CN108467115A - Biological electro catalysis coupling contact aoxidizes denitrification filtering integral bioreactor - Google Patents
Biological electro catalysis coupling contact aoxidizes denitrification filtering integral bioreactor Download PDFInfo
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- CN108467115A CN108467115A CN201810392276.7A CN201810392276A CN108467115A CN 108467115 A CN108467115 A CN 108467115A CN 201810392276 A CN201810392276 A CN 201810392276A CN 108467115 A CN108467115 A CN 108467115A
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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
- C02F3/30—Aerobic and anaerobic 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
Abstract
The present invention provides a kind of biological electro catalysis coupling contact oxidation denitrification filtering integral bioreactor, which is characterized in that has：Biological electro catalysis pond, the first collecting-tank being sequentially arranged around biological electro catalysis pond, contact-oxidation pool, denitrification pond, the second collecting-tank and filtering ponds, wherein biological electro catalysis pond is used to carry out biological electro catalysis processing to pollutant, including：The electro-catalysis pond body of hollow columnar, the cathode being arranged along pond body inner wall, with the anode in the middle part of pond body, it is provided with water inlet in electro-catalysis pond body, first collecting-tank is connected with the top in biological electro catalysis pond, contact-oxidation pool is connected with the lower part of the first collecting-tank, for carrying out bio-contact oxidation degradation, it is carried out at the same time the nitration reaction of nitrogen, bottom is equipped with multiple aeration heads, and denitrification pond is connected with the top of contact-oxidation pool, for carrying out anti-nitration reaction, second collecting-tank is connected with the top in denitrification pond, and filtering ponds top is equipped with water outlet.
Description
Technical field
The invention belongs to printing and dyeing wastewater processing equipment fields, and in particular to a kind of anti-nitre of biological electro catalysis coupling contact oxidation
Change filtering integral bioreactor.
Background technology
Printing and dyeing industry is typical water consumption industry, and often processing 1t textiles needs 100~200t of water consumption, wherein 80%~90%
Become organic synthesis waste water after production process, and China is DYE PRODUCTION big country, the dyestuff produced throughout the year has 11 major class more than 500
A kind, about 300,000 tons of annual production capacity, accounts for 30% or more of world's dyestuff total output.
Currently, treatment of dyeing wastewater means both domestic and external are aided with Physical and chemical method based on bioanalysis, wherein connecing
Touch oxidizing process be widely used because of technical maturity, economical operation, but with printing and dyeing industry to it is anti-light solution, anti-oxidant, antibiont
Degradation direction is developed, the presence of the hardly degraded organic substances such as polyvinyl alcohol in waste water (PVA) slurry, artificial silk alkali object, New-type adjuvant
So that the biodegradability of dyeing waste water is relatively low, traditional contact oxidation method is difficult to reach effluent quality standard.And domestic and foreign scholars
It, which is a breakthrough technology, is found to the further investigation of bioelectrochemical system, combines the excellent of anaerobism and electrochemical method
Gesture removes the pollutant in dyeing waste water using bio-electrochemical process, is a kind of efficient and environmentally friendly means, but single pond
Operation is difficult to completely remove all contaminants in dyeing waste water.
Therefore, how to develop a kind of energy-efficient treatment of dyeing wastewater disposal technology becomes domestic and international researcher urgently
Problem to be solved.
Invention content
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of biological electro catalysis coupling contact oxygen
Change denitrification filtering integral bioreactor, removes the Recalcitrant chemicals in dyeing waste water using biological electro catalysis, improve
Wastewater biodegradability, makes water outlet be rapidly achieved bio-contact oxidation influent quality requirement, and subsequent touch oxidation and denitrification are strong
Change processing is able to Effec-tive Function.
The present invention to achieve the goals above, uses following scheme：
The present invention provides a kind of biological electro catalysis coupling contact oxidation denitrification filtering integral bioreactor, feature
It is have：Biological electro catalysis pond, the first collecting-tank, contact-oxidation pool, the denitrification being sequentially arranged around biological electro catalysis pond
Pond, the second collecting-tank and filtering ponds, wherein biological electro catalysis pond is used to carry out biological electro catalysis processing to pollutant, decomposes
Larger molecular organics, including：The electro-catalysis pond body of hollow columnar, along the cathode that pond body inner wall is arranged, and in the middle part of pond body
Anode, be provided with water inlet in electro-catalysis pond body, the first collecting-tank is connected with the top in biological electro catalysis pond, catalytic oxidation
Pond is connected with the lower part of the first collecting-tank, for carrying out bio-contact oxidation degradation, is carried out at the same time the nitration reaction of nitrogen, bottom
Equipped with multiple aeration heads, denitrification pond is connected with the top of contact-oxidation pool, for carrying out anti-nitration reaction, the second collecting-tank
It is connected with the top in denitrification pond, filtering ponds are equipped with water outlet, in the first collecting-tank, connect for carrying out mud-water separation, top
The bottom for touching oxidation pond, denitrification pond, the second collecting-tank and filtering ponds is equipped with mud discharging mouth.
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, it can also have the feature that：Biological electro catalysis pond, contact-oxidation pool, denitrification pond, filtering ponds, the first collecting-tank,
Volumetric ratio=1 of second collecting-tank：1~6：1~3：1~2：0.5~1：0.5~1.
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, it can also have the feature that：The pool wall of electro-catalysis pond body is equipped with the flow-out hole being connected with the first collecting-tank, should
The proportionate relationship of flow-out hole to the distance D1 and electro-catalysis pond body depth L1 of bottom of pond are D1：L1=16~19：20.
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, it can also have the feature that：First collecting-tank, contact-oxidation pool, denitrification pond, the second collecting-tank and filtering
Pond is sequentially connected, surrounds annular shape, and passes sequentially through first partition, second partition, third partition board, the 4th partition board and the 5th
Partition board is mutually separated, and the lower part of first partition is equipped with the first trepanning of rectangle, and the top of second partition is equipped with the second trepanning, third every
The top of plate is equipped with third trepanning, and the lower part of the 4th partition board is equipped with the 4th trepanning of rectangle.
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, it can also have the feature that：The area of first trepanning is 20~26 times of the second trepanning, and the second trepanning is opened with third
The proportionate relationship of the area equation in hole, the distance D2 and second partition height L2 of the second trepanning to second partition bottom surface is D2： L2
=15~19~20, third trepanning is lower than the second trepanning, the distance of third trepanning to the second trepanning and the ratio of third divider height
Example relationship is 2~5：40.
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, it can also have the feature that：Electro-catalysis pond body is hollow cylindrical, and water inlet is arranged in the bottom surface of electro-catalysis pond body
On, cathode is close to the setting of electro-catalysis pond body, is any one in carbon fiber felt, stainless (steel) wire, gas-diffusion electrode, is micro- life
Object provides carrier, and anode material is any one in high purity graphite carbon-point, carbon fiber brush, titanium-matrix electrode, biological electro catalysis pond
It also include the lid being arranged at the top of electro-catalysis pond body.
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, it can also have the feature that：Catalytic oxidation filler is filled in contact-oxidation pool, the catalytic oxidation filler is at curtain
Formula structure is gathered in pond, and density is 0.4~0.8m3Filler/m3。
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, it can also have the feature that：Biological electro catalysis pond, contact-oxidation pool, denitrification pond, filtering ponds, the first collecting-tank,
Volumetric ratio=1 of second collecting-tank：3~5：1~2：1~2：0.8~1：0.8~1, distance D1 and the electricity of flow-out hole to bottom of pond
The proportionate relationship for being catalyzed pond body depth L1 is D1：L1=35~38：40, it is more preferable that effect is set in this way.
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, it can also have the feature that：Water entering section, including：Intake pool, entrance is connected with intake pool, exports and water inlet
The inlet pipeline being connected, the intake pump being arranged on inlet pipeline, and the check valve in water inlet is set.
Preferably, denitrification filtering integral biological respinse is aoxidized in biological electro catalysis coupling contact according to the present invention
In device, can also have：Aeration portion, including：Multiple aeration heads, aerator, air inlet is connected with aerator, gas outlet with
The connected aerating pipelines of all aeration heads, the multiple aeration valves being mounted at each aeration head.
The effect of invention
The biological electro catalysis coupling contact oxidation denitrification filtering integral bioreactor of the present invention has the following advantages that：
1. being pre-processed using biological electro catalysis method, for the dyeing waste water of difficult for biological degradation, make sewage using electrolysis principle
Reaching catalytic oxidation influent quality requirement, the presence of microorganism reduces reaction overpotential, and operating cost is saved compared with electrochemical process,
Anode can be utilized to handle other waste waters simultaneously simultaneously；
2. gravity stream is run, ensures that the oxidation of biological electro catalysis coupling contact and anti-nitration reaction orderly carry out, ensure flow
Each pond body is flowed through from the bottom to top, and a pump need to be only set between intake pool and reactor, without separately setting elevator pump, is reduced
Power consumption reduces operating cost, reduces pumping station operation administration fee；
3. contact-oxidation pool and denitrification pond are all made of biofilm, the easy filming of composite filling changes film, strong shock resistance,
Attachment place is provided for microorganism, biomass is big, and food chain completely has longer sludge age, and sludge yield is low, after reduction
Continuous Treatment of Sludge burden；
4. being equipped with collecting-tank between pond body with equal and water quality and quantity, ensures that flow comes into full contact with filler from bottom to top, formed
Annular pulling flow type flow.
To sum up, bioreactor provided by the present invention, the decoloration for collecting dyeing waste water is denitrogenated, biological oxidation be separated by filtration for
One, using gravity stream continuous operation, the macromolecule contaminant in dyeing waste water of being degraded using bioelectrochemistry, contact-oxidation pool
Bio-contact oxidation degradation is carried out to organic pollutants, while the nitrogen and organic in water removal is removed with nitration denitrification process
Object, the suspension after oxidation are completed to be separated by solid-liquid separation by filtering ponds, and entire reactor for treatment is efficient, and low energy consumption, simple structure,
Operational management is convenient, high degree of automation.
Description of the drawings
Fig. 1 is the biological electro catalysis coupling contact oxidation denitrification filtering integral bioreactor involved in embodiment
Structural schematic diagram；
Fig. 2 is the biological electro catalysis coupling contact oxidation denitrification filtering integral bioreactor involved in embodiment
Vertical view；
Fig. 3 is the biological electro catalysis coupling contact oxidation denitrification filtering integral bioreactor involved in embodiment
Flow to schematic diagram；
Fig. 4 is the structural schematic diagram of the lid involved in embodiment；
Fig. 5 is the structural schematic diagram of five pieces of partition boards involved in embodiment；
Fig. 6 is the structural schematic diagram of the supporting plate involved in embodiment, wherein (a) is front view, it is (b) side view.
Specific implementation mode
Referring to the drawings to biological electro catalysis coupling contact according to the present invention oxidation denitrification filtering integral life
Object reactor is elaborated.
<Embodiment>
As illustrated in fig. 1 and 2, biological electro catalysis coupling contact oxidation denitrification filtering integral bioreactor 100, tool
Have：Biological electro catalysis pond 10, the first collecting-tank 20, contact-oxidation pool 30, denitrification pond 40, the second collecting-tank 50, filtering ponds 60,
Water entering section 70, aeration portion 80 and spoil disposal portion 90.
Biological electro catalysis pond 10, the first collecting-tank 20, contact-oxidation pool 30, denitrification pond 40, the second collecting-tank 50 and
Filtering ponds 60 surround cylindrical shape structure, and wherein biological electro catalysis pond 10 is located at middle part as inner region, internal diameter 120mm, wall thickness
5mm, high 400mm, available depth 370mm；First collecting-tank 20, contact-oxidation pool 30, denitrification pond 40, the second collecting-tank 50,
And filtering ponds 60 are then sequentially arranged and (are set gradually counterclockwise as shown in Fig. 2) work around biological electro catalysis pond 10
For outskirt, floor space is followed successively by 5：2：1： 1：1, the internal diameter 400mm of outskirt, wall thickness 5mm, high 400mm.
Biological electro catalysis pond 10 is used to carry out biological electro catalysis processing to pollutant, decomposes larger molecular organics, improves useless
Water biodegradability.In the present embodiment, 10 external voltage of biological electro catalysis pond is generally in 10~60mA, and hydraulic detention time is on the left sides 6h
It is right.Biological electro catalysis pond 10 includes electro-catalysis pond body 11, lid 12, cathode 13, anode 14 and water inlet 15.
11 hollow cylindrical of electro-catalysis pond body, as shown in figure 3, on the pool wall of electro-catalysis pond body 11, with the first collecting-tank 20
Side is mutually shared, flow-out hole 11a is equipped with, for allowing electro-catalysis pond body 11 to flow into the first collecting-tank 20.Flow-out hole 11a's is straight
Diameter is 10mm, and the proportionate relationship of the distance D1 and 11 depth L1 of electro-catalysis pond body at the center of flow-out hole 11a to bottom of pond are D1：L1
=16~19：20.In the present embodiment, D1=370mm, L1=400mm.
As shown in figs. 1 and 4, lid 12 is arranged is reserved with 2 hole 12a on the top of electro-catalysis pond body 11, lid 12,
For placing anode 14 and penetrating conducting wire.
As shown in Figure 1, the inner wall setting that cathode 13 is close to electro-catalysis pond body 11 can be with for providing carrier for microorganism
For carbon fiber felt, stainless (steel) wire, gas-diffusion electrode etc..In the present embodiment, the cathode 13 used is active carbon fiber felt, for length
Rectangular, size is 360mm × 380mm.
Anode 14 is located at the middle part of electro-catalysis pond body 11, can be high-purity graphite carbon stick, carbon fiber brush, titanium-matrix electrode etc..
In the present embodiment, the anode 14 used is 6 × 350mm of high purity graphite carbon-point Φ.
Cathode 13 and anode 14 are all connect by copper conductor A with external power supply B, with the ring of insulation at all metal exposures
Oxygen resin covers.
Water inlet 15 is arranged on the bottom surface of electro-catalysis pond body 11.
In electro-catalysis pond body 11, catalyst of the active microorganism as cathode 13, internal specific cell membrane egg
In vain, electronics may be implemented in solid electrode and intercellular transmission in the redox electron mediator of eucaryotic cell structure or solubility, drives
The generation that dynamic cathode 13 reacts, can reduce the overpotential of reaction, make cathode 13 that can be reached in the case where applied voltage is smaller
To the reduction potential of target dyestuff, target dyestuff is removed as the electron acceptor of cathode 13 by decoloration, using Asia in the present embodiment
Methyl blue is as target dyestuff.After biological electro catalysis is handled, it is relatively low that the oxidation operation of difficult for biological degradation resolves into toxicity
Substance, utilized convenient for the processing of contact-oxidation pool 30, while part CODCr is removed.
After tested, C/N is from 2：1 is reduced to 1：2, COD removal rates are stablized 70% or more, average out to 84.1%, methylene blue
(MB) removal rate is stablized 60% or more, and average removal rate 76.1% stablizes 70% or more, averagely the removal rate of nitrate nitrogen
It is 84.7%, ammonia nitrogen removal frank is stablized 10% or more, average out to 21.8%.
As shown in Figures 1 to 3, the first collecting-tank 20 is connected with the top in biological electro catalysis pond 10, plays cushioning effect, and
It can balanced water quality and quantity.
As shown in Fig. 2,3,5, contact-oxidation pool 30 is mutually separated with the first collecting-tank 20 by first partition 31, and by setting
It sets the first trepanning 31a in 31 lower part of first partition to be connected, for carrying out bio-contact oxidation degradation, is carried out at the same time the nitre of nitrogen
Change reaction.In the present embodiment, first partition 31 be width 130mm, high 400mm rectangular clapboard, the first trepanning 31a be long 90mm,
The rectangular opening of wide 20mm, apart from 31 bottom 20mm of first partition.
As shown in Figure 1, being filled with catalytic oxidation filler 32 in contact-oxidation pool 30, which passes through iron
The series connection of guide frame 33 forms curtain structure and gathers in pond, as microorganism carrier.Here, catalytic oxidation filler 32 is using imitative water
Straw plaited belt composite filling, polypropylene and vinylon material, tow is uniformly dispersed in sewage, large specific surface area, and easy filming is changed
Film.The density of catalytic oxidation filler 32 is 0.4~0.8m3Filler/m3, in the present embodiment, density 0.44m3Filler/m3.Sewage
In organic matter be attracted to the biofilm surface that a large amount of microorganisms inhabit first, and contacted with microbial cell surface, it is small
Molecular organic can be directed through cell wall and enter in microbial body, and larger molecular organics must be in exoenzyme-hydrolase
Under the action of, it is ingested in microbial body again after being broken down into small molecule, the removal of organic matter is completed in biomembrane.
It since catalytic oxidation filler 32 simulates natural waterweeds form, is not easy to receive and hides sludge, have can for tubular diameter when oxygenation
The advantages that denaturation, no blocking." polypropylene+vinylon " material keeps its hydrophilic, oleophylic, service life long, has well to bubble
Dissection and absorption resistance rise effect, hence it is evident that improving the residence time of air in water has storage oxygen function, and adsorption capacity is strong；Together
When due to being got excited by flow and air-flow, biomembrane on filler is constantly updated, and bioactivity is high, and mass-transfer efficiency is high.Therefore, should
Filler can improve water purification efficiency 70~80% than other fillers.Curtain designs, and is easily installed, and is not necessarily to Steel bar rack, saves significantly
Artificial and fee of material when installation is saved, simple and convenient service life is long.
As shown in Figures 1 to 3, denitrification pond 40 is mutually separated with contact-oxidation pool 30 by second partition 41, and passes through setting
The second trepanning 41a on 41 top of second partition is connected, for carrying out anti-nitration reaction.Denitrification is equipped in denitrification pond 40
Filler 42, which, which equally uses, imitates water plant braid formula composite filling, holding anaerobic environment in pond, attached on biomembrane
The amphimicrobe to waste water carry out denitrification, by contact-oxidation pool 30 be discharged in nitrate nitrogen be converted into nitrogen from
And realize the removal to nitrogen in dyeing waste water.In the present embodiment, second partition 41 is the rectangular clapboard of width 130mm, high 400mm,
Second trepanning 41a is the circular hole of diameter 10mm, 41 bottom 350mm of centre distance second partition.Second positions trepanning 41a exist
It is to ensure the volumetric ratio in biological electro catalysis pond 10 and contact-oxidation pool 30 1 at 350mm:Between 4~6, in the present embodiment
Volumetric ratio is 1：4.4.
Second collecting-tank 50 is mutually separated with denitrification pond 40 by third partition board 51, and by being arranged on third partition board 51
The third trepanning 51a in portion is connected.Second collecting-tank 50 is used for balanced water quality and quantity, while ensureing that waste water flows through pond from the bottom up
Body comes into full contact with filler.In the present embodiment, third partition board 51 is the rectangular clapboard of width 130mm, high 400mm, third trepanning
51a is the circular hole of diameter 10mm, and 51 bottom 320mm of centre distance third partition board, setting is to make biological electro catalysis pond in this way
10 and denitrification pond 40 volumetric ratio 1：Between 1~2, volumetric ratio is 1 in the present embodiment：1.6.
Filtering ponds 60 are mutually separated with the second collecting-tank 50 by the 4th partition board 61, and by being arranged in 61 lower part of the 4th partition board
The 4th trepanning 61a be connected.As shown in Figures 1 to 3, filtering ponds 60 are equipped with water outlet 62 for carrying out mud-water separation, top, with
Outlet pipe C is connected, outlet pipe C 270mms a height of from bottom, with 63 upper surface 30~50mm of distance of filtrate；The bottom of filtering ponds 60
It is used for back flush equipped with recoil 64 reversed flushing line of hole flushing.It is complete using grading quartz sand as filtrate 63 in filtering ponds 60
At the mud-water separation that denitrification pond 40 is discharged, suspended matter and liquid in separation water outlet.In the present embodiment, filter height 150
~180mm, filtering layer select the quartz sand of 0.3~1mm；It is supporting layer below filtering layer, is highly 30~50mm, selects 2~16mm
Quartz sand；From the quartz that placement supporting plate 65 as shown in FIG. 6 at 30~50mm of bottom is used for carrying supporting layer and filtering layer
Sand.In addition, be mutually separated by the 5th partition board 66 between filtering ponds 60 and the first collecting-tank 20, not apertured on the 5th partition board 66.And
And in the present embodiment, the size of the 4th partition board 61 and the 4th trepanning 61a are identical as first partition 31 and the first trepanning 31a, the
The size of five partition boards 66 is identical as the 4th partition board 61.
In above-mentioned first collecting-tank 20, contact-oxidation pool 30, denitrification pond 40, the second collecting-tank 50 and filtering ponds 60
Bottom be equipped with mud discharging mouth E.
As shown in Figure 1, water entering section 70 include intake pool 71, inlet pipeline 72, intake pump 73 and check valve (in figure not
It shows).The entrance of inlet pipeline 72 is connected with intake pool 71, exports and is connected with water inlet 15.Intake pump 73 setting into
In water lines 72.Check valve is arranged at water inlet 15, for preventing into aqueous reflux.
Aeration portion 80 includes multiple aeration heads 81, aerator 82, aerating pipelines 83 and multiple aeration valves (in figure
It is not shown)., aeration head 81 these aeration heads 81 are all disposed within the bottom of contact-oxidation pool 30, are dredged from close become along water (flow) direction, i.e.,
Packing density be along water (flow) direction decrescence, to keep aerobic environment in pond.Aerator 82 is used to supply for aeration head 81
Gas.The air inlet of aerating pipelines 83 is connected with aerator 82, and gas outlet is connected with all aeration heads 81.Aeration valve is mounted on
At each aeration head 81.
Spoil disposal portion 90 includes mud line 91 and mud valve (not shown).Mud valve is arranged in each mud discharging mouth
At E, and with mud line 91, to spoil disposal and emptying.
Based on the above structure, the workflow for the bioreactor 100 that the present embodiment is provided is：
Sewage from intake pool 71 under the castering action of intake pump 73 from 10 bottom water inlet 15 of biological electro catalysis pond into
Enter reactor, from bottom to top flow through pond body, electro-chemical activity microorganism drives as 13 catalyst of cathode in biological electro catalysis pond 10
The generation that dynamic cathode 13 reacts, promotes the progress of 14 oxidation reaction of anode, under conditions of adding 20mA voltages outside, makes cathode 13
Reach the reduction potential of target dyestuff, dyestuff is removed as the electron acceptor of cathode 13 by decoloration, the organic of difficult for biological degradation
Object oxygenolysis reaches the inflow requirement of contact-oxidation pool 30, while part COD at the lower substance of toxicityCrIt is removed.
Then, waste water flow to the first collecting-tank of outskirt 20 by 10 top flow-out hole 11a of biological electro catalysis pond, from first every
31 the first trepanning of lower part 31a of plate flows into contact-oxidation pool 30, is equipped with catalytic oxidation filler 32 in contact-oxidation pool 30, has biofilm
Soon, high treating effect, the advantages that anti impulsion load ability is strong, the waste water for being suitble to processing organic concentration high were both active in pond
Sludge has biomembrane, bottom of pond aeration head 81 to be oxygenated sewage again, and sewage is made in pond body to be in flow regime, biomembrane with
The activated sludge collective effect of suspension, organic pollutants are aoxidized, and organic nitrogen, which is nitrified, to be haved the function that purify waste water.
Then, the water outlet of contact-oxidation pool 30 goes out to flow to denitrification pond 40, anti-nitre through the second trepanning 41a on second partition 41
It is anaerobic environment to change in pond 40, and denitrifying bacteria is attached on denitrification filler 42, waste water denitrification under the action of biomembrane,
Complete nitrogen removal, and after the third trepanning 51a through 51 top of third partition board enter the second collecting-tank 50, then from the 4th
The 4th trepanning 61a of 61 lower part of partition board flows into filtering ponds 60, and the separation of solid and liquid of suspension waste water is completed under the filtration of filtrate 63,
Finally it is discharged by top water outlet 62.
In the present embodiment, bioreactor 100 handles dyeing waste water and is divided into two stages：
First stage is the reactor biofilm stage, in the incipient stage, first carries out the culture domestication in biological electro catalysis pond 10,
Biofilm is carried out to biological electro catalysis pond 10 using circulation wall embrane method, measures Inlet and outlet water nitrate nitrogen, nitrate nitrogen removal rate is cloudy 80% or more
Pole surface adheres to the more thick and solid biomembrane of one layer of black, stable operation one week, it is believed that completed biofilm.
Second stage be the treatment of dyeing wastewater stage, external current strength be the mA of 20mA~60, water inlet C/N be 2:1 He
Waste water initial concentration handles dyeing waste water under conditions of being 25mg/L.
For handling stimulated dye wastewater, 20~50mg/L of influent ammonium concentration, nitrate nitrogen 0~30mg/L of concentration are designed,
COD 100~140mg/L of concentration, methylene blue concentration 25mg/L.It is 20mA in external power supply B, water inlet organic carbon source is 50mg/L
Under conditions of, water outlet MB is about 4mg/L, and removal rate is 76% or more；Ammonia nitrogen is discharged to stablize in 5mg/L hereinafter, nitrate nitrogen is stablized
8mg/L hereinafter, COD be 50mg/L, reach plant emissions requirement.Intermediate 10 hydraulic detention time of biological electro catalysis pond is 6h, whole
The hydraulic detention time of a device is 50.4h.
Above example is only the illustration done to technical solution of the present invention.Bioelectricity according to the present invention is urged
Change coupling contact oxidation denitrification filtering integral bioreactor is not merely defined in described in the embodiment above
Structure, but it is subject to claim limited range.Those skilled in the art of the invention are on the basis of the embodiment
Any modify or supplement or equivalence replacement done, all in the claim range claimed of the present invention.
Claims (10)
1. a kind of biological electro catalysis coupling contact aoxidizes denitrification filtering integral bioreactor, which is characterized in that have：
Biological electro catalysis pond, the first collecting-tank, contact-oxidation pool, the denitrification being sequentially arranged around the biological electro catalysis pond
Pond, the second collecting-tank and filtering ponds,
Wherein, the biological electro catalysis pond is used to carry out biological electro catalysis processing to pollutant, decomposes larger molecular organics, packet
Contain：The electro-catalysis pond body of hollow columnar, it is described along the cathode that the pond body inner wall is arranged, and the anode in the middle part of pond body
It is provided with water inlet in electro-catalysis pond body,
First collecting-tank is connected with the top in the biological electro catalysis pond,
The contact-oxidation pool is connected with the lower part of first collecting-tank, for carrying out bio-contact oxidation degradation, simultaneously
The nitration reaction of nitrogen is carried out, bottom is equipped with multiple aeration heads,
The denitrification pond is connected with the top of the contact-oxidation pool, for carrying out anti-nitration reaction,
Second collecting-tank is connected with the top in the denitrification pond,
The filtering ponds are equipped with water outlet for carrying out mud-water separation, top.
2. biological electro catalysis coupling contact according to claim 1 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that：
Wherein, the biological electro catalysis pond, the contact-oxidation pool, the denitrification pond, the filtering ponds, described first are catchmented
Pond, second collecting-tank volumetric ratio=1：1~6：1~3：1~2：0.5~1：0.5~1.
3. biological electro catalysis coupling contact according to claim 1 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that：
Wherein, the pool wall of the electro-catalysis pond body is equipped with the flow-out hole being connected with first collecting-tank, which arrives
The proportionate relationship of the distance D1 of the bottom of pond and electro-catalysis pond body depth L1 is D1：L1=16~19：20.
4. biological electro catalysis coupling contact according to claim 1 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that：
Wherein, first collecting-tank, the contact-oxidation pool, the denitrification pond, second collecting-tank and the mistake
Filter tank is sequentially connected, surrounds annular shape, and pass sequentially through first partition, second partition, third partition board, the 4th partition board and
5th partition board is mutually separated,
The lower part of the first partition is equipped with the first trepanning of rectangle,
The top of the second partition is equipped with the second trepanning,
The top of the third partition board is equipped with third trepanning,
The lower part of 4th partition board is equipped with the 4th trepanning of rectangle.
5. biological electro catalysis coupling contact according to claim 4 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that：
Wherein, the area of first trepanning is 20~26 times of second trepanning,
The area equation of second trepanning and the third trepanning,
The proportionate relationship of second trepanning to the distance D2 and the second partition height L2 of the second partition bottom surface are D2：
L2=15~19~20,
The third trepanning is lower than second trepanning, the distance of the third trepanning to second trepanning and the third every
The proportionate relationship of plate height is 2~5：40.
6. biological electro catalysis coupling contact according to claim 1 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that：
Wherein, the electro-catalysis pond body is hollow cylindrical, and the water inlet is arranged on the bottom surface of the electro-catalysis pond body,
The cathode is close to the electro-catalysis pond body setting, is any one in carbon fiber felt, stainless (steel) wire, gas-diffusion electrode
Kind, carrier is provided for microorganism,
The anode material is any one in high purity graphite carbon-point, carbon fiber brush, titanium-matrix electrode,
The biological electro catalysis pond also includes the lid being arranged at the top of the electro-catalysis pond body.
7. biological electro catalysis coupling contact according to claim 1 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that：
Wherein, catalytic oxidation filler is filled in the contact-oxidation pool, which gathers at curtain structure
In pond, density is 0.4~0.8m3Filler/m3。
8. biological electro catalysis coupling contact according to claim 3 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that：
Wherein, the biological electro catalysis pond, the contact-oxidation pool, the denitrification pond, the filtering ponds, described first are catchmented
Pond, second collecting-tank volumetric ratio=1：3~5：1~2：1~2：0.8~1：0.8~1,
The proportionate relationship of the flow-out hole to the distance D1 and the electro-catalysis pond body depth L1 of bottom of pond are D1：L1=35~38：
40。
9. biological electro catalysis coupling contact according to claim 1 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that also having：
Water entering section, including：Intake pool, entrance are connected with the intake pool, export the water inlet pipe being connected with the water inlet
The intake pump on the inlet pipeline is arranged in road, and the check valve in the water inlet is arranged.
10. biological electro catalysis coupling contact according to claim 1 aoxidizes denitrification filtering integral bioreactor,
It is characterized in that also having：
Aeration portion, including：The multiple aeration head, aerator, air inlet is connected with the aerator, gas outlet with it is all
The connected aerating pipelines of the aeration head, the multiple aeration valves being mounted at each aeration head.
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| CN107032564A (en) * | 2017-06-21 | 2017-08-11 | 孙东光 | A kind of fecal treatment equipment and method |
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| CN107032564A (en) * | 2017-06-21 | 2017-08-11 | 孙东光 | A kind of fecal treatment equipment and method |
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