CN103708625A - Lightweight filler for floating biological filtration - Google Patents
Lightweight filler for floating biological filtration Download PDFInfo
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- CN103708625A CN103708625A CN201210369601.0A CN201210369601A CN103708625A CN 103708625 A CN103708625 A CN 103708625A CN 201210369601 A CN201210369601 A CN 201210369601A CN 103708625 A CN103708625 A CN 103708625A
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- China
- Prior art keywords
- filler
- biofiltration
- light filling
- particle
- lightweight filler
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- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a lightweight filler for floating biological filtration, and belongs to the technical field of sewage treatment. The sewage treatment lightweight filler for floating biological filtration is a granulous organic filler with a specific gravity of 0.005-0.1, a particle size of 2-10 mm and a specific surface area of 600-1,200 m<2>/m<3>. Compared with conventional fillers such as ceramsite, quartz sand and carbon coke, the lightweight filler provided by the invention has the advantages of large porosity, large specific surface area, good bio-film forming property and strong sewage interception capacity, can be back-washed easily, and is low in energy consumption, small in resistance, good in mass transfer effect and high in treatment efficiency.
Description
Technical field
The invention belongs to technical field of sewage, relate to a kind of floating biofiltration light filling.
Background technology
Floating biological filter is a kind of novel sewage disposal technology, with traditional sewage treatment process comparison, and the plurality of advantages such as it is few that it has initial cost, and working cost is low, and floor space is little, convenient management.It is the sewage disposal device that integrates biological degradation, solid-liquid separation.Sewage enters bottom, filter tank, and after processing, water flows out from top.In filter tank, form three layers, supreme the being followed successively by end of from: settlement of sewage layer, filtering separation layer, processing water accumulation layer, filling filtrate in filtering separation layer, the filter material surface microbial film of growing, the inner aeration in filter tank, effluent stream through time, utilize the strong oxidative degradation ability of high-concentration biological film on filler to carry out fast purification to sewage.
Most crucial in biofiltration is filler, according to it, adopts the difference in source, can be divided into mineral filler, organic polymer filler and complex carrier three major types type; Different according to density, can be divided into floating type filler and sinking filler.Mineral filler is generally sinking filler, and organic polymer filler is generally floating type filler.Desirable floating biological filter generally should possess compared with good physical behavior such as bigger serface, coarse surface, suitable density, and bioaffinity and stronger stability.
Summary of the invention
The object of this invention is to provide a kind of floating biofiltration light filling, the wide accommodation of this filler BOD volumetric loading, is suitable for advanced treatment of wastewater and secondary treatment.
The technical solution used in the present invention is: a kind of floating biofiltration light filling, and proportion is 0.005～0.1, and particle diameter is 2～10mm, and specific surface area is 600～1200 m
2/ m
3granular organic filler.
Described biofiltration is preferably 0.03～0.1 with light filling proportion, and particle diameter is preferably 3～7mm, and surface-area is 800～1000 m preferably
2/ m
3.
Described filler is organic materials expanded particle, optimization polyurethane expanded particle, polyethylene foam particle, EPS expanded particle or one or more mixing of EPP polypropylene expanded particle.
Described filler is shaped as circle, ellipse or irregular shape.
Described filler adopts conventional foaming technique to make, and preferred microporous foaming technique is made, and frothing percentage is 5～60%, and cell density is 10
12～10
15individual/m
3, porosity is greater than 95%.
The present invention also provides a kind of biofiltration of floating application in sewage disposal with filler, at the granular organic light filling of biofiltration device filling, forms filtering separation layer.Waste water is during by above-mentioned filtering separation layer, filler has been held back the suspended substance in waste water, colloid and dissolved matter in waste water is adsorbed on filling surface simultaneously, microorganism breeds very soon, at filling surface, form microbial film, after microbial film maturation, perch organic pollutant in the microorganism panning sewage on microbial film as nutrition, organism in waste water is produced to adsorption and oxidation effect, thereby waste water energy is purified.
Beneficial effect: such as haydite, quartz sand, coke etc. is compared with conventional filler, porosity of the present invention is large, and specific surface area is large, and carrier surface forming biofilm property is good, and retaining power is strong, and easily and can consume energy and lack, resistance is little in back flushing, and mass transfer effect is good, and processing efficiency is high.
Embodiment
Embodiment 1
Adopt foaming technique, in suspension polystyrene resin, add oil liquefied gas and the granular EPS expanded particle that foams and make, frothing percentage is 55%, and cell density is 10
13～10
15individual/m
3, porosity is 96%.The proportion of EPS expanded particle is 0.04～0.1, and particle diameter is 3～7mm, and surface-area is 840～900m
2/ m
3.In the granular EPS expanded particle of biofiltration device filling to packed height, be 1/4th of pond body, form filtering separation layer.Trade effluent after second-stage treatment, by above-mentioned filtering separation layer, filler has been held back the suspended substance in waste water, colloid and dissolved matter in waste water is adsorbed on filling surface simultaneously, and microorganism breeds very soon, at filling surface, forms microbial film, after microbial film maturation, perch organic pollutant in the microorganism panning sewage on microbial film as nutrition, the organism in waste water is produced to adsorption and oxidation effect, thereby waste water energy is purified.BOD volumetric loading is 1.5～2.5kgBOD
5/ (m3.d), processing efficiency: BOD clearance is 90%.
Embodiment 2
Adopt microporous foam technology to make EPP polypropylene expanded particle, frothing percentage is 57%, and cell density is 10
13～10
15individual/m
3, porosity is 97%.The proportion of EPP polypropylene expanded particle is 0.03～0.08, and particle diameter is 3～7mm, and surface-area is 950～1000m
2/ m
3.In biofiltration device filling EPP polypropylene expanded particle to packed height, be 1/4th of pond body, form filtering separation layer.By sanitary wastewater by above-mentioned filtering separation layer, filler has been held back the suspended substance in waste water, colloid and dissolved matter in waste water is adsorbed on filling surface simultaneously, microorganism breeds very soon, at filling surface, form microbial film, after microbial film maturation, perch organic pollutant in the microorganism panning sewage on microbial film as nutrition, organism in waste water is produced to adsorption and oxidation effect, thereby waste water energy is purified.BOD volumetric loading is 1.8～2.5kgBOD
5/ (m3.d), processing efficiency: BOD clearance is 95%.
Claims (6)
1. a floating biofiltration light filling, is characterized in that proportion is 0.005～0.1, and particle diameter is 2～10mm, and specific surface area is 600～1200 m
2/ m
3granular organic filler.
2. biofiltration light filling according to claim 1, is characterized in that described proportion is 0.03～0.1, and particle diameter is 3～7mm, surface-area 800～1000 m
2/ m
3.
3. biofiltration light filling according to claim 1, is characterized in that described filler is organic materials expanded particle.
4. biofiltration light filling according to claim 1, is characterized in that described filler is polyurethane foam particle, polyethylene foam particle, EPS expanded particle or one or more mixing of EPP polypropylene expanded particle.
5. biofiltration light filling according to claim 1, is characterized in that described filler is shaped as circle, ellipse or irregular shape.
6. biofiltration light filling according to claim 1, is characterized in that described filler adopts conventional foaming technique to make, and frothing percentage is 5～60%, and cell density is 10
12～10
15individual/m
3, porosity is greater than 95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369601.0A CN103708625A (en) | 2012-09-28 | 2012-09-28 | Lightweight filler for floating biological filtration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369601.0A CN103708625A (en) | 2012-09-28 | 2012-09-28 | Lightweight filler for floating biological filtration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103708625A true CN103708625A (en) | 2014-04-09 |
Family
ID=50402027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210369601.0A Pending CN103708625A (en) | 2012-09-28 | 2012-09-28 | Lightweight filler for floating biological filtration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103708625A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649493A (en) * | 2017-10-31 | 2018-02-02 | 上海恒晔生物科技有限公司 | A kind of preparation method and waste disposal method of the bio-matrix for loading strain |
| CN109292965A (en) * | 2018-11-12 | 2019-02-01 | 中信环境技术（天津）有限公司 | A kind of new bio filter membrane and its application in filter plant |
| CN114604961A (en) * | 2021-03-24 | 2022-06-10 | 景赫新材料科技(浙江)有限公司 | Biological filler for sewage treatment contact oxidation process |
Citations (6)
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|---|---|---|---|---|
| JPH06501882A (en) * | 1991-08-28 | 1994-03-03 | デュボー，ジャン | Method for filtration of liquids containing suspended particles and apparatus for carrying out this method |
| US5314621A (en) * | 1991-03-15 | 1994-05-24 | Otv (Omnium De Traitements Et De Valorisation) | Method for the biological purification of wastewater |
| JP2004290773A (en) * | 2003-03-26 | 2004-10-21 | Ngk Insulators Ltd | Filtration apparatus |
| CN101735475A (en) * | 2009-12-10 | 2010-06-16 | 清华大学 | Preparation method of hydrophilic polyurethane porous support |
| CN201737772U (en) * | 2010-06-03 | 2011-02-09 | 北京城市排水集团有限责任公司 | Suspension polyurethane foam sponge filler for water treatment |
| KR20120014967A (en) * | 2010-08-11 | 2012-02-21 | 주식회사 지승개발 | A upward flow type biological filtering appratus using expanded poly ethylene and the method using the same |
-
2012
- 2012-09-28 CN CN201210369601.0A patent/CN103708625A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5314621A (en) * | 1991-03-15 | 1994-05-24 | Otv (Omnium De Traitements Et De Valorisation) | Method for the biological purification of wastewater |
| JPH06501882A (en) * | 1991-08-28 | 1994-03-03 | デュボー，ジャン | Method for filtration of liquids containing suspended particles and apparatus for carrying out this method |
| JP2004290773A (en) * | 2003-03-26 | 2004-10-21 | Ngk Insulators Ltd | Filtration apparatus |
| CN101735475A (en) * | 2009-12-10 | 2010-06-16 | 清华大学 | Preparation method of hydrophilic polyurethane porous support |
| CN201737772U (en) * | 2010-06-03 | 2011-02-09 | 北京城市排水集团有限责任公司 | Suspension polyurethane foam sponge filler for water treatment |
| KR20120014967A (en) * | 2010-08-11 | 2012-02-21 | 주식회사 지승개발 | A upward flow type biological filtering appratus using expanded poly ethylene and the method using the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649493A (en) * | 2017-10-31 | 2018-02-02 | 上海恒晔生物科技有限公司 | A kind of preparation method and waste disposal method of the bio-matrix for loading strain |
| CN109292965A (en) * | 2018-11-12 | 2019-02-01 | 中信环境技术（天津）有限公司 | A kind of new bio filter membrane and its application in filter plant |
| CN114604961A (en) * | 2021-03-24 | 2022-06-10 | 景赫新材料科技(浙江)有限公司 | Biological filler for sewage treatment contact oxidation process |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |