JP2003047974A - Underwater dephosphorizing agent composition and method for removing phosphor from water by using the same - Google Patents
Underwater dephosphorizing agent composition and method for removing phosphor from water by using the sameInfo
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- JP2003047974A JP2003047974A JP2001237556A JP2001237556A JP2003047974A JP 2003047974 A JP2003047974 A JP 2003047974A JP 2001237556 A JP2001237556 A JP 2001237556A JP 2001237556 A JP2001237556 A JP 2001237556A JP 2003047974 A JP2003047974 A JP 2003047974A
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、河川、湖沼、海
水、上下水道に含まれ汚染源となっているリンを効率よ
く除去し、浄化するための水中脱リン剤組成物及びそれ
を用いた水中からのリン除去方法に関するものである。TECHNICAL FIELD The present invention relates to an underwater dephosphorizing composition for efficiently removing and purifying phosphorus, which is a pollution source contained in rivers, lakes and marshes, seawater, and water and sewers, and an underwater composition using the same. The present invention relates to a method for removing phosphorus from ash.
【０００２】[0002]
【従来の技術】工場や家庭から排出される排水中のリン
は、河川、湖沼、海水の富栄養化の原因となり、環境破
壊を引き起すことから、これの除去、回収は大きな社会
問題となっている。2. Description of the Related Art Phosphorus contained in wastewater discharged from factories and households causes eutrophication of rivers, lakes and seawater and causes environmental damage. Therefore, removal and recovery of phosphorus becomes a major social problem. ing.
【０００３】そのため、これまで多種多様の水中脱リン
剤や水中脱リン方法が提案されている。すなわち、水中
脱リン剤としては、例えば石灰質原料、ケイ酸質原料及
びゼオライトの反応生成物からなる脱リン材（特開２０
０１−９４７０号公報）、アロフェンを主成分とする物
質を成形し、３００〜６００℃で焼成してなる除去材
（特開平３−６８４４５号公報）、産業廃棄物を溶融処
理して得たスラグを微粉砕し、その中の酸化カルシウム
をアルカリ処理して除去し、多孔状化したリン除去用無
機吸着材（特開昭６３−３９６３２号公報）、流動床ボ
イラーから排出される灰を主成分とする脱リン材（特開
平５−２６１３７８号公報）などが知られているし、ま
た水中脱リン方法としては、例えば、酸化アルミニウム
及び酸化ナトリウムを含む活性アルミナに海水を接触さ
せる海水の脱リン方法（特開平６−３２８０６７号公
報）、アンモニウムイオンを含有するリン酸塩排水にマ
グネシウムイオンを添加し、次いでｐＨ値を８以上に調
整したのち、リン酸マグネシウムアンモニウム含有粒状
物の充填層に通し、排水中のリンをリン酸マグネシウム
アンモニウム粒子として上記粒状物の表面層に析出させ
る方法（特開昭６３−２００８８８号公報）、リンを含
む水溶液をカルシウムイオンの存在下で、リン除去能力
を有する粒状物と接触させる際に、この水溶液中に塩類
溶液を添加して液の電気伝導度を２０００ｉ□／ｃｍ以
上に調整して接触脱リンする方法（特開平３−２０７４
８９号公報）などが知られている。Therefore, various kinds of underwater dephosphorizing agents and underwater dephosphorizing methods have been proposed so far. That is, as the dephosphorizing agent in water, for example, a dephosphorizing agent composed of a reaction product of a calcareous raw material, a siliceous raw material, and zeolite (Japanese Patent Application Laid-Open No. 20-200200).
No. 01-9470), a removal material formed by molding a substance containing allophane as a main component, and firing it at 300 to 600 ° C. (JP-A-3-68445), and slag obtained by melting industrial waste. Is finely pulverized, and calcium oxide therein is treated with an alkali to remove it, and a porous inorganic adsorbent for phosphorus removal (Japanese Patent Laid-Open No. 63-39632) and ash discharged from a fluidized-bed boiler are main components. And a dephosphorizing material (Japanese Patent Application Laid-Open No. 5-261378) for example, and as a dephosphorizing method in water, for example, dephosphorizing seawater by contacting seawater with activated alumina containing aluminum oxide and sodium oxide. Method (Japanese Patent Laid-Open No. 6-328067), magnesium ions are added to phosphate wastewater containing ammonium ions, and then the pH value is adjusted to 8 or more, and then phosphate A method in which phosphorus in wastewater is deposited as magnesium ammonium phosphate particles on the surface layer of the above-mentioned granules by passing through a packed bed of the nesium-ammonium-containing granules (JP-A-63-200888), an aqueous solution containing phosphorus is calcium ion. In the presence of the above, when contacting with a granular material having a phosphorus removing ability, a salt solution is added to this aqueous solution to adjust the electric conductivity of the solution to 2000 i □ / cm or more and catalytic dephosphorization is performed. Kaihei 3-2074
No. 89) is known.
【０００４】しかしながら、これらの脱リン剤や脱リン
方法は、二次公害を発生させる、生産量の少ない物質を
用いる必要がある、特殊な設備を必要とする、除去効率
が低いなどの問題点を有し、大量のリン含有水溶液を処
理するには、まだ十分に満足しうるものとはいえない。However, these dephosphorizing agents and dephosphorizing methods have problems that secondary pollution occurs, it is necessary to use a substance with a small production amount, special equipment is required, and the removal efficiency is low. Therefore, it is not yet sufficiently satisfactory to treat a large amount of phosphorus-containing aqueous solution.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、容易に入手
しうる原料を用い、高い効率で水中のリンを除去しう
る、安全な脱リン剤組成物を提供し、かつこれを用いて
リンで汚染された河川、湖沼、海、上下水道の水を浄化
する方法を提供することを目的としてなされたものであ
る。DISCLOSURE OF THE INVENTION The present invention provides a safe dephosphorizing agent composition capable of removing phosphorus in water with high efficiency by using easily available raw materials, and by using the same. The purpose is to provide a method for purifying water polluted by rivers, lakes, seas, and water and sewers.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、水中のリ
ンを効率よく除去することができ、しかも安全に取り扱
いうる脱リン剤を開発するために鋭意研究を重ねた結
果、リン酸カルシウム系セラミックス上にヒドロキシア
パタイトが晶析する現象に着目し、従来知られていなか
った脱リン機構による新規な脱リン剤を得ることに成功
し、本発明をなすに至った。DISCLOSURE OF THE INVENTION The inventors of the present invention have conducted extensive studies to develop a dephosphorizing agent which can efficiently remove phosphorus in water and can be handled safely. As a result, calcium phosphate-based ceramics have been obtained. Focusing on the phenomenon that hydroxyapatite is crystallized, the inventors succeeded in obtaining a novel dephosphorizing agent having a dephosphorization mechanism which has not been known so far, and completed the present invention.
【０００７】すなわち、本発明は、（Ａ）アパタイト形
成性物質１００質量部、（Ｂ）水硬性バインダー３〜１
００質量部及び（Ｃ）水性樹脂エマルション２〜５０質
量部を含有してなる水中脱リン剤組成物、及びリン含有
水溶液に、この水中脱リン剤組成物を、その１００質量
部当り少なくとも０．１質量部の割合で投入し、リン含
有水溶液中のリン濃度が実質的に低下するのに十分な時
間浸漬することを特徴とする水中からのリン除去方法を
提供するものである。That is, the present invention comprises (A) 100 parts by mass of an apatite-forming substance, and (B) a hydraulic binder 3-1.
00 parts by mass and (C) an aqueous resin emulsion in an amount of 2 to 50 parts by mass, and an aqueous phosphorus-containing solution containing the dephosphorizing composition in water at least 0. The present invention provides a method for removing phosphorus from water, which is characterized in that the phosphorus is added at a ratio of 1 part by mass and immersed for a time sufficient to substantially reduce the phosphorus concentration in the phosphorus-containing aqueous solution.
【０００８】[0008]
【発明の実施の形態】本発明の脱リン剤組成物は、
（Ａ）アパタイト形成性物質、（Ｂ）水硬性バインダ
ー、（Ｃ）水性樹脂エマルション及び場合により（Ｄ）
カルシウム供給物質を含有してなる。BEST MODE FOR CARRYING OUT THE INVENTION The dephosphorizing agent composition of the present invention comprises
(A) Apatite-forming substance, (B) hydraulic binder, (C) aqueous resin emulsion and optionally (D)
It comprises a calcium-providing substance.
【０００９】この（Ａ）成分のアパタイト形成性物質と
しては、Ｃａ3（ＰＯ4）2のような不溶性リン酸化合物
を主体とするものが用いられるが、廃陶土として未利用
のまま投棄されている廃ボーンアッシュや廃ボーンチャ
イナを用いるのがよい。このアパタイト形成性物質とし
ては、α‐リン酸カルシウム、β‐リン酸三カルシウム
のほかに、リン酸四カルシウムＣａ4（ＰＯ4）2、リン
酸水素カルシウム二水和物ＣａＨＰＯ4・２Ｈ2Ｏ、リン
酸水素カルシウム無水物ＣａＨＰＯ4、リン酸二水素カ
ルシウム−水和物Ｃａ（Ｈ2ＰＯ4）・Ｈ2Ｏなどを主体
としたものを用いることができる。通常、アパタイト形
成性物質としては、ボーンチャイナを用いるのが好まし
いが、これは少なくとも１０質量％、好ましくは３０〜
６０質量％のリン濃度で不溶性リン酸化合物を含有す
る。このアパタイト形成性物質は、通常平均粒径５〜５
０μｍ、好ましくは１０〜３０μｍの粉末として用いら
れる。As the apatite-forming substance as the component (A), a substance mainly composed of an insoluble phosphoric acid compound such as Ca 3 (PO 4 ) 2 is used, but it is discarded as unused pottery clay and discarded. It is better to use abandoned bone ash or abandoned bone china. Examples of the apatite-forming substance include α-calcium phosphate, β-tricalcium phosphate, tetracalcium phosphate Ca 4 (PO 4 ) 2 , calcium hydrogen phosphate dihydrate CaHPO 4 .2H 2 O, and phosphorus. It is possible to use those mainly containing calcium hydrogen hydride anhydrous CaHPO 4 , calcium dihydrogen phosphate hydrate Ca (H 2 PO 4 ) H 2 O, and the like. Usually, as the apatite-forming substance, it is preferable to use bone china, which is at least 10% by mass, preferably 30 to 30% by mass.
It contains an insoluble phosphate compound at a phosphorus concentration of 60% by weight. This apatite-forming substance usually has an average particle size of 5 to 5
It is used as a powder of 0 μm, preferably 10 to 30 μm.
【００１０】次に、（Ｂ）成分の水硬性バインダーとし
ては、ポルトランドセメント、アルミナセメント、特殊
セメント、高炉スラグ、フライアッシュなどのケイ素及
びカルシウムを含有する水により硬化しうる無機バイン
ダーが用いられる。この水硬性バインダーとしては、特
にｐＨ値の低いものが好ましい。この水硬性バインダー
は、通常、平均粒径５〜５０μｍ、好ましくは１０〜３
０μｍの粉末として用いられる。成形体のｐＨとして
は、７．５〜１０、好ましくは７．８〜９．５の範囲が
よい。この（Ｂ）成分は、（Ａ）成分１００質量部当り
３〜１００質量部、好ましくは５〜５０質量部の割合で
用いられる。Next, as the hydraulic binder of the component (B), an inorganic binder containing silicon and calcium, such as Portland cement, alumina cement, special cement, blast furnace slag and fly ash, which can be hardened by water, is used. As the hydraulic binder, one having a low pH value is particularly preferable. This hydraulic binder usually has an average particle size of 5 to 50 μm, preferably 10 to 3
Used as 0 μm powder. The pH of the molded product is in the range of 7.5 to 10, preferably 7.8 to 9.5. The component (B) is used in a proportion of 3 to 100 parts by mass, preferably 5 to 50 parts by mass, per 100 parts by mass of the component (A).
【００１１】また、本発明においては、セメントによる
成形性を高め、バインダーとして耐アルカリ性、耐水性
を付与するために、（Ｃ）成分として水性樹脂エマルシ
ョンを配合することが必要である。この水性樹脂エマル
ションとしては、水性ラテックス、アクリルエマルショ
ン、エチレン−酢酸ビニルエマルション、酢酸ビニル−
アクリルエマルション、ポリウレタンエマルション、エ
ポキシエマルション、シリコーンエマルション、パウダ
ーエマルションなどを単独で又は２種以上混合して用い
る。これらはいずれもよく知られているものであり、市
販品として容易に入手しうる。この水性樹脂エマルショ
ンとしては、固形分濃度３０〜６０質量％のものが好ま
しい。Further, in the present invention, it is necessary to blend an aqueous resin emulsion as the component (C) in order to enhance the moldability of the cement and impart alkali resistance and water resistance as the binder. Examples of the aqueous resin emulsion include aqueous latex, acrylic emulsion, ethylene-vinyl acetate emulsion, vinyl acetate-
Acrylic emulsion, polyurethane emulsion, epoxy emulsion, silicone emulsion, powder emulsion and the like are used alone or in combination of two or more. All of these are well known and can be easily obtained as commercial products. The aqueous resin emulsion preferably has a solid content concentration of 30 to 60% by mass.
【００１２】この水性樹脂エマルションを用いるのは、
有機溶剤系エマルションを用いると、環境や衛生に悪影
響を与えるし、無溶剤では混合性が悪くなるのに対し、
作業性がよく、セメントとの混合が容易なためである。
このエマルションは、有機溶剤や可塑剤を用いる必要が
なく、かつ分子量が大きく耐水性を発揮するものが好ま
しい。そして、これを添加することにより成形性及び強
度を向上させることができるが、あまり多く添加すると
リン酸成分やアルカリ成分が皮膜化され、シールされ
て、所要の効果を奏しなくなるため、（Ａ）成分１００
質量部当り２〜５０質量部にする必要がある。好ましい
割合は５〜３０質量部である。これらの（Ａ）、（Ｂ）
及び（Ｃ）成分の量の基準となる（Ａ）成分の量は、ボ
ーンアッシュ換算の量である。The use of this aqueous resin emulsion is
When using an organic solvent emulsion, it adversely affects the environment and hygiene, and the miscibility deteriorates without a solvent.
This is because it has good workability and is easy to mix with cement.
It is preferable that this emulsion does not need to use an organic solvent or a plasticizer, has a large molecular weight, and exhibits water resistance. Then, by adding this, the moldability and strength can be improved, but if too much is added, the phosphoric acid component and the alkaline component will be formed into a film and sealed, and the desired effect will not be obtained, so (A) Ingredient 100
It is necessary to use 2 to 50 parts by mass per part by mass. A preferred ratio is 5 to 30 parts by mass. These (A), (B)
The amount of the component (A), which serves as a reference for the amount of the component (C), and the amount of the bone ash.
【００１３】本発明脱リン剤組成物においては、所望に
応じ不足量のカルシウム成分を補給するために、（Ｄ）
成分として、炭酸カルシウム、酸化カルシウム、水酸化
カルシウム、硫酸カルシウムのようなカルシウム供給物
質を配合することもできる。このカルシウム供給物質と
しては、水産廃棄物の貝殻を粉砕して用いることもでき
る。しかしながら、カルシウム成分が過剰になると二次
公害の原因になるので、（Ａ）成分１００質量部当り１
５０質量部を超えない量で用いることが必要である。In the dephosphorizing composition of the present invention, in order to supplement the calcium component in an insufficient amount, if desired, (D)
As a component, a calcium supplying substance such as calcium carbonate, calcium oxide, calcium hydroxide or calcium sulfate can be added. As the calcium-supplying substance, it is also possible to use crushed seafood shells. However, if the calcium component becomes excessive, it will cause secondary pollution, so 1 per 100 parts by weight of component (A).
It is necessary to use it in an amount not exceeding 50 parts by mass.
【００１４】本発明の脱リン剤組成物は、（Ａ）、
（Ｂ）及び（Ｃ）成分又は場合により配合する（Ｄ）成
分その他の添加成分を所定割合で混合し、水を加えて混
練し、造粒して用いるのが好ましい。この際、使用時に
遊離しないように、その比重を１．１以上に調整するの
が望ましい。この粒状体の粒径としては、１〜２０ｍ
ｍ、好ましくは５〜１５ｍｍ程度が適当であるが、所望
ならばさらに小さいもの、あるいは大きいものに成形す
ることができる。また、粒状体中のリン濃度は少なくと
も１０質量％、好ましくは３０〜６０質量％の範囲で選
ぶのがよい。The dephosphorizing composition of the present invention comprises (A),
It is preferable to mix the components (B) and (C), or the component (D) to be optionally blended, and other additive components at a predetermined ratio, add water, knead, and granulate before use. At this time, it is desirable to adjust the specific gravity to 1.1 or more so as not to be released during use. The particle size of this granular material is 1 to 20 m.
m, preferably about 5 to 15 mm, but if desired, it can be molded into a smaller one or a larger one. Further, the phosphorus concentration in the granular material is at least 10% by mass, preferably 30 to 60% by mass.
【００１５】本発明の脱リン剤組成物を用いて水中のリ
ンを除去するには、例えばリンを含有する水中に、その
１００質量部当り、少なくとも０．１質量部、好ましく
は５〜２０質量部の割合の脱リン剤組成物を投入し、水
中のリン濃度が実質的に低下するのに十分な時間浸漬す
る。この時間は、通常３０分間ないし３０時間である。
この場合、接触を促進するために所望ならば機械的にか
きまぜや振りまぜを行うこともできる。このようにし
て、１０〜１００時間後に、初期濃度の１／５ないし１
／２０程度、絶対温度として１０ｐｐｍ以下までリン濃
度を減少させることができる。To remove phosphorus in water using the dephosphorizing composition of the present invention, for example, in water containing phosphorus, at least 0.1 parts by weight, preferably 5 to 20 parts by weight, per 100 parts by weight thereof. The dephosphorizing agent composition is added in a proportion of 1 part and immersed for a time sufficient to substantially reduce the phosphorus concentration in the water. This time is usually 30 minutes to 30 hours.
In this case, mechanical agitation or agitation can be performed if desired to promote contact. Thus, after 10 to 100 hours, 1/5 to 1 of the initial concentration
It is possible to reduce the phosphorus concentration to about / 20 or less as an absolute temperature of 10 ppm or less.
【００１６】[0016]
【実施例】次に実施例により本発明をさらに詳細に説明
する。EXAMPLES The present invention will be described in more detail with reference to examples.
【００１７】実施例１
ボーンアッシュ１００質量部、低ｐＨセメント（石川産
業社製、商品名「エコセメント」、ｐＨ８．２）３０質
量部、アクリルエマルション（ＢＡＳＦディスパージョ
ン社製、商品名「アクロナールＹＪ−１６５５Ｄ」、固
形分濃度５５％）５質量部及びセルロース（信越化学社
製、商品名「メトローズ」）０．２質量部を混合し、メ
カノミル（岡田精工社製、商品名「ラボ用粉体処理装
置」）を用い、４５０ｒｐｍの条件下で７分間混合した
のち、造粒し、直径１３〜１７ｍｍの顆粒状の脱リン剤
組成物を調製した。このもののリン濃度はリン酸カルシ
ウム換算で７５質量％であった。Example 1 100 parts by mass of bone ash, 30 parts by mass of low pH cement (manufactured by Ishikawa Sangyo Co., Ltd., trade name "Eco-cement", pH 8.2), acrylic emulsion (manufactured by BASF Dispersion, trade name "Acronal YJ") -1655D ", solid content concentration 55%) 5 parts by mass and cellulose (manufactured by Shin-Etsu Chemical Co., Ltd., trade name" Metroze ") 0.2 parts by mass are mixed, and mechanomill (Okada Seiko Co., Ltd. trade name" laboratory powder " Processing device ”) and mixing for 7 minutes under the condition of 450 rpm, and then granulating to prepare a granular dephosphorizing agent composition having a diameter of 13 to 17 mm. The phosphorus concentration of this product was 75% by mass in terms of calcium phosphate.
【００１８】実施例２
実施例１と同様にしてボーンアッシュの使用量を変える
ことにより、リン濃度１０質量％、２０質量％、３０質
量％、４０質量％の顆粒状の脱リン剤組成物を調製し
た。Example 2 A granular dephosphorizing agent composition having a phosphorus concentration of 10% by mass, 20% by mass, 30% by mass and 40% by mass was prepared by changing the amount of bone ash used in the same manner as in Example 1. Prepared.
【００１９】実施例３
廃ボーンチャイナ（ボーンアッシュ含有量４５質量％）
２２２質量部（ボーンアッシュ換算１００質量部）にア
ルミナセメント（ｐＨ９．５）１５質量部、パウダーエ
マルション（ＢＡＳＦディスパージョン社製、商品名
「アクロナールＳ−４３０Ｐ」）１５質量部、貝殻粉末
（カネボウ社製、商品名「ハイセアーＳ」）２０質量部
及びセルロース（信越化学社製、商品名「ハイメイ
ト」）１．０質量部を加え、さらに水適量を加えて混練
し、直径１．０ｍｍ、長さ５ｍｍの顆粒に造粒後、乾燥
することにより水中脱リン剤を調製した。Example 3 Waste bone china (bone ash content 45% by mass)
222 parts by mass (100 parts by mass in terms of bone ash) 15 parts by mass of alumina cement (pH 9.5), powder emulsion (manufactured by BASF Dispersion, trade name "Acronal S-430P") 15 parts by mass, shell powder (Kanebo Co., Ltd.) 20 parts by mass of trade name "Hi-Cear S") and 1.0 part by mass of cellulose (manufactured by Shin-Etsu Chemical Co., Ltd., trade name "Himate") are added, and an appropriate amount of water is further added and kneaded to obtain a diameter of 1.0 mm and a length The dephosphorizing agent in water was prepared by granulating the granules into 5 mm and then drying.
【００２０】参考例１
初濃度３２５ｐｐｍのリン緩衝水溶液１００質量部に対
し、実施例１及び２で得た顆粒状脱リン剤組成物をそれ
ぞれ１０質量部（●印）、２０質量部（▲印）及び５０
質量部（■印）の割合で投入し、浸漬時間と水溶液中の
リン残存量との関係を調べ、グラフとして図１に示す。
この図から明らかなように、リン濃度１０質量％の脱リ
ン剤では、浸漬後１４〜１５時間で水溶液中のリン残存
量は半減し、１１０時間後には、ほぼ完全に除去され
た。また、リン濃度５０質量％の脱リン剤組成物では、
１２時間で水溶液中のリンは完全に除去された。Reference Example 1 10 parts by mass (marked with ●) and 20 parts by mass (marked with ▲) of the granular dephosphorizing agent compositions obtained in Examples 1 and 2 were added to 100 parts by mass of an aqueous solution of phosphorus buffer having an initial concentration of 325 ppm. ) And 50
The mixture was added at a rate of parts by mass (marked with ■), and the relationship between the immersion time and the amount of phosphorus remaining in the aqueous solution was examined, and a graph is shown in FIG.
As is clear from this figure, with the dephosphorizing agent having a phosphorus concentration of 10% by mass, the residual amount of phosphorus in the aqueous solution was halved in 14 to 15 hours after immersion, and was almost completely removed after 110 hours. Further, in the dephosphorizing agent composition having a phosphorus concentration of 50% by mass,
Phosphorus in the aqueous solution was completely removed in 12 hours.
【００２１】参考例２
実施例１で得た脱リン剤組成物を、３０質量部（●
印）、４０質量部（▲印）及び５０質量部（■印）ずつ
リン含有量１５０ｐｐｍの工場廃液１００質量部に加
え、処理時間によるリン含有量の変化を調べ、グラフと
して図２に示す。この図から明らかなように、リン濃度
３０質量％及び４０質量％の脱リン剤組成物では、水溶
液中のリンが完全に除去するまでに約２０時間要したの
に対し、リン濃度５０質量％の脱リン剤組成物では、約
３時間であった。Reference Example 2 30 parts by mass of the dephosphorizing composition obtained in Example 1 (●
Mark), 40 parts by mass (▴) and 50 parts by mass (▴) to 100 parts by mass of the factory waste liquid having a phosphorus content of 150 ppm, and the change in the phosphorus content with the treatment time was examined, and the graph is shown in FIG. As is clear from this figure, in the dephosphorizing agent compositions having a phosphorus concentration of 30% by mass and 40% by mass, it took about 20 hours until the phosphorus in the aqueous solution was completely removed, whereas the phosphorus concentration of 50% by mass was used. With the dephosphorizing agent composition of No. 3, it took about 3 hours.
【００２２】[0022]
【発明の効果】本発明によれば、未利用のまま廃棄され
ていたボーンアッシュやボーンチャイナなどを原料とし
て、水中のリンを効率よく除去しうる脱リン剤を得るこ
とができる。According to the present invention, it is possible to obtain a dephosphorizing agent that can efficiently remove phosphorus in water by using, as a raw material, bone ash, bone china, etc. that have been discarded as unused.
【図１】 本発明の脱リン剤のリン含有水溶液中におけ
る浸漬時間とリン残存量の関係を示すグラフ。FIG. 1 is a graph showing the relationship between the immersion time of a phosphorus removing agent of the present invention in a phosphorus-containing aqueous solution and the residual phosphorus amount.
【図２】 本発明の脱リン剤の工業廃液中における浸漬
時間とリン残存量との関係を示すグラフ。FIG. 2 is a graph showing the relationship between the immersion time of the dephosphorizing agent of the present invention in an industrial waste liquid and the residual phosphorus amount.
Claims (8)
部、（Ｂ）水硬性バインダー３〜１００質量部及び
（Ｃ）水性樹脂エマルション２〜５０質量部を含有して
なる水中脱リン剤組成物。1. A dephosphorizing agent composition in water comprising (A) 100 parts by mass of an apatite-forming substance, (B) 3 to 100 parts by mass of a hydraulic binder, and (C) 2 to 50 parts by mass of an aqueous resin emulsion. .
さらに（Ａ）成分１００質量部当り１５０質量部を超え
ない量の（Ｄ）カルシウム供給物質を含有する請求項１
記載の水中脱リン剤組成物。2. In addition to the components (A), (B) and (C),
The calcium-providing substance (D) is contained in an amount not exceeding 150 parts by mass per 100 parts by mass of the component (A).
The dephosphorizing composition in water described.
ーンアッシュ及びボーンチャイナの中から選ばれた少な
くとも１種である請求項１又は２記載の水中脱リン剤組
成物。3. The dephosphorizing agent composition in water according to claim 1, wherein the apatite-forming substance as the component (A) is at least one selected from bone ash and bone china.
ランドセメント、アルミナセメント、特殊セメント、高
炉スラグ及びフライアッシュの中から選ばれた少なくと
も１種である請求項１、２又は３記載の水中脱リン剤組
成物。4. The dewatering in water according to claim 1, 2 or 3, wherein the hydraulic binder as the component (B) is at least one selected from portland cement, alumina cement, special cement, blast furnace slag and fly ash. Phosphorus composition.
酸カルシウム、酸化カルシウム、水酸化カルシウム、硫
酸カルシウム及び貝殻の中から選ばれた少なくとも１種
である請求項３記載の水中脱リン剤組成物。5. The dephosphorizing agent composition in water according to claim 3, wherein the calcium-providing substance as the component (D) is at least one selected from calcium carbonate, calcium oxide, calcium hydroxide, calcium sulfate and shells. object.
ように調整された請求項１ないし５のいずれかに記載の
水中脱リン剤組成物。6. The dephosphorizing agent composition in water according to claim 1, wherein the phosphorus concentration is adjusted to be at least 10% by mass.
求項１ないし６のいずれかに記載の水中脱リン剤組成
物。7. The dephosphorizing agent composition in water according to claim 1, which is formed into a granular body having a specific gravity of 1.1 or more.
いずれかに記載の水中脱リン剤組成物を、その１００質
量部当り少なくとも０．１質量部の割合で投入し、リン
含有水溶液中のリン濃度が実質的に低下するのに十分な
時間浸漬することを特徴とする水中からのリン除去方
法。8. The phosphorus-containing aqueous solution is charged with the water-dephosphorizing agent composition according to claim 1 at a ratio of at least 0.1 part by weight per 100 parts by weight of the phosphorus-containing aqueous solution. A method for removing phosphorus from water, which comprises immersing for a time sufficient to substantially reduce the phosphorus concentration of the above.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001237556A JP2003047974A (en) | 2001-08-06 | 2001-08-06 | Underwater dephosphorizing agent composition and method for removing phosphor from water by using the same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898058A (en) * | 2010-07-22 | 2010-12-01 | 淮阴工学院 | Preparation method of low-temperature sintered attapulgite-based direct drinking water filter material |
| CN102958849A (en) * | 2011-06-28 | 2013-03-06 | 株式会社安积理研 | Water treatment system |
| FR2985200A1 (en) * | 2012-01-03 | 2013-07-05 | Cie Financiere Et De Participations Roullier | PHOSPHATE - BASED GRANULAR MATERIAL, METHOD FOR MANUFACTURING THE SAME AND USE THEREOF IN A DEVICE FOR DEPHOSPHATION OF WASTEWATER. |
| CN105858776A (en) * | 2016-04-07 | 2016-08-17 | 合肥市市政设计院有限公司 | Method for removing phosphates in water body on basis of sulfuric-acid-modified fly ash brick powder (S-FABP) |
| KR101889884B1 (en) * | 2017-12-08 | 2018-08-21 | 한국건설기술연구원 | Multi-functional apparatus for reducing non-point pollution source integrated with phosphorus removal function |
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| JP2000157968A (en) * | 1998-11-27 | 2000-06-13 | Mitsubishi Materials Corp | Dephosphorization material |
| JP2001029962A (en) * | 1999-07-26 | 2001-02-06 | Oji Cornstarch Kk | Phosphorous-in-water scavenger and its production |
| JP2001205276A (en) * | 2000-01-21 | 2001-07-31 | Sekisui Chem Co Ltd | Dephosphorization material and method for dephosphorizing wastewater |
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2001
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000157968A (en) * | 1998-11-27 | 2000-06-13 | Mitsubishi Materials Corp | Dephosphorization material |
| JP2001029962A (en) * | 1999-07-26 | 2001-02-06 | Oji Cornstarch Kk | Phosphorous-in-water scavenger and its production |
| JP2001205276A (en) * | 2000-01-21 | 2001-07-31 | Sekisui Chem Co Ltd | Dephosphorization material and method for dephosphorizing wastewater |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898058A (en) * | 2010-07-22 | 2010-12-01 | 淮阴工学院 | Preparation method of low-temperature sintered attapulgite-based direct drinking water filter material |
| CN102958849A (en) * | 2011-06-28 | 2013-03-06 | 株式会社安积理研 | Water treatment system |
| FR2985200A1 (en) * | 2012-01-03 | 2013-07-05 | Cie Financiere Et De Participations Roullier | PHOSPHATE - BASED GRANULAR MATERIAL, METHOD FOR MANUFACTURING THE SAME AND USE THEREOF IN A DEVICE FOR DEPHOSPHATION OF WASTEWATER. |
| WO2013102729A1 (en) * | 2012-01-03 | 2013-07-11 | Compagnie Financiere Et De Participations Roullier | Phosphate-based granular material, process for manufacturing same and use thereof in a device for removing phosphates from wastewaters |
| CN105858776A (en) * | 2016-04-07 | 2016-08-17 | 合肥市市政设计院有限公司 | Method for removing phosphates in water body on basis of sulfuric-acid-modified fly ash brick powder (S-FABP) |
| KR101889884B1 (en) * | 2017-12-08 | 2018-08-21 | 한국건설기술연구원 | Multi-functional apparatus for reducing non-point pollution source integrated with phosphorus removal function |
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