JPS6319211B2 - - Google Patents

Info

Publication number
JPS6319211B2
JPS6319211B2 JP59205285A JP20528584A JPS6319211B2 JP S6319211 B2 JPS6319211 B2 JP S6319211B2 JP 59205285 A JP59205285 A JP 59205285A JP 20528584 A JP20528584 A JP 20528584A JP S6319211 B2 JPS6319211 B2 JP S6319211B2
Authority
JP
Japan
Prior art keywords
phosphorus
agent
present
magnesium carbonate
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
Application number
JP59205285A
Other languages
Japanese (ja)
Other versions
JPS6182840A (en
Inventor
Yoshishige Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP20528584A priority Critical patent/JPS6182840A/en
Publication of JPS6182840A publication Critical patent/JPS6182840A/en
Publication of JPS6319211B2 publication Critical patent/JPS6319211B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Removal Of Specific Substances (AREA)
  • Water Treatment By Sorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

〔技術分野〕 本発明は新規なリン除去剤に関するものであ
る。 〔従来技術〕 リン酸塩は、水質の富栄養化現象をもたらす原
因物質となることから、工業排水はもちろん、下
水生活排水、産業排水、その他の汚染水からリン
酸塩を除去することが必要である。 従来、排水中からのリンを除去する方法として
は種々の方法が知られているが、いずれもコスト
的に未だ満足し得るものはなく、安価なリン除去
剤の開発が望まれている。 〔目的〕 本発明は、安価なリン除去剤を提供することを
目的とする。 〔構成〕 本発明によれば、マグネシウムの炭酸塩を主剤
とするリン除去剤が提供される。 本発明のリン除去剤は、マグネシウムの炭酸塩
を主剤とする。本発明の場合、このような炭酸塩
としては、天然に産出する鉱物、例えば、マグネ
サイト等を用いることができるため、本発明のリ
ン除去剤は、非常に安価に得ることができる。こ
のようなマグネシウムを含む炭酸塩は、微粉末
状、顆粒状等の種々の形状で用いることができる
が、微粉末状で用いるのが好ましい。 本発明のリン除去剤は、カルシウム化合物を助
剤として併用するのが好ましい。この場合、カル
シウム化合物としては、塩化カルシウム、酸化カ
ルシウム、水酸化カルシウムなどの種々のものを
使用でき、その使用量は、前記炭酸塩100重量部
に対し、0.05〜５重量部、好ましくは0.1〜２重
量部の割合である。このカルシウム化合物は、前
記炭酸塩との混合物の形で使用し得る他、別途、
リン含有水に添加することもできる。 本発明のリン除去剤を用いて水中に溶解するリ
ンを除去するには、本発明のリン除去剤に対し、
リンを含む水を接触させればよい。この場合、リ
ン除去剤とリン含有水との接触方式としては、リ
ン含有水中にリン除去剤を投入する方式の他、リ
ン除去剤を充填したカラムにリン含有水を流通さ
せる方式等がある。リン含有水にリン除去剤を投
入してリンの除去を行う場合、リン含有水に対す
るリン除去剤の使用割合は、通常0.1〜10重量％、
好ましくは0.5〜５重量％である。処理時間は、
通常30分〜３時間分程度である。 〔効果〕 本発明のリン除去剤は、リンを含む種々の排水
からのリンの除去に適用される。この場合、リン
を吸着したリン除去剤は、吸着したリン成分はク
溶性のものであるため、リン肥料として有効利用
することができる。 〔実施例〕 次に本発明を実施例によりさらに詳細に説明す
る。 実施例 １ リン除去剤として市販の炭酸マグネシウム
（〔Mg（CO3）〕4・Mg（OH）2）（粒度200メツシユ以
下）0.5ｇ及び補助添加剤としての種々の量の塩
化カルシウムを、リン化合物としてリン酸水素ナ
トリウム（NaHPO4）0.001モルを水100mlに溶解
した水溶液に添加し、２時間撹拌混合した後、炭
酸マグネシウムを濾別し、濾液中の残留PO4 3-を
測定し、その測定結果に基づいてリン除去率を算
出した。その結果を次表に示す。 [Technical Field] The present invention relates to a novel phosphorus removal agent. [Prior art] Phosphates are a causative agent of water eutrophication, so it is necessary to remove them from not only industrial wastewater, but also sewage domestic wastewater, industrial wastewater, and other contaminated water. It is. Conventionally, various methods have been known for removing phosphorus from wastewater, but none of them are yet satisfactory in terms of cost, and there is a desire to develop an inexpensive phosphorus removal agent. [Objective] An object of the present invention is to provide an inexpensive phosphorus removal agent. [Structure] According to the present invention, a phosphorus removing agent containing magnesium carbonate as a main ingredient is provided. The phosphorus removing agent of the present invention uses magnesium carbonate as a main ingredient. In the case of the present invention, naturally occurring minerals such as magnesite can be used as such carbonates, so the phosphorus removing agent of the present invention can be obtained at a very low cost. Such a carbonate containing magnesium can be used in various forms such as fine powder and granules, but it is preferable to use it in fine powder form. The phosphorus removing agent of the present invention is preferably used in combination with a calcium compound as an auxiliary agent. In this case, various calcium compounds such as calcium chloride, calcium oxide, and calcium hydroxide can be used as the calcium compound, and the amount used is 0.05 to 5 parts by weight, preferably 0.1 to 5 parts by weight, based on 100 parts by weight of the carbonate. The proportion is 2 parts by weight. This calcium compound can be used in the form of a mixture with the carbonate, and can also be used separately.
It can also be added to phosphorus-containing water. In order to remove phosphorus dissolved in water using the phosphorus remover of the present invention, for the phosphorus remover of the present invention,
All you have to do is bring it into contact with water containing phosphorus. In this case, methods for bringing the phosphorus removing agent into contact with the phosphorus-containing water include a method in which the phosphorus removing agent is introduced into the phosphorus-containing water, and a method in which the phosphorus-containing water is passed through a column filled with the phosphorus removing agent. When removing phosphorus by adding a phosphorus remover to phosphorus-containing water, the ratio of the phosphorus remover to the phosphorus-containing water is usually 0.1 to 10% by weight.
Preferably it is 0.5 to 5% by weight. The processing time is
Usually it takes about 30 minutes to 3 hours. [Effect] The phosphorus removal agent of the present invention is applicable to the removal of phosphorus from various wastewaters containing phosphorus. In this case, the phosphorus remover that has adsorbed phosphorus can be effectively used as a phosphorus fertilizer because the adsorbed phosphorus component is soluble. [Example] Next, the present invention will be explained in more detail with reference to Examples. Example 1 0.5 g of commercially available magnesium carbonate ([Mg(CO 3 )] 4 ·Mg(OH) 2 ) (particle size 200 mesh or less) as a phosphorus remover and various amounts of calcium chloride as an auxiliary additive were used to remove phosphorus. Add 0.001 mol of sodium hydrogen phosphate (NaHPO 4 ) as a compound to an aqueous solution dissolved in 100 ml of water, stir and mix for 2 hours, filter out magnesium carbonate, measure the residual PO 4 3- in the filtrate, and The phosphorus removal rate was calculated based on the measurement results. The results are shown in the table below.

【表】 実施例 ２ 実施例１において、NaHPO4の濃度を0.01モ
ル／100mlとし、炭酸マグネシウムの添加量を2.0
ｇ／100mlとし、塩化カルシウム無添加とした以
外は同様にして実験を行つた。この場合、撹拌時
間２時間で、95％のリン除去率が得られた。[Table] Example 2 In Example 1, the concentration of NaHPO 4 was 0.01 mol/100 ml, and the amount of magnesium carbonate added was 2.0 mol/100 ml.
The experiment was carried out in the same manner except that the concentration was 100 g/100 ml and no calcium chloride was added. In this case, a phosphorus removal rate of 95% was obtained with stirring time of 2 hours.

Claims (1)

【特許請求の範囲】 １ マグネシウムの炭酸塩を主剤とするリン除去
剤。 ２ マグネシウムの炭酸塩を主剤とし、カルシウ
ム化合物を助剤とするリン除去剤。[Claims] 1. A phosphorus removal agent containing magnesium carbonate as a main ingredient. 2. A phosphorus removal agent that uses magnesium carbonate as the main agent and a calcium compound as an auxiliary agent.
JP20528584A 1984-09-29 1984-09-29 Phosphorus removing agent Granted JPS6182840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20528584A JPS6182840A (en) 1984-09-29 1984-09-29 Phosphorus removing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20528584A JPS6182840A (en) 1984-09-29 1984-09-29 Phosphorus removing agent

Publications (2)

Publication Number Publication Date
JPS6182840A JPS6182840A (en) 1986-04-26
JPS6319211B2 true JPS6319211B2 (en) 1988-04-21

Family

ID=16504440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20528584A Granted JPS6182840A (en) 1984-09-29 1984-09-29 Phosphorus removing agent

Country Status (1)

Country Link
JP (1) JPS6182840A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08145605A (en) * 1994-11-22 1996-06-07 Toyo Consultant Kk Crack indicator finger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08257591A (en) * 1995-03-23 1996-10-08 Ube Chem Ind Co Ltd Removal of water-bloom and method and device for controlling abnormal generation thereof
JP5562994B2 (en) * 2012-03-15 2014-07-30 株式会社東芝 Ammonia nitrogen and phosphorus recovery agent and method for producing the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451989A (en) * 1977-10-01 1979-04-24 Agency Of Ind Science & Technol Method of activating magnesia type water disposal agent
JPS5531404A (en) * 1978-08-16 1980-03-05 Agency Of Ind Science & Technol Preparing adsorbent
JPS5771693A (en) * 1980-10-21 1982-05-04 Katayama Chem Works Co Ltd Method of removing phosphate ion contained in liquid
JPS57130587A (en) * 1981-02-02 1982-08-13 Matsushita Electric Ind Co Ltd Removal of phosphorus in water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08145605A (en) * 1994-11-22 1996-06-07 Toyo Consultant Kk Crack indicator finger

Also Published As

Publication number Publication date
JPS6182840A (en) 1986-04-26

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EXPY Cancellation because of completion of term