JPH0550059A - Method for purifying drinking water - Google Patents
Method for purifying drinking waterInfo
- Publication number
- JPH0550059A JPH0550059A JP3213475A JP21347591A JPH0550059A JP H0550059 A JPH0550059 A JP H0550059A JP 3213475 A JP3213475 A JP 3213475A JP 21347591 A JP21347591 A JP 21347591A JP H0550059 A JPH0550059 A JP H0550059A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- water
- resin
- phenol resin
- raw material
- 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
Landscapes
- Carbon And Carbon Compounds (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は飲用に供する水を浄化す
る方法に関するものである。FIELD OF THE INVENTION The present invention relates to a method for purifying drinking water.
【0002】[0002]
【従来の技術】近年特に都市部及びその周辺の水道水が
臭く、まずいということが言われている。その原因は原
水の質の低下である。原水の汚染により、アンモニア性
窒素・鉄・マンガン・有機物の除去、消毒・殺菌給配水
中の細菌汚染の予防のために使われる塩素の量が増えた
ことにより、カルキ臭がきつくなり、また発癌性物質で
あるトリハロメタンも増えている。さらに、水源の富栄
養化によって増えた藻類が出すジオスミンや2−メチル
イソボルネオール(2−MIB)などによるカビ臭も強
くなってきている。このほか給水管の老朽化や、老朽化
していなくても材質そのものに問題がある場合、受水槽
の管理が悪い場合などには、さまざまな物質が溶け出し
たり、鉄さびや水垢が混入したりして見た目も悪く、ま
ずい水、ときには安全性に問題のある水が出ることもあ
る。2. Description of the Related Art Recently, it is said that tap water in and around an urban area is bad and bad. The cause is deterioration of the quality of raw water. Contamination of raw water increases the amount of chlorine used to remove ammoniacal nitrogen, iron, manganese, and organic substances, and disinfects and sterilizes water to prevent bacterial contamination. The amount of trihalomethane, which is a substance, is also increasing. Furthermore, the mold odor due to diosmin, 2-methylisoborneol (2-MIB), etc. produced by algae increased due to the eutrophication of the water source is becoming stronger. In addition, if the water pipe is deteriorated, or if there is a problem with the material itself even if it is not deteriorated, or if the water tank is poorly managed, various substances may melt out, or iron rust or scale may be mixed. It looks bad, and sometimes bad water, or sometimes water with safety problems, comes out.
【0003】そこで、このような水道水の不快・有害な
異臭異物を取り除く機能を持った浄水器が、一般家庭で
も使われるようになった。これらの浄水器には、活性炭
を使ったものが多い。活性炭としては椰子殻活性炭・石
炭系活性炭・活性炭繊維などが使われており、カルキ臭
・かび臭・トリハロメタン、その他の有機物、それに赤
水の一部を減らす効果がある。また、簡便な方法として
浄水器で使われたものと同じ様な活性炭を、目の詰まっ
た不織布に包んで、やかん等に汲んだ飲用水に浸漬しカ
ルキ臭・かび臭・トリハロメタン、その他の有機物を取
り除くという方法が用いられている。Therefore, such a water purifier having a function of removing unpleasant and harmful foreign substances having an offensive odor in tap water has come to be used in general households. Many of these water purifiers use activated carbon. Coconut shell activated carbon, coal-based activated carbon, activated carbon fiber, etc. are used as the activated carbon, which has the effect of reducing the odor of musty odor, musty odor, trihalomethane, other organic substances, and part of red water. Also, as a simple method, wrap the activated carbon similar to that used in the water purifier with a non-woven cloth and soak it in drinking water pumped into a kettle etc. to remove the odor of musty odor, musty odor, trihalomethane, and other organic substances. The method of removing is used.
【0004】[0004]
【発明が解決しようとする課題】上記のように活性炭を
使えば、カルキ臭・かび臭・トリハロメタン等が除去で
きる効果はあるが、一方では次のような課題も持ってい
る。The use of activated carbon as described above is effective in removing odors of musty odor, musty odor, trihalomethane, etc., but it also has the following problems.
【0005】まず、破砕状の椰子殻活性炭・石炭系活性
炭・活性炭繊維などは微粉や極短繊維が生じる。このた
め、浄水器などのように通水式で使う場合には、活性炭
の後段に目の細かいフィルタを設ける必要がある。この
ため、浄水器をつけた場合の流量は、つけない場合の約
1/4以下になるという欠点がある。また、やかんなど
に浸漬して使う場合でも、目の細かい不織布に包んで使
う必要があるので、水と活性炭の接触が悪くなり、効果
を出すのに時間が掛かるという欠点がある。さらに、椰
子殻活性炭・石炭系活性炭といった天然の原料のもの
は、水中に灰分を溶出する。この中でNaやKは、多す
ぎると脳卒中の確率を高めるおそれがあるといわれてい
る。First, crushed coconut shell activated carbon, coal-based activated carbon, activated carbon fibers, etc. produce fine powder and ultra-short fibers. For this reason, when used in a water-passing system such as a water purifier, it is necessary to provide a fine filter in the latter stage of activated carbon. For this reason, there is a drawback that the flow rate with the water purifier is about 1/4 or less of that without the water purifier. In addition, even when used by immersing it in a kettle or the like, it is necessary to wrap it in a fine non-woven fabric so that the contact between water and activated carbon deteriorates and it takes time to produce the effect. Furthermore, natural raw materials such as palm shell activated carbon and coal-based activated carbon elute ash in water. Of these, it is said that if the content of Na or K is too large, the probability of stroke may be increased.
【0006】本発明は上記課題を解決するもので、浄化
性能が高く、効果を短時間に出せ、かつ供給流量の変化
が少ない飲用水の浄化方法を提供することを第一の目的
としている。また前記第一の目的に加え、微粉の混入を
更に少なくできる飲用水の浄化方法を提供することを第
二の目的としている。更に、飲用に供する湯の浄化が効
率的に行える飲用水の浄化方法を提供することを第三の
目的としている。The present invention is intended to solve the above problems, and it is a first object of the present invention to provide a method for purifying drinking water, which has a high purification performance, is effective in a short time, and has a small change in supply flow rate. In addition to the first object, it is a second object to provide a method for purifying drinking water which can further reduce the mixing of fine powder. Further, a third object is to provide a method for purifying drinking water, which enables efficient purification of hot water used for drinking.
【0007】[0007]
【課題を解決するための手段】第一の目的を達成する本
発明の第一の手段は、飲用に供する水が、分子量が30
00以上のフェノール樹脂を原料とした活性炭を通過あ
るいは循環するようにした、あるいは前記水に前記活性
炭を浸漬するようにした飲用水の浄化方法とするもので
ある。[Means for Solving the Problems] The first means of the present invention for achieving the first object is that water to be drunk has a molecular weight of 30.
This is a method for purifying drinking water in which activated carbon made of a phenol resin of 00 or more as a raw material is passed through or circulated, or the activated carbon is immersed in the water.
【0008】第二の目的を達成する本発明の第二の手段
は、飲用に供する水が、樹脂の薄い膜をコーティングし
た活性炭を通過あるいは循環するようにした、あるいは
前記水に前記活性炭を浸漬するようにした飲用水の浄化
方法とするものである。A second means of the present invention for achieving the second object is that the water for drinking passes or circulates through activated carbon coated with a thin film of resin, or the activated carbon is immersed in the water. This is the method for purifying drinking water.
【0009】更に第三の目的を達成する本発明の第三の
手段は、湯沸かし容器内の一部に局部加熱室を設け、前
記局部加熱室で沸騰した水が上昇し、前記局部加熱室以
外の所に戻り混合されるまでの循環径路中に、活性炭を
設けた飲用水の浄化方法とするものである。Further, the third means of the present invention for achieving the third object is to provide a local heating chamber in a part of the boiling water container, in which water boiled in the local heating chamber rises, and other than the local heating chamber. The method is to purify drinking water by providing activated carbon in the circulation path until it is returned to and mixed.
【0010】[0010]
【作用】本発明の第一の手段は、微粉の発生が極めて少
ない活性炭に、飲用の水を、通過・循環・浸漬などの方
法で接触させるもので、特別に細かいフィルターや不織
布を必要としないものである。従って、活性炭と飲用水
の接触が良く、浄化効率が高くなると共に、使っている
うちに目詰まりがして流量が減るという心配がないもの
である。さらに、灰分などの不安定な成分の溶出が極め
て少ない飲用水浄化方法として作用するものである。The first means of the present invention is to bring drinking water into contact with activated carbon, which generates very little fine powder, by a method such as passage, circulation or immersion, and does not require a special fine filter or nonwoven fabric. It is a thing. Therefore, there is good contact between the activated carbon and the drinking water, the purification efficiency is high, and there is no concern that the flow rate will decrease due to clogging during use. Furthermore, it acts as a method for purifying drinking water in which unstable components such as ash are hardly eluted.
【0011】つまり、通常の樹脂で活性炭を作るために
は、ヘキサメチレンテトラミン等の硬化剤を混ぜて硬化
させるが、硬化剤が硬化や焼成の際にクラックやふくれ
を発生するため、極めて脆い活性炭になる。さらに、硬
化剤は不純物としても残るので、性能も悪いものとな
る。そこで本発明の第一の手段では、分子量3000以
上の自硬化性のフェノール樹脂の粉末を原料とした活性
炭を用いている。この活性炭は、硬化剤を混ぜなくても
加熱するとまず軟化し、隣の粒子同志が接着した後硬化
していき、焼結した形になるものである。また管理され
た合成樹脂であり、不純物や灰分がないので、組織が均
一で硬く微粉の発生が極めて少ない、高性能の活性炭で
ある。That is, in order to make activated carbon from a normal resin, a hardening agent such as hexamethylenetetramine is mixed and hardened. However, since the hardening agent causes cracks and blisters during hardening and firing, the activated carbon is extremely brittle. become. Further, the curing agent remains as an impurity, so that the performance becomes poor. Therefore, in the first means of the present invention, activated carbon made of a self-curing phenol resin powder having a molecular weight of 3000 or more as a raw material is used. This activated carbon is first softened when heated without mixing with a curing agent, then hardened after adhering adjacent particles to each other, and becomes a sintered form. It is a controlled synthetic resin, and since it has no impurities or ash, it is a high-performance activated carbon that has a uniform structure, is hard, and generates very little fine powder.
【0012】また本発明の第二の手段は、特に微粉の混
入をきわめて少なくする方法として作用するものであ
る。通常の椰子殻活性炭や石炭系の活性炭は、原料が天
然物で組織が不均一であり、また粉砕を行うため、比較
的砕けやすく微粉も多い。そこで本発明の第二の手段で
は、活性炭の表面やクラックあるいはマクロ孔の壁面
を、水あるいは熱湯で侵されず人体に影響を及ぼさない
樹脂で薄くコーティングして、活性炭としての作用を損
なうことなく、微粉の混入を防ぐことができるものであ
る。つまりコーティングによって、活性炭が有している
活性な細孔が塞がれることはなく、また微粉の発生も防
ぐことができるものである。[0012] The second means of the present invention acts as a method for extremely reducing the contamination of fine powder. Ordinary coconut shell activated carbon or coal-based activated carbon is a natural material and has a non-uniform structure, and since it is crushed, it is relatively fragile and often contains fine powder. Therefore, in the second means of the present invention, the surface of the activated carbon or the wall surface of the cracks or macropores is thinly coated with a resin that is not attacked by water or hot water and does not affect the human body, without impairing the action as activated carbon. It is possible to prevent the mixture of fine powder. In other words, the coating does not block the active pores of the activated carbon and also prevents the generation of fine powder.
【0013】また本発明の第三の手段は、湯沸かし容器
内の一部に循環経路を設け、この循環経路中に活性炭を
設けた飲用水の浄化方法とするものである。つまり通常
の沸騰よりも早く局部的に沸騰を開始させ、この沸騰水
が上昇してまた元の水面に戻る多数回の循環運動中に活
性炭層を通過し、高い効率で水を浄化するものである。
特に遊離塩素の分解は触媒反応であり、高い温度ほど早
く反応が進むので、非常に効果的である。またこの方法
によれば、少ない量の活性炭で短時間に効率的に浄化が
行えるものである。A third means of the present invention is a method for purifying drinking water in which a circulating path is provided in a part of a water heating container and activated carbon is provided in the circulating path. In other words, it starts boiling locally earlier than normal boiling, and this boiling water rises and returns to the original water surface.It passes through the activated carbon layer during many circulation movements and purifies water with high efficiency. is there.
In particular, the decomposition of free chlorine is a catalytic reaction, and the higher the temperature, the faster the reaction proceeds, which is very effective. Further, according to this method, it is possible to efficiently purify in a short time with a small amount of activated carbon.
【0014】[0014]
(実施例1)本発明の第一の実施例について図1〜図5
を参照しながら説明する。図1は活性炭層に湯を循環さ
せて浄化する湯沸かし器としての実施例である。1は湯
沸かし容器本体、2は湯沸かし容器の蓋で把手3がつい
ている。湯沸かし容器本体1の底部に接して加熱ヒータ
4がある。このヒータ4はスイッチ6を介して電源5に
接続されている。湯沸かし容器本体1の内部には、沸騰
管7を設けている。沸騰管7の下部は逆ロート状に広が
り局部加熱室8になり、その一部は湯の流通路9・10
が開いている。一方上部は細管になり、最上部11は開
口されている。この最上部11付近には、水面16から
距離をおいて活性炭15を充填したカートリッジ12を
設けている。カートリッジ12の上面14、下面13は
PPS(ポリ・フェニレンサルファイド)の目開き40
0μmのメッシュになっている。なお本実施例では、湯
沸かし容器本体1・沸騰管7はステンレス製としてい
る。(Embodiment 1) FIG. 1 to FIG. 5 on the first embodiment of the present invention
Will be described with reference to. FIG. 1 shows an embodiment as a water heater in which hot water is circulated through an activated carbon layer for purification. Reference numeral 1 is a main body of an electric kettle, and 2 is a lid of the electric kettle with a handle 3. There is a heater 4 in contact with the bottom of the water heater container body 1. The heater 4 is connected to a power source 5 via a switch 6. A boiling tube 7 is provided inside the water heating container body 1. The lower part of the boiling tube 7 spreads in an inverted funnel shape to form a local heating chamber 8, part of which is a hot water flow passage 9/10.
Is open. On the other hand, the upper part is a thin tube, and the uppermost part 11 is open. A cartridge 12 filled with activated carbon 15 is provided near the uppermost portion 11 at a distance from the water surface 16. The upper surface 14 and the lower surface 13 of the cartridge 12 have openings 40 of PPS (polyphenylene sulfide).
It has a mesh of 0 μm. In this embodiment, the water heating container body 1 and the boiling tube 7 are made of stainless steel.
【0015】ここで、本実施例に用いる活性炭15につ
いて詳細に説明する。原料としては自硬化性のあるフェ
ノール樹脂、ここでは一次・二次粒子が球状(粒径0.
1〜150μm)の樹脂ベルパール(鐘紡(株)製)の
粉末を用いている。この樹脂は分子量が3000以上
で、分子鎖が長く側鎖が短いため、粘り強く、また自硬
化性を有している。この樹脂粉末を転動造粒し球形に成
形した後炭化し、つづいて約900℃で水蒸気賦活す
る。このようにして作った活性炭15の粒径は、直径
0.5mm〜2.0mmで、中には偏平状などの異形の物も
見られた。図2にこの活性炭の部分拡大図を示す。21
は一次粒子である。前記球形に成形したものを加熱する
と、まず軟化して隣の粒子同志が接着した後、硬化して
いき、球状の粒子同志が焼結した形になる。その結果、
図2のように球状の一次粒子21の間に、数μm〜10
μmの連続な空隙22ができる。賦活の際の水蒸気は、
この連続空隙22を通って、一次粒子の隅々まで行き渡
り、半径10Å程度のミクロ孔がたくさん形成され、比
表面積が大きく高性能の活性炭になる。また、自硬化性
があり硬化剤などの添加物を使っていないため、組織が
均一で壊れにくく、かつ球形で表面が滑らかなため、粉
落ちや砕けが少ない。Now, the activated carbon 15 used in this embodiment will be described in detail. As a raw material, a self-curing phenol resin, in which primary and secondary particles are spherical (particle size: 0.
Powder of resin Bellpearl (manufactured by Kanebo Co., Ltd.) of 1 to 150 μm) is used. This resin has a molecular weight of 3000 or more, a long molecular chain and a short side chain, and thus is tenacious and self-curing. This resin powder is tumbled and formed into a spherical shape, then carbonized, and then steam activated at about 900 ° C. The particle size of the activated carbon 15 produced in this way was 0.5 mm to 2.0 mm in diameter, and some irregular shapes such as a flat shape were also found. FIG. 2 shows a partially enlarged view of this activated carbon. 21
Is a primary particle. When the spherically shaped material is heated, it is first softened so that the adjacent particles adhere to each other and then harden into a shape in which the spherical particles are sintered. as a result,
As shown in FIG. 2, a few μm to 10 are provided between the spherical primary particles 21.
A continuous void 22 of μm is formed. The water vapor during activation is
Through this continuous void 22, it spreads to every corner of the primary particle and many micropores with a radius of about 10 Å are formed, resulting in a high-performance activated carbon having a large specific surface area. In addition, since it has self-hardening properties and no additives such as hardeners are used, its structure is uniform and less likely to break, and its spherical shape and smooth surface reduce powder falling and crushing.
【0016】通常の分子量の小さいフェノール樹脂では
自硬化性がないので、ヘキサメチレンテトラミン等の硬
化剤を混ぜて硬化させ破砕して原料の粒を作り、これを
炭化して賦活し活性炭にすると、樹脂の分子鎖が短く弱
い構造となる。さらに硬化剤が硬化や焼成の際に、クラ
ックやふくれを発生させるので、極めて脆い活性炭にな
る。また硬化剤は不純物として残るので、性能も悪い活
性炭になる。Since a normal phenol resin having a small molecular weight does not have self-hardening property, a hardening agent such as hexamethylenetetramine is mixed and hardened and crushed to make raw material particles, which are carbonized and activated to give activated carbon. The molecular chain of the resin is short and weak. Furthermore, the curing agent causes cracks and blisters during curing and firing, resulting in extremely brittle activated carbon. In addition, the hardener remains as an impurity, resulting in activated carbon with poor performance.
【0017】一方、椰子殻活性炭は原料の椰子殻を粉砕
し炭化したもので、一つの塊状のものである。これを水
蒸気で孔を開け賦活すると、孔の入口は数μmの大きな
孔で、奥に行くほど細い孔になっていく、枝分かれ状の
細孔を形成する。したがって、本実施例で用いるフェノ
ール樹脂原料の活性炭と比較すると、細い孔の割合が少
なく、比表面積も少し小さいものとなる。また、原料が
天然物で組織が不均一であり、粉砕を行うため、比較的
砕けやすく微粉も多くなる。On the other hand, the coconut shell activated carbon is one obtained by crushing and carbonizing the coconut shell as a raw material, and is one lump. When this is activated by opening holes with water vapor, the entrance of the holes is a large hole having a size of several μm, and branched fine holes are formed such that the holes become narrower as they go deeper. Therefore, as compared with the activated carbon of the phenol resin raw material used in this example, the ratio of fine pores is small and the specific surface area is slightly small. In addition, since the raw material is a natural product and the texture is non-uniform and it is crushed, it is relatively easily crushed and the amount of fine powder increases.
【0018】図3・図4に、前記自硬化性フェノール樹
脂を原料とした活性炭の細孔分布23・25と、累積細
孔容積24・26の測定データを2例示している。また
図5には、椰子殻活性炭の細孔分布27と累積細孔容積
28の測定データの例を示している。これらの測定はH
2O吸着法で行った。一方BETの比表面積を測定した
ところ、図3のものは1300m2/g、図4のものは
1600m2/g、図5のものは1300m2/gであっ
た。これらからわかるように、同じ比表面積でフェノー
ル樹脂系と椰子殻活性炭とを比較すると、フェノール樹
脂系の方が最大細孔半径が小さい。また最大細孔半径を
同じ程度にすると、比表面積はフェノール樹脂系の方が
明らかに大きい。すなわち、フェノール樹脂系の方が大
きな細孔が少なく、小さい細孔が多く、同じ性能を出す
活性炭を選定した場合、椰子殻活性炭の方が脆いものと
なる。FIGS. 3 and 4 show two measurement data of the pore distributions 23 and 25 and the cumulative pore volumes 24 and 26 of the activated carbon made of the self-curing phenol resin as a raw material. Further, FIG. 5 shows an example of measurement data of the pore distribution 27 and the cumulative pore volume 28 of the palm shell activated carbon. These measurements are H
The 2 O adsorption method was used. Meanwhile Measurement of the specific surface area of BET, that of Figure 3 is 1300 m 2 / g, that of Figure 4 is 1600 m 2 / g, that of Figure 5 was 1300 m 2 / g. As can be seen from these, when the phenol resin type and the coconut shell activated carbon are compared with the same specific surface area, the phenol resin type has a smaller maximum pore radius. Further, when the maximum pore radii are set to the same level, the specific surface area is obviously larger in the phenol resin system. That is, when the activated carbon which has the same performance as the phenol resin type has less large pores and more small pores and has the same performance, the coconut shell activated carbon becomes more brittle.
【0019】次に、比表面積1600m2/gのフェノ
ール樹脂系活性炭と、粒度14〜24メッシュの130
0m2/gの椰子殻活性炭の微粉発生量を比較測定し
た。測定方法を下に示す。Next, a phenol resin-based activated carbon having a specific surface area of 1600 m 2 / g and 130 having a particle size of 14 to 24 mesh are used.
The generation amount of fine powder of 0 m 2 / g coconut shell activated carbon was comparatively measured. The measuring method is shown below.
【0020】室温24℃で、活性炭2.0gを100ml
の共栓付きフラスコに、エチルアルコール50mlと共に
入れ、これを振とう機で140回/分の条件で30分間
振とうする。この液の吸光度を測定し、検量線から微粉
量(mg/ml)を求める。この結果を活性炭の特性と合わ
せて表1に示す。100 ml of 2.0 g of activated carbon at room temperature of 24 ° C.
50 ml of ethyl alcohol was placed in a flask with a ground stopper, and this was shaken on a shaker at 140 times / min for 30 minutes. The absorbance of this solution is measured and the amount of fine powder (mg / ml) is determined from the calibration curve. The results are shown in Table 1 together with the characteristics of activated carbon.
【0021】[0021]
【表1】 [Table 1]
【0022】上記方法によると本実施例に使うフェノー
ル樹脂系活性炭は0.0036mg/mlで試験液の濁りは
目視ではわからないが、椰子殻活性炭は0.23mg/ml
で極めて多く、試験溶液は明らかに黒く濁っていた。こ
のことより、本実施例の活性炭として椰子殻活性炭を使
うためには、極めて通水抵抗の大きいフィルタをカート
リッジ12の下面13に設けなければならない。その結
果、カートリッジ12の上面14より湯があふれ、湯の
循環が悪くなるので椰子殻活性炭は使うことができな
い。According to the above method, the phenol resin-based activated carbon used in this example was 0.0036 mg / ml, and the turbidity of the test solution was not visually recognized, but the coconut shell activated carbon was 0.23 mg / ml.
The test solution was clearly black and cloudy. Therefore, in order to use coconut shell activated carbon as the activated carbon of the present embodiment, a filter having extremely high water resistance must be provided on the lower surface 13 of the cartridge 12. As a result, the hot water overflows from the upper surface 14 of the cartridge 12, and the circulation of the hot water deteriorates, so that the coconut shell activated carbon cannot be used.
【0023】以上のような理由から、本実施例では活性
炭15としては、自硬化性のあるフェノール樹脂を原料
とした比表面積1600m2/gの活性炭を10g使っ
た。なお、菌の繁殖防止のために活性炭に銀を添着した
ものを使ってもかまわない。For the above reasons, as the activated carbon 15 in the present embodiment, 10 g of activated carbon having a specific surface area of 1600 m 2 / g and made of a self-curing phenol resin as a raw material was used. It should be noted that activated carbon with silver impregnated may be used to prevent the growth of bacteria.
【0024】次に本実施例の湯沸かし器の動作について
説明する。湯沸かし容器本体1に水道水を入れ、スイッ
チ6を閉成しヒータ4に電圧を印加する。湯沸かし容器
本体1の水は加熱され、温度が上昇する。特に局部加熱
室8中の水は、他の部分とは隔離されているため温度上
昇が早く、沸騰の開始も早い。沸騰が開始されると局部
加熱室8の中の圧力が高まり、この部分の水は沸騰管7
の最上部11から吹き上がり、活性炭15の上に降りそ
そいで、カートリッジ12の下面13から抜け、水面1
6に落ちる。一方局部加熱室8は、沸騰管11から沸騰
水が吹き上がると減圧状態となり、流通路9・10より
温度の低い水が流入する。このようにして、水は局部加
熱室8・沸騰管7から湯沸かし容器本体1に循環する。
この循環運動中に、活性炭15による浄化が繰り返さ
れ、水道水は浄化される。Next, the operation of the water heater of this embodiment will be described. Tap water is put in the water heating container body 1, the switch 6 is closed, and a voltage is applied to the heater 4. The water in the kettle body 1 is heated and its temperature rises. In particular, the water in the local heating chamber 8 is isolated from the other parts, so that the temperature rises quickly and the boiling starts quickly. When boiling starts, the pressure in the local heating chamber 8 rises, and the water in this part is heated by the boiling pipe 7
Blow up from the uppermost part 11 of the cartridge, fall on the activated carbon 15, and then come out from the lower surface 13 of the cartridge 12 to reach the water surface 1.
Fall to 6. On the other hand, when the boiling water is blown up from the boiling pipe 11, the local heating chamber 8 is in a depressurized state, and water having a lower temperature than the flow passages 9 and 10 flows in. In this way, water circulates from the local heating chamber 8 / boiling tube 7 to the water heating container body 1.
During this circulation movement, the purification by the activated carbon 15 is repeated and the tap water is purified.
【0025】水道水中の遊離塩素は、加熱沸騰・吹き上
げ拡散による蒸散に加え、活性炭の触媒作用によって、
臭いのない塩素イオンに分解される。またトリハロメタ
ンについても加熱沸騰・吹き上げ拡散による蒸散に加
え,遊離塩素が極めて早く減少するので、遊離塩素とフ
ミン質などの有機物が反応して新たにトリハロメタンが
生成されることがなく、その除去効果も大きい。さら
に、かび臭についても、加熱沸騰・吹き上げ拡散による
蒸散によって除去される。表2に本実施例の湯沸かし器
の、遊離塩素・トリハロメタン・かび臭の原因物質であ
る2−MIBの除去性能を、沸騰管や活性炭を使わない
単なる湯沸かしと比較して示した。なお、測定は下記の
方法で行った。測定は3回行い、その結果の範囲を表2
に示した。 (条件)ヒータを800W、水の量は2lとし、測定は湯
の温度が100℃に達して40秒後,3分後に行った。
なお、湯を急冷して50℃以下にしたものをサンプルと
した。また次亜塩素酸ナトリウムで遊離塩素の初期濃度
を1ppmに、標準液を使って2−MIBの初期濃度を1
00pptに調整したものを原液とした。 (測定1)上水試験法の残留塩素項目、DPD法に従い
測定した。 (測定2)上水試験法のトリハロメタン項目、ECDガ
スクロマトグラフ法に従い、総トリハロメタン量を測定
した。 (測定3)ガスクロマトグラフ−質量分析法で2−MI
Bの濃度を測定した。Free chlorine in tap water is evaporated by heating boiling and blowing up diffusion, and by the catalytic action of activated carbon,
Decomposed into odorless chlorine ions. In addition to trihalomethane, the free chlorine decreases extremely quickly in addition to evaporation by heating boiling and blowing up diffusion, so that free chlorine and organic substances such as humic substances do not react to generate new trihalomethane, and its removal effect is also high. large. Furthermore, the musty odor is also removed by evaporation by heating boiling / blowing up diffusion. Table 2 shows the removal performance of 2-MIB, which is a causative substance of free chlorine, trihalomethane, and musty odor, in the water heater of the present embodiment in comparison with a simple water heater that does not use a boiling tube or activated carbon. The measurement was carried out by the following method. The measurement was performed 3 times, and the range of the result is shown in Table 2.
It was shown to. (Conditions) The heater was 800 W, the amount of water was 2 l, and the measurement was performed 40 seconds and 3 minutes after the temperature of the hot water reached 100 ° C.
A sample was prepared by rapidly cooling hot water to 50 ° C or lower. The initial concentration of free chlorine was set to 1 ppm with sodium hypochlorite, and the initial concentration of 2-MIB was set to 1 using the standard solution.
The stock solution was adjusted to 00 ppt. (Measurement 1) Residual chlorine items in the water supply test method and the DPD method were used. (Measurement 2) The total amount of trihalomethane was measured according to the trihalomethane item of the water supply test method and the ECD gas chromatograph method. (Measurement 3) 2-MI by gas chromatography-mass spectrometry
The concentration of B was measured.
【0026】[0026]
【表2】 [Table 2]
【0027】表2から明らかなように本実施例によれ
ば、単なる沸騰加熱に比べて水道水の遊離塩素・トリハ
ロメタン及びかび臭を効率的に除去できる。特に、遊離
塩素・トリハロメタンの除去効果が大きい。As is clear from Table 2, according to this example, free chlorine / trihalomethane and musty odor of tap water can be removed more efficiently than by simple boiling heating. Especially, the effect of removing free chlorine and trihalomethane is great.
【0028】(実施例2)以下本発明の第二の実施例に
ついて、説明する。本実施例においては、実施例1の活
性炭15として、石油ピッチを原料とした球状活性炭に
樹脂コートしたものを用いている。ここではクレハ球状
活性炭BAC、品番LP(呉羽化学工業(株)製)を使
用した。樹脂コートはポリプロピレンの微粉末を活性炭
にまぶし、溶融することによって行った。これによって
活性炭の表面・クラック部・マクロ孔の壁面といった粉
末の発生しやすい所に、樹脂が薄くコートされるもので
ある。活性炭粒の直径は0.50mm〜0.70mmであ
り、これを10g使用している。この活性炭の微粉発生
量を、樹脂コートしないものと比較して表3に示してい
る。(Second Embodiment) The second embodiment of the present invention will be described below. In this example, as the activated carbon 15 of Example 1, a spherical activated carbon made of petroleum pitch as a raw material and coated with a resin is used. Here, Kureha spherical activated carbon BAC, product number LP (manufactured by Kureha Chemical Industry Co., Ltd.) was used. The resin coating was performed by sprinkling activated carbon on a fine powder of polypropylene and melting it. As a result, the resin is thinly coated on the surface of the activated carbon, cracks, walls of macropores, etc. where powder is likely to be generated. The diameter of the activated carbon particles is 0.50 mm to 0.70 mm, and 10 g of this is used. The amount of fine powder generated from this activated carbon is shown in Table 3 in comparison with that without resin coating.
【0029】[0029]
【表3】 [Table 3]
【0030】石油ピッチ原料の球状活性炭は、バインダ
ーなしで石油ピッチを溶媒に入れて攪拌することによっ
て、表面張力を利用して球状にしている。このため表面
の平滑性は良く、微粉発生量は椰子殻活性炭に比べると
少ないが、試験液はわずかに黒く濁り、使用前に毎回水
洗すれば使える程度である。これに樹脂コートした本実
施例のものは、試験液の濁りは目視ではわからない程度
であり、予備水洗なしに使えるものである。The spherical activated carbon as a raw material for petroleum pitch is made spherical by utilizing surface tension by putting petroleum pitch in a solvent without a binder and stirring. Therefore, the surface is smooth and the amount of fine powder generated is smaller than that of coconut shell activated carbon, but the test solution is slightly black and turbid, and can be used by washing with water before each use. The resin-coated product of the present example is such that the turbidity of the test liquid cannot be visually recognized, and can be used without pre-washing.
【0031】この実施例で、40秒沸騰後、3分沸騰後
の浄化性能を測定したところ、実施例1とほぼ同じでそ
の差は実験誤差内であった。In this example, when the purification performance after boiling for 40 seconds and after boiling for 3 minutes was measured, it was almost the same as in Example 1 and the difference was within the experimental error.
【0032】(実施例3)次に、本発明の第三の実施例
について説明する。本実施例では実施例1の活性炭15
として、破砕状の椰子殻活性炭に実施例2と同じ方法で
樹脂コートしたものを用いている。コーティング材とし
て本実施例では、ポリプロピレンを使用している。活性
炭の粒度は12〜24メッシュのものであり、これを1
0g使用している。この活性炭の微粉発生量を、実施例
1・同2および樹脂コートしない椰子殻活性炭と比較し
て表4に示している。(Embodiment 3) Next, a third embodiment of the present invention will be described. In this example, the activated carbon 15 of Example 1 was used.
As the crushed coconut shell activated carbon, resin-coated by the same method as in Example 2 is used. In this embodiment, polypropylene is used as the coating material. The particle size of activated carbon is 12 to 24 mesh.
I use 0g. The amount of fine powder generated from this activated carbon is shown in Table 4 in comparison with Examples 1 and 2 and the coconut shell activated carbon not coated with resin.
【0033】[0033]
【表4】 [Table 4]
【0034】表4から明らかなように、樹脂コートしな
い椰子殻活性炭に比べると、樹脂コートした本実施例の
ものは、実施例1・同2よりは少し多いが、従来の物に
比べると極めて微粉量は減少し、試験液の濁りは目視で
はわからない程度である。As is clear from Table 4, the resin-coated coconut shell activated carbon of this example is slightly more than those of Examples 1 and 2 in comparison with the non-resin-coated coconut shell activated carbon. The amount of fines decreased, and the turbidity of the test solution was invisible to the naked eye.
【0035】この実施例で、40秒沸騰後、3分沸騰後
の浄化性能を測定したところ、実施例1・同2とほぼ同
じでその差は実験誤差内であった。In this example, when the cleaning performance after boiling for 40 seconds and after boiling for 3 minutes was measured, it was almost the same as in Examples 1 and 2, and the difference was within the experimental error.
【0036】(実施例4)本発明の第四の実施例につい
て、図6をもとに説明する。本実施例は浄水器について
の物である。31は本体ケース上、32は本体ケース下
で、この両者はねじ部33でねじ結合している。本体ケ
ース上31の上部には注水口34があり、本体ケース下
32の下部には出水口35がある。また本体の中には活
性炭39を充填した、着脱自在のカートリッジ36があ
る。カートリッジ36の上面37・下面38はメッシュ
からなっている。このメッシュは耐水性があるもので、
食品衛生的に問題がない材料であれば何でも良いが、こ
こでは目開き435μのポリエステル製のものを用いて
いる。また、40はゴムパッキンである。なお、カート
リッジ36はねじ結合33をはずせば取り外すことがで
きる。(Embodiment 4) A fourth embodiment of the present invention will be described with reference to FIG. This embodiment relates to a water purifier. Reference numeral 31 is an upper part of the main body case, and 32 is a lower part of the main body case. A water injection port 34 is provided on the upper part of the main body case 31, and a water outlet 35 is provided on the lower part of the main body case lower part 32. In the main body, there is a removable cartridge 36 filled with activated carbon 39. The upper surface 37 and the lower surface 38 of the cartridge 36 are made of mesh. This mesh is water resistant,
Any material may be used as long as it has no problem in food hygiene, but here, a polyester material having an opening of 435 μ is used. Further, 40 is a rubber packing. The cartridge 36 can be removed by removing the screw connection 33.
【0037】本実施例の活性炭39としては、実施例1
と同じ自硬化性のあるフェノール樹脂を原料として作っ
た、直径0.5〜2.0mmの球形の活性炭を50g使用
している。なお、この活性炭の比表面積は1600m2
/gである。また、本実施例では菌の繁殖を防止するた
め銀を0.08重量%添着している。The activated carbon 39 of this embodiment is the same as that of the first embodiment.
50 g of spherical activated carbon having a diameter of 0.5 to 2.0 mm, which is made from the same self-curing phenol resin as the raw material, is used. The specific surface area of this activated carbon is 1600 m 2.
/ G. Further, in this embodiment, 0.08% by weight of silver is impregnated in order to prevent the growth of bacteria.
【0038】次にこの浄水器具の注水口34を水道の蛇
口につけ、使用したときの浄水性能を実施例1と同じ測
定方法で確認した。なお本実験においては、原水の調整
はせずにそのまま使用している。その時の遊離塩素濃度
は0.8ppm、総トリハロメタンは37ppb、2−MIB
は36pptであった。結果は、遊離塩素の除去率は88
〜93%、トリハロメタンの除去率は68〜75%、2
−MIBの除去率は70〜75%であり、カルキ臭・か
び臭のない水を得ることができた。また、2000lの
水道水を通水した後も遊離塩素の除去能力は80%以上
あった。尚本実験の比較例として、12〜24メッシュ
の破砕状椰子殻活性炭(比表面積1300m2/g)5
0gを使用している。この場合微粉が発生するので、カ
ートリッジ36の上面37、同下面38にはメッシュは
使えないので、目付約200g/m2のポリエステル製
の不織布を使用した。この場合浄水性能としては本実施
例とほぼ同じになる。実施例と比較例の違いは出水量で
ある。浄水器具をつけない場合の出水量を8〜10l/
分にし、浄水器具を付けた場合、比較例では不織布の影
響で2.2〜2.6l/分しかでないが、実施例では
3.5〜4.0l/分と多く出すことができる。Next, the water inlet 34 of this water purifier was attached to the tap of the tap, and the water purification performance when used was confirmed by the same measuring method as in Example 1. In this experiment, raw water was used as it was without adjustment. At that time, the free chlorine concentration was 0.8 ppm, the total trihalomethane was 37 ppb, and 2-MIB.
Was 36 ppt. As a result, the removal rate of free chlorine was 88.
~ 93%, trihalomethane removal rate is 68-75%, 2
-The removal rate of MIB was 70 to 75%, and water without chlorine and mold odor could be obtained. Even after passing 2000 liters of tap water, the removal ability of free chlorine was 80% or more. As a comparative example of this experiment, 12 to 24 mesh crushed coconut shell activated carbon (specific surface area 1300 m 2 / g) 5
0g is used. In this case, since fine powder is generated, meshes cannot be used for the upper surface 37 and the lower surface 38 of the cartridge 36, so a polyester non-woven fabric having a basis weight of about 200 g / m 2 was used. In this case, the water purification performance is almost the same as that of this embodiment. The difference between the example and the comparative example is the water output. The amount of water output without a water purifier is 8-10l /
In the case where the water purifying device is attached, the comparative example shows only 2.2 to 2.6 l / min due to the influence of the non-woven fabric, but in the example, the amount can be increased to 3.5 to 4.0 l / min.
【0039】(実施例5)本発明の第五の実施例につい
て、図7・図8をもとに説明する。本実施例は、は水中
に浸漬して使う、活性炭パックとしてのものである。5
1はポリエステルのメッシュで作った袋で、実施例2で
使ったものと同じものを使った。袋51の中に活性炭5
2を入れ上部を折り曲げて、ひも53をホチキス54で
とめてある。(Embodiment 5) A fifth embodiment of the present invention will be described with reference to FIGS. The present embodiment is for an activated carbon pack to be used by immersing it in water. 5
1 is a bag made of polyester mesh, which is the same as that used in Example 2. Activated carbon 5 in the bag 51
2 is put in, the upper part is bent, and the string 53 is fixed with a stapler 54.
【0040】本実施例の活性炭52としては、実施例1
と同じ自硬化性のあるフェノール樹脂を原料として作っ
た、直径0.5〜2.0mmの球形の活性炭を15g使用
している。なお、この活性炭の比表面積は1600m2
/gである。また、菌の繁殖を防止するため銀を添着し
ても良い。The activated carbon 52 of this embodiment is the same as that of the first embodiment.
15 g of spherical activated carbon having a diameter of 0.5 to 2.0 mm, which is made from the same self-curing phenol resin as the raw material, is used. The specific surface area of this activated carbon is 1600 m 2.
/ G. Further, silver may be attached to prevent the growth of bacteria.
【0041】次にこの活性炭パックを、実施例1の沸騰
管・活性炭のない単なる湯沸かし器に使用したときの、
遊離塩素・トリハロメタンの浄化性能を、実施例1と同
様の測定方法で確認した。湯沸かし器に水道水を2l入
れ、スイッチ6を閉成し、ヒータ4に電圧を印加した直
後に、活性炭パックを水の中に投入する。Next, when this activated carbon pack was used for a simple water heater without the boiling tube and activated carbon of Example 1,
The purification performance of free chlorine / trihalomethane was confirmed by the same measurement method as in Example 1. 2 l of tap water is put in the water heater, the switch 6 is closed, and immediately after the voltage is applied to the heater 4, the activated carbon pack is put into the water.
【0042】比較例として、12〜24メッシュの破砕
状椰子殻活性炭(比表面積1300m2/g)15gを
使用している。この場合微粉が発生するので、袋51に
はメッシュは使えないので、目付約30g/m2の糸の
細いポリエステル製の湿式法不織布を使用している。As a comparative example, 15 g of crushed coconut shell activated carbon (specific surface area 1300 m 2 / g) of 12 to 24 mesh is used. In this case, since fine powder is generated, a mesh cannot be used for the bag 51. Therefore, a wet process non-woven fabric made of polyester with a fine weight of about 30 g / m 2 is used.
【0043】本実施例と比較例について、沸騰開始40
秒後に、水をサンプリングし、浄化性能を測定した結果
を表5に示している。For this example and the comparative example, boiling start 40
After 5 seconds, water is sampled and the purification performance is measured. The results are shown in Table 5.
【0044】[0044]
【表5】 [Table 5]
【0045】この結果から明らかなように、本実施例の
ほうが遊離塩素・トリハロメタンの除去効果は大きい。
これは、袋51がメッシュと不織布の違いにより、活性
炭と水の接触効率がことなることにより起こるものと考
えられる。また、比較例においては水が不織布中を通り
にくいため、活性炭パックが浮き上がりやすく、除去効
果が低くなっていることも考えられる。As is clear from this result, the effect of removing free chlorine / trihalomethane is greater in this example.
It is considered that this is because the contact efficiency of activated carbon and water is different due to the difference in the bag 51 between the mesh and the non-woven fabric. In addition, in the comparative example, it is conceivable that the activated carbon pack is likely to float because water does not easily pass through the nonwoven fabric, resulting in a low removal effect.
【0046】さらに、イオン交換水2lに活性炭パック
をいれ、沸騰60分後に溶出しているイオンの濃度を、
原子吸光分析で測定した。その結果を表6に示してい
る。Furthermore, an activated carbon pack was put in 2 liters of ion-exchanged water, and the concentration of the ions eluted after 60 minutes of boiling was changed to
It was measured by atomic absorption spectrometry. The results are shown in Table 6.
【0047】[0047]
【表6】 [Table 6]
【0048】この結果から明らかなように、ほとんど不
純物のない本実施例の活性炭では、椰子殻活性炭にくら
べて極めてイオンの溶出が少ない。特に脳卒中の確率を
高めるNa・Kの溶出が少ない。また水質を変えないの
で、水の味に微妙に影響を与えることがない。As is clear from these results, the activated carbon of this example containing almost no impurities has a significantly smaller amount of ion elution than the coconut shell activated carbon. In particular, there is little elution of Na / K, which increases the probability of stroke. Moreover, since the water quality is not changed, the taste of the water is not subtly affected.
【0049】なお実施例4・同5においても、実施例2
・同3で使用した樹脂コートした球状炭・椰子殻活性炭
を使用することができる。In the fourth and fifth embodiments, the second embodiment is also used.
-The resin-coated spherical charcoal and coconut shell activated carbon used in 3 can be used.
【0050】[0050]
【発明の効果】以上の実施例からも明らかなように、本
発明によれば微粉の発生がなく、高性能の活性炭を用い
るので、常温の水に限らず高温の水にも使用でき、かつ
水と活性炭の接触効率を高めることができる。また、不
純物の混入がほとんどないので、不安定成分の溶出が極
めて少ない。したがって、飲用水の水質を悪くする事な
く、カルキ臭・かび臭やトリハロメタンを効率的に、高
性能に除去する方法を提供できる。As is apparent from the above examples, according to the present invention, since fine powder is not generated and high-performance activated carbon is used, it can be used not only at room temperature water but also at high temperature water, and The contact efficiency between water and activated carbon can be increased. In addition, since almost no impurities are mixed in, the unstable components are hardly eluted. Therefore, it is possible to provide a method for efficiently removing scaly odor, musty odor, and trihalomethane with high performance without deteriorating the quality of drinking water.
【0051】一方、局部加熱で循環径路を作り、その径
路に活性炭を置くことにより、少ない活性炭で高効率で
湯を浄化できる方法を提供できる。これらの方法は、浄
水器・湯沸かし器・コーヒ沸かし器・給茶器・給水機な
どに応用できる。On the other hand, by forming a circulation path by local heating and placing activated carbon in the path, it is possible to provide a method capable of highly efficiently purifying hot water with a small amount of activated carbon. These methods can be applied to water purifiers, water heaters, coffee heaters, tea dispensers, water dispensers, etc.
【図1】本発明の第一の実施例の湯沸かし器の断面図FIG. 1 is a sectional view of a water heater according to a first embodiment of the present invention.
【図2】同実施例に用いる自硬化性フェノール樹脂から
作った球形活性炭の部分拡大図FIG. 2 is a partially enlarged view of a spherical activated carbon made from a self-curing phenol resin used in the same example.
【図3】同球形活性炭の細孔分布と累積細孔容積を表す
グラフFIG. 3 is a graph showing the pore distribution and cumulative pore volume of the spherical activated carbon.
【図4】図3のものとは比表面積が異なる球形活性炭の
細孔分布と累積細孔容積を表すグラフFIG. 4 is a graph showing pore distribution and cumulative pore volume of spherical activated carbon having a specific surface area different from that of FIG.
【図5】椰子殻活性炭の細孔分布と累積細孔容積を表す
グラフFIG. 5 is a graph showing the pore distribution and the cumulative pore volume of coconut shell activated carbon.
【図6】本発明の第二の実施例の浄水器具の断面図FIG. 6 is a sectional view of a water purification apparatus according to a second embodiment of the present invention.
【図7】本発明の第三の実施例の活性炭パックの斜視図FIG. 7 is a perspective view of an activated carbon pack according to a third embodiment of the present invention.
【図8】同活性炭パックの断面図FIG. 8 is a sectional view of the activated carbon pack.
7 沸騰管 8 局部加熱室 15・39・52 活性炭 7 Boiling tube 8 Local heating chamber 15.39.52 Activated carbon
───────────────────────────────────────────────────── フロントページの続き (72)発明者 浦田 隆行 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Urata 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (3)
のフェノール樹脂を原料とした活性炭を通過あるいは循
環するようにした、あるいは前記水に前記活性炭を浸漬
するようにした飲用水の浄化方法。1. A method for purifying drinking water, wherein water to be supplied is made to pass or circulate activated carbon made of a phenol resin having a molecular weight of 3000 or more as a raw material, or the activated carbon is immersed in the water.
ィングした活性炭を通過あるいは循環するようにした、
あるいは前記水に前記活性炭を浸漬するようにした飲用
水の浄化方法。2. Water for drinking is passed or circulated through activated carbon coated with a thin film of resin,
Alternatively, a method for purifying drinking water in which the activated carbon is immersed in the water.
け、前記局部加熱室で沸騰した水が上昇し、前記局部加
熱室以外の所に戻り混合されるまでの循環径路中に、活
性炭を設けた飲用水の浄化方法。3. A local heating chamber is provided in a part of the boiling water container, and the activated carbon is added in a circulation path until the water boiled in the local heating chamber rises and returns to a place other than the local heating chamber to be mixed. A method for purifying drinking water.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP3213475A JP2677060B2 (en) | 1991-08-26 | 1991-08-26 | How to purify drinking water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3213475A JP2677060B2 (en) | 1991-08-26 | 1991-08-26 | How to purify drinking water |
Publications (2)
Publication Number | Publication Date |
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JPH0550059A true JPH0550059A (en) | 1993-03-02 |
JP2677060B2 JP2677060B2 (en) | 1997-11-17 |
Family
ID=16639820
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JP3213475A Expired - Fee Related JP2677060B2 (en) | 1991-08-26 | 1991-08-26 | How to purify drinking water |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006062954A (en) * | 2004-07-30 | 2006-03-09 | Nard Inst Ltd | Method of manufacturing activated carbon |
JP2008502477A (en) * | 2004-06-10 | 2008-01-31 | ウェルネス エンタープライゼス エルエルシー | Portable purifier for potable liquid |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5117190A (en) * | 1974-08-01 | 1976-02-10 | Sumitomo Durez Co | |
JPS6142393A (en) * | 1984-08-01 | 1986-02-28 | Toho Rayon Co Ltd | Water purification unit |
JPS63201008A (en) * | 1987-02-12 | 1988-08-19 | Kanebo Ltd | Production of carbon for molecular sieve |
JPH02233140A (en) * | 1989-03-06 | 1990-09-14 | Kuraray Chem Corp | Adsorbing material |
JPH03187910A (en) * | 1989-12-18 | 1991-08-15 | Gun Ei Chem Ind Co Ltd | Production of powdery or granular activated carbon |
-
1991
- 1991-08-26 JP JP3213475A patent/JP2677060B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5117190A (en) * | 1974-08-01 | 1976-02-10 | Sumitomo Durez Co | |
JPS6142393A (en) * | 1984-08-01 | 1986-02-28 | Toho Rayon Co Ltd | Water purification unit |
JPS63201008A (en) * | 1987-02-12 | 1988-08-19 | Kanebo Ltd | Production of carbon for molecular sieve |
JPH02233140A (en) * | 1989-03-06 | 1990-09-14 | Kuraray Chem Corp | Adsorbing material |
JPH03187910A (en) * | 1989-12-18 | 1991-08-15 | Gun Ei Chem Ind Co Ltd | Production of powdery or granular activated carbon |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008502477A (en) * | 2004-06-10 | 2008-01-31 | ウェルネス エンタープライゼス エルエルシー | Portable purifier for potable liquid |
JP2006062954A (en) * | 2004-07-30 | 2006-03-09 | Nard Inst Ltd | Method of manufacturing activated carbon |
Also Published As
Publication number | Publication date |
---|---|
JP2677060B2 (en) | 1997-11-17 |
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