district 10；The outlet of delivery pipe 14 connects with gathering ground 13.
In the present embodiment, the substrate that slag filler district 8 is used is slag, filling thickness be less than 40cm, particle diameter be 4～
8cm；The substrate that slow release carbon source district 9 is used is waste wood block, and filling thickness is less than 40cm, and particle diameter is 3～5cm；Gravel filling
The substrate that district 10 is used is gravel, and filling thickness is less than 40cm, and particle diameter is 4～8cm.Described slag filler district 8, slow release carbon
The packing volume in packing area, source 9 and gravel filling district 10 is than for 2:2:2, and each packing area two compartment, totally 6 compartments.Upper strata
The area of coverage 11 filling substrate is gravel, and filling thickness is less than 10cm, beneficially Atmospheric Diffusion, and 11 kinds of clod cover district, upper strata
There is wetland plant 12.The biomass carbon source that slow release carbon source district 9 fills is waste wood head, rice straw, corn straw, corncob or withered
One or more in junk, by the combination of any ratio, freely to be arranged during described slow release carbon source input coefficient, it is impossible to compacting.
The working condition of the present embodiment system is:
(1) according to the requirement of above-mentioned compound iron enzymatic wet land biofilm system, build and process the process system that the water yield is 35L day
System.
(2) influent COD, the concentration average of TN and TP are respectively 250,54 and 8mg/L, fixing HRT, and iron ion concentrated solution leads to
Cross peristaltic pump and periodically pump into the gravel filling district of wetland ecotourism membranous system, it is ensured that internal system iron concentration is at 1 to 2mg/L
Between.
Result shows, the system of the present embodiment under the conditions of 15～20 DEG C, the removal of wetland ecotourism membranous system water outlet nitrogen phosphorus
Rate is all more than 80%.
Embodiment described above is to be described the preferred embodiment of the present invention, not enters the scope of the present invention
Row limits, on the premise of designing spirit without departing from the present invention, and this area ordinary skill technical staff technical side to the present invention
Various deformation that case is made and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (10)
1. the compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands, it is characterised in that it includes cistern
(1), store iron ion pond (2), water inlet peristaltic pump (3), enter iron ion peristaltic pump (4), water inlet pipe (5), enter iron ion pipe (6), cloth
Pool (7), slag filler district (8), slow release carbon source district (9), gravel filling district (10), the upper strata area of coverage (11), wetland plant
(12), gathering ground (13) and delivery pipe (14)；
Described slag filler district (8) is arranged at left side, slow release carbon source district (9), and gravel filling district (10) are arranged at slow release carbon source district
(9) right side, the water inlet of described water inlet peristaltic pump (3) connects with the outlet of cistern (1), going out of water inlet peristaltic pump (3)
The mouth of a river connects with the water inlet of water inlet pipe (5), and the outlet of water inlet pipe (5) connects with water distribution area (7), and water distribution area (7) is arranged on
The left side of the upper strata area of coverage (11), the right side of the upper strata area of coverage (11) is provided with gathering ground (13), and the upper strata area of coverage (11) is arranged
In slag filler district (8), slow release carbon source district (9) and the top of gravel filling district (10), the upper strata area of coverage plants wetland on (11)
Plant (12)；The water inlet entering iron ion peristaltic pump (4) connects with the outlet storing iron ion pond (2), enters iron ion peristaltic pump
(4) outlet connects with the water inlet entering iron ion pipe (6), enters the outlet of iron ion pipe (6) with slag filler district (8) even
Logical；The outlet of delivery pipe (14) connects with gathering ground (13).
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands the most according to claim 1, it is special
Levying and be that the substrate that the slag filler in described slag filler district (8) is used is slag, slag thickness is less than 40cm, particle diameter
It is 4～8cm.
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands the most according to claim 1, it is special
Levy the iron concentration being in described compound iron enzymatic wet land biofilm system and maintain 1～5mg/L.
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands the most according to claim 1, it is special
Levy and be that the biomass carbon source that described slow release carbon source district (9) fills is waste wood head block, rice straw, corn straw, corncob
Being less than 40cm with one or more in litter by combination in any, filling thickness, particle diameter is 3～5cm.
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands the most according to claim 1, it is special
Levy and be in the biomass carbon source input coefficient in described slow release carbon source district (9) freely to arrange, be not compacted.
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands the most according to claim 1, it is special
Levying and be that the substrate that described gravel filling district (10) uses is gravel, filling thickness is less than 40cm, and particle diameter is 4～8cm.
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands the most according to claim 1, it is special
Levy be described slag filler district (8), slow release carbon source district (9) and gravel filling district (10) packing volume than for 2:2:2 or
2:1:3, and slag filler district (8), slow release carbon source district (9) and gravel filling district (10) be divided into two compartments.
A kind of compound iron enzymatic wet land biofilm system strengthening cryogenic nitrogen, phosphorus ligands the most according to claim 1, it is special
Levying and be that the substrate of the described upper strata area of coverage (11) is gravel, filling thickness is less than 10cm.
9. the method that a compound iron enzymatic wet land biofilm system is strengthened cryogenic nitrogen, gone dephosphorization, it is characterised in that use right
The compound iron enzymatic wet land biofilm system requiring 1 proceeds as follows:
Waste water in cistern (1) is pumped into water distribution area (7) by water inlet peristaltic pump (3) from the water inlet pipe (5) of system, stores simultaneously
Iron ion in iron ion pond (2) is pumped into gravel filling district by entering iron ion peristaltic pump (4) via entering iron ion pipe (6)
(10) front end；Waste water sequentially passes through slag packing area (8), slow release carbon source district (9) and gravel filling district (10) via water distribution area (7)
React, finally get rid of via delivery pipe (14), i.e. complete the described method strengthened cryogenic nitrogen, go dephosphorization.
A kind of compound iron enzymatic wet land biofilm system the most according to claim 9 is strengthened cryogenic nitrogen, is gone to the side of dephosphorization
Method, it is characterised in that the iron concentration in described compound iron enzymatic wet land biofilm system maintains 1～5mg/L.
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