JP2816769B2 - Mud treatment equipment - Google Patents
Mud treatment equipmentInfo
- Publication number
- JP2816769B2 JP2816769B2 JP2418152A JP41815290A JP2816769B2 JP 2816769 B2 JP2816769 B2 JP 2816769B2 JP 2418152 A JP2418152 A JP 2418152A JP 41815290 A JP41815290 A JP 41815290A JP 2816769 B2 JP2816769 B2 JP 2816769B2
- Authority
- JP
- Japan
- Prior art keywords
- muddy water
- tank
- vibrating sieve
- specific gravity
- 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
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Treatment Of Sludge (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、泥水加圧式シールド
工事等において使用される泥水処理装置に係り、特に、
排出される余剰泥水の処理設備を簡易化させることかで
きるシステム構成に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a muddy water treatment apparatus used in a muddy water pressure shield construction and the like.
The present invention relates to a system configuration capable of simplifying a facility for treating excess mud discharged.
【０００２】[0002]
【従来の技術】泥水工法（泥水シールド、連続壁等）の
工事において、泥水は、切り羽の安定や掘削土砂の流体
輸送を主な目的として使用される。2. Description of the Related Art In the construction of a muddy water method (muddy water shield, continuous wall, etc.), muddy water is mainly used for stabilizing cutting faces and for transporting excavated soil and fluid.
【０００３】図２は従来の泥水処理装置を示すものであ
り、１は掘削機、２は循環系、３は泥水を流動させるた
めのポンプ、４は振動篩機、５は調整槽、６は泥水の比
重を調整する比重調整装置であり、循環系２の所定位置
には余剰泥水槽７、溶解槽８、泥水比重が軽くなったと
きや泥水の不足時の補充を行なう貯泥槽９及び泥水比重
の高い場合にこれを補充する清水槽１０がそれぞれ設け
られている。FIG. 2 shows a conventional muddy water treatment apparatus, wherein 1 is an excavator, 2 is a circulation system, 3 is a pump for flowing muddy water, 4 is a vibrating sieve, 5 is a regulating tank, and 6 is a regulating tank. A specific gravity adjusting device for adjusting the specific gravity of the muddy water, a surplus muddy water tank 7, a dissolving tank 8, a mud storage tank 9 for replenishing when the muddy water specific gravity becomes light or when the muddy water is insufficient, and a specific gravity adjusting device for adjusting the specific gravity of the muddy water. A fresh water tank 10 is provided for replenishing the muddy water when its specific gravity is high.
【０００４】かかる装置にあっては、地下水圧より高く
加圧した泥水を掘削機１全部の掘削室に送り、カッター
ヘッドで地山を切削しながら掘進する際、掘削した土砂
が掘削室で泥水に混入するので、それらの土砂を循環系
２により流体移動させ、振動篩機４で泥水と土粒成分に
分離して泥水のみ循環系２へ還流させる。図中１１は振
動篩機４のスクリーンによって脱水分離した砂レキ、１
２は分離した泥水である。[0004] In such an apparatus, muddy water pressurized above groundwater pressure is sent to the entire excavation room of the excavator 1, and when excavating while cutting the ground with a cutter head, the excavated sediment becomes muddy in the excavation room. Therefore, the soil and sand are fluidized by the circulation system 2, separated into muddy water and soil particles by the vibrating sieve 4, and only the muddy water is returned to the circulating system 2. In the figure, reference numeral 11 denotes a sand dewatered and separated by the screen of the vibrating sieving machine 4;
2 is the separated muddy water.
【０００５】但し、振動篩機４による分離だけでは泥水
１２の微粒成分濃度（泥水比重）が高くなったり或は低
くなるため、そのままの状態では還流させられない場合
があり、一度サイクロンで細砂を取り除いた泥水を調整
槽５に蓄えて比重を測定し、溶解槽８、清水槽１０等か
ら活性剤や清水を添加して比重調整し、循環系２へ還流
させている。このとき比重調整装置６は、泥水の比重に
応じて活性剤や清水の添加量を判別し、各ポンプを駆動
して泥水の比重を調整する。However, the concentration of the fine particles (the specific gravity of the muddy water) of the muddy water 12 is increased or lowered only by the separation by the vibrating sieve 4, so that the muddy water may not be refluxed as it is. The mud from which water has been removed is stored in the adjusting tank 5 and the specific gravity is measured. The specific gravity is adjusted by adding an activator or fresh water from the dissolving tank 8, the fresh water tank 10, or the like, and the mixture is refluxed to the circulation system 2. At this time, the specific gravity adjusting device 6 determines the amount of activator or fresh water to be added according to the specific gravity of the mud, and drives each pump to adjust the specific gravity of the mud.
【０００６】尚、ここで泥水とは、清水中に粘土（０．
００５ｍｍ以下の土粒）及びシルド（０．００５〜０．
００７４ｍｍ）を含むものをいい、それ以上の粒径、即
ち細砂（０．００７４〜０．４２ｍｍ）、粗砂（０．４
２〜２．０ｍｍ）、れき（２．０ｍｍ以上）等は、分類
上、土粒あるいは土粒子または砂れきと表記する。[0006] Here, muddy water means clay (0.
005 mm or less) and sild (0.005-0.
0074 mm), and having a larger particle size, that is, fine sand (0.0074 to 0.42 mm) and coarse sand (0.4 mm).
2 to 2.0 mm), gravel (2.0 mm or more) and the like are referred to as soil particles or soil particles or gravel for classification.
【０００７】[0007]
【発明が解決しようとする課題】ところで、かかる従来
の泥水処理装置にあっては、粘土やベントナイト等の比
重材やＣＭＣ等の増粘剤の他、清水等の希釈液、特に、
大量の清水を利用して泥水比重を調整していたため、比
重調整後に余剰泥水が大量に発生し、従って、循環系に
還流し得ない余剰泥水を放流するための設備施設、例え
ば、希釈液槽やパイプライン、ポンプ設備等の処理設備
が必要となり、大規模なトンネル工事等では余剰泥水処
理設備が過度に大型化し、また、処理速度が大幅に低下
する、という問題を有していた。However, in such a conventional muddy water treatment apparatus, in addition to a specific gravity material such as clay and bentonite, a thickener such as CMC, and a diluent such as fresh water,
Since the specific gravity of the muddy water was adjusted using a large amount of clear water, a large amount of excess muddy water was generated after the specific gravity adjustment, and therefore, a facility for discharging excess muddy water that cannot be returned to the circulation system, for example, a diluting liquid tank In such a case, a large-scale tunnel construction requires an excessively large amount of muddy water treatment equipment and a large reduction in processing speed.
【０００８】この発明は、かかる現状に鑑み創案された
ものであって、その目的とするところは、上記泥水比重
調整時における余剰泥水の発生量を最低限に抑え、最低
限の安定液（再循環泥水）を得て、排水処理設備を簡易
化させることができる泥水処理装置を提供しようとする
ものである。The present invention has been made in view of the above situation, and has as its object to minimize the amount of excess mud generated during the above-mentioned mud water specific gravity adjustment, and to minimize the amount of stable mud It is an object of the present invention to provide a muddy water treatment apparatus capable of obtaining a circulating muddy water and simplifying a wastewater treatment facility.
【０００９】[0009]
【課題を解決するための手段】前記課題を達成するた
め、この発明に係る泥水処理装置は、泥水を循環させる
循環系を備え、該循環系に泥水と土粒成分とを選別する
振動篩機と、該振動篩機を通過した泥水を蓄える調整槽
と、を介設してなる泥水処理装置において，上記調整槽
には、泥水中の微粒子成分を所定径以上の土粒子に凝集
させる凝集剤を泥水に対して添加する造粒装置と連通す
るラインを接続し、かつ、この造粒装置で処理された泥
水は、上記造粒装置と振動篩機とを連通接続するライン
を介して振動篩機へと還流されることを特徴とするもの
である。In order to achieve the above object, a muddy water treatment apparatus according to the present invention includes a circulation system for circulating muddy water, and a vibrating sieve for separating muddy water and soil particles in the circulation system. And a regulating tank for storing the muddy water that has passed through the vibrating sieve, wherein the adjusting tank has a coagulant for coagulating fine particle components in the muddy water into soil particles having a predetermined diameter or more. Is connected to a granulating device for adding the slurry to the muddy water, and the muddy water treated by the granulating device is connected to the vibrating sieve through a line connecting the granulating device and the vibrating sieve. It is characterized by being returned to the machine.
【００１０】[0010]
【作用】それ故、この発明によれば、造粒装置から添加
される凝集剤により比重の高い泥水中の微粒成分は、細
砂成分以上の粒径をもつ土粒に凝集し、泥水浄化装置に
よって上澄水と土粒子に選別され、上澄水は再循環泥水
に還流される。Therefore, according to the present invention, the fine particle component in the mud having a high specific gravity is aggregated into soil particles having a particle size equal to or greater than the fine sand component by the coagulant added from the granulating device, and the mud purification device Is separated into supernatant water and soil particles, and the supernatant water is returned to the recirculated mud.
【００１１】[0011]
【実施例】以下、添付図面に示す実施例に基づきこの発
明を詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments shown in the accompanying drawings.
【００１２】図１に示すように、この実施例に係る泥水
処理装置は、調整槽５で濃度調整された調整泥水をポン
ブ３Ａで加圧して掘削機（シールド機）１へと圧送する
ライン２Ａと、掘削機１で掘削された土砂をポンプ３Ｂ
で加圧して上記泥水と共に泥水の一時処理を行う振勅篩
機４へと圧送するライン２Ｂと、振動篩機４で処理され
た泥水１２を上記調整槽５へと還流させるライン２Ｃ
と、この調整槽５へと還流された泥水を比重調整装置６
へと送出したのち余剰泥水槽７へと送出するライン２Ｄ
と、上記調整槽５及び余剰泥水槽７から送出された泥水
をポンプ３Ｃで加圧して造粒装置２０へと圧送するライ
ン２Ｅと、上記ポンプ３Ｃと造粒装置２０との間のライ
ン２Ｅに連通接続されＰＡＣ槽１５と高分子溶解槽１６
から凝集剤を該ライン２Ｅへと送出するライン２Ｆ及び
２Ｇと、この造粒装置２０で処理された泥水を上記振動
篩機４へと還流させるライン２Ｈと、上記造粒装置２０
で処理された泥水を化学処理装置３０で処理したのち上
記振動篩機４または調整槽５へと還流させるライン２Ｉ
と、新泥水ブラント３１で生成した新しい濃泥水や粘土
等を調整槽５へと圧送するライン２Ｊ及び２Ｋと、清水
タンク３２から水道水を調整槽５へと圧送するライン２
Ｌと、から構成されてなる循環系２で接続されて構成さ
れている。As shown in FIG. 1, the muddy water treatment apparatus according to this embodiment has a line 2A for pressurizing the adjusted muddy water whose concentration has been adjusted in the adjusting tank 5 with a pump 3A and feeding it to an excavator (shielding machine) 1. And the earth and sand excavated by the excavator 1
A line 2B for pressurizing and supplying the muddy water 12 processed by the vibrating sieving machine 4 to the regulating tank 5 by a line 2B for pressure-feeding the muddy water to the regulating tank 5 for performing a temporary treatment of the muddy water together with the muddy water.
And the mud returned to the adjusting tank 5 is supplied to the specific gravity adjusting device 6.
2D to send to the excess mud tank 7 after sending to
And a line 2E for pressurizing the muddy water sent from the adjusting tank 5 and the surplus muddy water tank 7 with the pump 3C and pumping the muddy water to the granulating apparatus 20, and a line 2E between the pump 3C and the granulating apparatus 20. The PAC tank 15 and the polymer dissolving tank 16 are connected and communicated.
2F and 2G for sending coagulant to the line 2E, a line 2H for returning the muddy water treated by the granulating device 20 to the vibrating sieve 4,
2I in which the muddy water treated in the above is treated by the chemical treatment device 30 and then returned to the vibrating sieve 4 or the regulating tank 5
And lines 2J and 2K for pumping new thick muddy water, clay and the like generated by the new muddy water blunt 31 to the adjusting tank 5, and a line 2 for pumping tap water from the fresh water tank 32 to the adjusting tank 5.
L and a circulatory system 2 composed of L.
【００１３】上記造粒装置２０は、泥水の二次処理を行
うため、ＰＡＣ槽１５と高分子溶解槽１６から凝集剤、
例えば、ポリ塩化アルミニウム（ＰＡＣ）、アクリルア
ミド系高分子等の凝集剤を泥水中に添加し、泥水中の粘
土粒子、シルト粒子を粒径０．５〜３．０ｍｍ程度の土
粒成分に造粒するものである。The granulating apparatus 20 performs a secondary treatment of muddy water by using a flocculant, a PAC tank 15 and a polymer dissolving tank 16.
For example, a coagulant such as polyaluminum chloride (PAC) or acrylamide polymer is added to muddy water, and the clay particles and silt particles in the muddy water are granulated into a soil component having a particle size of about 0.5 to 3.0 mm. Is what you do.
【００１４】このようにして凝集剤が作用して造粒され
た泥水は、ライン２Ｈを通って振動篩機４へ送られて篩
をかけられることで、その濃度が調整される。The muddy water granulated by the action of the coagulant is sent to the vibrating sieve 4 through the line 2H and sieved, whereby the concentration thereof is adjusted.
【００１５】勿論、造粒装置２０で処理された上部の清
水は、上記化学処理装置３０でｐＨ中和処理が施された
後、放流される。Of course, the upper fresh water treated by the granulator 20 is discharged after being subjected to a pH neutralization treatment by the chemical treatment device 30.
【００１６】また、泥水中の濃度が低い場合には、前記
新泥水プラント３１で生成された新しい濃泥水や粘土等
が上記調整槽５へと供給されて濃度調整が行なわれ、一
方、泥水中の濃度が高い場合には、清水タンク３２から
水道水が調整槽５へと圧送され希釈処理される。When the concentration in the muddy water is low, new concentrated muddy water or clay generated in the new muddy water plant 31 is supplied to the adjusting tank 5 to adjust the concentration. When the concentration is high, tap water is fed from the fresh water tank 32 to the adjustment tank 5 and diluted.
【００１７】従って、この実施例に係る泥水処理装置に
よれば、まず泥水の一次処理として振動篩機４による泥
水分離を行う。即ち、掘削機１より坑外へ流体輪送され
る排泥水を振動篩機４によって分離脱水しレキ及び砂を
除去する。ここで分離された泥水１２はライン２Ｃを通
って調整槽５へ送られる。Therefore, according to the muddy water treatment apparatus according to this embodiment, first, muddy water is separated by the vibrating sieve 4 as primary treatment of the muddy water. That is, the sludge discharged from the excavator 1 to the outside of the pit is separated and dewatered by the vibrating sieve 4 to remove slime and sand. The muddy water 12 separated here is sent to the adjustment tank 5 through the line 2C.
【００１８】この調整槽５で貯溜された泥水は、比重調
整装置６による比重検知を受けた後、濃度調整が必要な
泥水は造粒装置２０へと圧送される。After the muddy water stored in the adjusting tank 5 is detected by the specific gravity adjusting device 6, the muddy water whose concentration needs to be adjusted is sent to the granulating device 20 under pressure.
【００１９】この造粒装置２０では、ＰＡＣ槽１５と高
分子溶解槽１６から供給された適宜の凝集剤によって造
粒された後、振動篩機４で篩をかけられて余剰泥粒が除
去され再使用に供される。In this granulator 20, after granulating with a suitable coagulant supplied from the PAC tank 15 and the polymer dissolving tank 16, it is sieved by the vibrating sieve 4 to remove excess mud particles. Provided for reuse.
【００２０】尚、この発明に係る泥水処理装置にあって
は、凝集剤として、上記実施例で挙げたアクリルアミド
系高分子等の有機凝集剤に限定されず、他の有機凝集剤
のみを用いることもでき、さらには、有機凝集剤と無機
凝集剤とを併用することもできる。In the muddy water treatment apparatus according to the present invention, the coagulant is not limited to the organic coagulant such as the acrylamide-based polymer described in the above embodiment, and only the other organic coagulant is used. Alternatively, an organic flocculant and an inorganic flocculant can be used in combination.
【００２１】また、この発明にあっては、泥水シールド
工法により排出される泥水を清水と凝集物とに分離し、
或は、連続壁等の工法により排出される泥水を泥水と凝
集物とに分離することも可能である。Further, according to the present invention, the muddy water discharged by the muddy water shield method is separated into fresh water and aggregates,
Alternatively, it is also possible to separate muddy water discharged by a method such as a continuous wall into muddy water and aggregates.
【００２１】[0021]
【発明の効果】この発明に係る泥水処理装置は、以上説
明したように、従来使用されている振動篩機によって造
粒された余剰泥水を除去することで、最適濃度の泥水を
得ることができるため、従来の泥水処理設備で用いられ
ていた凝集反応槽やフィルタープレス等の設備が不要と
なり、泥水の処理設備を大幅に簡略化することができる
と共に、泥水処理速度を大幅に向上させることができる
等の優れた効果を奏する。As described above, the muddy water treatment apparatus according to the present invention can obtain the muddy water having the optimum concentration by removing excess muddy water granulated by the conventionally used vibrating sieve. Therefore, facilities such as a coagulation reaction tank and a filter press used in conventional muddy water treatment equipment become unnecessary, and the muddy water treatment equipment can be greatly simplified, and the muddy water treatment speed can be greatly improved. It has excellent effects such as being able to.
【図１】この発明の一実施例に係る泥水処理装置の構成
を概略的に示す説明図である。FIG. 1 is an explanatory view schematically showing a configuration of a muddy water treatment apparatus according to one embodiment of the present invention.
【図２】従来の泥水処理装置を示す説明図である。FIG. 2 is an explanatory view showing a conventional muddy water treatment apparatus.
１ 掘削機 ２ 循環系 ２Ｅ ライン ２Ｈ 還流ライン ４ 振動篩機 ５ 調整槽 DESCRIPTION OF SYMBOLS 1 Excavator 2 Circulation system 2E line 2H Reflux line 4 Vibrating sieve 5 Adjustment tank
Claims (1)
系に泥水と土粒成分とを選別する振動篩機と、該振動篩
機を通過した泥水を蓄える調整槽と、を介設してなる泥
水処理装置において、上記調整槽には、泥水中の微粒子
成分を所定径以上の土粒子に凝集させる凝集剤を泥水に
対して添加する造粒装置と連通するラインを接続し、か
つ、この造粒装置で処理された泥水は、上記造粒装置と
振動篩機とを連通接続するラインを介して振動篩機へと
還流されることを特徴とする泥水処理装置。1. A circulating system for circulating muddy water, a vibrating sieve for selecting muddy water and a soil particle component in the circulating system, and an adjusting tank for storing muddy water that has passed through the vibrating sieve. In the muddy water treatment apparatus, the adjustment tank is connected to a line that communicates with a granulating apparatus that adds a coagulant to the muddy water to coagulate a fine particle component in the muddy water into a soil particle having a predetermined diameter or more, and The muddy water treatment device, wherein the muddy water treated by the granulation device is returned to the vibrating sieve through a line connecting the granulating device and the vibrating sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2418152A JP2816769B2 (en) | 1990-12-20 | 1990-12-20 | Mud treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2418152A JP2816769B2 (en) | 1990-12-20 | 1990-12-20 | Mud treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04221194A JPH04221194A (en) | 1992-08-11 |
| JP2816769B2 true JP2816769B2 (en) | 1998-10-27 |
Family
ID=18526081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2418152A Expired - Fee Related JP2816769B2 (en) | 1990-12-20 | 1990-12-20 | Mud treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2816769B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09125873A (en) * | 1995-10-31 | 1997-05-13 | Masahiro Inoue | Device for mud-water treatment |
| JPH09323097A (en) * | 1996-06-07 | 1997-12-16 | Mitsubishi Heavy Ind Ltd | Sludge treating equipment |
| JP2008149303A (en) * | 2006-12-13 | 2008-07-03 | Sanwa Kizai Co Ltd | Floc treatment method by mud and muddy water treatment apparatus |
| JP2008155188A (en) * | 2006-12-20 | 2008-07-10 | Sanwa Kizai Co Ltd | Mud and muddy water treatment method |
| JP5001100B2 (en) * | 2007-09-10 | 2012-08-15 | 鹿島建設株式会社 | Construction sludge treatment soil preparation system and construction sludge treatment soil preparation method |
| CN113104942A (en) * | 2021-03-02 | 2021-07-13 | 北京新铁瑞达科技发展有限公司 | Water circulating system for muck treatment |
-
1990
- 1990-12-20 JP JP2418152A patent/JP2816769B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04221194A (en) | 1992-08-11 |
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