JP2000288580A - Waste water treatment apparatus - Google Patents
Waste water treatment apparatusInfo
- Publication number
- JP2000288580A JP2000288580A JP11103799A JP10379999A JP2000288580A JP 2000288580 A JP2000288580 A JP 2000288580A JP 11103799 A JP11103799 A JP 11103799A JP 10379999 A JP10379999 A JP 10379999A JP 2000288580 A JP2000288580 A JP 2000288580A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- aeration box
- chambers
- box
- main body
- 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
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 11
- 238000005273 aeration Methods 0.000 claims abstract description 44
- 238000005192 partition Methods 0.000 claims abstract description 18
- 239000010865 sewage Substances 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 18
- 239000003925 fat Substances 0.000 claims description 15
- 244000005700 microbiome Species 0.000 claims description 10
- 241000233866 Fungi Species 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 235000014593 oils and fats Nutrition 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- QKEYIYSLARKMSJ-UHFFFAOYSA-N 1-benzyl-3-(dimethylamino)-2,2-dimethyl-3,4-dihydronaphthalene-1,7-diol;hydrobromide Chemical compound Br.CC1(C)C(N(C)C)CC2=CC=C(O)C=C2C1(O)CC1=CC=CC=C1 QKEYIYSLARKMSJ-UHFFFAOYSA-N 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Treatment Of Biological Wastes In General (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は油脂分を含んだ汚水
の流入する廃水処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment apparatus into which wastewater containing oils and fats flows.
【０００２】[0002]
【従来の技術】飲食店などの厨房から排水される汚水中
には高濃度の油脂分を含有するものとなっているが、こ
れが処理装置として使用されるグリーストラップは槽内
へ経時的に油脂分を浮遊させ、これを定期的に上方から
蓋を持上げて浮遊する油脂分を容器へ汲み取ることが行
われている。2. Description of the Related Art Sewage drained from kitchens such as restaurants contains high-concentration oils and fats, and the grease trap used as a processing device is used to treat oils and fats into a tank over time. It is practiced to float the oil and periodically lift the lid from above to pump the floating oil and fat into a container.
【０００３】[0003]
【発明が解決しようとする課題】前者の定時的に上方か
ら蓋を持ち上げ、槽内の浮遊油脂分を汲み取ることは大
変面倒であり、忘れたりすると公害問題となるのであ
り、これに対し後者の微生物処理は手間のかからないも
のとなっているが、過剰な汚水流入などによっては微生
物が流失したりして適正な繁殖が阻害され、効率の良い
浄化作用の得られるものとなっていないのが現状であ
る。It is very troublesome to raise the lid from above at regular intervals and pump up the floating oils and fats in the tank, and if it is forgotten, it becomes a pollution problem. Although microbial treatment is a hassle-free process, excessive sewage inflow can cause microbes to be washed away, preventing proper reproduction and preventing efficient purification. It is.
【０００４】[0004]
【課題を解決するための手段】本発明は後者の微生物を
使用した装置の改良に係るものであって、その特徴とす
るところは、汚水流入槽本体内に仕切壁を立設し、複数
の室に区画すると共に、各室は槽底で相互に連通する状
態となさしめ、且つ区画された室の少なくとも１つには
漏斗状をなし、且つ底面部に透孔を穿設した曝気箱を槽
底の一定高さ上方位置で槽内壁面との間に一定の間隙が
あるように取付けしめ、これにより槽本体の槽底部から
廃水処理液の油脂分が上記間隙内を通って曝気箱内へ流
入するようなさしめ、また曝気箱内には油脂類の分解処
理微生物や菌類等の繁殖するものとなした構成とする。
このさい、槽底側から浮上して曝気箱内へ流入する油脂
分の効率的な促進を図るために、油脂分の流入する上記
間隙下方に上向きの空気吹出管を配設すると良く、また
上記曝気箱の箱底と槽底間に椀体を上向きに配設し、曝
気箱及び椀体の槽底からの高さ位置が適宜変えられるよ
うにしたり、また曝気槽には攪拌機や空気吹出管を配設
したりする。以下、本発明実施の一例を図面に基づいて
説明する。SUMMARY OF THE INVENTION The present invention relates to the improvement of the latter device using microorganisms, and the feature of the present invention is that a partition wall is provided upright in a sewage inflow tank main body and a plurality of partitions are provided. The chambers are divided into chambers, and the chambers communicate with each other at the bottom of the tank. At least one of the divided chambers has a funnel shape, and an aeration box with a perforated hole formed in the bottom portion. The tank is mounted so that there is a certain gap between it and the inner wall of the tank at a certain height above the tank bottom, so that the grease of the wastewater treatment liquid passes through the gap from the tank bottom of the tank body into the aeration box. And the inside of the aeration box is adapted to propagate microorganisms and fungi decomposed by decomposing oils and fats.
At this time, in order to efficiently promote the oil and fat that floats from the bottom of the tank and flows into the aeration box, it is preferable to dispose an upward air blowing pipe below the gap into which the oil and fat flows. A bowl is placed upward between the box bottom of the aeration box and the tank bottom so that the height position of the aeration box and the bowl from the tank bottom can be changed as appropriate. Or arrange them. Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
【０００５】[0005]
【発明の実施の形態】図１は本発明装置の縦断正面図、
図２は蓋板を取除いた平面図である。１は廃水処理装置
の槽本体、２は該槽内の対向する壁面間へ立設状態に取
付けしめた仕切壁であって、該仕切壁２により槽本体内
を複数の室（図示例ではＡ，Ｂ，Ｃ，Ｄ）に区画してな
る。このさい、室Ａ，Ｂ，Ｃ，Ｄの各室は各仕切壁下端
が槽底との間で一定の隙間Ｈがあることにより相互に連
通する状態となされている。ｋは堰板である。FIG. 1 is a longitudinal sectional front view of a device according to the present invention.
FIG. 2 is a plan view with the cover plate removed. Reference numeral 1 denotes a tank body of the wastewater treatment apparatus, and 2 denotes a partition wall mounted upright between opposing wall surfaces in the tank. The partition wall 2 divides the inside of the tank body into a plurality of chambers (A in the illustrated example). , B, C, D). At this time, each of the chambers A, B, C, and D is in a state in which the lower ends of the partition walls have a constant gap H between the bottom of the partition wall and the bottom of the tank, so that they communicate with each other. k is a weir plate.
【０００６】３は汚水流入管、４は該管の下方へ配設し
た夾雑物や荒ゴミなどの阻集籠である。５は室Ｂ及びＣ
に配設した曝気箱であって、図１及び図２に見られる通
り四角錐の漏斗状をなし、且つ底面部には透孔６が穿設
してある。四隅に設けた鍔片であって、各鍔片に対し垂
直な高さ方向へ適当長さのネジボルト８をナット９を使
用して止着させてなる。Reference numeral 3 denotes a sewage inflow pipe, and reference numeral 4 denotes a collecting basket disposed below the pipe for foreign substances and garbage. 5 is rooms B and C
The aeration box is provided with a rectangular pyramid funnel shape as shown in FIGS. 1 and 2, and a through hole 6 is formed in the bottom surface. The flange pieces provided at the four corners are formed by fastening screw bolts 8 of an appropriate length in the height direction perpendicular to the respective flange pieces using nuts 9.
【０００７】１０は仕切壁２，２上を跨ぐように取付け
てなる架橋板であって、上記ネジボルト８の上端を該架
橋板１０に対し同じくナット９を使用して止着すること
により、曝気箱５を槽底上の適宜必要な一定高さに吊下
げ状に取付けるようになすのであり、このさい曝気箱の
上周縁と槽本体の壁面及び仕切壁との間には一定の間隙
Ｗが形成されるものとなされている。Reference numeral 10 denotes a bridging plate which is attached so as to straddle the partition walls 2, 2. The upper end of the screw bolt 8 is fastened to the bridging plate 10 by using a nut 9, so that aeration is performed. The box 5 is mounted so as to be suspended at a required constant height on the bottom of the tank. In this case, a certain gap W is formed between the upper peripheral edge of the aeration box and the wall surface and the partition wall of the tank body. It is to be formed.
【０００８】１１はエアーポンプであって、これの運転
によるエアーはパイプによって室Ｂ，Ｃの槽底中央箇所
１１ａや上記間隙Ｗの下方箇所１１ｂへ導いて噴出させ
るようになしてあり、これにより槽底から浮上する油脂
分の上昇を促進させるようになし、上記間隙Ｗから油脂
分が効率良く曝気箱内へ流入するように補助作用を行わ
しめるのである。Reference numeral 11 denotes an air pump, and the air generated by the operation of the pump is guided by a pipe to a central portion 11a of the bottom of the chambers B and C and a lower portion 11b of the gap W to be ejected. The lifting of the oil and fat floating from the bottom of the tank is promoted, and the auxiliary action is performed so that the oil and fat flows efficiently from the gap W into the aeration box.
【０００９】１２は曝気箱５の中央部内へ設けてある攪
拌機であって、上記により曝気箱５内へ流入する油脂分
を適時攪拌するようになすのであり、このさい曝気槽内
には油脂分の分解微生物や菌類を定期的に投入させる。Reference numeral 12 denotes a stirrer provided in the central portion of the aeration box 5 for appropriately stirring the oil and fat flowing into the aeration box 5 as described above. Decompose microorganisms and fungi at regular intervals.
【００１０】１３は曝気箱の箱底と槽底間に配設してな
る椀体であって、図示例では箱底外からネジ棒１４を垂
設状態に取付け、これを介して椀体をナット１５止めす
るものとなし、且つ両者間の間隙ｓがナット１５の止着
位置で変えられるようになっている。Reference numeral 13 denotes a bowl disposed between the box bottom and the tank bottom of the aeration box. In the illustrated example, a screw rod 14 is attached vertically from outside the box bottom, and the bowl is connected to a nut 15 through this. The gap s between them is changed at the position where the nut 15 is fixed.
【００１１】上記実施例に於ける図面では上記構成の曝
気箱を槽本体内の室Ｃにも設けて、同様の作用が行われ
るようなすのであり、このように複数の室を設けて曝気
槽を幾つか設けたりすることは設置面積の大きさに応じ
て適宜に設計され、効果的な油脂分の分解処理が行われ
る上で著効を奏するものとなる。なお、１６は排出用ト
ラップ管である。In the drawings of the above-described embodiment, the aeration box having the above-described structure is provided also in the chamber C in the tank main body to perform the same operation. Is appropriately designed in accordance with the size of the installation area, and has a remarkable effect upon effective decomposition treatment of fats and oils. Reference numeral 16 denotes a discharge trap tube.
【００１２】本発明に係る上記構成の曝気箱５は少なく
とも１箇を必要とするものであり、且つ容積は任意の大
きさに設計することができるが、通常１００ｌ〜１ｔｏ
ｎ程度のものとなされる。なお、油脂分の分解微生物と
してはバクテリア、酵母菌などであり、且つ好適な繁殖
を可能とするために組紐類が配設されるものとなしても
良い。The aeration box 5 having the above-described structure according to the present invention requires at least one aeration box, and its volume can be designed to an arbitrary size.
n. Bacteria, yeasts, and the like are used as the microorganisms that decompose the oils and fats, and braids may be provided to enable suitable propagation.
【００１３】次に作用について説明すると、汚水流入管
３から流入した汚水は室Ａの阻集籠４により夾雑物や荒
ゴミなどが除かれ、仕切壁２の下を潜って室Ｂに到り、
汚水中に含まれる油脂分１７が上方へ向って浮上して行
くものとなるのであり、図示例の如く区画した室Ｃに於
いても同様の状態となる。Next, the operation will be described. The sewage flowing from the sewage inflow pipe 3 is filtered by the collecting basket 4 of the chamber A to remove impurities and rough trash, and then dives below the partition wall 2 to reach the chamber B.
The oils and fats 17 contained in the sewage float upward and are in the same state in the compartment C as shown in the illustrated example.
【００１４】而して、油脂分１７は曝気箱５の底裏部を
這うように上昇し、槽内壁面や仕切壁面との間隙Ｗを通
過して曝気箱５の上部周縁からオーバーフローして箱内
へ流入する。このさい、槽底上の一定高さ位置に配設し
た空気噴出管１１ａ，１１ｂなどから少量の外気が噴出
されるようにすることにより、上記油脂分１７の浮上が
効率良く行われるものとなるのである。The grease 17 rises so as to crawl on the bottom and back of the aeration box 5, passes through the gap W between the inner wall surface of the tank and the partition wall surface, overflows from the upper peripheral edge of the aeration box 5, and becomes a box. Flows into the interior. At this time, by allowing a small amount of outside air to be ejected from the air ejection pipes 11a and 11b disposed at a certain height position on the tank bottom, the floating of the oils and fats 17 can be performed efficiently. It is.
【００１５】斯くして、間隙Ｗを通って曝気箱５内へ送
り込まれる油脂分は該箱内で繁殖する微生物菌類によっ
て分解処理されるものとなる。ところで、曝気箱５内で
は攪拌機１２を適宜作動させることにより沈降油脂分の
攪拌が行われるものとなって、効率良く分解処理が進行
するものとなる。Thus, the fats and oils sent into the aeration box 5 through the gap W are decomposed by the microorganisms that propagate in the box. By the way, in the aeration box 5, the settling oil and fat is stirred by appropriately operating the stirrer 12, so that the decomposition process proceeds efficiently.
【００１６】このさい、攪拌される油脂分１７の一部は
透孔６を通って箱底から流出するが、椀体１３と衝突し
て間隙ｓ内を上昇することにより曝気箱５内へ戻る循環
流を形成させ、槽内を浮遊中の油脂分に対する分解微生
物による影響の補助作用が行われるようになすのであ
る。At this time, a part of the oil or fat 17 to be stirred flows out of the box bottom through the through hole 6, but collides with the bowl 13 and rises in the gap s to return to the inside of the aeration box 5. A flow is formed to assist the effect of the decomposing microorganisms on the oil and fat floating in the tank.
【００１７】なお、上記した攪拌機１２に代えて曝気箱
５内へ空気噴出管や循環ポンプ手段を配設し、同様の作
用効果が得られるようにすることができる。また、これ
らを併用使用することも差支えない。It should be noted that, instead of the agitator 12 described above, an air ejection pipe or a circulating pump means can be provided in the aeration box 5 so that the same operation and effect can be obtained. These may be used in combination.
【００１８】[0018]
【発明の効果】本発明は以上の通り構成するものであっ
て、曝気箱を特殊な構造で槽内へ配置することにより、
効率良く油脂分を曝気箱内へ取込み、且つ微生物菌類に
よる分解処理の行われるものとなるのであり、設備費や
運転コストの低減化に寄与するものとなる。The present invention is configured as described above, and by arranging an aeration box in a tank with a special structure,
The oils and fats are efficiently taken into the aeration box, and the decomposition treatment by the microorganisms is performed, thereby contributing to reduction of equipment costs and operation costs.
【図１】本発明装置の縦断面図である。FIG. 1 is a longitudinal sectional view of the device of the present invention.
【図２】同上の蓋を取除いた平面図である。FIG. 2 is a plan view with the lid removed.
１ 槽本体 ２ 仕切壁 ３ 汚水流入管 ４ 阻集籠 ５ 曝気箱 ８ ネジボルト １０ 架橋板 １１ 空気噴出管 １２ 攪拌機 １３ 椀体 １６ 排出用トラップ管 １７ 油脂分 DESCRIPTION OF SYMBOLS 1 Tank main body 2 Partition wall 3 Sewage inflow pipe 4 Obstruction basket 5 Aeration box 8 Screw bolt 10 Cross-linking board 11 Air ejection pipe 12 Stirrer 13 Bowl 16 Drain trap pipe 17 Oil and fat content
【手続補正書】[Procedure amendment]
【提出日】平成１１年９月２７日（１９９９．９．２
７）[Submission date] September 27, 1999 (September 9, 1999
7)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００４】[0004]
【課題を解決するための手段】本発明は後者の微生物を
使用した装置の改良に係るものであって、その特徴とす
るところは、汚水流入槽本体内に仕切壁を立設して区画
された室を形成し、室には漏斗状をなし、且つ底面部に
透孔を穿設した曝気箱を槽底の一定高さ上方位置で槽内
壁面との間に一定の間隙があるように取付けしめ、これ
により槽本体の槽底部から廃水処理液の油脂分が上記間
隙内を通って曝気箱内へ流入するようなさしめるほか、
曝気箱内には油脂類の分解処理微生物や菌類等の繁殖す
るものとなした構成を特徴とする。このさい、複数の仕
切壁の使用で複数の室に区画して各室を前述同様の構成
で曝気箱を設けたり、また槽底側から浮上して曝気箱内
へ流入する油脂分の効率的な促進を図るために、油脂分
の流入する上記間隙下方に上向きの空気吹出管を配設し
たり、また上記曝気箱の箱底と槽底間に椀体を上向きに
配設して曝気箱及び椀体の槽底からの高さ位置が適宜変
えられるようにしたり、また曝気槽には攪拌機や空気吹
出管を配設したりする。SUMMARY OF THE INVENTION The present invention relates to the improvement of the latter device using microorganisms, and the feature of the present invention is that a partition wall is provided upright in a sewage inflow tank body. An aeration box having a funnel shape in the chamber and having a perforated hole formed in the bottom is provided so that there is a certain gap between it and the inner wall of the tank at a certain height above the bottom of the tank. In addition to this, the oil and fat of the wastewater treatment liquid flows from the bottom of the tank body into the aeration box through the gap,
The aeration box is characterized by a configuration in which microorganisms, fungi, and the like, which are processed by decomposing oils and fats, propagate. At this time, the use of a plurality of partition walls divides the chamber into a plurality of chambers, and each chamber is provided with an aeration box in the same configuration as described above, or the oil and fat that floats from the bottom of the tank and flows into the aeration box is efficiently used. In order to facilitate the aeration, an upward air blow-off pipe is arranged below the gap into which the oil and fat flows, or a bowl is arranged upward between the box bottom and the tank bottom of the aeration box, and the aeration box and The height of the bowl from the tank bottom can be changed as appropriate, and the aeration tank is provided with a stirrer or an air blowing pipe.
Claims (4)
数の室に区画すると共に、各室は槽底で相互に連通する
状態となさしめ、且つ区画された室の少なくとも１つに
は漏斗状をなし、且つ底面部に透孔を穿設した曝気箱を
槽底の一定高さ上方位置で槽内壁面との間に一定の間隙
があるように取付けしめ、これにより槽本体の槽底部か
ら廃水処理液の油脂分が上記間隙内を通って曝気箱内へ
流入するようなさしめるほか、曝気箱内には油脂類の分
解処理微生物や菌類等の繁殖するものとなした構成を特
徴とする廃水処理装置。1. A partition wall is erected in a main body of a sewage inflow tank, divided into a plurality of chambers, and each chamber is connected to each other at a bottom of the tank, and at least one of the divided chambers is provided. Aeration box having a funnel shape and having a perforated hole in the bottom part is attached so that there is a certain gap between it and the inner wall surface of the tank at a certain height above the bottom of the tank. In addition to the fact that the fats and oils of the wastewater treatment liquid flow into the aeration box from the bottom of the tank through the above-mentioned gap, the decomposition of the fats and oils in the aeration box and the propagation of microorganisms and fungi A wastewater treatment device characterized by the above-mentioned.
間に形成した一定の間隙下方に上向きの空気吹出管を配
設したことを特徴とする請求項１記載の廃水処理装置。2. The wastewater treatment apparatus according to claim 1, wherein an upward air blowing pipe is disposed below a fixed gap formed between the inner wall surface or the partition wall surface of the tank body and the peripheral edge of the aeration box.
配設し、曝気箱及び椀体の槽底からの高さ位置が、適宜
変えられるように取付けてあることを特徴とした請求項
１又は２記載の廃水処理装置。3. A bowl is disposed upward between a box bottom and a tank bottom of an aeration box, and is mounted so that the height positions of the aeration box and the bowl from the tank bottom can be appropriately changed. The wastewater treatment device according to claim 1 or 2.
配設したことを特徴とする請求項１，２又は３記載の廃
水処理装置。4. The wastewater treatment apparatus according to claim 1, wherein a stirrer and / or an air blowing pipe is provided in the aeration box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10379999A JP3008287B1 (en) | 1999-04-12 | 1999-04-12 | Wastewater treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10379999A JP3008287B1 (en) | 1999-04-12 | 1999-04-12 | Wastewater treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3008287B1 JP3008287B1 (en) | 2000-02-14 |
| JP2000288580A true JP2000288580A (en) | 2000-10-17 |
Family
ID=14363454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10379999A Expired - Lifetime JP3008287B1 (en) | 1999-04-12 | 1999-04-12 | Wastewater treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3008287B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010143920A3 (en) * | 2009-06-11 | 2011-04-21 | Han Sang Kwan | Total environmentally friendly process for purifying tap water that is introduced into a water tank into clean water or purifying contaminated river water into clean water as well as purifying seawater into clean drinking water |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10196291B1 (en) | 2015-09-09 | 2019-02-05 | Adelante Consulting, Inc. | Wastewater treatment |
-
1999
- 1999-04-12 JP JP10379999A patent/JP3008287B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010143920A3 (en) * | 2009-06-11 | 2011-04-21 | Han Sang Kwan | Total environmentally friendly process for purifying tap water that is introduced into a water tank into clean water or purifying contaminated river water into clean water as well as purifying seawater into clean drinking water |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3008287B1 (en) | 2000-02-14 |
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