JPS6340575B2 - - Google Patents
Info
- Publication number
- JPS6340575B2 JPS6340575B2 JP59205286A JP20528684A JPS6340575B2 JP S6340575 B2 JPS6340575 B2 JP S6340575B2 JP 59205286 A JP59205286 A JP 59205286A JP 20528684 A JP20528684 A JP 20528684A JP S6340575 B2 JPS6340575 B2 JP S6340575B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphorus
- agent
- calcium
- remover
- weight
- 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
- 239000011574 phosphorus Substances 0.000 claims description 39
- 229910052698 phosphorus Inorganic materials 0.000 claims description 39
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 38
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 239000010459 dolomite Substances 0.000 claims description 7
- 229910000514 dolomite Inorganic materials 0.000 claims description 7
- 239000002075 main ingredient Substances 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 229940043430 calcium compound Drugs 0.000 claims description 5
- 150000001674 calcium compounds Chemical class 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 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
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 231100000676 disease causative agent Toxicity 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 229910000397 disodium phosphate Inorganic materials 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- -1 phosphorus compound Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
〔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、カル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が
提供される。
本発明のリン除去剤は、カルシウムの炭酸塩を
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、ドロマイ
ト、石灰岩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。このようなカル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
剤とするが、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、炭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、カルシウムの炭酸塩
として、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
エン酸可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
リン除去剤主剤として、下記性状のドロマイト
を用いた。
CaO：22.90重量％
MgO：22.21重量％
CO2：47.77重量％
FeO：0.08重量％
粘度：200メツシユ以下
リン除去剤主剤として、前記ドロマイト0.5ｇ
及び補助添加剤として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、ドロマイト
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。なお、処理液のPHは６〜７であ
つた。
[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, there is provided a phosphorus removing agent containing a calcium carbonate as a main ingredient and a calcium compound as an auxiliary agent. The phosphorus removing agent of the present invention has calcium carbonate as its main ingredient. In the case of the present invention, naturally occurring minerals such as dolomite and limestone can be used as such carbonates, so the phosphorus removing agent of the present invention can be obtained at a very low cost. Such carbonate containing calcium 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 uses a calcium compound as an auxiliary agent. In this case, various calcium compounds such as calcium chloride, calcium oxide, calcium hydroxide, etc. can be used, and the amount used is determined by the amount of the above-mentioned carbonate. The proportion is 0.05 to 5 parts by weight, preferably 0.1 to 2 parts by weight, per 100 parts by weight of salt.
This calcium compound can be used in the form of a mixture with carbonate or can be added separately 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 0.5 to 5% by weight as calcium carbonate.
Weight%. The processing time is usually 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 in citric acid. [Example] Next, the present invention will be explained in more detail with reference to Examples. Example 1 Dolomite having the following properties was used as the main ingredient of a phosphorus remover. CaO: 22.90% by weight MgO: 22.21% by weight CO 2 : 47.77% by weight FeO: 0.08% by weight Viscosity: 200 mesh or less 0.5g of the above dolomite as the main ingredient of the phosphorus remover
and various amounts of calcium chloride as an auxiliary additive were added to an aqueous solution of 0.001 mol of sodium hydrogen phosphate (NaHPO 4 ) as a phosphorus compound dissolved in 100 ml of water, and after stirring and mixing for 2 hours, the dolomite was filtered off. The residual PO 4 3- in the filtrate was measured, and the phosphorus removal rate was calculated based on the measurement results. The results are shown in the table below. Note that the pH of the treatment liquid was 6 to 7.
【表】
実施例 ２
実施例１においてドロマイトに代えて市販の炭
酸カルシウムを用いた以外は同様にして実験を行
つた。その結果を次表に示す。[Table] Example 2 An experiment was conducted in the same manner as in Example 1 except that commercially available calcium carbonate was used instead of dolomite. The results are shown in the table below.
【表】
実施例 ３
リン除去剤主剤としてドロマイトを、補助添加
剤として水酸化カルシウムを用いた。[Table] Example 3 Dolomite was used as the main ingredient of the phosphorus remover, and calcium hydroxide was used as the auxiliary additive.
【表】
実施例 ４
リン除去剤主剤として炭酸カルシウムを、補助
添加剤として水酸化カルシウムを用いた。[Table] Example 4 Calcium carbonate was used as the main ingredient of the phosphorus remover, and calcium hydroxide was used as the auxiliary additive.
Claims (1)
化合物を助剤とするリン除去剤。 ２ 主剤がドロマイトである特許請求の範囲第１
項のリン除去剤。[Scope of Claims] 1. A phosphorus removal agent containing calcium carbonate as a main agent and a calcium compound as an auxiliary agent. 2 Claim 1 in which the main ingredient is dolomite
Phosphorus remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20528684A JPS6182841A (en) | 1984-09-29 | 1984-09-29 | Phosphorus removing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20528684A JPS6182841A (en) | 1984-09-29 | 1984-09-29 | Phosphorus removing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6182841A JPS6182841A (en) | 1986-04-26 |
| JPS6340575B2 true JPS6340575B2 (en) | 1988-08-11 |
Family
ID=16504456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20528684A Granted JPS6182841A (en) | 1984-09-29 | 1984-09-29 | Phosphorus removing agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6182841A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0677732B2 (en) * | 1986-07-29 | 1994-10-05 | 新鉱工業株式会社 | Adsorbent for water treatment and method for producing the same |
| US6627083B2 (en) * | 1996-10-07 | 2003-09-30 | A.S. Norsk Leca | Light expanded clay aggregates for phosphorous removal |
| ATE523248T1 (en) * | 2007-03-21 | 2011-09-15 | Omya Development Ag | SURFACE TREATED CALCIUM CARBONATE AND USE THEREOF FOR WASTEWATER TREATMENT |
| JP5618064B2 (en) * | 2010-08-03 | 2014-11-05 | 国立大学法人金沢大学 | Phosphorus recovery agent and drainage purification method using the same |
| JP7210049B2 (en) * | 2018-03-30 | 2023-01-23 | 国立大学法人 新潟大学 | Sludge treatment method, sludge treatment system and adsorbent manufacturing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50157299A (en) * | 1974-03-19 | 1975-12-19 | ||
| JPS5232639A (en) * | 1975-09-09 | 1977-03-12 | Toshiba Corp | Stamp detection equipment |
| JPS5712892A (en) * | 1980-06-25 | 1982-01-22 | Ebara Infilco Co Ltd | Disposal of phosphate ion-containing waste water |
-
1984
- 1984-09-29 JP JP20528684A patent/JPS6182841A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50157299A (en) * | 1974-03-19 | 1975-12-19 | ||
| JPS5232639A (en) * | 1975-09-09 | 1977-03-12 | Toshiba Corp | Stamp detection equipment |
| JPS5712892A (en) * | 1980-06-25 | 1982-01-22 | Ebara Infilco Co Ltd | Disposal of phosphate ion-containing waste water |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6182841A (en) | 1986-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |