JPH03146190A - Soft water manufacturing device - Google Patents
Soft water manufacturing deviceInfo
- Publication number
- JPH03146190A JPH03146190A JP28405389A JP28405389A JPH03146190A JP H03146190 A JPH03146190 A JP H03146190A JP 28405389 A JP28405389 A JP 28405389A JP 28405389 A JP28405389 A JP 28405389A JP H03146190 A JPH03146190 A JP H03146190A
- Authority
- JP
- Japan
- Prior art keywords
- water
- blow
- boiler
- alkali metal
- chamber
- 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
- 239000008234 soft water Substances 0.000 title abstract description 22
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 238000005341 cation exchange Methods 0.000 claims abstract description 13
- 230000001172 regenerating effect Effects 0.000 claims description 11
- 229910001413 alkali metal ion Inorganic materials 0.000 abstract description 14
- VAOCPAMSLUNLGC-UHFFFAOYSA-N metronidazole Chemical compound CC1=NC=C([N+]([O-])=O)N1CCO VAOCPAMSLUNLGC-UHFFFAOYSA-N 0.000 abstract description 7
- 238000005342 ion exchange Methods 0.000 abstract description 4
- 150000002500 ions Chemical class 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 3
- 239000003513 alkali Substances 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 239000012492 regenerant Substances 0.000 description 17
- 230000008929 regeneration Effects 0.000 description 12
- 238000011069 regeneration method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 5
- 239000003729 cation exchange resin Substances 0.000 description 5
- 238000011034 membrane dialysis Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はイオン交換膜を用いた軟水給水ボイラ用の軟水
製造装置、特にドナン膜透析装置を用いた軟水製造装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water softening device for a soft water feed boiler using an ion exchange membrane, and particularly to a water softening device using a Donnan membrane dialysis device.
従来、軟水給水ボイラ用の軟水製造装置として。 Conventionally, as a water softening device for soft water supply boilers.
Ｎａ形カチオン交換樹脂により原水中のＣａ２＋やＨｇ
２ ＋などの硬度成分を捕捉して軟水化する軟水製造
装置が使用されている。Ca2+ and Hg in raw water are removed using Na type cation exchange resin.
A water softening device is used that softens water by capturing hardness components such as 2+.
このような軟水製造装置は、Ｎａ形カチオン交換樹脂中
のＮａ＋と原水中のＣａ”＋やＭ 、２＋をイオン交換
して軟水を製造しているため、カチオン交換樹脂がＣａ
”＋やＭ ｇ ２４−で隼和すると、軟化を一時中断し
て、例えばＮａＣ１溶液などの再生剤を供給して、カチ
オン交換樹脂をＮａ形に再生する作業が必要である。Such water softening equipment produces soft water by ion-exchanging Na+ in the Na type cation exchange resin with Ca''+, M, and 2+ in the raw water, so the cation exchange resin
When the cation exchange resin is oxidized with ``+'' or Mg 24-, it is necessary to temporarily interrupt the softening and supply a regenerating agent such as NaCl solution to regenerate the cation exchange resin into the Na form.
この再生作業は手間がかかり、自動再生を行う場合でも
再生剤の補給が必要であり、再生剤の入れ忘れなどによ
るトラブルも発生する可能性がある。また再生作業によ
り軟化工程が中断するため、連続して軟水を製造できず
、ボイラに連続して軟水を供給するためには、再生作業
の間に供給するための軟水を貯留しておくタンクが必要
となる。This regeneration work is time-consuming, and even when automatic regeneration is performed, it is necessary to replenish the regenerant, and troubles such as forgetting to add the regenerant may occur. In addition, since the softening process is interrupted by the regeneration work, it is not possible to continuously produce soft water, and in order to continuously supply soft water to the boiler, a tank is required to store the soft water to be supplied during the regeneration work. It becomes necessary.
さらに再生剤として特別の薬剤が必要である。Additionally, special chemicals are required as regenerants.
本発明の目的は、上記問題点を解決するもので、軟水を
連続的に製造でき、軟化工程を中断して行う特別の再生
工程、ならびに特別の再生薬剤が不要で、製造コストを
低減できる軟水製造装置を提供することを目的とする。The purpose of the present invention is to solve the above-mentioned problems, and to provide soft water that can continuously produce soft water, does not require a special regeneration process that interrupts the softening process, or requires special regeneration chemicals, and can reduce production costs. The purpose is to provide manufacturing equipment.
本発明は、カチオン交換膜により仕切られた被処理液室
および再生剤室と、原水を前記被処理液室に導く流路と
、被処理液室から軟化水をボイラに給水する流路と、ボ
イラからブロー水を前記再生剤室に導く流路とを有して
いることを特徴とする軟水製造装置である。The present invention comprises a liquid chamber to be treated and a regenerating agent chamber partitioned by a cation exchange membrane, a flow path for guiding raw water to the liquid chamber for treatment, a flow path for supplying softened water from the liquid chamber to the boiler, The water softening apparatus is characterized in that it has a flow path that guides blow water from a boiler to the regenerant chamber.
本発明で使用する原水としては、硬度成分を含む水道水
、工業用水、河川水、井戸水など、一般にボイラに供給
されている硬度成分を含む水が使用できる。As the raw water used in the present invention, water containing hardness components that is generally supplied to a boiler, such as tap water, industrial water, river water, well water, etc., containing hardness components can be used.
本発明で使用する再生剤は、ボイラ水の濃度を一定に保
つためにボイラ稼動中にブローされるブロー水である。The regenerant used in the present invention is blown water that is blown during boiler operation in order to keep the concentration of boiler water constant.
このブロー水はブロー率によって異なるが、通常、原水
の２０倍程度のアルカリ金属イオン濃度を有している。This blow water usually has an alkali metal ion concentration about 20 times that of the raw water, although it varies depending on the blow rate.
本発明では、ブロー水のアルカリ金属イオンと原水中の
硬度成分が、カチオン交換膜を介してドナン膜透析でき
るような濃度勾配を有するブロー水を使用するが、下記
（１）式を満たすものが☆ｆましい。In the present invention, blown water is used that has a concentration gradient such that the alkali metal ions in the blown water and hardness components in the raw water can be subjected to Donnan membrane dialysis via a cation exchange membrane. ☆It's adorable.
原水の全カチオン濃度 ブロー水のアルカリ金属イ
オン濃度・・・（１）
〔作 用〕
本発明の軟水製造装置では、ＣａＺ ＋やＭ ｇ２＋な
どの硬度成分を含む原水を被処理液室に供給し、アルカ
リ金属イオンを高濃度で含むボイラのブロー水を再生剤
室に供給し、被処理液室と再生剤室を仕切るカチオン交
換膜を介して、゛ドナン膜透析を行う。このとき原水中
の硬度成分は再生剤室側に、またブロー水中のアルカリ
金属イオンは被処理液室側に透析され、原水が軟化され
る。そして軟化水を給水としてボイラに供給し、その濃
縮されてアルカリ金属イオン濃度が増しているブロー水
を軟水製造装置の再生剤に導き、再生剤として使用する
。Total cation concentration of raw water Alkali metal ion concentration of blown water...(1) [Function] In the water softening apparatus of the present invention, raw water containing hardness components such as CaZ + and M g2+ is supplied to the liquid chamber to be treated. Boiler blow water containing a high concentration of alkali metal ions is supplied to the regenerant chamber, and Donnan membrane dialysis is performed via a cation exchange membrane that separates the treated liquid chamber from the regenerant chamber. At this time, the hardness components in the raw water are dialyzed to the regenerating agent chamber side, and the alkali metal ions in the blow water are dialyzed to the treated liquid chamber side, so that the raw water is softened. Then, the softened water is supplied to the boiler as feed water, and the concentrated blow water, which has an increased concentration of alkali metal ions, is led to the regenerating agent of the water softening device and used as the regenerating agent.
以下、本発明の実施例を図面により説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は実施例の軟水製造装置の系統図、第２図は軟水
製造装置の分解斜視図である。FIG. 1 is a system diagram of a water softening apparatus according to an embodiment, and FIG. 2 is an exploded perspective view of the water softening apparatus.
図において、１は軟水製造装置、２はボイラである。軟
水製造装置１は被処理液室３と再生剤室４がカチオン交
換膜５により仕切られている。この被処理液室３および
再生剤室４はスペーサ５ａ、５ｂによって形成され、両
端部に端板６ａ、 ６ｂを配置してボルト７およびナツ
ト８により締結されている。第１図および第２図では理
解しやすいように、被処理液室３と再生剤室４のユニッ
トが１個だけ図示されているが、実際はこれらの複数の
ユニットが多数値べて積層されている。In the figure, 1 is a water softening device and 2 is a boiler. In the water softening apparatus 1, a treated liquid chamber 3 and a regenerant chamber 4 are separated by a cation exchange membrane 5. The liquid chamber 3 to be treated and the regenerating agent chamber 4 are formed by spacers 5a and 5b, and end plates 6a and 6b are disposed at both ends, and are fastened with bolts 7 and nuts 8. For ease of understanding, only one unit of the liquid chamber 3 and the regenerant chamber 4 is shown in FIG. 1 and FIG. 2, but in reality, a plurality of these units are stacked together. There is.
各スペーサ５ａ、５ｂには流入孔９ａ、 ９ｂおよび流
出孔１０ａ、 １０ｂが設けられている。被処理液室３
の流入孔９ａは原水管１１に連絡し、被処理液室３の流
出孔１０ａは給水管１２によりボイラ２に連絡している
。Each spacer 5a, 5b is provided with an inflow hole 9a, 9b and an outflow hole 10a, 10b. Processed liquid chamber 3
The inflow hole 9a is connected to a raw water pipe 11, and the outflow hole 10a of the liquid chamber 3 is connected to the boiler 2 through a water supply pipe 12.
また再生剤室４の流入孔９ｂはブロー水管１３によりボ
イラ２に連絡し、再生剤室４の流出孔１０ｂは排水管１
４に連絡している。被処理液室３と再生剤室４は併流式
となっているが、向流式あるいは交差流式でもよい。Further, the inflow hole 9b of the regenerant chamber 4 is connected to the boiler 2 through a blow water pipe 13, and the outflow hole 10b of the regenerant chamber 4 is connected to the drain pipe 1.
I am contacting 4. The liquid chamber 3 to be treated and the regenerating agent chamber 4 are of a co-current type, but may be of a counter-current type or a cross-flow type.
ボイラ２は給水管１２から軟水が供給され、蒸気管１５
から蒸気が取出され、その一部は負荷１６から復水とし
て、復水管１７を経て給水管１２の軟水とともにボイラ
２に循環するようになっている。またボイラ２内の水の
濃度を一定に保つために、ボイラ水の一部がブロー水と
して取出され、ブロー水管′１３から軟水製造装置１の
再生剤室４に再生剤として供給されるようになっている
。Boiler 2 is supplied with soft water from water supply pipe 12 and steam pipe 15.
Steam is taken out from the load 16, and a part of it is circulated as condensate from the load 16 through the condensate pipe 17 to the boiler 2 together with the soft water in the water supply pipe 12. Also, in order to keep the concentration of water in the boiler 2 constant, a part of the boiler water is taken out as blow water and is supplied as a regenerant to the regenerant chamber 4 of the water softening device 1 from the blow water pipe '13. It has become.
このような軟水製造装置では、原水管１１より被処理液
室３にＣａ”＋やＭｇ ２＋などの硬度成分を含む原水
を供給し、ブロー水管１３より再生剤室４にアルカリ金
属イオンを多く含むボイラ２のブロー水を供給して軟化
を行う。このときブロー水のアルカリ金属イオン濃度が
高いため、カチオン交換膜はアルカリ金属イオン（Ｎａ
）型になるが、原水中の硬度成分の方が選択性が高いた
め、イオン交換が行われる。そして硬度成分を交換した
カチオン交換膜が、ブロー水で再生されてアルカリ金属
イオン型になり、結果的に各イオンの濃度勾配をドライ
ビングフォースとしてドナン膜透析が行われる。In such a water softening device, raw water containing hard components such as Ca''+ and Mg 2+ is supplied from the raw water pipe 11 to the liquid chamber 3 to be treated, and raw water containing a large amount of alkali metal ions is supplied from the blow water pipe 13 to the regenerant chamber 4. Softening is carried out by supplying blow water from boiler 2.At this time, since the concentration of alkali metal ions in the blow water is high, the cation exchange membrane absorbs alkali metal ions (Na
) type, but since the hardness component in the raw water has higher selectivity, ion exchange is performed. The cation exchange membrane, which has had its hardness components exchanged, is regenerated with blown water and becomes an alkali metal ion type, and as a result, Donnan membrane dialysis is performed using the concentration gradient of each ion as a driving force.
このため原水中の硬度成分は再生剤室４側に、またブロ
ー水中のアルカリ金属イオンは被処理液室３側にそれぞ
れ透析され、その結果原水が軟化される。そして軟水が
給水管１２からボイラ２に供給されて蒸気となり、ボイ
ラ２のブロー水はブロー水管１３から再生剤室４に供給
され、再生剤として使用され、排水管１４から排出され
る。Therefore, the hard components in the raw water are dialyzed to the regenerating agent chamber 4 side, and the alkali metal ions in the blow water are dialyzed to the treated liquid chamber 3 side, and as a result, the raw water is softened. Then, the soft water is supplied from the water supply pipe 12 to the boiler 2 and turned into steam, and the blow water from the boiler 2 is supplied from the blow water pipe 13 to the regenerant chamber 4, used as a regenerant, and discharged from the drain pipe 14.
このような軟水製造装置１では、イオン交換（軟化）と
再生が並行して連続的に行われるため。In such a water softening apparatus 1, ion exchange (softening) and regeneration are performed continuously in parallel.
連続して排出されるボイラ２のブロー水が、連続して再
生剤に利用でき、再生のための軟化工程の中断や、軟水
またはブロー水貯留槽なども必要ではない。このため軟
化工程を中断して行う特別の再生工程や特別の再生薬剤
が不要となり、軟水を連続的に低コストで製造すること
ができる。Blow water from the boiler 2 that is continuously discharged can be continuously used as a regenerant, and there is no need to interrupt the softening process for regeneration, and there is no need for a soft water or blow water storage tank. This eliminates the need for a special regeneration process that interrupts the softening process or a special regeneration agent, making it possible to continuously produce soft water at low cost.
次に試験例について説明する。Next, test examples will be explained.
試験例
第１図および第２図に示すような軟水製造装置を用い、
カチオン交換膜に旭硝子（株）製の強酸性カチオン交換
膜セレミオンＣＭＶ （商標）を使用し、下記の条件で
運転して軟水を製造した。Test Example Using a water softening device as shown in Figures 1 and 2,
A strongly acidic cation exchange membrane Selemion CMV (trademark) manufactured by Asahi Glass Co., Ltd. was used as the cation exchange membrane and operated under the following conditions to produce soft water.
原 水・・・厚木市水（水質を表１に示す）ブロー水
・・Ｎａ濃度： ０．０２７Ｎ（ブロー率約５％）通液
速度・・・原 水： １．４ｍＱ／ｍｉｎ軟化剤： ０
．０７ｍ１２／ ｍｉｎ
通液方法・・・向流
膜面積・・・１１４ｄ
得られた軟水のカチオン（Ｎａ、 Ｋ、 Ｍｇ、 Ｃａ
）濃度を原子吸光法にて測定した。なお軟水のサンプリ
ングは、負荷した原水中のｃａ２＋、Ｍｇ２＋の当撤の
総和がカチオン交換膜の交換容量を上回った後に行った
・
軟水の分析結果は表１のとおりであり、一般の軟水給水
ボイラの目標である硬度成分１ｍｇ／Ｑ（ＣａＣＯＪと
して）を大きく下回る軟水が得られた。Raw water: Atsugi city water (water quality is shown in Table 1) Blow water: Na concentration: 0.027N (blow rate approximately 5%) Liquid flow rate: Raw water: 1.4 mQ/min Softener: 0
．． 07m12/min Liquid passing method...Countercurrent membrane area...114d Cations (Na, K, Mg, Ca) of the obtained soft water
) The concentration was measured by atomic absorption method. The soft water sampling was conducted after the sum total of Ca2+ and Mg2+ in the loaded raw water exceeded the exchange capacity of the cation exchange membrane.The analysis results of the soft water are shown in Table 1, and the results are similar to that of a general soft water feed boiler. Soft water with a hardness component of 1 mg/Q (as CaCOJ), which is the target, was obtained.
表Ｌ ｍｙ、ＩＱ （ＣａＣＯｌとし
て）〔発明の効果〕
本発明ではボイラのブロー水を再生剤として用いて原水
をドナン膜透析するので、軟水を連続的に製造でき、軟
化を中断して行う特別の再生工程や特別の再生薬剤が不
要で、製造コストが低減できる軟水製造装置が得られる
。Table L my, IQ (as CaCOl) [Effects of the invention] In the present invention, raw water is subjected to Donnan membrane dialysis using boiler blow water as a regenerating agent, so soft water can be produced continuously, and special A water softening device that does not require a regeneration process or special regeneration chemicals and can reduce manufacturing costs can be obtained.
【図面の簡単な説明】
第１図は実施例の軟水製造装置の系統図、第２図はその
分解斜視図である。
各図中、同一符号は同一または相当部分を示し、１は軟
水製造装置、２はボイラ、３は被処理液室、４は再生剤
室、５はカチオン交換膜、１１は原水管、１２は給水管
、１３はブロー水管である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram of a water softening apparatus according to an embodiment, and FIG. 2 is an exploded perspective view thereof. In each figure, the same reference numerals indicate the same or equivalent parts, 1 is the water softening equipment, 2 is the boiler, 3 is the treated liquid chamber, 4 is the regenerant chamber, 5 is the cation exchange membrane, 11 is the raw water pipe, 12 is the The water supply pipe 13 is a blow water pipe.
Claims (1)
び再生剤室と、原水を前記被処理液室に導く流路と、被
処理液室から軟化水をボイラに給水する流路と、ボイラ
からブロー水を前記再生剤室に導く流路とを有している
ことを特徴とする軟水製造装置。(1) A liquid chamber to be treated and a regenerating agent chamber separated by a cation exchange membrane, a flow path that leads raw water to the liquid chamber to be treated, a flow path that supplies softened water from the liquid chamber to the boiler, and a boiler. A water softening apparatus characterized by having a flow path for guiding blow water from the water to the regenerating agent chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28405389A JP2853210B2 (en) | 1989-10-31 | 1989-10-31 | Soft water production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28405389A JP2853210B2 (en) | 1989-10-31 | 1989-10-31 | Soft water production equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03146190A true JPH03146190A (en) | 1991-06-21 |
| JP2853210B2 JP2853210B2 (en) | 1999-02-03 |
Family
ID=17673681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28405389A Expired - Fee Related JP2853210B2 (en) | 1989-10-31 | 1989-10-31 | Soft water production equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2853210B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347558A (en) * | 2015-11-19 | 2016-02-24 | 四川省宜宾惠美线业有限责任公司 | Application system for cation exchanger failure and water outlet |
| CN105439317A (en) * | 2015-11-19 | 2016-03-30 | 四川省宜宾惠美线业有限责任公司 | Application method of cation bed failure outlet water |
| CN115103819A (en) * | 2020-02-18 | 2022-09-23 | 株式会社F.C.C. | Ion exchange device |
-
1989
- 1989-10-31 JP JP28405389A patent/JP2853210B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347558A (en) * | 2015-11-19 | 2016-02-24 | 四川省宜宾惠美线业有限责任公司 | Application system for cation exchanger failure and water outlet |
| CN105439317A (en) * | 2015-11-19 | 2016-03-30 | 四川省宜宾惠美线业有限责任公司 | Application method of cation bed failure outlet water |
| CN115103819A (en) * | 2020-02-18 | 2022-09-23 | 株式会社F.C.C. | Ion exchange device |
| CN115103819B (en) * | 2020-02-18 | 2023-11-21 | 株式会社F.C.C. | Ion exchange device |
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|---|---|
| JP2853210B2 (en) | 1999-02-03 |
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