CN105668773A - Preparation technology of suspended filler for rapid microbial biofilm formation - Google Patents
Preparation technology of suspended filler for rapid microbial biofilm formation Download PDFInfo
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- CN105668773A CN105668773A CN201610051077.0A CN201610051077A CN105668773A CN 105668773 A CN105668773 A CN 105668773A CN 201610051077 A CN201610051077 A CN 201610051077A CN 105668773 A CN105668773 A CN 105668773A
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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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/101—Arranged-type packing, e.g. stacks, arrays
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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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
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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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/106—Carbonaceous materials
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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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/107—Inorganic materials, e.g. sand, silicates
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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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/108—Immobilising gels, polymers or the like
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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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/109—Characterized by the shape
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a preparation technology of suspended filler for rapid microbial biofilm formation. The preparation technology comprises the following steps; an acetone solution is prepared from 3-5 parts of maleic anhydride and 0.2-0.6 parts of dicumyl peroxide through dissolution with 2.5 kg of acetone and placed in a mixer; 65-75 parts of high-density polyethylene, 5-15 parts of slaked lime, 5-20 parts of DOW powdered activated carbon, 6-10 parts of light calcium carbonate, 1.5-3 parts of gelatin, 1-2 parts of chitin, 0.8-2 parts of Fe3O4 magnetic powder and 0.1-0.3 parts of manganese-zinc ferrite are added to the mixer and uniformly mixed, acetone volatilizes naturally after a mixture is taken out and placed in an open container, and the mixer becomes a solid; the solid material is fed into a twin-screw extruder and subjected to melt-extrusion and granulation; granulated granules are fed into a type 45 single-screw extruder and is subjected to extruding molding through an extrusion mold. The biofilm formation speed is high, a biofilm is not prone to falling, the treating efficiency is high, and the preparation technology is suitable for treating low-concentration organic matters and ammonia nitrogen in sewage.
Description
Technical field
The present invention relates to the preparation technology of a kind of suspended biological filler, belong to the sewage disposal in environmental project subject
Technical field.
Background technology
Along with the development in city, continuing to bring out of emerging industry, accelerate the deterioration of environmental pollution. Particularly country strengthens industrial pollution management, improves sewage drainage standard, and existing treatment technology is difficult to meet the requirement of new standard. Therefore the water treatment field of China is also in the development need according to overall situation, accelerates the R and D of new technique, to adapt to increasingly serious environmental requirement. In recent years, sewage disposal is used technology of biological membrane solve sewage upgrading requirement up to standard, to alleviate Water treatment pressure power and the sewage pollution to people's living environment of enterprise. In biomembrance process, filler is that microorganism is rely the place perched, and its performance directly affects treatment effect and investment. At present, domestic conventional filler is the fixed pattern fillers such as honeycomb filler, soft-filler, semi soft packing and compounded mix, but these fillers are frequently encountered by blocking, conglomeration in using, the problem such as harden, and have impact on biological treatment effect. And above-mentioned filler is both needed to be arranged on auxiliary stand, cause the inconveniences such as filler installation, replacing.
The filler product of prior art also exists certain problem in actual applications, and owing to specific surface area is little, hydrophilicity and bioaffinity are poor, causes Shortcomings in the compactness of biofilm speed, biofilm amount and film and filler; Secondly as pollutional load is relatively low, growth of microorganism is restricted, and the speed of growth is slow, also leads to be not easy to bio-film colonization.
Summary of the invention
It is an object of the present invention to provide the preparation technology of a kind of microorganism rapid biofilm floating stuffing, it is fast that this preparation technology obtains floating stuffing biofilm speed, difficult drop-off, treatment effeciency is high, the process of low-concentration organic and ammonia nitrogen suitable in sewage, low-concentration organic waste water, the biologic packing material of the present invention has extremely strong hydrophilic and bioaffinity, and biomembrane is had very strong adsorption strength by filler itself, be conducive to retaining and accumulation of Biomass on filling carrier, therefore can well adapt to the wastewater treatment under low consistency conditions.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of microorganism rapid biofilm floating stuffing preparation technology, comprise the following steps:
Step one, take maleic anhydride 3 ~ 5 parts, cumyl peroxide 0.2 ~ 0.6 part, with 2.5 kilograms of acetone they are dissolved and make acetone soln, be placed in mixer;
Step 2, again addition high density polyethylene (HDPE) 65 ~ 75 parts, Calx 5 ~ 15 parts, Tao Shi Powdered Activated Carbon 5 ~ 20 parts, precipitated calcium carbonate 6 ~ 10 parts, 1.5 ~ 3 parts of gelatin, chitin 1 ~ 2 part, ferroferric oxide magnetic powder 0.8 ~ 2 part and 0.1 ~ 0.3 part of Homogeneous phase mixing of manganese-zinc ferrite in mixer, taking-up is placed in unlimited container and allows acetone naturally volatilize, make solid;
Step 3, above-mentioned solid material is put in double screw extruder, melt extrude pelletize;
Step 4, the granule produced above is put in 45 type single screw extrusion machines, extruded by extrusion die, the filler obtained, this filler includes hollow short pipe, is concentrically disposed with the first concentric ring outside hollow short pipe, the second concentric ring successively, connected by even muscle between described hollow short pipe, the first concentric ring and the second concentric ring, be positioned at the outermost second concentric loop surface indentation.
The technical scheme improved further in technique scheme is as follows:
As preferably, described magnetic powder is at least one in ferroso-ferric oxide magnetic, manganese-zinc ferrite and nickel-zinc ferrite.
As preferably, described Calx mixes according to 1:1.2:0.9 weight portion with Tao Shi Powdered Activated Carbon and precipitated calcium carbonate.
As preferably, described magnetic powder, Tao Shi Powdered Activated Carbon, Calx all being pulverized, after pulverizing, order number is more than 200 orders.
Owing to technique scheme is used, the present invention compared with prior art has following advantages and effect:
1, the preparation technology of microorganism rapid biofilm floating stuffing of the present invention, its biofilm speed is fast, difficult drop-off, treatment effeciency is high, the process of low-concentration organic and ammonia nitrogen suitable in sewage, low-concentration organic waste water, the biologic packing material of the present invention has extremely strong hydrophilic and bioaffinity, and biomembrane is had very strong adsorption strength by filler itself, be conducive to retaining and accumulation of Biomass on filling carrier, its ammonia nitrogen removal frank is more than 92%, and COD clearance, more than 78%, therefore can well adapt to the wastewater treatment under low consistency conditions.
2, the preparation technology of microorganism rapid biofilm floating stuffing of the present invention, it adds cumyl peroxide 0.2 ~ 0.6 part, 1.5 ~ 3 parts of gelatin, ferroferric oxide magnetic powder 0.8 ~ 2 part and manganese-zinc ferrite 0.1 ~ 0.3 part further in high density polyethylene (HDPE) 65 ~ 75 parts, precipitated calcium carbonate 6 ~ 10 parts, maleic anhydride 3 ~ 5 parts, not only improve filler and form magnetization effect with relatively ferromagnetism, improve Pollutants in Wastewater conversion rate and efficiency, produce absorption affinity, increase the adsorbance of filling surface, shorten the biofilm cycle, and strengthen biomembrane adsorption strength; Simultaneously, cumyl peroxide 0.2 ~ 0.6 part, 1.5 ~ 3 parts of gelatin can improve the activity of microorganism, in water, microorganism is after magnetization, the microorganism adapting to survive has bigger propagation and metabolic capacity, make organic pollution under the effect of low-intensity magnetic field, gather through magnetic by effects such as magnetic force key, magnetic force, Lorentz force and mangneto cavity effects, adsorb, be enriched to magnetic biological filling material surface; Oxygen is paramagnet, can be adsorbed near biologic packing material under the action of a magnetic field during aeration, increases the oxygen concentration of filling surface, promotes the breeding of aerobe, and additionally low-intensity magnetic field also has the activity of inducing microbial and the effect of enzymatic activity; Again, it adopts 1.5 ~ 3 parts of gelatin and chitin 1 ~ 2 part collocation to use so that bio-carrier, shortens the biofilm cycle, and strengthens biomembrane adsorption strength, difficult drop-off.
3, the preparation technology of microorganism rapid biofilm floating stuffing of the present invention, filler component adds Tao Shi Powdered Activated Carbon 5 ~ 20 parts further, filler is made to have excellent absorbability, biological cell and the Adsorption of Organic surface of solids can be made, cause the high oxidization rate of local space, break through the boundary of original concentration balance, extend microorganism and organic time of contact, make Organic substance by rapid, thoroughly degrade, biological oxidation makes again activated carbon surface absorbability be restored.
4, the preparation technology of microorganism rapid biofilm floating stuffing of the present invention, in filler component, further Calx, improves the proportion of filler, allows floating filler proportion close to the proportion of water, is substantially reduced power stirring energy consumption, improves effect of filler.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1 ~ 4: the preparation technology of a kind of microorganism rapid biofilm floating stuffing, described floating stuffing is made up of the component of following weight portion, as shown in table 1:
Table 1
The density of the above-mentioned floating stuffing for microorganism rapid biofilm is 0.96～0.98g/cm3。
Above-mentioned Calx mixes according to 1:1.2:0.9 weight portion with Tao Shi Powdered Activated Carbon and precipitated calcium carbonate.
A kind of preparation technology for the above-mentioned floating stuffing for microorganism rapid biofilm, comprises the following steps:
Step one, take maleic anhydride 3 ~ 5 parts, cumyl peroxide 0.2 ~ 0.6 part, with 2.5 kilograms of acetone they are dissolved and make acetone soln, be placed in mixer;
Step 2, again addition high density polyethylene (HDPE) 65 ~ 75 parts, Calx 5 ~ 15 parts, Tao Shi Powdered Activated Carbon 5 ~ 20 parts, precipitated calcium carbonate 6 ~ 10 parts, 1.5 ~ 3 parts of gelatin, chitin 1 ~ 2 part, ferroferric oxide magnetic powder 0.8 ~ 2 part and 0.1 ~ 0.3 part of Homogeneous phase mixing of manganese-zinc ferrite in mixer, taking-up is placed in unlimited container and allows acetone naturally volatilize, make solid;
Step 3, above-mentioned solid material is put in double screw extruder, melt extrude pelletize;
Step 4, the granule produced above is put in 45 type single screw extrusion machines, extruded by extrusion die, the filler obtained, this filler includes hollow short pipe, is concentrically disposed with the first concentric ring outside hollow short pipe, the second concentric ring successively, connected by even muscle between described hollow short pipe, the first concentric ring and the second concentric ring, be positioned at the outermost second concentric loop surface indentation.
Comparative example 1
Adopt the preparation technology identical with embodiment 1, be different in that: product composition is added without Calx. Obtaining floating stuffing product E, density is 0.92kg/L.
Comparative example 2
Adopt the preparation technology identical with embodiment 1, be different in that: product composition is added without magnetic powder. Obtaining floating stuffing product F, density is 0.958kg/L.
Comparative example 3
Adopt the preparation technology identical with embodiment 1, be different in that: product composition is added without Tao Shi activated carbon. Obtaining floating stuffing product G, density is 0.98kg/L.
Taking the product that same amount of embodiment 1 ~ 4 and comparative example 1 ~ 3 obtain to be followed successively by A, B, C, D, E, F, G and put in water and soak, the time is 5 hours, then takes out standing 30min, measures moisture content. Product A, B, C, D, E, F, G moisture content respectively 17.5,17.8,17.6,17.8,11.8,12.5,13.2. With contact angle instrument measurement calculate, product A, B, C, D, E, F, G contact angle respectively 62 °, 61 °, 63 °, 62 °, 73 °, 75 °, 82 °. Result shows that the hydrophilicity of suspended biological filler prepared by the present invention is greatly improved.
Take same amount of embodiment and the product A of comparative example acquisition, B, C, D, E, F, G, be placed in 5 parallel bioreactors and test. Mud and waste water process device bio-chemical effluent for certain chemical engineering sewage, wherein test and carry out in MBBR, floating stuffing filling rate is 40%, and pH is 6.3 ~ 7.6, and temperature is 20 ~ 30 DEG C, C/N/P=100:5:1, when DO=1.5 ~ 3mg/L, COD is 200mg/L, and ammonia nitrogen is 50mg/L, hydraulic detention time 5h, result is as shown in table 2.
The result of the test of table 2 filler A ~ G
| Filling kind | Biofilm time (d) | Water outlet COD(mg/L) | Water outlet ammonia nitrogen (mg/L) | COD clearance (%) | Ammonia nitrogen removal frank (%) |
| A | 12 | 41 | 3 | 79.5 | 94 |
| B | 13 | 38 | 2 | 81 | 96 |
| C | 13 | 40 | 3 | 80 | 94 |
| D | 11 | 39 | 2 | 82 | 95 |
| E | 16 | 68 | 15 | 66 | 70 |
| F | 19 | 86 | 19 | 57 | 62 |
| G | 20 | 78 | 16 | 61 | 68 |
From table 2, the biologic packing material biofilm time prepared by the inventive method substantially shortens, and the clearance of COD and ammonia nitrogen significantly improves.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this. All equivalences made according to spirit of the invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1. the preparation technology of a microorganism rapid biofilm floating stuffing, it is characterised in that: comprise the following steps:
Step one, take maleic anhydride 3 ~ 5 parts, cumyl peroxide 0.2 ~ 0.6 part, with 2.5 kilograms of acetone they are dissolved and make acetone soln, be placed in mixer;
Step 2, again addition high density polyethylene (HDPE) 65 ~ 75 parts, Calx 5 ~ 15 parts, Tao Shi Powdered Activated Carbon 5 ~ 20 parts, precipitated calcium carbonate 6 ~ 10 parts, 1.5 ~ 3 parts of gelatin, chitin 1 ~ 2 part, ferroferric oxide magnetic powder 0.8 ~ 2 part and 0.1 ~ 0.3 part of Homogeneous phase mixing of manganese-zinc ferrite in mixer, taking-up is placed in unlimited container and allows acetone naturally volatilize, make solid;
Step 3, above-mentioned solid material is put in double screw extruder, melt extrude pelletize;
Step 4, the granule produced above is put in 45 type single screw extrusion machines, extruded by extrusion die, the filler obtained, this filler includes hollow short pipe, is concentrically disposed with the first concentric ring outside hollow short pipe, the second concentric ring successively, connected by even muscle between described hollow short pipe, the first concentric ring and the second concentric ring, be positioned at the outermost second concentric loop surface indentation.
2. the preparation technology of microorganism rapid biofilm floating stuffing according to claim 1, it is characterised in that: described ferroferric oxide magnetic powder and manganese-zinc ferrite, Tao Shi Powdered Activated Carbon, Calx all being pulverized, after pulverizing, order number is more than 200 orders.
3. the preparation technology of microorganism rapid biofilm floating stuffing according to claim 1, it is characterised in that: described magnetic powder is at least one in ferroso-ferric oxide magnetic, manganese-zinc ferrite and nickel-zinc ferrite.
4. the preparation technology of microorganism rapid biofilm floating stuffing according to claim 1, it is characterised in that: described Calx mixes according to 1:1.2:0.9 weight portion with Tao Shi Powdered Activated Carbon and precipitated calcium carbonate.
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| CN201610051077.0A CN105668773A (en) | 2016-01-27 | 2016-01-27 | Preparation technology of suspended filler for rapid microbial biofilm formation |
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| CN201610051077.0A CN105668773A (en) | 2016-01-27 | 2016-01-27 | Preparation technology of suspended filler for rapid microbial biofilm formation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336004A (en) * | 2016-11-09 | 2017-01-18 | 南京大学 | Device and method for rapidly matching wastewater and packing for biofilm formation |
| CN107139497A (en) * | 2017-06-01 | 2017-09-08 | 环能科技股份有限公司 | A kind of preparation method of magnetic water treatment filler |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762851A (en) * | 2005-08-29 | 2006-04-26 | 江志伟 | Modified microbe stuffing and its preparation method |
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2016
- 2016-01-27 CN CN201610051077.0A patent/CN105668773A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762851A (en) * | 2005-08-29 | 2006-04-26 | 江志伟 | Modified microbe stuffing and its preparation method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336004A (en) * | 2016-11-09 | 2017-01-18 | 南京大学 | Device and method for rapidly matching wastewater and packing for biofilm formation |
| CN106336004B (en) * | 2016-11-09 | 2019-08-09 | 南京大学 | A kind of device and method of Rapid matching waste water and biofilm |
| CN107139497A (en) * | 2017-06-01 | 2017-09-08 | 环能科技股份有限公司 | A kind of preparation method of magnetic water treatment filler |
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Application publication date: 20160615 |