CN106830563A - Based on photoelectricity Fenton biological reinforced Waste Water Treatment and its method of wastewater treatment - Google Patents
Based on photoelectricity Fenton biological reinforced Waste Water Treatment and its method of wastewater treatment Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 60
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 36
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- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 4
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- 238000011109 contamination Methods 0.000 description 11
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical class ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 10
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- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 5
- -1 iron ion Chemical class 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
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Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Abstract
The invention discloses a kind of Waste Water Treatment and its method of wastewater treatment biological reinforced based on photoelectricity Fenton, it includes the preaeration tank (1), light electro-Fenton reactor (2), degassing neutralization pond (3), coagulative precipitation tank (4), regulating reservoir (5), microencapsulation biological fluidized bed (6) and immobilized biological activated carbon bed (7) that are sequentially connected through water pipe.Reasonable in design of the present invention, easy to operate, high working efficiency; low cost; good waste water treatment effect, materializing strategy, biochemical treatment and guarantee treatment are organically combined in order, and light electro-Fenton reactor, microencapsulation biological fluidized bed and immobilized biological activated carbon bed are functionally mutually supported; mutually promote; characteristic organic pollutants removal efficiency to difficult degradation is higher than 98%, and sludge yield is few, and Treatment of Sludge expense is low; good sewage processing effect, has great importance to environmental protection.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, and in particular to it is a kind of based on photoelectricity Fenton-biological reinforced waste water at
Reason system and its method of wastewater treatment, belong to technical field of waste water processing.
Background technology
Wastewater from chemical industry have water quantity and quality change greatly, biodegradability is poor, be difficult to the feature degraded and pollutant complexity is more
The features such as sample, the typically water quality according to actual waste water, take appropriate preprocess method, such as flocculation, light electrolysis, absorption, photocatalysis
Etc. technique, destroy hardly degraded organic substance in waste water, improve the biodegradability of waste water, then be combined biological method is carried out to wastewater from chemical industry
Treatment.
From the point of view of existing Patent data, Chinese patent " a kind of multiple oxidation treatment method of waste water and device "
(CN106145483A) a kind of multiple oxidation treatment method of waste water and device, the disclosed multiple oxidation treatment method of waste water are disclosed
Comprise the following steps：Waste water carries out anode electrocatalytic oxidation in neutral conditions；Fenton oxidation is carried out in acid condition；Part
The waste water of discharge carries out cathodic oxygen reduction under flowing to neutrallty condition；These reactions are carried out under ultrasound condition.Chinese patent " one
The comprehensive apparatus for physical Chemical treating of kind high-concentration hardly-degradable industrial wastewater " (CN203602439U) discloses a kind of processing unit, wraps
Include be sequentially connected by pipeline regulating reservoir, one-level micro-electrolysis device, one-level light radiation Fenton catalysis oxidation linkage, two grades
Micro-electrolysis device, secondary light radiation Fenton catalysis oxidation linkage, three-level micro-electrolysis device, microfiltration ceramic membrane component, activity
Charcoal adsorption tanks, carbon mineral wool polymerization pellet adsorption tanks, ultrafiltration apparatus, reverse osmosis unit；The light radiation Fenton catalysis oxidation connection
Quartz burner is provided with inside dynamic device；The absorbent charcoal adsorption tank is internally provided with ultrasonic wave transmitting tube.Above-mentioned patent is used
Multiple to aoxidize repeatedly, process route is complicated, does not consider the optimization function that biological treatment and follow-up process may be played.
Chinese patent " a kind of method (CN200610012070) of baffled reactor and its treatment sewage " and " integral type
High concentrated organic wastewater processing unit (CN200310100513.1) " is related to many secondary couplings of anaerobic processes and aerobic process, increases
Add the complexity of equipment and the difficulty of operational management, and without advanced oxidation processes.
It is tediously long to there is process route complexity in the combined treatment process of existing wastewater from chemical industry, and combination mechanism is chaotic, difficult degradation
Characteristic organic pollutant removal it is inefficient, process operation is unstable, it is impossible to the problems such as meeting environmental requirement.
The content of the invention
Goal of the invention：The invention aims to solve the deficiencies in the prior art, there is provided a kind of reasonable in design, behaviour
Facilitate, high working efficiency, low cost, good waste water treatment effect based on photoelectricity Fenton-biological reinforced Waste Water Treatment,
Another object of the present invention be to provide a kind of process optimization rationally, persistent organic pollutants treatment effeciency it is high, treatment effect
The chemical wastewater treatment method of fruit stabilization.
Technical scheme：In order to realize the purpose of the present invention, the technical solution adopted by the present invention is：
Based on photoelectricity Fenton-biological reinforced Waste Water Treatment, it includes the preaeration tank, the light that are sequentially connected through water pipe
Electro-Fenton reactor, degassing neutralization pond, coagulative precipitation tank, regulating reservoir, microencapsulation biological fluidized bed and immobilized biological activated carbon
Bed.
Preferably, it is above-described based on photoelectricity Fenton-biological reinforced Waste Water Treatment, described photoelectricity
It is provided with TiO in Fenton reactor2The anode of coating and the negative electrode of active carbon fiber felt, the plate spacing between anode and negative electrode
It is 4~6cm, the voltage between negative electrode and anode is controlled to 15V, 50~60mA/cm of current density2, apply ultraviolet source, with sun
Pole is irradiated in 45° angle, constitutes light electro-Fenton reaction system.Waste water first through preaeration after, into light electro-Fenton reactor, use first
The pH of sulfuric acid regulation waste water is 3~4, is subsequently adding FeSO4, it is then electrified to start electrolysis；While electrolysis, entered with ultraviolet light
, there is light electro-Fenton reaction in row irradiation, promote organic matter degradation mineralising；The light source of ultraviolet light is using the high-strength middle pressure mercury of 250W
Lamp, uviol lamp group exposure intensity 40-80MJ/m2, its radiation wave band is in 230~320nm.
Further, wastewater from chemical industry wastewater of chemical industry with high concentration water quality index：COD is that 5000~10000mg/L, SS are 150
~300mg/L, chlorobenzene class is 80~100mg/L, and nitrobenzene is 80~100mg/L；The bottom of described regulating reservoir is provided with micro-
Hole aerator, adjusts the water quality and quantity of waste water；Water quality index after adjusted：COD is that 2000~4000mg/L, SS are 150
~300mg/L, chlorobenzene class is 10~15mg/L, and nitrobenzene is 10~15mg/L.
Preferably, it is above-described based on photoelectricity Fenton-biological reinforced Waste Water Treatment, ultraviolet source
It is the high-strength medium pressure mercury lamps of 250W, uviol lamp group exposure intensity is 40-80MJ/m2, radiation wave band is 230~320nm.
Preferably, it is above-described based on photoelectricity Fenton-biological reinforced Waste Water Treatment, under regulating reservoir
Portion is provided with microporous aeration device, adjusts the water quality and quantity of waste water.
Preferably, it is above-described based on photoelectricity Fenton-biological reinforced Waste Water Treatment, microencapsulation biological
Fluid bed is anaerobic fluidized bed and aerobic fluidized bed using single-cylinder type, it is anaerobic fluidized bed and it is aerobic fluidized bed it is interior be provided with microcapsules, it is micro-
High-efficiency activated sludge or efficient degrading bacteria are embedded with capsule；
Anaerobic fluidized bed and aerobic fluidized bed reactor body is reaction zone, and the two is separated by lucite,
The ratio of height to diameter of the anaerobic fluidized bed and aerobic fluidized bed reactor body of single-cylinder type is respectively less than 2, and aerobic sub-population product is anaerobism
1.5~2 times of sub-population product；Waste water is entered by anaerobic fluidized bed bottom, drives microbial capsules to be in fluidisation using current
State；Waste water in anaerobic fluidized bed flows directly into aerobic fluidized bed；Aeration plate is provided with aerobic fluidized bed body, is driven with air-flow
Microbial capsules are in fluidisation state.
The present invention provide based on photoelectricity Fenton-biological reinforced method of wastewater treatment, it is comprised the following steps：
A, waste water is first input to preaeration tank through pump, carries out oxygenation and quenched；
B, preaeration tank water outlet enter light electro-Fenton reactor, under ultraviolet light, carry out electric Fenton oxidation reaction, go
Except most organic pollution, by medicine system to being separately added into H in light electro-Fenton reactor2SO4Solution and FeSO4It is molten
Liquid；
C, the water outlet of light electro-Fenton reactor enter degassing neutralization pond, and a small amount of gas is sloughed by stirring, add NaOH solution,
Adjust the pH value of waste water；
D, degassing neutralization pond water outlet enter coagulative precipitation tank, add coagulant, and control to stir by coagulant medicine system
Mix speed and form big flco；Sediment fraction is entered back into, the big flco of formation realizes precipitate and separate in settling zone, and precipitation is dirty
Mud is processed through sludge treating system；
E, the high-concentration waste water pre-processed by the neutralization pond that deaerates enter regulating reservoir, while can import low concentration wastewater adjusting
Section pond, the bottom of regulating reservoir is provided with microporous aeration device, regulating water quality water；
F, adjusted rear waste water are conveyed into microencapsulation biological fluidized bed, microencapsulation biological fluidized bed use monotubular by intake pump
Formula is anaerobic fluidized bed and single-cylinder type is aerobic fluidized bed, and anaerobic fluidized bed and aerobic fluidized bed interior being provided with microcapsules, microcapsules is wrapped
It is embedded with high-efficiency activated sludge or efficient degrading bacteria；
Anaerobic fluidized bed and aerobic fluidized bed reactor body is reaction zone, and the two is separated by lucite,
Single-cylinder type is anaerobic fluidized bed and the aerobic fluidized bed reactor body of single-cylinder type ratio of height to diameter is respectively less than 2, aerobic sub-population product
It is 1.5~2 times of anaerobic part cumulative volume；Waste water is entered by anaerobic fluidized bed bottom, is driven at microbial capsules using current
In fluidisation state；Waste water in anaerobic fluidized bed flows directly into aerobic fluidized bed；Aeration plate is provided with aerobic fluidized bed body, with gas
Stream drives microbial capsules to be in fluidisation state；Microcapsules can be according to the size of current or air-flow in anaerobic fluidized bed and aerobic stream
It is upper and lower in the reactor body of change bed to circulate treatment waste water；
G, microencapsulation biological fluidized bed water outlet enter immobilized biological activated carbon bed through infusion, and efficient degrading bacteria is fixed on
Determine metaplasia thing it is active-carbon bed in activated carbon on, and immobilized biological activated carbon bed water inlet when, intermittently add ozone, and lead to
The microporous aeration device for crossing bottom is aerated, and part COD and organic pollution in removal waste water, described immobilization biological are lived
Property charcoal bed in using activated carbon as filler, hydraulic detention time is 30~60min, and filtering velocity is 2.0~2.5m/h, through immobilization
Biological activated carbon bed processed waste water qualified discharge.
Further, using biotechnology, screening, tame and construct can be in degraded characteristic organic pollutants
Dominant microflora；The bio-microcapsule for being embedded into efficient degrading bacteria (for degraded characteristic organic pollutants) using microcapsules technology
In, microcapsules have suitable density, can up and down be circulated in the reactor according to the size of current or air-flow；Microencapsulation
Biological fluidized bed, its design volumetric loading is 10~15kgCOD/ (m3·d)。
Further, it is microencapsulation biological fluidized bed that anaerobic ammonium oxidizing bacteria is embedded in microcapsules, in microencapsulation biological stream
Cultivated in change bed, technique can be made to be suitable to process the C/N of nitrogen high than relatively low industrial wastewater.
Further, using biotechnology, screening, tame and construct can be in degraded characteristic organic pollutants
Dominant microflora；The dominant microflora after culture is will be enlarged by using the physisorphtion of intermittent cycle to fix on the activated carbon, is formed
Immobilized biological activated carbon, ozone oxidation is treated as the workshop section of checking on of group technology with immobilized biological activated carbon bed.
Groundwork process of the present invention is as follows.
1st, the basic process of photoelectricity Fenton is as follows
The pending present preaeration tank of waste water carries out oxygenation treatment, and ultraviolet light is introduced into electricity sweet smell in light electro-Fenton reactor
Pause and react, oxygen in water produces hydrogen peroxide in carbon cathode surface reduction, can be sent out with the ferrous ion in water or iron ion
Raw reaction produces hydroxyl radical free radical, it is also possible to hydroxyl radical free radical, synergistic oxidation degraded organic contamination are produced under ultraviolet radiation
Thing, and ultraviolet light can promote iron ion photoreduction to generate ferrous ion, promote the carrying out of Fenton's reaction.While photoelectricity
It is provided with TiO in Fenton reactor2The anode of coating and the negative electrode of active carbon fiber felt.With TiO2The anode of coating is in purple
Catalysed oxidn is had under outer light radiation come characteristic organic pollutants of degrading, be there is electricity on the negative electrode of active carbon fiber felt and inhaled
Attached effect.Electricity-Fenton combines electrochemical process and Fenton oxidation process, takes full advantage of the oxidability of the two.Electricity
Fenton technologies are relative to be had the following advantages that with traditional Fenton：(1) H is automatically generated2O2Mechanism it is more perfect；(2) it is gathered in the moon
The oxygen or air extremely gone up can improve the mixing effect of reaction solution；(3)Fe2+Can be few by cathode regenerative, sludge constant；(4) have
Machine thing degradation factors are more, the indirect oxidation of hydroxyl radical free radical OH, the direct oxidation of anode, electric coagulation and electric flocculation.Ultraviolet
Light introduces Fenton reagent can overcome the shortcoming of common Fenton reagent, and also referred to as light helps Fenton methods, UV/Fenton methods,
It is not common Fenton and UV/H2O2It is simple compound：(1)Fe3+And Fe2+Good circular response can be kept, biography is improve
The efficiency of Fenton reagent of uniting；(2) ultraviolet light and Fe2+To H2O2There is cooperative effect in catalytic decomposition, this is mainly due to iron
Some hydroxo complexes can occur caused by Photosensitive reaction generation OH；(3) make mineralization of organic material degree more abundant；(4) it is organic
Thing can Partial digestion under action of ultraviolet radiation.Electricity-Fenton helps Fenton not contradictions with light, merges into each other on the contrary, promotes oxygen
Change degraded.Therefore by light electro-Fenton reactor addition processing system, the Fenton's reaction under photoelectric-synergetic oxidation is integrated the present invention
Electrolysis, photocatalytic oxidation, Electro Sorb effect, electroxidation effect, Fenton oxidation effect etc., the degraded effect such as organic matter
It is really good.
2nd, microencapsulation biological fluidized bed groundwork process is as follows：
Biological fluidized bed sewage treatment process is to be combined traditional activated sludge process and biomembrance process and introduce chemical industry stream
State technology is applied to a kind of new bio processing unit of sewage disposal.It has that treatment effeciency is high, volumetric loading big, anti-impact
The advantages of hitting strong ability, facility compact, take up an area few.
It is microencapsulation biological fluidized bed with the composite biological fluidized-bed structure of single-cylinder type Aerobic-anaerobic.Prior art has been developed
Various aerobic formula, anaerobical and aerobic-anaerobic composite type biological fluidized bed be double-barrel structure, i.e., it is embedding inside reactive agent
Inner circulating reflux pipe or stripping tube are cased with, to increase three phase separation effect, larger draw ratio has often been used.This present invention is adopted
Biological fluidized bed is single-cylinder type, low draw ratio (H/D=1~2) reactive agent container so that under identical volume, compared with
Other biological fluidized beds developed have bigger dischargeable capacity.Microencapsulation (microencapsulation) technology and organism fluidization bed technique phase
With reference to.High-efficiency activated sludge or efficient degrading bacteria are embedded into the bio-microcapsule of particular size using microcapsules technology, it is micro-
Capsule has suitable density, can up and down be circulated in the reactor according to the size of current or air-flow.Microcapsules have
Suitable mechanical intensity, can in a long time bear fluid and its impact, shearing etc. is acted on.Microcapsules have suitable leading to
Permeability, it is ensured that under aerobic condition it is various degraded substrates and freeing in and out for metabolite and microorganism is fixed wherein.
Other biological fluidized beds developed save sizable three phase separation volume, while reduce sludge to greatest extent producing
Amount.Microcapsules can easily be added and reclaimed according to reaction needs, reduce environmental pollution.
Adjusted rear waste water is conveyed into microencapsulation biological fluidized bed by intake pump, is combined using single-cylinder type anaerobic-aerobic micro-
Encapsulated biological fluidized bed；The reactor body of anaerobic and aerobic fluid bed is reaction zone, is separated by lucite, and high
Footpath ratio is less than 2, and aerobic sub-population product is 1.5~2 times of anaerobic part cumulative volume；Waste water is entered by anaerobic fluidized bed bottom,
Microbial capsules are driven to be in fluidisation state using current；Waste water in anaerobic fluidized bed flows directly into aerobic fluidized bed；Aerobic stream
Change bed body similar with anaerobic fluidized bed, water-locator is replaced with aeration plate, drive microbial capsules to be in fluidisation state with air-flow.Adopt
With biotechnology, screening, tame and construct can be in the dominant microflora of degraded characteristic organic pollutants；Using microcapsules
In the bio-microcapsule that be embedded into for efficient degrading bacteria (for degraded characteristic organic pollutants) by technology.Microcapsules have suitable
Density, can up and down circulate in the reactor according to the size of current or air-flow；Microencapsulation biological fluidized bed, its design is held
Product load is 10~15kgCOD/ (m3·d).Can also be trained in fluid bed in microcapsule embedded anaerobic ammonium oxidizing bacteria
Support, technique can be made to be suitable to process the C/N of nitrogen high than relatively low industrial wastewater.
3rd, the groundwork process of immobilized biological activated carbon bed is as follows：
Immobilized biological activated carbon technique, the technique is by the strain of attachment, bacterium amount and advantage on manual control activated carbon
The formation of flora, removal of the sufficient oxygen realization of flora to object on air supply activated carbon is passed through in reactor bottom,
And increase interval and add ozone, to increase degradation of the immobilized biological activated carbon bed to characteristic organic pollutants.Solid
Determine metaplasia thing it is active-carbon bed in, the dominant microflora of degradation of organic substances is fixed on activated carbon, is improved biological treatment efficiency, is prolonged
Many advantages, such as usage cycles, reduction labour intensity of long acting charcoal so that the technique that the present invention is provided has significant economy
Benefit, social benefit and environmental benefit.Using biotechnology, screening, tame and construct can be organic in degraded feature
The dominant microflora of pollutant；The dominant microflora that be will be enlarged by after culture using the physisorphtion of intermittent cycle is fixed on activated carbon
On, immobilized biological activated carbon is formed, ozone oxidation is treated as the work of checking on of group technology with immobilized biological activated carbon bed
Section.
Process of the invention is suitable for the industrial wastewater of the organic properties pollutant containing difficult degradation such as wastewater from chemical industry
Treatment, total removal rate >=98% of COD and the organic pollution of difficult degradation in waste water, effluent quality can meet in environmental protection will
Ask.
Group Waste Water Treatment and its method that the present invention is provided, science combine different advanced oxidation processes, one
Secondary is preposition, photoelectric-synergetic Fenton advanced oxidation, major part characteristic organic pollutants is can remove, in light electro-Fenton reactor
Advanced oxidation effect has integrated electrolysis, photocatalytic oxidation, Electro Sorb effect, electroxidation effect, Fenton oxidation effect
Deng；Another time is the O in rearmounted immobilized biological activated carbon bed3Oxidation, front and rear oxidation mechanism is different, preposition mainly to go
Except process, rearmounted is guarantee treatment, is worked according to his ability, and rational division of labor is orderly, so as to the advanced oxidation for being greatly improved every section is imitated
Rate, makes water treatment effect higher.
There is biological reinforced processing procedure twice -- microencapsulation biological fluidized bed and immobilized biological activated carbon bed, all use
Immobilized microorganism technique.Microencapsulation is the newer application in immobilization technology.To efficiently be lived using microcapsules technology
Property sludge or efficient degrading bacteria be embedded into the bio-microcapsule of particular size, not only can enhanced bio-treatment significantly, also
Anaerobic ammonium oxidizing bacteria can be embedded, is cultivated in fluid bed, technique can be made to be suitable to process the C/N of nitrogen high than relatively low work
Industry waste water, so as to the range of application of group technology can be widened.Also have for characteristic contamination in immobilized biological activated carbon bed
Efficient degrading bacteria Immobilized culture, is also the continuity of biological reinforced treatment.The scientific and reasonable score arraying biomolecule strengthening process of the present invention
So that microencapsulation biological fluidized bed in system and immobilized biological activated carbon bed has all played high efficiency.System of the invention is to difficulty
The characteristic organic pollutants removal efficiency of degraded is high, can be more than 98%, achieves technique effect unexpected well.And
Process runs well reliability, can ensure that up to standard.
The processing system that the present invention is provided, combination difficulty is big, and advanced oxidation processes are a lot, biological treatment and biological reinforced hand
Section is also a lot, and the present invention is screened by many experiments, from each workshop section's general principle, ingenious each workshop section of reasonable Arrangement, fusion
The materializing strategy of advanced oxidation and there is a biological reinforced biochemical treatment.
The functionally mutually support of photoelectricity Fenton of the present invention, microencapsulation biological fluidized bed and immobilized biological activated carbon bed,
Mutually promote.Wastewater of chemical industry with high concentration is first processed through photoelectricity Fenton, eliminates most of characteristic organic pollutants, is subsequent treatment
Alleviate load；Waste water after pre-treatment and low concentration wastewater from chemical industry are adjusted to be suitable to regulating reservoir the comprehensive wastewater for the treatment of；
It is microencapsulation biological fluidized bed then to pass through the biological reinforced of microencapsulation, the function of biological treatment, energy have been played to greatest extent
Consumption is low, eliminates the COD of the overwhelming majority in water；Immobilized biological activated carbon bed is the technique of checking on of whole group technology, will be preceding
Face does not remove characteristic organic pollutants up to standard and COD, and further removal is in place.(1) photoelectricity Fenton is processed as subsequent treatment and subtracts
Light load, while have the treatment of follow-up microencapsulation biological fluidized bed and immobilized biological activated carbon bed, can economical rationality
Appropriate reduction Fenton medicament usage amount or the whole oxidation reaction residence time, reduce repeated oxidizing process repeatedly,
The characteristic organic pollutants exhaustive oxidation of difficult degradation need not be consumed substantial amounts of energy and medicament into carbon dioxide.(2) it is micro-
Encapsulated biological fluidized bed is the main removal workshop section of COD, preposition oxidation processes and regulation, alleviates it to feature organic contamination
The pressure of thing treatment, can to greatest extent play the function of biological treatment so that waste water basic handling is up to standard, biological treatment energy consumption
Low, the enhanced biological for particularly having immobilization technology is processed, and treatment effeciency is higher, and fluid bed sludge yield is few, treatment of sludge expense
With low, the cost of the energy consumption and medicament of advanced oxidation section can be made up.(3) immobilized biological activated carbon bed is whole group technology
Check on technique, be key that Pollutants in Wastewater is stabilized efficient removal.Because characteristic organic pollutants major part is in photoelectricity
Fenton section removed, in water the overwhelming majority COD in microencapsulation biological fluidized bed middle removing, so immobilized biological activated carbon
The treatment load of bed is not high, but when photoelectricity Fenton and microencapsulation biological fluidized bed treatment produce fluctuation, plays important handle
Close treatment effect.Integrated artistic is optimized after combination, more efficient, more economical, more stable.
Beneficial effect：The present invention provide based on photoelectricity Fenton-biological reinforced Waste Water Treatment and existing technique
Compare, the invention has the advantages that：
1st, the present invention provide based on photoelectricity Fenton-biological reinforced method of wastewater treatment, process route rationally, processor
Clear it is clear in order, the characteristic organic pollutants removal efficiency of difficult degradation is higher than 98%, and process runs well reliability can ensure that and reach
Mark.
2nd, the present invention provide method of wastewater treatment, as a result many experiments filter out optimal assembled scheme, the present invention is carried
The group technology of confession is by materializing strategy, biochemical treatment and ensures that treatment is organically combined in order, light electro-Fenton reactor, microencapsulation
Biological fluidized bed and immobilized biological activated carbon bed functionally mutually support that mutually promote, " collaboration advanced oxidation-biology is strong
Change-guarantee is processed " it is used in combination, it is proposed that the new conception plans of work wastewater treatment.
3rd, the present invention provide based on photoelectricity Fenton-biological reinforced Waste Water Treatment, reasonable in design, after combination
Integrated artistic is more efficient, more economical, more stable.Anaerobic ammonium oxidizing bacteria is embedded simultaneously, is cultivated in fluid bed, can widen
The range of application of group technology；Rational combination, makes integrated artistic anti impulsion load in order；Whole group technology sludge yield
Few, Treatment of Sludge expense is low, and good sewage processing effect has great importance to environmental protection.
Brief description of the drawings
Fig. 1 for the present invention provide based on photoelectricity Fenton-structural representation of biological reinforced Waste Water Treatment.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is furture elucidated, it should be understood that embodiment is merely to illustrate this hair
Bright rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are to of the invention various etc.
The modification of valency form falls within the application appended claims limited range.
Embodiment 1：
The production waste water that certain chemical enterprise is produced needs to be processed, and the wastewater of chemical industry with high concentration COD of before processing≤
8000mg/L, pH 6.5~8.5, SS≤300mg/L, NH3- N≤100mg/L, TP≤2.5mg/L, characteristic contamination concentration chlorine
Benzene class≤100mg/L.Wastewater from chemical industry COD≤2500mg/L, pH 6.5~8.5, SS≤300mg/L, NH3-N≤50mg/L,TP
≤ 1.0mg/L, characteristic contamination concentration chlorobenzene class≤10mg/L.Water outlet requirement reaches《The main water pollution of Chemical Industry in Jiangsu Province
Thing discharge standard》(DB32/939-2006) secondary standard.Effluent index requirement COD≤120mg/L, pH 6.5~8.5, SS≤
150mg/L, NH3- N≤25mg/L, TP≤1.0mg/L, characteristic contamination concentration chlorobenzene class≤1.0mg/L.
Using the Waste Water Treatment based on photoelectricity Fenton-biological reinforced in accompanying drawing 1, including the pre-exposure being connected by pipeline
Gas pond 1, light electro-Fenton reactor 2, degassing neutralization pond 3, coagulative precipitation tank 4, regulating reservoir 5, microencapsulation biological fluidized bed 6 and fixation
Metaplasia thing active-carbon bed 7, can install delivery pump on water pipe.
Concrete operation step：
(1) wastewater of chemical industry with high concentration is input into preaeration tank 1 through pump, carries out oxygenation and quenched；
(2) preaeration tank water outlet enters light electro-Fenton reactor 2, under ultraviolet light, carries out electric Fenton advanced oxidation
Reaction, mainly removes most characteristic organic pollutants, by medicine system to being separately added into light electro-Fenton reactor
H2SO4Solution and FeSO4Solution；
(3) water outlet of light electro-Fenton reactor 2 enters degassing neutralization pond 3, and a small amount of gas is sloughed by stirring, adds NaOH molten
Liquid, adjusts the pH value of waste water；
(4) the degassing water outlet of neutralization pond 3 enters coagulative precipitation tank, adds coagulant by coagulant medicine system, and control
Mixing speed forms big flco；Sediment fraction is entered back into, the big flco of formation realizes precipitate and separate in settling zone, precipitated
Sludge is processed through sludge treating system；
(5) wastewater of chemical industry with high concentration after pretreatment, into regulating reservoir 4, while low concentration wastewater from chemical industry imports regulating reservoir
4, the bottom of regulating reservoir 4 is provided with microporous aeration device, regulating water quality water；
(6) adjusted rear waste water is conveyed into microencapsulation biological fluidized bed 5 by intake pump, multiple using single-cylinder type anaerobic-aerobic
Close microencapsulation biological fluidized bed；The reactor body of anaerobic and aerobic fluid bed is reaction zone, is separated by lucite,
And ratio of height to diameter takes 1.5, aerobic sub-population product is 2 times of anaerobic part cumulative volume；Waste water is entered by anaerobic fluidized bed bottom, profit
Microbial capsules are driven to be in fluidisation state with current；Waste water in anaerobic fluidized bed flows directly into aerobic fluidized bed；Aerobic fluidisation
Bed body is similar with anaerobic fluidized bed, and water-locator is replaced with aeration plate, drives microbial capsules to be in fluidisation state with air-flow；
(7) microencapsulation biological fluidized bed 5 water outlet enters immobilized biological activated carbon bed 6 through infusion, and efficient degrading bacteria (is directed to
Degraded characteristic organic pollutants：Chlorobenzene class) fix on the activated carbon, intermittently added in the water inlet to immobilized biological activated carbon bed
Ozone, is aerated by the microporous aeration device of bottom, part COD and characteristic organic pollutants in removal waste water, described
Using activated carbon as filler in immobilized biological activated carbon bed, dosage is calculated as 50%, during hydraulic retention with percent by volume
Between be 45min, filtering velocity is 2.0m/h, through immobilized biological activated carbon bed processed waste water qualified discharge.
It is provided with TiO in light electro-Fenton reactor2The anode of coating and the negative electrode of active carbon fiber felt, the plate of two interpolars
Spacing is 5cm, and the voltage between negative electrode and anode is controlled to 15V, current density 50mA/cm2, apply ultraviolet source, with anode
Plate irradiates in 45° angle, constitutes light electro-Fenton reaction system；Waste water first through preaeration after, into light electro-Fenton reactor, use first
The pH of sulfuric acid regulation waste water is 3, is subsequently adding FeSO4, it is then electrified to start electrolysis；While electrolysis, carried out with ultraviolet light
, there is light electro-Fenton reaction in irradiation, promote organic matter degradation mineralising；The light source of ultraviolet light be using the high-strength medium pressure mercury lamps of 250W,
Uviol lamp group exposure intensity 60MJ/m2, its radiation wave band is in 230~320nm.
Using microcapsules technology by efficient degrading bacteria (for degraded characteristic organic pollutants：Chlorobenzene class) biology that is embedded into
In microcapsules, microcapsules have suitable density, can up and down be circulated in the reactor according to the size of current or air-flow；
Microencapsulation biological fluidized bed, its design volumetric loading is 12kgCOD/ (m3·d).Ozone oxidation and immobilized biological activated carbon bed
It is treated as the workshop section of checking on of group technology.
After processed by the invention, effluent index COD≤80mg/L, pH 6.5~8.5, SS≤50mg/L, NH3-N≤
15mg/L, TP≤0.5mg/L, characteristic contamination concentration chlorobenzene class≤0.8mg/L.Leading indicator each unit treatment effect see the table below
1。
The leading indicator each unit treatment effect list of table 1
Embodiment 2：
The production waste water that certain chemical enterprise is produced needs to be processed, and the wastewater of chemical industry with high concentration COD of before processing≤
10000mg/L, pH 6.5~8.5, SS≤300mg/L, NH3- N≤100mg/L, TP≤2.0mg/L, characteristic contamination concentration nitre
Base benzene class≤100mg/L.Low concentration chemical industry waste water COD≤3000mg/L, pH 6.5~8.5, SS≤300mg/L, NH3-N≤
50mg/L, TP≤1.0mg/L, characteristic contamination concentration nitrobenzene≤10mg/L.Water outlet requirement reaches《Chemical Industry in Jiangsu Province
Main pollution discharge standard》(DB32/939-2006) secondary standard.Effluent index requirement COD≤120mg/L, pH 6.5
~8.5, SS≤150mg/L, NH3- N≤25mg/L, TP≤1.0mg/L, characteristic contamination concentration nitrobenzene≤1.0mg/L.
Using the Waste Water Treatment based on photoelectricity Fenton-biological reinforced in accompanying drawing 1, including the pre-exposure being connected by pipeline
Gas pond 1, light electro-Fenton reactor 2, degassing neutralization pond 3, coagulative precipitation tank 4, regulating reservoir 5, microencapsulation biological fluidized bed 6 and fixation
Metaplasia thing active-carbon bed 7, can install delivery pump on water pipe.
Concrete operation step：
(1) wastewater of chemical industry with high concentration is input into preaeration tank 1 through pump, carries out oxygenation and quenched；
(2) water outlet of preaeration tank 1 enters light electro-Fenton reactor 2, under ultraviolet light, carries out electric Fenton advanced oxidation
Reaction, mainly removes most characteristic organic pollutants, by medicine system to being separately added into light electro-Fenton reactor 2
H2SO4Solution and FeSO4Solution；
(3) water outlet of light electro-Fenton reactor 2 enters degassing neutralization pond, and a small amount of gas is sloughed by stirring, adds NaOH molten
Liquid, adjusts the pH value of waste water；
(4) degassing neutralization pond water outlet enters coagulative precipitation tank 3, adds coagulant by coagulant medicine system, and control
Mixing speed forms big flco；Sediment fraction is entered back into, the big flco of formation realizes precipitate and separate in settling zone, precipitated
Sludge is processed through sludge treating system；
(5) wastewater of chemical industry with high concentration after pretreatment, into regulating reservoir 4, while low concentration wastewater from chemical industry imports regulating reservoir
4, the bottom of regulating reservoir 4 is provided with microporous aeration device, regulating water quality water；
(6) adjusted rear waste water is conveyed into microencapsulation biological fluidized bed 5 by intake pump, multiple using single-cylinder type anaerobic-aerobic
Close microencapsulation biological fluidized bed；The reactor body of anaerobic and aerobic fluid bed is reaction zone, is separated by lucite,
And ratio of height to diameter takes 1.5, aerobic sub-population product is 2 times of anaerobic part cumulative volume；Waste water is entered by anaerobic fluidized bed bottom, profit
Microbial capsules are driven to be in fluidisation state with current；Waste water in anaerobic fluidized bed flows directly into aerobic fluidized bed；Aerobic fluidisation
Bed body is similar with anaerobic fluidized bed, and water-locator is replaced with aeration plate, drives microbial capsules to be in fluidisation state with air-flow；
(7) microencapsulation biological fluidized bed water outlet enters immobilized biological activated carbon bed 6 through infusion, and efficient degrading bacteria (is directed to
Degraded characteristic organic pollutants：Nitrobenzene) fix on the activated carbon, intermittently thrown in the water inlet to immobilized biological activated carbon bed
Plus ozone, it is aerated by the microporous aeration device of bottom, part COD and characteristic organic pollutants in removal waste water are described
Immobilized biological activated carbon bed in using activated carbon as filler, dosage is calculated as 55%, hydraulic retention with percent by volume
Time is 45min, and filtering velocity is 2.0m/h, through immobilized biological activated carbon bed processed waste water qualified discharge.
It is provided with TiO in light electro-Fenton reactor 22The anode of coating and the negative electrode of active carbon fiber felt, two interpolars
Plate spacing is 5cm, and the voltage between negative electrode and anode is controlled to 15V, current density 60mA/cm2, apply ultraviolet source, with sun
Pole plate irradiates in 45° angle, constitutes light electro-Fenton reaction system；Waste water first through preaeration after, into light electro-Fenton reactor, first
The pH that waste water is adjusted with sulfuric acid is 3, is subsequently adding FeSO4, it is then electrified to start electrolysis；While electrolysis, entered with ultraviolet light
, there is light electro-Fenton reaction in row irradiation, promote organic matter degradation mineralising；The light source of ultraviolet light is using the high-strength middle pressure mercury of 250W
Lamp, uviol lamp group exposure intensity 60MJ/m2, its radiation wave band is in 230~320nm.
Using microcapsules technology by efficient degrading bacteria (for degraded characteristic organic pollutants：Nitrobenzene) life that is embedded into
In thing microcapsules, microcapsules have suitable density, can be according to the size of current or air-flow upper and lower recycle stream in the reactor
It is dynamic；Microencapsulation biological fluidized bed, its design volumetric loading is 12kgCOD/ (m3·d).Ozone oxidation with it is immobilized biological activated
Charcoal bed is treated as the workshop section of checking on of group technology.
After combined PROCESS FOR TREATMENT, effluent index COD≤80mg/L, pH 6.5~8.5, SS≤50mg/L, NH3-N≤
15mg/L, TP≤0.5mg/L, characteristic contamination concentration nitrobenzene≤0.8mg/L.Leading indicator each unit treatment effect sees below
Table 2.
The leading indicator each unit treatment effect list of table 2
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. the Waste Water Treatment based on photoelectricity Fenton-biological reinforced, it is characterised in that it include through water pipe be sequentially connected it is pre-
Aeration tank (1), light electro-Fenton reactor (2), degassing neutralization pond (3), coagulative precipitation tank (4), regulating reservoir (5), microencapsulation biological
Fluid bed (6) and immobilized biological activated carbon bed (7).
2. it is according to claim 1 based on photoelectricity Fenton-biological reinforced Waste Water Treatment, it is characterised in that it is described
Light electro-Fenton reactor (2) in be provided with TiO2The anode of coating and the negative electrode of active carbon fiber felt, anode and negative electrode it
Between plate spacing be 4~6cm, the voltage between negative electrode and anode is controlled to 15V, 50~60mA/cm of current density2, apply ultraviolet
Radiant, irradiates with anode in 45° angle, constitutes light electro-Fenton reaction system.
3. it is according to claim 2 based on photoelectricity Fenton-biological reinforced Waste Water Treatment, it is characterised in that it is ultraviolet
Radiant is the high-strength medium pressure mercury lamps of 250W, and uviol lamp group exposure intensity is 40-80MJ/m2, radiation wave band is 230~320nm.
4. it is according to claim 1 based on photoelectricity Fenton-biological reinforced Waste Water Treatment, it is characterised in that regulation
The bottom in pond (5) is provided with microporous aeration device, adjusts the water quality and quantity of waste water.
5. it is according to claim 1 based on photoelectricity Fenton-biological reinforced Waste Water Treatment, it is characterised in that micro-capsule
Metaplasia fluidized beds (6) are anaerobic fluidized bed and aerobic fluidized bed using single-cylinder type, anaerobic fluidized bed and aerobic fluidized bed interior be provided with
Microcapsules, are embedded with high-efficiency activated sludge or efficient degrading bacteria in microcapsules；
Anaerobic fluidized bed and aerobic fluidized bed reactor body is reaction zone, and the two is separated by lucite, monotubular
The ratio of height to diameter of the anaerobic fluidized bed and aerobic fluidized bed reactor body of formula is respectively less than 2, and aerobic sub-population product is anaerobic part
1.5~2 times of cumulative volume；Waste water is entered by anaerobic fluidized bed bottom, drives microbial capsules to be in fluidisation state using current；Detest
Waste water in oxygen fluid bed flows directly into aerobic fluidized bed；Aeration plate is provided with aerobic fluidized bed body, micro- life is driven with air-flow
Composite capsule is in fluidisation state.
6. it is according to claim 1 based on photoelectricity Fenton-biological reinforced Waste Water Treatment, it is characterised in that it is fixed
Metaplasia thing active-carbon bed (7) is connected with ozone discharge device；The activated carbon of immobilized biological activated carbon bed (7) is provided with organic matter
Degradation flora.
7. the method for wastewater treatment based on photoelectricity Fenton-biological reinforced, it is characterised in that comprise the following steps：
A, waste water is first input to preaeration tank (1) through pump, carries out oxygenation and quenched；
B, preaeration tank (1) water outlet enter light electro-Fenton reactor (2), under ultraviolet light, carry out electric Fenton oxidation reaction,
Most organic pollution is removed, by medicine system to being separately added into H in light electro-Fenton reactor (2)2SO4Solution and
FeSO4Solution；
C, light electro-Fenton reactor (2) water outlet enter degassing neutralization pond (3), and a small amount of gas is sloughed by stirring, add NaOH molten
Liquid, adjusts the pH value of waste water；
D, degassing neutralization pond (3) water outlet enter coagulative precipitation tank (4), add coagulant by coagulant medicine system, and control
Mixing speed forms big flco；Sediment fraction is entered back into, the big flco of formation realizes precipitate and separate in settling zone, precipitated
Sludge is processed through sludge treating system；
E, the high-concentration waste water pre-processed by the neutralization pond (3) that deaerates enter regulating reservoir (5), while can import low concentration wastewater
Regulating reservoir (3), the bottom of regulating reservoir (3) is provided with microporous aeration device, regulating water quality water；
F, adjusted rear waste water are conveyed into microencapsulation biological fluidized bed (6) by intake pump, and microencapsulation biological fluidized bed (6) are using single
Cartridge type is anaerobic fluidized bed and single-cylinder type is aerobic fluidized bed, it is anaerobic fluidized bed and it is aerobic fluidized bed it is interior be provided with microcapsules, in microcapsules
It is embedded with high-efficiency activated sludge or efficient degrading bacteria；
Anaerobic fluidized bed and aerobic fluidized bed reactor body is reaction zone, and the two is separated by lucite, monotubular
Formula is anaerobic fluidized bed and the aerobic fluidized bed reactor body of single-cylinder type ratio of height to diameter is respectively less than 2, and aerobic sub-population product is to detest
1.5~2 times of oxygen sub-population product；Waste water is entered by anaerobic fluidized bed bottom, drives microbial capsules to be in stream using current
Change state；Waste water in anaerobic fluidized bed flows directly into aerobic fluidized bed；Aeration plate is provided with aerobic fluidized bed body, with air-flow band
Dynamic microbial capsules are in fluidisation state；Microcapsules can be according to the size of current or air-flow anaerobic fluidized bed and aerobic fluidized bed
Reactor body in upper and lower circulate treatment waste water；
G, microencapsulation biological fluidized bed (6) water outlet enter immobilized biological activated carbon bed (7) through infusion, and efficient degrading bacteria is fixed on
On activated carbon in immobilized biological activated carbon bed (7), and in the water inlet of immobilized biological activated carbon bed (7), intermittently add
Ozone, and microporous aeration device by bottom is aerated, more than 98% organic pollution, qualified discharge in removal waste water.
8. it is according to claim 7 based on photoelectricity Fenton-biological reinforced method of wastewater treatment, it is characterised in that photoelectricity
Fenton reactor is provided with TiO in (2)2Between the anode of coating and the negative electrode of active carbon fiber felt, the plate between anode and negative electrode
Away from being 4~6cm, the voltage between negative electrode and anode is controlled to 15V, 50~60mA/cm of current density2, apply ultraviolet source, with
Positive plate irradiates in 45° angle, constitutes light electro-Fenton reaction system；Waste water first through preaeration after, it is first into light electro-Fenton reactor
The pH that waste water is first adjusted with sulfuric acid is 3~4, is subsequently adding FeSO4, it is then electrified to start electrolysis；While electrolysis, with ultraviolet
Light is irradiated, and light electro-Fenton reaction occurs, and promotes organic matter degradation mineralising；The light source of ultraviolet light is using the high-strength middle pressures of 250W
Mercury lamp, uviol lamp group exposure intensity 40-80MJ/m2, its radiation wave band is in 230~320nm.
9. it is according to claim 7 based on photoelectricity Fenton-biological reinforced method of wastewater treatment, it is characterised in that it is described
Immobilized biological activated carbon bed (7) in using activated carbon as filler, dosage is calculated as 50%~60% with percent by volume,
Hydraulic detention time is 30~60min, and filtering velocity is 2.0~2.5m/h, is reached through immobilized biological activated carbon bed (7) processed waste water
Mark discharge.
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