JPH01130789A - Anaerobic micrororganism-immobilized filter medium for water treatment - Google Patents
Anaerobic micrororganism-immobilized filter medium for water treatmentInfo
- Publication number
- JPH01130789A JPH01130789A JP29006387A JP29006387A JPH01130789A JP H01130789 A JPH01130789 A JP H01130789A JP 29006387 A JP29006387 A JP 29006387A JP 29006387 A JP29006387 A JP 29006387A JP H01130789 A JPH01130789 A JP H01130789A
- Authority
- JP
- Japan
- Prior art keywords
- filter medium
- anaerobic
- sewage
- immobilized
- water treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 14
- 244000005700 microbiome Species 0.000 claims abstract description 21
- 239000004698 Polyethylene Substances 0.000 claims abstract description 12
- -1 polyethylene Polymers 0.000 claims abstract description 12
- 229920000573 polyethylene Polymers 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 239000002351 wastewater Substances 0.000 claims description 6
- 230000003100 immobilizing effect Effects 0.000 claims description 5
- 239000010865 sewage Substances 0.000 abstract description 15
- 229920006254 polymer film Polymers 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000001888 Peptone Substances 0.000 description 1
- 108010080698 Peptones Proteins 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 235000019319 peptone Nutrition 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/30—Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/30—Details relating to random packing elements
- B01J2219/302—Basic shape of the elements
- B01J2219/30276—Sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/30—Details relating to random packing elements
- B01J2219/302—Basic shape of the elements
- B01J2219/30296—Other shapes
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【発明の詳細な説明】
Ａ、産業上の利用分野
本発明は、下水等の汚水の嫌気性処理を行う嫌気性微生
物を固定化するための濾材に関するものである。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a filter medium for immobilizing anaerobic microorganisms for anaerobic treatment of wastewater such as sewage.
Ｂ１発明の概要
本発明は、有機性の汚水を嫌気性処理するための嫌気性
微生物を固定化する濾材において、濾材の担体を多孔性
のポリエチレンとアモルファスシリカよりなる膜状多孔
質体により作ることによって、嫌気性微生物の捕捉能力
を高めることにより、
嫌気性の水処理効率を向上させようとするものである。B1 Summary of the Invention The present invention provides a filter medium for immobilizing anaerobic microorganisms for anaerobic treatment of organic wastewater, in which the carrier of the filter medium is made of a membrane-like porous material made of porous polyethylene and amorphous silica. The aim is to improve the efficiency of anaerobic water treatment by increasing the ability to capture anaerobic microorganisms.
Ｃ１従来の技術
下水のような比較的有機物濃度が低い排水の処理には、
一般的に活性汚泥による好気性処理が行われている。こ
の方法は、好気性微生物である活性汚泥による有機物分
解であるため多量の空気供給を必要とし、その電力消費
は多大である。また、活性汚泥の増殖分である余剰汚泥
が多く発生し、汚泥処理に要するコストも高い。C1 Conventional technology To treat wastewater such as sewage that has a relatively low concentration of organic matter,
Generally, aerobic treatment using activated sludge is performed. Since this method decomposes organic matter using activated sludge, which is aerobic microorganisms, it requires a large amount of air supply and consumes a large amount of electricity. Further, a large amount of surplus sludge, which is the multiplication of activated sludge, is generated, and the cost required for sludge treatment is high.
そこで、最近では電力消費と汚泥発生が少なく、メタン
ガスが有価物として回収できる嫌気性処理が見直されて
きている。この方法は、下水汚泥やふん尿などの有機物
濃度が高い排水の処理に供されており、長い滞留時間を
かけて有機物を分解するものである。Therefore, anaerobic treatment, which consumes less electricity, generates less sludge, and can recover methane gas as a valuable product, has recently been reconsidered. This method is used to treat wastewater with a high concentration of organic matter, such as sewage sludge and manure, and decomposes the organic matter over a long residence time.
Ｄ０発明が解決しようとする問題点
しかしながら、上記従来の技術における嫌気性処理で（
木、短時間での処理が要求される下水処理に嫌気性処理
を応用した場合、増殖速度の極めて遅い嫌気性微生物は
、反応槽から流失してしまうことが問題点となっていた
。この問題点を解決する方法として、嫌気性処理を行う
反応槽に濾材を充填し、この濾材に嫌気性微生物を高濃
度に固定する方法か考えられているが、効率的な濾材の
開発においては、現在模索の状態である。Problems to be solved by the D0 invention However, in the anaerobic treatment in the above conventional technology (
When anaerobic treatment is applied to sewage treatment, which requires rapid treatment, a problem has been that anaerobic microorganisms, which have extremely slow growth rates, are washed away from the reaction tank. One possible solution to this problem is to fill the reaction tank for anaerobic treatment with a filter medium and fix anaerobic microorganisms in this filter medium at a high concentration.However, in the development of an efficient filter medium, , is currently in the state of exploration.
本発明は、上記問題点を解決するために創案されたもの
で、嫌気性微生物の捕捉能力が高く、これにより嫌気性
処理による水処理の効率を向上することのできる水処理
用微生物固定化濾材を提供することを目的とする。The present invention was created to solve the above problems, and is a microorganism-immobilized filter material for water treatment that has a high ability to capture anaerobic microorganisms, thereby improving the efficiency of water treatment by anaerobic treatment. The purpose is to provide
Ｅ１問題点を解決するための手段
上記の目的を達成するための本発明の水処理用嫌気性微
生物固定化濾材は、
有機性の汚水を嫌気処理するための嫌気性微生物を固定
化する濾材において、
ポリエチレンとアモルファスシリカよりなる膜状多孔質
体により構成したことを特徴とする。Means for Solving Problem E1 To achieve the above object, the anaerobic microorganism-immobilized filter medium for water treatment of the present invention is a filter medium for immobilizing anaerobic microorganisms for anaerobic treatment of organic wastewater. , It is characterized by being constructed from a membrane-like porous material made of polyethylene and amorphous silica.
Ｆ９作用
嫌気性微生物の濾材への固定では、濾材表層の細孔に微
生物が捕捉されるものである。そのためｐ材としては捕
捉空間の広い多孔性に優れた材料が育利となる。When immobilizing F9 acting anaerobic microorganisms onto a filter medium, the microorganisms are captured in the pores of the surface layer of the filter medium. Therefore, it is best to use a material with excellent porosity and a wide trapping space as the p-material.
本発明は、多孔性に優れたポリエチレンとアモルファス
シリカを主成分とする高分子膜を、濾材の担体として用
いることにより、濾材の嫌気性微生物の捕捉能力を高め
る。The present invention improves the ability of the filter medium to capture anaerobic microorganisms by using a polymer membrane mainly composed of polyethylene and amorphous silica, which have excellent porosity, as a carrier for the filter medium.
Ｇ、実施例 以下、本発明を実施例に基づいて詳細に説明する。G. Example Hereinafter, the present invention will be explained in detail based on examples.
第１図は本発明の一実施例を示す嫌気性微生物固定化濾
材の構成図である。本実施例は、ポリエチレン７０ボリ
ユーム％とアモルファスシリカ３０ボリユーム％を主成
分とする高分子膜（旭化成株式会社製）より成る厚さ１
ｍｍ、縦横２０Ｘ２０ＩＩ１ｍの２枚の膜状多孔質体（
以下膜状ポリエチレンと記す）１，２を、互いに縦方向
に溝を切り欠いて嵌合させ、濾材として形成したもので
ある。上記膜状ポリエチレン１．２は、孔径が０．０１
〜１μｍで、気孔率５０％と多孔性に優れている。FIG. 1 is a block diagram of an anaerobic microorganism-immobilized filter medium showing one embodiment of the present invention. This example is made of a polymer film (manufactured by Asahi Kasei Corporation) whose main components are 70 vol% polyethylene and 30 vol% amorphous silica.
mm, two membrane-like porous bodies measuring 20 x 20 II 1 m in length and width (
1 and 2 (hereinafter referred to as membrane-like polyethylene) were fitted together with grooves cut out in the vertical direction to form a filter medium. The membrane polyethylene 1.2 has a pore diameter of 0.01
~1 μm, and has excellent porosity with a porosity of 50%.
以下、上記嫌気性微生物固定化Ｆ材を使用した場合の水
処理効率を、それを使用しない場合と比較する。Below, the water treatment efficiency when using the above-mentioned anaerobic microorganism immobilized material F will be compared with when it is not used.
非多孔性の高分子材料である円筒状ポリ塩化ビニル（厚
さｌ＋ｎｍ、内径１８φｊｌｊｌ、高さ２０■）を充填
した反応容器（以下反応容器Ａとする）と、膜状ポリエ
チレン濾材を充填した反応容器（以下反応容器Ｂとする
）のそれぞれに、消化汚泥と肉エキス、ペプトンを主成
分とする合成下水Ｉ（ＢＯＤ（水質）； １０００ｍｇ
／１２ ）とをＩ：ｌの割合で混合した液を種汚泥液と
して加えた。その後各反応容器Ａ、Ｂを３５°Ｃの恒温
度水槽中で２０日間静置して微生物を馴養した。A reaction vessel (hereinafter referred to as reaction vessel A) filled with cylindrical polyvinyl chloride (thickness l+nm, inner diameter 18φjljl, height 20cm), which is a non-porous polymeric material, and a reaction vessel filled with a membrane-shaped polyethylene filter medium. In each of the containers (hereinafter referred to as reaction containers B), synthetic sewage I (BOD (water quality); 1000 mg containing digested sludge, meat extract, and peptone as the main components) was added.
/12) in a ratio of I:l was added as a seed sludge liquid. Thereafter, each of the reaction vessels A and B was left standing in a constant temperature water bath at 35°C for 20 days to acclimatize the microorganisms.
次に、この汚泥液を各反応容器Ａ、Ｂより引き抜き、合
成下水Ｉで反応容器Ａ、Ｂ内を洗浄後、合成下水Ｉを各
反応容器Ａ、Ｂに満たし、ＩＯ日間培養を行った。続い
て同様にして、合成下水、Ｉを水で希釈し５た合成下水
ＩＩ （ＢＯＤ：５００ｍｇ／Ｉ ）で１０日間培養し
、さらに同様にして、合成下水■を水で希釈した合成下
水１ｆｆ（ＢＯＤ勺２００ｍｇ／ρ）により順次にＩＯ
日間培養を行った。Next, this sludge liquid was drawn out from each reaction vessel A, B, and after washing the inside of reaction vessels A, B with synthetic sewage I, each reaction vessel A, B was filled with synthetic sewage I, and cultured for 10 days. Subsequently, in the same manner, synthetic sewage I was diluted with water and cultured for 10 days in synthetic sewage II (BOD: 500 mg/I). Sequential IO with BOD (200mg/ρ)
Culture was performed for 1 day.
こうした培養を行った後、合成下水■を用いて上向流式
により１．ＦＭ！／日の流量で連続培養を行った。各反
応容！Ａ、Ｂについて合成下水■による連続培養の経過
期間かＩＯ週間になった時に発生ガスの量と組成及び反
応容器Ａ、Ｈの処理水質を調べた。結果は表１のとおり
である。ただし表１中のガス量はｌＯ週目までの累積量
である。After culturing in this manner, 1. FM! Continuous culture was performed at a flow rate of /day. Each reaction capacity! For A and B, the amount and composition of gas generated and the quality of treated water in reaction vessels A and H were investigated after the elapsed period of continuous culture using synthetic sewage ■ or 10 weeks had passed. The results are shown in Table 1. However, the gas amount in Table 1 is the cumulative amount up to the 10th week.
また、表１中ＣＯＤ（Ｍｎ）とはＮ／４０ＫＭｎＯ＋に
よる化学的酸素要求量で蘂り、ＴＯＣとは全有機炭素量
である。Further, in Table 1, COD (Mn) refers to the chemical oxygen demand amount by N/40KMnO+, and TOC refers to the total organic carbon amount.
表１ １０週間連続培養後の発生ガス量１組成及び処理
水質以上の結果に基づいて反応容器ＡとＢにおける合成
下水の嫌気処理の効率を比較すると、発生ガス量は反応
容器Ｂの方が反応容器Ａよりはるかに多く、約５倍はど
にもなった。発生ガス中のメタンガス濃度においても反
応容器Ｂの方が反応容器Ａの約１８倍と極めて高濃度に
なった。処理水においてもＣＯＤＭｎ、 ＴＯＣとも反
応容器Ｂの方が反応容器Ａよりもかなり低い値を示し、
反応容器Ｂの方が反応容器Ａより高い処理効率を有して
いると言える。このことは合成下水を基準とした嫌気性
処理に関与する微生物については、反応容器Ｂの方が反
応容器Ａよりも多いことを示しており、その要因として
は、膜状ポリエチレン濾材の細孔中にポリ塩化ビニルの
濾材より多くの微生物を捕捉していると考えられる。Table 1 Amount of gas generated after 10 weeks of continuous culture 1 Comparing the efficiency of anaerobic treatment of synthetic sewage in reaction vessels A and B based on the results of the composition and quality of treated water, the amount of gas generated was higher in reaction vessel B. Much more than in container A, about 5 times as much. The concentration of methane gas in the generated gas was also extremely high in reaction vessel B, approximately 18 times that in reaction vessel A. In the treated water, both CODMn and TOC in reaction vessel B showed significantly lower values than in reaction vessel A.
It can be said that reaction vessel B has higher processing efficiency than reaction vessel A. This shows that there are more microorganisms involved in the anaerobic treatment of synthetic sewage in reaction vessel B than in reaction vessel A, and the reason for this is that microorganisms involved in anaerobic treatment of synthetic sewage are more abundant in the pores of the membrane-like polyethylene filter medium. It is thought that more microorganisms are captured than polyvinyl chloride filter media.
なお、ポリエチレンとアモルファスシリカの混合率は実
施例に限定するものでなく、適宜に変えたものでも良い
ことはもちろんである。また濾材の形状も反応槽に則し
て構成されるものである。It should be noted that the mixing ratio of polyethylene and amorphous silica is not limited to that in the examples, and it goes without saying that it may be changed as appropriate. Furthermore, the shape of the filter medium is configured to match the reaction tank.
このように、本発明はその主旨に沿って種々に応用され
、種々の実施態様を取り得るものである。As described above, the present invention can be applied in various ways and can take various embodiments in accordance with its gist.
Ｈ，発明の効果
以上の説明で明らかなように、本発明の水処理用嫌気性
微生物固定化濾材によれば、ポリエチレンとアモルファ
スシリカよりなる膜状多孔質体を使用しているため、実
施例からもわかるように、微生物を高濃度に捕捉するこ
とができ、処理効率の向上を図ることができるとともに
メタンガスの回収が促進される。H. Effects of the Invention As is clear from the above explanation, the anaerobic microorganism-immobilized filter medium for water treatment of the present invention uses a membranous porous body made of polyethylene and amorphous silica. As can be seen, microorganisms can be captured at a high concentration, treatment efficiency can be improved, and methane gas recovery can be promoted.
第１図は本発明の一実施例を示す微生物固定化濾材の構
成図である。
１．２・・・膜状多孔質膜。FIG. 1 is a block diagram of a microorganism-immobilized filter medium showing one embodiment of the present invention. 1.2... Membrane-like porous membrane.
Claims (1)
化する濾材において、 ポリエチレンとアモルファスシリカよりなる膜状多孔質
体により構成したことを特徴とする水処理用嫌気性微生
物固定化濾材。[Scope of Claims] A filter medium for immobilizing anaerobic microorganisms for anaerobic treatment of organic wastewater, characterized in that it is made of a membrane-like porous material made of polyethylene and amorphous silica. Microorganism immobilized filter media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29006387A JPH01130789A (en) | 1987-11-17 | 1987-11-17 | Anaerobic micrororganism-immobilized filter medium for water treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29006387A JPH01130789A (en) | 1987-11-17 | 1987-11-17 | Anaerobic micrororganism-immobilized filter medium for water treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01130789A true JPH01130789A (en) | 1989-05-23 |
Family
ID=17751308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29006387A Pending JPH01130789A (en) | 1987-11-17 | 1987-11-17 | Anaerobic micrororganism-immobilized filter medium for water treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01130789A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2747052A1 (en) * | 1996-04-03 | 1997-10-10 | Norton Chem Process Prod | Deformation resistant Lessing ring for mass- or heat transfer applications |
| KR20190027637A (en) * | 2017-09-07 | 2019-03-15 | 해동에이앤씨 유한회사 | Water treatment filter using UHMW PE material applied to AOS separator |
-
1987
- 1987-11-17 JP JP29006387A patent/JPH01130789A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2747052A1 (en) * | 1996-04-03 | 1997-10-10 | Norton Chem Process Prod | Deformation resistant Lessing ring for mass- or heat transfer applications |
| KR20190027637A (en) * | 2017-09-07 | 2019-03-15 | 해동에이앤씨 유한회사 | Water treatment filter using UHMW PE material applied to AOS separator |
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