JPS63287596A - Fixed-bed type activated-sludge treatment of waste water - Google Patents
Fixed-bed type activated-sludge treatment of waste waterInfo
- Publication number
- JPS63287596A JPS63287596A JP62122496A JP12249687A JPS63287596A JP S63287596 A JPS63287596 A JP S63287596A JP 62122496 A JP62122496 A JP 62122496A JP 12249687 A JP12249687 A JP 12249687A JP S63287596 A JPS63287596 A JP S63287596A
- Authority
- JP
- Japan
- Prior art keywords
- activated sludge
- water
- carrier
- sewage
- tank
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 132
- 239000002351 wastewater Substances 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 50
- 239000010865 sewage Substances 0.000 claims abstract description 44
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 239000010842 industrial wastewater Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000011396 hydraulic cement Substances 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract 2
- 238000000576 coating method Methods 0.000 claims abstract 2
- 239000003344 environmental pollutant Substances 0.000 claims description 9
- 229920000620 organic polymer Polymers 0.000 claims description 9
- 231100000719 pollutant Toxicity 0.000 claims description 9
- 239000002952 polymeric resin Substances 0.000 claims description 5
- 244000005700 microbiome Species 0.000 claims description 3
- 238000005273 aeration Methods 0.000 abstract description 75
- 239000008187 granular material Substances 0.000 abstract description 5
- 238000007796 conventional method Methods 0.000 abstract description 4
- 230000003100 immobilizing effect Effects 0.000 abstract description 3
- 229920005830 Polyurethane Foam Polymers 0.000 abstract description 2
- 239000011496 polyurethane foam Substances 0.000 abstract description 2
- 239000000356 contaminant Substances 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 239000011400 blast furnace cement Substances 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 238000012545 processing Methods 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 10
- 239000000969 carrier Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 238000005842 biochemical reaction Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000000855 fermentation Methods 0.000 description 7
- 230000004151 fermentation Effects 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000009287 sand filtration Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 244000144977 poultry Species 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000007920 subcutaneous administration Methods 0.000 description 2
- 241000206761 Bacillariophyta Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 241000134884 Ericales Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- OSFPMGUDCNCPJJ-UHFFFAOYSA-M chlorosilver gold Chemical compound [Au].[Ag]Cl OSFPMGUDCNCPJJ-UHFFFAOYSA-M 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012050 conventional carrier Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- KSCFJBIXMNOVSH-UHFFFAOYSA-N dyphylline Chemical compound O=C1N(C)C(=O)N(C)C2=C1N(CC(O)CO)C=N2 KSCFJBIXMNOVSH-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000006228 supernatant Substances 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
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は下水、産業廃水の活性汚泥処理方法に関するも
ので、更に詳述すると下水、産業廃水の活性汚泥処理に
おいて活性汚泥を固定化できる特定の担体を用いて、こ
の固定化担体に下水、産業廃水を通水して、固定床型活
性汚泥法により処理する方法に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for treating sewage and industrial wastewater with activated sludge. The present invention relates to a method of treating sewage or industrial wastewater by a fixed bed activated sludge method using a carrier of the present invention, by passing sewage or industrial wastewater through the immobilized carrier.
（従来の技術）
一般に、下水及び産業廃水（以下、下廃水と略記）の活
性汚泥処理は次のように行なわれる。下廃水から土砂、
粗大な浮遊物質等の大部分を除去しｔ後、活性汚泥処理
設備の曝気槽において、活性汚泥処理を行うことにより
下廃水の汚濁物を分解し１次の汚泥沈降槽において活性
汚泥の沈降分離を行ない、上澄水は処理水として放流し
ている。(Prior Art) Generally, activated sludge treatment of sewage and industrial wastewater (hereinafter abbreviated as sewage water) is performed as follows. Sediment from sewage water,
After removing most of the coarse suspended solids, activated sludge treatment is performed in the aeration tank of the activated sludge treatment equipment to decompose the pollutants in the wastewater, and the activated sludge is sedimented and separated in the primary sludge settling tank. The supernatant water is discharged as treated water.
一方、汚泥沈降槽において沈降し次活性汚泥は返送汚泥
として曝気槽に戻し、まｔ一部は余剰汚泥として抜取り
、メタン発酵、焼却処理等によって処分している。On the other hand, the activated sludge settled in the sludge settling tank is returned to the aeration tank as return sludge, and some of the sludge is removed as surplus sludge and disposed of by methane fermentation, incineration, etc.
（発明が解決しようとする問題点）
このような下廃水の活性汚泥処理方法においては多くの
問題点が存在している。例えば、下廃水処理の活性汚泥
は、沈降性の指標である８ＶＩ（Ｓｌｕｄｇｅ Ｖｏｌ
ｕｍｅ Ｉｎｄｅｘ ）が高く、汚泥沈降槽において圧
密性の良好な沈降汚泥が得られ難く、ま九。(Problems to be Solved by the Invention) There are many problems in this activated sludge treatment method for wastewater. For example, activated sludge from sewage treatment has a sedimentation index of 8VI (Sludge Vol.
ume Index) is high, making it difficult to obtain settled sludge with good compaction in the sludge settling tank.
高負荷処理、負荷変動が大きい処理を行りｔす。Performs high-load processing and processing with large load fluctuations.
或いは活性−汚泥に糸状菌が発生すると活性汚泥がノ々
ルキング状態になり、沈降不良になる。Alternatively, if filamentous fungi occur in activated sludge, the activated sludge will become in a nokling state, resulting in poor sedimentation.
従って従来の下廃水の活性汚泥処理においては。Therefore, in the conventional activated sludge treatment of wastewater.
曝気槽の活性汚泥を高濃度に維持するのが困難であり、
この几め高負荷処理、処理時間の短縮、処理設備のコン
ノセクト化等逃理効率のアップに限界があり、ま几ノセ
ルキングが発生すると活性汚泥が汚泥沈降槽より流出し
、処理水質の低下を招き易い。It is difficult to maintain activated sludge in the aeration tank at a high concentration,
There is a limit to the improvement of escape efficiency due to this method of intensive high-load processing, shortening of processing time, and connosecting of processing equipment, and when no cellking occurs, activated sludge flows out from the sludge settling tank, leading to a decline in the quality of treated water. easy.
ま九、従来の下廃水の活性汚泥処理は１分解除去され几
ＢＯＤ５によって標示される汚濁物（以下ＢＯＤと略記
）の４０〜７０％が活性汚泥に変換され、活性汚泥が著
しく増殖する。活性汚泥が増殖すると汚泥沈降槽から処
理水に活性汚泥の流出があり、処理水の水質悪化を招く
ので、曝気槽の活性汚泥濃度を一定に維持する必要があ
り、この定め汚泥沈降槽より活性汚泥を余剰汚泥として
抜取る。この余剰汚泥は、メタン発酵、脱水焼却等が行
われている。Nineteenth, in the conventional activated sludge treatment of wastewater, 40 to 70% of the pollutants (hereinafter abbreviated as BOD) indicated by BOD5 are decomposed and removed, and 40 to 70% are converted into activated sludge, resulting in significant growth of activated sludge. When activated sludge proliferates, activated sludge flows out from the sludge settling tank into the treated water, leading to deterioration of the quality of the treated water. Therefore, it is necessary to maintain the activated sludge concentration in the aeration tank at a constant level. The sludge is extracted as surplus sludge. This surplus sludge is subjected to methane fermentation, dehydration, and incineration.
このため、従来の活性汚泥処理法では、処理設備を建設
する場合、広い土地を必要とし、ま九。For this reason, the conventional activated sludge treatment method requires large areas of land to construct treatment facilities, making it difficult to construct treatment facilities.
処理プロセスの簡略化、処理設備のコン、ｅクト化が困
難な禽め処理設備の建設にかなりの建設費が必要である
。Considerable construction costs are required to construct poultry processing equipment, which is difficult to simplify the processing process and make processing equipment compact and electronic.
このような下廃水処理の問題点を解決する一つの手段と
して高効率の活性汚泥処理技術の開発が要望されている
。従来、下廃水の活性汚泥処理を高効率に行なう方法と
して曝気槽の活性汚泥を高濃度に維持する方法があり、
この方法には流動層方式と固定床方式とがある。As a means of solving these problems in sewage treatment, there is a need for the development of highly efficient activated sludge treatment technology. Conventionally, a method for highly efficient activated sludge treatment of sewage wastewater has been to maintain activated sludge in an aeration tank at a high concentration.
This method includes a fluidized bed method and a fixed bed method.
流動層方式は、珪藻土等の土砂の微粒子あるいは活性炭
の粒子、又は多孔質の有機高分子物質の粒子を曝気槽に
添加し、これらの粒子を曝気により曝気槽内を流動させ
てこれに活性汚泥を付着させ、活性汚泥の沈降性を改善
して活性汚泥を高濃度に維持する方法である。In the fluidized bed method, fine particles of earth and sand such as diatomaceous earth, particles of activated carbon, or particles of porous organic polymer substances are added to an aeration tank, and these particles are made to flow through the aeration tank by aeration, and then activated sludge is added to this. This method maintains activated sludge at a high concentration by adhering it to the activated sludge and improving its sedimentation properties.
固定床方式は、有機高分子化合物よりなるノにカムチュ
ーブあるいは多層板を曝気槽に浸漬し。In the fixed bed method, a cam tube or multilayer plate made of an organic polymer compound is immersed in an aeration tank.
これに活性汚泥を付着させて固定化する方法である。This is a method of attaching activated sludge to it and fixing it.
しかし、これらの従来の方法ｖｃＦｉ多くの問題点かあ
つ几。However, these traditional methods of VCFi have many problems.
まず、珪藻上等の土砂の微粒子を用いｔ流動層方式は、
活性汚泥とこれらの無機系微粒子との親和性が十分でな
い几め、活性汚泥が安定して付着するのに長期間を要す
る。更に、これらの固定化担体は比重が大きいので、曝
気槽の内で均一に浮遊させる友めには大量の空気を吹き
込むか、微粒子を用いるか、又は特殊な形状の曝気槽が
必要である。First, the fluidized bed method uses fine particles of earth and sand such as diatoms.
Due to insufficient affinity between activated sludge and these inorganic particles, it takes a long time for activated sludge to stably adhere. Furthermore, since these immobilized carriers have a high specific gravity, it is necessary to blow a large amount of air, use fine particles, or use a specially shaped aeration tank to uniformly suspend them in the aeration tank.
大量の空気を吹き込むとエネルギー的に問題があり、ま
た微粒子を用いると処理水への流出などの問題があり、
さらに従来の箱型の曝気槽に適用するのがかなり困難で
ある。ま友、この担体に付着しｔ活性汚泥を余剰汚泥と
して処理する方法が十分に確立していない。Blowing in a large amount of air causes energy problems, and using fine particles causes problems such as leakage into the treated water.
Furthermore, it is quite difficult to apply it to a conventional box-shaped aeration tank. Friend, there is no well-established method for treating activated sludge that adheres to this carrier as surplus sludge.
粉末活性炭、有機系高分子化合物の粒子を用い几流動層
方式の場合、これらの粒子と活性汚泥との親和性は非常
に良く、活性汚泥が安定して付着する。しかし、この方
法で処理しｔ後の余剰汚泥をメタン醗酵法により処理す
る場合、メタン醗酵後；これらの粒子を再生利用する技
術が十分に確立していない。ま九、余剰汚泥を焼却処理
する場合、これらの担体粒子は、無機系担体粒子に比べ
てコスト的に高く、再生利用が不可能であると下廃水処
理のコストを高める原因となる。In the case of a fluidized bed method using particles of powdered activated carbon or an organic polymer compound, the affinity between these particles and activated sludge is very good, and the activated sludge adheres stably. However, when the surplus sludge after treatment by this method is treated by a methane fermentation method, the technology for recycling these particles after methane fermentation has not been sufficiently established. (9) When incinerating surplus sludge, these carrier particles are more expensive than inorganic carrier particles, and if they cannot be recycled, they will increase the cost of wastewater treatment.
一方、有機高分子化合物の７にカムチューブ。On the other hand, cam tube is the organic polymer compound 7.
積層板等を活性汚泥の固定床型担体に用いた固定床方式
の場合、活性汚泥とこれらの担体との親和性が良好なｉ
め汚泥が容易に付着するが、増殖し１活性汚泥によって
担体の閉塞が起りやすく、この九め、これらの担体を曝
気槽より取り出し、水洗等による洗浄を度々行なって再
生する必要がある。しかし、これらの固定床型担体に付
着し１活性汚泥は、固定床の構造が複雑であり、まｔ、
担体と活性汚泥との親和力が高い文め簡単な水洗等゛で
は再生が困難であり、再生に煩雑な処理を必要とする。In the case of a fixed bed system using laminated plates etc. as fixed bed carriers for activated sludge, it is possible to
Activated sludge easily adheres to the carrier, but it proliferates and the activated sludge tends to clog the carrier, and it is necessary to remove these carriers from the aeration tank and wash them with water frequently to regenerate them. However, activated sludge adhering to these fixed bed type carriers has a complicated fixed bed structure, and
Because the carrier has a high affinity with activated sludge, it is difficult to regenerate it by simple washing with water, and complicated treatment is required for regeneration.
以上述べｔように、従来の活性汚泥を固定化する担体及
び固定床は、活性汚泥との親和性、再利用性、取り扱い
性、コスト等に問題があり、大規模な活性汚泥処理に適
用するのが困難である。As mentioned above, conventional carriers and fixed beds for immobilizing activated sludge have problems with compatibility with activated sludge, reusability, ease of handling, cost, etc., and are difficult to apply to large-scale activated sludge treatment. It is difficult to
これらの従来の活性汚泥の固定化担体の問題点を解決す
る定め５本発明の発明者の１人は多孔性セラミックスを
用いることを発明し友（％願ＥＩ３６１−１８４９３５
号）。この発明によれば前述の従来の問題点をほとんど
解決できる。しかし、セラミックスを製造する際に高温
で焼成する間距点が残されている。In order to solve these problems of conventional activated sludge immobilization carriers, one of the inventors of the present invention invented the use of porous ceramics (% Application EI361-184935).
issue). According to the present invention, most of the above-mentioned conventional problems can be solved. However, when manufacturing ceramics, there remains a gap in firing at high temperatures.
本発明の目的は、前述し定従来法による下廃水の活性汚
泥処理の問題点を解決するｔめに新規な固定化担体を用
いる高効率活性汚泥処理方法を提供することにある。An object of the present invention is to provide a highly efficient activated sludge treatment method using a novel immobilization carrier in order to solve the aforementioned problems of activated sludge treatment of sewage wastewater by conventional methods.
（問題点を解決する九めの手段）
本発明は、高炉水砕を主原料とし友無機系微粉に水硬性
セメントを配合した配合物の水添混合物をスポンジ状の
有機高分子系樹脂に被覆して１５００以下で固化させて
得られた三次元網目構造をもつ次固定化担体に下水、産
業廃水の汚濁物を分解する微生物を付着させ、これに酸
素を溶存させた下水ま几は産業廃水を通水して処理する
ことを特徴とする排水の固定床型活性汚泥処理方法であ
る。(Ninth Means to Solve the Problem) The present invention covers a sponge-like organic polymer resin with a hydrogenated mixture of a mixture of blast furnace granulated water as the main raw material and inorganic fine powder mixed with hydraulic cement. Microorganisms that decompose pollutants in sewage and industrial wastewater are attached to a secondary immobilization carrier with a three-dimensional network structure obtained by solidifying at a temperature of 1,500 mL or less, and a sewage tank with oxygen dissolved therein is produced as an industrial wastewater. This is a fixed-bed activated sludge treatment method for wastewater, which is characterized by passing water through it.
微生物としては活性汚泥、硝化菌などを用いる。Activated sludge, nitrifying bacteria, etc. are used as microorganisms.
ま几１本発明を実施する場合には、多孔性固定化担体を
活性汚泥の固定床として用いると同時に活性汚泥処理装
置の曝気槽（生物化学的反応槽）の酸化還元電位（以下
、ＯＲＰと略記）を、固定化されｔ活性汚泥が下廃水の
汚濁物を分解するのに適正な一定の範囲に管理すること
が望ましい。1. When carrying out the present invention, a porous immobilized carrier is used as a fixed bed for activated sludge, and at the same time the oxidation-reduction potential (hereinafter referred to as ORP) of the aeration tank (biochemical reaction tank) of the activated sludge treatment equipment is used. (abbreviated)) is desirably controlled within a certain range that is appropriate for the immobilized activated sludge to decompose pollutants in sewage water.
（作 用） 以下１本発明の方法について詳細に説明する。(for production) Below, one method of the present invention will be explained in detail.
本発明者等は下水の活性汚泥処理方法について研究する
過程で、活性汚泥が存在する曝気槽中に多孔性のセラミ
ックスを浸漬すると活性汚泥がセラミックス内部に積極
的に入り込むことを知見し九。そこでこの知見を基にセ
ラミックスを下水の活性汚泥処理における汚泥の担体と
して利用することを試み友ところ有効なことを見い出し
７ｔ（％願昭６１−１８４９３５号）。しかし、この先
願発明で用いるセラミックスの固定化担体を作る場合、
アルミナ、シリカ、高炉水砕等の微粉を高温で焼成する
必要があった。In the process of researching methods for treating sewage with activated sludge, the present inventors discovered that when porous ceramics are immersed in an aeration tank in which activated sludge is present, activated sludge actively enters inside the ceramics9. Based on this knowledge, we tried to use ceramics as a sludge carrier in activated sludge treatment of sewage and found that it was effective (7t patent application No. 184935/1986). However, when making the ceramic immobilization carrier used in this prior invention,
It was necessary to sinter the fine powders of alumina, silica, blast furnace granules, etc. at high temperatures.
そこで、高温で焼成するセラミックスと同等又はそれ以
上の性能を有する活性汚泥の固定化担体を焼成すること
なく容易に製造する方法を鋭意研究する過程で、高炉水
砕を主成分とする無機系微粉に水硬性セメントを配合し
て硬化させて利用することに着目した。例えば高炉水砕
とセメントとアルミナ−シリカ系の微粉を各々５０〜９
０重量％Ｓ １０〜３０重−１％、２〜２０重量係重量
台いで混合し、これに水ｔ？加えて混練して放置すると
常温で約２日もすると持ち運びが可能な程度に固化する
。そこで、前述の高炉水砕を主成分とする無機系微粉に
水硬性セメントを配合し几混合物を水に分散させｍ乳濁
液に多孔性の有機系高分子樹脂のスポンジを浸漬して、
余分に付着している乳濁液をロールによりｔり取り、そ
の後、２日間程度室温で静置しておくと、有機系高分子
樹脂のスポンジＯｆｆ！Ｌ維の周囲に、前記混合物が
固結して付着【１％使用しｔ有機系高分子樹脂のスポン
ジと同じ形状の多孔性のブロックが得られる。この固化
処理では１５０Ｃまでの温度で乾燥固化することにより
本発明を実施するのに適し几固定化担体が得られる。Therefore, in the process of intensive research into a method to easily produce an immobilized activated sludge carrier without firing, which has performance equivalent to or better than ceramics fired at high temperatures, we developed an inorganic fine powder mainly composed of blast furnace granulated water. We focused on using it by mixing hydraulic cement with it and letting it harden. For example, blast furnace granulated powder, cement, and alumina-silica powder each have 50 to 9
0% by weight S 10-30% by weight - 1% by weight, 2-20% by weight Mix on a weight scale, and add water to this. If you add it and knead it and leave it for about two days at room temperature, it will solidify to the extent that you can carry it around. Therefore, the above-mentioned inorganic fine powder mainly composed of blast furnace granules was mixed with hydraulic cement, the mixture was dispersed in water, and a porous organic polymer resin sponge was immersed in the emulsion.
Remove the excess emulsion with a roll and then leave it at room temperature for about 2 days to remove the organic polymer resin sponge. The mixture solidified and adhered around the L fibers to obtain a porous block having the same shape as an organic polymer resin sponge. In this solidification process, by drying and solidifying at a temperature of up to 150C, a solidified carrier suitable for carrying out the present invention can be obtained.
このようにして製造した多孔性のブロックは。The porous blocks produced in this way.
前記先願発明で用いた多孔性セラミックスと同様に、活
性汚泥が存在する曝気槽に浸漬すると活性汚泥がこのブ
ロック内部に積極的に入いりこみ。Similar to the porous ceramics used in the prior invention, when immersed in an aeration tank containing activated sludge, the activated sludge actively enters the inside of the block.
活性汚泥を固定化する性状を有する。It has the property of immobilizing activated sludge.
このように１本発明では多孔性のブロック（多孔性固定
化担体）Ｆｉセラミックスのように高温で焼成する必要
もなく、ま皮ロール絞りにより高炉水砕を主成分とする
無機物の付着量を容易にコントロールすることができる
利点もあり、セラミックスよりも製造が簡便である。In this way, the present invention does not require firing at a high temperature unlike porous block (porous immobilized carrier) Fi ceramics, and it is easy to reduce the amount of inorganic matter mainly composed of blast furnace water granules by squeezing with a shell roll. It also has the advantage of being able to be controlled, and is easier to manufacture than ceramics.
なお本発明は、固定化担体として高炉水砕を主原料とす
る無機系微粉に水硬性セメントラ配合し禽基本成分系の
ものを用いるが、高炉水砕以外の無機系微粉としては例
えばＡ／２０３，８ｉ０□、ＯａＯ。In the present invention, as an immobilization carrier, an inorganic fine powder mainly made from granulated blast furnace granules is mixed with hydraulic cementola and is based on poultry basic ingredients. , 8i0□, OaO.
ＭｌＯ，８ｚ Ｏ−８ｉ ｓ Ｎ ａ等の１種ま几は２
種以上が使用できる。ま几、水硬性セメントはその水和
生成物の結合力で無機系微粉粒子を結合するもので１例
えばアルミナセメントやポルトランドセメントを用いる
ことができる。One type of MlO, 8z O-8is Na etc. is 2
More than one species can be used. Hydraulic cement binds inorganic fine powder particles by the binding force of its hydration product, and for example, alumina cement or Portland cement can be used.
本発明においてこの多孔性固定化担体を活性汚泥の担体
として利用する場合は、これをカセット状にして用いる
のが工業的には最も望ましい。When this porous immobilization carrier is used as a carrier for activated sludge in the present invention, it is industrially most desirable to use it in the form of a cassette.
多孔性固定化担体で構成されるカセツ）１下廃水の処理
に適用する几めの処理条件と活性汚泥処理設備における
生物化学反応槽の構造等について第１図によって説明す
る。Cases composed of porous immobilized carriers) 1 The elaborate treatment conditions applied to the treatment of sewage water and the structure of the biochemical reaction tank in the activated sludge treatment equipment will be explained with reference to FIG.
第１図は＠１曝気槽２とｗｃ２曝気槽３の中間に多孔性
固定化担体カセット １を配置し九下水の生物化学処理
装置で、第１曝気槽２と第２曝気槽３の下部には曝気用
散気管１１がパイプを介して曝気用ブロアー９に接続さ
れて設けられている。Figure 1 shows a biochemical treatment system for sewage in which a porous immobilized carrier cassette 1 is placed between the @1 aeration tank 2 and the wc2 aeration tank 3, and the porous immobilized carrier cassette 1 is placed between the first and second aeration tanks 2 and 3. An aeration diffuser pipe 11 is connected to an aeration blower 9 via a pipe.
まｔ処理水１２を排出する側の第２曝気槽３にはＯａＰ
センサー４が配置され、このＯＲＰセンサー４はＯＲＰ
制御装置５に接続されるとともに。OaP is installed in the second aeration tank 3 on the side that discharges the treated water 12.
A sensor 4 is arranged, and this ORP sensor 4 is an ORP
As well as being connected to the control device 5.
ｏａｐ制御装置！５には曝気量調整用電磁弁１０が導線
を介して接続され、該電磁弁１０は曝気用散気管１１と
曝気用ブロワ−９の間に配置され、１０１’ＬＰ制御装
置５の指示により作動して曝気量を制御できるようにな
っている。なお、６は記録計。oap control device! 5 is connected to an aeration amount adjusting solenoid valve 10 via a conductive wire, the solenoid valve 10 is arranged between the aeration diffuser pipe 11 and the aeration blower 9, and is activated by instructions from the LP control device 5. The amount of aeration can be controlled by In addition, 6 is a recorder.
７は下廃水供給用ポンプ、８は下廃水調整タンクである
。7 is a pump for supplying sewage water, and 8 is a sewage water adjustment tank.
この第１図に示す曝気槽に種汚泥として下水の活性汚泥
の混合液（活性汚泥濃度１０００〜５０００ ｍｇ／ｌ
）を入れると活性汚泥が多孔性固定化担体の孔、或いは
空隙に入り込み、第１曝気槽２と第２曝気槽３は一定の
時間を経過するとほぼ透明になる。そこで空気ま次は酸
素（以後酸素含有曝気用気体と称する）を曝気用散気管
１１エリ吸込み、第１．第２曝気槽の曝気を行う。A mixed solution of activated sludge from sewage (activated sludge concentration 1000 to 5000 mg/l) was added to the aeration tank shown in Figure 1 as seed sludge.
), the activated sludge enters the pores or voids of the porous immobilization carrier, and the first aeration tank 2 and the second aeration tank 3 become almost transparent after a certain period of time. Therefore, the air tank sucks oxygen (hereinafter referred to as oxygen-containing aeration gas) into the aeration diffuser pipe 11. Aerate the second aeration tank.
次に下廃水を通水し、下廃水が第１１１１ｆｉ槽２゜３
槽（多孔性固定化担体カセット１配ｒｌＬ部）及び第２
曝気槽３を通過する見かけの通過時間（処理時間に相当
する）が１６時間になるように調整し。Next, sewage water is passed through, and the sewage waste water is transferred to No. 1111fi tank 2゜3.
tank (porous immobilization carrier cassette 1st part RL part) and 2nd part
Adjustments were made so that the apparent transit time (corresponding to processing time) through the aeration tank 3 was 16 hours.
その後、処理時間を逐次短縮して活性汚泥の馴養を行な
い、定常は２〜８時間で処理を行なう。この馴養は約１
０〜３０日間程度で良い。Thereafter, the treatment time is gradually shortened to acclimatize the activated sludge, and the treatment is normally carried out for 2 to 8 hours. This familiarity is approximately 1
Approximately 0 to 30 days is sufficient.
ま几、第１曝気槽２及び第２曝気槽３に吹き込む酸素含
有曝気用気体の曝気量は、第１図に示す第２１１３気槽
３に配置され九ｏＦＬｐセンサー４により第２曝気槽３
のＯＲＰを針側しながらＯＲＰが適正値になるようにＯ
ＲＰ制御装置５により電磁弁１０を介してコントロール
する。The amount of aeration of the oxygen-containing aeration gas blown into the first aeration tank 2 and the second aeration tank 3 is determined by the 9oFLp sensor 4 located in the 2113th aeration tank 3 shown in FIG.
While keeping the ORP on the needle side, adjust the O so that the ORP becomes the appropriate value.
It is controlled by the RP control device 5 via the solenoid valve 10.
下水の場合、活性汚泥処理の曝気槽のＯＲＰと処理水と
の関係は本発明者らの研究から曝気槽出口のｏＦＬｐを
θ〜＋１５０ ｍＶに管理すれば処理水のＢＯＤを２０
ｍｇ／！以下に維持できることが明らかになっている
。このことから、第２曝気槽３は、従来の活性汚泥処理
の曝気槽の出口に相当するので、核種３のＯＲ，Ｐ ′
Ｊ＆：０〜＋ １５０ ｍＶ に管理することによっ
て良好な水質を有する処理水が得られる。In the case of sewage, the relationship between the ORP of the aeration tank for activated sludge treatment and the treated water is based on the research of the present inventors.If the oFLp at the aeration tank outlet is controlled to θ ~ +150 mV, the BOD of the treated water can be reduced to 20 mV.
mg/! It has been shown that the following can be maintained. From this, the second aeration tank 3 corresponds to the outlet of the aeration tank in conventional activated sludge treatment, so the OR, P' of the nuclide 3
By controlling the voltage to J&: 0 to +150 mV, treated water with good water quality can be obtained.
ま九、産業廃水の場合は、廃水の種類によって適正なＯ
ＲＰ値が異なる。例えば、ａ鉄所のコークス工場から発
生するガス廃液の場合、第２曝気槽３のＯｎ Ｐ ｔｌ
−＋ １５０〜＋ ２５０ ｍＶ（金−塩化銀／銀複合
電極の測定値）に管理すれば良好な水質鷺有する処理水
が得られる。9. In the case of industrial wastewater, the appropriate O
RP values are different. For example, in the case of gas waste liquid generated from a coke factory at ironworks a, On P tl of the second aeration tank 3
- + 150 to + 250 mV (measured value of gold-silver chloride/silver composite electrode), treated water with good water quality can be obtained.
本発明法では、下廃水に含まれている汚濁物の分解は、
＠１図の第１曝気槽２において流入し皮下廃水に酸素含
有曝気用気体を吹き込むことにより酸素を溶解させ１次
のＢ槽の多孔性固定化担体カセット１に通水するとカセ
ットに付着している活性汚泥が溶存酸素を利用して下廃
水の汚濁ｖ；５’を分解する。更に、第２＠気槽３にお
いて酸素を俗解させることによりＢ槽において分解しな
かった汚濁物を分解し交り、或いは、悪臭の原因物質の
除去を行ない、まｔ、処理水を好気状態にする。In the method of the present invention, the decomposition of pollutants contained in sewage water is
In the first aeration tank 2 in Figure 1, oxygen-containing aeration gas is blown into the subcutaneous wastewater to dissolve oxygen, and when the water is passed through the porous immobilization carrier cassette 1 in the primary tank B, it adheres to the cassette. The activated sludge used in the system uses dissolved oxygen to decompose pollutants in sewage water. Furthermore, by introducing oxygen in the second tank 3, the pollutants that were not decomposed in tank B are decomposed, or substances that cause bad odors are removed, and the treated water is kept in an aerobic state. Make it.
その結果後述するように従来法に比べてずぐれ九効果が
得られる。As a result, as will be described later, a superior effect can be obtained compared to the conventional method.
多孔性固定化担体の孔の形状については、特に適切な形
状はないが、前述のような方法により多孔性固定化担体
を製造すると、大部分が円形状の孔を形成する。また、
最適な孔の直径は１〜５０程度が良く、孔の大きさは特
に揃える必要がなく。There is no particularly suitable shape for the pores of the porous immobilization carrier, but when the porous immobilization carrier is produced by the method described above, most of the pores are circular. Also,
The optimum hole diameter is about 1 to 50 mm, and there is no need to make the hole sizes the same.
この程度の直径範囲に分布していれば十分に使用するこ
とができる。If it is distributed within this diameter range, it can be used satisfactorily.
まｔ、多孔性固定化担体の孔の構造は、活性汚泥の付着
性、下水処理過程における閉塞性に著しく影響する。例
えば、多孔性固定化担体の孔がハニカムチューブのよう
に入口と出口とが一気通貫で、いわゆる二次元構造の場
合、下廃水処理を行なうと簡単に閉塞するが、この孔が
枝分れ、各孔と連結し皮、いわゆる三次元構造の孔にす
ると閉塞が起り難いことが経験的に明らかになっている
。Furthermore, the pore structure of the porous immobilization carrier significantly influences the adhesion of activated sludge and the clogging property during the sewage treatment process. For example, if the pores of a porous immobilization carrier have a so-called two-dimensional structure, such as a honeycomb tube, where the inlet and outlet are straight through, they will easily become clogged during wastewater treatment, but if the pores are branched, It has been empirically revealed that blockage is less likely to occur if the holes are connected to each other and have a so-called three-dimensional structure.
次に本発明における多孔性固定化担体のカセットの設置
方法について説明する。Next, a method for installing a cassette of a porous immobilization carrier in the present invention will be explained.
まず、多孔性固定化担体は製造方法によっては１〜２ｍ
の厚さを有する１体の多孔性固定化担体を製造するのが
困難な場合がある。このような場合ＶＣは１例えば、厚
さ２〜１０？＋１の板状多孔性固定化担体を集成して使
用すれば良い。その場合。First, the porous immobilization carrier is 1 to 2 m long depending on the manufacturing method.
It may be difficult to produce a single porous immobilization carrier with a thickness of . In such a case, VC is 1, for example, thickness 2-10? +1 plate-shaped porous immobilization carriers may be assembled and used. In that case.
これを単にｗｃ１図のＢ槽に並べてセットするのではな
（、Ｂ槽の下廃水の流れ方向に対して５〜２５等分の厚
さを有するカセットを作り、このカセット別に板状の多
孔性固定化担体をセットするのが良く、ま几、このカセ
ットの場合、多孔性固定化担体の平面（厚さ方向でない
）Ｆｉ、下廃水の流れに対して直角になるようにセット
するのが良い。Rather than simply setting them side by side in tank B in the wc1 diagram (i.e., make a cassette with a thickness equal to 5 to 25 times in the direction of flow of the sewage water in tank B, and insert a plate-shaped porous It is best to set the immobilization carrier, and in the case of this cassette, it is best to set it so that the plane (not in the thickness direction) of the porous immobilization carrier is perpendicular to the flow of wastewater. .
これらのカセットの設置方法は、下廃水がこのカセット
を効率良く通過するように１例えばカセットの両サイド
及び底部、或いはＢＷｌの側壁、底部などにクールをし
て下廃水がセラミックスカセット面だけから通過するよ
うにするのが好ましい。The method for installing these cassettes is to make sure that the wastewater passes through the cassette efficiently.1 For example, cool the sides and bottom of the cassette, or the side walls and bottom of the BWl, so that the wastewater passes only through the ceramic cassette surface. It is preferable to do so.
次に、７７セツトの閉塞及び閉塞しｍ場合の再生利用方
法について説明する。Next, the blocking of the 77 sets and the recycling method in the case of blocking will be explained.
多孔性固定化担体のカセットに活性汚泥を付着させて下
廃水を生物化学的に処理を行なう場合。When activated sludge is attached to a porous immobilization carrier cassette to biochemically treat wastewater.
長期間処理を行なっていると下廃水に含まれている浮遊
性汚濁物質或いは活性汚泥の増殖に工って多孔性固定化
担体のカセットが閉塞することがある。If the treatment is carried out for a long period of time, the cassette of the porous immobilization carrier may become clogged due to the proliferation of floating pollutants or activated sludge contained in the wastewater.
この閉塞は、第１図に示すＢ１４！の１番最初のカセッ
ト（第１曝気槽２に最も近い部分）が起り易く、カセッ
トの閉塞が起っｍ場合、或いは、閉塞に近い状態になつ
友らこのカセットを取り出し。This blockage is B14! shown in FIG. If the first cassette (the part closest to the first aeration tank 2) is likely to become clogged, or if the cassette is close to being clogged, remove this cassette.
２番目のカセットを１番目の位１１に、３番目のカセッ
トを２番目の位置にと水平方向に順次移動させ、一番最
後のカセット（第２曝気槽３に近い部分）に新しいカセ
ット又は閉塞し九カセットヲ再生しｔものを設置する。Move the second cassette to the first position 11, the third cassette to the second position, and so on in the horizontal direction, and place a new cassette or a blockage in the last cassette (the part near the second aeration tank 3). I played nine cassettes and set up a device.
このように多孔性固定化担体のカセットを循環交換する
方式は、下廃水処理を行ないながらカセットの交換が可
能で、しかも、＠理効率及び処理水質の低下を招くこと
もないので最適な方法である。This method of circulating and exchanging the cassettes of porous immobilization carriers is an optimal method because it allows the cassettes to be exchanged while treating wastewater and does not cause a decrease in treatment efficiency or treated water quality. be.
次に閉塞しｔ、または閉塞に近い状態の多孔性固定化担
体のカセットの再生力法について説明する。Next, a method for regenerating a cassette of a porous immobilization carrier that is occluded or nearly occluded will be described.
Ｂｄエリ引上げたカセットは、静止しておくと内部に含
くまれている水が流出し、かなりの水分全除去すること
ができる。まｔ、内部に付着している活性汚泥は、高圧
水による水洗により容易に除去することができ、この水
洗しｍカセットは。If the cassette is kept stationary, the water contained inside will flow out, and a considerable amount of water can be completely removed. Additionally, activated sludge adhering to the inside of the cassette can be easily removed by washing with high-pressure water.
直ちに再使用することができる。このような方法により
再生し九カセットは、活性汚泥の付着機能が損われない
ので、再使用が可能である。Can be reused immediately. The nine cassettes regenerated by this method can be reused because the activated sludge adhesion function is not impaired.
１７’ｊ、活性汚泥が付着しｍカセットをそのままメタ
ン醗酵槽に入れるとメタン醗酵が起り、メタンを回収す
ることができ、更に、メタン醗酵後のカセットは、高圧
水により水洗することにより再使用が可能になる。17'j, If activated sludge adheres to the m cassette and it is placed directly into the methane fermentation tank, methane fermentation will occur and methane can be recovered.Furthermore, the cassette after methane fermentation can be reused by washing it with high-pressure water. becomes possible.
なお１本発明の方法は、余剰汚泥の発生が均一混合型活
性汚泥処理法の約１／１ｏであり、余剰汚泥を処理する
設備をかなり簡略化することができる。Note that in the method of the present invention, the generation of surplus sludge is about 1/1 of that of the homogeneous mixed activated sludge treatment method, and the equipment for treating surplus sludge can be considerably simplified.
次に、第１図の第１曝気槽２．Ｂ槽及び第２曝気槽３の
容積の比率は、経験的にＢ槽の１．０＋に対して第１曝
気槽２．第２曝気槽３が各々０．２５〜１．０の範囲が
良く、最適な比率は、＠１＠気槽２が０．５．Ｂ槽が１
．０．第２曝気４１ｙ３が０．５テアル。Next, the first aeration tank 2 in FIG. Empirically, the volume ratio of the B tank and the second aeration tank 3 is 1.0+ for the B tank to the first aeration tank 2.0+. The ratio for the second aeration tank 3 is preferably in the range of 0.25 to 1.0, and the optimal ratio is @1 for the aeration tank 2 to 0.5. 1 tank B
．． 0. The second aeration 41y3 is 0.5 theal.
なお１本発明の他の実施態様として、第２図に示すよう
に多孔性固定化担体カセットｌを一定の間隔をあけて設
け、このカセット間の間隙の下方から酸素含有曝気用気
体を吹込み、下水中に酸素を溶存させて４良い。As another embodiment of the present invention, porous immobilized carrier cassettes l are provided at regular intervals as shown in FIG. 2, and oxygen-containing aeration gas is blown from below the gap between the cassettes. , 4 good for dissolving oxygen in sewage.
下廃水を活性汚泥法により処理し７を後、処理水より活
性汚泥を分離する汚泥沈降槽は１本発明の場合、活性汚
泥が８槽の多孔性固定化担体の内にほぼ完全に保持され
、第２曝気、４３にほとんど流出しない友め、一般の下
水の活性汚泥処理に存在している活性汚泥沈降槽は、省
略又は簡略化することができる。In the case of the present invention, the activated sludge is almost completely retained in the porous immobilization carrier of 8 tanks. The activated sludge settling tank, which is present in the activated sludge treatment of general sewage, can be omitted or simplified.
まｔ１本発明の場合、活性汚泥が８．１の多孔性固定化
担体内にほぼ完全に保持されているので、汚泥沈降槽の
代りに砂濾過装置、ｉ莫分離装置ｉｔ−用いても良い。In the case of the present invention, the activated sludge is almost completely retained within the porous immobilization carrier described in 8.1, so a sand filtration device or a separator may be used instead of the sludge settling tank. .
この場合、多孔性固定化担体が閉塞していない場合、活
性汚泥がほとんど流出しないので砂濾過！！、膜分離装
置を稼動させても良い。In this case, if the porous immobilization carrier is not clogged, almost no activated sludge will flow out, so sand filtration is the answer! ! , a membrane separation device may be operated.
砂濾過装置、模分雌装償を稼動させ友場合には水質が非
常に良好な処理水が得られるので、この処理水はこのま
ま工業用水、中水道等に再使用することができる。ま交
、多孔性固定化担体が活性汚泥による閉塞又は閉塞が近
くなつ窺場合、或いは、カセット交換時に活性汚泥の剥
離流出が起るので砂濾過装ｆａ、膜分離装置を用いると
活性汚泥処理水η１らの１ｎ液分離が容易で、良好な処
理水が得られる。When the sand filtration device and the water filter are operated, treated water of very good quality can be obtained, and this treated water can be reused as industrial water, gray water, etc. as it is. If the porous immobilization carrier is blocked or close to being blocked by activated sludge, or when the cassette is replaced, the activated sludge may peel off and flow out. It is easy to separate the 1N liquid of η1 and others, and good treated water can be obtained.
（実施例） 次に本発明の実施例について説明する。(Example) Next, examples of the present invention will be described.
実施例１
第１図の尖状装置の生物化学的反応ｒ４（第１曝気槽２
・・・１０／’、Ｂ槽・・・２０Ｉ！、第２１赫気情３
・・・１０１）に都市下水処理の曝気槽より採取した活
性汚泥混合液３０／を入れ１次に、Ｂ槽に板状の孔サイ
ズが２〜５Ｒである高炉水砕を主原料とする多孔性固定
化担体５枚よりなるカセット１をセットした。この多孔
性固定化担体は、高炉水砕段７０゛塩ｆ％、７リカフラ
ワー２０重合％、ポルトランドセメント１０重量％エリ
なる混合体を水に分散させてスラリーを作り、このスラ
リー中にポリウレタンフォームをｉｌし７ｔ ＋＆フロ
ール絞す。Example 1 Biochemical reaction r4 of the pointed device in Fig. 1 (first aeration tank 2
...10/', B tank...20I! , 21st Keijo 3
... 101) is filled with activated sludge mixture 30% collected from an aeration tank for urban sewage treatment, and then in tank B, a porous plate with a plate-shaped pore size of 2 to 5R is made mainly from blast furnace granulated water. A cassette 1 consisting of five sex-immobilized carriers was set. This porous immobilization carrier is made by dispersing in water a mixture of blast furnace granulation stage 70゜salt f%, 7 lica flour 20% polymerization, and Portland cement 10% by weight to create a slurry, and polyurethane foam is added to the slurry. il and squeeze 7t + & flor.
１５００以下で乾燥固化して製造し友。約３時間後には
、両曝気ｆ３２．３が透明になり、活性汚泥が多孔性固
定化担体の内部に吸着されたことが確認てれ几。Manufactured by drying and solidifying at a temperature of 1,500 ml or less. After about 3 hours, both aeration f32.3 became transparent, confirming that the activated sludge was adsorbed inside the porous immobilization carrier.
この状態になつ九ら第１表に示す人工下水を第１曝気ｐ
３２から笥２［１１気槽３までの通過時間が１６時藺、
１２時間、８時間、６時間、４時間、３時間、２時間？
ｅ付着しｔ活性汚泥を人工下水に馴養し、その後１通過
時間２〜３時間にして処理を長期間性なつｔｏこの時の
第２曝気槽３のＯＲＰは＋１５０ ｍＶに制御して、第
１曝気槽２及び第２曝気槽３に吹き込む空気量をコント
ロールし友。ま７ｔ、溶存酸素濃度は、第１曝気槽２が
１．０〜１．５ ｐｐｒｎ ａ 第２曝気槽３が２〜５
ｐｐｍであつ九。なお、汚泥の返送は行わなかつ九〇処
理性能を第２表に示す。The artificial sewage shown in Table 1 in this state is subjected to the first aeration process.
Passage time from 32 to 11 air tank 3 is 16 o'clock,
12 hours, 8 hours, 6 hours, 4 hours, 3 hours, 2 hours?
The adhering activated sludge is acclimatized to artificial sewage, and then the treatment is carried out for a long period of time by setting one passage time to 2 to 3 hours.The ORP of the second aeration tank 3 at this time is controlled to +150 mV, Controls the amount of air blown into the aeration tank 2 and the second aeration tank 3. The dissolved oxygen concentration is 1.0 to 1.5 pprn in the first aeration tank 2 and 2 to 5 in the second aeration tank 3.
Atsushi in ppm. Table 2 shows the 90 treatment performance without returning the sludge.
第１表 人工下水の組成と性状
（平均値ｍ ｔ／ ｌ ）
第２表の結果より、５枚の板状の多孔性固定化担体カセ
ットを配置し１生物化学的反応槽は。Table 1 Composition and properties of artificial sewage (average value m t/l) From the results in Table 2, one biochemical reaction tank was prepared by arranging five plate-shaped porous immobilization carrier cassettes.
ＢＯＤ容積負荷量が通常の活性汚泥処理（ＢＯＤ容積負
荷量０．５にｆ ／ ｍ・日）の約４〜５倍、即ちＢ
ＯＤ ５２．４ ｋｇ／ｍ ・日の高負荷処理を行な
っても処理水ｆ７） Ｂ ＯＤ５は５ｍ１ｊ／ｌ以下（
除去率９８％以上）、ＯＯＤＭｆＩ（平均値）が８．２
■／／（除去率９０％）及びＳＳ（平均値）が５！Ｑ／
ｌ以下であり、良好な処理が可能でありｔ６
更に１本発明の方法では、処理水と活性汚泥に固液分離
を行なうための汚泥沈降槽を設置する必要がなく、ま７
ｔ、処理効率も一般の下水の活性汚泥処理に比べて約３
倍以上も向上することが明らかになつ７ｔ。The BOD volumetric load is about 4 to 5 times that of normal activated sludge treatment (BOD volumetric load 0.5 f/m/day), that is, B
OD 52.4 kg/m・Even after high-load treatment, the treated water f7) B OD5 is less than 5 m1j/l (
removal rate of 98% or more), OODMfI (average value) of 8.2
■//(removal rate 90%) and SS (average value) is 5! Q/
Furthermore, in the method of the present invention, there is no need to install a sludge settling tank for solid-liquid separation between treated water and activated sludge, and
t, and the treatment efficiency is about 3 times higher than that of activated sludge treatment for general sewage.
It became clear that the improvement was more than double that of 7t.
実施例２
第２図の実験装置の生物化学的反応槽（第１曝気槽２・
・・・・・１０１．Ｂ槽・・・・・・２０ｊ、！２８気
槽３・・・・・・１０１りに、製鉄所のコークス炉から
発生するガス廃液を生物化学的に処理している活性汚泥
処理装置の曝気槽より採取しｔ活性汚泥混合液（活性汚
泥濃度５ｏｏｏ〜７０００＃１９／Ａ’）２０ｊを入れ
１次にＢ槽に多孔性固定化担体 カセット１を一定の間
隔を保ってセットし、カセットの間で曝気を行つｔ、固
定化担体は実施例１と同様にして製造しｔものを使用し
九〇約１６時間後には活性汚泥が多孔性固定化担体の内
に入り込み。Example 2 The biochemical reaction tank (first aeration tank 2,
...101. Tank B...20j! 28 Air tank 3...101 Activated sludge mixed liquid (activated Put the sludge concentration 5ooo~7000 #19/A') 20j into tank B. Set the porous immobilization carrier cassettes 1 at a constant interval, and perform aeration between the cassettes. was produced in the same manner as in Example 1, and the activated sludge penetrated into the porous immobilization carrier after about 16 hours.
雨曝気槽２．３が透明になつ九。9. The rain aeration tank 2.3 becomes transparent.
そこで、第３表に性状を示すガス廃液（淡水により４倍
希釈）を処理時間が１６時間、１２時間。Therefore, the processing time for the gas waste liquid (4 times diluted with fresh water) whose properties are shown in Table 3 was 16 hours and 12 hours.
８時間、６時間、４時間、３時間となるように通水して
処理を行った。なお、空気曝気量は、＠気槽３（７）Ｏ
ＲＰが＋２００ ｍＶ ニナルヨうＫＯＲＰ制御！ｊｔ
５によりコントロールし友。The treatment was carried out by passing water for 8 hours, 6 hours, 4 hours, and 3 hours. In addition, the air aeration amount is @air tank 3 (7) O
RP is +200 mV Ninaruyo KORP control! jt
5 controls your friend.
このような方法により処理しｔ結果を第４表に示す。The results of processing using this method are shown in Table 4.
第３表 ガス廃液（４倍希釈）の化学的性状ＳＯＮ”−
：チオシア／イオン
Ｔ−ＯＮ”−：全シアンイオン
第４表 処理時間と処理水質との関係
ガス廃液を均一曝気型活性汚泥法により処理を行つ文場
合、処理時間は約８時間（汚泥返送率８０−１２０％）
で、ＣＯＤ容積負荷量は２．５〜３．５に９７ ｍ ５
・日が限界であり、これ以上００Ｄ負荷量’ｔ２＞ける
とガス廃液成分の分解不良、活性汚泥のノ々ルキング発
生等により処理水質の悪化を招く。Table 3 Chemical properties of gas waste liquid (4 times diluted) SON”-
:Thiosia/ion T-ON"-:Total cyanide Table 4 Relationship between treatment time and treated water quality When gas waste liquid is treated by the uniform aeration type activated sludge method, the treatment time is approximately 8 hours (sludge return rate 80-120%)
So, the COD volume load is 2.5 to 3.5 97 m 5
- Day is the limit, and if the 00D load 't2> is exceeded, the quality of the treated water will deteriorate due to poor decomposition of gas waste liquid components, nokking of activated sludge, etc.
しかし１本発明の方法は、ＣＯＤ容積負荷量を通常の約
３倍の高負荷処理を行っても処理水の０００が約１００
１１１り／ｌと良好である。ま７２．、活性汚泥が多孔
性固定化担体に固定化されているので高負荷処理を行っ
ても処理水に流出せず、処理水質の悪化を招かない。However, in the method of the present invention, even if the COD volumetric load is treated at a high load, which is about three times the normal amount, the treated water has a
It is good at 111 l/l. Ma72. Since the activated sludge is immobilized on a porous immobilization carrier, it will not flow into the treated water even when high-load treatment is performed, and the quality of the treated water will not deteriorate.
（発明の効果）
（１）本発明の方法は、下水の活性汚泥処理に多く用い
られている均一混合型に比べて、生物化学的反応槽内に
活性汚泥を均一に混合する必要がなく、単に下水に酸素
を溶解させるのみで良いので。(Effects of the Invention) (1) The method of the present invention does not require uniform mixing of activated sludge in the biochemical reaction tank, compared to the uniform mixing type that is often used for activated sludge treatment of sewage. Simply dissolving oxygen in sewage is sufficient.
従来の方法に比べて曝気用空気に必要な動力が少なくて
済む。Less power is required for aeration air than with conventional methods.
（２）多孔性固定化担体は活性汚泥を保持する機能が優
れているｔめ、処理水に活性汚泥がほとんど流出しない
ので、一般の活性汚泥処理に用いられている汚泥沈降槽
の省略化又は簡略化ができる。(2) Since the porous immobilization carrier has an excellent ability to retain activated sludge, almost no activated sludge flows into the treated water, so the sludge settling tank used in general activated sludge treatment can be omitted or Can be simplified.
（３）ＢＯＤ負荷量を一般の活性汚泥処理の約３倍かけ
て処理を行なっても処理水質が良好である。(3) The quality of the treated water is good even when the BOD load is applied approximately three times as much as in general activated sludge treatment.
従って、生物化学的反応ａｔ−かなり小型化することが
できる。Therefore, biochemical reactions at-can be significantly miniaturized.
（４）活性汚泥沈降槽の省略化又ｔｒｉ簡略化、さらに
は生物化学的反応槽の小型化が可能なので、下廃水処理
設備全体を著しくコンノ々クト化することができる。(4) Since the activated sludge sedimentation tank can be omitted or tri-simplified, and the biochemical reaction tank can be downsized, the entire sewage water treatment facility can be made significantly more interconnected.
（５）活性汚泥が多孔性固定化担体内に固定化されてい
るので、一般の均一混合型活性汚泥処理に発生しやすい
活性汚泥の／々ルキングが発生しないので処理が安定し
ており、ま几良好な処理ができる。(5) Since the activated sludge is immobilized within the porous immobilization carrier, there is no lumping of activated sludge that tends to occur in general homogeneous mixed activated sludge treatment, resulting in stable treatment and Good processing is possible.
第１図は本発明の実施に使用する多孔性固定化担体カセ
ットを一集暇セットし皮下廃水処理の生物化学処理装置
例を示す図、第２図は多孔性固定化担体カセットを一定
間隔をおいて設は比例を示す図である。
１−・・多孔性固定化担体カセット、２・・・第１曝気
槽、３・・・＠２曝気槽、４・・・ＯＲＰセンサー、５
・・・ｏａｐ制御襞ｔ！！、 ６・・・記碌計、７・
・・下廃水供給用ポンプ、８・・・下廃水調整タンク、
９・・・曝気用ブロアー、１０・・・曝気量調整用電磁
弁、１１・・・曝気用散気管、１２・・・処理水。
代理人 弁理士 秋 沢 政 光
他１名
第１図
第２図Figure 1 shows an example of a biochemical treatment device for subcutaneous wastewater treatment in which porous immobilized carrier cassettes used in the practice of the present invention are set at regular intervals, and Figure 2 shows porous immobilized carrier cassettes set at regular intervals. This is a diagram showing proportion. 1- Porous immobilization carrier cassette, 2... First aeration tank, 3...@2 aeration tank, 4... ORP sensor, 5
... oap control fold t! ! , 6... Recorded total, 7.
...Sewage water supply pump, 8...Sewage wastewater adjustment tank,
9... Blower for aeration, 10... Solenoid valve for adjusting the amount of aeration, 11... Diffuser pipe for aeration, 12... Treated water. Agent: Patent attorney Masamitsu Akizawa and one other person Figure 1 Figure 2
Claims (1)
ントを配合した配合物の水添混合物をスポンジ状の有機
高分子系樹脂に被覆して １５０℃以下で固化させて得られた三次元網目構造をも
つた固定化担体に下水、産業廃水の汚濁物を分解する微
生物を付着させ、これに酸素を溶存させた下水または産
業廃水を通水して処理することを特徴とする排水の固定
床型活性汚泥処理方法。(1) Obtained by coating a sponge-like organic polymer resin with a hydrogenated mixture of a blend of inorganic fine powder made from blast furnace granulated water and hydraulic cement and solidifying it at 150°C or below. Wastewater characterized by attaching microorganisms that decompose pollutants of sewage or industrial wastewater to an immobilized carrier having a three-dimensional network structure, and treating the sewage or industrial wastewater by passing the sewage or industrial wastewater with dissolved oxygen through it. fixed bed activated sludge treatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62122496A JPS63287596A (en) | 1987-05-21 | 1987-05-21 | Fixed-bed type activated-sludge treatment of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62122496A JPS63287596A (en) | 1987-05-21 | 1987-05-21 | Fixed-bed type activated-sludge treatment of waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63287596A true JPS63287596A (en) | 1988-11-24 |
Family
ID=14837281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62122496A Pending JPS63287596A (en) | 1987-05-21 | 1987-05-21 | Fixed-bed type activated-sludge treatment of waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63287596A (en) |
-
1987
- 1987-05-21 JP JP62122496A patent/JPS63287596A/en active Pending
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