JP2758353B2 - Water treatment equipment for high load - Google Patents
Water treatment equipment for high loadInfo
- Publication number
- JP2758353B2 JP2758353B2 JP5349314A JP34931493A JP2758353B2 JP 2758353 B2 JP2758353 B2 JP 2758353B2 JP 5349314 A JP5349314 A JP 5349314A JP 34931493 A JP34931493 A JP 34931493A JP 2758353 B2 JP2758353 B2 JP 2758353B2
- Authority
- JP
- Japan
- Prior art keywords
- block
- filled
- water treatment
- treatment apparatus
- anaerobic
- 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
- 238000011282 treatment Methods 0.000 title claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 22
- 239000002689 soil Substances 0.000 claims description 13
- 239000003463 adsorbent Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 244000005700 microbiome Species 0.000 claims description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 6
- 150000004676 glycans Chemical class 0.000 claims description 5
- 229920001282 polysaccharide Polymers 0.000 claims description 5
- 239000005017 polysaccharide Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 230000032770 biofilm formation Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000002351 wastewater Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 244000144972 livestock Species 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 1
- 240000000599 Lentinula edodes Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- -1 specifically Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000002916 wood waste Substances 0.000 description 1
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水処理装置に関し、特
に例えば畜産排水のように負荷の高い排水の処理に適応
できる水処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment apparatus and, more particularly, to a water treatment apparatus which can be applied to the treatment of wastewater having a high load such as livestock wastewater.
【０００２】[0002]
【従来の技術】排水処理については、排水の種類や性状
に応じた多種多様な技術が既に知られている。しかし、
こと畜産排水についてみると、種々の試みはなされてい
るものの、畜産排水に特有な負荷程度や畜産分野に特有
な立地や経済性等の条件が関係し、未だこれといった技
術がないのが現状である。2. Description of the Related Art Regarding wastewater treatment, various techniques according to the type and properties of wastewater are already known. But,
Regarding livestock wastewater, various attempts have been made.However, due to the specific load level of livestock wastewater and the location and economics specific to the livestock sector, there is no technology at this time. is there.
【０００３】[0003]
【発明が解決しようとする課題】従って、本発明の目的
は、畜産排水におけるような条件を持つ排水の高度な処
理を可能とする水処理装置の提供にある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a water treatment apparatus capable of performing advanced treatment of wastewater having conditions similar to those of livestock wastewater.
【０００４】[0004]
【課題を解決するための手段】本発明による水処理装置
は、それぞれ異なる条件の生物学的処理ブロックを連続
的に設けてなるもので、微生物が定着している土壌を貯
留しておく貯留部を最上流のブロックに接続して設け、
この貯留部から最上流のブロックに土壌を供給するよう
にしてなっている。SUMMARY OF THE INVENTION A water treatment apparatus according to the present invention is provided with biological treatment blocks having different conditions continuously, and a storage section for storing soil on which microorganisms are established. Is connected to the most upstream block,
Soil is supplied from this storage section to the most upstream block.
【０００５】この水処理装置は、土壌の特性、つまり生
物学的処理に有用な微生物を多種多様に含み、また入手
が容易であり、しかも定量供給などの取扱いが簡単であ
るという特性を利用して常に新鮮な微生物を各生物学的
処理ブロックに補給するようにしているので、高負荷の
排水に対しても生物学的処理を効率的に機能させること
ができる。この結果、例えばＢＯＤが数百〜千数百ｐｐ
ｍといった高い負荷を持つ畜産排水に対しても数〜数十
ｐｐｍ程度のＢＯＤとするような高度な処理を施すこと
ができる。[0005] This water treatment apparatus takes advantage of the characteristics of soil, that is, the characteristics that it contains a wide variety of microorganisms useful for biological treatment, is easily available, and is easy to handle such as quantitative supply. As a result, fresh microorganisms are always supplied to each biological treatment block, so that the biological treatment can function efficiently even for high-load wastewater. As a result, for example, BOD is several hundred to several hundreds of pp.
m can be subjected to advanced treatment to produce a BOD of about several to several tens ppm even for livestock wastewater having a high load such as m.
【０００６】このような水処理装置に用いる土壌には、
例えば水田土壌のように嫌気性菌を多く含む土壌が好ま
しい。また土壌の貯留部を沈殿ブロックにおける悪臭の
除去にも兼用するようにすると、より合理的な設計とな
る。即ち、貯留部を沈殿ブロックの排気路の途中に設け
ると共に、そこに貯留させる土壌に例えば籾殻の炭化物
であるモミガラクンタンのような脱臭力の大きい材料を
混ぜ合わせ、このモミガラクンタン混合の土壌により沈
殿ブロックの悪臭を除去するようにする。[0006] The soil used in such a water treatment apparatus includes:
For example, a soil containing a large amount of anaerobic bacteria such as paddy soil is preferable. Further, if the storage part of the soil is used also for removing the offensive odor in the sedimentation block, the design becomes more rational. That is, the storage part is provided in the middle of the exhaust path of the sedimentation block, and the soil to be stored therein is mixed with a material having a large deodorizing power, such as fir galacton, which is carbide of rice hulls. Try to remove the bad smell of the block.
【０００７】またこのような水処理装置の生物学的処理
ブロックは、上流から順に、腐敗処理用の沈殿ブロッ
ク、生物膜形成用のろ材を充填して嫌気条件で処理する
第１嫌気条件ブロック、多孔質材に多糖類を付着させて
形成したろ材を充填して好気条件で処理する第１好気条
件ブロック、細菌の資化物を充填した資化物層を設ける
と共にアンモニア態窒素の吸着が可能な吸着剤を充填し
た吸着剤層を資化物層に連続状態で設けて嫌気条件で処
理する第２嫌気条件ブロック、及び多孔質材に多糖類を
付着させて形成したろ材を充填して好気条件で処理する
第２好気条件ブロックとして形成するのが好ましい。The biological treatment block of such a water treatment apparatus includes, in order from the upstream, a sedimentation block for septic treatment, a first anaerobic condition block for filling with a filter material for biofilm formation and treating under anaerobic conditions; The first aerobic condition block in which a porous material is filled with a filter medium formed by adhering a polysaccharide and treated under aerobic conditions. An assimilate layer filled with assimilable bacteria is provided and ammonia nitrogen can be adsorbed. A second anaerobic condition block in which an adsorbent layer filled with a novel adsorbent is provided in a continuous state on the material layer and treated under anaerobic conditions, and a filter material formed by attaching a polysaccharide to a porous material is filled and aerobic. It is preferably formed as a second aerobic condition block that is processed under conditions.
【０００８】このような構成における各ブロックは以下
のように機能する。即ち、沈殿ブロックにおいては、大
きめの浮遊物の沈殿と腐敗処理が行なわれ、第１嫌気条
件ブロックにおいては、高負荷条件に対しＢＯＤ成分な
どの分解処理能力の高い嫌気性菌による生物膜での処理
が行なわれる。また第１好気条件ブロックにおいては、
ろ材に定着した好気性菌によりＢＯＤ成分などの高い効
率での分解処理がなされると共に十分な溶存酸素が供給
され、この溶存酸素により処理対象水中の窒素分が十分
に硝酸態に変えられる。それらから第２嫌気条件ブロッ
クにおいて脱窒処理がなされる。この脱窒処理は、特願
平４−２９６５３３号として先に提案されている脱窒方
法によるもので、水中の硝酸態窒素を脱窒菌により窒素
ガスとして除去するだけの従来の方法とは異なり、被吸
着性の小さい硝酸態窒素を被吸着性の高いアンモニア態
窒素に変換し、このアンモニア態窒素を吸着剤により吸
着して除去するプロセスを取り入れた方法であり、併存
する複数種類の生物学的処理を同時進行的に利用できる
結果、比較的簡単な設備構造で高い脱窒処理を行なうこ
とができるという特徴がある。そして最後に第２好気条
件ブロックにおいて第１好気条件ブロックと同様の処理
がなされ、以上の各処理の連続的組み合わせが上記の土
壌による微生物の供給と相まって、高負荷の排水のより
高度な処理が可能となる。Each block in such a configuration functions as follows. That is, in the sedimentation block, large suspended matter is settled and putrefaction treatment is performed, and in the first anaerobic condition block, biodegradation by an anaerobic bacterium having a high decomposition treatment ability such as a BOD component under a high load condition is performed. Processing is performed. In the first aerobic condition block,
The aerobic bacteria fixed on the filter medium decompose the BOD component and the like with high efficiency and supply sufficient dissolved oxygen, and the dissolved oxygen sufficiently converts the nitrogen content in the water to be treated into a nitrate state. From them, a denitrification treatment is performed in the second anaerobic condition block. This denitrification treatment is based on the denitrification method previously proposed in Japanese Patent Application No. 4-296533, and is different from the conventional method of simply removing nitrate nitrogen in water as nitrogen gas by denitrifying bacteria. This method incorporates a process that converts nitrate nitrogen with low adsorptivity into ammonium nitrogen with high adsorptivity and then removes this ammonia nitrogen by adsorption with an adsorbent. As a result of the simultaneous use of the treatment, there is a feature that a high denitrification treatment can be performed with a relatively simple facility structure. And finally, in the second aerobic condition block, the same treatment as in the first aerobic condition block is performed, and the continuous combination of the above treatments is combined with the above-mentioned supply of microorganisms by the soil, so that the higher load wastewater is more advanced. Processing becomes possible.
【０００９】[0009]
【実施例】以下、本発明の一実施例を説明する。この実
施例における水処理装置は、養豚場のし尿排水の処理試
験用として設計された例で、図１に示すように、それぞ
れ独立的に設けた第１〜第７のタンクＴ1 〜Ｔ 7を通水
管Ｐにより互いに通水的に接続して形成されている。An embodiment of the present invention will be described below. The water treatment apparatus in this embodiment is an example designed for a treatment test of human wastewater from a pig farm, and as shown in FIG. 1, first to seventh tanks T 1 to T 7 provided independently. Water pipes P are formed so as to be connected to each other in a water-permeable manner.
【００１０】第１タンクＴ1 は、沈殿ブロック用で、大
きめの浮遊物の沈殿と腐敗処理を行なえるようにされて
いる。またこの第１タンクＴ1 の上部には貯留部Ｓが設
けられている。この貯留部Ｓには固形粒化させた水田土
壌にモミガラクンタンを混ぜ合わせた混成物が貯留され
ており、この混成物が第１タンクＴ1 への処理対象水の
流入に伴う振動などにより適度の割合で第１タンクＴ1
内に落下するようにされている。またこの貯留部Ｓは、
第１タンクＴ1 内で発生するガスの排気通路としても兼
用されており、その貯留物の脱臭力により排気の脱臭に
も機能する。The first tank T 1 is for a sedimentation block, and is capable of performing sedimentation and spoilage treatment of a large floating substance. The reservoir S is provided in an upper portion of the first tank T 1. This is the reservoir S and hybrids which were combined chaff Kung Tan paddy soil was solid granulation is stored, this hybrid moderate due to vibration caused by the influx of water to be treated to the first tank T 1 The first tank T 1 at a rate of
It is made to fall into. This storage section S
Which is also used also as an exhaust passage of the gas generated in the first tank T within 1 also functions to deodorize the exhaust by deodorizing force of the depot.
【００１１】第２タンクＴ2 は、第１嫌気条件ブロック
用で、嫌気性菌を主体とした生物膜による処理のために
嫌気条件にして生物膜用のろ材が充填されている。The second tank T 2 is for the first anaerobic condition block, and is filled with a biofilm filter medium under anaerobic conditions for treatment with a biofilm mainly composed of anaerobic bacteria.
【００１２】第３タンクＴ3 は、第１好気条件ブロック
用で、多孔質材に多糖類を付着させて形成したろ材、具
体的にはキトサンを付着させた木炭が充填され、この木
炭に定着する微生物により好気条件下での処理を行なう
ようにされている。The third tank T 3 is used for the first aerobic condition block, and is filled with a filter material formed by adhering a polysaccharide to a porous material, specifically, charcoal having chitosan attached thereto. Treatment under aerobic conditions is carried out by the microorganisms that settle.
【００１３】第４、第５の両タンクＴ4 、Ｔ5 は、第２
嫌気条件ブロック用で、処理対象水に溶存している窒素
と燐の除去に機能する。そのために、両タンクＴ4 、Ｔ
5 を一つのユニットとし、その内部に、細菌の資化物、
具体的には椎茸のほだ木やバーク堆肥のような木質廃材
などを充填した第１資化物層、燐用の吸着剤を充填した
第１吸着剤層、前記と同様の資化物を充填した第２資化
物層、及びアンモニア態窒素の吸着が可能な吸着剤を充
填した第２吸着剤層を処理対象水の流下方向で順に積層
してある。The fourth and fifth tanks T 4 and T 5 are connected to the second tank T 4 and T 5 .
It is for anaerobic condition block and functions to remove nitrogen and phosphorus dissolved in the water to be treated. For that purpose, both tanks T 4 , T
5 as one unit, inside which bacterial assimilation,
Specifically, a first material layer filled with wood waste such as shiitake mushroom trees and bark compost, a first adsorbent layer filled with an adsorbent for phosphorus, and a material similar to the above were filled. A second material layer and a second adsorbent layer filled with an adsorbent capable of adsorbing ammonia nitrogen are sequentially stacked in the flowing direction of the water to be treated.
【００１４】この両タンクＴ4 、Ｔ5 による第２嫌気条
件ブロックにおける脱窒のメカニズムは以下の通りであ
る。即ち、高度な嫌気性条件を与える資化物層において
生じる３種類の過程、具体的には硝酸還元能を有する細
菌の生物活動に基づく還元と純化学的な還元による硝酸
態窒素のアンモニア態窒素への変換、及び脱窒菌による
硝酸態窒素の窒素ガスへの変換を生じ、アンモニア態窒
素は吸着剤層で吸着除去され、窒素ガスは空中に放出さ
れる。尚、燐については微生物の作用を必要とせず、そ
のまま第１吸着剤層の吸着剤による吸着で除去される。The mechanism of denitrification in the second anaerobic condition block by the two tanks T 4 and T 5 is as follows. In other words, three types of processes that occur in the assimilate layer under highly anaerobic conditions, specifically, reduction of nitrate nitrogen to ammonia nitrogen by reduction based on biological activity of bacteria having nitrate reduction ability and pure chemical reduction And nitrate nitrogen is converted into nitrogen gas by the denitrifying bacteria, ammonia nitrogen is adsorbed and removed by the adsorbent layer, and nitrogen gas is released into the air. It should be noted that the phosphorus does not require the action of microorganisms and is removed as it is by the adsorption of the first adsorbent layer with the adsorbent.
【００１５】第６タンクＴ6 は、第２好気条件ブロック
用で、第３タンクＴ3 とほぼ同様とされている。また、
第７タンクＴ7 は、主に脱色などを目的とし、その内部
にはモミガラクンタンと木炭が交互に積層されている。The sixth tank T 6 is for the second aerobic condition block and is substantially the same as the third tank T 3 . Also,
Seventh tank T 7 mainly decolorized and purposes, on its inside chaff Kun Tan and charcoal are alternately laminated.
【００１６】[0016]
【発明の効果】本発明による水処装置は、以上説明した
ように、土壌の特性を利用して生物学的処理のための微
生物を常に更新できるようにしているので、高負荷の排
水に対しても生物学的処理を効率的に機能させることが
でき、例えば畜産排水などの高度な処理を可能とする。As described above, the water treatment apparatus according to the present invention can always renew microorganisms for biological treatment by utilizing the characteristics of soil, so that it can be used for high-load wastewater. However, biological treatment can function efficiently, and for example, advanced treatment of livestock wastewater and the like can be performed.
【図１】本発明による水処理装置の構成図。FIG. 1 is a configuration diagram of a water treatment apparatus according to the present invention.
Ｓ 貯留部 Ｔ1 第１タンク（沈殿ブロック） Ｔ2 第２タンク（第１嫌気条件ブロック） Ｔ3 第３タンク（第１好気条件ブロック） Ｔ4 第４タンク（第２嫌気条件ブロック） Ｔ5 第５タンク（第２嫌気条件ブロック） Ｔ6 第６タンク（第２好気条件ブロック） Ｔ7 第７タンクS Storage unit T 1 First tank (settling block) T 2 Second tank (first anaerobic condition block) T 3 Third tank (first aerobic condition block) T 4 Fourth tank (second anaerobic condition block) T 5 Fifth tank (2nd anaerobic condition block) T 6 6th tank (2nd aerobic condition block) T 7 7th tank
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C02F 3/00 C02F 3/30──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) C02F 3/00 C02F 3/30
Claims (2)
ックを連続的に設けてなる水処理装置において、微生物
が定着している土壌を貯留しておく貯留部を最上流のブ
ロックに接続された排気路の途中に設け、この貯留部か
ら最上流のブロックに土壌を供給すると共に、この貯留
部を通して排気を行うようにしたことを特徴とする高負
荷対応の水処理装置。1. A water treatment apparatus comprising biological treatment blocks provided continuously under different conditions, wherein a storage section for storing soil on which microorganisms are established is connected to an exhaust block connected to an uppermost block. A high-load water treatment apparatus, which is provided in the middle of a road, supplies soil to the most upstream block from the storage section, and exhausts air through the storage section.
に、腐敗処理用の沈殿ブロック、生物膜形成用のろ材を
充填して嫌気条件で処理する第１嫌気条件ブロック、多
孔質材に多糖類を付着させて形成したろ材を充填すると
共に好気条件とした第１好気条件ブロック、細菌の資化
物を充填した資化物層を設けると共にアンモニア態窒素
の吸着が可能な吸着剤を充填した吸着剤層を資化物層に
連続状態で設け、嫌気条件とした第２嫌気条件ブロッ
ク、及び多孔質材に多糖類を付着させて形成したろ材を
充填すると共に好気条件とした第２好気条件ブロックと
されている請求項１に記載の高負荷対応の水処理装置。2. The biological treatment block includes, in order from the upstream, a sedimentation block for decay treatment, a first anaerobic condition block filled with a filter material for biofilm formation and treated under anaerobic conditions, and a polysaccharide as a porous material. A first aerobic condition block filled with a filter medium formed by adhering with water and an aerobic condition, an adsorbent layer filled with an adsorbent capable of adsorbing ammonia nitrogen and providing an assimilant layer filled with assimilable bacteria A second anaerobic condition block in which the agent layer is provided continuously in the assimilate layer and the anaerobic condition is set, and a second aerobic condition in which the filter material formed by attaching the polysaccharide to the porous material is filled and the aerobic condition is set 2. The water treatment apparatus according to claim 1, wherein the water treatment apparatus is a block.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5349314A JP2758353B2 (en) | 1993-12-28 | 1993-12-28 | Water treatment equipment for high load |
| BR9404876A BR9404876A (en) | 1993-06-16 | 1994-05-31 | Water treatment process and apparatus for carrying out the same and water treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5349314A JP2758353B2 (en) | 1993-12-28 | 1993-12-28 | Water treatment equipment for high load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07185587A JPH07185587A (en) | 1995-07-25 |
| JP2758353B2 true JP2758353B2 (en) | 1998-05-28 |
Family
ID=18402938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5349314A Expired - Lifetime JP2758353B2 (en) | 1993-06-16 | 1993-12-28 | Water treatment equipment for high load |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2758353B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04367797A (en) * | 1991-06-17 | 1992-12-21 | Meidensha Corp | Deoxidation and apparatus therefor |
-
1993
- 1993-12-28 JP JP5349314A patent/JP2758353B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07185587A (en) | 1995-07-25 |
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