CN102533714B - Solid photosynthetic bacteria particle and preparation method thereof - Google Patents
Solid photosynthetic bacteria particle and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a solid photosynthetic bacteria particle and a preparation method thereof, which belong to the technical field of environment protection and solve the problems that an existing solid photosynthetic bacteria particle is complicated in preparation method, the prepared solid photosynthetic bacteria particle is low in concentration degree, large in bacteria loss in a settlement process caused by the fact that the prepared solid photosynthetic bacteria particle is diffused immediately while being put in water, small in diffusing area after the prepared solid photosynthetic bacteria particle is put in water and low in purification efficiency. The prepared solid photosynthetic bacteria particle comprises, by weight, 900 to 1000 parts of zeolite powder, 30 to 50 parts of bentonite and 1000 parts of photosynthetic bacteria fluid.
Description
Technical field
The present invention relates to solid photosynthetic bacteria particle and preparation method thereof, belong to environmental technology field.
Background technology
To be a class carry out photosynthetic microorganism as the energy, the organism that can utilize occurring in nature under anaerobism illumination or aerobic dark condition, sulfide, ammonia etc. as the hydrogen donor carbon source of holding concurrently with light to photosynthetic bacterium (Photosynthetic bacteria, PSB).according to " the outstanding Bacteria Identification handbook of uncle (1974 the 8th edition) is classified the photosynthetic photosynthetic bacterium of non-oxygen-production as Bacteriophyta eubacterium guiding principle Rhodospirillales (Rhodospirillales), Bacteriophyta eubacterium guiding principle Rhodospirillales is divided into down again Rhodospirillineae (Rhodospirillineae) and green bacterium suborder (Chlorobiineae), be divided into Rhodospirillaceae (Rhodospirillaceae) and Chromatiaceae (Chlorobiaceae) under Rhodospirillineae, be divided into green thiobacillus (Chlorobiaceae) and green thread bacillus (Chloroflexaceae) totally 18 genus under green bacterium suborder, approximately 45 kinds.The photosynthetic bacterium toxic substances such as nitrite in water body, sulfide of degrading can be restrained oneself the organic waste water of high density, and phenol cyanogen etc. is had certain capacity of decomposition, make it have the irreplaceable advantage of other microorganism aspect water treatment.But the thalline of photosynthetic bacterium is less, and the natural subsidence difficulty exists thalline to run off and two defectives of solid-liquid separation in application.Therefore, just need to constantly cultivate and add new fresh thalli when practical application, also need to carry out the work for the treatment of of solid-liquid separation, cause processing technological flow complicated, increase processing cost, have a strong impact on its application prospect.In order to improve the effective rate of utilization of photosynthetic bacterium, produced thus the photosynthetic bacterium curing technology.The photosynthetic bacterium curing technology is by certain technique means, photosynthetic bacterium to be fixed on carrier, avoids thalline to run off, and improves the thalline utilization ratio, simplifies treatment process, enlarges its range of application.Need to select suitable immobilization material as carrier in the process of fixing photosynthetic bacterium, photosynthetic bacterium is fixed on carrier, and keep biological activity.That uses at present mainly contains absorption method, crosslinking, entrapping method.Wherein, absorption method is to rely on molecular force, hydrophobic force or ion bonding force between carrier and thalline that both are combined, and the method is simple to operate, and reaction conditions is gentle, does not affect cytoactive, has good production application prospect.Inorganic or the organic materials of the many employings of sorbing material, such as: zeolite, porous ceramics, soft fiber etc.
The technology of preparing of present existing solid photosynthetic bacteria particle has: utilize the inorganic materials such as zeolite powder, slag to be combined with photosynthetic bacterium; Utilize the organic materialss such as sodium alginate, agar to be combined with photosynthetic bacterium; Utilize biomaterial such as active sludge and photosynthetic bacterium crosslinked.As: application number is 200610018362.9, and denomination of invention discloses the process for fixation of a kind of photosynthetic bacterium for the Chinese patent application of " process for fixation of photosynthetic bacterium ".It is 120～200 purpose zeolite powders that the method is selected granularity, be that to add viscosity be sodium alginate and the photosynthetic bacterium concentrated solution of 500～1000mpas for 1: 0.03～0.05: 0.2～0.3 ratio in mass ratio, mixed mixing thoroughly granulated, and is placed in the CaCl that concentration is 20～40g/L
2Harden in solution, get finished product after the clear water rinsing.In this inventive method, the preparation process longer duration, the product water content that obtains is high, and CaCl
2Large on the microbial activity impact, the solid photosynthetic bacteria particle for preparing is bonding not tight, and in settling process, thalline runs off large, the solid photosynthetic bacteria particle concentrating degree is inadequate, the contained photosynthetic bacterium comparatively small amt of unit volume is dispersed area after the input water body little, and purification efficiency is on the low side.
Summary of the invention
Main purpose of the present invention is to provide a kind of solid photosynthetic bacteria particle and preparation method thereof.The technical problem that the present invention solves is that the preparation method of existing solid photosynthetic bacteria particle is loaded down with trivial details, the solid photosynthetic bacteria particle concentrating degree for preparing is lower, begin immediately after in aborting to disperse and cause the settling process thalline to run off greatly, disperse area little after dropping into water body, purification efficiency is on the low side.
The invention provides a kind of solid photosynthetic bacteria particle, be grouped into by the one-tenth of following weight proportioning: 1000 parts of 900～1000 parts of zeolite powders, 30～50 parts of wilkinites and photosynthetic bacteria liquids.
Preferably, above-mentioned solid photosynthetic bacteria particle is grouped into by the one-tenth of following weight proportioning: 1000 parts of 950 parts of zeolite powders, 30 parts of wilkinites and photosynthetic bacteria liquids.
Wherein, the preferred Rhodopseudomonas of above-mentioned photosynthetic bacterium (Rhodopseudomonas) photosynthetic bacterium.
Wherein, the preferred sodium bentonite of above-mentioned wilkinite.
Wherein, the concentration of above-mentioned photosynthetic bacteria liquid is 20～5,000,000,000/mL.
The present invention also provides the preparation method of solid photosynthetic bacteria particle, comprises the steps:
A, zeolite powder is joined in photosynthetic bacteria liquid, stir, filter, the preparation water content is at 50～60% photosynthetic bacterium concentrated solution;
B, zeolite powder, wilkinite are joined in the photosynthetic bacterium concentrated solution that step a obtains, stir preparation photosynthetic bacterium material;
C, the photosynthetic bacterium material that step b is obtained carry out granulation, namely get solid photosynthetic bacteria particle.
Wherein, the weight proportion of above-mentioned zeolite powder, wilkinite, photosynthetic bacteria liquid is: 900～1000 parts: 30～50 parts: 1000 parts.
Wherein, the using method of above-mentioned zeolite powder is: get 50～100 parts of described zeolite powders in step a and join in photosynthetic bacteria liquid, will remain zeolite powder and join in the photosynthetic bacterium concentrated solution in step b.
Wherein, in step b the water content of photosynthetic bacterium material 5.5～6%.
Wherein, in step c by following specification granulation: every solid photosynthetic bacteria particle quality is 5g, and volume is 3cm
3
Solid photosynthetic bacteria particle storage endurance in the present invention, convenient transportation.The raw material sources that the inventive method adopts are extensive, and are simple to operate, and production cost is low, do not add any chemical composition, guaranteed that the photosynthetic bacterium activity is unaffected; At the carrier of preparation process mesolite powder as the absorption photosynthetic bacterium, select simultaneously wilkinite as binding agent, because wilkinite also has adsorptivity, larger specific surface area absorption photosynthetic bacterium can be provided, make 1000 kilograms of photosynthetic bacteria liquids can correspondingly produce approximately 1000 kilograms of solid photosynthetic bacteria particles, the bacteria containing amount of the bacteria containing amount of every gram solid photosynthetic bacteria particle and every milliliter of bacterium liquid is suitable, and concentrating degree is high, has greatly improved the content of effective constituent in the solid photosynthetic bacteria particle.When in the present invention, solid photosynthetic bacteria particle uses, sedimentation is rapid, do not disperse in settling process, begin to disperse in 5 minutes after sinking to the bottom, disperse 3～5 times of enlarged areas, purifying contaminated water body rapidly, suppress other harmful algaes reach the growth of supporting bacterium (such as: blue-green algae etc.), reach and administer the effect that water pollutes.Find after testing, solid photosynthetic bacteria particle of the present invention can reduce rapidly chemical oxygen demand (COD) in Sediments (COD) and ammonia nitrogen (NH
3-N) content raises bed mud dissolved oxygen amount (DO).Preparation method of the present invention can satisfy the needs of large-scale production.Solid photosynthetic bacteria particle using method of the present invention is easy, has wide range of applications, and has wide market outlook.
Embodiment
Solid photosynthetic bacteria particle of the present invention is grouped into by the one-tenth of following weight proportioning: 1000 parts of 900～1000 parts of zeolite powders, 30～50 parts of wilkinites and photosynthetic bacteria liquids.
Preferably, above-mentioned solid photosynthetic bacteria particle is grouped into by the one-tenth of following weight proportioning: 1000 parts of 950 parts of zeolite powders, 30 parts of wilkinites and photosynthetic bacteria liquids.
Wherein, the preferred Rhodopseudomonas of above-mentioned photosynthetic bacterium (Rhodopseudomonas) photosynthetic bacterium.
Wherein, the preferred sodium bentonite of above-mentioned wilkinite.
Wherein, the concentration of above-mentioned photosynthetic bacteria liquid is 20～5,000,000,000/mL.
The preparation method of solid photosynthetic bacteria particle of the present invention comprises the steps:
A, zeolite powder is joined in photosynthetic bacteria liquid, stir, filter, the preparation water content is at 50～60% photosynthetic bacterium concentrated solution;
B, zeolite powder, wilkinite are joined in the photosynthetic bacterium concentrated solution that step a obtains, stir preparation photosynthetic bacterium material;
C, the photosynthetic bacterium material that step b is obtained carry out granulation, namely get solid photosynthetic bacteria particle.
Wherein, the weight proportion of above-mentioned zeolite powder, wilkinite, photosynthetic bacteria liquid is: 900～1000 parts: 30～50 parts: 1000 parts.
Wherein, the using method of above-mentioned zeolite powder is: get 50～100 parts of described zeolite powders in step a and join in photosynthetic bacteria liquid, will remain zeolite powder and join in the photosynthetic bacterium concentrated solution in step b.
Wherein, in step b the water content of photosynthetic bacterium material 5.5～6%.
Wherein, in step c by following specification granulation: every solid photosynthetic bacteria particle quality is 5g, and volume is 3cm
3
Photosynthetic bacterium in the present invention (Photosynthetic bacteria) is called for short PSB, it is a bacterioid the most ancient on the earth, strong adaptability, can restrain oneself the organic waste water of high density, has stronger decomposition and inversion ability, phenol, cyanogen etc. there be certain standing and capacity of decomposition, have the irreplaceable advantage of other microorganism aspect sewage disposal.In the present invention, photosynthetic bacteria liquid concentration used reaches 20～5,000,000,000/mL and gets final product, and the solid photosynthetic bacteria particle concentrating degree of preparation is high, can reach good purifying water effect.Can select in the present invention the photosynthetic bacterium of Rhodospirillaceae (Rhodospirillaceae) Rhodopseudomonas (Rhodopseudomonas).In actual production, applicable photosynthetic bacterium can be selected according to the use range of product and throughput etc. by manufacturer.
In the present invention, wilkinite is as binding agent.Wilkinite adsorbable 8～15 times to the water of own vol, volumetric expansion can reach several times to 30 times.Under many water conditions, the wilkinite crystalline structure is very fine, makes it have many good characteristics, as polymolecularity, suspension, swelling, cohesiveness, adsorptivity, cationic exchange etc.Bentonitic main component is montmorillonite.Montmorillonite is one of typical layer silicate mineral.Wilkinite not only can be used for the photosynthetic bacterium that bonds in the present invention, can also adsorb photosynthetic bacterium, the pollutent after solid photosynthetic bacteria particle is rendered to water body in all right adsorbed water body, complementary raising purifying water effect.Bentonitic interlayer cation kind determines bentonitic type: interlayer cation is Na
+The time claim sodium bentonite; Interlayer cation is Ca
2+The time claim calcium-base bentonite; Interlayer cation is H
+The time claim the hydrogen base bentonite; Interlayer cation claims organobentonite when being organic cation.Wherein, sodium bentonite physicochemical property and process technology performance are more superior, are mainly manifested in: water-intake rate and expansion multiple are large; Cation exchange capacity is high; Good dispersity in water medium, colloid index is high; Higher plasticity-and stronger cohesiveness are arranged.Therefore, better for the result of use that makes the solid photosynthetic bacteria particle for preparing, use in the present invention sodium bentonite.
The zeolite powder that the present invention uses is bought from market and is got final product.Zeolite powder has the performances such as adsorptivity, ion exchangeable, catalysis and acidproof heat-proof; be widely used in industry, agricultural, aquaculture, environmental protection industry (epi) etc.; aspect environment protection; zeolite powder is used for processing waste gas, waste water; remove or reclaim metal ion from waste water and waste liquid, remove radioactive pollutant in waste water.Therefore, zeolite powder extremely is suitable for use as the sorbent material of preparation solid photosynthetic bacteria particle.
Mesolite powder of the present invention uses in two steps, first adds a part of zeolite powder in photosynthetic bacteria liquid, allows zeolite powder fully adsorb photosynthetic bacterium, then removes part moisture in bacteria-removing liquid by filtration, obtains the photosynthetic bacterium concentrated solution; Adding residue zeolite powder and wilkinite again in the photosynthetic bacterium concentrated solution, is to be used for granulation for the photosynthetic bacterium material that obtains boning good.In actual production, can join according to the condition adjustment such as aperture of the adsorptive power of the size of selected photosynthetic bacterium, zeolite powder and filter plant the weight of the zeolite powder in photosynthetic bacteria liquid.After a part of zeolite powder is joined photosynthetic bacteria liquid, uniform stirring to make zeolite powder fully adsorb photosynthetic bacterium, then remove after filtration remaining moisture after zeolite powder absorption photosynthetic bacterium.The water content of photosynthetic bacterium material is controlled at 5.5～6%, in order to make its bonding good, the solid photosynthetic bacteria particle that obtains can not dispersed in throwing in the sinking process, can disperse rapidly after sinking under water simultaneously, can not solidify too that to cause dispersing area little, thereby reduce its utilization ratio.The standard of granulation is that every solid photosynthetic bacteria particle quality is 5g, and volume is 3cm
3, granulation can be carried out with modes such as machinery or craft, adopts mechanical system to enhance productivity.
For beneficial effect of the present invention is described, take application number as 200610018362.9, denomination of invention be " process for fixation of photosynthetic bacterium " Chinese patent application as a comparison, process for fixation according to the photosynthetic bacterium of this Patent Application Publication prepares solid photosynthetic bacteria particle, is used for making comparisons with the solid photosynthetic bacteria particle of preparation method's preparation of the present invention.
The present invention to settling time, the time opening of dispersing of the solid photosynthetic bacteria particle for preparing, disperse the concluding time, disperse area and measure.Settling time, the time opening of dispersing, disperse the concluding time all with the release time as time zero.Dispersing area compares according to specific surface area.
The present invention has also measured the detergent power of solid photosynthetic bacteria particle to Sediments.
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.
In following embodiment, photosynthetic bacterium is selected Rhodopseudomonas palustris (Rhodopseudanonas palustris), belong to Rhodospirillaceae, Rhodopseudomonas, can be used for purification of water quality, sewage disposal, feed level microbe additive etc., its bacterial concentration is 3,000,000,000/mL.Wherein, bacterium source: Methane Scientific Research Inst., Ministry of Agriculture; Bacterial strain deposit number: 00309.
Use in the following embodiments sodium bentonite, its main component is the montmorillonite of 60～88% (wt/wt), expansion capacity is 25～50ml/g, colloid index 〉=99ml/15g, the 2h water-intake rate is 250～350%, moisture≤12%, green compression strength 〉=0.23 (Mpa), inhale blue amount 〉=80mmol/g, Na
2O 〉=1.28%.
Using in the following embodiments fineness is 200 purpose zeolite powders, and its main component is the magnesium oxide of calcium oxide, 2.38% (wt/wt) of ferric oxide, 2.71% (wt/wt) of aluminium sesquioxide, 1.35% (wt/wt) of the silicon-dioxide, 13.46% (wt/wt) of 62.87% (wt/wt).
The filter membrane of 0.001～0.1 micron that uses in following embodiment is the PP hollow fiber ultrafiltration membrane.The PP hollow fiber ultrafiltration membrane is the asymmetric semipermeable membrane that utilizes macromolecular material to adopt special process to make.it is the capillary hollow shape, the tube wall micropore that gathers, the aperture of ultra-filtration membrane is greatly in 0.001～0.1 micrometer range, molecular weight cut-off is about 1000～500000 dalton, under the effect of pressure, stoste flows in film or outside film, solvent wherein or small molecules can see through film, be collected as ultrafiltrated, and (the protein of macromolecular substance wherein, enzyme classes, nucleic acid, polysaccharide etc.) and colloidal particle (latex, micropartical), bacteriums etc. are trapped within outside film, being recycled mobile stoste takes away and becomes concentrated solution, thereby realize the separation of material, concentrate and purify.
Adopt Doubleroller compaction granulator to carry out granulation in following embodiment.
The preparation of embodiment 1 solid photosynthetic bacteria particle
A, 50 kilograms of zeolite powders are added in 1000 kilograms of photosynthetic bacteria liquids, fully stir, make zeolite powder fully adsorb photosynthetic bacterium, the PP hollow fiber ultrafiltration membrane of 0.001～0.1 micron is filtered, and gets water content at 50% photosynthetic bacterium concentrated solution;
B, 850 kilograms of zeolite powders, the wilkinite of 30 kilograms are joined in the photosynthetic bacterium concentrated solution that step a obtains, stir, obtain water content at 6% photosynthetic bacterium material;
C, be 5g by every solid photosynthetic bacteria particle quality, volume is 3cm
3Specification, with Doubleroller compaction granulator, the photosynthetic bacterium material that step b obtains is carried out granulation, namely get solid photosynthetic bacteria particle.
The settling time of the solid photosynthetic bacteria particle for preparing, the time opening of dispersing, disperse the concluding time, disperse area and see Table 1.
The preparation of embodiment 2 solid photosynthetic bacteria particles
A, 50 kilograms of zeolite powders are added in 1000 kilograms of photosynthetic bacteria liquids, fully stir, make zeolite powder fully adsorb photosynthetic bacterium, the PP hollow fiber ultrafiltration membrane of 0.001～0.1 micron is filtered, and gets water content at 55% photosynthetic bacterium concentrated solution;
B, 900 kilograms of zeolite powders, the wilkinite of 30 kilograms are joined in the photosynthetic bacterium concentrated solution that step a obtains, stir, obtain water content at 5.8% photosynthetic bacterium material;
C, be 5g by every solid photosynthetic bacteria particle quality, volume is 3cm
3Specification, with Doubleroller compaction granulator, the photosynthetic bacterium material that step b obtains is carried out granulation, namely get solid photosynthetic bacteria particle.
The settling time of the solid photosynthetic bacteria particle for preparing, the time opening of dispersing, disperse the concluding time, disperse area and see Table 1.
The preparation of embodiment 3 solid photosynthetic bacteria particles
A, 50 kilograms of zeolite powders are added in 1000 kilograms of photosynthetic bacteria liquids, fully stir, make zeolite powder fully adsorb photosynthetic bacterium, the PP hollow fiber ultrafiltration membrane of 0.001～0.1 micron is filtered, and gets water content at 60% photosynthetic bacterium concentrated solution;
B, 950 kilograms of zeolite powders, the wilkinite of 50 kilograms are joined in the photosynthetic bacterium concentrated solution that step a obtains, stir, obtain water content at 5.5% photosynthetic bacterium material;
C, be 5g by every solid photosynthetic bacteria particle quality, volume is 3cm
3Specification, with Doubleroller compaction granulator, the photosynthetic bacterium material that step b obtains is carried out granulation, namely get solid photosynthetic bacteria particle.
The settling time of the solid photosynthetic bacteria particle for preparing, the time opening of dispersing, disperse the concluding time, disperse area and see Table 1.
Comparative Examples
Take application number as 200610018362.9, denomination of invention prepares solid photosynthetic bacteria particle for the disclosed method of Chinese patent application of " process for fixation of photosynthetic bacterium ":
A, the calcium hydrogen phosphate solution that is 5g/L with concentration join in photosynthetic bacteria culture solution, spend the night, and make the thalline flocculation, and siphonage sucks supernatant liquor, obtains the photosynthetic bacterium concentrated solution;
B, to get granularity be 140 purpose commodity zeolite powder 50kg, and adding viscosity is the sodium alginate 2.5kg of 800mpas, mixes thoroughly, then adds photosynthetic bacterium concentrated solution 10kg, and mixing is used the nodulizer granulation formation, and the particle after moulding is placed in the CaCl that concentration is 30g/L
2The 6h that hardens in solution takes out with tap water rinsing twice after sclerosis, namely gets solid photosynthetic bacteria particle.
The settling time of the solid photosynthetic bacteria particle for preparing, the time opening of dispersing, disperse the concluding time, disperse area and see Table 1.
The solid photosynthetic bacteria particle settling velocity for preparing in table 1 embodiment 1～3, Comparative Examples and disperse area estimation
Settling time, the time opening of dispersing in table 1, disperse the concluding time all with the release time as time zero, disperse area and compare according to specific surface area.Data presentation in table 1: the solid photosynthetic bacteria particle in Comparative Examples is because bonding dynamics is inadequate, and particle is more fluffy, just begins to disperse in the sinking process, causes thalline to run off large; Because solidified by alginate calcium, disperse area less again, the photosynthetic bacterium bond area is little.In embodiment 1～3 solid photosynthetic bacteria particle bonding good, do not disperse, can not cause thalline to run off in settling process, disperse 3～5 times of enlarged areas, can form large-area mycoderm.
The detergent power of the solid photosynthetic bacteria particle for preparing in embodiment 4 embodiment 1～3, Comparative Examples is measured
The bed mud that extracts in certain pond compares experiment, and the contamination index of bed mud is as follows: pH is 6.89, and chemical oxygen demand (COD) (COD) is 78.5mg/L, and bed mud dissolved oxygen amount (DO) is 2.95mg/L, ammonia nitrogen (NH
3-N) content is 1.13mg/L.
Experiment grouping: totally 5 groups of solid photosynthetic bacteria particle, photosynthetic bacteria liquids in solid photosynthetic bacteria particle, Comparative Examples in solid photosynthetic bacteria particle, embodiment 3 in solid photosynthetic bacteria particle, embodiment 2 in embodiment 1.Get 5 parts of this bed muds, each group uses 1 minute bed mud to compare experiment, the results are shown in Table 2.
Water-quality guideline measuring method: pH adopts pH meter (the portable PH meter of Shanghai thunder magnetic PHBJ-260) directly to measure; COD adopts potassium dichromate process to measure (with reference to GB/T 11914-1989); DO adopts portable dissolved oxygen analytic instrument (the portable dissolved oxygen meter of Shanghai thunder magnetic JPBJ-608 type) directly to measure; NH
3-N content adopts nessler reagent spectrophotometry (with reference to GB/T 7479-1987).
The detergent power of the solid photosynthetic bacteria particle for preparing in table 2 embodiment 1～3, Comparative Examples is measured
As can be seen from Table 2: after the solid photosynthetic bacteria particle of the solid photosynthetic bacteria particle of embodiment 1～3, Comparative Examples and photosynthetic bacteria liquid are processed 7 days, the chemical oxygen demand (COD) of Sediments (COD) and ammonia nitrogen (NH
3-N) content has had reduction, and dissolved oxygen amount (DO) has had raising simultaneously, illustrates Sediments has been played cleaning action.
Detergent power to each group of this experiment is analyzed, and result is as follows: after processing the 7th day, after the solid photosynthetic bacteria particle of embodiment 1 was processed, the COD of Sediments reduced by 45.98%, NH
3-N content has reduced by 41.59%, DO has raise 45.76%; After the solid photosynthetic bacteria particle of embodiment 2 was processed, the COD of Sediments had reduced by 57.45%, NH
3-N content has reduced by 61.94%, DO has raise 81.01%; After the solid photosynthetic bacteria particle of embodiment 3 was processed, the COD of Sediments had reduced by 51.33%, NH
3-N content has reduced by 51.32%, DO has raise 66.44%; After the solid photosynthetic bacteria particle of Comparative Examples was processed, the COD of Sediments had reduced by 24.59%, NH
3-N content has reduced by 31.53%, DO has raise 27.43%; After photosynthetic bacteria liquid is processed the COD of Sediments reduced by 32.73%, NH
3-N content has reduced by 31.86%, DO has raise 38.98%.Above-mentioned data show: through the detergent power of the solid photosynthetic bacteria particle of embodiment 1～3 solid photosynthetic bacteria particle and the photosynthetic bacterium apparently higher than Comparative Examples, especially best with the detergent power of the solid photosynthetic bacteria particle of embodiment 2.
Claims (7)
1. solid photosynthetic bacteria particle, it is characterized in that: the one-tenth by the following weight proportioning is grouped into: 1000 parts of 900 ~ 1000 parts of zeolite powders, 30 ~ 50 parts of wilkinites and photosynthetic bacteria liquids; Described photosynthetic bacterium is the Rhodopseudomonas photosynthetic bacterium, and the concentration of photosynthetic bacteria liquid is 20 ~ 5,000,000,000/mL.
2. solid photosynthetic bacteria particle according to claim 1, it is characterized in that: the one-tenth by the following weight proportioning is grouped into: 1000 parts of 950 parts of zeolite powders, 30 parts of wilkinites and photosynthetic bacteria liquids.
3. solid photosynthetic bacteria particle according to claim 1 and 2, it is characterized in that: described wilkinite is sodium bentonite.
4. the preparation method of solid photosynthetic bacteria particle, comprise the steps:
A, zeolite powder is joined in photosynthetic bacteria liquid, stir, filter, the preparation water content is at 50 ~ 60% photosynthetic bacterium concentrated solution; Described photosynthetic bacterium is the Rhodopseudomonas photosynthetic bacterium, and the concentration of photosynthetic bacteria liquid is 20 ~ 5,000,000,000/mL;
B, zeolite powder, wilkinite are joined in the photosynthetic bacterium concentrated solution that step a obtains, stir preparation photosynthetic bacterium material;
C, the photosynthetic bacterium material that step b is obtained carry out granulation, namely get solid photosynthetic bacteria particle;
The weight proportion of above-mentioned zeolite powder, wilkinite, photosynthetic bacteria liquid is: 900 ~ 1,000 1000 parts of Fen ︰ 30 ~ 50 Fen ︰.
5. the preparation method of solid photosynthetic bacteria particle according to claim 4, it is characterized in that: the using method of described zeolite powder is: get 50 ~ 100 parts of zeolite powders in step a and join in photosynthetic bacteria liquid, will remain zeolite powder and join in the photosynthetic bacterium concentrated solution in step b.
6. the preparation method of solid photosynthetic bacteria particle according to claim 4, it is characterized in that: in step b, the water content of photosynthetic bacterium material is 5.5 ~ 6%.
7. the preparation method of solid photosynthetic bacteria particle according to claim 4 is characterized in that: in step c by following specification granulation: every solid photosynthetic bacteria particle quality is 5g, and volume is 3cm
3
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