JPS6216683B2 - - Google Patents
Info
- Publication number
- JPS6216683B2 JPS6216683B2 JP4036879A JP4036879A JPS6216683B2 JP S6216683 B2 JPS6216683 B2 JP S6216683B2 JP 4036879 A JP4036879 A JP 4036879A JP 4036879 A JP4036879 A JP 4036879A JP S6216683 B2 JPS6216683 B2 JP S6216683B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- tank
- flocculant
- present
- scraper
- 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
- 239000010802 sludge Substances 0.000 claims description 31
- 238000004062 sedimentation Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000002562 thickening agent Substances 0.000 description 7
- 239000008394 flocculating agent Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002717 polyvinylpyridine Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
本発明は、沈降分離装置における集泥方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for collecting sludge in a sedimentation separator.
従来、シツクナー、クラリフアイヤー等の沈降
分離装置において各種の汚濁水等を処理し、槽底
に沈降したスラツジを排泥口より抜き取つてい
る。しかしながら沈降分離装置の槽底に沈降した
スラツジはスクレーパーを用いて排泥口に掻き寄
せてもスラツジが微細粒子であるため、所期の目
的が達成できずせいぜい排泥口近傍部のスラツジ
が抜き取られる程度であつた。従つて、従来はこ
のスラツジの抜き取り作業を頻繁に行わなければ
ならない欠点があつた。 Conventionally, various types of polluted water are treated in sedimentation separators such as thickeners and clarifiers, and the sludge that has settled at the bottom of the tank is extracted from a sludge port. However, even if the sludge that has settled to the bottom of the tank of the sedimentation separator is scraped up to the sludge outlet using a scraper, the sludge is fine particles, so the intended purpose cannot be achieved, and at most the sludge near the sludge outlet is scraped out. It was warm enough. Therefore, in the past, this sludge had to be removed frequently.
本発明者はこのような従来法における欠点を解
決すべく種々研究を重ねた結果、沈降分離装置の
排泥口より遠い距離にあるスラツジ中に凝集剤を
添加することによつて集泥効率を著しく高めるこ
とに成功した。 As a result of various studies aimed at solving the drawbacks of the conventional methods, the inventor of the present invention has developed a method to improve sludge collection efficiency by adding a coagulant to the sludge located far from the sludge outlet of the sedimentation separator. succeeded in increasing it significantly.
一般に、シツクナー、クラリフアイヤー等の沈
降分離装置は排泥口にスラツジを集泥し易いよう
に排泥口に向つて槽底に勾配が付けられている。
本発明はこのような沈降分離装置の排泥口より遠
い距離、換言すれば前記勾配を有する槽底部の一
番高い部分に凝集剤を添加することによつて、従
来掻き寄せ不可能なスラツジの粒子を凝集せし
め、これを撹拌することによつて槽底に沈降した
スラツジ全体を掻き寄せ可能ならしめ、一回の排
泥作業で槽底に集積したスラツジをほぼ完全に排
泥することを可能としたものである。 In general, sedimentation separators such as thickeners and clarifiers have a tank bottom sloped toward the sludge port so that sludge can be easily collected at the sludge port.
The present invention is capable of removing sludge, which could not be scraped in the past, by adding a flocculant at a distance far from the sludge outlet of such a sedimentation separator, in other words, at the highest part of the sloped bottom of the tank. By agglomerating the particles and stirring them, it is possible to scrape up the entire sludge that has settled on the bottom of the tank, making it possible to almost completely remove the sludge that has accumulated on the bottom of the tank in one sludge removal operation. That is.
本発明方法に使用される凝集剤としては硫酸バ
ンド，鉄塩（硫酸第一鉄，硫酸第二鉄，塩化第二
鉄），ポリ塩化アルミニウム，ポリ硫酸アルミニ
ウム等の無機凝集剤、アルギン酸ソーダ，ポリア
クリル酸ソーダ，水溶性アニリン樹脂塩酸塩，ポ
リビニルピリジン塩酸塩，ポリアクリルアミド，
ゼラチン等の有機凝集剤が挙げられる。これらの
凝集剤はスラツジの性状に応じて一種またはそれ
以上を適宜組合せて使用すればよい。 The flocculants used in the method of the present invention include inorganic flocculants such as bandate sulfate, iron salts (ferrous sulfate, ferric sulfate, ferric chloride), polyaluminum chloride, polyaluminum sulfate, sodium alginate, polyester, etc. Sodium acrylate, water-soluble aniline resin hydrochloride, polyvinylpyridine hydrochloride, polyacrylamide,
Examples include organic flocculants such as gelatin. One or more of these flocculants may be used in an appropriate combination depending on the properties of the sludge.
次に本発明を図面により説明する。 Next, the present invention will be explained with reference to the drawings.
添付図は中央駆動型シツクナーＡの概略断面図
を示したものである。 The attached figure shows a schematic cross-sectional view of the central drive type thickener A.
シツクナーＡの槽底にスラツジ１が集積したと
ころで例えばスクレーパートラス２に配設された
凝集剤注入管３の先端部イの小孔から凝集剤を添
加する。スラツジに添加された凝集剤はスクレー
パートラス２の回転にともない、その下端に設け
られたスクレーパー４により撹拌され凝集作用を
起こして微細粒子がフロツク化する。このように
してフロツク化されたスラツジは槽底部が排泥口
５に向つて勾配を有していること及びスクレーパ
ートラスの回転によつて順次排泥口５に向つて集
泥され、その過程において槽底部に集泥されたス
ラツジのフロツク化を行う。また凝集剤注入管３
はスクレーパートラスに配設することなくシツク
ナーの周壁部に固定して設けてもよい。この場合
の凝集剤注入管３はシツクナー周壁部の複数個所
に設置することが好ましい。 When the sludge 1 has accumulated on the bottom of the tank of the thickener A, a flocculant is added, for example, through a small hole at the tip of a flocculant injection pipe 3 disposed in the scraper truss 2. As the scraper truss 2 rotates, the flocculant added to the sludge is agitated by a scraper 4 provided at the lower end of the scraper truss 2, causing a flocculating action and causing fine particles to become flocs. The sludge thus flocculated is sequentially collected toward the sludge port 5 due to the fact that the bottom of the tank has a slope toward the sludge port 5 and the rotation of the scraper truss. The sludge collected at the bottom of the tank is turned into flocculation. Also, flocculant injection pipe 3
may be fixed to the peripheral wall of the thickener instead of being disposed on the scraper truss. In this case, it is preferable that the flocculant injection pipes 3 are installed at a plurality of locations on the peripheral wall of the thickener.
前記したような本発明方法の処理を施すことに
よつて従来困難とされていたスラツジの排泥作業
が極めて簡単に行える利点がある。 By carrying out the treatment according to the method of the present invention as described above, there is an advantage that the sludge removal work, which has been considered difficult in the past, can be carried out extremely easily.
添付図は本発明方法の一実施態様を示す中央駆
動型シツクナーの概略を示した断面図である。
The accompanying drawing is a schematic cross-sectional view of a centrally driven thickener showing one embodiment of the method of the present invention.
Claims (1)
泥において、該沈降分離装置の排泥口より遠い距
離にあるスラツジ中に凝集剤を添加することを特
徴とする沈降分離装置における集泥方法。1. A method for collecting sludge in a sedimentation separator, which comprises adding a flocculant to the sludge at a distance from the sludge outlet of the sedimentation separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4036879A JPS55134612A (en) | 1979-04-05 | 1979-04-05 | Collecting method for sludge in sedimentation separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4036879A JPS55134612A (en) | 1979-04-05 | 1979-04-05 | Collecting method for sludge in sedimentation separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55134612A JPS55134612A (en) | 1980-10-20 |
| JPS6216683B2 true JPS6216683B2 (en) | 1987-04-14 |
Family
ID=12578691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4036879A Granted JPS55134612A (en) | 1979-04-05 | 1979-04-05 | Collecting method for sludge in sedimentation separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55134612A (en) |
-
1979
- 1979-04-05 JP JP4036879A patent/JPS55134612A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55134612A (en) | 1980-10-20 |
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