JPH0929285A - Advanced treatment method for wastewater and device therefor - Google Patents
Advanced treatment method for wastewater and device thereforInfo
- Publication number
- JPH0929285A JPH0929285A JP20672395A JP20672395A JPH0929285A JP H0929285 A JPH0929285 A JP H0929285A JP 20672395 A JP20672395 A JP 20672395A JP 20672395 A JP20672395 A JP 20672395A JP H0929285 A JPH0929285 A JP H0929285A
- Authority
- JP
- Japan
- Prior art keywords
- ozone
- wastewater
- treatment
- biofilm filtration
- waste water
- 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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000001914 filtration Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 230000002085 persistent effect Effects 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 32
- 230000000694 effects Effects 0.000 abstract description 6
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 239000000126 substance Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 238000005273 aeration Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- LFYXNXGVLGKVCJ-FBIMIBRVSA-N 2-methylisoborneol Chemical compound C1C[C@@]2(C)[C@](C)(O)C[C@@H]1C2(C)C LFYXNXGVLGKVCJ-FBIMIBRVSA-N 0.000 description 1
- GZSOSUNBTXMUFQ-NJGQXECBSA-N 5,7,3'-Trihydroxy-4'-methoxyflavone 7-O-rutinoside Natural products O(C[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](Oc2cc(O)c3C(=O)C=C(c4cc(O)c(OC)cc4)Oc3c2)O1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@H](C)O1 GZSOSUNBTXMUFQ-NJGQXECBSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GZSOSUNBTXMUFQ-YFAPSIMESA-N diosmin Chemical compound C1=C(O)C(OC)=CC=C1C(OC1=C2)=CC(=O)C1=C(O)C=C2O[C@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO[C@H]2[C@@H]([C@H](O)[C@@H](O)[C@H](C)O2)O)O1 GZSOSUNBTXMUFQ-YFAPSIMESA-N 0.000 description 1
- 229960004352 diosmin Drugs 0.000 description 1
- IGBKNLGEMMEWKD-UHFFFAOYSA-N diosmin Natural products COc1ccc(cc1)C2=C(O)C(=O)c3c(O)cc(OC4OC(COC5OC(C)C(O)C(O)C5O)C(O)C(O)C4O)cc3O2 IGBKNLGEMMEWKD-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- VUYDGVRIQRPHFX-UHFFFAOYSA-N hesperidin Natural products COc1cc(ccc1O)C2CC(=O)c3c(O)cc(OC4OC(COC5OC(O)C(O)C(O)C5O)C(O)C(O)C4O)cc3O2 VUYDGVRIQRPHFX-UHFFFAOYSA-N 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 239000002663 humin Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 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)
- Degasification And Air Bubble Elimination (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、排水の高度処理技
術に係り、特に、下水・し尿・工場廃水などの排水中に
含まれる生物難分解性ＣＯＤ成分を処理する高度処理技
術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an advanced treatment technology for wastewater, and more particularly to an advanced treatment technology for treating a biodegradable COD component contained in wastewater such as sewage, human waste, and factory wastewater.
【０００２】[0002]
【従来の技術】排水の高度処理方法としては、急速ろ過
法や生物膜ろ過法が広く採用されている。これらの中
で、生物膜ろ過法は急速ろ過法の改良によって生まれた
技術であり、微生物担体を充填した固定床に対して、排
水を下向流（又は上向流）で通水し、同時に空気を下部
から供給する。この操作によって、担体微生物により排
水中の溶解性物質を好気的に分解し、併せて固定床のろ
過作用により濁質成分を除去しようとするものである。
生物膜ろ過法や急速ろ過法は、活性汚泥法のような二次
処理プロセスの後段に付加されるもので、二次処理水中
に残留するＳＳ、ＢＯＤ、アンモニア性窒素等を除去す
るのに有効である。しかし、これらの方法では二次処理
水中に残留するＣＯＤ、色度成分などの除去率は低い。
この理由は、二次処理水中に残留するＣＯＤ成分の多く
が、生物分解性の低い物質（フミン、リグニンなど）で
あることによる。2. Description of the Related Art Rapid filtration and biofilm filtration are widely used as advanced treatment methods for wastewater. Among these, the biofilm filtration method is a technology created by improvement of the rapid filtration method, in which wastewater is passed in a downward flow (or upward flow) to a fixed bed packed with a microbial carrier, and at the same time. Air is supplied from the bottom. By this operation, the carrier microorganisms aerobically decompose the soluble substances in the wastewater, and at the same time, the suspended substances are removed by the filtration action of the fixed bed.
The biofilm filtration method and the rapid filtration method are added after the secondary treatment process such as the activated sludge method, and are effective in removing SS, BOD, ammonia nitrogen etc. remaining in the secondary treatment water. Is. However, with these methods, the removal rate of COD, chromaticity components, etc. remaining in the secondary treated water is low.
The reason for this is that most of the COD components remaining in the secondary treated water are substances with low biodegradability (humin, lignin, etc.).
【０００３】一方、強力な酸化剤であるオゾンは、排水
処理プロセスでは既に殺菌、脱色、微量有機物の酸化分
解などに使用されている。またオゾン処理には、生物分
解性の低いＣＯＤ成分の生分解性を向上する効果がある
ことが知られている。これは、オゾンの強力な酸化力に
よって化合物中の不飽和結合が飽和結合化する、あるい
は疎水性物質が親水性化されるためと考えられている。
オゾン処理と活性炭処理を組み合わせた方法（オゾン−
活性炭処理法）は、上水源の汚濁が進行した地域の浄水
場で普及しつつある高度処理プロセスである。これは水
道水の異臭味対策として活性炭処理が限界に達したため
に考案されたプロセスで、オゾン処理によって異臭味原
因物質である２−ＭＩＢ（メチルイソボルネオール）や
ジオスミンの７０〜８０％を酸化分解し、残りの２０〜
３０％を活性炭で吸着除去するものである。On the other hand, ozone, which is a strong oxidant, has already been used for sterilization, decolorization and oxidative decomposition of trace organic substances in the wastewater treatment process. It is known that ozone treatment has the effect of improving the biodegradability of COD components having low biodegradability. It is considered that this is because the strong oxidative power of ozone causes the unsaturated bond in the compound to be saturated, or the hydrophobic substance to become hydrophilic.
A method that combines ozone treatment and activated carbon treatment (ozone-
Activated carbon treatment method) is an advanced treatment process that is becoming popular in water treatment plants in areas where pollution of water sources has progressed. This is a process devised because the treatment of activated carbon has reached its limit as a measure against the off-flavor of tap water. Ozone treatment oxidatively decomposes 70 to 80% of 2-MIB (methylisoborneol) and diosmin, which are substances causing off-flavor. And the remaining 20 ~
30% is adsorbed and removed by activated carbon.
【０００４】[0004]
【発明が解決しようとする課題】発明者らは、これまで
にオゾン＋生物膜ろ過法の技術開発を行っていたが、オ
ゾンを処理水に対して１０〜２０ｍｇ／リットル以上の
高濃度注入しても、最終処理水（生物膜ろ過法出口水）
のＣＯＤはあまり低下しなかった。但し、オゾンによる
生分解性の改善効果は確認され、オゾン１０ｍｇ／リッ
トルに対してオゾン溶解工程出口水（オゾン水）のＢＯ
Ｄは約３ｍｇ／リットル増加した。しかし、この増加し
たＢＯＤを後段の生物膜ろ過法で除去することはできな
かった。この原因を検討した結果、生物膜ろ過法のＢＯ
Ｄ処理能力が低下していることが明らかになった。さら
に、生物膜ろ過法の能力低下の原因は、オゾン処理水中
に残留するオゾンにより、生物膜の活性が阻害を受けた
可能性が高いものと推察された。そこで、本発明は、オ
ゾン処理と生物膜ろ過処理を組み合せた処理において、
生物膜の活性を維持し、処理水のＣＯＤをより低下さ
せ、生物膜ろ過工程のＢＯＤ除去能力を高く保つことが
できる排水の高度処理方法と装置を提供することを課題
とする。The inventors have been developing the technology of ozone + biofilm filtration method until now, but ozone was injected into the treated water at a high concentration of 10 to 20 mg / liter or more. Even the final treated water (outlet water from the biofilm filtration method)
Of COD did not decrease so much. However, the effect of improving the biodegradability by ozone was confirmed, and the BO of the outlet water (ozone water) at the ozone dissolution step was compared with 10 mg / l of ozone.
D increased by about 3 mg / liter. However, this increased BOD could not be removed by the latter biofilm filtration method. As a result of investigating the cause of this, BO of the biofilm filtration method
It became clear that the D processing capacity was lowered. Furthermore, it was speculated that the cause of the decline in the performance of the biofilm filtration method was probably that the activity of the biofilm was inhibited by the ozone remaining in the ozone-treated water. Therefore, the present invention, in the combined treatment of ozone treatment and biofilm filtration treatment,
An object of the present invention is to provide a method and an apparatus for advanced treatment of wastewater, which can maintain the activity of the biofilm, further reduce the COD of the treated water, and keep the BOD removal capacity in the biofilm filtration step high.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、排水の難分解性ＣＯＤ成分をオゾン処理
と生物膜ろ過処理で除去する排水の高度処理方法におい
て、該排水をオゾン処理し、オゾン処理した排水からオ
ゾンを除去して生物膜ろ過処理することとしたものであ
る。また、本発明では、排水の難分解性ＣＯＤ成分をオ
ゾン処理工程と生物処理工程とで除去する排水の高度処
理装置において、オゾン処理工程と生物膜ろ過工程との
間に脱オゾン工程を連結したものである。上記におい
て、オゾン除去は、気泡塔又は充填塔で行い、各塔の液
滞留時間は５〜３０分とするのがよい。In order to solve the above-mentioned problems, the present invention provides a method for advanced treatment of wastewater in which the persistent COD component of the wastewater is removed by ozone treatment and biofilm filtration treatment. The wastewater is treated and ozone-treated to remove ozone and then subjected to a biofilm filtration treatment. Further, in the present invention, in the advanced treatment equipment for wastewater, which removes the hardly decomposable COD component of wastewater in the ozone treatment step and the biological treatment step, the deozone step is connected between the ozone treatment step and the biofilm filtration step. It is a thing. In the above, ozone removal is performed in a bubble column or a packed column, and the liquid retention time in each column is preferably 5 to 30 minutes.
【０００６】[0006]
【発明の実施の形態】本発明は、図１に示すように、オ
ゾン処理工程１、脱オゾン工程２及び生物膜ろ過工程３
よりなる。本発明における脱オゾン工程２は、単にオゾ
ン処理水を一定時間貯留するものでも良いが、これは時
間を要する方法であることから、気泡塔もしくは充填塔
が適切である。この時の塔内液滞留時間としては、５分
以上、好ましくは１０〜３０分が適当である。脱オゾン
工程２の気泡塔（あるいは充填塔）では下部から空気６
が導入され、上部からはオゾン処理水が通水される。こ
れにより、オゾンはエアーストリッピングされるととも
に、溶解塔壁面あるいは充填材表面に生成したスライム
により消費される。BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, as shown in FIG. 1, an ozone treatment step 1, a deozone step 2 and a biofilm filtration step 3 are carried out.
Consists of. The deozonization step 2 in the present invention may simply store the ozone-treated water for a certain period of time, but since this is a time-consuming method, a bubble column or a packed column is suitable. The liquid retention time in the tower at this time is 5 minutes or more, preferably 10 to 30 minutes. In the bubble column (or packed column) of the deozone process 2, air 6
Is introduced, and ozone-treated water is passed from above. As a result, ozone is air stripped and consumed by slime generated on the wall surface of the melting tower or the surface of the packing material.
【０００７】脱オゾン工程の残留オゾンは反応時間とと
もに低下するが、我々の調査及び実験によれば、オゾン
処理水の残留オゾンを０．２ｍｇ／リットル以下にする
のが、後段の生物膜ろ過工程の能力を維持する上で好ま
しい。そのためには少なくとも、気泡塔（充填塔）にお
ける滞留時間は５分以上が必要であった（図２参照）。
また、脱オゾン工程の滞留時間は、長いほど残留オゾン
は低下するが、後段の生物膜ろ過工程の滞留時間は、通
常１０〜３０分であることから、脱オゾン工程に３０分
以上の滞留時間を持たせることは、装置構成上アンバラ
ンスである。Although the residual ozone in the deozone process decreases with the reaction time, according to our research and experiments, the residual ozone in the ozone-treated water is set to 0.2 mg / liter or less in the subsequent biofilm filtration process. It is preferable for maintaining the ability of. For that purpose, at least the residence time in the bubble column (packed column) needs to be 5 minutes or more (see FIG. 2).
Further, the longer the residence time of the deozone process, the lower the residual ozone, but since the residence time of the subsequent biofilm filtration process is usually 10 to 30 minutes, the residence time of 30 minutes or more in the deozone process. It is unbalanced in terms of device configuration.
【０００８】なお、オゾン溶解工程の後段に貯留槽を設
ける事例はオゾン＋活性炭処理プロセス等で見受けられ
るが、この主な目的は後段の活性炭のオゾンによる劣化
を防ぐことにある。本発明の脱オゾン工程は、後段の微
生物の活性低下を防止するためのものであり、オゾン＋
活性炭処理プロセスとは設置目的が異なるものである。
本発明によれば、二次処理水中の難分解性ＣＯＤは、そ
の生分解性がオゾン注入率にほぼ比例して向上する。そ
して脱オゾン工程によって、オゾン処理水中の残留オゾ
ンが０．２ｍｇ／リットル以下に低下する。さらに生物
膜ろ過工程により、生分解性の向上分に相当するＣＯＤ
が生物学的に除去される。その結果、最終処理水のＣＯ
Ｄは従来のオゾン＋生物膜ろ過法よりも大幅に低減され
る。[0008] A case where a storage tank is provided in the latter stage of the ozone dissolving step is found in an ozone + activated carbon treatment process, etc., but the main purpose is to prevent deterioration of activated carbon in the latter stage due to ozone. The deozonizing step of the present invention is for preventing a decrease in the activity of microorganisms in the latter stage.
The purpose of installation is different from the activated carbon treatment process.
According to the present invention, the biodegradability of persistent COD in the secondary treated water is improved almost in proportion to the ozone injection rate. Then, the ozone removal process reduces the residual ozone in the ozone-treated water to 0.2 mg / liter or less. In addition, COD equivalent to the amount of improved biodegradability due to the biofilm filtration process
Are biologically removed. As a result, the final treated water CO
D is significantly reduced over conventional ozone + biofilm filtration methods.
【０００９】[0009]
【実施例】以下、本発明を実施例により具体的に説明す
るが、本発明はこれに限定されるものではない。 実施例１ 本発明の実施例として、都市下水二次処理水の高度処理
に採用した例を示す。 （ａ）原水 都市下水二次処理水： ＣＯＤMn：１０〜１５ｍｇ／リットル、ＢＯＤ：５〜１
２ｍｇ／リットル、ＮＨ4 −Ｎ：３〜１０ｍｇ／リット
ル、 処理水量：６０ｍ3 ／日 （ｂ）処理フロー 図１に示す。EXAMPLES The present invention will be described below in more detail with reference to examples, but the present invention is not limited to these examples. Example 1 As an example of the present invention, an example adopted in advanced treatment of municipal wastewater secondary treated water is shown. (A) Raw water Urban sewage secondary treated water: COD Mn : 10 to 15 mg / liter, BOD: 5-1
2 mg / liter, NH 4 —N: 3 to 10 mg / liter, treated water amount: 60 m 3 / day (b) Treatment flow Shown in FIG.
【００１０】（ｃ）各塔の要項 ・オゾン溶解塔：内径５００ｍｍ×高６０００ｍｍ×１
塔 有効容積：８５０リットル 液滞留時間：２０分 オゾン注入率：処理水あたり１５〜２０ｍｇＯ3 ／リッ
トル ・脱オゾン塔（気泡塔）：内径３５０ｍｍ×高６０００
ｍｍ 有効容積：３５０リットル 液滞留時間：８．４分 通気速度：０．０２Ｎｍ／分(C) Essentials of each tower ・ Ozone dissolution tower: inner diameter 500 mm × height 6000 mm × 1
Tower effective volume: 850 liters Liquid retention time: 20 minutes Ozone injection rate: 15 to 20 mgO 3 / liter per treated water Deozone tower (bubble column): Inner diameter 350 mm x height 6000
mm Effective volume: 350 liters Liquid retention time: 8.4 minutes Aeration rate: 0.02 Nm / minute
【００１１】 ・生物膜ろ過塔：内径８００ｍｍ×高５６００ｍｍ×１
塔 ろ材：粒状多孔体（粒径２ｍｍ）を２ｍ積層 ろ過速度：１２０ｍ／ｄ、ＳＶ＝２．５（ｈ-1） 通気速度：０．１０Ｎｍ／分 （ｄ）運転結果 図３に処理水のＣＯＤMnの変化を示す。運転開始から６
０日間は脱オゾン工程をバイパスして運転し（従来法フ
ロー）、６１日目から１５０日までは脱オゾン塔を経由
して運転を行った（本発明フロー）。表１に各実験期間
の処理成績を示す。Biofilm filtration tower: inner diameter 800 mm x height 5600 mm x 1
Tower Filter medium: 2 m of granular porous material (particle size 2 mm) laminated Filtration speed: 120 m / d, SV = 2.5 (h -1 ) Aeration speed: 0.10 Nm / min (d) Operation results Figure 3 shows treated water The change of COD Mn is shown. 6 from the start of operation
The deozonization process was bypassed for 0 days (conventional method flow), and the operation was performed from the 61st to 150th days via the deozonation tower (invention flow). Table 1 shows the treatment results during each experimental period.
【００１２】[0012]
【表１】 このように、本発明により処理水のＣＯＤを従来法より
も大幅に低減可能であった。[Table 1] As described above, according to the present invention, the COD of the treated water can be significantly reduced as compared with the conventional method.
【００１３】[0013]
【発明の効果】本発明により、処理水ＣＯＤを従来のオ
ゾン＋生物膜ろ過法よりも大幅に低下することが可能で
ある。本発明により、放流域へのＣＯＤ負荷量を削減す
ることが可能になり、公共水域の水質向上に貢献できる
ものと確信する。According to the present invention, the treated water COD can be significantly reduced as compared with the conventional ozone + biofilm filtration method. It is believed that the present invention makes it possible to reduce the amount of COD load on the discharge area and contribute to improving the water quality of public water areas.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の排水の高度処理装置のフロー工程図。FIG. 1 is a flow process diagram of an advanced wastewater treatment apparatus of the present invention.
【図２】脱オゾン工程の滞留時間と残留オゾン量の関係
を示すグラフ。FIG. 2 is a graph showing the relationship between the residence time in the deozone process and the amount of residual ozone.
【図３】処理水の経過日数によるＣＯＤMnの変化を示す
グラフ。FIG. 3 is a graph showing changes in COD Mn depending on the elapsed days of treated water.
１：オゾン処理工程、２：脱オゾン工程、３：生物膜ろ
過工程、４：流入水、５：高度処理水、６：空気、７：
排気1: Ozone treatment process, 2: Deozone process, 3: Biofilm filtration process, 4: Influent water, 5: Highly treated water, 6: Air, 7:
exhaust
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０２Ｆ 1/78 ＺＡＢ Ｃ０２Ｆ 1/78 ＺＡＢ 3/02 ＺＡＢ 3/02 ＺＡＢＡ (72)発明者 勝倉 昇 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内 (72)発明者 山田 武彦 東京都大田区羽田旭町11番１号 株式会社 荏原製作所内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location C02F 1/78 ZAB C02F 1/78 ZAB 3/02 ZAB 3/02 ZABA (72) Inventor Noboru Katsukura 11-11 Haneda-Asahi-cho, Ota-ku, Tokyo Inside EBARA CORPORATION (72) Inventor Takehiko Yamada 11-11 Haneda-Asahi-cho, Ota-ku, Tokyo Inside EBARA CORPORATION
Claims (3)
と生物膜ろ過処理で除去する排水の高度処理方法におい
て、該排水をオゾン処理し、オゾン処理した排水からオ
ゾンを除去して生物膜ろ過処理することを特徴とする排
水の高度処理方法。1. A method of advanced treatment of wastewater, wherein persistent COD components of wastewater are removed by ozone treatment and biofilm filtration treatment, the wastewater is treated with ozone, and ozone is removed from the ozone-treated wastewater to remove biofilm filtration. Advanced treatment method for wastewater, which is characterized by treating.
工程と生物膜ろ過処理工程とで除去する排水の高度処理
装置において、オゾン処理工程と生物膜ろ過工程の間に
脱オゾン工程を連結したことを特徴とする排水の高度処
理装置。2. An advanced ozone treatment device for wastewater, which removes persistent COD components of wastewater by an ozone treatment step and a biofilm filtration step, wherein a deozonation step is connected between the ozone treatment step and the biofilm filtration step. An advanced treatment device for wastewater, which is characterized in that
行い、各塔の液滞留時間は５〜３０分であることを特徴
とする請求項１記載の排水の高度処理方法。3. The advanced wastewater treatment method according to claim 1, wherein the ozone removal is performed in a bubble column or a packed column, and a liquid retention time in each column is 5 to 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20672395A JPH0929285A (en) | 1995-07-21 | 1995-07-21 | Advanced treatment method for wastewater and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20672395A JPH0929285A (en) | 1995-07-21 | 1995-07-21 | Advanced treatment method for wastewater and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0929285A true JPH0929285A (en) | 1997-02-04 |
Family
ID=16528048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20672395A Pending JPH0929285A (en) | 1995-07-21 | 1995-07-21 | Advanced treatment method for wastewater and device therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0929285A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004261698A (en) * | 2003-02-28 | 2004-09-24 | Ebara Corp | Cleaning method for seawater and brackish water and apparatus therefor |
| KR101360020B1 (en) * | 2013-03-15 | 2014-02-12 | 재단법인 한국계면공학연구소 | Preprocessing of membrane filtration and system using the same |
| WO2016103985A1 (en) * | 2014-12-26 | 2016-06-30 | ユニ・チャーム株式会社 | Method for recycling used absorbent article |
| JP2016123973A (en) * | 2014-12-26 | 2016-07-11 | ユニ・チャーム株式会社 | Recycling method of used absorbent articles |
-
1995
- 1995-07-21 JP JP20672395A patent/JPH0929285A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004261698A (en) * | 2003-02-28 | 2004-09-24 | Ebara Corp | Cleaning method for seawater and brackish water and apparatus therefor |
| KR101360020B1 (en) * | 2013-03-15 | 2014-02-12 | 재단법인 한국계면공학연구소 | Preprocessing of membrane filtration and system using the same |
| WO2016103985A1 (en) * | 2014-12-26 | 2016-06-30 | ユニ・チャーム株式会社 | Method for recycling used absorbent article |
| JP2016123973A (en) * | 2014-12-26 | 2016-07-11 | ユニ・チャーム株式会社 | Recycling method of used absorbent articles |
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