CN106396097A - Autotrophic/heterotrophic denitrification-based integrated nitrogen removal apparatus and nitrogen removal method thereof - Google Patents
Autotrophic/heterotrophic denitrification-based integrated nitrogen removal apparatus and nitrogen removal method thereof Download PDFInfo
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- CN106396097A CN106396097A CN201611056241.3A CN201611056241A CN106396097A CN 106396097 A CN106396097 A CN 106396097A CN 201611056241 A CN201611056241 A CN 201611056241A CN 106396097 A CN106396097 A CN 106396097A
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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
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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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
- C02F3/005—Combined electrochemical biological 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
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
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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
- 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
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
Abstract
The invention discloses an autotrophic/heterotrophic denitrification-based integrated nitrogen removal apparatus and method, and belongs to the technical field of water treatment. A main reaction device is divided into an autotrophic denitrification area, a heterotrophic denitrification area and a buffer cavity. The device is provided with a liquid inlet, a liquid outlet and a gas outlet, and the liquid inlet is connected with the autotrophic denitrification area; the liquid outlet and the gas outlet are connected with the heterotrophic denitrification area; the device keeps the autotrophic denitrification area and the heterotrophic denitrification area mutually independent through the buffer cavity, and a micro-electrolysis filler layer and a sulfur/limestone filler layer are arranged in the autotrophic denitrification area; and a biomass vinasse layer is arranged in the heterotrophic denitrification area to improve the C/N ratio of wastewater and promote the heterotrophic denitrification nitrogen removal process. A solid-phase autotrophic denitrification coupled heterotrophic denitrification technology is adopted to remove nitrogen from the wastewater, so compared with routine single nitrogen removal technologies based on heterotrophic denitrification, the method disclosed in the invention has the advantages of high nitrogen removal efficiency, low cost and stable quality of outlet water.
Description
Technical field
The present invention relates to water-treatment technology field technical field, it is specifically related to the one based on autotrophy/heterotrophic denitrification
Change nitrogen rejection facility and its denitrogenation method.
Background technology
At present, wastewater treatment in China secondary biochemical effluent water quality is difficult to meet《Urban wastewater treatment firm pollutant emission mark
Accurate》(GB18918-2002) one-level A standard, especially total nitrogen, need the nitrate to water outlet to carry out deep removal.Biological anti-
Nitrification is a kind of cost-effective nitrate removal method, however, secondary effluent carbon source deficiency leads to denitrification denitrogenation efficiency low
Under.Supplement conventional carbon source not only relatively costly, and sometimes also can bring the unstable problem of effluent quality, therefore, exploitation is high
Effect, the biological denitrification nitrogen rejection facility of low consumption and method are particularly important.
It is strong that Chinese invention patent CN201410453651.6 discloses a kind of Novel sewage advanced treating biological denitrification
Change nitrogen rejection facility, this device is suitably changed the organic molecule structure in waste water, lifts its biodegradability by applying a magnetic field
While promote denitrification process, but for processing secondary biochemical effluent, still suffer from the not enough problem of carbon source.Chinese invention
Patent CN201410150882.X discloses a kind of autotrophic denitrification denitrogenation reactor, denitrification system and its denitrogenation method, should
System is by introducing guiding device in the reactor thus Xian Yang nitrosation reaction area, heterotrophic denitrification reaction are divided in reaction
Area and autotrophic denitrification reaction zone, achieve the combination of autotrophic denitrification and heterotrophic denitrification in same device, but
This device treatment effect is vulnerable to water currents, and the control for subregion and reaction condition is also complex.
Therefore, the present invention is directed to the deficiencies in the prior art, there is provided the integration based on autotrophy/heterotrophic denitrification
Nitrogen rejection facility and method.
Content of the invention
Present invention solves the technical problem that being：Overcome prior art center to be directed to secondary biochemical effluent carbon source deficiency to be brought
Biological denitrification nitric efficiency low, and it is unstable to need additionally to supplement the high cost that conventional carbon source brought, effluent quality
Problem, a kind of integration denitrification device of autotrophy/heterotrophic denitrification and its denitrogenation method are provided.The present invention is innovatively with solid phase
Autotrophic denitrification coupling heterotrophic denitrification technology carries out collaborative denitrogenation for core, and adds biomass wine in heterotrophic denitrification area
Poor solid-phase carbon source, enhances the enrichment of heterotrophic denitrifying Bacteria, and then enhances denitrification effect while improve waste water C/N ratio.
The technical scheme is that：Based on the integration denitrification device of autotrophy/heterotrophic denitrification, including regulating reservoir, enter
Water pump, primary response device, Buffer Pool, backwashing pump, aeration pump it is characterized in that, described primary response device includes autotrophic denitrification
Area, buffer cavity and heterotrophic denitrification area, described buffer cavity is located at described autotrophic denitrification area and described heterotrophic denitrification area
Between, functional areas are independent each other to make described autotrophic denitrification area and described heterotrophic denitrification area by described buffer cavity, institute
State described regulating reservoir to be connected with the inlet in described autotrophic denitrification area by intake pump；Described autotrophic denitrification area includes micro-
Electrolysis filler layer and sulfur/limestone filler layer, described micro-electrolysis stuffing layer is located at the bottom of described sulfur/limestone filler layer；Institute
The heterotrophic denitrification area stating includes water-locator and air vent, is sequentially filled distiller grains floor, quartz inside described heterotrophic denitrification area
Sand packing layer, supporting layer and filter block；Described Buffer Pool is connected with described heterotrophic denitrification area, and described liquid outlet is with Buffer Pool even
Connect；Described backwashing pump is located between Buffer Pool and heterotrophic denitrification area；Described aeration pump is connected with described heterotrophic denitrification area
Logical.
Further, in such scheme, described micro-electrolysis stuffing layer component meter by weight is by iron powder, carbon dust, Linesless charcoal
Black, mica powder, chromium powder, ground granulated blast furnace slag are according to (6 8):(2‐3):(0.2‐1):(0.1‐0.3):(0.5-3.5) mass ratio
Composition.After mix homogeneously, shaping of manufacturing paper with pulp on automatic forming device, pelletize, 80-140 DEG C of drying, form mixing class ball-shaped filling material.
Directly utilize the electron transmission that micro-electrolysis stuffing itself produces, the denitrification process for autotrophic denitrification bacterium provides required electricity
Son.
Further, described micro-electrolysis stuffing layer component meter by weight is by iron powder, carbon dust, white carbon, mica powder, chromium
Powder, ground granulated blast furnace slag are according to 7:2.5:0.6:0.2:2 mass ratio composition.
Further, in such scheme, the particle diameter of described iron powder is 0.01-0.03mm, and the particle diameter of described carbon dust is
0.5-0.7mm, the particle diameter of described white carbon is 0.02-0.04mm, and the particle diameter of described mica powder is 0.3-0.8mm, described chromium powder
Particle diameter be 0.05-0.07mm, the particle diameter of described ground granulated blast furnace slag is 0.1-0.5mm.
Further, in such scheme, the dispensing of contained Cosan and limestone in described sulfur/limestone filler layer
Than for 1-3:1 (volume ratio).
Further, in such scheme, in described distiller grains layer, dried distillers grain accounts for 40%-60%, Semen Tritici aestivi distiller grains account for 20%-
30%th, additive accounts for 1-2.5%, balance of maize alcohol stillage, and described additive is straw pulp fiber, and described straw pulp fiber is by phragmites communiss
Or bagasse makes.
The denitrogenation method of the described integration denitrification device based on autotrophy/heterotrophic denitrification, comprises the following steps：
Step one：Add pending waste water in regulating reservoir, water inlet pipe is connected with device, by intake pump 2 by waste water
It is transported in autotrophic denitrification area；
Step 2：Waste water first passes through the micro-electrolysis stuffing floor in autotrophic denitrification area, and micro-electrolysis stuffing layer is with fixed bed
Form fill ferrum carbon mix class ball-type filler, directly utilize micro-electrolysis stuffing itself generation electron transmission, be that autotrophy is anti-
The denitrification process of nitrifier provides required electronics；
Step 3：The waste water going out from micro-electrolysis stuffing laminar flow, enters into sulfur/limestone filler layer, with sulfur as electron donor
Carry out autotrophic denitrification denitrification process；Additionally, sulfur/limestone filler can be with efficiently concentrating autotrophic denitrification bacterium, after treatment
Waste water C/N ratio be further enhanced；
Step 4：Waste water after autotrophic denitrification area is processed, enters heterotrophic denitrification area through buffer cavity, then leads to
Cross water-locator and enter distiller grains layer, distiller grains, as a kind of solid biomass slow release carbon source, can significantly improve the C/N ratio in waste water, wine
Micronutrient element in grain can promote the activity of heterotrophic denitrifying Bacteria；Additionally, distiller grains layer is alternatively arranged as heterotrophic denitrifying Bacteria
Enrichment carrier；
Step 5：Contain abundant carbon source through the waste water of distiller grains layer, by quartz sand filler layer, carry out heterotrophic denitrification
Denitrification process, the waste water after final process is discharged from liquid outlet.
The invention has the beneficial effects as follows：
(1) the integration denitrification device based on autotrophy/heterotrophic denitrification of the present invention and denitrogenation method, by adding distiller grains
Biological solid-phase carbon source, takes full advantage of the waste material residue in alcohol production process, there is provided the approach of a recycling, with
Giving up, it is useless to control, and economic benefit is good.
(2) the integration denitrification device and method based on autotrophy/heterotrophic denitrification of the present invention, innovatively applies solid phase certainly
Foster denitrification couples heterotrophic denitrification denitrogenation technology, and water outlet total nitrogen stably reaches one-level emission standard A, cost reduce by 30% with
On.
Brief description
Fig. 1 is the structural representation of apparatus of the present invention.
Wherein, in figure：1st, regulating reservoir；2nd, intake pump；3rd, inlet；4th, micro-electrolysis stuffing layer；5th, sulfur/limestone filler
Layer；6th, primary response device；7th, autotrophic denitrification area；8th, buffer cavity；9th, heterotrophic denitrification area；10th, water-locator；11st, air vent；
12nd, distiller grains layer；13rd, air vent；14th, quartz sand filler layer；15th, supporting layer；16th, filter block；17th, Buffer Pool；18th, backwashing pump；
19th, aeration pump.
Specific embodiment
Embodiment 1
Based on the integration denitrification device of autotrophy/heterotrophic denitrification, including regulating reservoir 1, intake pump 2, primary response device 6,
Buffer Pool 17, backwashing pump 18, aeration pump 19 are it is characterised in that described primary response device 6 includes autotrophic denitrification area 7, buffering
Cavity 8 and heterotrophic denitrification area 9, described buffer cavity 8 be located at described autotrophic denitrification area 7 and described heterotrophic denitrification area 9 it
Between, functional areas are independent each other to make described autotrophic denitrification area 7 and described heterotrophic denitrification area 9 by described buffer cavity 8, institute
State described regulating reservoir 1 to be connected with the inlet 3 in described autotrophic denitrification area 7 by intake pump 2；Described autotrophic denitrification area 7
Including micro-electrolysis stuffing layer 4 and sulfur/limestone filler layer 5, described micro-electrolysis stuffing layer 4 is located at described sulfur/limestone filler layer 5
Bottom；Described heterotrophic denitrification area 9 includes water-locator 10 and air vent 11, inside described heterotrophic denitrification area 9 successively
Filling distiller grains layer 12, quartz sand filler layer 14, supporting layer 15 and filter block 16；Described Buffer Pool 17 and described heterotrophic denitrification area 9
It is connected, described liquid outlet 13 is connected with Buffer Pool 17；Described backwashing pump 18 be located at Buffer Pool 17 and heterotrophic denitrification area 9 it
Between；Described aeration pump 19 is connected with described heterotrophic denitrification area 9.
Wherein, described micro-electrolysis stuffing layer 4 component meter by weight is by iron powder, carbon dust, white carbon, mica powder, chromium powder, height
Stove slag powders are according to 6:2:0.2:0.1:0.5 mass ratio composition.After mix homogeneously, shaping of manufacturing paper with pulp on automatic forming device, make
Grain, 80 DEG C of dryings, form mixing class ball-shaped filling material.Directly utilize the electron transmission that micro-electrolysis stuffing itself produces, be that autotrophy is anti-
The denitrification process of nitrifier provides required electronics.The particle diameter of described iron powder is 0.01mm, and the particle diameter of described carbon dust is
0.5mm, the particle diameter of described white carbon is 0.02mm, and the particle diameter of described mica powder is 0.3mm, and the particle diameter of described chromium powder is
0.05mm, the particle diameter of described ground granulated blast furnace slag is 0.1mm.Contained Cosan and limestone in described sulfur/limestone filler layer 5
Charge ratio be 1:1 (volume ratio).In described distiller grains layer 12, dried distillers grain accounts for 40%, Semen Tritici aestivi distiller grains and accounts for 20%, additive and account for
1%th, balance of maize alcohol stillage, described additive is straw pulp fiber, and described straw pulp fiber is made up of phragmites communiss.
Process certain secondary effluent of municipal sewage plant, waste water quality with this device：NH4 +-N：4-10mg/L、TN：30-
45mg/L、TP：0.8-1.1mg/L、SS：22-30mg/L, pH value：6-8,26 DEG C -30 DEG C of temperature.Denitrogenation method includes following step
Suddenly：
Step one：Add pending waste water in regulating reservoir 1, water inlet pipe is connected with device, by intake pump 2 by waste water
It is transported in autotrophic denitrification area 7；
Step 2：Waste water first passes through the micro-electrolysis stuffing floor 4 in autotrophic denitrification area 7, and micro-electrolysis stuffing layer 4 is with fixation
The form of bed fills the filler that ferrum carbon mixes class ball-type, directly utilizes the electron transmission that micro-electrolysis stuffing itself produces, is autotrophy
The denitrification process of denitrifying bacterium provides required electronics；
Step 3：The waste water flowing out from micro-electrolysis stuffing layer 4, enters into sulfur/limestone filler layer 5, is supplied with sulfur for electronics
Body carries out autotrophic denitrification denitrification process；Additionally, sulfur/limestone filler can be with efficiently concentrating autotrophic denitrification bacterium, through processing
Waste water C/N ratio afterwards is further enhanced；
Step 4：Waste water after autotrophic denitrification area 7 is processed, enters heterotrophic denitrification area 9 through buffer cavity 8,
Again distiller grains layer 12 is entered by water-locator 10, distiller grains, as a kind of solid biomass slow release carbon source, can significantly improve in waste water
C/N ratio, the micronutrient element in distiller grains can promote the activity of heterotrophic denitrifying Bacteria；Additionally, distiller grains layer to be alternatively arranged as heterotrophism anti-
The enrichment carrier of nitrifier；
Step 5：Contain abundant carbon source through the waste water of distiller grains layer 12, by quartz sand filler layer 14, carry out heterotrophism anti-
The Nitrification, the waste water after final process is discharged from liquid outlet 13.
This autotrophy/heterotrophic denitrification integrated apparatus stably reach the discharge of one-level A through continuous operation in 256 days, water outlet total nitrogen
Standard (≤15mg/L), carbon source cost reduces by 38%.
Embodiment 2
Based on the integration denitrification device of autotrophy/heterotrophic denitrification, including regulating reservoir 1, intake pump 2, primary response device 6,
Buffer Pool 17, backwashing pump 18, aeration pump 19 are it is characterised in that described primary response device 6 includes autotrophic denitrification area 7, buffering
Cavity 8 and heterotrophic denitrification area 9, described buffer cavity 8 be located at described autotrophic denitrification area 7 and described heterotrophic denitrification area 9 it
Between, functional areas are independent each other to make described autotrophic denitrification area 7 and described heterotrophic denitrification area 9 by described buffer cavity 8, institute
State described regulating reservoir 1 to be connected with the inlet 3 in described autotrophic denitrification area 7 by intake pump 2；Described autotrophic denitrification area 7
Including micro-electrolysis stuffing layer 4 and sulfur/limestone filler layer 5, described micro-electrolysis stuffing layer 4 is located at described sulfur/limestone filler layer 5
Bottom；Described heterotrophic denitrification area 9 includes water-locator 10 and air vent 11, inside described heterotrophic denitrification area 9 successively
Filling distiller grains layer 12, quartz sand filler layer 14, supporting layer 15 and filter block 16；Described Buffer Pool 17 and described heterotrophic denitrification area 9
It is connected, described liquid outlet 13 is connected with Buffer Pool 17；Described backwashing pump 18 be located at Buffer Pool 17 and heterotrophic denitrification area 9 it
Between；Described aeration pump 19 is connected with described heterotrophic denitrification area 9.
Wherein, described micro-electrolysis stuffing layer 4 component meter by weight is by iron powder, carbon dust, white carbon, mica powder, chromium powder, height
Stove slag powders are according to 7:2.5:0.6:0.2:2 mass ratio composition.After mix homogeneously, shaping of manufacturing paper with pulp on automatic forming device, make
Grain, 80-140 DEG C of drying, form mixing class ball-shaped filling material.Directly utilize the electron transmission that micro-electrolysis stuffing itself produces, be certainly
The denitrification process of foster denitrifying bacterium provides required electronics.The particle diameter of described iron powder is 0.02mm, and the particle diameter of described carbon dust is
0.6mm, the particle diameter of described white carbon is 0.03mm, and the particle diameter of described mica powder is 0.65mm, and the particle diameter of described chromium powder is
0.06mm, the particle diameter of described ground granulated blast furnace slag is 0.3mm.Contained Cosan and limestone in described sulfur/limestone filler layer 5
Charge ratio be 2:1 (volume ratio).In described distiller grains layer 12, dried distillers grain accounts for 50%, Semen Tritici aestivi distiller grains and accounts for 25%, additive and account for
1.75%th, balance of maize alcohol stillage, described additive is straw pulp fiber, and described straw pulp fiber is made up of phragmites communiss.
Process certain secondary effluent of municipal sewage plant, waste water quality with this device：NH4 +-N：3-5mg/L、TN：45-
70mg/L、TP：0.4-1.1mg/L, pH value：6.5-7.0,18 DEG C -25 DEG C of temperature.Denitrogenation method is as follows：
Step one：Add pending waste water in regulating reservoir 1, water inlet pipe is connected with device, by intake pump 2 by waste water
It is transported in autotrophic denitrification area 7；
Step 2：Waste water first passes through the micro-electrolysis stuffing floor 4 in autotrophic denitrification area 7, and micro-electrolysis stuffing layer 4 is with fixation
The form of bed fills the filler that ferrum carbon mixes class ball-type, directly utilizes the electron transmission that micro-electrolysis stuffing itself produces, is autotrophy
The denitrification process of denitrifying bacterium provides required electronics；
Step 3：The waste water flowing out from micro-electrolysis stuffing layer 4, enters into sulfur/limestone filler layer 5, is supplied with sulfur for electronics
Body carries out autotrophic denitrification denitrification process；Additionally, sulfur/limestone filler can be with efficiently concentrating autotrophic denitrification bacterium, through processing
Waste water C/N ratio afterwards is further enhanced；
Step 4：Waste water after autotrophic denitrification area 7 is processed, enters heterotrophic denitrification area 9 through buffer cavity 8,
Again distiller grains layer 12 is entered by water-locator 10, distiller grains, as a kind of solid biomass slow release carbon source, can significantly improve in waste water
C/N ratio, the micronutrient element in distiller grains can promote the activity of heterotrophic denitrifying Bacteria；Additionally, distiller grains layer to be alternatively arranged as heterotrophism anti-
The enrichment carrier of nitrifier；
Step 5：Contain abundant carbon source through the waste water of distiller grains layer 12, by quartz sand filler layer 14, carry out heterotrophism anti-
The Nitrification, the waste water after final process is discharged from liquid outlet 13.
Process through autotrophy/heterotrophic denitrification integrated apparatus, continuous operation 9 months, water outlet total nitrogen concentration 7.1-9.6mg/
L, stably reaches one-level emission standard A, and carbon source cost reduces by 46%.
Embodiment 3
Based on the integration denitrification device of autotrophy/heterotrophic denitrification, including regulating reservoir 1, intake pump 2, primary response device 6,
Buffer Pool 17, backwashing pump 18, aeration pump 19 are it is characterised in that described primary response device 6 includes autotrophic denitrification area 7, buffering
Cavity 8 and heterotrophic denitrification area 9, described buffer cavity 8 be located at described autotrophic denitrification area 7 and described heterotrophic denitrification area 9 it
Between, functional areas are independent each other to make described autotrophic denitrification area 7 and described heterotrophic denitrification area 9 by described buffer cavity 8, institute
State described regulating reservoir 1 to be connected with the inlet 3 in described autotrophic denitrification area 7 by intake pump 2；Described autotrophic denitrification area 7
Including micro-electrolysis stuffing layer 4 and sulfur/limestone filler layer 5, described micro-electrolysis stuffing layer 4 is located at described sulfur/limestone filler layer 5
Bottom；Described heterotrophic denitrification area 9 includes water-locator 10 and air vent 11, inside described heterotrophic denitrification area 9 successively
Filling distiller grains layer 12, quartz sand filler layer 14, supporting layer 15 and filter block 16；Described Buffer Pool 17 and described heterotrophic denitrification area 9
It is connected, described liquid outlet 13 is connected with Buffer Pool 17；Described backwashing pump 18 be located at Buffer Pool 17 and heterotrophic denitrification area 9 it
Between；Described aeration pump 19 is connected with described heterotrophic denitrification area 9.
Wherein, described micro-electrolysis stuffing layer 4 component meter by weight is by iron powder, carbon dust, white carbon, mica powder, chromium powder, height
Stove slag powders are according to 8:3:1:0.3:3.5 mass ratio composition.After mix homogeneously, shaping of manufacturing paper with pulp on automatic forming device, pelletize,
140 DEG C of dryings, form mixing class ball-shaped filling material.Directly utilize the electron transmission that micro-electrolysis stuffing itself produces, be the anti-nitre of autotrophy
The denitrification process changing bacterium provides required electronics.The particle diameter of described iron powder is 0.03mm, and the particle diameter of described carbon dust is 0.7mm,
The particle diameter of described white carbon is 0.04mm, and the particle diameter of described mica powder is 0.8mm, and the particle diameter of described chromium powder is 0.07mm, described
The particle diameter of ground granulated blast furnace slag is 0.5mm.In described sulfur/limestone filler layer 5, the charge ratio of contained Cosan and limestone is
3:1 (volume ratio).In described distiller grains layer 12 dried distillers grain account for 60%, Semen Tritici aestivi distiller grains account for 30%, additive account for 2.5%, balance of
Maize alcohol stillage, described additive is straw pulp fiber, and described straw pulp fiber is made up of bagasse.
Process certain secondary effluent of municipal sewage plant, waste water quality with this device：NH4 +-N：5-8mg/L、TN：50-
60mg/L、TP：0.9-1.4mg/L, pH value：7～8,19 DEG C～23 DEG C of temperature.Denitrogenation method comprises the following steps：
Step one：Add pending waste water in regulating reservoir 1, water inlet pipe is connected with device, by intake pump 2 by waste water
It is transported in autotrophic denitrification area 7；
Step 2：Waste water first passes through the micro-electrolysis stuffing floor 4 in autotrophic denitrification area 7, and micro-electrolysis stuffing layer 4 is with fixation
The form of bed fills the filler that ferrum carbon mixes class ball-type, directly utilizes the electron transmission that micro-electrolysis stuffing itself produces, is autotrophy
The denitrification process of denitrifying bacterium provides required electronics；
Step 3：The waste water flowing out from micro-electrolysis stuffing layer 4, enters into sulfur/limestone filler layer 5, is supplied with sulfur for electronics
Body carries out autotrophic denitrification denitrification process；Additionally, sulfur/limestone filler can be with efficiently concentrating autotrophic denitrification bacterium, through processing
Waste water C/N ratio afterwards is further enhanced；
Step 4：Waste water after autotrophic denitrification area 7 is processed, enters heterotrophic denitrification area 9 through buffer cavity 8,
Again distiller grains layer 12 is entered by water-locator 10, distiller grains, as a kind of solid biomass slow release carbon source, can significantly improve in waste water
C/N ratio, the micronutrient element in distiller grains can promote the activity of heterotrophic denitrifying Bacteria；Additionally, distiller grains layer to be alternatively arranged as heterotrophism anti-
The enrichment carrier of nitrifier；
Step 5：Contain abundant carbon source through the waste water of distiller grains layer 12, by quartz sand filler layer 14, carry out heterotrophism anti-
The Nitrification, the waste water after final process is discharged from liquid outlet 13.
This autotrophy/heterotrophic denitrification integrated apparatus continuously ran through 305 days, water outlet total nitrogen concentration 8.6-11.2mg/L,
Stably reach one-level emission standard A, carbon source cost reduces by 42%.
What deserves to be explained is, to those skilled in the art, under present inventive concept and specific embodiment enlighten, energy
Enough some deformation directly derived or associate from the disclosure of invention and general knowledge, it will be recognized by those of ordinary skill in the art that
The replacement of in additive method, or prior art conventional known technology may also be employed, and the mutually different combination between feature etc.
Unsubstantiality change, equally can be employed, can realize the present invention description function and effect, no longer one by one citing launch
Describe in detail, belong to the scope of the present invention.
Claims (7)
1. the integration denitrification device based on autotrophy/heterotrophic denitrification, including regulating reservoir (1), intake pump (2), primary response device
(6), Buffer Pool (17), backwashing pump (18), aeration pump (19) are it is characterised in that described primary response device (6) inclusion autotrophy is anti-
Nitrification zone (7), buffer cavity (8) and heterotrophic denitrification area (9), described buffer cavity (8) is located at described autotrophic denitrification area (7)
And described heterotrophic denitrification area (9) between, described regulating reservoir (1) passes through intake pump (2) and described autotrophic denitrification area (7)
Inlet (3) connect；Described autotrophic denitrification area (7) includes micro-electrolysis stuffing floor (4) and sulfur/limestone filler floor (5),
Described micro-electrolysis stuffing layer (4) is located at the bottom of described sulfur/limestone filler layer (5)；Described heterotrophic denitrification area (9) includes
Water-locator (10) and air vent (11), are sequentially filled distiller grains floor (12), quartz sand filler inside described heterotrophic denitrification area (9)
Layer (14), supporting layer (15) and filter block (16)；Described Buffer Pool (17) is connected with described heterotrophic denitrification area (9), described go out liquid
Mouth (13) is connected with Buffer Pool (17)；Described backwashing pump (18) is located between Buffer Pool (17) and heterotrophic denitrification area (9)；Institute
State aeration pump (19) to be connected with described heterotrophic denitrification area (9).
2. the integration denitrification device based on autotrophy/heterotrophic denitrification as claimed in claim 1 is it is characterised in that described micro-
Electrolysis filler layer (4) component meter by weight is according to (6 by iron powder, carbon dust, white carbon, mica powder, chromium powder, ground granulated blast furnace slag
8):(2‐3):(0.2‐1):(0.1‐0.3):(0.5-3.5) mass ratio composition.
3. the integration denitrification device based on autotrophy/heterotrophic denitrification as claimed in claim 2 is it is characterised in that preferably,
Described micro-electrolysis stuffing layer (4) component meter by weight be by iron powder, carbon dust, white carbon, mica powder, chromium powder, ground granulated blast furnace slag by
According to 7:2.5:0.6:0.2:2 ratio composition.
4. the integration denitrification device based on autotrophy/heterotrophic denitrification as claimed in claim 2 is it is characterised in that described ferrum
The particle diameter of powder is 0.01-0.03mm, and the particle diameter of described carbon dust is 0.5-0.7mm, and the particle diameter of described white carbon is 0.02-
0.04mm, the particle diameter of described mica powder is 0.3-0.8mm, and the particle diameter of described chromium powder is 0.05-0.07mm, described ground granulated blast furnace slag
Particle diameter be 0.1-0.5mm.
5. the integration denitrification device based on autotrophy/heterotrophic denitrification as claimed in claim 1 it is characterised in that described sulfur/
In limestone filler layer (5), the charge ratio of contained Cosan and limestone is 1-3:1 (volume ratio).
6. the integration denitrification device based on autotrophy/heterotrophic denitrification as claimed in claim 1 is it is characterised in that described wine
In poor layer (12), dried distillers grain accounts for 40%-60%, Semen Tritici aestivi distiller grains account for 20%-30%, additive accounts for 1-2.5%, balance of Semen Maydiss
Distiller grains, described additive is straw pulp fiber.
7. the denitrogenation method of the integration denitrification device based on autotrophy/heterotrophic denitrification as described in claim 1-6, its feature
It is, comprise the following steps：
Step one：To adding pending waste water in regulating reservoir (1), water inlet pipe is connected with device, by intake pump (2) by waste water
It is transported in autotrophic denitrification area (7)；
Step 2：Waste water first passes through the micro-electrolysis stuffing floor (4) in autotrophic denitrification area (7), directly utilizes micro-electrolysis stuffing certainly
The electron transmission that body produces, the denitrification process for autotrophic denitrification bacterium provides required electronics；
Step 3：The waste water flowing out from micro-electrolysis stuffing layer (4), enters into sulfur/limestone filler layer (5), is supplied with sulfur for electronics
Body carries out autotrophic denitrification denitrification process；Additionally, sulfur/limestone filler can be with efficiently concentrating autotrophic denitrification bacterium, through processing
Waste water C/N ratio afterwards is further enhanced；
Step 4：Waste water after autotrophic denitrification area (7) are processed, enters heterotrophic denitrification area through buffer cavity (8)
(9), then by water-locator (10) enter distiller grains layer (12).
Step 5：Contain abundant carbon source through the waste water of distiller grains layer (12), by quartz sand filler layer (14), carry out heterotrophism anti-
The Nitrification, the waste water after final process is discharged from liquid outlet (13).
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