JPS5835112B2 - Method for treating wastewater containing polyvinyl alcohol and/or starch - Google Patents
Method for treating wastewater containing polyvinyl alcohol and/or starchInfo
- Publication number
- JPS5835112B2 JPS5835112B2 JP2629778A JP2629778A JPS5835112B2 JP S5835112 B2 JPS5835112 B2 JP S5835112B2 JP 2629778 A JP2629778 A JP 2629778A JP 2629778 A JP2629778 A JP 2629778A JP S5835112 B2 JPS5835112 B2 JP S5835112B2
- Authority
- JP
- Japan
- Prior art keywords
- starch
- polyvinyl alcohol
- wastewater
- treatment agent
- calcium
- 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
Links
- 239000004372 Polyvinyl alcohol Substances 0.000 title claims description 25
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims description 25
- 239000002351 wastewater Substances 0.000 title claims description 23
- 229920002472 Starch Polymers 0.000 title claims description 17
- 239000008107 starch Substances 0.000 title claims description 16
- 235000019698 starch Nutrition 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 38
- 239000000292 calcium oxide Substances 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 13
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 13
- 229910052593 corundum Inorganic materials 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 229910001845 yogo sapphire Inorganic materials 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 229940043430 calcium compound Drugs 0.000 description 2
- 150000001674 calcium compounds Chemical class 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009990 desizing Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Description
【発明の詳細な説明】
本発明はポリビニルアルコール及び／又はデンプン含有
排水の処理方法、さらに詳しくいうと、本発明は、カル
シウム・アルミネートと酸化カルシウムとからなり、酸
化カルシウムとアルミナの重量比ＣａＯ／Ａｌ２Ｏ３が
５０１５０〜８５／１５の範囲にある処理剤に対し、ポ
リビニルアルコール及び／又はデンプン含有排水を接触
させ、その中に含まれるポリビニルアルコール及び／又
はデンプンを該処理剤により除去することを特徴とする
ポリビニルアルコール及び／又はデンプン含有排水の処
理方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating wastewater containing polyvinyl alcohol and/or starch, and more specifically, the present invention relates to a method for treating wastewater containing polyvinyl alcohol and/or starch. /Al2O3 in the range of 50150 to 85/15 is brought into contact with polyvinyl alcohol and/or starch-containing waste water, and the polyvinyl alcohol and/or starch contained therein is removed by the treatment agent. The present invention relates to a method for treating wastewater containing polyvinyl alcohol and/or starch.
従来、排水処理剤としては種々のものが提案されている
が、ポリビニルアルコールやデンプンを含有する排水処
理に有効なものは余り知られていない。Various wastewater treatment agents have been proposed in the past, but none are known that are effective in treating wastewater containing polyvinyl alcohol or starch.
この排水処理のために、従来、パルプ排水などの処理剤
として用いられている酸化カルシウムを適用しても良好
な結果は得られない。Even if calcium oxide, which has conventionally been used as a treatment agent for pulp wastewater, is applied to treat wastewater, good results cannot be obtained.
本発明者らは、このような排水処理の困難なポリビニル
アルコールやデンプン含有排水に対する有効な処理法を
開発すべく鋭意研究を重ねた結果、カルシウム・アルミ
ネートと酸化カルシウムの組合せがそのための処理剤と
して著しくすぐれた効果を示すことを見出し、本発明を
完成するに到った。The present inventors have conducted intensive research to develop an effective treatment method for wastewater containing polyvinyl alcohol and starch, which is difficult to treat, and have found that a combination of calcium aluminate and calcium oxide is a treatment agent for this purpose. The present inventors have discovered that the present invention exhibits extremely excellent effects, and have completed the present invention.
本発明で用いる処理剤は、酸化カルシウムとカルシウム
・アルミネートの組合せからなるものであり、それらを
単独で用いても所期の目的は達成されない。The processing agent used in the present invention consists of a combination of calcium oxide and calcium aluminate, and even if they are used alone, the intended purpose cannot be achieved.
本発明で用いるカルシウム・アルミネートは次の一般式
で表わされる。Calcium aluminate used in the present invention is represented by the following general formula.
ＸＣａ０−ＹＡ１２０３
式中、Ｘ及びＹは整数であり、その比Ｘ／Ｙは、通常、
３／１〜３１５である。XCa0-YA1203 where X and Y are integers, and the ratio X/Y is usually
It is 3/1-315.
このようなカルシウム・アルミネートの好ましい例とし
ては、３ＣａＯ−Ａ１２０３．５ＣａＯ・３Ａ１２０３
、ＣａＯ−Ａｌ２Ｏ３，３Ｃａ０・５Ａ１゜０３及びそ
れらの２種以上の混合物が挙げられる・
本発明においては、カルシウム・アルミネートは酸化カ
ルシウムとの組合せの形で用いられるが、この場合、酸
化カルシウムとアルミナの重量比ＣａＯ／Ａｌ２Ｏ３は
５０１５０〜８５／１５の範囲に保持するのがよく、殊
に、７／３〜８／２の範囲で良好な結果を与える。A preferred example of such calcium aluminate is 3CaO-A1203.5CaO.3A1203
, CaO-Al2O3, 3Ca0.5A1゜03, and mixtures of two or more thereof. In the present invention, calcium aluminate is used in combination with calcium oxide; in this case, calcium aluminate is used in combination with calcium oxide. The weight ratio of alumina, CaO/Al2O3, is preferably maintained in the range of 50,150 to 85/15, and particularly good results are obtained in the range of 7/3 to 8/2.
本発明による処理剤の調製は容易であり、焼成によって
酸化カルシウムを形成するカルシウム化合物たとえば水
酸化カルシウム、炭酸カルシウム、塩化カルシウムなど
と、焼成によってアルミナを形成するアルミナ化合物た
とえば水酸化アルミニウム、塩化アルミニウム、硝酸ア
ルミニウムなどとを均一に混合し、この混合物を温度１
１００〜１６００℃、好ましくは１２００〜１４００℃
で焼成する。The treatment agent according to the present invention is easy to prepare, and includes calcium compounds that form calcium oxide upon calcination, such as calcium hydroxide, calcium carbonate, calcium chloride, etc., and alumina compounds that form alumina upon calcination, such as aluminum hydroxide, aluminum chloride, etc. Aluminum nitrate, etc. are mixed uniformly, and the mixture is heated to a temperature of 1
100-1600℃, preferably 1200-1400℃
Fire it with
焼成時間はブ般的に、３０分〜１時間程度で充分である
。Generally, a firing time of about 30 minutes to 1 hour is sufficient.
このようにして、酸化カルシウムとアルミナが結合した
カルシウム・アルミネートが得られる。In this way, calcium aluminate, which is a combination of calcium oxide and alumina, is obtained.
この場合、原料混合物中に、あらかじめ形成するカルシ
ウム・アルミネートの組成に比し、過剰のカルシウム化
合物を配合しておくことにより、酸化カルシウムとカル
シウム・アルミネートの混合物を得ることができる。In this case, a mixture of calcium oxide and calcium aluminate can be obtained by adding an excess amount of calcium compound to the raw material mixture compared to the composition of the calcium aluminate formed in advance.
もちろん、あらかじめ形成したカルシウム・アルミネー
トに、酸化カルシウムを配合し、均一に混合することに
よっても処理剤を調製することができる。Of course, the treatment agent can also be prepared by adding calcium oxide to pre-formed calcium aluminate and mixing uniformly.
本発明による処理剤の粒度は、３０〜２００メツシユ、
通常、８０〜１２０メツシユである。The particle size of the processing agent according to the present invention is 30 to 200 mesh,
Usually, it is 80 to 120 meshes.
本発明の実施には格別の困難はなく、ポリビニルアルコ
ールやデンプン含有排水に対して、前記した本発明の処
理剤を添加し、溶解させ、攪拌すればよい。There is no particular difficulty in implementing the present invention, and the treatment agent of the present invention described above may be added to wastewater containing polyvinyl alcohol or starch, dissolved, and stirred.
この処理剤の添加により、排水中に含まれるポリビニル
アルコールやデンプンは析出し、処理剤の凝集効果によ
り、処理剤と共にフロックを形成し、排水中から分離し
てくる。By adding this treatment agent, polyvinyl alcohol and starch contained in the wastewater precipitate, and due to the coagulation effect of the treatment agent, they form flocs together with the treatment agent and are separated from the wastewater.
この場合の処理装置としては、一般に攪拌槽が適用され
る。In this case, a stirring tank is generally used as the processing device.
本発明の方法は、ポリビニルアルコール及び／又はデン
プンを含有する種々の排水、殊に、繊維工業における糊
ぬき排水（ポリビニルアルコールとデンプン含有）や、
製紙工業における表面サイズ工程排水、及びその故紙排
水、合成高分子の懸濁重合の際の乳化剤排水、家庭用洗
濯糊製造排水などに対して有利に適用される。The method of the present invention can be applied to various wastewaters containing polyvinyl alcohol and/or starch, in particular desizing wastewater (containing polyvinyl alcohol and starch) in the textile industry;
It can be advantageously applied to surface size process wastewater in the paper industry, its waste paper wastewater, emulsifier wastewater during suspension polymerization of synthetic polymers, household laundry starch production wastewater, etc.
次に、本発明を実施例によりさらに詳細に説明する。Next, the present invention will be explained in more detail with reference to Examples.
実施例 １
水酸化カルシウム９９．０８ ｆと水酸化アルミニウム
３８．２Ｆｌを秤り取り、これを充分混合したのち、焼
成温度を種々変えて、焼成時間６０分間で空気中におい
て焼成し、９００℃以下ではＡｌ２Ｏ３とＣａＯとの混
合物及び１１００℃以上ではＣａＯと３ＣａＯ−Ａ１□
０３．５Ｃａ０ ・３Ａ１２０３を含む焼成物を得た（
焼成物のＣａｂ／ＡＮ□０３比＝７５７２５）比
法７５７２５物を処理剤として用い、次のようにしてポ
リビニルアルコール（ＰＶＡ）凝集試験した。Example 1 After weighing 99.08 F of calcium hydroxide and 38.2 F of aluminum hydroxide, and mixing them thoroughly, they were fired in air for 60 minutes at various firing temperatures to a temperature of 900°C or lower. Then, a mixture of Al2O3 and CaO, and above 1100℃, CaO and 3CaO-A1□
A fired product containing 03.5Ca0 ・3A1203 was obtained (
Cab/AN□03 ratio of the fired product = 75725) Ratio method Using the 75725 product as a treatment agent, a polyvinyl alcohol (PVA) aggregation test was conducted as follows.
東京化成工業■製ＰＶＡ（重合度１７５０）を水に溶か
し、ＰＶＡとして５００ｐｐｍを含む水溶液３００ｍ１
に前記焼成物（粒度８０〜１２０メツシユ）０，５♂を
添加し、室温で回転速度３６０ｒｐｒｒｆ）条件下で５
０分かきまぜ、３０分放置したのち、内容物を口紙によ
り口過した。Dissolve PVA (polymerization degree 1750) manufactured by Tokyo Chemical Industry ■ in water and make 300 ml of an aqueous solution containing 500 ppm as PVA.
0.5♂ of the above-mentioned fired product (particle size: 80-120 mesh) was added, and the mixture was heated at room temperature and at a rotational speed of 360 rprrf.
After stirring for 0 minutes and leaving for 30 minutes, the contents were sipped through a mouthpiece.
次に、このようにして得た口液中に含まれる残存ＰＶＡ
を調べた。Next, residual PVA contained in the oral fluid obtained in this way
I looked into it.
口液中のＰＶＡはホウ酸を用いるヨード呈色法でその量
を測定し、その結果から水溶液中のＰＶＡの除去率を求
めた。The amount of PVA in the oral fluid was measured by an iodine coloring method using boric acid, and the removal rate of PVA in the aqueous solution was determined from the results.
その結果を第１表に示す。The results are shown in Table 1.
第１表に示された結果かられかるように、本発明による
処理剤は焼成温度１１００〜１４００℃特に１２００〜
１４００℃の範囲で焼成されたものは良好な除去効果を
示すことがわかる。As can be seen from the results shown in Table 1, the treatment agent according to the present invention was used at a firing temperature of 1100 to 1400°C, especially 1200 to 1200°C.
It can be seen that those fired in the range of 1400°C show good removal effects.
実施例 ２
実施例１と同様にして酸化カルシウムと酸化アルミニウ
ムを種々の割合で含む焼成物を調整し、その焼成物を用
いて実施例１と同様にしてその凝集剤効果を試験した。Example 2 Fired products containing calcium oxide and aluminum oxide in various ratios were prepared in the same manner as in Example 1, and the flocculant effect was tested using the fired products in the same manner as in Example 1.
なお、焼成物を得るための焼成温度は１３００℃とした
。Note that the firing temperature for obtaining the fired product was 1300°C.
その試験の結果を第２表に示す。The results of the test are shown in Table 2.
第２表に示した結果から水酸化カルシウムと水酸化アル
ミニウムからの焼成物からなり、酸化カルシウムと酸化
アルミニウムの重量比Ｃａｂ／Ａｌ２Ｏ３が２／８〜９
／１に凝集効果があり、特にＣａＯ／Ａｌ２Ｏ５が７／
３〜８／２に良好な凝集効果を示すことがわかる。From the results shown in Table 2, the calcined product is composed of calcium hydroxide and aluminum hydroxide, and the weight ratio Cab/Al2O3 of calcium oxide and aluminum oxide is 2/8 to 9.
/1 has an agglomeration effect, especially CaO/Al2O5
It can be seen that a good aggregation effect is shown in the ratio of 3 to 8/2.
なお、焼成物の組成に関しては、ＣａＯ／Ａｌ２Ｏ３重
量比が４０／６０以下ではアルミナとカルシウムアルミ
ネートの共存が認められ、余剰のＣａＯの存在は認めら
れなかったが、ＣａＯ／Ａ Ｉ２０３重量比が５０１５
０〜９０／１０の範囲では余剰のＣａＯとカルシウムア
ルミネートが共存することが確認された。Regarding the composition of the fired product, when the CaO/Al2O3 weight ratio was 40/60 or less, the coexistence of alumina and calcium aluminate was observed, and the presence of excess CaO was not observed; 5015
It was confirmed that excess CaO and calcium aluminate coexist in the range of 0 to 90/10.
実施例 ３
ＰＶＡを表面サイズ剤に用いた紙の再パルプ化排水を水
道水にてＰＶＡとして５００ｐｐｍになるように希釈し
たものを排水とした。Example 3 Wastewater from paper repulping using PVA as a surface sizing agent was diluted with tap water to 500 ppm of PVA.
その排水３００ｍ１に第２表の実験番号８の処理剤を添
加量を変えて加え、実施例１と同様処理し、凝集効果を
試験した。To 300 ml of the wastewater, the treatment agent of Experiment No. 8 in Table 2 was added in varying amounts, treated in the same manner as in Example 1, and the flocculation effect was tested.
その試験結果を第３表に示す。実施例 ４
水酸化カルシウムを１３００℃の焼成温度で１時間焼成
して得た酸化カルシウム０．５１に、市販の３ＣａＯＡ
１□０３（高純度化学研究新製）をその重量を変えて均
一に混合し、この処理剤を用いて実施例１と同様に試験
を行なった。The test results are shown in Table 3. Example 4 Commercially available 3CaOA
1□03 (manufactured by Kojundo Kagaku Kenkyushin Co., Ltd.) was uniformly mixed with varying weights, and a test was conducted in the same manner as in Example 1 using this treatment agent.
その結果を第４表に示す。The results are shown in Table 4.
なお、ＣａＯ／Ａｌ２Ｏ３重量比に関しては、実験番号
１〜６の試料は、それぞれ、６．８９．４．３．２．９
．２，５．２．３及び１．６のＣａＯ／Ａｌ２Ｏ３重量
比を示す。Regarding the CaO/Al2O3 weight ratio, the samples of experiment numbers 1 to 6 were 6.89.4.3.2.9, respectively.
．． CaO/Al2O3 weight ratios of 2, 5, 2.3 and 1.6 are shown.
実施例 ５
実施例４に示したＣａＯと３ＣａＯ−Ａ１２０３との混
合物からなる処理剤を用い、実施例３と同様にして、再
パルプ化排水の処理試験を行なった。Example 5 Using the treatment agent made of the mixture of CaO and 3CaO-A1203 shown in Example 4, a treatment test for repulping wastewater was conducted in the same manner as in Example 3.
そ※※の結果を第５表に示す。The results are shown in Table 5.
なお、ＣａＯ／Ａｌ２Ｏ３重量比に関しては、実験番号
１〜７の試料は、それぞれ、６．９．４．３．３．４．
２．９．２．７．２．５及び１．６のＣａＯ／Ａｌ２Ｏ
３重量比を示す。Regarding the CaO/Al2O3 weight ratio, the samples of experiment numbers 1 to 7 had a weight ratio of 6.9.4.3.3.4.
2.9.2.7.2.5 and 1.6 CaO/Al2O
3 weight ratio is shown.
実施例 ６
実施例１において、ポリビニルアルコール水溶液の代り
にデンプン５００ｐｐｍを含む水溶液を用いた以外は同
様にして吸着試験を行なった。Example 6 An adsorption test was conducted in the same manner as in Example 1 except that an aqueous solution containing 500 ppm of starch was used instead of the polyvinyl alcohol aqueous solution.
ただし、この場合、処理剤としては、１３００℃に焼成
したものを用いた。However, in this case, the treatment agent used was one fired at 1300°C.
Claims (1)
なり、酸化カルシウムとアルミナの重量比ＣａＯ／Ａｌ
２Ｏ３が５０１５０〜８５／１５の範囲にある処理剤に
対し、ポリビニルアルコール及び／又はデンプン含有排
水を接触させ、その中に含まれるポリビニルアルコール
及び／又はデンプンを該処理剤により除去することを特
徴とするポリビニルアルコール及び／又はデンプン含有
排水の処理方法。1 Consisting of calcium aluminate and calcium oxide, the weight ratio of calcium oxide and alumina is CaO/Al
It is characterized by bringing polyvinyl alcohol and/or starch-containing wastewater into contact with a treatment agent having a 2O3 value in the range of 50150 to 85/15, and removing the polyvinyl alcohol and/or starch contained therein with the treatment agent. A method for treating wastewater containing polyvinyl alcohol and/or starch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2629778A JPS5835112B2 (en) | 1978-03-08 | 1978-03-08 | Method for treating wastewater containing polyvinyl alcohol and/or starch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2629778A JPS5835112B2 (en) | 1978-03-08 | 1978-03-08 | Method for treating wastewater containing polyvinyl alcohol and/or starch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54119760A JPS54119760A (en) | 1979-09-17 |
| JPS5835112B2 true JPS5835112B2 (en) | 1983-07-30 |
Family
ID=12189385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2629778A Expired JPS5835112B2 (en) | 1978-03-08 | 1978-03-08 | Method for treating wastewater containing polyvinyl alcohol and/or starch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835112B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2698348B1 (en) * | 1992-11-20 | 1995-02-17 | Lafarge Fondu Int | Process for the purification of a polluted aqueous effluent. |
| JP3266711B2 (en) * | 1993-09-22 | 2002-03-18 | 株式会社クラレ | Wastewater treatment method |
| JP5358055B2 (en) * | 2006-02-17 | 2013-12-04 | 電気化学工業株式会社 | Organophosphorus treatment material and method for treating organophosphorus water using the same |
| CN104984725A (en) * | 2015-07-10 | 2015-10-21 | 常州市宏硕电子有限公司 | Hydrated calcium aluminate and preparation method thereof |
-
1978
- 1978-03-08 JP JP2629778A patent/JPS5835112B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54119760A (en) | 1979-09-17 |
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