JPS62140613A - Granular filter medium - Google Patents
Granular filter mediumInfo
- Publication number
- JPS62140613A JPS62140613A JP27948985A JP27948985A JPS62140613A JP S62140613 A JPS62140613 A JP S62140613A JP 27948985 A JP27948985 A JP 27948985A JP 27948985 A JP27948985 A JP 27948985A JP S62140613 A JPS62140613 A JP S62140613A
- Authority
- JP
- Japan
- Prior art keywords
- filter medium
- algae
- copper
- granular
- nickel
- 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
Abstract
Description
【発明の詳細な説明】
工又↓皇且且立…
本発明は、浮遊物質を含む水の一過に使用する粒状ｒ材
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a granular r-material used for temporarily evaporating water containing suspended solids.
従来旦瑳五
浮遊物質を含む原水を一過する一過装置には、流れ方向
で分類すると、上向流方式、下向流方式、横向流方式、
三方向流方式等があり、また、ｒ過方式で分類すると、
圧力式、重力式、連続移動床式等があるが、いずれの場
合にも、−過材としては、砂、アンスラサイト、ガーネ
ット等の粒状を材を用いている。Traditionally, there are three types of passing-through devices that pass through raw water containing suspended solids: upward flow type, downward flow type, horizontal flow type,
There are three-way flow methods, etc., and when classified by r-flow method,
There are pressure type, gravity type, continuous moving bed type, etc., but in all cases, granular material such as sand, anthracite, garnet, etc. is used as the overfill material.
■く７フパ、占
しかしながら、原水中の浮遊物質が無機物だけでなく、
有機物も含む場合には、浮遊物質の粘着性が高いため、
を層での捕集の際に、浮遊物質がｔ層表面に付着しやす
く、長時間の運転により粒状ｒ材の表面に藻類が発生す
ることが多い。そのため、を層の目づまりを起こしやす
く、−過能力の低下を起こす。この対策としては、水や
空気による逆洗や粒状ｒ材の表面洗浄を行う等の物理的
方法の他に、原水に塩素系消毒剤を注入して藻類の発生
を抑制している。しかし、このような対策には、逆洗回
数の増加による処理水量の回収不足及び消毒剤使用によ
るコストアンプ等の欠点がある。■7 Fupa, fortune telling However, suspended solids in raw water are not only inorganic substances,
If organic matter is also included, the stickiness of suspended solids is high;
When collecting in the t-layer, suspended solids tend to adhere to the surface of the t-layer, and algae often grow on the surface of the granular r-material during long-term operation. Therefore, clogging of the layer is likely to occur, resulting in a decrease in overcapacity. Countermeasures include physical methods such as backwashing with water or air and surface cleaning of granular materials, as well as injecting chlorine-based disinfectants into raw water to suppress the growth of algae. However, such measures have drawbacks such as insufficient recovery of the amount of treated water due to an increase in the number of backwashes and increased costs due to the use of disinfectants.
従って、本発明は、前記従来技術の欠点を解消し、表面
での藻類の発生を防止し、藻類の発生による目づまりを
起こさない粒状ｒ材を提供することを目的とする。Therefore, it is an object of the present invention to provide a granular material that eliminates the drawbacks of the prior art, prevents the growth of algae on the surface, and does not cause clogging due to the growth of algae.
刑−到ｊ焦乞脆火ま」ためｑ１役
本発明は、粒状Ｐ材の表面に銅等の金属コーティングを
設けることによって前記の問題点を解決したものである
。The present invention solves the above-mentioned problems by providing a metal coating such as copper on the surface of the granular P material.
即ち、本発明による粒状ＩＰ材は、砂、アンスラサイト
、ガーネット等の粒状体の表面に金属のコーティング層
を有することを特徴とする。That is, the granular IP material according to the present invention is characterized by having a metal coating layer on the surface of the granular material such as sand, anthracite, or garnet.
コーティング層の層厚は、一般に５〜５０μとする。The thickness of the coating layer is generally 5 to 50 microns.
コーティング層に用いる金属としては、例えば銅、銀、
ニッケル等が挙げられる。Examples of metals used in the coating layer include copper, silver,
Examples include nickel.
粒状体をコーティングする方法としては、粒状体の材質
によっても異なるが、メッキ法又は金属塩の溶液に還元
剤を添加してｔ材表面に金属を逼元析出させる方法等が
ある。Methods for coating the granules vary depending on the material of the granules, but include a plating method or a method in which a reducing agent is added to a solution of a metal salt to precipitate metal on the surface of the t-material.
金属塩としては、硫酸銅、硝酸銅、硝酸銀、塩化ニッケ
ル、硫酸ニッケル等が挙げられ、還元剤としては、ホル
マリン、次亜リン酸塩等が挙げられる。Examples of the metal salt include copper sulfate, copper nitrate, silver nitrate, nickel chloride, nickel sulfate, etc., and examples of the reducing agent include formalin, hypophosphite, etc.
道り刊
金属コーティング層の金属又は微量の金属が熔解して生
じる金属イオンは、液中で微生物の活性を抑制し、滅菌
作用を及ぼし、粒状：戸材表面での藻類の発生を防止す
る。Metal ions produced by melting the metal or trace amounts of metal in the metal coating layer suppress the activity of microorganisms in the liquid, exert a sterilizing effect, and prevent the growth of algae on the surface of granular door materials.
尤施凱
次に、実施例に基づいて本発明を詳述するが、本発明は
これに限定されるものではない。EXAMPLES Next, the present invention will be described in detail based on Examples, but the present invention is not limited thereto.
実施例１
亘伏を林夏皿遺
（１） 平均粒径０．６５鰭の砂５００ｇに前処理を施
し、表面にパラジウムを形成させた後、０．９％硫酸銅
水溶液中に入れ、水酸化すｌ−ＩＪウム水溶液を添加し
てアルカリ性に調整した後、攪拌下にホルマリン２〜３
ｍｇ／ｆｆを添加した。Example 1 After pre-treating 500 g of sand with an average grain size of 0.65 to form palladium on the surface, it was placed in a 0.9% copper sulfate aqueous solution and mixed with water. After adjusting the alkalinity by adding sulfur-IJium oxide aqueous solution, add 2 to 3 ml of formalin while stirring.
mg/ff was added.
（２）平均粒径１．５朧麿のアンスラサイト４００ｇを
用いて、（１）と同様にして銅コーテイングを施す。(2) Copper coating is applied in the same manner as in (1) using 400 g of anthracite with an average particle size of 1.5 mm.
凰氷夏を遇
得られた銅コーテイング層を有する砂及びアンスラサイ
トをｒ過器にそれぞれ屓ＦＪ ４０ ｃｍ及び６Ｑｃｍ
に積層し、２０〜３０■／ｉのＳＳを含む原水を？過し
た。この−過器で約４０００時間連続ｒ遇してもｔ材表
面に藻類が発生せず、目づまりを起こさなかった。Sand and anthracite with a copper coating layer obtained during the winter season were passed through a filter with a thickness of FJ 40 cm and 6 Q cm, respectively.
raw water containing 20 to 30 ■/i of SS? passed. Even after approximately 4,000 hours of continuous running in this strainer, algae did not grow on the surface of the T material and no clogging occurred.
光匪■立平
本発明による粒状ｒ材を使用すれば、を材表面での藻類
の発生が防止され、藻類による目づまりを起こすことな
く、長時間？過を行うことができる。また、−過の際に
、消毒剤を必要としないので、ランニングコストが低減
される。By using the granular R material according to the present invention, the growth of algae on the surface of the material can be prevented, and it can be used for a long time without causing clogging due to algae. You can do the following. Furthermore, since no disinfectant is required during cleaning, running costs are reduced.
Claims (2)
面に金属のコーティング層を有することを特徴とする粒
状ろ材。(1) A granular filter medium characterized by having a metal coating layer on the surface of a granular material such as sand, anthracite, or garnet.
第１項記載の粒状ろ材。(2) The granular filter medium according to claim 1, wherein the metal is copper, silver, nickel, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27948985A JPS62140613A (en) | 1985-12-12 | 1985-12-12 | Granular filter medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27948985A JPS62140613A (en) | 1985-12-12 | 1985-12-12 | Granular filter medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62140613A true JPS62140613A (en) | 1987-06-24 |
Family
ID=17611755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27948985A Pending JPS62140613A (en) | 1985-12-12 | 1985-12-12 | Granular filter medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62140613A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005055718A1 (en) * | 2003-12-11 | 2005-06-23 | Yoshiaki Maeda | Ag-BEARING PARTICLE AND PROCESS FOR PRODUCING THE SAME |
| AU2004237825B2 (en) * | 2003-12-11 | 2010-09-09 | Yoshiaki Maeda | Silver carrying particles and producing method thereof |
-
1985
- 1985-12-12 JP JP27948985A patent/JPS62140613A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005055718A1 (en) * | 2003-12-11 | 2005-06-23 | Yoshiaki Maeda | Ag-BEARING PARTICLE AND PROCESS FOR PRODUCING THE SAME |
| JPWO2005055718A1 (en) * | 2003-12-11 | 2007-07-05 | 前田 芳聰 | Silver-carrying particles and method for producing the same |
| US7487876B2 (en) * | 2003-12-11 | 2009-02-10 | Yoshiaki Maeda | Particles with silver carried and producing method thereof |
| AU2004237825B2 (en) * | 2003-12-11 | 2010-09-09 | Yoshiaki Maeda | Silver carrying particles and producing method thereof |
| AU2004237825B8 (en) * | 2003-12-11 | 2010-09-23 | Yoshiaki Maeda | Silver carrying particles and producing method thereof |
| JP4686363B2 (en) * | 2003-12-11 | 2011-05-25 | 芳聰 前田 | Silver-carrying particles and method for producing the same |
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