CN108033571A - A kind of preparation method and applications of composite nano materials - Google Patents
A kind of preparation method and applications of composite nano materials Download PDFInfo
- Publication number
- CN108033571A CN108033571A CN201711141954.4A CN201711141954A CN108033571A CN 108033571 A CN108033571 A CN 108033571A CN 201711141954 A CN201711141954 A CN 201711141954A CN 108033571 A CN108033571 A CN 108033571A
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- preparation
- composite nano
- composite
- nano materials
- nano
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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
- 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
- C02F3/341—Consortia of bacteria
-
- 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
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The invention discloses a kind of preparation method and applications of composite nano materials, by the way that the EM calcium activateds with flocculation and nano material are combined, EM calcium activated liquid is immobilized onto and removes free state heavy metal ion and the effect of soluble small molecule organically combine state heavy metal in water body by porous carrier, reaching made of composite nano materials based on the obligate sticking of physical chemistry and bioflocculation and parcel.Composite nano materials good purification prepared by the present invention, function is more, has the advantages that quickly available heavy metal passivation in water body so as to remove the toxic heavy metal ion in sewage.
Description
Technical field
The present invention relates to water-treatment technology field, and in particular to a kind of preparation method and application of composite Nano ball.
Background technology
Heavy metal pollution of water body be always be difficult to solve and endanger one of huge pollution, it is easy to trigger human diseases or
It is dead.The method of microorganism and nano material treated sewage has a extensive future, and is then with nano material immobilized microorganism
In the technical once good improvement of microorganism and nano material treated sewage, related application research has phase both at home and abroad at present
Close report.Although immobilized microorganism technique achieves certain effect in specific water body, to heavy-metal ion removal
Correlative study and patent be not much, particularly microorganism used therefor is poor there are stability, it is easily dead the shortcomings of, also have immobilization material
Material can not meet the optimum condition of microbial growth well.
The content of the invention
Goal of the invention：It is exceeded for some heavy metal ions in sewage contents, to solve problems of the prior art,
The mode that the present invention is combined using microbial fermentation technology with composite nano materials, EM calcium activated liquid is immobilized onto a diameter of
A kind of composite nano materials are obtained on the nanoporous support of 10-20mm, which can effectively remove toxic heavy metal in sewage
Ion.
Technical solution：To realize above-mentioned technical purpose, the preparation method of composite nano materials proposed by the present invention, including such as
Lower step：
(1) EM stostes, glucose, calcium carbonate and deionized water are pressed 4~6%：3~5%：3~5%：80~90%
Mass percent mixes, and moves it into fermentation flask, is put into 35~37 DEG C of constant incubators the 7-8 that ferments in confined conditions
My god, shaking speed 180-200r/min, is made EM calcium activated liquid；
(2) by nano grade iron powder, nanoscale silica flour and kaolin powder with 20-30%：25-35%：The quality hundred of 35-55%
Divide than mixing, wash with water and be placed in temperature control furnace, started to warm up from 100 DEG C, with 10~20 DEG C per minute of heating rate liter
Temperature is to 700-800 DEG C, and when keeping temperature constant state 24-36 small, cooling, obtains composite nanometre powder；
(3) composite nanometre powder that step (2) obtains is put into the EM calcium activated liquid of step (1) preparation and soaked 2-3 days,
Pelletizing after taking-up, obtaining composite Nano carrier, composite Nano carrier is being subjected to high temperature sintering, cooling is spare, then will be above-mentioned
Composite Nano carrier soaks 2~3 days in EM calcium activated liquid again, and room temperature 1~2 day is up to composite Nano material after taking-up
Material.
Preferably, in step (2), a diameter of 10-20mm of the composite Nano carrier obtained after granulation.
Preferably, the condition of high temperature sintering is to be sintered at 550-600 DEG C, when sintering time is 24-36 small
The property wherein pelletized is any one in spherical, spheroid shape, cylinder.Spherical is more preferable shape,
But other shapes can also achieve the object of the present invention.
The glucose, calcium carbonate is analyze pure, described EM stostes to like that peaceful happy environment friendly biological technology (Nanjing) has
Limit company produces, and contains the complex microorganisms such as photosynthetic bacteria, lactic acid bacteria, saccharomycete, actinomyces.
Nanometer iron powder particle diameter is between 50-55nm, and nano silica fume particle diameter is between 20-40nm, the huge ratio of nano material
Surface area and preferable biocompatibility and adsorptivity so that it can more effective more microorganisms of immobilization.Kaolin its
The caking property of carrier ball can be increased, be allowed to be not easily broken, easy to calcine shaping.
The composite nano materials obtained by above-mentioned preparation method are also within protection scope of the present invention.
Present invention further proposes application of the above-mentioned composite nano materials in heavy-metal ion removal.
Specifically, it is when for removing during heavy metal ion, the composite nano materials are straight in the ratio of 0.5-2g/L
Connect and be invested in pending polluted-water.The composite nano materials are recyclable during dystopy processing, can be reused after pickling,
Do not recycled generally during in-situ treatment.
Beneficial effect：Compared with prior art, the invention has the advantages that：
(1) composite nano materials (ball) good purification that preparation method of the present invention is prepared, can quickly improve water quality
And remove Heavy Metals in Waters ion；
(2) compound EM strains used in have very strong stability, and oxidation resistance is strong, its is multiple functional, significant effect, fit
Should be able to power it is stronger, after biological nano purifying ball enters water body, microorganism therein can adapt to external environment, and energy faster
It is enough that environment conditioning is carried out to water body；
(3), can be by the hole of nano particle honeycomb shape using composite nano materials and kaolin as the making material of carrier
Gap and huge specific surface area (750~850m2/ g) and preferable biocompatibility and sticking, reach preferably fixed micro- life
Thing forms the effect of biomembrane, can not only preferably purify water, heavy-metal ion removal, moreover it is possible to which preferably absorption fixation is micro-
Biology；And be different from other process for fixation, the present invention using 2 kinds of nano materials and kaolin as microorganism composite carrier,
Strain used is with very strong stability, and oxidation resistance is strong and can produce having for biological flocculant and causes EM floras, can be by
The hole of nano particle honeycomb shape and huge specific surface area and preferable biocompatibility and sticking, reach more preferable fixation
Microorganism forms the effect of biomembrane, and composite nano materials combine effective microbial activity calcium liquid functionally can be mutually complementary
Fill, effect more more preferable than other methods can be reached removing Heavy Metals in Waters ions.
Embodiment
Below by specific embodiment, the present invention will be described in detail.Wherein, EM stostes are (southern to like peaceful happy environment friendly biological technology
Capital) Co., Ltd's production；Nanometer iron powder, nano silica fume are purchased from Shanghai great achievement nano material Co., Ltd, kaolin be from
Longyan Gaolingtu Co., Ltd buys.
Embodiment 1
EM stostes, glucose, calcium carbonate and deionized water are pressed 4%：3%：3%：90% mass percent mixing, and
Move it into fermentation flask, be put into 35 DEG C of constant incubators and ferment in confined conditions 7 days, shaking speed 200r/min,
EM calcium activated liquid is made.Laboratory is by mass percentage by nano grade iron powder and nanoscale silica flour and kaolin powder with 25%：
30%：45% ratio mixes, and washes with water and is placed in temperature control furnace, started to warm up from 100 DEG C, with 10 DEG C per minute of heating
Speed is warming up to 750 DEG C, and when keeping temperature constant state 36 small, cooling, obtains composite nanometre powder.Above composite nanometre powder is put
Enter in EM calcium activated liquid and soak 3 days, be granulated after taking-up in pan-type pelletizer, the carrier ball of a diameter of 20mm obtained, by carrier ball
It is spare in 600 DEG C of sintering, cooling.Carrier ball is soaked 3 days in EM calcium activated liquid, room temperature is made for 2 days after taking-up
Into composite Nano ball.And configure sewage of the 10L containing heavy metal, heavy metal ions in sewage Cd2+、Cu2+、Zn2+、As3+、Pb2+,
Each heavy metal mass concentration is all 10mg/L.PH is that 8, DO contents are 2mg/L.Put into 20g composite Nanos ball, nano-carrier ball
(being soaked 3 days not in EM calcium activated liquid) and equivalent EM calcium activated liquid, water quality is monitored after 10 days, each to handle heavy metal removing rate such as
Shown in table 1：
1 difference of table adds thing counterweight metal purification Contrast on effect
Embodiment 2
EM stostes, glucose, calcium carbonate and deionized water are pressed 4%：3%：3%：90% mass percent mixing, and
Move it into fermentation flask, be put into 35 DEG C of constant incubators and ferment in confined conditions 7 days, shaking speed 180r/min,
EM calcium activated liquid is made.Laboratory is by mass percentage by nano grade iron powder and nanoscale silica flour and kaolin powder with 30%：
30%：40% ratio mixes, and washes with water and is placed in temperature control furnace, started to warm up from 100 DEG C, with 10 DEG C per minute of heating
Speed is warming up to 800 DEG C, and when keeping temperature constant state 36 small, cooling, obtains composite nanometre powder.By above composite nanometre powder
It is put into EM calcium activated liquid and soaks 3 days, is granulated after taking-up in pan-type pelletizer, the carrier ball of a diameter of 15mm is obtained, by carrier
Ball is spare in 600 DEG C of sintering, cooling.Carrier ball is soaked 3 days in EM calcium activated liquid, room temperature is made for 2 days after taking-up
Composite Nano ball is made.10L sewage is gathered in a certain sewage treatment plant forebay in Nanjing, major pollutant and quality in sewage
Concentration is respectively ammonia nitrogen 50mg/L, total nitrogen 57mg/L, and total phosphorus 24mg/L, COD 520mg/L, pH 8, DO contents are 1mg/L,
Heavy metal ion Cd2+、Cu2+、 Zn2+、As3+、Pb2+Mass concentration is respectively 5.2mg/L, 12mg/L, 24mg/L, 3.2mg/L and
53mg/L.20g composite Nanos purifying ball, bamboo charcoal ball and activated carbon ball and equivalent EM calcium activated liquid are put into respectively, are monitored after 10 days
Water quality, heavy metal removing rate are as shown in table 2：
2 difference of table adds thing and wastewater purifying efficiency is contrasted
In terms of the purified treatment effect of Tables 1 and 2, in the case of equal dosage, composite Nano ball of the invention will
Significantly better than other processing.Illustrate that the composite Nano ball has preferable removal effect to the heavy metal ion in sewage.
Above is to a kind of composite Nano ball and its system for being used to remove heavy metal ions in sewage provided by the present invention
Preparation Method is described, and combines instantiation and the effect of the product removal Heavy Metals ion of the present invention is explained
State, the explanation of above example is only intended to help to understand method and its core concept of the invention；Meanwhile for this area
Those skilled in the art, according to the thought of the present invention, in specific embodiments and applications there will be changes, this explanation
Book content should not be construed as limiting the invention.
Claims (9)
1. a kind of preparation method of composite nano materials, it is characterised in that include the following steps：
(1) EM stostes, glucose, calcium carbonate and deionized water are pressed to 4~6%: 3~5%: 3~5%: 80~90% quality
Percentage mixes, and moves it into fermentation flask, is put into 35~37 DEG C of constant incubators and ferments in confined conditions 7-8 days,
Shaking speed is 180-200r/min, and EM calcium activated liquid is made；
(2) by nano grade iron powder, nanoscale silica flour and kaolin powder with 20-30%: 25-35%: 35-55% mass percent
Mix, wash with water and be placed in temperature control furnace, started to warm up from 100 DEG C, is warming up to 10~20 DEG C per minute of heating rate
700-800 DEG C, when keeping temperature constant state 24-36 small, cooling, obtains composite nanometre powder；
(3) composite nanometre powder that step (2) obtains is put into the EM calcium activated liquid of step (1) preparation and soaked 2-3 days, taken out
Pelletizing afterwards, obtaining composite Nano carrier, composite Nano carrier is being subjected to high temperature sintering, cooling is spare, then will be above-mentioned compound
Nano-carrier soaks 2~3 days in EM calcium activated liquid again, and room temperature 1~2 day is up to composite nano materials after taking-up.
2. preparation method according to claim 1, it is characterised in that in step (2), the composite Nano obtained after granulation carries
A diameter of 10-20mm of body.
3. preparation method according to claim 1, it is characterised in that the condition of high temperature sintering is to be sintered at 550-600 DEG C,
When sintering time is 24-36 small.
4. preparation method according to claim 1, it is characterised in that the property of granulation is spherical, spheroid shape, in cylinder
Any one.
5. preparation method according to claim 1, it is characterised in that the glucose, calcium carbonate are pure to analyze, described
EM stostes to like peaceful happy environment friendly biological technology (Nanjing) Co., Ltd production.
6. preparation method according to claim 1, it is characterised in that nanometer iron powder particle diameter is between 50-55nm, nano-silicon
Powder footpath is between 20-40nm.
7. the composite nano materials obtained according to claim 1~6 any one of them preparation method.
8. application of the composite nano materials described in claim 7 in heavy-metal ion removal.
9. application according to claim 8, it is characterised in that, will be described compound when for removing during heavy metal ion
Nano material is directly invested in pending polluted-water in the ratio of 0.5-2g/L.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711141954.4A CN108033571B (en) | 2017-11-16 | 2017-11-16 | A kind of preparation method and applications of composite nano materials |
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| CN201711141954.4A CN108033571B (en) | 2017-11-16 | 2017-11-16 | A kind of preparation method and applications of composite nano materials |
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| CN108033571A true CN108033571A (en) | 2018-05-15 |
| CN108033571B CN108033571B (en) | 2019-08-02 |
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Citations (8)
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|---|---|---|---|---|
| US20050029198A1 (en) * | 2003-08-08 | 2005-02-10 | Frederick Tepper | Heavy metals absorbent and method of use |
| JP2005144304A (en) * | 2003-11-14 | 2005-06-09 | Seisui:Kk | Sludge degrading or water purifying agent, and purification method |
| CN101274174A (en) * | 2007-12-25 | 2008-10-01 | 吉林大学 | Nano granule water purifying material for removing heavy metal and preparation thereof |
| CN103316544A (en) * | 2013-07-12 | 2013-09-25 | 苏州微陶重金属过滤科技有限公司 | Wastewater treatment filtering material, and preparation method and use thereof |
| CN103755042A (en) * | 2014-02-13 | 2014-04-30 | 长江水利委员会长江科学院 | Preparation method and application of attapulgite/nano-iron composite material-microorganism coupled body |
| CN104085979A (en) * | 2014-07-01 | 2014-10-08 | 河海大学 | Nano biological filler for purifying aquaculture wastewater in biological filter tank and preparation method of nano biological filler |
| CN105254032A (en) * | 2015-11-19 | 2016-01-20 | 河海大学 | Preparation method and application of composite nano purification spheres |
| CN106732344A (en) * | 2016-12-13 | 2017-05-31 | 浙江水马环保科技有限公司 | A kind of anti-bacteria ceramic base filter core |
-
2017
- 2017-11-16 CN CN201711141954.4A patent/CN108033571B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050029198A1 (en) * | 2003-08-08 | 2005-02-10 | Frederick Tepper | Heavy metals absorbent and method of use |
| JP2005144304A (en) * | 2003-11-14 | 2005-06-09 | Seisui:Kk | Sludge degrading or water purifying agent, and purification method |
| CN101274174A (en) * | 2007-12-25 | 2008-10-01 | 吉林大学 | Nano granule water purifying material for removing heavy metal and preparation thereof |
| CN103316544A (en) * | 2013-07-12 | 2013-09-25 | 苏州微陶重金属过滤科技有限公司 | Wastewater treatment filtering material, and preparation method and use thereof |
| CN103755042A (en) * | 2014-02-13 | 2014-04-30 | 长江水利委员会长江科学院 | Preparation method and application of attapulgite/nano-iron composite material-microorganism coupled body |
| CN104085979A (en) * | 2014-07-01 | 2014-10-08 | 河海大学 | Nano biological filler for purifying aquaculture wastewater in biological filter tank and preparation method of nano biological filler |
| CN105254032A (en) * | 2015-11-19 | 2016-01-20 | 河海大学 | Preparation method and application of composite nano purification spheres |
| CN106732344A (en) * | 2016-12-13 | 2017-05-31 | 浙江水马环保科技有限公司 | A kind of anti-bacteria ceramic base filter core |
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