CN105621631A - Bioremediation device and method for continuously adsorbing metal ions by adopting active yeast - Google Patents
Bioremediation device and method for continuously adsorbing metal ions by adopting active yeast Download PDFInfo
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- CN105621631A CN105621631A CN201610055468.XA CN201610055468A CN105621631A CN 105621631 A CN105621631 A CN 105621631A CN 201610055468 A CN201610055468 A CN 201610055468A CN 105621631 A CN105621631 A CN 105621631A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/347—Use of yeasts or fungi
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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Abstract
The invention discloses a bioremediation device and method for continuously adsorbing metal ions by adopting active yeast. Liquid matrix and yeast cell suspension are cultured in a biomass culture module, an adsorption reaction module pumps biomass oil obtained through culture into a bidirectional fluidized adsorption tubular column of the adsorption reaction module, and metal ion solution, acid liquor and matrix culture solution in a metal solution storage tank, an acid liquor storagent tank and a matrix storage tank are respectively pumped into the bidirectional fluidized adsorption tubular column, a separating and recycling modules is used for collecting solution after metals are adsorbed in the bidirectional fluidized adsorption tubular column and separating and recycling the metals, and yeast cells are introduced into the biomass culture module to be used again. The bioremediation device and method which are disclosed by the invention have the advantages that the yeast cells are cultured to the highest growth rate in a bioreactor and are directly applied to heavy metal wastewater treatment, so that maximum adsorption capability of the yeast cells is guaranteed, and adsorption area can be further increased by the suspended and dispersed yeast cells; meanwhile, the used yeast cell suspension can be recycled in time, so that not only treatment effect is improved, but also running cost is reduced, and the aims of high efficiency and economy are achieved.
Description
Technical field
The present invention relates to heavy metal-containing wastewater treatment field, be specifically related to a kind of biological restoration device and method.
Background technology
In recent years, along with socioeconomic development, industry still occupies main status on Chinese society market, plating, mining, metallurgy, intermetallic composite coating, Chemical Manufacture, Fossil fuel burning etc. all produce a large amount of industrial wastewater containing heavy metal, under the effect of nature and artificial disturbance, enter water body, destroy quality of water environment. This element necessary to biological growth of part heavy metal element, but major part has toxicity and is cancerigenic factor, there is disguise, chronicity and irreversibility, it is the element type pollutant of a class conservative, non-degradable, aquatile is had teratogenesis, carcinogenic, lethal harm, excessive emissions is easily destroyed ecological balance in environment water, and by food chain enrichment harm ecosystem and human health, thus the heavy metal pollution of water body is all the problem of environmental pollution of researcher special concern for a long time.
The heavy metal pollution problem of Water-environment Ecological System is day by day serious, and process means are also constantly subjected to common concern. Traditional heavy metal containing wastewater treatment technology includes chemical precipitation method, CAM, ion exchange, evaporation etc., but generally has difficult low concentration wastewater, easily causes the shortcomings such as secondary pollution. Compared to traditional Treatment process, bioremediation Technology has that cost is low, is suitable to process the advantage such as low concentration wastewater, non-secondary pollution. Beer yeast cells is as a kind of good biological adsorption agent, and the immobilization technology of yeast cells is extensively carried out in the improvement of heavy metal wastewater thereby. But, although the immobilization technology of biological cell can remove the heavy metal in waste water by active adsorption, reduce secondary pollution, but still suffer from fixed base and blame to clean and recycle, and the problem such as the contact area of immobilization biological cell and waste water is limited, relatively costly and treatment effect is not satisfactory.
At present, fixed yeast cell treatment technology still needs to separately performed to production and the adsorption process of adsorbate, it is impossible to realize producing absorption biomass and carrying out adsorbing continuous service system simultaneously. There are some researches show, optimum adsorbent needs maximum surface area, and this surface area requirements biological cell has higher growth rate, fixed yeast cell treatment technology cannot realize directly and quickly being used for the yeast cells under the highest growth rate adsorption process, and then adsorption can be produced impact.
Summary of the invention
Goal of the invention: present invention aims to the deficiencies in the prior art, there is provided a kind of sustainable biological restoration device and method adopting active yeast to continue adsorbing metal ions removing heavy metals in industrial wastewater ion efficiently, it is possible to increase water quality also recycles heavy metal.
Technical scheme: the invention provides a kind of biological restoration device adopting active yeast to continue adsorbing metal ions, it is characterized in that: the biomass including being linked in sequence cultivate module, adsorption reaction module and separation and recovery module, described adsorption reaction module includes connecting biomass and cultivates module and be simultaneously connected with metallic solution storage tank, the two-way fluidisation adsorption tube post of acid liquor storage tank and substrate storage tank, the bottom of described two-way fluidisation adsorption tube post is provided with aeration cleaning module, described aeration cleaning module includes the gas tank being connected described two-way fluidisation adsorption tube post by effusion meter, described separation and recovery module includes the sedimentation tank being sequentially connected with, metal separating device, activated yeast device, yeast-inoculated liquid culture apparatus also takes back described biomass cultivation module.
Further, described biomass are cultivated module and are included being connected to the biomass cultivation reactor of fluid matrix storage tank, and described biomass are cultivated in reactor and are provided with agitator.
Further, the gas tank of described aeration cleaning module connects described biomass also by another effusion meter and cultivates reactor, leads to and is provided with gas cleaning plant between gas tank and the effusion meter of described biomass cultivation reactor.
Further, described two-way fluidisation adsorption tube post is the cylindrical tube including three layers post jamb, space ecto-entad in pipe is in turn divided into outside guiding region, air injects annulus and internal diversion district, and described air injects the outer wall of annulus and is provided with aerojet vortex tube.
A kind of biological renovation method adopting active yeast to continue adsorbing metal ions, fluid matrix and yeast cells suspension are cultivated in module in biomass and are cultivated, adsorption reaction module is by the two-way fluidisation adsorption tube post cultivating the bio-matrix suction adsorption reaction module obtained, described two-way fluidisation adsorption tube post suction metallic solution storage tank respectively simultaneously, metal ion solution in acid liquor storage tank and substrate storage tank, acid solution and substrate culture fluid, aeration cleaning module controls gas tank by gas flowmeter and enters the air capacity in described two-way fluidisation adsorption tube post, separate and recover the solution after adsorbing metal in two-way fluidisation adsorption tube post described in module collection, pass through sedimentation tank, top overflow water outlet, bottom precipitation enter metal separating device carry out metal be separated and recovered from utilize, yeast cells then goes successively to the activation of activated yeast device, import after cultivating again through yeast-inoculated liquid culture apparatus in described biomass cultivation module and reuse.
Further, heavy metal-containing waste water separately flows into the outside guiding region pipe and internal diversion district from the top of described two-way fluidisation adsorption tube post, the air that the described aeration cleaning module of lower end injects a gas between outside guiding region and internal diversion district injects annulus, inject in the liquid of guiding region, inside and outside portion again through aerojet vortex tube, liquid is made to form fluidized state, so that the cluster of grains coalescence precipitation in adsorption column, yeast cells floats on a liquid, thus increasing the contact area of yeast cells and metal ion, reach optimal adsorption concentration.
Further, described biomass are cultivated module and are provided with fluid matrix storage tank, and fluid matrix enters biomass by suction pump and cultivates reactor and be stirred cultivating by agitator.
Further, described biomass cultivation reactor and two-way fluidisation adsorption tube post work simultaneously, it is achieved the online production of yeast cells suspension, and continue to provide yeast cells suspension to adsorb the heavy metal ion in waste water efficiently.
Preferably, described biomass cultivate the specific growth rate that in reactor, yeast cells is maximum is 0.0996h-1, it is 1.4L/min that the gas of the biomass cultivation reactor of 1.5L passes into speed, and material effluent stream speed is 2.37mL/min, to maintain liquid level stabilizing.
Preferably, in described two-way fluidisation adsorption tube post, the optimal adsorption concentration of yeast cells suspension is 2.8g/L.
Beneficial effect: the present invention is directly used in the process of heavy metal wastewater thereby when yeast cells is cultured to the highest growth rate in bioreactor, both ensure that the absorbability that yeast cells is maximum, and the yeast cells of suspended dispersed more can increase adsorption area; Meanwhile, used yeast cells suspension can recycle Posterior circle in time and utilize, and had both improve treatment effect, and had reduced again operating cost, and had reached the purpose of high-efficiency and economic.
Accompanying drawing explanation
Fig. 1 is the structural representation of biological restoration device of the present invention;
Fig. 2 is the cross sectional representation of two-way fluidisation adsorption tube post;
Fig. 3 is yeast cell growth curve chart (chain-dotted line is matching yeast cells optimum growh rate curve);
Fig. 4 is Cu under different initial concentration+And Pb+Removal efficiency curve;
Fig. 5 is initial concentration is the Cu of 5mg/L+And Pb+Removal efficiency curve in 30h.
Detailed description of the invention
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment: a kind of active yeast of the present embodiment continues the biological restoration device of adsorbing metal ions, as it is shown in figure 1, include biomass to cultivate modules A, adsorption reaction module B, aeration cleaning module C and separation and recovery module D. Biomass are cultivated modules A and are provided with fluid matrix storage tank 1, and fluid matrix enters biomass by suction pump 2 and cultivates reactor 3, make liquid be full of the 4/5 of container, by agitator 4 stir culture. The preparation of yeast cells suspension: yeast-inoculated liquid prepared by transfer activity dry yeast to the 500mL arrow-necked bottle containing aseptic substrate, at 25 DEG C, arrow-necked bottle is placed in and shakes speed for the shaking table of 200rpm is cultivated, obtain yeast cells suspension when exponential phase (after the cultivating 14-18h) of yeast cell growth, and be inoculated in 1.5L biomass cultivation reactor 3; Additionally, this reactor 3 stirs at 200 rpm, and at room temperature pass into the gas of 1.4L/min. Fluid matrix is made up of the glucose of 18g/L, the peptone of 4.5g/L, the yeast extract of 2.9g/L and the Fructus Hordei Germinatus extract of 2.9g/L, and the final concentration that obtains is approximately the biomass solution of 2.8g/L.
Adsorption reaction module B is the two-way fluidisation adsorption tube post 6 being connected to metallic solution storage tank 21, acid liquor storage tank 19 and substrate storage tank 20, as shown in Figure 2, two-way fluidisation adsorption tube post 6 is cylindrical tube, it is provided with three layers post jamb, space ecto-entad in pipe is in turn divided into outside guiding region 30 by post jamb, air injects annulus 31 and internal diversion district 29, and air injects the outer wall of annulus 31 and is provided with aerojet vortex tube 10.
When in biomass cultivation reactor 3, biomass solution concentration reaches about 2.8g/L, suction pump 2,5 delivers fluid matrix simultaneously respectively and to reactor 3 and biomass solution is transferred to the two-way fluidisation adsorption tube post of 1.2L, reactor 3 needs to maintain yeast cells stable exponential growth, when yeast cells reaches maximum particular growth speed 0.0996h-1Time, making biomass outflow reactor 3, coutroi velocity is 2.37mL/min. The two-way fluidisation adsorption tube post 6 of bio-matrix suction that adsorption reaction module B will be cultivated by suction pump 5, the acid solution simultaneously extracted in metallic solution storage tank 21 in metal ion solution, acid liquor storage tank 19 respectively by suction pump 22,17,18 and the substrate culture fluid in substrate storage tank 20, to absorption tubing string 6, liquid level of solution reaches 4/5 place of master container. Concrete, the preparation of metal ion solution: Cu and Pb is target affinity metal, Cu2+And Pb2+The preparation of storing solution is respectively adopted CuSO4-5H2O solution and Pb (NO3)2Solution; Acid solution adopts the NaOH solution mixed preparing of HCL and the 1.8mol/L of 1.8mol/L, until obtaining best PH is 5.6 (for Cu) and the acid solution of 5.1 (for Pb), substrate culture fluid is conventional yeasts cellular matrix culture fluid.
Aeration cleaning module C includes gas tank 14, gas tank 14 connects biomass respectively through two effusion meters 13,16 and cultivates the bottom of reactor 3 and the bottom of two-way fluidisation adsorption tube post 6, controlling, by effusion meter 16,13, the air capacity that gas tank 14 enters in reactor 3 and absorption tubing string 6 respectively is 1.4L/min, passes into gas in reactor 3 and adopts gas cleaning plant 15 to purify. Effusion meter 13 injects a gas into the air injection annulus 31 in two-way fluidisation adsorption tube post 6 in the middle of guiding region, inside and outside portion 29,30, inject in solution again through aerojet vortex tube 10, form fluidized state, cause that liquid produces disturbance, yeast cells can be in suspended state with current, adds the contact area of yeast cells and heavy metal wastewater thereby.
First sedimentation tank the 23, second sedimentation tank 24 that separation and recovery module D includes being sequentially connected with, metal separating device 25, activated yeast device 26, yeast-inoculated liquid culture apparatus 27, wherein the first sedimentation tank 23 connects the bottom of two-way fluidisation adsorption tube post 6, and yeast-inoculated liquid culture apparatus 27 takes back biomass and cultivates reactor 3. Separation and recovery module D collects the solution after adsorbing metal, by the first sedimentation tank 23 and the second sedimentation tank 24, top overflow water outlet, bottom precipitation enters metal separating device 25, the metal recovery separated utilizes, yeast cells then enters activated yeast device 26 and activates, and is reused by suction pump 28 suction reactor 3 after cultivating again through yeast-inoculated liquid culture apparatus 27.
Measure sample and be taken from metallic solution storage tank 21, adsorbent fluidization post sample tap 7 and secondary precipitation groove water outlet place:
Obtaining Fig. 3 yeast cell growth curve chart, obtain yeast cells maximum growth rate by curve matching, taking the biomass solution concentration under yeast cells maximum growth rate is 2.8g/L;
Obtaining Fig. 4 and seek the curve chart of the metal ion Cu under different initial concentration and Pb removal effect, show the increase along with initial concentration in figure, metal ion removal effect is gradually reduced, but tends towards stability level after reaching finite concentration;
Obtain Fig. 5 and choose the initial concentration Cu of 5mg/L+And Pb+Removal efficiency curve chart in 30h, shows in figure, Cu+And Pb+The fluctuation of initial clearance is relatively big, and the later stage tends towards stability gradually, but it is more stable totally to remove situation, and clearance is higher, and Adsorption effect is better.
Claims (10)
1. one kind adopts the biological restoration device that active yeast continues adsorbing metal ions, it is characterized in that: the biomass including being linked in sequence cultivate module, adsorption reaction module and separation and recovery module, described adsorption reaction module includes connecting biomass and cultivates module and be simultaneously connected with metallic solution storage tank, the two-way fluidisation adsorption tube post of acid liquor storage tank and substrate storage tank, the bottom of described two-way fluidisation adsorption tube post is provided with aeration cleaning module, described aeration cleaning module includes the gas tank being connected described two-way fluidisation adsorption tube post by effusion meter, described separation and recovery module includes the sedimentation tank being sequentially connected with, metal separating device, activated yeast device, yeast-inoculated liquid culture apparatus also takes back described biomass cultivation module.
2. the biological restoration device adopting active yeast to continue adsorbing metal ions according to claim 1, it is characterized in that: described biomass are cultivated module and included being connected to the biomass cultivation reactor of fluid matrix storage tank, and described biomass are cultivated in reactor and are provided with agitator.
3. the biological restoration device adopting active yeast to continue adsorbing metal ions according to claim 2, it is characterized in that: the gas tank of described aeration cleaning module connects described biomass also by another effusion meter and cultivates reactor, leads to and is provided with gas cleaning plant between gas tank and the effusion meter of described biomass cultivation reactor.
4. the biological restoration device adopting active yeast to continue adsorbing metal ions according to claim 1, it is characterized in that: described two-way fluidisation adsorption tube post is the cylindrical tube including three layers post jamb, space ecto-entad in pipe is in turn divided into outside guiding region, air injects annulus and internal diversion district, and described air injects the outer wall of annulus and is provided with aerojet vortex tube.
5. one kind adopts the biological renovation method that active yeast continues adsorbing metal ions, it is characterized in that: fluid matrix and yeast cells suspension are cultivated in module in biomass and cultivated, adsorption reaction module is by the two-way fluidisation adsorption tube post cultivating the bio-matrix suction adsorption reaction module obtained, described two-way fluidisation adsorption tube post suction metallic solution storage tank respectively simultaneously, metal ion solution in acid liquor storage tank and substrate storage tank, acid solution and substrate culture fluid, aeration cleaning module controls gas tank by gas flowmeter and enters the air capacity in described two-way fluidisation adsorption tube post, separate and recover the solution after adsorbing metal in two-way fluidisation adsorption tube post described in module collection, pass through sedimentation tank, top overflow water outlet, bottom precipitation enter metal separating device carry out metal be separated and recovered from utilize, yeast cells then goes successively to the activation of activated yeast device, import after cultivating again through yeast-inoculated liquid culture apparatus in described biomass cultivation module and reuse.
6. the biological renovation method adopting active yeast to continue adsorbing metal ions according to claim 5, it is characterized in that: the air that described aeration cleaning module injects a gas between outside guiding region and internal diversion district injects annulus, inject in the liquid of guiding region, inside and outside portion again through aerojet vortex tube, liquid is made to form fluidized state, so that the cluster of grains coalescence precipitation in adsorption column.
7. the biological renovation method adopting active yeast to continue adsorbing metal ions according to claim 5, it is characterized in that: described biomass are cultivated module and are provided with fluid matrix storage tank, fluid matrix enters biomass by suction pump and cultivates reactor and be stirred cultivating by agitator.
8. the biological renovation method adopting active yeast to continue adsorbing metal ions according to claim 7, it is characterised in that: described biomass cultivate reactor and two-way fluidisation adsorption tube post works simultaneously.
9. the biological renovation method adopting active yeast to continue adsorbing metal ions according to claim 7, it is characterised in that: it is 0.0996h that described biomass cultivate the specific growth rate that in reactor, yeast cells is maximum-1, it is 1.4L/min that the gas of the biomass cultivation reactor of 1.5L passes into speed, and material effluent stream speed is 2.37mL/min.
10. the biological renovation method adopting active yeast to continue adsorbing metal ions according to claim 5, it is characterised in that: in described two-way fluidisation adsorption tube post, the optimal adsorption concentration of yeast cells suspension is 2.8g/L.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244892A (en) * | 1998-03-03 | 1999-09-14 | Tax Adm Agency | Treatment of oil-containing waste water |
| CN101851588A (en) * | 2009-04-01 | 2010-10-06 | 中国海洋大学 | Culture method for improving adsorption capacity of zygosaccharomyces rouxii heavy metal cadmium |
| CN102701511A (en) * | 2011-03-28 | 2012-10-03 | 上海鑫洲生物科技有限公司 | Method and apparatus for wastewater treatment and heavy metal recycling by non-stationary type bio-adsorbent |
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- 2016-03-18 CN CN201610055468.XA patent/CN105621631B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244892A (en) * | 1998-03-03 | 1999-09-14 | Tax Adm Agency | Treatment of oil-containing waste water |
| CN101851588A (en) * | 2009-04-01 | 2010-10-06 | 中国海洋大学 | Culture method for improving adsorption capacity of zygosaccharomyces rouxii heavy metal cadmium |
| CN102701511A (en) * | 2011-03-28 | 2012-10-03 | 上海鑫洲生物科技有限公司 | Method and apparatus for wastewater treatment and heavy metal recycling by non-stationary type bio-adsorbent |
Non-Patent Citations (1)
| Title |
|---|
| B.VOLESKY ET AL: ""Cadmium Biosorption by Saccharomyces cerevisiae"", 《BIOTECHNOLOGY AND BIOENGINEERING》 * |
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