CN107012072A - A kind of photo-biological membrane reactor and the application in sewage disposal, carbon sequestration and microalgae recovery - Google Patents
A kind of photo-biological membrane reactor and the application in sewage disposal, carbon sequestration and microalgae recovery Download PDFInfo
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- CN107012072A CN107012072A CN201710227864.0A CN201710227864A CN107012072A CN 107012072 A CN107012072 A CN 107012072A CN 201710227864 A CN201710227864 A CN 201710227864A CN 107012072 A CN107012072 A CN 107012072A
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- 239000012528 membrane Substances 0.000 title claims abstract description 58
- 239000010865 sewage Substances 0.000 title claims abstract description 28
- 230000000258 photobiological effect Effects 0.000 title claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 9
- 230000009919 sequestration Effects 0.000 title claims abstract description 8
- 238000011084 recovery Methods 0.000 title claims abstract description 7
- 238000003306 harvesting Methods 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- 230000004064 dysfunction Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000008635 plant growth Effects 0.000 claims description 17
- 235000015097 nutrients Nutrition 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 230000009189 diving Effects 0.000 claims description 3
- -1 gauze+dividing plate Polymers 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims description 3
- 239000002054 inoculum Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000007790 scraping Methods 0.000 abstract description 3
- 238000011534 incubation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 52
- 229910002092 carbon dioxide Inorganic materials 0.000 description 24
- 238000000034 method Methods 0.000 description 8
- 239000002351 wastewater Substances 0.000 description 7
- 239000002028 Biomass Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000012010 growth Effects 0.000 description 4
- 238000010672 photosynthesis Methods 0.000 description 4
- 239000010797 grey water Substances 0.000 description 3
- 230000009569 heterotrophic growth Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000005791 algae growth Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/02—Photobioreactors
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/02—Membranes; Filters
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/34—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of gas
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
- C12M47/02—Separating microorganisms from the culture medium; Concentration of biomass
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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Abstract
A kind of photo-biological membrane reactor and the application in sewage disposal, carbon sequestration and microalgae recovery.The photo-biological membrane reactor includes optical-biological reaction system, air distribution system and column air-dissolving air-float harvesting system.The reactor can realize microalgae deep purifying sewage.The membrane material of vertical hanging can utilize vertical space well；Membrane module is greatly improved gas-liquid mass transfer efficiency；The specific arrangement mode of curtain type film assembly farthest reduces the scattering loss of light, it is to avoid energy loss, it is ensured that the microalgae efficient absorption on luminous energy envelope is utilized, and realizes frustule light homogeneity；Microalgae can realize that microalgae low cost green is harvested by simple and mechanical receipts scraping operation on film.Suspension microalgae can realize that the green air-dissolving air-float of low cost is harvested by column air-dissolving air-float harvesting system, while can be by CO2Molten airway dysfunction is integrated into recovering device, and CO is realized by air distribution system and column air-dissolving air-float harvesting system in culture period2Enrichment incubation microalgae.
Description
Technical field
The invention belongs to sewage treatment area, and in particular to a kind of photo-biological membrane reactor and its purification sewage, efficiently solid
The method of carbon and inexpensive microalgae.
Background technology
Traditional wastewater processing is only handled sewage as a kind of discarded object, pollutant, and conventional processes, which exist, stops
The problems such as staying low time length, treatment effeciency, big power consumption and big CO2 emissions.
Microalgae purification sewage has absolute advantage：Microalgae is simple in construction, and photosynthetic efficiency is high, and cultivation cycle is short；Microalgae has
There is the function of the nutrient such as absorption, N, P for consuming in water body environment and Adsorption of Heavy Metals element；The photosynthesis of microalgae is needed
Consume substantial amounts of CO2If, by the CO of power plant emission2For the large-scale cultivation of microalgae, the emission reduction of greenhouse gases can be achieved
Deng.But purifying the harvest of microalgae after sewage turns into one of bottleneck problem, the main method of current microalgae harvesting have filtering, centrifugation and
Flocculation etc..Filtration method production efficiency is very low, film is easily blocked, regenerate or update cost great number, and centrifugal process equipment cost is high, energy consumption
Greatly, large-scale application is not suitable for.
Membrane reactor is to add various fillers in the reactor so that attached growth of microorganisms makes it be formd on filler
One layer of biological structure similar to film constituted, such reactor is referred to as biofilm reactor.Biomembrance process has operation
Stabilization, stronger capacity of resisting impact load, more economical and energy saving, without sludge bulking problem the advantages of, have in sewage disposal
Very big potentiality.If utilizing microalgae film process sewage, it is possible to achieve inexpensive mechanical harvesting microalgae.The microalgae suspended in liquid
Low cost green harvesting can be realized using air supporting harvesting method, while can be by CO2Molten airway dysfunction is integrated into recovering device,
Culture period realizes CO2Enrichment incubation microalgae.
To realize utilization of wastewater resource and CO2Biological high-efficiency fix, solve the problem of small harvest of microalgae individual is difficult,
The present invention devises one kind and realizes that waste water advanced purifying, high-efficiency carbon dioxide are fixed and microalgae low cost harvesting using microalgae technology
Photo-biological membrane reactor.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of photo-biological membrane reactor and its in sewage
Application in processing, efficient carbon sequestration and inexpensive microalgae recovery.
The present invention is achieved by the following technical solutions.
A kind of photo-biological membrane reactor of the present invention includes air distribution system (A), the molten gas-gas of column and floats harvesting system
And optical-biological reaction system (C) (B).
The optical-biological reaction system (C) includes upper flume (13), membrane material suspension holdfast (21), lower flume (17), latent
Water pump (18), timer (19), membrane material (16), plant growth Led light sources (14) and machinery, which are received, scrapes microalgae device (15).Lower water
Groove (17) is connected by immersible pump (18) and pipeline with upper flume (13), timer (19) control immersible pump (18) work, upper water
Groove (13) bottom is provided with ostium excurrens (20), ostium excurrens (20) above the membrane material (16), membrane material (16) vertical hanging in
On membrane material suspension holdfast (21).Plant growth Led light sources (14) provide illumination, and machinery receipts, which scrape microalgae device (15), can carry out machine
Tool is received and scrapes microalgae.Its course of work is：Liquid reaches upper flume (13) by immersible pump (18) in lower flume (17), then from going out
Water aperture (20) reaches membrane material (16), flows into lower flume (17), forms circulation, timer (19) control immersible pump (18) work
Make.Not only graywater nutrient carries out heterotrophic growth but also using plant growth Led light sources (14) and CO to microalgae2Carry out from health
It is long, realize that microalgae can scrape microalgae device (15) with simple and mechanical receipts scraping operation realization by machinery receipts on well growth, most caudacoria
Microalgae low cost green harvesting.
Membrane material (16) material is grid plastics, gauze+dividing plate, cotton, glass fabric, standard cotton cloth etc..
The air distribution system (A) includes air compressor (1), CO2Steel cylinder (2), gas flowmeter one (3), gas flow
Count two (4), distribution tank (5) and gas flowmeter three (7).Air compressor (1), CO2Steel cylinder (2) respectively with distribution tank (5) phase
Even, distribution tank (5) is connected to the molten gas-gas of column by pipeline and floats harvesting system (B), gas flowmeter one (3), gas flowmeter
Two (4), gas flowmeter three (7) control gas flow.Its course of work is：By by air compressor (1), CO2Steel cylinder (2)
It is connected respectively with distribution tank (5), CO is controlled with gas flowmeter one (3)2Flow, gas flowmeter two (4) control air stream
Amount, obtains certain density CO2Mixed gas is simultaneously stored in distribution tank (5), and CO is controlled with gas flowmeter three (7)2Gaseous mixture
The flow of body, and be passed through in the floating harvesting system (B) of the molten gas-gas of the column, efficiently it is dissolved in nutrient solution by microbubble plate (8)
In.
The molten gas-gas of column, which floats harvesting system (B), includes the floating harvest of water inlet (9), delivery port (6), the molten gas-gas of column
Device (10), microbubble plate (8).Microbubble plate (8) is placed on the upside of the bottom that the molten gas-gas of column floats harvesting apparatus (10), device
Left end is water inlet (9), and downside left end is delivery port (6), the upper water of the upper and lower side of device right-hand member respectively with optical-biological reaction system
Groove (13), lower flume (17) are connected, and control current, bottom of device and distribution system with valve one (11) and valve two (12) respectively
The distribution tank (5) of system is connected.Culture period can realize CO2Nutrient solution efficiently is dissolved in, the CO of abundance is provided for microalgae photosynthesis2,
Harvest time can realize inexpensive green air-dissolving air-float harvesting microalgae biomass.
A kind of application of the photo-biological membrane reactor of the present invention in sewage disposal, carbon sequestration and microalgae recovery, by with
Lower step：
A) sewage is injected into the molten gas-gas of column by water inlet (9) and floats harvesting apparatus (10), by 25%~30% inoculum concentration
Access microalgae.
B) plant growth Led light sources (14) are opened, valve two (12) is opened, immersible pump is started by timer (19)
(18) sewage for being vaccinated with microalgae, is conveyed to upper flume (13), sewage reaches film by the ostium excurrens (20) of upper flume (13)
Material (16), membrane material (16) absorbs moisture, and microalgae is attached on membrane material (16), and the specific arrangement mode of membrane material (16) is most
Reduce to big degree the scattering loss of plant growth Led light sources (14), it is ensured that the microalgae efficient absorption profit on coating material (16)
With.
C) start air distribution system and the molten gas-gas of column floats harvesting system (B), culture period opens nutrient solution CO daily2Molten gas
For a period of time, harvest time opens the green harvesting microalgae function of air-dissolving air-float low cost to function.
D) harvest time, scrape microalgae device (15) with simple and mechanical operation by machinery receipts and realize that the inexpensive green of microalgae is adopted
Receive.
E) processing terminates, and treated sewage is discharged from delivery port (6), water inlet (9) refills sewage, and utilizes film
The microalgae remained on material (16) is as seed.
The photo-biological membrane reactor operation signal period is 5~8 days, and the diving pump operation time is 20min, rest
Time is 60min, the culture period CO2The molten airway dysfunction opening time is daily 2~3 times, every time 5~20min, CO2Concentration is
2%~10%.
The advantage of the invention is that：
(1) both graywater nutrient carries out heterotrophic growth to microalgae, realizes waste water advanced purifying；Again using plant growth
The scattering that the specific arrangement mode of Led light sources progress autophyting growth, Led light sources and curtain type film assembly farthest reduces light is damaged
Consumption, it is to avoid energy loss, it is ensured that the microalgae efficient absorption on luminous energy envelope is utilized, solves the problems, such as the culture optical attenuation that suspends, realizes
Frustule light homogeneity.
(2) membrane material vertical hanging, can utilize microalgae on vertical space, film to scrape behaviour by simple and mechanical receipts well
Realize microalgae low cost green harvesting.Membrane module is greatly improved gas-liquid mass transfer efficiency and is conducive in photosynthesis
Dissolved oxygen is desorbed in time.
(3) air distribution system and the molten gas-gas of column, which float harvesting system, can ensure Xie Jiafu CO in the training period2Mode, interval
Property is by CO2Mixing air is passed through the molten gas-gas of pillar and floats harvesting system, is realized under high water pressure condition and greatly improves CO2In waste water
Dissolubility and help the efficient carbon sequestration of microalgae；Harvest time, air is passed through pillar gas-gas and floats harvesting system, microalgae small volume, pole
The microbubble escaped in microbubble plate is liable to stick to, then because bubble buoyancy effect microalgae is enriched in the floating receipts of the molten gas-gas of column
The surface of system is obtained, the microalgae biomass in the floating harvest suspension of the green molten gas-gas of low cost is realized.
Brief description of the drawings
Fig. 1 is the photo-biological membrane reactor front view of the present invention.Wherein, 1 it is air compressor, 2 is CO2Steel cylinder, 3 are gas
Flowmeter body one, 4 is that gas flowmeter two, 5 is distribution tank, 6 is delivery port, 7 is that gas flowmeter three, 8 is microbubble plate, 9
For water inlet, 10 be the molten gas-gas of column float harvesting apparatus, 11 be that valve one, 12 is that valve two, 13 is upper flume, 14 is plant
Growth Led light sources, 15 be machinery receive scrape microalgae device, 16 be membrane material, 17 be lower flume, 18 be immersible pump, 19 be timer.
A is that air distribution system, B are that to float harvesting system, C be optical-biological reaction system to the molten gas-gas of column.
Fig. 2 is the top view of the optical-biological reaction system (C) of photo-biological membrane reactor, represents point of membrane material and Led lamps
Cloth situation.14 it is plant growth Led light sources, 20 be ostium excurrens, 21 is membrane material suspension holdfast.
Fig. 3 is micro algae growth situation map on different membrane materials.22 be grid plastics, and 23 be gauze+dividing plate, and 24 be cotton,
25 glass fabrics, 26 be standard cotton cloth.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment.
Device described in the present embodiment includes air distribution system A, the molten gas-gas of column and floats harvesting system B and optical-biological reaction system
Unite C.
The optical-biological reaction system C includes upper flume 13, membrane material suspension holdfast 21, lower flume 17, immersible pump 18, fixed
When device 19, membrane material 16, plant growth Led light sources 14 and machinery receive scrape microalgae device 15.Lower flume 17 by immersible pump 18 and
Pipeline is connected with upper flume 13, and the control immersible pump 18 of timer 19 works, and the bottom of upper flume 13 is provided with ostium excurrens 20, and water outlet is small
Hole 20 is in the top of membrane material 16, and the vertical hanging of membrane material 16 is on membrane material suspension holdfast 21.Plant growth Led light sources 14 are provided
Illumination, machinery receive scrape microalgae device 15 can carry out machinery receive scrape microalgae.Its course of work is：Liquid passes through diving in lower flume 17
Pump 18 reaches upper flume 13, then reaches membrane material 16 from ostium excurrens 20, flows into lower flume 17, forms circulation, timer 19
Control immersible pump 18 works.Not only graywater nutrient carries out heterotrophic growth but also using the He of plant growth Led light sources 14 to microalgae
CO2Autophyting growth is carried out, realizes and well grows, microalgae can be scraped microalgae device 15 by machinery receipts and be received with simple and mechanical on most caudacoria
Scraping operation realizes microalgae low cost green harvesting.
The material of membrane material 16 is grid plastics, gauze+dividing plate, cotton, glass fabric, standard cotton cloth etc..
The air distribution system A includes air compressor 1, CO2Steel cylinder 2, gas flowmeter 1, gas flowmeter 24, match somebody with somebody
Gas tank 5 and gas flowmeter 37.Air compressor 1, CO2Steel cylinder 2 is connected with distribution tank 5 respectively, and distribution tank 5 is connected by pipeline
It is connected to the molten gas-gas of column and floats harvesting system B, gas flowmeter 1, gas flowmeter 24, the control gas of gas flowmeter 37
Flow.Its course of work is：By by air compressor 1, CO2Steel cylinder 2 is connected with distribution tank 5 respectively, uses gas flowmeter
One 3 control CO2Flow, the control air mass flow of gas flowmeter 24, obtains certain density CO2Mixed gas is simultaneously stored in distribution
In tank 5, CO is controlled with gas flowmeter 372The flow of mixed gas, and it is passed through the floating harvesting system B of the molten gas-gas of the column
In, efficiently it is dissolved in by microbubble plate 8 in nutrient solution.
The molten gas-gas of column, which floats harvesting system B, includes the floating harvesting apparatus of water inlet 9, delivery port 6, the molten gas-gas of column
10th, microbubble plate 8.It is water inlet that microbubble plate 8, which is placed in left end on the upside of the bottom that the molten gas-gas of column floats harvesting apparatus 10, device,
9, downside left end is delivery port 6, the upper and lower side of device right-hand member upper flume 13 respectively with optical-biological reaction system, the phase of lower flume 17
UNICOM, respectively with valve 1 and the control current of valve 2 12, the distribution tank 5 of bottom of device and air distribution system is connected.Culture
Phase can realize CO2Nutrient solution efficiently is dissolved in, the CO of abundance is provided for microalgae photosynthesis2, harvest time can be realized inexpensive green molten
Gas air supporting harvesting microalgae biomass.
Application of the present invention in Wastewater from Pig Farm processing.
Wastewater from Pig Farm is injected into the molten gas-gas of column by water inlet 9 and floats harvesting apparatus 10, is accessed by 25% inoculum concentration small
Ball algae；Plant growth Led light sources 14 are opened, valve 2 12 is opened, immersible pump 18 are started by timer 19, into upper flume 13
Conveying is vaccinated with the sewage of microalgae, and sewage reaches membrane material 16 by the ostium excurrens 20 of upper flume, and membrane material absorbs moisture, micro-
Algae is attached on membrane material, and the specific arrangement mode of membrane material farthest reduces the scattering loss of plant growth Led light sources,
Ensure that the microalgae efficient absorption on envelope is utilized, dive under water pump work 20min, rest 60min；Start air distribution system A and column is molten
Gas-gas floats harvesting system B, nutrient solution CO is opened daily within the 1st~4 day2Molten airway dysfunction 2 times, each 10min so that 5%CO2Borrow
Microbubble plate 8 is helped efficiently to be dissolved in nutrient solution.Terminate culture within 5th day, microalgae device 15 is scraped with simple and mechanical behaviour by machinery receipts
Microalgae low cost green harvesting is realized, harvesting microalgae concentration is up to 5.65 ± 0.49g/L；Open air supporting low cost green harvest
Microalgae biomass in microalgae function, harvesting suspension；Clear water, COD, total phosphorus, total nitrogen, ammonia nitrogen are discharged from delivery port 6
Clearance up to 95.67%, 64.40%, 69.55% and 91.24%, refills sewage respectively, is remained using on membrane material 16
Microalgae as seed enter next process cycle.
Claims (4)
1. a kind of photo-biological membrane reactor, it is characterized in that floating harvesting system (B) and light including air distribution system (A), the molten gas-gas of column
Bio-reaction system (C)；
The optical-biological reaction system (C) includes upper flume (13), membrane material suspension holdfast (21), lower flume (17), immersible pump
(18), timer (19), membrane material (16), plant growth Led light sources (14) and machinery, which are received, scrapes microalgae device (15)；Lower flume
(17) it is connected by immersible pump (18) and pipeline with upper flume (13), timer (19) control immersible pump (18) work, upper flume
(13) bottom is provided with ostium excurrens (20), and ostium excurrens (20) is above membrane material (16), and membrane material (16) vertical hanging is in film
On material suspension holdfast (21)；Plant growth Led light sources (14) provide illumination, and machinery receipts, which scrape microalgae device (15), can carry out machinery
Receipts scrape microalgae；
The air distribution system (A) includes air compressor (1), CO2Steel cylinder (2), gas flowmeter one (3), gas flowmeter two
(4), distribution tank (5) and gas flowmeter three (7)；Air compressor (1), CO2Steel cylinder (2) is connected with distribution tank (5) respectively, matches somebody with somebody
Gas tank (5) is connected to the molten gas-gas of column by pipeline and floats harvesting system (B), gas flowmeter one (3), gas flowmeter two
(4), gas flowmeter three (7) control gas flow；
The molten gas-gas of column, which floats harvesting system (B), includes the floating harvesting apparatus of water inlet (9), delivery port (6), the molten gas-gas of column
(10), microbubble plate (8)；Microbubble plate (8) is placed in left end on the upside of the bottom that the molten gas-gas of column floats harvesting apparatus (10), device
For water inlet (9), downside left end is delivery port (6), the upper flume of the upper and lower side of device right-hand member respectively with optical-biological reaction system
(13), lower flume (17) is connected, and controls current, bottom of device and air distribution system with valve one (11) and valve two (12) respectively
Distribution tank (5) be connected.
2. a kind of photo-biological membrane reactor according to claim 1, it is characterized in that the membrane material (16) material is grid
Plastics, gauze+dividing plate, cotton, glass fabric or standard cotton cloth.
3. application of the photo-biological membrane reactor in sewage disposal, carbon sequestration and microalgae recovery described in claim 1, it is characterized in that
According to the following steps：
A) sewage is injected into the molten gas-gas of column by water inlet (9) and floats harvesting apparatus (10), accessed by 25%~30% inoculum concentration
Microalgae；
B) plant growth Led light sources (14) are opened, valve two (12) is opened, immersible pump (18) is started by timer (19), to
Upper flume (13) conveys the sewage for being vaccinated with microalgae, and sewage reaches membrane material by the ostium excurrens (20) of upper flume (13)
(16), membrane material (16) absorbs moisture, and microalgae is attached on membrane material (16), the specific arrangement mode maximum journey of membrane material (16)
Reduce the scattering loss of plant growth Led light sources (14) in degree ground, it is ensured that the microalgae efficient absorption on coating material (16) is utilized；
C) start air distribution system and the molten gas-gas of column floats harvesting system (B), culture period opens nutrient solution CO daily2Molten airway dysfunction one
Section time, harvest time opens the green harvesting microalgae function of air-dissolving air-float low cost；
D) harvest time, by machinery receipts scrape microalgae device (15) with it is simple and mechanical operation realize microalgae low cost green harvest；
E) processing terminates, and treated sewage is discharged from delivery port (6), water inlet (9) refills sewage, and utilizes membrane material
(16) microalgae remained on is as seed.
4. application of the photo-biological membrane reactor according to claim 3 in sewage disposal, carbon sequestration and microalgae recovery, it is special
It is that the photo-biological membrane reactor operation signal period is 5~8 days to levy, and the diving pump operation time is 20min, time of having a rest
For 60min, the culture period CO2The molten airway dysfunction opening time is daily 2~3 times, every time 5~20min, CO2Concentration be 2%~
10%.
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