CN1314600C - Modified microbe stuffing and its preparation method - Google Patents
Modified microbe stuffing and its preparation method Download PDFInfo
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- CN1314600C CN1314600C CNB2005100471227A CN200510047122A CN1314600C CN 1314600 C CN1314600 C CN 1314600C CN B2005100471227 A CNB2005100471227 A CN B2005100471227A CN 200510047122 A CN200510047122 A CN 200510047122A CN 1314600 C CN1314600 C CN 1314600C
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- stuffing
- acetone
- density polyethylene
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- maleic anhydride
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The present invention relates to modified microbial stuffing, which is composed of the following raw materials by weight percentage: 66.2 to 91.7 % of high-density polyethylene, 5 to 15 % of regenerated rubber powder, 2 to 10 % of light calcium carbonate, 1 to 6 % of maleic anhydride, 0.1 to 0.8 % of dicumyl peroxide, 0.2 to 2 % of chitin and 0 to 0.2 % of carbon black. A preparation method of the microbial stuffing comprises the following steps: the maleic anhydride and the dicumyl peroxide are dissolved by acetone; the acetone solution is homogeneously mixed with other materials, and afterwards, the acetone is naturally volatilized; the solid mixture is put into a screw extruder to be molten, and granulating is extruded; particles made in the last step are put into the screw extruder to be extruded and formed. The stuffing of the present invention has high hydrophily, the microbial activity is raised by enzymatic accelerators, and the roughness and the specific surface area of the stuffing are great. The reaction efficiency of the stuffing of the present invention is 2 to 4 times higher than the reaction energy of common modified plastic stuffing.
Description
Technical field the present invention relates to a kind of material, handles the filler of waste water especially for the moving-bed biofilm method.
Background technology just has the people that MBBR is used for municipal sewage treatment as far back as earlier 1990s.Filler at that time (or carrier) smooth surface, specific surface area are little, hydrophobic, so microbial film is difficult for adhering to.So people have done research work in large quantities to filler, more successful is Korea S Pohang University, its＜it is the microbial fixed carrier manufacture method that sewage/wastewater is handled with the easy fired clay (open on October 5th, 1999 day of publication number 10-1999-0073118) patent to the effect that: at least a clay mineral substance accounts for 60～90 weight ratios, the organic or inorganic tackiness agent accounts for 10～40 weight ratios, gross weight with above-mentioned clay mineral substance and organic or inorganic tackiness agent is a benchmark, the pore conditioning agent that mixes below 10% is made slurry, the slurry of making is made particle or hollow tube form, formed body is being burnt till below 500 ℃.Though it is smooth that above-mentioned patent has solved filling surface, specific surface area is little, and also there is certain weak point in hydrophobic problem.At first be that raw material is the clay mineral substance, there is certain limitation in its source; Be to add to need sintering man-hour again, though temperature be not very high below 500 ℃, it is still cumbersome to operate; Above-mentioned in addition patent lays particular emphasis on to be made many minute apertures with carrier and is beneficial to microorganic adhesion, in fact many minute apertures more help carrying out ion-exchange, and the bacterium on the biofilm carrier can be progressively attached to filling surface, therefore many minute apertures only can be played a role at initial operating stage, when reactor normally moved, ion exchange was then blocked.There is material itself to promote the material of microorganism active nowhere again, microorganism is being worked with lower activity.
Summary of the invention the object of the present invention is to provide a kind of not only surface irregularity, specific surface area big, but also can adhere to high quantity, high-activity microorganism, and raw material sources are extensive, the simple modified microbe stuffing of preparation technology and preparation method thereof.
One, raw material
Raw material of the present invention mainly includes: high density polyethylene(HDPE), ground rubber, light calcium carbonate, maleic anhydride, dicumyl peroxide and chitin.Main raw material of the present invention is a high density polyethylene(HDPE), and it can all adopt high density polyethylene(HDPE), and consumption is 66.2～91.7 weight parts.But in order to reduce the cost of filler, can partly adopt recycled High Density Polyethylene, this moment, the consumption of high density polyethylene(HDPE) was 50～70 weight parts, and the consumption of recycled High Density Polyethylene is 20～40 weight parts.Increase the filling surface roughness in the raw material in addition, increase the ground rubber of specific surface area, its consumption is 5～15 weight parts.Because the density of high density polyethylene(HDPE) is generally at 0.92～0.96 gram per centimeter
3, approaching for the density and the water that make filler, then need add light calcium carbonate and adjust density, the consumption of this light calcium carbonate is 2～10 weight parts.Increase filler viscosity in the raw material in addition, improve its hydrophilic maleic anhydride, its consumption is 1～6 weight part.But maleic anhydride can not be brought into play above-mentioned effect separately, must just can work with the derivative that the high-density polyethylene alkene reaction generates high density polyethylene(HDPE), and both reactions need initiator, i.e. and dicumyl peroxide, its consumption is 0.1～0.8 weight part.Improve bioactive enzyme promotor chitin in the raw material in addition, its consumption is 0.2～2 weight part.Improve the appearance luster of product if desired, can include carbon black 0～0.2 weight part in the raw material.
Two, preparation method
1. granulation
(1) with maleic anhydride, dicumyl peroxide acetone solution, makes acetone soln.
(2) with above-mentioned acetone soln and other raw material uniform mixing, allow acetone volatilize naturally afterwards, material becomes solid.
(3) above-mentioned solid materials is dropped in the screw extrusion press, melt extrude granulation.
2. extrusion molding
The particle of producing is above dropped in the screw extrusion press, extrusion molding, and adopt vacuum mold, and vacuum tightness is 30000～40000Pa, and the filler of extruding adopts water-cooled shaping, and its temperature of cooling water is 20～30 ℃.
During use filler is thrown to MBBR, the ratio of filling changes along with the difference of water quality.Reactor bottom is provided with microporous aeration device, and under the promotion of aeration bubble and current, filler overturns in water, fully contacts with oxygen with waste water attached to the microbial film on the carrier, the organism in quick absorption and the degradation water, thus make waste water obtain deep purifying.
The present invention has following advantage compared to existing technology:
1. the wetting ability of filler makes microorganic adhesion strong, and the minimizing that comes off has reduced the generation of excess sludge; Make filling surface form hydration shell, improved the mass transfer ability; Increase microbial numbers, improved reaction efficiency.
2. enzyme promotor has been improved microbic activity, and reaction efficiency is improved.
3. subparticle has increased the roughness and the specific surface area of filler, has improved the adhesive ability of microorganism.
4. the density of filler has guaranteed that it can be promoted by aeration, waterpower, and it is mobile to roll.
5. raw material sources are extensive, and preparation technology is simple.
6. filler of the present invention has improved 2～4 times, BOD than general modified plastics filler reaction efficiency
5Volumetric loading can reach 5-10kg/ (m
3D).
Embodiment
Example 1
Get 1 kilogram of maleic anhydride, 0.1 kg peroxygen diisopropylbenzene(DIPB), with 2.5 kilograms of acetone acetone soln is made in their dissolvings, place mixing machine, in mixing machine, add 91.7 kilograms of high density polyethylene(HDPE)s, 5 kilograms of ground rubbers, 2 kilograms of light calcium carbonates and 0.2 kilogram of chitin uniform mixing again.Taking-up is placed on and allows acetone volatilize naturally in the unlimited container, makes it to become solid.Above-mentioned solid materials is dropped in the twin screw extruder, melt extrude granulation.Each section of forcing machine temperature is: 160～170 ℃ in a district, 180～190 ℃ in two districts, 200～220 ℃ in three districts, 220～240 ℃ in four districts, 220～240 ℃ in five districts, 220～240 ℃ in six districts, 190～200 ℃ of heads.The particle of producing is above dropped in the 45 type single screw extrusion machines extrusion molding.The supply gas pressure of extrusion die is less than 10000Pa.Each section temperature is: head 170-180 ℃, 175～185 ℃ in two districts, 160～170 ℃ in three districts, 145～155 ℃ in four districts.The vacuum tightness 40kPa of vacuum mold, 6 meters/minute of extruded velocities, the filler of extruding adopt water-cooled qualitative, temperature of cooling water is 20-30 ℃, the filler that obtains is a cylinder, establish in it and establish axial radial fin on axial intersection stiffening web, the cylinder outer wall, and the diameter of cylinder with highly equate.
Example 2
Get 6 kilograms of maleic anhydrides, 0.8 kg peroxygen diisopropylbenzene(DIPB), with 12 kilograms of acetone acetone soln is made in their dissolvings, place mixing machine, in mixing machine, add 66.2 kilograms of high density polyethylene(HDPE)s, 15 kilograms of ground rubbers, 10 kilograms of light calcium carbonates and 2 kilograms of chitin uniform mixing again.Taking-up is placed on and allows acetone volatilize naturally in the unlimited container, makes it to become solid.Above-mentioned solid materials is dropped in the twin screw extruder, melt extrude granulation.Each section of forcing machine temperature is: 160～170 ℃ in a district, 180～190 ℃ in two districts, 200～220 ℃ in three districts, 220～240 ℃ in four districts, 220～240 ℃ in five districts, 220～240 ℃ in six districts, 190～200 ℃ of heads.The particle of producing is above dropped in the 45 type single screw extrusion machines extrusion molding.The supply gas pressure of extrusion die is less than 10000Pa.Each section temperature is: head 170-180 ℃, and 175～185 ℃ in two districts, 160～170 ℃ in three districts, 145～155 ℃ in four districts.The vacuum tightness 40kPa of vacuum mold, 6 meters/minute of extruded velocities, the filler of extruding adopt water-cooled qualitative, temperature of cooling water is 20-30 ℃, the filler that obtains is a cylinder, establish in it and establish axial radial fin on axial intersection stiffening web, the cylinder outer wall, and the diameter of cylinder with highly equate.
Example 3
Get 1 kilogram of maleic anhydride, 0.1 kg peroxygen diisopropylbenzene(DIPB), with 2 kilograms of acetone acetone soln is made in their dissolvings, place mixing machine, in mixing machine, add 50 kilograms of high density polyethylene(HDPE)s, 40 kilograms of recycled High Density Polyethylenes, 15 kilograms of ground rubbers, 2 kilograms of light calcium carbonates, 0.2 kilogram of chitin and 0.05 kilogram of uniform mixing of carbon black again.Operation is identical with example 1 below.
Example 4
Get 6 kilograms of maleic anhydrides, 0.8 kg peroxygen diisopropylbenzene(DIPB), with 12 kilograms of acetone acetone soln is made in their dissolvings, place mixing machine, in mixing machine, add 70 kilograms of high density polyethylene(HDPE)s, 20 kilograms of recycled High Density Polyethylenes, 5 kilograms of ground rubbers, 10 kilograms of light calcium carbonates, 2 kilograms of chitins and 0.2 kilogram of uniform mixing of carbon black again.Operation is identical with example 1 below.
Claims (4)
1. modified microbe stuffing, it is characterized in that: it is made up of the raw material of following parts by weight:
High density polyethylene(HDPE) 66.2～91.7
Ground rubber 5～15
Light calcium carbonate 2～10
Maleic anhydride 1～6
Dicumyl peroxide 0.1～0.8
Chitin 0.2～2
Carbon black 0～0.2.
2. modified microbe stuffing, it is characterized in that: it is made up of the raw material of following parts by weight:
High density polyethylene(HDPE) 50～70
Recycled High Density Polyethylene 20～40
Ground rubber 5～15
Light calcium carbonate 2～10
Maleic anhydride 1～6
Dicumyl peroxide 0.1～0.8
Chitin 0.2～2
Carbon black 0～0.2.
3. the preparation method of modified microbe stuffing as claimed in claim 1 is characterized in that:
(1) with maleic anhydride, dicumyl peroxide acetone solution, make acetone soln,
(2) add high density polyethylene(HDPE), ground rubber, light calcium carbonate, chitin, carbon black, uniform mixing to above-mentioned acetone soln, allow acetone volatilize naturally afterwards and make it to become solid materials,
(3) above-mentioned solid materials is dropped in the screw extrusion press, melt extrude granulation
(4) particle that will produce above drops in the screw extrusion press, extrusion molding.
4. the preparation method of modified microbe stuffing as claimed in claim 2 is characterized in that:
(1) with maleic anhydride, dicumyl peroxide acetone solution, make acetone soln,
(2) add high density polyethylene(HDPE), recycled High Density Polyethylene, ground rubber, light calcium carbonate, chitin, carbon black, uniform mixing to above-mentioned acetone soln, allow acetone volatilize naturally afterwards and make it to become solid materials,
(3) above-mentioned solid materials is dropped in the screw extrusion press, melt extrude granulation
(4) particle that will produce above drops in the screw extrusion press, extrusion molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100471227A CN1314600C (en) | 2005-08-29 | 2005-08-29 | Modified microbe stuffing and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100471227A CN1314600C (en) | 2005-08-29 | 2005-08-29 | Modified microbe stuffing and its preparation method |
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| CN1762851A CN1762851A (en) | 2006-04-26 |
| CN1314600C true CN1314600C (en) | 2007-05-09 |
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| CNB2005100471227A Expired - Fee Related CN1314600C (en) | 2005-08-29 | 2005-08-29 | Modified microbe stuffing and its preparation method |
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| CN100537450C (en) * | 2006-07-03 | 2009-09-09 | 浙江工业大学 | Bio-affinity water treatment filling |
| CN100455524C (en) * | 2006-07-20 | 2009-01-28 | 大连宇都环境工程技术有限公司 | Modified microbial membrane carrier |
| CN101439905B (en) * | 2008-12-18 | 2011-05-11 | 蔡庆 | Foaming extrusion molding thermoplastic composite material stuffing for biological treatment of waste water |
| CN102491504A (en) * | 2011-12-06 | 2012-06-13 | 浙江双益环保科技发展有限公司 | Polyethylene biological filing material and composite fluidized bed bioreactor |
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| CN103253770A (en) * | 2013-06-08 | 2013-08-21 | 大连生源水处理设备发展有限公司 | Integrated biological reactor for treatment of industrial wastewater and domestic sewage |
| CN104609567B (en) * | 2013-11-05 | 2017-01-18 | 中国石油化工股份有限公司 | Preparation method of suspended packing bioreactor and application thereof |
| CN104910481A (en) * | 2015-05-15 | 2015-09-16 | 大连宇都环境技术材料有限公司 | Modified biocarrier used in waste water processing anaerobic tank |
| CN105481083A (en) * | 2016-01-27 | 2016-04-13 | 苏州科环环保科技有限公司 | Suspended microbial packing for wastewater treatment and preparation method thereof |
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| CN105621594A (en) * | 2016-01-27 | 2016-06-01 | 苏州科环环保科技有限公司 | Modified MBBR (moving bed biofilm reactor) suspended biological filler and preparation method thereof |
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| CN105621595A (en) * | 2016-01-27 | 2016-06-01 | 苏州科环环保科技有限公司 | Hydrophilic carrier for microbial biofilm formation |
| CN106854014B (en) * | 2016-12-29 | 2020-10-13 | 浦华控股有限公司 | Biological carrier for anaerobic anoxic section of sewage treatment and preparation method and application thereof |
| CN106830298B (en) * | 2017-04-17 | 2020-06-05 | 江志伟 | Modified suspended biological elastic filler for treating industrial wastewater and domestic sewage and preparation method thereof |
| CN109019833A (en) * | 2018-10-18 | 2018-12-18 | 王德喜 | A kind of biologic packing material, the preparation method of biologic packing material, sewage disposal system |
| CN109928437A (en) * | 2019-03-12 | 2019-06-25 | 烟台大成塑业有限公司 | Treatment tank filler is without glue packaging technology |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01258796A (en) * | 1988-04-06 | 1989-10-16 | Sumitomo Bakelite Co Ltd | Production of packing material |
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| CN1762851A (en) | 2006-04-26 |
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