JP2581662Y2 - Tap water improvement device - Google Patents
Tap water improvement deviceInfo
- Publication number
- JP2581662Y2 JP2581662Y2 JP2627992U JP2627992U JP2581662Y2 JP 2581662 Y2 JP2581662 Y2 JP 2581662Y2 JP 2627992 U JP2627992 U JP 2627992U JP 2627992 U JP2627992 U JP 2627992U JP 2581662 Y2 JP2581662 Y2 JP 2581662Y2
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- slaked lime
- tank
- lime aqueous
- 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.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本考案は、消石灰水溶液を用いて
水道水のランゲリア指数およびｐＨを大にして、その水
質を改善する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for improving tap water quality by increasing the Langelia index and pH of tap water using slaked lime aqueous solution.
【０００２】なお、ランゲリア指数とは、水道水の赤水
防止指数として、アメリカのランゲリア氏によって提案
された次式により表される指数（ランゲリア指数、Ｌ
Ｉ）である。[0002] The Langeria index is an index (Langeria index, L) expressed by the following formula proposed by Mr. Langeria of the United States as a red water prevention index for tap water.
I).
【０００３】 ここに、 ｐＨ……………水の実際のｐＨ値 ｐＨｓ…………理論上のｐＨ値 log[Ca2+] ……カルシウムイオン濃度の対数 log[A]…………総アルカリ度の対数 ｓ………………補正値[0003] Where pH is the actual pH value of water pHs is the theoretical pH value log [Ca2 + ] is the logarithm of the calcium ion concentration log [A] is the total alkalinity Logarithm s …………… Correction value
【０００４】[0004]
【従来の技術】ランゲリア指数の低い腐食性の水道水に
消石灰水溶液を注入して、非腐食性の水に改善する装置
としては、特開平２−１９４８９３号公報に図２に示す
ような装置が開示されている。この装置は消石灰水溶液
を得る消石灰溶解槽21、処理する水道水に所定量の炭酸
ガスを溶解させ遊離炭酸含有水を得る炭酸ガス溶解槽2
2、遊離炭酸含有水に消石灰溶液を注入する消石灰注入
部および遊離炭酸含有水のｐＨ若しくは消石灰注入後の
水のｐＨ検出器23と連動した消石灰注入手段24とよりな
り、処理する水中の炭酸水素カルシウムを生成させてラ
ンゲリア指数を大きくし、水質を改善する。2. Description of the Related Art As an apparatus for injecting slaked lime aqueous solution into corrosive tap water having a low Langeria index to improve non-corrosive water, an apparatus as shown in FIG. It has been disclosed. This apparatus comprises a slaked lime dissolving tank 21 for obtaining an aqueous slaked lime solution, and a carbon dioxide dissolving tank 2 for dissolving a predetermined amount of carbon dioxide in the tap water to be treated to obtain water containing free carbon dioxide.
2, slaked lime injection means for injecting slaked lime solution into free carbonated water and slaked lime injection means 24 interlocked with pH detector 23 for free carbonated water or water after slaked lime injection, and hydrogen bicarbonate in the water to be treated Generates calcium to increase the Langelia index and improve water quality.
【０００５】なお、水質改善の望ましい水は、ランゲリ
ア指数が−０．５〜＋０．５で、かつ、ｐＨが水道水の
水質基準に定められる上限に近い８．０〜８．５であ
る。It is to be noted that water desirably improved in water quality has a Langeria index of -0.5 to +0.5 and a pH of 8.0 to 8.5 which is close to an upper limit defined in tap water quality standards.
【０００６】[0006]
【考案が解決しようとする課題】この特開平２−１９４
８９３号公報に開示された装置のように、処理すべき水
道水（以下、「原水」と略記する。）の全量を対象に炭
酸ガスを溶解させた後、消石灰水溶液を注入する場合に
は処理のための装置、特に炭酸ガス溶解槽が大型になる
ことが避けられない。またこの装置では、消石灰水溶液
をその製造槽から直接処理槽に注入するため、炭酸水素
カルシウムの生成のためとｐＨ調整のためとに使用量を
調整しながら分岐使用することが困難であった。[Problems to be solved by the invention]
In the case of injecting an aqueous slaked lime solution after dissolving carbon dioxide gas in the entire amount of tap water to be treated (hereinafter abbreviated as “raw water”) as in the apparatus disclosed in Japanese Patent No. 893 It is inevitable that the apparatus for the above, especially the carbon dioxide gas dissolving tank, becomes large. Further, in this apparatus, since the slaked lime aqueous solution is directly injected from the production tank into the treatment tank, it is difficult to use the slaked lime while adjusting the amount of calcium bicarbonate used and for adjusting the pH.
【０００７】本考案は上記課題を解決するためになされ
たものであって、消石灰水溶液を炭酸水素カルシウム水
溶液の生成とｐＨ調整とのために併用しながら処理を実
施する、小型化された水道水の改善装置を提供すること
を目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has been made to reduce the size of tap water by performing a treatment while simultaneously using a slaked lime aqueous solution for generating a calcium hydrogen carbonate aqueous solution and adjusting pH. It is an object of the present invention to provide a device for improving the above.
【０００８】[0008]
【課題を解決するための手段】本考案は、消石灰水溶液
を製造した後一旦貯蔵し、しかる後それを取り出してそ
の消石灰水溶液および炭酸ガスを用いて略飽和炭酸水素
カルシウム水溶液を製造し、その水溶液と、消石灰水溶
液とを原水に注入する構成としたことにより、水道水の
改善装置を小型化したものである。According to the present invention, an aqueous solution of slaked lime is temporarily stored after it has been produced, and then it is taken out and a substantially saturated aqueous solution of calcium hydrogen carbonate is produced using the slaked lime aqueous solution and carbon dioxide gas. And a configuration in which the slaked lime aqueous solution is injected into the raw water, thereby reducing the size of the tap water improvement device.
【０００９】即ち、本考案の水道水の改善装置は、消石
灰水溶液製造槽、該槽に接続しそこからの消石灰水溶液
を貯蔵する消石灰水溶液貯槽、および水道水が導入され
それを処理する処理槽を具備し、消石灰水溶液貯槽に
は、この中の消石灰水溶液を、直接処理槽に注入する管
路と、処理槽に至る途中で炭酸ガス含有水または炭酸ガ
スと混合反応させて炭酸水素カルシウム水溶液に転換さ
せて注入する管路とを設けたことを特徴とする。That is, the apparatus for improving tap water of the present invention includes a slaked lime aqueous solution production tank, a slaked lime aqueous solution storage tank connected to the tank for storing slaked lime aqueous solution, and a treatment tank for introducing and treating tap water. In the slaked lime aqueous solution storage tank, the slaked lime aqueous solution in the tank is directly injected into the treatment tank, and on the way to the treatment tank, mixed and reacted with carbon dioxide-containing water or carbon dioxide gas to convert it to calcium hydrogen carbonate aqueous solution. And a pipe line for injection.
【００１０】[0010]
【実施例】以下、図１により本考案を具体的に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to FIG.
【００１１】図１は本考案の装置の一実施例の概略図で
ある。この装置は、消石灰水溶液製造槽１と、これに接
続する消石灰水溶液貯槽２と、炭酸ガス加圧溶解器３
と、これら両者（消石灰水溶液貯槽２及び炭酸ガス加圧
溶解器３）に接続し、消石灰水溶液と遊離炭酸含有水を
混合する混合器４と、混合器４とは管５ｂを介してまた
消石灰水溶液貯槽２とは配管６を介して接続する処理槽
７とを備える。FIG. 1 is a schematic view of an embodiment of the apparatus of the present invention. This apparatus comprises a slaked lime aqueous solution production tank 1, a slaked lime aqueous solution storage tank 2 connected thereto,
And a mixer 4 connected to both of them (the slaked lime aqueous solution storage tank 2 and the carbon dioxide gas pressurizing dissolver 3) to mix the slaked lime aqueous solution and the free carbonic acid-containing water, and the mixer 4 is connected to the slaked lime aqueous solution via the pipe 5b. The storage tank 2 includes a processing tank 7 connected via a pipe 6.
【００１２】消石灰水溶液貯槽２と混合器４との接続は
管５ａによっている。その他の上記接続を行うための手
段、また、原水を消石灰水溶液製造槽１、炭酸ガス加圧
溶解器３及び処理槽７に供給する手段としても、配管
（番号を示さず）が使用されている。The connection between the slaked lime aqueous solution storage tank 2 and the mixer 4 is made by a pipe 5a. Piping (not shown) is also used as other means for making the above connection, and also as a means for supplying raw water to the slaked lime aqueous solution production tank 1, the carbon dioxide gas pressurized dissolver 3 and the treatment tank 7. .
【００１３】消石灰水溶液貯槽２には、２つの送液ポン
プ（図示せず）が備えられ、それぞれは処理槽７へ至る
２カ所の経路（つまり配管５ａ、混合器４及び配管５
ｂ；配管６）を介して、処理槽７に送水可能である。送
液ポンプとしては、水中ポンプが好ましい。The slaked lime aqueous solution storage tank 2 is provided with two liquid feed pumps (not shown), each of which has two paths (ie, a pipe 5a, a mixer 4 and a pipe 5) to a processing tank 7.
b; Water can be sent to the treatment tank 7 via the pipe 6). As the liquid sending pump, a submersible pump is preferable.
【００１４】消石灰水溶液製造槽１は、内部に攪拌機を
有し、予め消石灰が投入してある。この槽下部から原水
を給水しながら、撹拌下に消石灰を溶解させて消石灰略
飽和水溶液を製造する。消石灰水溶液は一旦貯槽２に貯
める。貯槽２が空にならないように消石灰水溶液製造槽
１より連続的にもしくは断続的に消石灰水溶液を供給す
る。貯槽２からは、２つのうちの一方の送液ポンプによ
って混合器４に消石灰水溶液を送る。The slaked lime aqueous solution production tank 1 has a stirrer inside, and slaked lime is charged in advance. While supplying raw water from the lower part of the tank, slaked lime is dissolved under stirring to produce a slaked lime substantially saturated aqueous solution. The slaked lime aqueous solution is temporarily stored in the storage tank 2. A slaked lime aqueous solution is supplied continuously or intermittently from the slaked lime aqueous solution producing tank 1 so that the storage tank 2 does not become empty. From the storage tank 2, the slaked lime aqueous solution is sent to the mixer 4 by one of the two liquid sending pumps.
【００１５】一方、炭酸ガス加圧溶解器３で原水の一部
に炭酸ガスを溶解させて遊離炭酸含有水とする。炭酸ガ
ス加圧溶解器３としては、０．５kg／cm2 以上の加圧状
態が得られるラインミキサーが好ましい。得られた遊離
炭酸含有水を、配管５ａより送られる消石灰水溶液とと
もに混合器４に送り、混合器４内で炭酸水素カルシウム
水溶液とし、それを、配管５ｂを通して処理槽７に注入
する。処理槽７には、消石灰水溶液および遊離炭酸含有
水の製造に用いた原水の残部で処理すべき量の大部分で
ある原水が連続的に給水されている。On the other hand, the carbon dioxide gas is dissolved in a part of the raw water by the carbon dioxide gas pressurizing and dissolving device 3 to obtain water containing free carbon dioxide. As the carbon dioxide gas pressure dissolver 3, a line mixer capable of obtaining a pressurized state of 0.5 kg / cm 2 or more is preferable. The obtained water containing free carbonic acid is sent to the mixer 4 together with the slaked lime aqueous solution sent from the pipe 5a, and is converted into an aqueous solution of calcium hydrogencarbonate in the mixer 4, and is injected into the treatment tank 7 through the pipe 5b. The treatment tank 7 is continuously supplied with raw water, which is the majority of the amount to be treated in the remaining portion of the raw water used for producing the slaked lime aqueous solution and the water containing free carbonic acid.
【００１６】炭酸水素カルシウム水溶液の注入量は、原
水のランゲリア指数、処理後の所望ランゲリア指数、注
入する炭酸水素カルシウム水溶液の濃度により異なる
が、処理後の水のカルシウム硬度が、４０〜８０ ppmに
なる量である。炭酸水素カルシウム水溶液の注入のみで
は、ランゲリア指数の改善に必要なカルシウム硬度は高
くなるが、水道管の腐食防止の上から重要なｐＨが充分
改善されない。The amount of the aqueous solution of calcium bicarbonate to be injected varies depending on the Langerian index of the raw water, the desired Langeria index after the treatment, and the concentration of the aqueous calcium hydrogen carbonate solution to be injected. Amount. Injection of the aqueous solution of calcium bicarbonate alone increases the calcium hardness required for improving the Langeria index, but does not sufficiently improve the important pH from the viewpoint of preventing water pipe corrosion.
【００１７】そこで、ｐＨ調整のための消石灰水溶液
を、消石灰水溶液貯槽２から、その貯槽２に付設した他
方の送液ポンプによって、配管６を介して処理槽７に送
る。かくして、炭酸水素カルシウム水溶液の注入と相俟
って水道水の水質が改善される。Therefore, the slaked lime aqueous solution for pH adjustment is sent from the slaked lime aqueous solution storage tank 2 to the treatment tank 7 via the pipe 6 by the other liquid feed pump attached to the storage tank 2. Thus, the quality of tap water is improved in combination with the injection of the aqueous calcium hydrogen carbonate solution.
【００１８】消石灰の水溶液製造槽で得られる消石灰水
溶液はその濃度が１５００〜１８００ ppmであり、また
遊離炭酸含有水も加圧下に炭酸ガスを溶解させることに
より遊離炭酸濃度１４００〜１８００ ppmで得ることが
でき、配管５ｂより注入する炭酸水素カルシウム水溶液
も１５００〜１８００ ppmの濃度である。即ち、炭酸ガ
スを溶解させる原水の量を処理すべき量の約３０分の１
程度でよく（前々段落参照）、しかも加圧状態で炭酸ガ
スを溶解させるため、その装置は著しく小型化し得る。The slaked lime aqueous solution obtained in the slaked lime aqueous solution production tank has a concentration of 1500 to 1800 ppm, and free carbonic acid-containing water is obtained at a free carbonic acid concentration of 1400 to 1800 ppm by dissolving carbon dioxide under pressure. The aqueous solution of calcium hydrogen carbonate injected from the pipe 5b also has a concentration of 1500 to 1800 ppm. That is, the amount of raw water for dissolving carbon dioxide gas is about 1/30 of the amount to be treated.
Since the carbon dioxide gas is dissolved in a pressurized state, the apparatus can be significantly reduced in size.
【００１９】[0019]
【考案の効果】本考案のように、遊離炭酸含有水を原水
処理槽に注入する前に消石灰水溶液と混合して炭酸水素
カルシウム水溶液として注入する構成としたことにより
炭酸ガス溶解設備が小型化される。また消石灰水溶液貯
槽を設けたことにより、炭酸水素カルシウム水溶液の調
整のための消石灰水溶液およびｐＨ調整のための消石灰
水溶液の分岐使用および流量調節が容易である。[Effect of the Invention] As described in the present invention, before the water containing free carbonic acid is injected into the raw water treatment tank, it is mixed with the slaked lime aqueous solution and injected as an aqueous solution of calcium hydrogencarbonate. You. In addition, the provision of the slaked lime aqueous solution storage tank facilitates the branched use and flow control of the slaked lime aqueous solution for adjusting the calcium bicarbonate aqueous solution and the slaked lime aqueous solution for pH adjustment.
【図１】本考案に係わる水道水の改善装置の概略図であ
る。FIG. 1 is a schematic view of an apparatus for improving tap water according to the present invention.
【図２】特開平２−１９４８９３号に示される装置であ
る。FIG. 2 shows an apparatus disclosed in Japanese Patent Application Laid-Open No. 2-194893.
１ 消石灰水溶液製造槽 ２ 消石灰水溶液貯槽 ３ 炭酸ガス加圧溶解器 ４ 混合器 ５ａ、５ｂ、６ 配管 ７ 処理槽 1 Slaked lime aqueous solution production tank 2 Slaked lime aqueous solution storage tank 3 Carbon dioxide gas pressure dissolver 4 Mixer 5a, 5b, 6 Piping 7 Treatment tank
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０２Ｆ 1/68 ５２０ Ｃ０２Ｆ 1/68 ５２０Ｃ ５２０Ｄ ５３０ ５３０Ａ (56)参考文献 特開 平５−293476（ＪＰ，Ａ) 特開 平５−96286（ＪＰ，Ａ) 特開 平５−23675（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) C02F 1/66 C02F 1/68──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification symbol FI C02F 1/68 520 C02F 1/68 520C 520D 530 530A 5-96286 (JP, A) JP-A-5-23675 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) C02F 1/66 C02F 1/68
Claims (1)
からの消石灰水溶液を貯蔵する消石灰水溶液貯槽、およ
び水道水が導入されそれを処理する処理槽を具備し、消
石灰水溶液貯槽には、この中の消石灰水溶液を、直接処
理槽に注入する管路と、処理槽に至る途中で炭酸ガス含
有水または炭酸ガスと混合反応させて炭酸水素カルシウ
ム水溶液に転換させて注入する管路とを設けたことを特
徴とする水道水の改善装置。1. A slaked lime aqueous solution production tank, a slaked lime aqueous solution storage tank connected to the tank for storing slaked lime aqueous solution, and a treatment tank for introducing and treating tap water, the slaked lime aqueous solution storage tank includes: A pipe line for directly injecting the slaked lime aqueous solution into the treatment tank, and a pipe line for mixing and reacting with carbon dioxide-containing water or carbon dioxide gas on the way to the treatment tank to convert it into an aqueous solution of calcium hydrogen carbonate and inject it. An apparatus for improving tap water, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2627992U JP2581662Y2 (en) | 1992-04-22 | 1992-04-22 | Tap water improvement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2627992U JP2581662Y2 (en) | 1992-04-22 | 1992-04-22 | Tap water improvement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0585494U JPH0585494U (en) | 1993-11-19 |
| JP2581662Y2 true JP2581662Y2 (en) | 1998-09-24 |
Family
ID=12188850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2627992U Expired - Lifetime JP2581662Y2 (en) | 1992-04-22 | 1992-04-22 | Tap water improvement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2581662Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1190458A (en) * | 1997-09-18 | 1999-04-06 | Matsushita Electric Ind Co Ltd | Drinking water-producing apparatus |
| JP4210462B2 (en) * | 2002-03-29 | 2009-01-21 | 株式会社ディスコ | Cutting equipment |
| KR101457475B1 (en) * | 2007-12-26 | 2014-11-04 | 재단법인 포항산업과학연구원 | Apparatus of the corrosive water with ld slag |
| JP2010137224A (en) * | 2010-02-12 | 2010-06-24 | Kureha Engineering Co Ltd | Method for cleaning water |
-
1992
- 1992-04-22 JP JP2627992U patent/JP2581662Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0585494U (en) | 1993-11-19 |
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