JPS62269797A - Contact filter medium for anaerobic treatment of sewage and its production - Google Patents
Contact filter medium for anaerobic treatment of sewage and its productionInfo
- Publication number
- JPS62269797A JPS62269797A JP61112472A JP11247286A JPS62269797A JP S62269797 A JPS62269797 A JP S62269797A JP 61112472 A JP61112472 A JP 61112472A JP 11247286 A JP11247286 A JP 11247286A JP S62269797 A JPS62269797 A JP S62269797A
- Authority
- JP
- Japan
- Prior art keywords
- inorg
- filter medium
- added
- powder
- pulverized
- 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.)
- Granted
Links
- 239000010865 sewage Substances 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000002245 particle Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 18
- 239000008187 granular material Substances 0.000 claims description 14
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims 1
- 239000011148 porous material Substances 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000151 deposition Methods 0.000 abstract 4
- 230000008021 deposition Effects 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000008188 pellet Substances 0.000 abstract 1
- 238000005453 pelletization Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000001580 bacterial effect Effects 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000011218 seed culture Methods 0.000 description 1
Classifications
-
- 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
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
この発明は汚水の嫌気的生物処理に用いる接触炉材及び
その製造法に関する。Detailed Description of the Invention 3. Detailed Description of the Invention The present invention relates to a contact furnace material used for anaerobic biological treatment of wastewater and a method for manufacturing the same.
従来、汚水の嫌気的生物処理は１回分式消化槽を用い、
汚水も嫌気雰囲気下で、無加温又は加−して（３０〜３
５℃）、嫌気性消化汚泥を種入れして、機械的又はガス
脱離液等の循環によって攪拌することが行われていた。Conventionally, anaerobic biological treatment of wastewater uses a single-batch digester.
Sewage is also treated in an anaerobic atmosphere without heating or with heating (30 to 3
5°C), anaerobic digestion sludge was seeded and stirred mechanically or by circulating gas desorbed liquid.
この方法では処理に前動な菌体量が少く、又菌体と汚水
の汚濁成分との接触が不十分で、８０％ガス化に要する
消化日数が無加温の場合８０日、加温した場合は２８日
といったように長い期間を要した。In this method, the amount of bacteria ready for treatment is small, and the contact between the bacteria and the pollutant components of the sewage is insufficient, and the number of days required for digestion to reach 80% gasification is 80 days without heating. In some cases, it took a long time, such as 28 days.
接触炉材に菌体を担持する方法には架橋法、包括法又は
吸着法があり、汚水の嫌気的生物処理に於いては包括法
と吸着法が多く行なわれている。There are crosslinking methods, entrapment methods, and adsorption methods for supporting bacterial cells on contact furnace materials, and entrapment methods and adsorption methods are often used in anaerobic biological treatment of wastewater.
これらのうち、吸着法は、粗表面プラスチックス成型品
、多孔性セラミックス成型品又は無機物質粉末（貝殻粉
、フライアッシュ等）を表面に接着したプラスチック成
型品に嫌気性菌体を吸着棲息させるもので、包括法に比
較して、汚水の汚濁成分と菌体との接触性、発生ガスの
離脱性等に優れているが、接触枦材表面に対する菌体量
の行右密度を高くしてガス発生量を多くすることが必要
になる。Among these, the adsorption method is a method in which anaerobic bacteria are adsorbed and inhabited on a rough-surfaced plastic molded product, a porous ceramic molded product, or a plastic molded product with inorganic powder (shell powder, fly ash, etc.) adhered to the surface. Compared to the comprehensive method, it is superior in terms of contact between pollutant components of sewage and bacterial cells, and release of generated gas. It is necessary to increase the amount generated.
このような要請から、プラスチックの素材に嫌気性菌に
対する親和力が大きいとされる貝殻又はフライアッシュ
等の微粉末をエポキシ樹脂等の接着剤゛を介して付着さ
せたものが公知であるが、このものは微粉末表面の一部
が接着剤によって波型されるので実際の菌体が吸着可能
な表面積が減少してしまう欠点があり効果的でない欠点
がある。In response to these demands, it is known that fine powder such as shell or fly ash, which is said to have a high affinity for anaerobic bacteria, is attached to a plastic material through an adhesive such as an epoxy resin. Since part of the surface of the fine powder is corrugated by the adhesive, the surface area on which the actual bacterial cells can be adsorbed is reduced, making it ineffective.
本発明は、吸着法によって菌体を担持させる接触子材に
関するものであってＰＶＡ ｆｆ粒表面に活性炭等の多
孔質層を接着剤を使用しないで形成して菌体の担持能力
が大きい顆粒状接触子材を提供するものである。The present invention relates to a contact material that supports bacterial cells by an adsorption method, in which a porous layer of activated carbon or the like is formed on the surface of PVA ff particles without using an adhesive to form a granular material with a large ability to support bacterial cells. A contact material is provided.
本発明の素材となる完全鹸化ＰＶＡは嫌気性処理温度で
ある３５℃付近において水に不溶である上。Completely saponified PVA, which is the material of the present invention, is insoluble in water at around 35°C, which is the anaerobic treatment temperature.
その粉末は水によって容易に造粒化する性質がある。The powder has the property of being easily granulated by water.
上記目的における素材と水の割合は温度２０〜８０℃に
おいてＰＶＡ １００重量部に対し水５〜１０重量部の
範囲が好ましい。The ratio of material and water for the above purpose is preferably in the range of 5 to 10 parts by weight of water to 100 parts by weight of PVA at a temperature of 20 to 80°C.
本発明はそのような性質を利用して顆粒を成形し、更°
に造粒直後の含水又は７！Ａ潤状態において、無機質微
粉末を添着させるものであって、この添着に際して接着
剤又は接合剤を一切使用しないから無機多孔質の表面状
態を損なうことなくこれを素材粒子の全面に添着させる
ことができるのである。The present invention takes advantage of such properties to mold and reform granules.
Water content immediately after granulation or 7! In the wet state, inorganic fine powder is attached, and since no adhesive or bonding agent is used at all during this attachment, it is possible to attach it to the entire surface of the material particles without damaging the inorganic porous surface condition. It can be done.
なお、無機多孔質を加温下で素材粒子に被覆添着させる
ことによって実用上充分な強固な結合力が得られる。In addition, by coating and adhering the inorganic porous material to the material particles under heating, a strong bond strength sufficient for practical use can be obtained.
本発明ｒ材は上記の如き構成を有するから枦材自体の表
面積が大きい他、その前面に添着された多孔質物の多孔
が閉塞されていないので菌体量を高密度で担持させるこ
とができ、接触子材として擾れた効果を発揮するもので
ある。Since the R material of the present invention has the above-mentioned structure, the surface area of the resin material itself is large, and since the pores of the porous material attached to the front surface are not blocked, it is possible to carry a high density of bacterial cells. It exhibits excellent effects as a contact material.
本発明子材顆粒の大きさは、粒径が１〜１５ｍｍの範囲
内とし、固定床に用いる場合は目詰まり及び汚水の偏流
を避けるため大粒子を使用し、流動層の場合は、動力を
省力するため小径粒子を採用するのがよい。The size of the child material granules of the present invention is within the range of 1 to 15 mm. When used in a fixed bed, large particles are used to avoid clogging and uneven flow of sewage, and in the case of a fluidized bed, power is used. It is better to use small diameter particles to save labor.
この粒径は顆粒の造粒時における攪拌速度及び攪拌時間
によって調整できる。This particle size can be adjusted by the stirring speed and stirring time during granulation.
無機質多孔質物を活性炭とした場合の子材粒子の顆粒密
度は約０．５ｇ／ａｍ″、気孔率は約０．８である。When activated carbon is used as the inorganic porous material, the granule density of the child material particles is about 0.5 g/am'', and the porosity is about 0.8.
また各顆粒の気孔は連続気孔でありこの気孔は水中で水
と置換し、含水状態の顆粒密度は約１．１ｇ／ｃｍ″で
ある。Further, the pores of each granule are continuous, and the pores are replaced with water in water, and the granule density in a water-containing state is about 1.1 g/cm''.
従ってこの顆粒は、水中で沈降するが、固定床において
は上向流で通液することによって閉塞のおそれはなく使
用できる。また川砂又は粒状活性炭より比重は小さいか
ら流動層においては動力が少なくて済む利点がある。Therefore, although these granules settle in water, they can be used in a fixed bed by passing the liquid in an upward flow without fear of clogging. Also, since it has a lower specific gravity than river sand or granular activated carbon, it has the advantage of requiring less power in a fluidized bed.
実施例
完全鹸化ＰＶＡ （重合度１０００〜２５００． Ｍ
化度３８モル％以上） １００重量部をヘンシェルミキ
サ内で温度４０℃で攪拌速度５００〜１０００ｒｐ■と
して、冷水８重量部スプレーして１５分間造粒して粒径
３〜１５ＩＩＩ１１の顆粒ＰＶＡを得た。Examples Completely saponified PVA (polymerization degree 1000-2500.M
degree of 38 mol% or more) in a Henschel mixer at a temperature of 40°C and a stirring speed of 500 to 1000 rpm, sprayed with 8 parts by weight of cold water and granulated for 15 minutes to obtain granulated PVA with a particle size of 3 to 15III11. Ta.
上記造粒条件で粒度２５０メツシユの微粉末活性炭を１
０重量部添加して顆粒表面にコーディングして顆粒子材
を得た。Under the above granulation conditions, 1 piece of finely powdered activated carbon with a particle size of 250 mesh was added.
A granular material was obtained by adding 0 parts by weight and coating the surface of the granules.
顆粒構成粒子の密度は１．２７〜１．４０ ｇ／ｃｔｎ
”であり、又顆粒密度０．５〜０．５３ ｇ／ｃゴであ
るので気孔率は０．８１〜０．８２と計算された。The density of the granule constituent particles is 1.27 to 1.40 g/ctn
Since the granule density was 0.5 to 0.53 g/c, the porosity was calculated to be 0.81 to 0.82.
この子材を５メツシユの節で選別し粒径４〜１５１１１
を冷水に２４時間浸漬して含水させた。This child material was sorted by 5 mesh nodes and the particle size was 4 to 15111.
was immersed in cold water for 24 hours to absorb water.
この含水ｒ材を水切りした後、発酵槽試験装置（５ｃｍ
φＸ ４０ｃｍ、有効内容積６００ｍＡ ）に充填し、
種菌ニ節類加工煮汁（ＶＳ５％、ＴＯＣ１９，５００ｍ
ｇ／文、ＣＯＤ １７．０００ｍｇ／文、 ＢＯＤ ３
３．４０ｈｇ／文）を用いて、温度３７℃の恒温水槽中
でし尿嫌気性消化汚泥を種菌として適当な間隔で供給引
抜きを行なった。After draining this water-containing material, the fermenter test device (5 cm
φX 40cm, effective internal volume 600mA),
Inoculum and processed broth (VS5%, TOC19,500m
g/sentence, COD 17.000mg/sentence, BOD 3
Using human waste anaerobic digested sludge as a seed culture, supply and withdrawal were carried out at appropriate intervals in a constant temperature water tank at a temperature of 37° C.
この試験結果は、第１図及び第２図の如くであって本発
明子材はフライアッシュコートｐｖｃリングに比較して
高負荷になるに従いガス発生量及びガス発生原単位が大
きくなることが確認された。The test results are shown in Figures 1 and 2, and it was confirmed that the child material of the present invention has a higher gas generation amount and gas generation unit as the load increases compared to the fly ash coated PVC ring. It was done.
第１図は試験による消化ガス発生量を示すグラフ、第２
図はガス発生原単位のグラフである。Figure 1 is a graph showing the amount of digestive gas generated in the test, Figure 2
The figure is a graph of gas generation intensity.
Claims (3)
着せしめられ、粒径が１〜１５ｍｍ、含水時の顆粒密度
が１より大である汚水処理用嫌気性接触ろ材。(1) An anaerobic contact filter material for sewage treatment, in which fine inorganic powder is adhered to the surface of completely saponified PVA granules, the particle size is 1 to 15 mm, and the granule density when hydrated is greater than 1.
囲第１項記載の嫌気性接触ろ材。(2) The anaerobic contact filter medium according to claim 1, wherein the inorganic fine powder is activated carbon fine powder.
度下で攪拌しつつ冷水５〜１０重量部を添加して造粒し
、この造粒中又はその直後において微粉末活性炭２〜２
５重量部して粒径１〜１５ｍｍの顆粒とすることを特徴
とする汚水処理用嫌気性接触ろ材の製造法。(3) 100 parts by weight of completely saponified PVA is granulated by adding 5 to 10 parts by weight of cold water while stirring at a temperature of 20 to 80°C, and 2 to 2 parts by weight of finely powdered activated carbon is added during or immediately after the granulation.
A method for producing an anaerobic contact filter medium for wastewater treatment, characterized in that 5 parts by weight are made into granules with a particle size of 1 to 15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61112472A JPS62269797A (en) | 1986-05-19 | 1986-05-19 | Contact filter medium for anaerobic treatment of sewage and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61112472A JPS62269797A (en) | 1986-05-19 | 1986-05-19 | Contact filter medium for anaerobic treatment of sewage and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62269797A true JPS62269797A (en) | 1987-11-24 |
| JPH0160318B2 JPH0160318B2 (en) | 1989-12-21 |
Family
ID=14587490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61112472A Granted JPS62269797A (en) | 1986-05-19 | 1986-05-19 | Contact filter medium for anaerobic treatment of sewage and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62269797A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716585A (en) * | 1993-06-30 | 1995-01-20 | Denka Consult & Eng Co Ltd | Water-containing granulated carrier for organism treatment apparatus and method for manufacturing the carrier |
| JP2002159986A (en) * | 2000-11-27 | 2002-06-04 | Hitachi Chem Co Ltd | Carrier having inorganic particle stuck on the surface firmly for carrying microbe, sewage purifying tank and method or manufacturing the carrier for carrying microbe |
-
1986
- 1986-05-19 JP JP61112472A patent/JPS62269797A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716585A (en) * | 1993-06-30 | 1995-01-20 | Denka Consult & Eng Co Ltd | Water-containing granulated carrier for organism treatment apparatus and method for manufacturing the carrier |
| US5439858A (en) * | 1993-06-30 | 1995-08-08 | Denka Consultant And Engineering Co., Ltd. | Hydrated granular carrier prepared from polyvinyl alcohol and activated charcoal for biological treatment apparatus |
| ES2081768A1 (en) * | 1993-06-30 | 1996-03-01 | Denka Consult & Eng | Hydrated granular carrier prepared from polyvinyl alcohol and activated charcoal for biological treatment apparatus |
| JP2002159986A (en) * | 2000-11-27 | 2002-06-04 | Hitachi Chem Co Ltd | Carrier having inorganic particle stuck on the surface firmly for carrying microbe, sewage purifying tank and method or manufacturing the carrier for carrying microbe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0160318B2 (en) | 1989-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |