JPH02207893A - Sewage treatment - Google Patents
Sewage treatmentInfo
- Publication number
- JPH02207893A JPH02207893A JP1028592A JP2859289A JPH02207893A JP H02207893 A JPH02207893 A JP H02207893A JP 1028592 A JP1028592 A JP 1028592A JP 2859289 A JP2859289 A JP 2859289A JP H02207893 A JPH02207893 A JP H02207893A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- wettability
- fluid state
- improve
- microorganisms
- 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 abstract description 6
- -1 fatty acid ester Chemical class 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 8
- 239000000194 fatty acid Substances 0.000 claims abstract description 8
- 229930195729 fatty acid Natural products 0.000 claims abstract description 8
- 244000005700 microbiome Species 0.000 claims abstract description 8
- 229920002545 silicone oil Polymers 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 17
- 239000002351 wastewater Substances 0.000 claims description 5
- 241000894007 species Species 0.000 claims 2
- 239000004129 EU approved improving agent Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000000593 degrading effect Effects 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 10
- 239000000969 carrier Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- BTFJIXJJCSYFAL-UHFFFAOYSA-N icosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCO BTFJIXJJCSYFAL-UHFFFAOYSA-N 0.000 description 2
- OYHQOLUKZRVURQ-HZJYTTRNSA-N linoleic acid group Chemical class C(CCCCCCC\C=C/C\C=C/CCCCC)(=O)O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BITHHVVYSMSWAG-KTKRTIGZSA-N (11Z)-icos-11-enoic acid Chemical class CCCCCCCC\C=C/CCCCCCCCCC(O)=O BITHHVVYSMSWAG-KTKRTIGZSA-N 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- RBNPOMFGQQGHHO-UWTATZPHSA-N D-glyceric acid Chemical class OC[C@@H](O)C(O)=O RBNPOMFGQQGHHO-UWTATZPHSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- PYVHTIWHNXTVPF-UHFFFAOYSA-N F.F.F.F.C=C Chemical compound F.F.F.F.C=C PYVHTIWHNXTVPF-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000000227 bioadhesive Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 150000002027 dodecanoic acid esters Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- VKOBVWXKNCXXDE-UHFFFAOYSA-N icosanoic acid Chemical class CCCCCCCCCCCCCCCCCCCC(O)=O VKOBVWXKNCXXDE-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical class CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 150000002888 oleic acid derivatives Chemical class 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 150000002943 palmitic acids Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical class CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
- WSWCOQWTEOXDQX-MQQKCMAXSA-N sorbic acid group Chemical class C(\C=C\C=C\C)(=O)O WSWCOQWTEOXDQX-MQQKCMAXSA-N 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000007704 transition Effects 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)
- Treatment Of Biological Wastes In General (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、し尿、産業廃水などの有機性汚水を生
物学的に好気的あるいは嫌気的に処理する方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for biologically aerobically or anaerobically treating organic wastewater such as sewage, human waste, and industrial wastewater.
（従来の技術）
有機性汚水を生物学的に好気的処理する方法は、大きく
二つに大別される。第１は活性汚泥法に代表される浮遊
汚泥法であり、第２は散水炉床法。(Prior Art) Methods for biologically aerobically treating organic wastewater can be broadly classified into two types. The first is the floating sludge method, typified by the activated sludge method, and the second is the sprinkler hearth method.
浸漬が床法等に代表される生物膜処理法である。Immersion is a biofilm treatment method typified by the bed method.
これらの違いは、前者が浮遊状態の微生物群によっで浄
化作用を発揮させるのに対し、後者は担体を用いて該担
体の表面に付着する生物膜を利用することにある。The difference between these is that the former uses a group of microorganisms in suspension to exert its purifying effect, whereas the latter uses a carrier and utilizes a biofilm attached to the surface of the carrier.
近年−生物膜処理法は、生物付着担体の開発に伴い様々
な方法が開発され、脚光をあびている技術である。なか
でも、担体を流動状態で用いるものは、生物膜処理法の
最大の欠点である担体の目詰まりを解決する方法として
注目を集めている。In recent years, biofilm treatment is a technology that has been in the spotlight as various methods have been developed along with the development of bioadhesive carriers. Among these, methods that use carriers in a fluid state are attracting attention as a method for solving carrier clogging, which is the biggest drawback of biofilm treatment methods.
しかしながら、微生物を付着させた担体を流動状態で用
いる従来の生物膜処理法では、処理開始時や長期間運転
を休止したあとなどでは、反応槽内の担体が水になじま
ず、比重１以上にもかかわらず、担体内部に保留される
気泡のために浮上してしまうことがあった。特に、担体
としてウレタンフオームなどを用いた場合のように、担
体自体の中に空間を有するものにおいては顕著であった
。However, in conventional biofilm treatment methods that use microorganism-attached carriers in a fluidized state, the carriers in the reaction tank do not absorb water and have a specific gravity of 1 or more at the start of treatment or after a long period of suspension of operation. However, there were cases where the carrier floated to the surface due to air bubbles retained inside the carrier. This was particularly noticeable when the carrier itself had a space, such as when urethane foam was used as the carrier.
担体が浮上したままであると、水中における十分な流動
状態が得られず、反応槽での処理能力が低下し、さらに
浮上した担体の一部が嫌気的になり、悪臭を発生させる
などの二次公害の問題も発生しかねなかった。If the carriers remain floating, sufficient fluidity in the water cannot be obtained, reducing the processing capacity of the reaction tank, and furthermore, some of the floating carriers may become anaerobic, causing unpleasant odors and other problems. Further pollution problems could have arisen.
本発明は、前記担体の浮上を防止し、反応槽内で理想的
な担体の流動状態を保ち、処理能力の低下や悪臭発生な
どの二次公害を防止することができる方法を提供しよう
とするものである。The present invention aims to provide a method that can prevent the carrier from floating, maintain an ideal fluid state of the carrier in the reaction tank, and prevent secondary pollution such as a decrease in processing capacity and the generation of bad odors. It is something.
本発明は、微生物を付着させた担体を流動状態にして汚
水を処理する方法において、高級アルコール、脂肪酸エ
ステル又はシリコン油を主成分とする担体ぬれ性改良剤
の１種もしくは２種以上を添加することを特徴とする汚
水処理方法である。The present invention provides a method for treating wastewater by making a carrier attached with microorganisms into a fluidized state, in which one or more carrier wettability improvers whose main components are higher alcohols, fatty acid esters, or silicone oil are added. This sewage treatment method is characterized by:
本発明の最も重要な点は、微生物を付着させた担体を流
動状態にして汚水を処理する場合に、担体表面の「ぬれ
性」を改良して担体の浮上を防止し、理想的な担体の流
動状態を得るように工夫したことである。The most important point of the present invention is that when treating wastewater by using a carrier with microorganisms attached in a fluid state, it is possible to improve the "wettability" of the carrier surface and prevent the carrier from floating, thereby creating an ideal carrier. This was devised to obtain a fluid state.
具体的には、担体ぬれ性改良剤を添加することによって
、担体表面の「ぬれ性」を改良し、担体に保留されてい
る気泡を放出させ、担体の流動状態を良好にすることで
ある。この担体ぬれ性改良剤としては、種々の実験の結
果、
■ 高級アルコール
Ｒ＋ ０ （ＲｓＯ）ｎＨ
ただし、Ｒ，ｊ高級アルコール
Ｒ１：ΦＣ＊Ｈ＊、■ＣｘＨ６，■ＣａＨ＊■ 脂肪酸
エステル
Ｒ２−Ｃ−０（ＲｓＯ）ｎｆｌ
ただし、Ｒ１：脂肪酸
Ｒ３：■ＣｔＨａ、■Ｃｓ１ｌｉ、■ＣＪｓ■ シリコ
ン油
を主成分とするものが効果的であり、これらは、１種類
でも効果的であるが、２種以上組み合わせた場合には相
乗効果が生じ、使用量が少なく、より効果的である。Specifically, by adding a carrier wettability improver, the "wettability" of the carrier surface is improved, air bubbles retained in the carrier are released, and the fluidity of the carrier is improved. As a result of various experiments, the carrier wettability improver is: ■ Higher alcohol R+ 0 (RsO) nH where R,j Higher alcohol R1: ΦC*H*, ■CxH6, ■CaH*■ Fatty acid ester R2-C -0(RsO)nfl However, R1: Fatty acid R3: ■CtHa, ■Cs1li, ■CJs■ Those whose main component is silicone oil are effective, and although one type of these is effective, two types When the above combinations are used, a synergistic effect occurs, the amount used is small, and it is more effective.
高級アルコールの例としては、エイコシルアルコール、
エイコモノール。ステアリルアルコール。Examples of higher alcohols include eicosyl alcohol,
Eikomonol. stearyl alcohol.
ツルビルアルコール、ラウリルアルコール、リルニルア
ルコール、リルイルアルコール等がある。Examples include turuvyl alcohol, lauryl alcohol, lilunyl alcohol, and lilyl alcohol.
脂肪酸エステルの例としては、オレイン酸エステル、ア
ラキン酸エステル、エイコセン酸エステル、グリセリン
酸エステル、ステアリン酸エステル、ソルビン酸エステ
ル、ラウリン酸エステル。Examples of fatty acid esters include oleic acid esters, arachic acid esters, eicosenoic acid esters, glyceric acid esters, stearic acid esters, sorbic acid esters, and lauric acid esters.
リノール酸エステル、リノール酸エステル、リシノール
酸エステル、パルチミン酸エステル等がある。There are linoleic acid esters, linoleic acid esters, ricinoleic acid esters, palmitic acid esters, etc.
シリコン油としては、有機基を持っジメチルシリコンオ
イルなどのオルガノポリシロキサンや、オルガノポリシ
ロキサンと疎水性シリカあるいは親木性シリカとの混合
物がある。Examples of silicone oils include organopolysiloxanes having organic groups such as dimethyl silicone oil, and mixtures of organopolysiloxanes and hydrophobic silica or wood-philic silica.
さらに、処理開始時から定常状態に達するまでの馴致期
間においては種汚泥（活性汚泥等）を添加することが行
われるが、担体ねれ性改良剤により理想的な担体の流動
状態が得られるために、従来では予期できないほどの短
時間で定常運転に達する。この種汚泥添加率は０．１−
１ｇ／Ｊ、好ましくは０．２〜０．６ｇ／ｌとする。Furthermore, seed sludge (activated sludge, etc.) is added during the acclimatization period from the start of treatment until a steady state is reached; In addition, steady state operation is achieved in a short time that could not previously be expected. This type of sludge addition rate is 0.1-
1 g/J, preferably 0.2 to 0.6 g/l.
本発明で流動化させる微生物付着用の担体としては、プ
ラスチック担体が好ましく、その材質は、ポリスチレン
、ポリ塩化ビニル、ポリエチレン。The carrier for attaching microorganisms to be fluidized in the present invention is preferably a plastic carrier, and the material thereof is polystyrene, polyvinyl chloride, or polyethylene.
ポリプロピレン、ポリウレタン、フェノール、ユリャ、
エポキシ、シリコン、ポリエステル、含水ポリエステル
、メラミン、ジアリルフタレートアクリル、スチロール
、ＡＢＳ、塩化ビニル、ポリカーボネート、ポリフェニ
レンオキサイド、ナイロン６、、ｉｌｌアセタール、ポ
リエチレンテレフタレート、四ふり化エチレンがよ（、
スポンジ（フオーム）、ビーズ等の形状で市販されてい
るものを利用できる。polypropylene, polyurethane, phenol, yurya,
Epoxy, silicone, polyester, hydrous polyester, melamine, diallylphthalate acrylic, styrene, ABS, vinyl chloride, polycarbonate, polyphenylene oxide, nylon 6, ill acetal, polyethylene terephthalate, ethylene tetrafluoride.
Commercially available products in the form of sponges (foam), beads, etc. can be used.
担体の形状は、立方体、直方体１円筒体２球体その他の
不定形でよく、特に限定されるものではなく、寸法は流
動性を考慮して、その−辺又は直径をｔ−１ｏｏ鶴、好
ましくは１０〜５０鶴とする。The shape of the carrier may be a cube, rectangular parallelepiped, 1 cylinder, 2 spheres, or other amorphous shapes, and is not particularly limited.The dimensions of the carrier are preferably t-10 mm, taking fluidity into consideration. 10 to 50 cranes.
担体ぬれ性改良剤の添加率は、１種類添加の場合は０．
５〜５ｇ／ｌ、好ましくは１〜４ｇ／ｌとし、２種以上
添加の場合は合計で０．２〜３ｇ／ｌ、好ましくは０．
４〜２ｇ／ｌとする０例えば、ポリエステルとシリコー
ン油を組み合わせて添加すると、単独の場合に比べて添
加率は半減し、経済的である。なお、処理中に何らかの
原因で担体が浮上した場合には、さらに適宜な量の担体
ぬれ性改良剤を追加して添加すればよい。The addition rate of the carrier wettability improver is 0.0 when one type is added.
The amount is 5 to 5 g/l, preferably 1 to 4 g/l, and when two or more types are added, the total amount is 0.2 to 3 g/l, preferably 0.
For example, when polyester and silicone oil are added in combination, the addition rate is halved compared to when they are added alone, which is economical. If the carrier floats up for some reason during the treatment, an appropriate amount of carrier wettability improver may be added.
団地下水を原水とし、径４００ｍｘ高２８５００の曝気
槽（３系列）によって、本発明、比較例１．比較例２の
実験をそれぞれ行った。それぞれ処理開始時の処理条件
を表１に示した０本発明での担体ぬれ性改良剤は、脂肪
酸エステルとしてオレイン酸エステルを主成分とするも
のと、シリコン油としてオルガノポリシロキシサンを主
成分とするものとを、２二８の割合で混合したものを使
用した。The present invention, Comparative Example 1. The experiment of Comparative Example 2 was conducted respectively. The treatment conditions at the start of each treatment are shown in Table 1. The carrier wettability improver of the present invention is one whose main component is oleic acid ester as fatty acid ester, and one whose main component is organopolysiloxane as silicone oil. A mixture of 2:2 and 8:1 was used.
以下余白
処理開始時には、担体に生物膜が付着していない、そこ
で、生物付着量の増加程度を調査することから、定常状
態への移行程度を判断することにした。At the start of the margin treatment, there was no biofilm attached to the carrier, so we decided to investigate the degree of increase in the amount of biofouling to determine the degree of transition to a steady state.
結果は第１図に示す通りであり、本発明では処理開始日
より担体はよく流動し、３日目には、はぼ定常状態に達
した。一方、比較例１でははじめの数日味流動状態が思
わしくないこともあったが、約ｌθ８目には本発明とほ
ぼ同様な状態になった。The results are as shown in FIG. 1. In the present invention, the carrier flowed well from the start of the treatment, and reached a steady state on the third day. On the other hand, in Comparative Example 1, although the fluidity state was unsatisfactory for the first few days, the state became almost the same as that of the present invention at about lθ8.
また、比較例２では良好に流動しはしめるまでに約２週
間を要し、その後も時々一部の担体が浮上するなどの問
題はあったが、約４０日後には本発明とほぼ同様になっ
た。In addition, in Comparative Example 2, it took about two weeks to get good fluidity, and even after that, there were problems such as some of the carriers occasionally floating up, but after about 40 days, it was almost the same as the present invention. became.
このように、本発明では穫めて短時間で定常状態に達す
ることは勿論のこと、種汚泥の添加率が、比較例１のわ
ずか４０％で十分となる０通常、種汚泥はタンクローリ
等で近くの活性汚泥施設より輸送するのが一般的であり
、その費用や作業量はばく大なものとなるが、本発明で
は種汚泥の量を少なくすることもできるため、極めて経
済的であ（発明の効果）
以上述べたように本発明によれば、次に列記するような
極めて顕著な効果を得ることができる。In this way, in the present invention, not only can a steady state be reached in a short time after harvesting, but also the addition rate of seed sludge is only 40% of that of Comparative Example 1. Generally, the activated sludge is transported from a nearby activated sludge facility, which increases the cost and workload, but the present invention can reduce the amount of seed sludge, making it extremely economical. (Effects) As described above, according to the present invention, extremely remarkable effects as listed below can be obtained.
■ 微生物を付着させた担体の流動状態を理想的にし、
もし何らかの原因で担体が浮上した場合でも、速やかに
良好な流動状態に戻すことができ、処理能力の低下、悪
臭発生などの二次公害の恐れがない。■ Make the fluidity of the carrier to which microorganisms are attached ideal,
Even if the carrier floats up for some reason, it can be quickly returned to a good fluid state, and there is no risk of secondary pollution such as a decrease in processing capacity or the generation of bad odors.
■ 処理開始時等の馴致期間においては、従来の種汚泥
添加率を低減でき、かつ短期間で定常運転に導くことが
できる。■ During the acclimatization period such as at the start of treatment, the conventional seed sludge addition rate can be reduced, and steady operation can be achieved in a short period of time.
第１図は、本発明と比較例における流動する担体への生
物付着量と経過日数との関係を示す線図である。FIG. 1 is a diagram showing the relationship between the amount of biofouling on a flowing carrier and the number of days elapsed in the present invention and a comparative example.
Claims (1)
処理する方法において、高級アルコール、脂肪酸エステ
ル又はシリコン油を主成分とする担体ぬれ性改良剤の１
種もしくは２種以上を添加することを特徴とする汚水処
理方法。(1) In a method of treating wastewater by making a carrier to which microorganisms are attached to a fluid state, a carrier wettability improver whose main component is higher alcohol, fatty acid ester, or silicone oil is used.
A sewage treatment method characterized by adding a species or two or more species.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1028592A JPH02207893A (en) | 1989-02-09 | 1989-02-09 | Sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1028592A JPH02207893A (en) | 1989-02-09 | 1989-02-09 | Sewage treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02207893A true JPH02207893A (en) | 1990-08-17 |
| JPH0455757B2 JPH0455757B2 (en) | 1992-09-04 |
Family
ID=12252866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1028592A Granted JPH02207893A (en) | 1989-02-09 | 1989-02-09 | Sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02207893A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009220079A (en) * | 2008-03-18 | 2009-10-01 | Inoac Corp | Water treatment carrier |
| JP2010119979A (en) * | 2008-11-21 | 2010-06-03 | Inoac Corp | Microorganism carrier for water treatment |
| CN102627373A (en) * | 2011-06-29 | 2012-08-08 | 兰州理工大学 | Micro-polluted water resource pollution treatment method |
-
1989
- 1989-02-09 JP JP1028592A patent/JPH02207893A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009220079A (en) * | 2008-03-18 | 2009-10-01 | Inoac Corp | Water treatment carrier |
| JP2010119979A (en) * | 2008-11-21 | 2010-06-03 | Inoac Corp | Microorganism carrier for water treatment |
| CN102627373A (en) * | 2011-06-29 | 2012-08-08 | 兰州理工大学 | Micro-polluted water resource pollution treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0455757B2 (en) | 1992-09-04 |
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