CN105621595A - Hydrophilic carrier for microbial biofilm formation - Google Patents
Hydrophilic carrier for microbial biofilm formation Download PDFInfo
- Publication number
- CN105621595A CN105621595A CN201610051096.3A CN201610051096A CN105621595A CN 105621595 A CN105621595 A CN 105621595A CN 201610051096 A CN201610051096 A CN 201610051096A CN 105621595 A CN105621595 A CN 105621595A
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- parts
- concentric ring
- hydrophilic support
- activated carbon
- zinc ferrite
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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
-
- 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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
Abstract
The invention discloses a hydrophilic carrier for microbial biofilm formation. The hydrophilic carrier comprises a hollow short tube, and a first concentric ring and a second concentric ring which are sequentially concentrically arranged outside the hollow short tube, wherein the surface of the outermost second concentric ring is toothed; and the microbial filler is composed of the following components in parts by weight: high-density polyethylene, low-density polyethylene, white lime, Dow powder activated carbon, light calcium carbonate, maleic anhydride, dicumyl peroxide, gelatin, chitin, ferroferric oxide magnetic powder and manganese-zinc ferrite. The density of the microbial filler is 0.96-0.98 g/cm<3>. The hydrophilic carrier for microbial biofilm formation prolongs the contact time between microbes and organic matters, so that the organic matters are degraded quickly and thoroughly; and the biological oxidation can restore the surface adsorption capacity of the activated carbon.
Description
Technical field
The present invention relates to a kind of microbe stuffing, 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 a kind of microorganism colonization hydrophilic support, this microorganism colonization hydrophilic support 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, 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 colonization hydrophilic support, described microbe stuffing 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;
Described microbe stuffing is made up of the component of following weight portion:
High density polyethylene (HDPE) 55 ~ 65 parts,
Low Density Polyethylene 8 ~ 12 parts,
Calx 5 ~ 15 parts,
Tao Shi Powdered Activated Carbon 5 ~ 20 parts,
Precipitated calcium carbonate 6 ~ 10 parts,
Maleic anhydride 3 ~ 5 parts,
Cumyl peroxide 0.2 ~ 0.6 part,
1.5 ~ 3 parts of gelatin,
Chitin 1 ~ 2 part,
Ferroferric oxide magnetic powder 0.8 ~ 2 part,
Manganese-zinc ferrite 0.1 ~ 0.3 part;
The density of described microbe stuffing is 0.96��0.98g/cm3��
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 ferroferric oxide magnetic powder and manganese-zinc ferrite, Tao Shi Powdered Activated Carbon, Calx are all pulverized, and 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, microorganism colonization hydrophilic support 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; Secondly, adopt resin material based on high density polyethylene (HDPE) 55 ~ 65 parts collocation Low Density Polyethylene 8 ~ 12 parts, add maleic anhydride 3 ~ 5 parts, cumyl peroxide 0.2 ~ 0.6 part, 1.5 ~ 3 parts of gelatin, reduce the contact angle of sewage and carrier, improve the hydrophilic of carrier, microorganism is made to be easier to be attached on carrier, hydrophilic bio-carrier specific surface area is big, adsorptivity is extremely strong, water can prevent the microbial film that carrier outer surface adheres to from coming off because rubbing between carrier, biofilm required time is short, improves waste water treatment efficiency.
2, microorganism colonization hydrophilic support 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; 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 use to make bio-carrier, shortens the biofilm cycle, and strengthens biomembrane adsorption strength, difficult drop-off.
3, microorganism colonization hydrophilic support 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, microorganism colonization hydrophilic support 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: a kind of microorganism colonization hydrophilic support, described hydrophilic support 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;
Described hydrophilic support 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.
Above-mentioned ferroferric oxide magnetic powder and manganese-zinc ferrite, Tao Shi Powdered Activated Carbon, Calx are all pulverized, and after pulverizing, order number is more than 200 orders.
A kind of preparation technology for above-mentioned hydrophilic support, 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) 55 ~ 65 parts, Low Density Polyethylene 8 ~ 12 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, being put into by the granule produced above in 45 type single screw extrusion machines, extruded by extrusion die, the filler obtained is cylinder, sets and set axial radial fin on axial cross reinforcing rib, cylinder outer wall in it.
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 18.9,18.8,18.8,18.7,11.8,12.5,13.2. With contact angle instrument measurement calculate, product A, B, C, D, E, F, G contact angle respectively 57 ��, 58 ��, 58 ��, 56 ��, 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 | 10 | 40 | 3 | 83 | 96 |
| B | 11 | 39 | 2 | 85 | 95 |
| C | 10 | 41 | 3 | 84 | 94 |
| D | 11 | 42 | 2 | 84 | 95 |
| E | 16 | 68 | 15 | 66 | 70 |
| F | 19 | 86 | 19 | 57 | 62 |
| G | 20 | 78 | 16 | 61 | 68 |
From table 2, the hydrophilic support 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. a microorganism colonization hydrophilic support, it is characterized in that: described hydrophilic support 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;
Described microbe stuffing is made up of the component of following weight portion:
High density polyethylene (HDPE) 55 ~ 65 parts,
Low Density Polyethylene 8 ~ 12 parts,
Calx 5 ~ 15 parts,
Tao Shi Powdered Activated Carbon 5 ~ 20 parts,
Precipitated calcium carbonate 6 ~ 10 parts,
Maleic anhydride 3 ~ 5 parts,
Cumyl peroxide 0.2 ~ 0.6 part,
1.5 ~ 3 parts of gelatin,
Chitin 1 ~ 2 part,
Ferroferric oxide magnetic powder 0.8 ~ 2 part,
Manganese-zinc ferrite 0.1 ~ 0.3 part;
The density of described hydrophilic support is 0.96��0.98g/cm3��
2. microorganism colonization hydrophilic support 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.
3. microorganism colonization hydrophilic support 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.
4. microorganism colonization hydrophilic support according to claim 1, it is characterised in that: described ferroferric oxide magnetic powder and manganese-zinc ferrite, Tao Shi Powdered Activated Carbon, Calx are all pulverized, and after pulverizing, order number is more than 200 orders.
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| CN107758998A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Chemical engineering sewage zero discharge treatment device |
| CN107758996A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | High-salt wastewater discharge treating system |
| CN107758995A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | High nitrogen high concentrated organic wastewater cleaning system |
| CN107758994A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Advanced treatment process for gas station phenol water |
| CN107758837A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Save biochemical denitrification dephosphorization processing unit |
| CN107758993A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Chemical engineering sewage Integral purifier |
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| CN107758998A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Chemical engineering sewage zero discharge treatment device |
| CN107758996A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | High-salt wastewater discharge treating system |
| CN107758995A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | High nitrogen high concentrated organic wastewater cleaning system |
| CN107758994A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Advanced treatment process for gas station phenol water |
| CN107758837A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Save biochemical denitrification dephosphorization processing unit |
| CN107758993A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Chemical engineering sewage Integral purifier |
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| CN107758986A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | Ammonia nitrogen waste water processing system |
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Application publication date: 20160601 |