CN109231451A - A kind of depth denitrification filter pool strengthened based on electron shuttle body and internal ferrikinetics - Google Patents

A kind of depth denitrification filter pool strengthened based on electron shuttle body and internal ferrikinetics Download PDF

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CN109231451A
CN109231451A CN201811267343.9A CN201811267343A CN109231451A CN 109231451 A CN109231451 A CN 109231451A CN 201811267343 A CN201811267343 A CN 201811267343A CN 109231451 A CN109231451 A CN 109231451A
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denitrification
ferrikinetics
backwash
sludge
inorganic mineral
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CN109231451B (en
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宋新山
司志浩
谷琪
蒋兴
蒋兴一
王闻婷
王逸飞
赵雨枫
王宇晖
曹新
赵晓祥
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Donghua University
National Dong Hwa University
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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
    • C02F3/2826—Anaerobic digestion processes using anaerobic filters
    • 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
    • C02F3/005—Combined electrochemical biological processes
    • 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
    • C02F3/2866—Particular arrangements for anaerobic reactors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/15—N03-N
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/16—Total nitrogen (tkN-N)
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/14—Maintenance of water treatment installations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/06—Nutrients for stimulating the growth of microorganisms

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  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The present invention provides a kind of depth denitrification filter pools strengthened based on electron shuttle body and internal ferrikinetics, belong to technical field of sewage.It is characterized in that, including denitrification filter pool main body, carbon source and humus replenishment system and backwash-sludge drainage system, the denitrification filter pool main body includes the water inlet water distribution area set gradually from top to bottom, ferrikinetics denitrification room, inorganic mineral wool block filter layer, soft-filler treatment region and water outlet natural reaeration region, carbon source and humus replenishment system are connected with water inlet water distribution area, and backwash-sludge drainage system is connected with ferrikinetics denitrification room, inorganic mineral wool block filter layer and soft-filler treatment region respectively.The present invention is based on the anaerobic denitrifying systems of electron shuttle body and internal ferrikinetics, provide the electron donor except carbon source for denitrification process, promote the electron transmission efficiency of biochemical process, have not only improved system denitrification ability, but also reduce the operating cost of system.

Description

A kind of depth denitrification filter pool strengthened based on electron shuttle body and internal ferrikinetics
Technical field
The invention belongs to water-treatment technology field, it is related to bacteria filter system depth-averaged model technology, more particularly to a kind of The depth denitrification filter pool strengthened based on electron shuttle body and internal ferrikinetics.
Background technique
A kind of classical field formalism of the biofilter as bioreactor, in city domestic sewage, Rural Waste Water and Industry Waste It is used widely in advanced treating field.Denitrification bio-filter is improved on the basis of biological aerated filter, by with In sewage deep denitrogenation processing, the factors such as structure design, the setting of technological parameter and filtrate are to influence denitrification filter pool denitrogenation effect The key factor of rate.Compared to physical-chemical process denitrogenation, not only nitric efficiency is high for denitrification bio-filter, also has operation and management The lower advantage of cost.
Filtrate is the core component of biofilter, and in general, the removal of pollutant relies primarily on filter tank media table The biochemical action of biomembrane in face and gap.Denitrification bio-filter is mostly big with specific surface area and porosity and retaining power is strong Inorganic material based on.Inorganic mineral wool surface Zeta potential is higher, and it is micro- that adsorption ability is conducive to by force function in filter tank The rapid biofilm of biology.Sponge iron is also known as direct reduced iron, cheap from a wealth of sources, can not only pass through electrochemical process Rapid deoxygenation, anaerobic environment needed for maintaining denitrification, is also used as denitrification electron donor medium and NO3 -Chemistry occurs for-N Denitrification, its own is converted into Fe2+It afterwards can further be NO under the mediation of iron bacteria3- N relies on sections oxidation process and provides Electronics promotes NO3The biological denitrification of-N.In addition, hydrogen autotrophic denitrification may be implemented in the gas-evolving electrodes of sponge iron.
It containing groups such as quinonyl, phenolic group in humus, thus can be used as electron shuttle body, accelerate electronics in microorganism and electricity The biochemical reaction rate based on electron transmission is greatly improved in transmitting between sub- receptor, therefore can promote to pollute in environment The biodegradation rate of object.
Types carbon sources and dosage are one of the key factor for influencing denitrification efficiency, methanol, sodium acetate, glucose conduct Denitrifying carbon source is widely used, but in engineer application merely by carbon source as electron donor will lead to run at This height, the strong reducing property of sponge iron can be NO3 -The reduction of-N provides the electron donor except carbon source, the Fe of release2+In iron It can also serve as electron donor under the mediation of oxidation bacteria to participate in during denitrification denitrogenation.Fe0、Fe2+Make jointly with carbon source For NO3 -There is synergistic effect when the electron donor of-N reduction, while reducing carbon source consumption, significantly improves nitric efficiency.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of depths strengthened based on electron shuttle body and internal ferrikinetics Spend denitrification filter pool.
In order to solve the above-mentioned technical problems, the present invention provides a kind of based on electron shuttle body and internal ferrikinetics reinforcing Depth denitrification filter pool, which is characterized in that including denitrification filter pool main body, carbon source and humus replenishment system and backwash-row Mud system, the denitrification filter pool main body includes the water inlet water distribution area set gradually from top to bottom, ferrikinetics denitrification room, inorganic Mineral wool block filter layer, soft-filler treatment region and water outlet natural reaeration region, carbon source and humus replenishment system and water inlet water distribution area phase Even, backwash-sludge drainage system respectively with ferrikinetics denitrification room, inorganic mineral wool block filter layer and soft-filler treatment region phase Even.
Preferably, the denitrification filter pool main body uses upstream water distribution, and sewage is from the bottom to top respectively by water inlet cloth Pool, ferrikinetics denitrification room, inorganic mineral wool block filter layer, soft-filler treatment region and water outlet natural reaeration region.
Preferably, between the water inlet water distribution area and ferrikinetics denitrification room, ferrikinetics denitrification room and inorganic mineral Between cotton block filter layer, between inorganic mineral wool block filter layer and soft-filler treatment region, soft-filler treatment region and water outlet it is multiple The porous supporting layer of PVC is respectively provided between oxygen area.
It is highly preferred that the PVC porous supporting layer thickness 1-2cm, hole ratio 45-60%, aperture 0.8-1.5cm.
Preferably, the denitrification filter pool body height 1.9-2.4m.
Preferably, ferrikinetics denitrification room height 50-60cm, is provided with compounded mix, and the compounded mix is by nothing Machine mineral cotton yarn, sponge iron and humus are initially according to addition mass ratio (15-20): (3-5): (0.5-1.5) is formed, wherein sea Continuous iron packing material size 3-5mm, bulk density 1.5-1.8g/cm3。
Preferably, ferrikinetics denitrification room is in startup stage with Fe2+(main iron is thin containing a large amount of iron for the anaerobic sludge of culture Bacterium) it is seed sludge.
Preferably, the inorganic mineral wool block filtering layer height is 40-50cm, with the inorganic mineral of bulk of diameter 1-2cm Cotton is filled media, has the advantages that small flow resistance and is not easy to plug；The region is mainly used for denitrification filter pool lower part water Middle Fe (OH)3And Fe3O4Etc. filtering of the amounts of insoluble iron containing compound intercept, while having both heterotrophic denitrification function.
Preferably, the soft-filler treatment region height 80-100cm, using soft-filler as biofilm medium, to inorganic mine The filtered low concentration of NO of matter cotton3 -- N carries out advanced nitrogen processing, and further decreases CODcr.
Preferably, the water outlet natural reaeration region height 20-30cm, open topped, the soft-filler treatment region and water outlet The fixed inorganic mineral wool plate of 3-5cm thickness is covered on the porous supporting layer of PVC between natural reaeration region, as oxygen barrier filter layer, is guaranteed Anaerobic environment needed for soft-filler area denitrification, while the release of anaerobism exhaust gas is reduced, waste water passes through the porous supporting layer of the PVC By outlet pipe stream at the top of filter tank behind air reaeration area more than depth denitrification processing below and the porous supporting layer of the PVC Out.
Preferably, the carbon source and humus replenishment system include that carbon source and humus supplement tank, the carbon source and humic Matter supplements tank open topped, lower part Set scale flow valve, and is connected to water inlet pipe, can be using methanol or glucose etc. as anti-nitre Change carbon source, using humus as electron shuttle body, according to the NO in water inlet3 -- N concentration sets carbon source flow, and control C/N ratio is 3: 1-5:1。
Preferably, the backwash-sludge drainage system includes being respectively arranged on ferrikinetics denitrification room, inorganic mineral wool block mistake The backwash tube of filtering layer and soft-filler treatment region bottom, backwash tube connect sludge pipe, sludge pipe be separately connected air pump and Self-priming water pump, self-priming water pump connect mud discharging mouth.
It is highly preferred that being equipped with gate valve between the backwash tube and sludge pipe, it is equipped between air pump and sludge pipe anti- Control gate valve is rinsed, spoil disposal control gate valve is equipped between self-priming water pump and sludge pipe；When denitrification filter pool operates normally, recoil Wash-all gate valves closings of sludge drainage system, and air pump and Absorb Water air pump inoperative.
Preferably, the backwash-sludge drainage system will backwash real in the same system with two independent processes of spoil disposal Existing, the opening and closing of each gate valve makes to backwash two processes of spoil disposal in the alternate run and pipeline by controlling air pump, self priming pump Alternately, when denitrification filter pool hydraulic conductivity performance is decreased obviously, backwash-sludge drainage system operation concrete operations It include: to stop intaking and open all gate valves between sludge pipe and backwash tube；Sequence opens backwash control gate valve and air pump, Setting back washing strength is 15-20L/ (sm2), backwashing time is 5-8 minutes；Close air pump and backwash control lock Valve, sequence open spoil disposal control gate valve, and sludge is discharged from sludge pipe, is then turned off all gate valves in self-priming water pump and system.
Preferably, the backwash tube is the multiple tooth side structure rake of PVC or PPR material, only top drilling, aperture 0.3- 0.5cm is respectively arranged in the filtrate bottom of ferrikinetics denitrification room, inorganic mineral wool block filter layer and soft-filler treatment region.
The working principle of the invention is: in ferrikinetics reaction chamber, the strong reducing property using sponge iron is NO3 -The reduction of-N Electron donor is provided and realizes chemical denitrification；The Fe of sponge iron release is utilized under the mediation of iron-oxidizing bacteria2+As electron donor Carry out biological denitrification；With Fe0、Fe2+With carbon source collectively as NO3 -The electron donor of the reduction of-N, reduces denitrification process Carbon source consumption；Hydrogen autotrophic denitrification may be implemented in gas-evolving electrodes；Accelerate electronics in micro- life using humus as electron shuttle body Object and NO3 -The transmitting of-N significantly improves the denitrification denitrogenation efficiency based on electron transmission.Iron aoxidizes generated non-solubilised state Iron is trapped in inorganic mineral wool filter chamber, and waste water subsequently enters soft-filler room and carries out advanced nitrogen processing, and finally exists It is flowed out after reoxygenation by outlet pipe at the top of filter tank.
Compared with prior art, the beneficial effects of the present invention are:
Anaerobic denitrifying system based on electron shuttle body and internal ferrikinetics, provides except carbon source for denitrification process Electron donor, promote the electron transmission efficiency of biochemical process, not only improved system denitrification ability, but also reduce the fortune of system Row cost.
Detailed description of the invention
Fig. 1 is the device of the invention schematic diagram；
Fig. 2 is the porous supporting layer schematic diagram of PVC；
Fig. 3 is the schematic diagram of backwash tube of the present invention；
In figure: 1, intake pump；2, carbon source and humus supplement tank；3- proportional flow control valve；4, inlet valve；5, water inlet water distribution Pipe；6, inorganic mineral cotton yarn；7, sponge iron；8, backwash tube；9, inorganic mineral wool block；10, soft-filler；11, inorganic mineral Cotton plate；12, outlet pipe；13, the porous supporting layer of PVC；14, spoil disposal and air-flow backwash control valve；17, sludge pipe；18, spoil disposal control Check valve；19, self-priming water pump；20, mud discharging mouth；21, backwash gas flow control gate valve；22, air pump.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited Range.
Embodiment 1
A kind of depth denitrification filter pool strengthened based on electron shuttle body and internal ferrikinetics is present embodiments provided, including Denitrification filter pool main body, carbon source and humus replenishment system and backwash-sludge drainage system, the denitrification filter pool main body include from Under to above set gradually water inlet water distribution area, ferrikinetics denitrification room, inorganic mineral wool block filter layer, soft-filler treatment region and It is discharged natural reaeration region, carbon source and humus replenishment system to be connected with water inlet water distribution area, backwash-sludge drainage system is anti-with ferrikinetics respectively Nitrification room, inorganic mineral wool block filter layer are connected with soft-filler treatment region.The denitrification filter pool main body is spread using uplink Water, sewage is from the bottom to top respectively by water inlet water distribution area, ferrikinetics denitrification room, inorganic mineral wool block filter layer, soft-filler Treatment region and water outlet natural reaeration region.Between the water inlet water distribution area and ferrikinetics denitrification room, ferrikinetics denitrification room with it is inorganic Between mineral wool block filter layer, between inorganic mineral wool block filter layer and soft-filler treatment region, soft-filler treatment region with go out The porous supporting layer 13 of PVC is respectively provided between water natural reaeration region.
Specific structure is as shown in Figs. 1-3, comprising: the PVC denitrification filter pool of a height 190cm, internal diameter 30cm, in use Row undercurrent water distribution, sewage is from the bottom to top respectively by water inlet water distribution area, ferrikinetics denitrification room, inorganic mineral wool filter layer, soft Property filler treatment region and water outlet natural reaeration region；Between the water inlet water distribution area and ferrikinetics denitrification room, ferrikinetics denitrification room Between inorganic mineral wool block filter layer, between inorganic mineral wool block filter layer and soft-filler treatment region, soft-filler processing It is separated between area and water outlet natural reaeration region by the porous supporting layer 13 of PVC.The porous 13 thickness 1cm of supporting layer of the PVC, hole ratio 50%, aperture 0.8cm.
The carbon source replenishment system includes carbon source and humus supplement tank 2, and the carbon source and humus supplement 2 top of tank are spacious Mouthful, lower part Set scale flow valve 3, and be connected to water inlet pipe, it is equipped with mass ratio in the carbon source and humus supplement tank 2 The methanol of 50:1 and the mixture of humus, using methanol as denitrifying carbon source, using humus as electron shuttle body, according into NO in water3 -- N concentration sets carbon source flow, and guarantee C/N is 3:1.
The water inlet pipe both ends are separately connected intake pump 1 and water distribution pipe 3, and water inlet pipe is equipped with inlet valve 4.
The water distribution pipe 3 is set in water inlet water distribution area.
Ferrikinetics denitrification room height 50cm, is provided with compounded mix, compounded mix by inorganic mineral cotton yarn 6, Sponge iron 7 and humus are formed according to addition mass ratio 20:4:1, wherein 7 partial size 3-5mm of sponge iron, bulk density 1.6g/ cm3。
Ferrikinetics denitrification room is in startup stage with Fe2+The anaerobic sludge of culture is seed sludge (with 50mg/L's Ferrous sulfate Anaerobic culturel 3 days), supplement sludge quantity is the 1/10 of the ferrikinetics denitrification building volume.
The inorganic mineral wool block filtering layer height is 40cm, is with the blocky high-intensity inorganic mineral wool block 9 of diameter 1cm Filled media；The region is mainly used for Fe (OH) in the water of filter tank lower part3And Fe3O4Etc. amounts of insoluble iron containing the effective of compound Retention, while having both heterotrophic denitrification function.
The soft-filler treatment region height 80cm, using hydroformylation polyvinyl soft-filler 10 as biofilm medium, to inorganic more The filtered low concentration of NO of hole cotton3 -- N carries out advanced nitrogen processing.
The water outlet natural reaeration region height 20cm, open topped, the porous support of PVC in soft-filler area and water outlet natural reaeration region The inorganic mineral wool plate 11 of 5cm thickness is covered on layer 13, as oxygen barrier filter layer, anaerobism ring needed for guaranteeing soft-filler area denitrification Border, waste water are flowed out after depth denitrification and air reaeration by outlet pipe 12 at the top of filter tank.
Backwash-the sludge drainage system include be respectively arranged on ferrikinetics denitrification room, inorganic mineral wool block filter layer and The backwash tube 8 of soft-filler treatment region bottom, backwash tube 8 connect sludge pipe 17, and sludge pipe 17 is separately connected outside filter tank Air pump 22 and self-priming water pump 19, self-priming water pump 19 connect mud discharging mouth 20.
It is equipped with gate valve 14 between the backwash tube 8 and sludge pipe 17, is equipped between air pump 22 and sludge pipe 17 anti- Gas flow optimized gate valve 21 is rinsed, spoil disposal control gate valve 18 is equipped between self-priming water pump 19 and sludge pipe 17；Denitrification filter pool just Often when operation, all gate valves of backwash-sludge drainage system are closed, and air pump 22 does not work with self-priming water pump 19.
Backwash-the sludge drainage system will be backwashed and be realized in the same system with two independent processes of spoil disposal, be passed through The opening and closing of each gate valve makes to backwash two processes of spoil disposal in the alternate run and pipeline of control air pump 22 and self-priming water pump 19 Alternately.When denitrification filter pool hydraulic conductivity performance is decreased obviously, the concrete operations of system operation are as follows: (1) stop It intakes and opens all gate valves 14 between sludge pipe 17 and backwash tube 8；(2) sequence opens backwash gas flow control gate valve 21 and sky Air pump 22, setting backwash gas intensity of flow are 0.3L/ (sm2), backwashing time is 5 minutes；(3) air pump 22 and anti-is closed Gas flow optimized gate valve 21 is rinsed, sequence opens spoil disposal control gate valve 18 and self-priming water pump 19, sludge is discharged from mud discharging mouth, then Close all spoil disposals and air-flow backwash control valve 14, backwash gas flow control gate valve 21 and spoil disposal control gate valve 18.
The backwash tube 8 is the multiple tooth side structure rake of PPR material, and only top drilling, aperture 0.3cm are respectively arranged In ferrikinetics denitrification room, the filtrate bottom of inorganic mineral wool filter layer and soft-filler treatment region.
In use, using carbon source and humus replenishment system in water inlet supplementary carbon source and humus, ferrikinetics react In room, the strong reducing property using sponge iron is NO3 -The reduction of-N provides electron donor and realizes chemical denitrification；In iron-oxidizing bacteria Mediate the lower Fe using sponge iron release2+Biological denitrification is carried out as electron donor；With Fe0、Fe2+With carbon source collectively as NO3 -The electron donor of the reduction of-N reduces the carbon source consumption of denitrification process；Hydrogen autotrophic denitrification may be implemented in gas-evolving electrodes； Accelerate electronics in microorganism and NO using humus as electron shuttle body3 -The transmitting of-N makes the denitrification based on electron transmission Nitric efficiency significantly improves.Iron aoxidizes generated non-soluble iron and is trapped in inorganic mineral wool filter chamber, and waste water is subsequent Advanced nitrogen processing is carried out into soft-filler room, and is finally flowed out after reoxygenation at the top of filter tank by outlet pipe.
According to experimental result, in HLR=3.04m3/(m2D), influent COD cr 60mg/L, NO3 -- N 30mg/L condition Under, CODcr removal efficiency 83-90%, NO3 -It is 83-94% that-N removal rate, which is higher than 95%, TN removal efficiency,.

Claims (10)

1. a kind of depth denitrification filter pool strengthened based on electron shuttle body and internal ferrikinetics, which is characterized in that including anti-nitre Change filter tank main body, carbon source and humus replenishment system and backwash-sludge drainage system, the denitrification filter pool main body include from it is lower to On the water inlet water distribution area, ferrikinetics denitrification room, inorganic mineral wool block filter layer, soft-filler treatment region and the water outlet that set gradually Natural reaeration region, carbon source and humus replenishment system with water inlet water distribution area be connected, backwash-sludge drainage system respectively with ferrikinetics denitrification Room, inorganic mineral wool block filter layer are connected with soft-filler treatment region.
2. the depth denitrification filter pool strengthened as described in claim 1 based on electron shuttle body and internal ferrikinetics, feature are existed In, between the water inlet water distribution area and ferrikinetics denitrification room, ferrikinetics denitrification room and inorganic mineral wool block filter layer it Between, be all provided between inorganic mineral wool block filter layer and soft-filler treatment region, between soft-filler treatment region and water outlet natural reaeration region Set the porous supporting layer of PVC；The PVC porous supporting layer thickness 1-2cm, hole ratio 45-60%, aperture 0.8-1.5cm.
3. the depth denitrification filter pool strengthened as described in claim 1 based on electron shuttle body and internal ferrikinetics, feature are existed In the denitrification filter pool body height 1.9-2.4m.
4. the depth denitrification filter pool strengthened as described in claim 1 based on electron shuttle body and internal ferrikinetics, feature are existed In ferrikinetics denitrification room height 50-60cm is provided with compounded mix, and the compounded mix is by inorganic mineral cotton yarn, sea Continuous iron and humus are initially according to addition mass ratio (15-20): (3-5): (0.5-1.5) is formed, wherein sponge iron packing material size 3-5mm, bulk density 1.5-1.8g/cm3。
5. the depth denitrification filter pool strengthened as described in claim 1 based on electron shuttle body and internal ferrikinetics, feature are existed In ferrikinetics denitrification room is in startup stage with Fe2+The anaerobic sludge of culture is seed sludge.
6. the depth denitrification filter pool strengthened as described in claim 1 based on electron shuttle body and internal ferrikinetics, feature are existed In the inorganic mineral wool block filtering layer height is 40-50cm, using the inorganic mineral wool of bulk of diameter 1-2cm as filled media.
7. the depth denitrification filter pool strengthened as described in claim 1 based on electron shuttle body and internal ferrikinetics, feature are existed In, the water outlet natural reaeration region height 20-30cm, open topped, the porous supporting layer of PVC in soft-filler area and water outlet natural reaeration region The upper inorganic mineral wool plate of covering 3-5cm thickness, as oxygen barrier filter layer, anaerobic environment needed for guaranteeing soft-filler area denitrification, The release of anaerobism exhaust gas is reduced simultaneously, and waste water is by the depth denitrification processing below of the porous supporting layer of the PVC and the PVC It is flowed out behind air reaeration area more than porous supporting layer by outlet pipe at the top of filter tank.
8. the depth denitrification filter pool strengthened as described in claim 1 based on electron shuttle body and internal ferrikinetics, feature are existed In the carbon source and humus replenishment system include carbon source and humus supplement tank, and the carbon source and humus supplement tank top Opening, lower part Set scale flow valve, and be connected to water inlet pipe, using methanol or glucose as denitrifying carbon source, with humus As electron shuttle body, according to the NO in water inlet3 -- N concentration sets carbon source flow, and control C/N ratio is 3:1-5:1.
9. the depth denitrification filter pool strengthened as described in claim 1 based on electron shuttle body and internal ferrikinetics, feature are existed In the backwash-sludge drainage system includes being respectively arranged on ferrikinetics denitrification room, inorganic mineral wool block filter layer and soft-filler The backwash tube for the treatment of region bottom, backwash tube connect sludge pipe, and sludge pipe is separately connected air pump and self-priming water pump, Absorb Water Pump connection mud discharging mouth；It is equipped with gate valve between the backwash tube and sludge pipe, backwash is equipped between air pump and sludge pipe Control gate valve is equipped with spoil disposal control gate valve between self-priming water pump and sludge pipe；When denitrification filter pool operates normally, backwash- All gate valves of sludge drainage system are closed, and air pump and Absorb Water air pump inoperative；Backwash-the sludge drainage system will backwash and row Two independent processes of mud are realized in the same system, each in the alternate run and pipeline by controlling air pump, self priming pump The opening and closing of gate valve makes to backwash two processes of spoil disposal alternately, and backwash-sludge drainage system operation concrete operations include: to stop It intakes and opens all gate valves between sludge pipe and backwash tube；Sequence opens backwash control gate valve and air pump, setting recoil Washing intensity is 15-20L/ (sm2), backwashing time is 5-8 minutes；Air pump and backwash control gate valve are closed, sequence is beaten Begin to rehearse mud control gate valve, and sludge is discharged from sludge pipe, is then turned off all gate valves in self-priming water pump and system.
10. the depth denitrification filter pool strengthened as claimed in claim 9 based on electron shuttle body and internal ferrikinetics, feature are existed In the backwash tube is the multiple tooth side structure rake of PVC or PPR material, only top drilling, aperture 0.3-0.5cm, respectively cloth It is placed in the filtrate bottom of ferrikinetics denitrification room, inorganic mineral wool block filter layer and soft-filler treatment region.
CN201811267343.9A 2018-10-29 2018-10-29 Deep denitrification filter based on electronic shuttle and internal iron circulation reinforcement Active CN109231451B (en)

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