JP3134087B2 - Mud water purification method - Google Patents
Mud water purification methodInfo
- Publication number
- JP3134087B2 JP3134087B2 JP03240146A JP24014691A JP3134087B2 JP 3134087 B2 JP3134087 B2 JP 3134087B2 JP 03240146 A JP03240146 A JP 03240146A JP 24014691 A JP24014691 A JP 24014691A JP 3134087 B2 JP3134087 B2 JP 3134087B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- permeable material
- permeable
- sheet
- muddy 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、砂利採石場、河川の流
域を広げる浚渫工事、港湾の浚渫工事等で生じる土砂粒
を含む泥水、山地の宅地造成、ゴルフ場造成時に降った
雨や涌き水により発生した泥水（濁水）を沈澱池を通し
て浄化する泥水の浄化方法に関する。The present invention relates to a gravel quarry, a dredging work for widening a river basin, a muddy water containing sediment particles generated in a dredging work for a harbor, etc., the development of a residential area in a mountainous area, and the rainfall and spring water generated during the construction of a golf course. The present invention relates to a method for purifying muddy water, which purifies muddy water (turbid water) generated through the sedimentation basin.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】河川の
拡張工事やゴルフ場の造成工事のような土木・建設工事
等で発生した泥水を一時的に沈澱池に溜め、泥水中に含
まれている土砂等を除去する方法として、石、土砂等の
比較的重いものを沈澱させた後、化学凝集剤を散布して
粘土等の浮遊粒子を沈澱させる方法が行われているが、
浄化した水を河川等に戻した際、河川の生態系が破壊さ
れて魚介類に悪影響を与えるといった懸念がある。一
方、沈澱池のせき上に濾過材を設置して浮遊物を除去す
る方法も知られているが、目詰まりが生じ易い等効果が
十分でない。2. Description of the Related Art Mud water generated during civil engineering and construction work such as river expansion work and golf course construction work is temporarily stored in a sedimentation basin and contained in mud water. As a method of removing sediment, there is a method of precipitating relatively heavy substances such as stone, earth and sand, and then spraying a chemical flocculant to precipitate suspended particles such as clay.
When returning purified water to rivers and the like, there is a concern that the ecosystem of the river will be destroyed and adversely affect fish and shellfish. On the other hand, a method of removing a suspended matter by installing a filtering material on a weir of a sedimentation basin is also known, but the effect is not sufficient, such as easy clogging.
【０００３】本発明はこのような問題を解決したもので
あって、その目的は濾過材の早期目詰まりを防止し、濾
過の効果を高めることができる泥水の浄化方法を提供す
ることにある。An object of the present invention is to solve such a problem, and an object of the present invention is to provide a method for purifying muddy water which can prevent clogging of a filter medium at an early stage and enhance the effect of filtration.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、本発明の特徴とする泥水の浄化方法は泥水を沈澱池
に導き、該沈澱池の底面に敷設した非透水性シート上に
断面形状がほぼ下向きのコの字形である通水材が設置さ
れ、この通水材を透水性シートにより覆って形成された
濾過部に上記泥水を通過させることによって、その泥水
中の浮遊物を除去するものである。In order to achieve the above object, a method for purifying muddy water according to the present invention is characterized in that muddy water is guided to a sedimentation basin, and a cross section is formed on a non-permeable sheet laid on the bottom of the sedimentation pond. A water-permeable material having a substantially U-shape with a downward facing shape is installed, and the muddy water is passed through a filtration unit formed by covering the water-permeable material with a water-permeable sheet, thereby removing suspended matter in the muddy water. Is what you do.
【０００５】上記構成において、非透水性シートにはポ
リエチレンシートやゴムシート等が用いられており、こ
れによって、通水材を通過した水により池底の土が削ら
れることを防止しているので、通水材が陥没するとか、
土が舞い上がることがない。この非透水性シートは通水
材の下に敷設されるものであり、通水材の底部開口部分
に設けられていればよいが、底面より大きめに、或いは
通水材の下部側面を覆うように敷設してもよい。そし
て、通水材の下部側面を覆うように敷設した場合、通水
材と該非透水性シートの間からの土砂等の侵入を完全に
防止できる。また、透水性シートには防砂ネット、ウレ
タンシート、合成繊維シート、植物繊維シート、不織布
等が用いられ、通水材の目詰まりを防止する。In the above construction, a polyethylene sheet, a rubber sheet, or the like is used as the water-impermeable sheet, thereby preventing the soil at the bottom of the pond from being shaved by the water that has passed through the water-permeable material. , When the water flow material sinks,
The soil never rises. This impermeable sheet is laid under the water-permeable material, and may be provided at the bottom opening portion of the water-permeable material. May be laid. When laid so as to cover the lower side surface of the water-permeable material, intrusion of earth and sand or the like from between the water-permeable material and the impermeable sheet can be completely prevented. In addition, a sandproof net, a urethane sheet, a synthetic fiber sheet, a vegetable fiber sheet, a nonwoven fabric, or the like is used for the water-permeable sheet to prevent clogging of the water-permeable material.
【０００６】通水材には、ポリエチレン、ポリプロピレ
ン、ポリスチレン等の粒子径が１〜４５ｍｍ、密度が
０．００８〜０．２ｇ／ｃｍ３の独立気泡の発泡樹脂粒
子がアスファルト、石油樹脂、アクリル系樹脂、ＳＢ
Ｒ、エポキシ樹脂、ポリオレフィン系樹脂等の溶剤型接
着剤やエマルジョン等の接着剤で粒子間隙が１０〜５０
容量％になるように互いに接着されたものや、接着剤を
用いずに相互に融着されたものが用いられる。As the water-permeable material, closed-cell foamed resin particles of polyethylene, polypropylene, polystyrene and the like having a particle diameter of 1 to 45 mm and a density of 0.008 to 0.2 g / cm 3 are asphalt, petroleum resin, and acrylic resin. Resin, SB
R, epoxy resin, solvent-based adhesive such as polyolefin resin or adhesive such as emulsion and particle gap is 10-50
Those bonded to each other so as to have a volume percentage or those fused to each other without using an adhesive are used.
【０００７】通水材の肉厚は除去したい浮遊物の量等を
考慮して２０〜５００ｍｍにする。また、これら通水材
のコの字形内に径が２〜３０ｍｍの孔（周壁に穿設され
ている）を有するポリ塩化ビニル製の通水パイプを組付
けてもよい。そして、上記発泡樹脂粒子の５〜６０容量
％をパーライト、ひる石、ゼオライト、軽石等の無機軽
量骨材と置き換えてもよく、また、馬の鞍状に形成した
樹脂発泡体製のチップを上記発泡樹脂粒子に代えて用い
ることもできる。The thickness of the water-passing material is set to 20 to 500 mm in consideration of the amount of suspended matter to be removed. Further, a water passage pipe made of polyvinyl chloride having a hole having a diameter of 2 to 30 mm (perforated on the peripheral wall) in a U-shape of the water passage material may be attached. Then, 5 to 60% by volume of the foamed resin particles may be replaced with an inorganic lightweight aggregate such as pearlite, vermiculite, zeolite, pumice stone, or the like. It can be used in place of foamed resin particles.
【０００８】[0008]
【実施例】先ず、本発明方法を実施する浄化設備を説明
する。図１及び図２に示すように、沈澱池１を構設し、
この沈澱池１の底には土手２に向かって溝３を掘り、こ
の溝３に非透水性シート４を敷設する。非透水性シート
４上に断面形状が下向きのコの字形である通水材５を設
置し、この通水材５を透水性シート６により覆って溝３
に濾過部を形成し、土手２の外と連通できるようにす
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a purification facility for carrying out the method of the present invention will be described. As shown in FIGS. 1 and 2, a sedimentation basin 1 is constructed,
A groove 3 is dug at the bottom of the sedimentation basin 1 toward the bank 2, and a water-impermeable sheet 4 is laid in the groove 3. A water-permeable material 5 having a downward U-shaped cross section is installed on the water-impermeable sheet 4, and the water-permeable material 5 is covered with a water-permeable sheet 6 so that the grooves 3 are formed.
A filtration part is formed in the pier so that it can communicate with the outside of the bank 2.
【０００９】そして、通水材５内には端部寄りに集水パ
イプ７の一端部側を挿入する一方、この集水パイプ７の
他端部側は土手２を貫通させ、その貫通側はバルブ８を
介して系外（河川等）と連通させて成るものである。９
は濾過部が水に浮いてしまう時に用いる砕石や砂利等に
よる押え層であると同時に、濾過効果を向上させるもの
である。Then, one end of the water collecting pipe 7 is inserted into the water passage material 5 near the end, while the other end of the water collecting pipe 7 allows the bank 2 to penetrate therethrough. It is configured to communicate with the outside of the system (a river or the like) via the valve 8. 9
Is a pressing layer made of crushed stones or gravel used when the filtering part floats on water, and also improves the filtering effect.
【００１０】土木工事や建設工事等で発生した泥水を従
来方法と同様に沈澱池に導き、泥水に含まれる比較的粒
子径の大きな砂利や小石等を沈澱させる。次いで、この
泥水を本発明方法を実施する沈澱池１に導入すると、泥
水は透水性シート６から通水材５を通って集水パイプ７
に流入し、系外へ排出されることになるが、上記透水性
シート６と通水材５を通過するときに泥水中の浮遊物を
除去し、泥水を浄化できるものである。そして、浄化さ
れた水は河川や港湾に戻される。[0010] The muddy water generated during civil engineering work or construction work is guided to a sedimentation basin in the same manner as in the conventional method to sediment gravel, pebbles, and the like contained in the muddy water and having a relatively large particle diameter. Next, when this mud is introduced into the sedimentation basin 1 for carrying out the method of the present invention, the mud is passed through the water-permeable material 6 from the water-permeable sheet 6 to the collecting pipe 7.
However, when passing through the water-permeable sheet 6 and the water-permeable material 5, suspended matter in the muddy water can be removed and muddy water can be purified. The purified water is returned to rivers and ports.
【００１１】なお、浄化された水は集水パイプ７を用い
ないで濾過部から土手２外へ排出させることも可能であ
る。また、濾過部を通過させる工程を複数個の沈澱池を
設けて行うと、よリ浄化された水を得ることができる。
その際、第１段階では独立気泡の発泡粒子径の大きい粒
子で構成される通水材を用い、段階を追うごとに小さい
粒子で構成されるものを用いると効果的である。The purified water can be discharged from the filtration unit to the outside of the bank 2 without using the water collecting pipe 7. Further, when the step of passing through the filtration section is performed by providing a plurality of sedimentation basins, more purified water can be obtained.
At this time, it is effective to use a water-permeable material composed of particles having a large expanded particle diameter of the closed cells in the first stage, and to use a material composed of small particles as the stages progress.
【００１２】実施例１ 粒径が６ｍｍ、密度が０．０１７ｇ／ｃｍ３の発泡ポリ
スチレン粒子をアスファルトエマルジョンで接着し、乾
燥させて空隙率（通水間隙）が３７％の通水材５を縦と
横の外寸法が何れも４０ｃｍ、またその内寸法が何れも
２０ｃｍである大きさに形成し、この通水材５をポリエ
チレンシート（非透水性シート４）上に設置し、その上
に不織布（透水性シート６）を被着した後、豆砂利を厚
さ４０ｃｍ敷いた。EXAMPLE 1 Expanded polystyrene particles having a particle size of 6 mm and a density of 0.017 g / cm 3 were adhered with an asphalt emulsion and dried to form a water-permeable material 5 having a porosity (water-gap) of 37%. The outer dimensions of both sides are 40 cm and the inner dimensions are all 20 cm. The water-permeable material 5 is placed on a polyethylene sheet (non-water-permeable sheet 4), and a non-woven fabric is placed thereon. After adhering the (water-permeable sheet 6), beans gravel were spread 40 cm in thickness.
【００１３】実施例２ 周壁に穿設されている孔の径が１０ｍｍであるポリ塩化
ビニル製の通水パイプ（内径が２０ｃｍ）を上記実施例
１の通水材５の内側に組付けた他はその実施例１と同様
に実施した。Embodiment 2 A water passage pipe made of polyvinyl chloride (inner diameter: 20 cm) having a hole diameter of 10 mm formed in the peripheral wall is attached to the inside of the water passage material 5 of the first embodiment. Was carried out in the same manner as in Example 1.
【００１４】比較例１ 上記実施例１に用いられている通水材を盤状に形成し、
これを沈澱池にせき状に設置した。Comparative Example 1 The water-permeable material used in Example 1 was formed in a disk shape.
This was placed in a sedimentation basin like a cough.
【００１５】比較例２ 通水材５上に不織布（透水性シート６）を被着しない他
は上記実施例１と同様に実施した。Comparative Example 2 The same operation as in Example 1 was carried out except that the nonwoven fabric (water-permeable sheet 6) was not applied on the water-permeable material 5.
【００１６】上記実施例１，２と比較例１，２による泥
水浄化の結果は下記の表に示す通りであって、本発明方
法は泥水を良好に浄化できることが確認された。なお、
表に示されている数値の単位はｇ／１０００ｃｍ３あ
る。The results of the muddy water purification according to Examples 1 and 2 and Comparative Examples 1 and 2 are shown in the following table, and it was confirmed that the method of the present invention can satisfactorily purify muddy water. In addition,
The unit of the numerical value shown in the table is g / 1000 cm 3 .
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【発明の効果】本発明は上記の如くであって、通水材の
上に透水性シートを被着したことで通水材の早期目詰ま
りは防止され、泥水を良好に浄化できると共に、透水性
シートを取替えることで通水材自体の持続性を高める
（２０日〜９０日）ことができる。したがって、通水材
を取替えるときのように砂が舞い上がって浄化された水
を汚す心配がなく、浄化作業を合理的かつ経済的に行う
ことが可能であり、また、通水材の下に非透水性シート
を敷設したことで、池底の土の舞い上がり等が防止さ
れ、通水材を通過した水をそのまま系外へ排出できる効
果がある。As described above, the present invention has the above-mentioned features. By applying a water-permeable sheet on a water-permeable material, early clogging of the water-permeable material can be prevented, muddy water can be satisfactorily purified, and the water-permeable material can be purified. By replacing the conductive sheet, the durability of the water-permeable material itself can be increased (20 days to 90 days). Therefore, there is no need to worry about sand rising and contaminating the purified water as in the case of replacing the water-passing material, and it is possible to perform the purification operation rationally and economically. By laying the water-permeable sheet, the soil at the bottom of the pond can be prevented from rising, and the water that has passed through the water-permeable material can be discharged to the outside as it is.
【図１】本発明方法を実施した浄化設備の概略的断面図
である。FIG. 1 is a schematic cross-sectional view of a purification facility in which the method of the present invention is performed.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
１は沈澱池 ２は土手 ３は溝 ４は非透水性シート ５は通水材 ６は透水性シート 1 is a sedimentation basin 2 is a bank 3 is a groove 4 is a water impermeable sheet 5 is a water permeable material 6 is a water permeable sheet
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 21/02 B01D 21/00 B01D 24/02 C02F 11/12 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) B01D 21/02 B01D 21/00 B01D 24/02 C02F 11/12
Claims (2)
敷設した非透水性シート上に断面形状がほぼ下向きのコ
の字形である通水材が設置され、この通水材を透水性シ
ートにより覆って形成された濾過部に上記泥水を通過さ
せることによって、その泥水中の浮遊物を除去すること
を特徴とする泥水の浄化方法。1. A muddy water is guided into a sedimentation basin, and a water-permeable material having a substantially U-shaped cross section is installed on a non-permeable sheet laid on the bottom of the sedimentation basin. A method for purifying muddy water, comprising removing the suspended matter in the muddy water by passing the muddy water through a filtration section formed by covering with a permeable sheet.
るように独立気泡の発泡樹脂粒子が互いに接着して形成
された通水材が用いられていることを特徴とする請求項
１記載の泥水の浄化方法。2. A filter according to claim 1, wherein a water-permeable material formed by adhering closed-cell foamed resin particles to each other so as to have a porosity of 10 to 50% is used for the filtration unit. The method for purifying mud according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03240146A JP3134087B2 (en) | 1991-06-17 | 1991-06-17 | Mud water purification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03240146A JP3134087B2 (en) | 1991-06-17 | 1991-06-17 | Mud water purification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04371202A JPH04371202A (en) | 1992-12-24 |
| JP3134087B2 true JP3134087B2 (en) | 2001-02-13 |
Family
ID=17055182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03240146A Expired - Fee Related JP3134087B2 (en) | 1991-06-17 | 1991-06-17 | Mud water purification method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3134087B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2735379A1 (en) * | 1995-06-13 | 1996-12-20 | Morillon Corvol Courbot | Settling and decanting of dredged muds |
| KR100429768B1 (en) * | 2001-07-28 | 2004-05-10 | 최원영 | a rivers the quality of water purgation equipment by a riverbed filtering and that method |
| JP5300895B2 (en) * | 2011-03-15 | 2013-09-25 | 大石建設株式会社 | Seabed sludge removal treatment system |
-
1991
- 1991-06-17 JP JP03240146A patent/JP3134087B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04371202A (en) | 1992-12-24 |
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