JPS63130187A - Method for softening water - Google Patents
Method for softening waterInfo
- Publication number
- JPS63130187A JPS63130187A JP61277360A JP27736086A JPS63130187A JP S63130187 A JPS63130187 A JP S63130187A JP 61277360 A JP61277360 A JP 61277360A JP 27736086 A JP27736086 A JP 27736086A JP S63130187 A JPS63130187 A JP S63130187A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- water
- ppm
- regenerated
- bed
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 50
- 229920005989 resin Polymers 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000011001 backwashing Methods 0.000 claims abstract description 10
- 238000007664 blowing Methods 0.000 claims abstract description 9
- 230000008929 regeneration Effects 0.000 claims abstract description 9
- 238000011069 regeneration method Methods 0.000 claims abstract 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 claims abstract description 8
- 239000003729 cation exchange resin Substances 0.000 claims abstract description 8
- 230000002378 acidificating effect Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000013049 sediment Substances 0.000 claims abstract description 5
- 239000006228 supernatant Substances 0.000 claims abstract description 4
- 238000004062 sedimentation Methods 0.000 abstract description 4
- 239000012267 brine Substances 0.000 abstract 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 27
- 150000002500 ions Chemical class 0.000 description 16
- 239000010410 layer Substances 0.000 description 14
- 239000011780 sodium chloride Substances 0.000 description 13
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 10
- 239000001110 calcium chloride Substances 0.000 description 10
- 229910001628 calcium chloride Inorganic materials 0.000 description 10
- 239000011734 sodium Substances 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- HFGHRUCCKVYFKL-UHFFFAOYSA-N 4-ethoxy-2-piperazin-1-yl-7-pyridin-4-yl-5h-pyrimido[5,4-b]indole Chemical compound C1=C2NC=3C(OCC)=NC(N4CCNCC4)=NC=3C2=CC=C1C1=CC=NC=C1 HFGHRUCCKVYFKL-UHFFFAOYSA-N 0.000 description 1
- 241001408449 Asca Species 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 241000981595 Zoysia japonica Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229920001429 chelating resin Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は水の軟化方法に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for softening water.
水中からの硬度成分であるＯａ及びＭｇイオンの除去、
所謂軟化処理は強酸性陽イオン交換樹脂のＮａ形に通水
して行われるが、辷れはほぼ全産業でボイラー用水の精
製に利用されている他。Removal of Oa and Mg ions, which are hardness components, from water,
The so-called softening process is carried out by passing water through a strongly acidic cation exchange resin in the Na form, while slipping is used in almost all industries to purify boiler water.
ビル媛房用ボイラー、給湯装置等にも広く用いられてい
る。It is also widely used in building boilers, water heaters, etc.
通常この軟化処理はカラムに充填された強酸性陽イオン
交換樹脂への通水、充填樹脂の逆洗、食塩水による樹脂
の再生という一連の操作によって行われているが、樹脂
の通水処理能力は樹脂の全交換能力より低い値しか得ら
れず、処理能力を高める為種々の試みがなされてきた。Normally, this softening process is performed by a series of operations: passing water through a strongly acidic cation exchange resin packed in a column, backwashing the packed resin, and regenerating the resin with saline, but the resin's ability to handle water passing However, a value lower than the total exchange capacity of the resin has been obtained, and various attempts have been made to increase the processing capacity.
本発明者らはこの軟化方法の改良を目的として種々検討
を行なった結果、軟化処理後該樹脂を逆洗再生処理して
再使用するに当り、逆洗後の再生前或いは再生後におい
て上澄液を除去して形成される樹脂の沈降層に空気を吹
き込み均一攪拌する事によって軟化通水処理能力が向上
される事を見出し本発明に到達した。As a result of various studies aimed at improving this softening method, the inventors of the present invention found that when the resin is backwashed and reused after the softening treatment, the supernatant is removed before or after the regeneration after the backwashing. The present invention was achieved by discovering that the softening water flow treatment ability can be improved by blowing air into the resin sediment layer formed by removing the liquid and stirring it uniformly.
上記のように水の軟化処理は強酸性陽イオン交換樹脂の
Ｎａ形に原水を上部より通水して行われるが５通常樹脂
はカラムに充填して用いられる。充填樹脂層高は／〜二
ｍ゛が普通で、この樹脂を通して通常−〇 −，１０ベ
ツド・ボリューム／時の流速で通水を行う。通水を続け
るにつれ樹脂中の交換基は次第にＯａ及びＭ、９イオン
で満たされやがてこれら硬度成分のリークが始まる。通
水はこの時点で停止し、続いて食塩水による樹脂の再生
に移るが、この前【通水中に持ち込まれ樹脂層上に堆積
された微小異物を除去し、同時に通水により圧密化され
た樹脂層をほぐすため、下部より上向きに水を流して樹
脂を展開し洗浄する逆洗操作が行なわれる。充分異物を
洗い出し樹脂層をほぐした後は、逆洗水をとめ流動した
樹脂が沈降するのを待つ。続いて沈静した樹脂層の上部
まで水を抜き通常５〜１Ｏｑｂ食塩水を用いて樹脂の再
生が行われるが。As mentioned above, the water softening treatment is carried out by passing raw water through the Na form of a strongly acidic cation exchange resin from above, but the resin is usually used by filling a column. The height of the filled resin layer is usually 2 m2, and water is passed through the resin at a flow rate of 10 bed volumes/hour. As water continues to flow through the resin, the exchange groups in the resin are gradually filled with Oa, M, and 9 ions, and soon these hardness components begin to leak. Water flow stops at this point, and the resin is then regenerated using saline solution. In order to loosen the resin layer, a backwashing operation is performed in which water is flowed upward from the bottom to expand and wash the resin. After thoroughly washing out foreign matter and loosening the resin layer, stop the backwashing water and wait for the fluidized resin to settle. Subsequently, the water is drained to the top of the settled resin layer, and the resin is regenerated, usually using 5 to 1 Oqb of saline solution.
この再生前或いは再生後にカラム下部より樹脂の沈降層
に空気を吹き込み、均一攪拌する事によって軟化処理能
力が向上される事が見出された。空気吹きノみの時期は
上記のように樹脂の再生前或いは再生後のどちらでもよ
いが、硬度成分の通水時における平均リークの少なさか
ら考えると再生後に行う方がより好ましい。又、この空
気吹き込みによる攪拌は出来るだけ樹脂層を均−Ｉｃ攪
拌する事が好ましく、例えば流速１、♂ゴ／ゴ１分で５
分以上、好ましくは７０分以上吹きこむことばより達成
される。It has been found that the softening ability can be improved by blowing air into the resin sedimentation layer from the bottom of the column and stirring it uniformly before or after this regeneration. The air blowing may be performed either before or after the resin is regenerated as described above, but it is more preferable to perform the air blowing after the regeneration in view of the small average leakage of the hardness component during water passage. In addition, it is preferable to stir the resin layer as uniformly as possible with this air blowing, for example, at a flow rate of 1, male/go 1 minute,
This can be accomplished by blowing the words for at least 70 minutes, preferably at least 70 minutes.
空気吹き込み攪拌は上記の如く出来るだけ均一に樹脂沈
降層が形成されるよりに沈降層上部まで上澄水を抜いた
後洗性なわれる。この水抜きは均一沈降層が得られるの
であれば必ずしも正確に水面が樹脂表層に達する必要は
なく例えば樹脂層上ｌＯ口以下程度でも構わない。The air blowing and agitation process is performed after the supernatant water is removed to the top of the sediment layer so that the resin sediment layer is formed as uniformly as possible as described above. As long as a uniform sedimentation layer can be obtained, the water level does not necessarily have to reach exactly the surface layer of the resin, for example, it may be less than 10 liters above the resin layer.
本発明で用いられる樹脂としては通常の強酸性陽イオン
交換樹脂であれば何を用いてもよく、市販されているダ
イヤイオンＢＥ／Ｂ％ＰＫコ／６（三菱化成■裂）、ア
ンバー２イトエＲ／、１０Ｂ、デュオライト０．２０（
ローム・アンド・ハース社友〕、ダウエックス）ＩＯＲ
（ダウケミカル社製）、レバチット５ｔｏｏ（バイエル
社製ン等が挙げられる。As the resin used in the present invention, any ordinary strong acid cation exchange resin may be used, including commercially available Diamond BE/B% PK Co/6 (Mitsubishi Kasei ■Shiba), Amber 2 Itoe, etc. R/, 10B, Duolite 0.20 (
Rohm & Haas Friends], Dowex) IOR
(manufactured by Dow Chemical Company), Revachit 5too (manufactured by Bayer Company), and the like.
以下本発明の効果を実施例によって説明する。 The effects of the present invention will be explained below using examples.
実施例−／
強酸性陽イオン交換樹脂ダイヤイオンＳＫ／Ｂ（商品名
）のＮａ形−〇〇Ｗを内径コ／誼ダ高さ１０００龍Ｈの
カラムに充填し、これに塩化ナトリウムと塩化カルシウ
ムをｌ：ｌの比率で一２０θＯｐｐｍ（ａｓ ０ａＯＯ
ｓ）含む原水を流速ＳＶ＝コＯで流した。出口液中のＯ
ａ’＋イ、オン濃度が／ ！ ｐｐｍ（ａｓ （３ａＯ
Ｏ，）になるまで通液を行ない、続いて約７０分間の逆
洗を行なった。その後、樹脂面迄液を抜き、下部より空
気を吹き込み、樹脂層を均一に混合した。Example-/ Na form-〇〇W of the strong acidic cation exchange resin Diamond SK/B (trade name) was packed into a column with an inner diameter of 1,000 mm and a height of 1,000 mm, and sodium chloride and calcium chloride were added to the column. -20θOppm (as 0aOO
s) The containing raw water was flowed at a flow rate of SV = 0. O in outlet liquid
a'+i, the on concentration is /! ppm(as (3aO
The liquid was passed until the temperature reached 0, ), and then backwashing was performed for about 70 minutes. Thereafter, the liquid was drained to the resin surface, and air was blown from the bottom to uniformly mix the resin layer.
次忙、１０チー塩化ナトＩＪウム溶液を用いて再生レベ
ル２００１・Ｎａ０１／ｌ−Ｒで再生を行ない、脱塩水
を樹脂と同容量再生時と同じ流速で流し更に脱塩水を用
いて水洗を１７１行なった。Next, perform regeneration using a 10Q sodium chloride solution at a regeneration level of 2001/Na01/l-R, then run demineralized water at the same flow rate as when regenerating the same volume as the resin, and then rinse with demineralized water at 171. I did it.
この再生した樹脂に同じ塩化ナトリウムと塩化カルシウ
ムの原水を流速ＢＶ＝２０で同じく出口液中の０が＋イ
オン濃度がｔ ！ ｐｐｍ（ａｓ ０ａＯＯｓ）Ｋなる
まで通液を行なった。その結果、 Ｃａ’＋イオン濃度
が／ ！ ｐｐｍ（ａｓ ０ａＯＯに、のＯａ交換容量
はり／、コｌ−０ａＯＯｓ／ｌ−Ｒであった。又、その
時の平均リーク量は９．２ ｐｐｍ（ａｓ ＯａＯＯｍ
ｒｃ６つた。The same raw water of sodium chloride and calcium chloride was added to this regenerated resin at a flow rate of BV=20, and the concentration of 0+ ions in the outlet liquid was t! The solution was passed until it reached ppm (as 0aOOs)K. As a result, the Ca'+ ion concentration is /! ppm (as 0aOOs), the Oa exchange capacity was 1-0aOOs/1-R.The average leakage amount at that time was 9.2 ppm (as OaOOm
rc6.
実施例−２
実施例−７と同様にダイヤイオンＥＪＩＣ／Ｂをカラム
に充填し、塩化ナトリウムと塩化カルシウムを／：ｌの
比率で２ｏ ｏ ｏ ｐｐｍ（ａａ ０ａＯＯ１）含む
原水をＢＹ＝２０で流し、出口液中の（ａ”＋イオン濃
度が／ ！ｒ ｐｐｍ（ａｓ Ｏａ○０．）になるまで
通液を行なった。その後、約７０分間の逆洗を行なった
。Example-2 A column was filled with Diaion EJIC/B in the same manner as in Example-7, and raw water containing sodium chloride and calcium chloride at a ratio of /:l of 2o o o ppm (aa 0aOO1) was flowed at BY = 20. The solution was passed until the concentration of (a''+ ions in the outlet liquid reached /!r ppm (as Oa○0.). Thereafter, backwashing was performed for about 70 minutes.
次忙、実施例−／と同様の条件により再生、水洗を行な
った。その後、樹脂面迄液を抜き、下部より空気を吹き
込み、樹脂層を均一に混合した。Next, regeneration and water washing were performed under the same conditions as in Examples. Thereafter, the liquid was drained to the resin surface, and air was blown from the bottom to uniformly mix the resin layer.
この樹脂に同じ塩化ナトリウムと塩化カルシウムの原水
を流速ｓ ｖ＝ａ ｏで同じく出口液中の（ａ”イオン
濃度が／ ｊ ｐｐｍ（ａｓ Ｏａ○０．）になるまで
通液を行なった。The same raw water of sodium chloride and calcium chloride was passed through this resin at a flow rate of s v = ao until the (a'' ion concentration in the outlet liquid reached / j ppm (as Oa○0.).
その結果、Ｏａ″＋イオン濃度が／ ！ ｐｐｍ（ａｓ
０ａＯＯ。As a result, the Oa″+ ion concentration was /! ppm (as
0aOO.
迄のＣｃＬ 交換容量は７０． Ａ ９・０ａＣ（ｈ
／ｌ−Ｒであった。The CcL exchange capacity up to now was 70. A 9・0aC(h
/l-R.
又、その時の平均リーク量は、八／ｐｐｍ（ａｓＯａＯ
Ｏ，）であった。Also, the average leakage amount at that time was 8/ppm (asOaO
O,).
比較例−／
実施例−１，λと同様にダイヤイオンＳＫ／Ｂをカラム
に充填後、実施例−／、コと同じ塩化ナトリウムと塩化
カルシウムの原水をＳＶ＝、２０で流し、出口液中のＯ
ａ”＋イオン濃度が／よｐｐｍ（ａｓ ＯａＯＯｍ）に
なるまで通液を行なった。その後約ｉｏ分間逆洗を行な
った。Comparative Example-/ After filling a column with Diamond ION SK/B in the same manner as in Example-1, λ, the same raw water of sodium chloride and calcium chloride as in Example-/, was flowed at SV = 20, and in the outlet liquid. O of
The solution was passed until the concentration of a''+ ions reached 0 ppm (as OaOOm). After that, backwashing was performed for about io minutes.
次に実施例−／、コと同様な条件により、樹脂の再生、
水洗を行なった。この再生した樹脂に同じ塩化ナトリウ
ムと塩化カルシウムの原水をＳＶ＝二〇で流し、出口液
中のＯａ”＋イオン濃度が／ 、ｔ ｐｐｍ（＆８ Ｃ
！ａｏｏａ）Ｋなるまで通液を行ナッた・
その結果、Ｏａ”イオン濃度が／ ｊ ｐｐｍ （＆Ｂ
ＯａＯＯｍ）迄のＯａ交換容量は４ ／、 ！ｒ Ｉ
・０ａＯＯｖ′！！−Ｒでめつた。Next, the resin was regenerated under the same conditions as in Example-/, and
I washed it with water. The same raw water of sodium chloride and calcium chloride was poured through this regenerated resin at SV=20, and the Oa''+ ion concentration in the outlet liquid was /, t ppm (&8 C
! As a result, the Oa'' ion concentration was /j ppm (&B
The Oa exchange capacity up to OaOOm) is 4 /, ! r I
・0aOOv′! ! - I met with R.
り
又、その時の平均リーク量は／ ０．６ ｐｐｍ（ａＧ
ＯａＣＯａ ）であった。以上の結果を表−／にまとめ
る。The average leakage amount at that time was / 0.6 ppm (aG
OaCOa ). The above results are summarized in Table-/.
実施例−３
強酸性陽イオン交換樹脂アンバーライトエＲ−ｌコＯＥ
（商品名）のＮａ形−００ｒｒｔｔを内径２／ｍｌ、高
さ１０００．ｆｆｋｌのカラムに充填し、これに塩化ナ
トリウムと塩化カルシウムを／：／の比率で２０００
ｐｐｍ ａｓ Ｃａ０Ｏ，含む原水を流速Ｓｖ；−〇で
流した。出口液中のＯａ”イオン濃度が’ ！ｒ １）
ｐｍ（ａａ ０ａＯＯ，）になるまで通液を行ない、続
りて約７０分間の逆洗を行なった。Example-3 Strongly acidic cation exchange resin Amberlite E-R-OE
(Product name) Na type-00rrtt with an inner diameter of 2/ml and a height of 1000mm. Fill a ffkl column with sodium chloride and calcium chloride in a ratio of 2000
Raw water containing ppm as Ca0O was flowed at a flow rate Sv; -0. Oa” ion concentration in the outlet liquid is '!r 1)
The liquid was passed through until the temperature reached pm (aa 0aOO,), and then backwashing was performed for about 70 minutes.
その後、樹脂表面迄液を抜き、下部より空気を吹き込み
樹脂層を均一に混合した。Thereafter, the liquid was drained to the resin surface, and air was blown from the bottom to uniformly mix the resin layer.
次に、／θ俤塩化ナトリウム溶液を用いて再生レベル５
．２００１１ ＮｈＯ１ｌ／１３−Ｒで再生を行ない脱
塩水を樹脂と同容量再生時と同じ流速で流し更に脱塩水
を用いて水洗を７１行なった。Next, regenerate level 5 using /θ 俤 sodium chloride solution.
．． Regeneration was performed with 20011 NhO1l/13-R, and demineralized water was flowed at the same flow rate as when regenerating the same volume as the resin, and further 71 washings were performed using demineralized water.
この再生した樹脂に同じ塩化ナトリウムと塩化カルシウ
ムの原水を流速Ｓ Ｖ＝２０で同じく出口液中のＯａ”
＋イオン濃度が／ ！； ｐｐｍ （ａｓ ０ａＯＯ，
）になるまで通液を行なった。その結果、 Ｏａ叶イオ
ン濃度が／ ｊ ｐｐｍ （ａｓ Ｏ＆Ｃ０５ｇのＯａ
交換容量はＡ １．ｌ 、ｌｉ’ Ｃａ００ｖ’ｌ−Ｒ
であった。又、その時の平り
均リーク量は／ ／、 ／ ｐｐｍ ｌＬ８０ａＯＯａ
であった。The same raw water of sodium chloride and calcium chloride was added to this regenerated resin at a flow rate of SV = 20.
+Ion concentration/! ; ppm (as 0aOO,
). As a result, the Oa leaf ion concentration was / j ppm (as O&C05g Oa
Exchange capacity is A1. l ,li'Ca00v'l-R
Met. Also, the average leakage amount at that time is / /, / ppm 1L80aOOa
Met.
比較例−一
実施例−３と同様に工Ｒ−／コＯＢをカラムに充填し、
実施例−３と同じ塩化ナトリウムと塩化カルシウムを含
む原水を流速Ｓ Ｖ＝２０で流し、出口液中のＯａ”＋
イオン濃度が／ 左ｐｐｍ（ａｓｃａ ＯＯｓ）になる
まで通液を行なった。その後約１０分間の逆流を行なっ
た。Comparative Example - Fill a column with KoR-/CoOB in the same manner as in Example-3,
Raw water containing the same sodium chloride and calcium chloride as in Example-3 was flowed at a flow rate of SV=20, and Oa''+ in the outlet liquid was
The solution was passed until the ion concentration reached 1/2 ppm (asca OOs). Thereafter, backflow was performed for about 10 minutes.
次に、実施例−３と同様な条件により樹脂の再生、水洗
を行なった。この再生した樹脂に同じ塩化ナトリウムと
塩化カルシウムの原水を流速８ Ｖ＝ ２０で流し、出
口液中のＯａ”＋イオン濃度が／ ｋ ｐｐｍ（ａｓ
０ａＣＯ，）になるまで通液を行なった。その結果、Ｏ
ａ”＋イオン濃度が／ ｊ ｐｐｍ（ａＥＩＣａＯＯ，
）迄のＯａ交換容量は！ｒ ｒ、 Ｉ １−ｃａｏｏ、
／ｌ−Ｒり
であった。又、その時の平均＋）−Ｐ：ｊｉは／−１６
ｐｐｍ（ａｓ ０ａＯＯｓ）であった。以上の結果を表
−コにまとめる。Next, the resin was regenerated and washed with water under the same conditions as in Example-3. The same raw water of sodium chloride and calcium chloride was flowed through this regenerated resin at a flow rate of 8 V = 20, and the Oa''+ ion concentration in the outlet liquid was / k ppm (as
The solution was passed until the temperature reached 0aCO,). As a result, O
a”+ ion concentration is / j ppm (aEICaOO,
) The Oa exchange capacity is up to! r r, I 1-caoo,
/l-Rri. Also, the average at that time +)-P:ji is /-16
ppm (as 0aOOs). The above results are summarized in Table-C.
表−一
〔発明の効果〕
以上のように不発明によると効率的に水を軟化処理する
ことができる。Table 1 [Effects of the Invention] As described above, according to the invention, water can be efficiently softened.
Claims (1)
軟化処理した後、該樹脂を逆洗再生処理して再使用する
に当り、逆洗後の再生前或いは再生後において、上澄液
を除去して形成される樹脂の沈降層にカラム下部より空
気を吹き込み均一攪拌することを特徴とする水の軟化方
法。(1) After softening raw water by passing it through a column of strongly acidic cation exchange resin, when the resin is backwashed and reused, the supernatant liquid is removed before or after the regeneration after backwashing. A water softening method characterized by uniformly stirring the resin sediment layer formed by blowing air from the bottom of the column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61277360A JPS63130187A (en) | 1986-11-20 | 1986-11-20 | Method for softening water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61277360A JPS63130187A (en) | 1986-11-20 | 1986-11-20 | Method for softening water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63130187A true JPS63130187A (en) | 1988-06-02 |
Family
ID=17582439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61277360A Pending JPS63130187A (en) | 1986-11-20 | 1986-11-20 | Method for softening water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63130187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019475A (en) * | 2021-03-16 | 2021-06-25 | 台嘉成都玻纤有限公司 | Softener resin regeneration method |
-
1986
- 1986-11-20 JP JP61277360A patent/JPS63130187A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113019475A (en) * | 2021-03-16 | 2021-06-25 | 台嘉成都玻纤有限公司 | Softener resin regeneration method |
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