JPH0455757B2 - - Google Patents
Info
- Publication number
- JPH0455757B2 JPH0455757B2 JP1028592A JP2859289A JPH0455757B2 JP H0455757 B2 JPH0455757 B2 JP H0455757B2 JP 1028592 A JP1028592 A JP 1028592A JP 2859289 A JP2859289 A JP 2859289A JP H0455757 B2 JPH0455757 B2 JP H0455757B2
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- acid esters
- resin
- wettability
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 15
- -1 fatty acid esters Chemical class 0.000 claims description 8
- 244000005700 microbiome Species 0.000 claims description 7
- 229920002545 silicone oil Polymers 0.000 claims description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 5
- 238000004065 wastewater treatment Methods 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims 1
- 239000000969 carrier Substances 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000002148 esters 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
- 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
- 239000000725 suspension Substances 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
- MEIRRNXMZYDVDW-MQQKCMAXSA-N (2E,4E)-2,4-hexadien-1-ol Chemical compound C\C=C\C=C\CO MEIRRNXMZYDVDW-MQQKCMAXSA-N 0.000 description 1
- JXNPEDYJTDQORS-HZJYTTRNSA-N (9Z,12Z)-octadecadien-1-ol Chemical compound CCCCC\C=C/C\C=C/CCCCCCCCO JXNPEDYJTDQORS-HZJYTTRNSA-N 0.000 description 1
- IKYKEVDKGZYRMQ-PDBXOOCHSA-N (9Z,12Z,15Z)-octadecatrien-1-ol Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCCO IKYKEVDKGZYRMQ-PDBXOOCHSA-N 0.000 description 1
- ACJQRYKUUGFHPV-FMQUCBEESA-N (e)-icos-1-en-1-ol Chemical compound CCCCCCCCCCCCCCCCCC\C=C\O ACJQRYKUUGFHPV-FMQUCBEESA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 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
- LVGKNOAMLMIIKO-UHFFFAOYSA-N Elaidinsaeure-aethylester Natural products CCCCCCCCC=CCCCCCCCC(=O)OCC LVGKNOAMLMIIKO-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229930182556 Polyacetal Natural products 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
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical class CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000000227 bioadhesive Substances 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- LVGKNOAMLMIIKO-QXMHVHEDSA-N ethyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC LVGKNOAMLMIIKO-QXMHVHEDSA-N 0.000 description 1
- 230000005484 gravity Effects 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
- 239000010842 industrial wastewater Substances 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N linoleic acid group Chemical class C(CCCCCCC\C=C/C\C=C/CCCCC)(=O)O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- JXNPEDYJTDQORS-UHFFFAOYSA-N linoleyl alcohol Natural products CCCCCC=CCC=CCCCCCCCCO JXNPEDYJTDQORS-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 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
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 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
- 229920000647 polyepoxide 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
- 229920006324 polyoxymethylene Polymers 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
- 238000000746 purification Methods 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
- 239000010865 sewage Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 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
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 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)
Description
〔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。
〔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は散水床
法，浸漬床法等に代表される生物膜処理法であ
る。これらの違いは、前者が浮遊状態の微生物群
によつて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。
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。
〔発明が解決しようとする課題〕
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
てしまうことがあつた。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つ
た。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
発生しかねなかつた。
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。
〔課題を解決するための手段〕
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。
〔作用〕
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。
具体的には、担体ぬれ性改良剤を添加すること
によつて、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、
高級アルコールを主成分とするもの、脂肪酸エ
ステルを主成分とするもの、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。
高級アルコールを主成分とする担体ぬれ性改良
剤の例としては、エイコシルアルコール，エイコ
セノール，ステアリルアルコール，ソルビルアル
コール，ウラリルアルコール，リノレニルアルコ
ール，リノレイルアルコール等がある。
脂肪酸エステルを主成分とする担体ぬれ性改良
剤の例としては、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，ウラリン酸エステル，リノレン酸エス
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。
シリコン油を主成分とする担体ぬれ性改良剤の
例としては、有機基を持つ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水性シリ
カとの混合物がある。
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、担体ぬれ性改良剤によ
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／、好ま
しくは0.2〜0.6ｇ／とする。
本発明で流動化させる微生物付着用の担体とし
ては、プラスチツク担体が好ましく、その材質
は、ポリスチレン，ポリ塩化ビニル，ポリエチレ
ン，ポリプロピレン，ポリウレタン，フエノール
樹脂，ユリヤ樹脂，エポキシ樹脂，シリコン樹
脂，ポリエステル，含水ポリエステル，メラミン
樹脂，ジアリルフタレート樹脂，アクリル樹脂，
スチロール樹脂，ABS樹脂，塩化ビニル樹脂，
ポリカーボネート，ポリフエニレンオキサイド，
ナイロン６，ポリアセタール，ポリエチレンテレ
フタレート，四ふつ化エチレン樹脂がよく、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。
担体の形状は、立方体，直方体，円筒体，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、その一辺又は直
径を１〜100mm、好ましくは10〜50mmとする。
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／、好ましくは１〜４ｇ／と
し、２種以上添加の場合は合計で0.2〜３ｇ／、
好ましくは0.4〜２ｇ／とする。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。
〔実施例〕
実施例 １
団地下水を原水とし、径400mm×高2850mmの曝
気槽（３系列）によつて、本発明、比較例１、比
較例２の実験をそれぞれ行つた。それぞれ処理開
始時の処理条件を表１に示した。本発明での担体
ぬれ性改良剤は、肪肪酸エステルを主成分とする
ものとしてオレイン酸エチルエステルと、シリコ
ン油を主成分とするものとしてオルガノポリシロ
キシサンとを、２：８の割合で混合したものを使
用した。
[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. [Prior Art] Methods for biologically aerobically treating organic wastewater can be broadly classified into two types. The first is a floating sludge method, typified by the activated sludge method, and the second is a biofilm treatment method, typified by the sprinkled bed method, soaked bed method, and the like. The difference between these is that the former uses a group of microorganisms in suspension to exert its purification effect, whereas the latter uses a carrier and utilizes a biofilm attached to the surface of the carrier. 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. [Problem to be solved by the invention] However, in the conventional biofilm treatment method that uses carriers with microorganisms attached in a fluid state, the carriers in the reaction tank tend to deplete at the start of treatment or after a long period of suspension of operation. It was not compatible with water, and even though it had a specific gravity of 1 or more, it sometimes 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. 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. 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. [Means for Solving the Problems] The present invention provides a method for treating wastewater by making a carrier to which microorganisms are attached into a fluidized state, using a carrier wettability improver containing higher alcohol, fatty acid ester, or silicone oil as a main component. This is a wastewater treatment method characterized by adding one or more kinds. [Function] The most important point of the present invention is that when treating wastewater by making the carrier with microorganisms attached into a fluid state, it improves the "wettability" of the carrier surface and prevents the carrier from floating, making it ideal. This was devised to obtain a fluid state of the carrier. 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. be. As a result of various experiments, it has been found that effective carrier wettability improvers include those containing higher alcohol as the main component, fatty acid ester as the main component, and silicone oil as the main component. Although one type is effective, when two or more types are combined, a synergistic effect occurs, the amount used is small, and it is more effective. Examples of carrier wettability improvers containing higher alcohol as a main component include eicosyl alcohol, eicosenol, stearyl alcohol, sorbyl alcohol, uralyl alcohol, linolenyl alcohol, and linoleyl alcohol. Examples of carrier wettability improvers containing fatty acid esters as main components include oleic acid esters, arachidic acid esters, eicosenoic acid esters, glyceric acid esters, stearic acid esters, sorbic acid esters, uraric acid esters, linolenic acid esters, and linoleic acid esters. There are acid esters, ricinoleic acid esters, palmitic acid esters, etc. Examples of carrier wettability improvers containing silicone oil as a main component include organopolysiloxanes such as dimethyl silicone oil having organic groups, and mixtures of organopolysiloxanes and hydrophobic or hydrophilic silica. Furthermore, seed sludge (activated sludge, etc.) is added during the acclimatization period from the start of treatment until a steady state is reached; , steady state operation is achieved in a short time that could not previously be expected. The addition rate of this type of sludge is 0.1 to 1 g/, preferably 0.2 to 0.6 g/. As the carrier for attaching microorganisms to be fluidized in the present invention, a plastic carrier is preferable, and the materials thereof include polystyrene, polyvinyl chloride, polyethylene, polypropylene, polyurethane, phenolic resin, urea resin, epoxy resin, silicone resin, polyester, water-containing resin, etc. Polyester, melamine resin, diallyl phthalate resin, acrylic resin,
Styrene resin, ABS resin, vinyl chloride resin,
polycarbonate, polyphenylene oxide,
Nylon 6, polyacetal, polyethylene terephthalate, and tetrafluoroethylene resins are preferred, and those commercially available in the form of sponges (foam), beads, etc. can be used. The shape of the carrier may be a cube, a rectangular parallelepiped, a cylinder, a sphere, or any other amorphous shape, and is not particularly limited.The size of the carrier is 1 to 100 mm on one side or in diameter, preferably 10 to 100 mm, taking fluidity into consideration. The length shall be 50mm. The addition rate of the carrier wettability improver is 0.5 to 5 g/, preferably 1 to 4 g/in the case of adding one type, and 0.2 to 3 g/in total in the case of adding two or more types.
Preferably it is 0.4-2g/. 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. [Examples] Example 1 Experiments of the present invention, Comparative Example 1, and Comparative Example 2 were conducted using aeration tanks (3 series) each having a diameter of 400 mm and a height of 2850 mm, using underground water as raw water. Table 1 shows the treatment conditions at the start of each treatment. The carrier wettability improver in the present invention contains oleic acid ethyl ester, which is mainly composed of a fatty acid ester, and organopolysiloxane, which is mainly composed of silicone oil, in a ratio of 2:8. I used a mixture.
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。
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。
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。
As described above, according to the present invention, extremely remarkable effects as listed below can be obtained. The fluidity of the carrier with microorganisms attached to it is ideal, and even if the carrier floats for some reason, it can be quickly returned to a good fluidity, which prevents secondary pollution such as a decrease in processing capacity and the generation of bad odors. There is no fear. 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)
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。1. A method for treating wastewater by making a carrier attached with microorganisms into a fluidized state, characterized by the addition of one or more carrier wettability improvers whose main components are higher alcohols, fatty acid esters, or silicone oil. wastewater treatment method.
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 JPH02207893A (en) | 1990-08-17 |
| JPH0455757B2 true 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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4914855B2 (en) * | 2008-03-18 | 2012-04-11 | 株式会社イノアックコーポレーション | Water treatment carrier |
| JP5284057B2 (en) * | 2008-11-21 | 2013-09-11 | 株式会社イノアックコーポレーション | Method for producing microbial 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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02207893A (en) | 1990-08-17 |
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