CN109095610A - A kind of three-stage photocatalysis composite suspension step biofilm reactor - Google Patents
A kind of three-stage photocatalysis composite suspension step biofilm reactor Download PDFInfo
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- CN109095610A CN109095610A CN201811048601.4A CN201811048601A CN109095610A CN 109095610 A CN109095610 A CN 109095610A CN 201811048601 A CN201811048601 A CN 201811048601A CN 109095610 A CN109095610 A CN 109095610A
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- photocatalysis
- sewage
- composite
- decomposing pool
- treatment pond
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F2305/10—Photocatalysts
Abstract
The present invention relates to a kind of three-stage photocatalysis composite suspension step biofilm reactors, belong to water-treatment technology field.Three groups of decomposing pools are devised in the present invention, respectively anaerobe decomposing pool and oxygen photocatalysis treatment pond and photocatalysis treatment pond, three-level decomposing pool carries out anaerobe decomposition, amphimicrobian photocatalysis treatment and photocatalysis treatment respectively, organic matter and the harmful element etc. in sewage are effectively removed by three kinds of different catalytic way, purified treatment effectively has been carried out to sewage, has improved the quality and efficiency of sewage purification；The photochemical catalyst used in the present invention is silver metavanadate composite Ti O2/ PP material, photochemical catalyst of the silver metavanadate as monocrystalline bulk structure have stronger absorption in visible region, higher to the utilization rate of visible light, so by silver metavanadate composite Ti O2/ PP material can effectively improve light-catalysed efficiency as photochemical catalyst, to improve the treatment effeciency and processing quality of sewage.
Description
Technical field
The present invention relates to a kind of three-stage photocatalysis composite suspension step biofilm reactors, belong to water treatment technology neck
Domain.
Background technique
Technology of biological membrane is a kind of domestic and international widely applied efficient biological wastewater treatment technology, is also belonged to theoretically
Immobilized microorganism technique.In bioreactor, the nutriments such as dissolved oxygen, organic matter are gradually diffused into biology by liquid phase
Film surface, so that the microorganism being attached on filling carrier constantly contacts with it and will be polluted by the metabolism of itself
Object mineralising and so that itself is grown into and is bred, to achieve the effect that purified treatment sewage.
Microorganism is constantly attached on filler or carrier, gradually forms one layer of meagre biomembrane, when sewage flows through biology
When film, pollutant therein is just constantly contacted with zoogloea, and pollutant is also purified while microorganism constantly grows, and works as life
After object film growth and maturity, biomembrane just forms a kind of dynamic equilibrium between growing and falling off, and biomembrane is continuous in the process
It updates, the place of a suitable microorganism growth is formd, so that the pollutant of water body be made constantly to be degraded.Microbial adherence in
Such a state of biomembrane that carrier is formed, so that microorganism is especially as slow growth, thin to the more sensitive nitrification of environment
Bacterium etc. has a metastable environment to resist extraneous poor environment, while avoiding being largely lost for functional flora, improves
The concentration of effective microbe in unit space.In addition, the picture microorganisms such as der Pilz, wheel animalcule, nematode occurred on biomembrane can
To greatly improve treatment effeciency.
Compared with conventional recovery technique, Biomembran repair technology is not vulnerable to water temperature, degree of water pollution and microthermal climate
Etc. factors influence.Polluted-water Biomembran repair technology is only at experimental stage in China, though starting late, develops fast
Speed, the carrier that wherein filler adheres to as microorganism, the performances such as material, hydrophilicity, specific surface area and water distribution distribution are equal
Will affect the runnability of bioreactor, at the same the price of filler be also an important factor for being had to take into account that in operational process it
One.Therefore, good microbe carrier should have low cost and high performance feature and can be promoted the use of.Currently, domestic
Relatively broad to the research of microbial carrier outside, involved wire feeding is more, such as elastic filler, floating stuffing and combination
Filler can be divided into fixed, suspension type and the several types such as floated according to its design feature by filler etc., and wherein elasticity is filled out
Material and floating stuffing respectively as fixed filler and floating filler Typical Representative, because its stronger hydrophilicity and compared with
It is used widely for cheap price.
Studies have shown that Starting mode is to influence one of the key factor of stain disease biological treatment system runnability, biofilm
The length in period and the activity for forming biomembrane directly affect engineering effort with stability.It is led both at home and abroad in stain disease biology at present
More biofilm mode is studied in domain natural membrane method, and quick spoil disposal biofilm method, the bored exposure biofilm method of inoculation, flow are incremented by biofilm method
Deng, these different biofilm modes by changing the technological parameters such as inoculation mud source, aeration and sludge discharge way, to reach reactor
The efficient purpose of quick start, stable system performance.However natural or single artificial-strengthening biofilm process conditions are not enough to assign
Give the strong living environment of oligotrophic habitat functional microorganism, it is difficult to realize biosystem quick start and efficient stable operation,
Therefore the outstanding problems such as microorganism growth rate is low, start-up is slow are directed under oligotrophic habitat, are more likely to above-mentioned biofilm
Mode combines the rapid biofilm starting to realize system.
Summary of the invention
Present invention mainly solves the technical issues of: for the low problem of existing apparatus sewage treating efficiency, the present invention is provided
A kind of three-stage photocatalysis composite suspension step biofilm reactor.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention:
A kind of three-stage photocatalysis composite suspension step biofilm reactor, including anaerobe decomposing pool and oxygen photocatalysis
Processing pond and photocatalysis treatment pond, the anaerobe decompose bottom of pond portion and are provided with water inlet line, set on water inlet line
It is equipped with intake pump, aerated conduit is provided among anaerobe decomposing pool, connects inlet duct on the left of aerated conduit, anaerobism is micro-
Uniformly dispersing has reaction medium inside biological decomposition pond, and the simultaneous oxygen photocatalysis treatment pond is arranged in anaerobe decomposing pool
It is connected between right side, and oxygen photocatalysis treatment pond and anaerobe decomposing pool by pipeline, pipeline is internally provided with pressure
Valve, the photocatalysis treatment pond setting is on the right side of simultaneous oxygen photocatalysis treatment pond, photocatalysis treatment pond and and oxygen photocatalysis treatment
Pipeline and check valve are provided between pond.
A kind of application method of three-stage photocatalysis composite suspension step biofilm reactor is: sewage through intake pump from into
It is pumped into waterpipe in anaerobe decomposing pool, the silver metavanadate that sewage is filled through inside anaerobe decomposing pool is compound
TiO2/ PP filtrate is filtered, and subsequent inlet duct is aerated by aerated conduit to anaerobe decomposing pool, through Air Exposure
Microorganism mass propagation in sewage, and the silver metavanadate composite Ti O inside anaerobe decomposing pool2/ PP filtrate table
Face forms the biomembrane of microbial reproduction, is decomposed by biofilm surface biomass to organic matter, due in decomposable process
Bulk gas, the pressure rise inside anaerobe decomposing pool can be generated, to make pressure valve open, by biomembrane material point
The sewage of solution processing enters in simultaneous oxygen photocatalysis treatment pond through pressure valve, since filtrate material is composite material, is suspended into simultaneous oxygen
In photocatalysis treatment pond, while simultaneous oxygen photocatalysis treatment pond surface layer contact sunlight and oxygen, on simultaneous oxygen photocatalysis treatment pond top
It is divided into aerobic bacteria and photocatalysis Decomposition processing sewage, lower part point does not reach sunlight and air, continues anaerobic digestion and handles dirt
Water, sewage leads to more check valves after handling in simultaneous oxygen photocatalysis treatment pond and enters in photocatalysis treatment pond, due to photocatalysis treatment
Larger with oxygen contact surface and sun exposure face in pond, there is no anaerobic bacterias to handle sewage, and the sewage through secondary treatment is through inclined vanadium
Sour silver composite Ti O2/ PP filtrate carries out light-catalyzed reaction, decomposes small molecular weight impurity and forms final process.
The silver metavanadate composite Ti O2/ PP filtrate the preparation method comprises the following steps:
(1) it takes n,N-Dimethylformamide to be added in isopropanol to stir evenly, then butyl titanate is added dropwise, continue stirring until dropwise addition
It finishes, is transferred in hydrothermal reaction kettle and reacts after being added dropwise, filtering, alcohol are washed, dried after being cooled to room temperature, by the product after drying
It is fitted into Muffle furnace and calcines, cooling nano-titanium dioxide；
(2) ammonium metavanadate is added in deionized water, obtains lysate and be stirred, then is molten to nitric acid is added dropwise in lysate
Liquid obtains mixed liquor and is placed in hydrothermal reaction kettle, and standing is cooled to room temperature, and is aged at room temperature, is centrifugated and collects lower layer
Precipitating, by drying precipitate, grinds to obtain silver metavanadate powder；
(3) titanyl sulfate is added in sodium hydroxide solution and is stirred, then epoxychloropropane is added dropwise, obtained prepolymer, take phosphoric acid
Cobalt/composite titania material is added in sodium hydroxide solution, is dispersed with ultrasonic wave, obtains dispersion liquid, pre-polymerization is added in dispersion liquid
It is stirred in object, adds epoxychloropropane, filtered, wash after being cooled to room temperature, is dry, obtaining photocatalysis filler；
(4) it takes photocatalysis filler, silver metavanadate powder to be fitted into and melt blending in instrument is blended, by mixture after being cooled to 40 ~ 50 DEG C
It is fitted into injection molding in injection molding instrument, and under 1 ~ 2MPa pressure, heat preservation 1 ~ 2h of compacting, discharge to obtain silver metavanadate TiO2/ PP biology
Filtrate.
The reaction medium is silver metavanadate composite Ti O2/ PP filtrate.
The sewage is sanitary sewage.
The processing pond is all rectangular processing pond, and anaerobe decomposing pool is seal shape.
The beneficial effects of the present invention are:
(1) a kind of three-stage photocatalysis composite suspension step biofilm reactor is devised in the present invention, is devised in the present invention
Three groups of decomposing pools, respectively anaerobe decomposing pool and oxygen photocatalysis treatment pond and photocatalysis treatment pond, three-level decomposing pool
Anaerobe decomposition, amphimicrobian photocatalysis treatment and photocatalysis treatment are carried out respectively, pass through three kinds of different catalysis sides
Formula effectively removes organic matter and harmful element in sewage etc., has effectively carried out purified treatment to sewage, improves sewage purification
Quality and efficiency；
(2) photochemical catalyst used in the present invention is silver metavanadate composite Ti O2/ PP material, silver metavanadate are mutually tied as monocrystal
The photochemical catalyst of structure has stronger absorption in visible region, higher to the utilization rate of visible light, so silver metavanadate is compound
TiO2/ PP material can effectively improve light-catalysed efficiency as photochemical catalyst, to improve treatment effeciency and the place of sewage
Manage quality.
Detailed description of the invention
Fig. 1 is silver metavanadate composite Ti O of the present invention2The organigram of/PP suspension step biofilm reactor.
Wherein, 1, inlet duct；2, aerated conduit；3, reaction medium；4, pressure valve；5, check valve；6, water inlet line；7,
Intake pump；8, anaerobe decomposing pool；9, simultaneous oxygen photocatalysis treatment pond；10, photocatalysis treatment pond.
Specific embodiment
A kind of three-stage photocatalysis composite suspension step biofilm reactor, including anaerobe decomposing pool 8 and oxygen light
Catalytic treatment pond 9 and photocatalysis treatment pond 10,8 bottom of anaerobe decomposing pool are provided with water inlet line 6, water inlet
Be provided with intake pump 7 on pipeline 6, aerated conduit 2 be provided among anaerobe decomposing pool 8, connected on the left of aerated conduit 2 into
Device of air 1,8 inside uniformly dispersing of anaerobe decomposing pool have reaction medium 3, and the simultaneous oxygen photocatalysis treatment pond 9 is arranged
On 8 right side of anaerobe decomposing pool, and it is connected between oxygen photocatalysis treatment pond 9 and anaerobe decomposing pool 8 by pipeline
It connects, pipeline is internally provided with pressure valve 4, and the setting of photocatalysis treatment pond 10 is urged in simultaneous 9 right side of oxygen photocatalysis treatment pond, light
Change and is provided with pipeline and check valve 5 between processing pond 10 and simultaneous oxygen photocatalysis treatment pond 9.A kind of three-stage photocatalysis composite suspension
The application method of step biofilm reactor is: sewage is pumped into anaerobe decomposing pool 8 through intake pump 7 from water inlet line 6
In, sewage is filled through the silver metavanadate composite Ti O inside anaerobe decomposing pool 82/ PP filtrate is filtered, with laggard
Device of air 1 is aerated by aerated conduit 2 to anaerobe decomposing pool 8, through the microorganism mass propagation in Air Exposure sewage,
And the silver metavanadate composite Ti O inside anaerobe decomposing pool 82The biology of/PP filter material surface formation microbial reproduction
Film decomposes organic matter by biofilm surface biomass, due to that can generate bulk gas, the micro- life of anaerobism in decomposable process
Pressure rise inside object decomposing pool 8, to make pressure valve 4 open, by the sewage of biomembrane material resolution process through pressure valve 4
Into in simultaneous oxygen photocatalysis treatment pond 9, since filtrate material is composite material, it is suspended into simultaneous oxygen photocatalysis treatment pond 9, simultaneously
And 9 surface layer of oxygen photocatalysis treatment pond contacts sunlight and oxygen, is divided into aerobic bacteria and photocatalysis on simultaneous 9 top of oxygen photocatalysis treatment pond
Resolution process sewage, lower part point do not reach sunlight and air, continue anaerobic digestion and handle sewage, and sewage is in simultaneous oxygen photocatalysis
Lead to more check valves 5 after handling in processing pond 9 to enter in photocatalysis treatment pond 10, due to contacting in photocatalysis treatment pond 10 with oxygen
Face and sun exposure face are larger, and there is no anaerobic bacterias to handle sewage, and the sewage through secondary treatment is through silver metavanadate composite Ti O2/PP
Filtrate carries out light-catalyzed reaction, decomposes small molecular weight impurity and forms final process.The silver metavanadate composite Ti O2/ PP filtrate
The preparation method comprises the following steps: (1) takes n,N-Dimethylformamide to be added in isopropanol stirs evenly, then butyl titanate is added dropwise, continues
Stirring is transferred in hydrothermal reaction kettle after being added dropwise and reacts to being added dropwise, and filtering, alcohol are washed, dried after being cooled to room temperature, and will do
Product after dry, which is fitted into Muffle furnace, to be calcined, cooling nano-titanium dioxide；(2) ammonium metavanadate is added in deionized water,
It obtains lysate and is stirred, then to nitric acid solution is added dropwise in lysate, obtains mixed liquor and be placed in hydrothermal reaction kettle, stand cold
But it to room temperature, is aged at room temperature, is centrifugated and collects lower sediment, by drying precipitate, grind to obtain silver metavanadate powder；
(3) titanyl sulfate is added in sodium hydroxide solution and is stirred, then epoxychloropropane is added dropwise, obtained prepolymer, take cobalt phosphate/bis-
Titanium oxide composite material is added in sodium hydroxide solution, is dispersed with ultrasonic wave, obtains dispersion liquid, and dispersion liquid is added in prepolymer and is stirred
It mixes, adds epoxychloropropane, filter, wash after being cooled to room temperature, is dry, obtaining photocatalysis filler；(4) take photocatalysis filler,
Silver metavanadate powder, which is fitted into, is blended melt blending in instrument, and mixture is fitted into injection molding in injection molding instrument after being cooled to 40 ~ 50 DEG C,
And under 1 ~ 2MPa pressure, heat preservation 1 ~ 2h of compacting, discharge to obtain silver metavanadate TiO2/ PP biofilter material.The reaction medium 3 is
Silver metavanadate composite Ti O2/ PP filtrate.The sewage is sanitary sewage.The processing pond is all rectangular processing pond, and is detested
Oxygen animalcule decomposing pool 8 is seal shape.
Claims (6)
1. a kind of three-stage photocatalysis composite suspension step biofilm reactor, including anaerobe decomposing pool (8) and oxygen light
Catalytic treatment pond (9) and photocatalysis treatment pond (10), it is characterised in that: described anaerobe decomposing pool (8) bottom is set
It is equipped with water inlet line (6), is provided on water inlet line (6) intake pump (7), be provided with exposure among anaerobe decomposing pool (8)
Feed channel (2), aerated conduit (2) left side connect inlet duct (1), and the internal uniformly dispersing of anaerobe decomposing pool (8) has instead
It answers medium (3), simultaneous oxygen photocatalysis treatment pond (9) setting is on the right side of anaerobe decomposing pool (8), at simultaneous oxygen photocatalysis
It is connected between reason pond (9) and anaerobe decomposing pool (8) by pipeline, pipeline is internally provided with pressure valve (4), described
Photocatalysis treatment pond (10) setting is on the right side of simultaneous oxygen photocatalysis treatment pond (9), at photocatalysis treatment pond (10) and simultaneous oxygen photocatalysis
Pipeline and check valve (5) are provided between reason pond (9).
2. a kind of three-stage photocatalysis composite suspension step biofilm reactor according to claim 1, it is characterised in that
Application method is: sewage is pumped into anaerobe decomposing pool (8) through intake pump (7) from water inlet line (6), and sewage is filled through
In the internal silver metavanadate composite Ti O of anaerobe decomposing pool (8)2/ PP filtrate is filtered, and subsequent inlet duct (1) is logical
Aerated conduit (2) is crossed to be aerated to anaerobe decomposing pool (8), through the microorganism mass propagation in Air Exposure sewage, and
In the internal silver metavanadate composite Ti O of anaerobe decomposing pool (8)2/ PP filter material surface forms the biomembrane of microbial reproduction,
Organic matter is decomposed by biofilm surface biomass, since bulk gas, anaerobe can be generated in decomposable process
The internal pressure rise of decomposing pool (8), to make pressure valve (4) to open, by the sewage of biomembrane material resolution process through pressure
Valve (4) enters in simultaneous oxygen photocatalysis treatment pond (9), since filtrate material is composite material, is suspended into simultaneous oxygen photocatalysis treatment pond
(9) in, while simultaneous oxygen photocatalysis treatment pond (9) surface layer contact sunlight and oxygen, it is divided on simultaneous oxygen photocatalysis treatment pond (9) top
Aerobic bacteria and photocatalysis Decomposition handle sewage, and lower part point does not reach sunlight and air, continue anaerobic digestion and handle sewage, dirty
Water leads to more check valves (5) after processing in simultaneous oxygen photocatalysis treatment pond (9) and enters in photocatalysis treatment pond (10), due to photocatalysis
Larger with oxygen contact surface and sun exposure face in processing pond (10), there is no anaerobic bacterias to handle sewage, the dirt through secondary treatment
Water is through silver metavanadate composite Ti O2/ PP filtrate carries out light-catalyzed reaction, decomposes small molecular weight impurity and forms final process.
3. a kind of three-stage photocatalysis composite suspension step biofilm reactor according to claim 1, it is characterised in that:
The silver metavanadate composite Ti O2/ PP filtrate the preparation method comprises the following steps:
(1) it takes n,N-Dimethylformamide to be added in isopropanol to stir evenly, then butyl titanate is added dropwise, continue stirring until dropwise addition
It finishes, is transferred in hydrothermal reaction kettle and reacts after being added dropwise, filtering, alcohol are washed, dried after being cooled to room temperature, by the product after drying
It is fitted into Muffle furnace and calcines, cooling nano-titanium dioxide；
(2) ammonium metavanadate is added in deionized water, obtains lysate and be stirred, then is molten to nitric acid is added dropwise in lysate
Liquid obtains mixed liquor and is placed in hydrothermal reaction kettle, and standing is cooled to room temperature, and is aged at room temperature, is centrifugated and collects lower layer
Precipitating, by drying precipitate, grinds to obtain silver metavanadate powder；
(3) titanyl sulfate is added in sodium hydroxide solution and is stirred, then epoxychloropropane is added dropwise, obtained prepolymer, take phosphoric acid
Cobalt/composite titania material is added in sodium hydroxide solution, is dispersed with ultrasonic wave, obtains dispersion liquid, pre-polymerization is added in dispersion liquid
It is stirred in object, adds epoxychloropropane, filtered, wash after being cooled to room temperature, is dry, obtaining photocatalysis filler；
(4) it takes photocatalysis filler, silver metavanadate powder to be fitted into and melt blending in instrument is blended, by mixture after being cooled to 40 ~ 50 DEG C
It is fitted into injection molding in injection molding instrument, and under 1 ~ 2MPa pressure, heat preservation 1 ~ 2h of compacting, discharge to obtain silver metavanadate TiO2/ PP biology
Filtrate.
4. a kind of three-stage photocatalysis composite suspension step biofilm reactor according to claim 1, it is characterised in that:
The reaction medium (3) is silver metavanadate composite Ti O2/ PP filtrate.
5. a kind of three-stage photocatalysis composite suspension step biofilm reactor according to claim 1, it is characterised in that:
The sewage is sanitary sewage.
6. a kind of three-stage photocatalysis composite suspension step biofilm reactor according to claim 1, it is characterised in that:
The processing pond is all rectangular processing pond, and anaerobe decomposing pool (8) is seal shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811048601.4A CN109095610A (en) | 2018-09-10 | 2018-09-10 | A kind of three-stage photocatalysis composite suspension step biofilm reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811048601.4A CN109095610A (en) | 2018-09-10 | 2018-09-10 | A kind of three-stage photocatalysis composite suspension step biofilm reactor |
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| Publication Number | Publication Date |
|---|---|
| CN109095610A true CN109095610A (en) | 2018-12-28 |
Family
ID=64865538
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811048601.4A Withdrawn CN109095610A (en) | 2018-09-10 | 2018-09-10 | A kind of three-stage photocatalysis composite suspension step biofilm reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185069A (en) * | 2021-06-12 | 2021-07-30 | 清华大学深圳国际研究生院 | Sewage treatment system and method adopting photocatalysis and microorganism treatment technology |
-
2018
- 2018-09-10 CN CN201811048601.4A patent/CN109095610A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185069A (en) * | 2021-06-12 | 2021-07-30 | 清华大学深圳国际研究生院 | Sewage treatment system and method adopting photocatalysis and microorganism treatment technology |
| CN113185069B (en) * | 2021-06-12 | 2024-01-12 | 清华大学深圳国际研究生院 | Sewage treatment system and method adopting photocatalysis combined microorganism treatment technology |
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Application publication date: 20181228 |