JP3105216U

JP3105216U - Dredging dewatering equipment

Info

Publication number: JP3105216U
Application number: JP2004002660U
Authority: JP
Inventors: 雅明谷本
Original assignee: 有限会社アクス京都
Priority date: 2004-05-13
Filing date: 2004-05-13
Publication date: 2004-10-21
Anticipated expiration: 2010-05-13

Abstract

【課題】本考案は、浚渫土砂を常に迅速、かつ、確実に、しかも容易に少ないスペ−スでもって固液分離せしめることが出来るものであって、ひいては、分離せしめた固液の後処理を容易に効率よく行なうことが出来る、浚渫土砂の脱水処理装置を提供するものである。
【解決手段】少くとも一側に排出ゲ−ト２が開閉自在に設けられた圧縮槽１と、該圧縮槽１内に嵌合せしめて上方から所要の押圧手段１２でもって浚渫土砂Ｓを圧縮せしめつつ脱水せしめる略格子枠状の押圧体４と、該押圧体４の下面に取付けられた透水体６とよりなり、上記透水体６は支持部材７上に透水シ−ト８とスクリ−ン９とが順次積層された構成なる。
【選択図】図１PROBLEM TO BE SOLVED: To provide a solid-liquid separation method for dredged earth and sand always quickly, reliably and easily with a small space. An object of the present invention is to provide a dredged soil dewatering apparatus that can be easily and efficiently performed.
SOLUTION: A compression tank 1 provided with a discharge gate 2 at least on one side so as to be openable and closable, and fitted into the compression tank 1 to compress the dredged soil S by required pressing means 12 from above. The pressing member 4 has a substantially lattice frame shape and is dewatered while being permeable, and a permeable member 6 attached to the lower surface of the pressing member 4. Are sequentially laminated.
[Selection diagram] Fig. 1

Description

本考案は、主として河川、湖沼、港湾、ダム、下水道施設、側溝、あるいは暗渠等における浚渫土砂の脱水処理装置に関する。 The present invention relates to a dewatering apparatus for dredged soil mainly in rivers, lakes, marshes, harbors, dams, sewage facilities, gutters, culverts, and the like.

従来より、河川等の浚渫土砂を処理せしめるさいには、浚渫土砂を予め設けた沈澱池に投入して沈澱処理せしめる方法、浚渫土砂を天日乾燥により乾燥処理せしめる方法、浚渫土砂にセメントを加えて固化処理せしめる方法、あるいは、浚渫土砂を液体サイクロンに投入して砂利・砂・微粒分に分級処理せしめる方法（特開２０００−１６７４３２号公報参照）等が知られている。 Conventionally, when dredged soil such as rivers is treated, a method of throwing dredged sand into a pre-set sedimentation basin for sedimentation treatment, a method of drying the dredged sand by solar drying, adding cement to the dredged sand. And a method in which dredged soil is charged into a liquid cyclone and classified into gravel, sand, and fine particles (see JP-A-2000-167432).

そして、かかる従来の処理方法は、浚渫土砂を減容化せしめて埋立て処分したり、砂利や砂分等を再利用すべく、固液に分離せしめることを目的とするものであるから、浚渫土砂中に含まれる９０％〜１５０％の水分については固液分離後に沈澱処理などの簡単な処理をして放流せしめるものとされている。 Such a conventional treatment method is intended to reduce the volume of the dredged soil and landfill it, or to separate it into solid and liquid in order to reuse gravel and sand, etc. It is said that about 90% to 150% of water contained in the earth and sand is subjected to a simple treatment such as a precipitation treatment after solid-liquid separation and discharged.

しかしながら、浚渫土砂中に含まれる水分には環境汚染物質、例えば、河川等の富栄養化促進物質（窒素やリンなど）、農薬、重金属、排気ガス、ダイオキシン、あるいは内分泌撹乱性物質（環境ホルモン）等の汚濁物質が含まれているものであるから、固液に分離処理せしめた汚濁水を単に放流せしめたさいには環境を再汚染し、由々しき問題を惹起せしめやすいものである。 However, water contained in dredged soil includes environmental pollutants such as eutrophication promoting substances (such as nitrogen and phosphorus) in rivers, pesticides, heavy metals, exhaust gases, dioxins, or endocrine disrupting substances (environmental hormones). Therefore, when the polluted water separated into solid and liquid is simply discharged, the environment is re-polluted and a serious problem is easily caused.

かかる従来の問題点を解決するものとして、本考案者は先に、浚渫土砂を濾過して固液に分離処理せしめる工程と、分離せしめた汚濁水に所要の凝集剤を加えて汚濁物質をフロック化せしめる工程と、汚濁水に圧縮空気を吹込みつつフロック化せしめた汚濁物質を加圧浮上せしめて除去処理せしめる工程とよりなることを特徴とする、浚渫土砂の処理方法（特開２００２−１８６９９９号公報参照）を提案した。 In order to solve such a conventional problem, the present inventors have previously conducted a step of filtering dredged soil and separating it into solid and liquid, and adding a required coagulant to the separated contaminated water to flocculate the contaminated substances. A method for treating dredged soil (Japanese Patent Application Laid-Open No. 2002-186999), which comprises a step of pressurizing and floating a flocked contaminant while blowing compressed air into the contaminated water to remove the contaminated substance. Reference).

そして、上述の如く構成された従来例は、浚渫土砂を濾過して土砂と汚濁水とを確実に固液分離せしめることが出来るのみならず、分離せしめた汚濁水中に汚濁物質として含まれる環境汚染物質を凝集剤によりフロック化せしめて加圧浮上せしめることにより確実に除去せしめることが出来るものであって、ひいては、常に環境の再汚染を有効に防止せしめることが出来るものである。
特開２００２−１８６９９９号公報 In the conventional example configured as described above, not only the dredged soil can be filtered to surely separate the soil and the polluted water into solids and liquids, but also the environmental pollutants contained as pollutants in the separated polluted water. The substance can be surely removed by flocculating the substance with a coagulant and causing the substance to float under pressure, and thus can effectively prevent recontamination of the environment at all times.
JP-A-2002-186999

ところで、上記従来例は、浚渫土砂を濾過して固液に分離処理せしめるものであるから
、その分離処理に長時間を要し、極めて処理効率が悪いのみならず、分離せしめた浚渫土砂自体も脱水が不十分となりやすく、その後処理が非常に面倒であり、しかも、設置スペ−スが大となりやすいなどの問題点を有するものである。 By the way, since the above-mentioned conventional example is to filter and separate dredged soil into solid and liquid, it takes a long time for the separation process, not only the processing efficiency is extremely poor, but also the separated dredged soil itself. Dewatering tends to be insufficient, and subsequent processing is very troublesome, and further, there is a problem that the installation space tends to be large.

本考案は、かかる従来の問題点を解決し、浚渫土砂を常に迅速、かつ、確実に、しかも容易に少ないスペ−スでもって固液分離せしめることが出来るものであって、ひいては、分離せしめた固液の後処理を容易に効率よく行なうことが出来る、浚渫土砂の脱水処理装置を提供しようとするものである。 The present invention solves such a conventional problem, and enables dredged soil to be solid-liquid separated quickly, reliably, and easily with a small amount of space. An object of the present invention is to provide a dredged soil dewatering apparatus capable of easily and efficiently performing solid-liquid post-treatment.

上記の目的を達成するため、請求項１記載の考案は、少くとも一側に排出ゲ−トが開閉自在に設けられた圧縮槽と、該圧縮槽内に嵌合せしめて上方から所要の押圧手段でもって浚渫土砂を圧縮せしめつつ脱水せしめる略格子枠状の押圧体と、該押圧体の下面に取付けられた透水体とより構成されてなることを特徴とする、浚渫土砂の脱水処理装置を要旨とするものである。 In order to achieve the above object, the invention according to claim 1 is characterized in that a compression tank having at least one side on which a discharge gate is freely openable and closable, and a required pressing means which is fitted into the compression tank and is provided from above. A dredged soil dewatering apparatus characterized by comprising a substantially lattice frame-shaped pressing body for dewatering while compressing the dredged soil and a permeable body attached to the lower surface of the pressing body. It is assumed that.

請求項２記載の考案は、上記透水体は支持部材上に透水シ−トとスクリ−ンとが順次積層された構成よりなることを特徴とする、請求項１記載の浚渫土砂の脱水処理装置を要旨とするものである。 According to a second aspect of the present invention, there is provided an apparatus for dehydrating a dredged soil according to the first aspect, wherein the permeable body has a structure in which a permeable sheet and a screen are sequentially laminated on a support member. It is the gist.

請求項１記載の考案は上述のように構成されているから、圧縮槽に浚渫土砂を投入せしめ、押圧体により上方から所要の押圧手段でもって押圧して圧縮せしめつつ透水体を通して脱水せしめるという極めて簡単な操作でもって、浚渫土砂を常に迅速、かつ、確実に、しかも容易に少ないスペ−スでもって効率よく固液分離せしめることが出来るものであり
、ひいては、従来例に比して、分離せしめた固液の後処理を容易に効率よく行なうことが出来るものである。 Since the invention according to claim 1 is configured as described above, dredging earth and sand is charged into the compression tank, and depressed by a pressing body from above with required pressing means to be compressed and dewatered through the permeable body. With a simple operation, the dredged soil can be always and quickly, reliably and easily separated into solid and liquid efficiently with a small amount of space. The solid-liquid post-treatment can be easily and efficiently performed.

請求項２記載の考案は上述のように構成されているから、浚渫土砂中に含まれる水分を濾過状に確実に脱水処理せしめることが出来るものであって、ひいては、特に分離水の後処理を容易に、しかも効率よく行なうことが出来る。 Since the invention of claim 2 is configured as described above, the water contained in the dredged soil can be surely subjected to dehydration treatment in the form of filtration. It can be performed easily and efficiently.

以下に、本考案を実施するための最良の形態を図面に示す一実施例に基づいて説明する
。 Hereinafter, the best mode for carrying out the present invention will be described based on an embodiment shown in the drawings.

図１乃至図３は本考案の一実施例を示すもので、同図中、１は所要の容積を有する可搬自在な方形体状の圧縮槽、２は該圧縮槽１の一側にレバ−３を介して開閉作動自在に取付けられた排出ゲ−トである。４は圧縮槽１内に嵌合自在とされた略格子枠状の押圧体、５は該押圧体４の上面に取付けられた押圧手段用当て板、６は押圧体４の下面に取付けられた透水体で、該透水体６は略格子枠状の支持部材７と、該支持部材７上に配設された透水シ−ト８と、該透水シ−ト８上に配設された網目状のスクリ−ン９とより構成されている
。その他、１０は押圧体４に取付けられた吊ロ−プ、１１は圧縮槽１内に連通状に接続自在とされた排水パイプ、１２は当て板５を介して押圧体４を押圧せしめるパワ−ショベルである。Ｓは浚渫土砂、Ｗは分離水を各々示す。 1 to 3 show one embodiment of the present invention, in which 1 is a portable rectangular compression tank having a required volume, and 2 is a lever provided on one side of the compression tank 1. A discharge gate mounted so as to be able to open and close freely via a line -3. Reference numeral 4 denotes a substantially lattice frame-shaped pressing member which can be freely fitted in the compression tank 1, 5 denotes a pressing plate for pressing means mounted on the upper surface of the pressing member 4, and 6 denotes a lower surface of the pressing member 4. The permeable body 6 includes a support member 7 having a substantially lattice frame shape, a permeable sheet 8 provided on the support member 7, and a mesh formed on the permeable sheet 8. And a screen 9 of FIG. In addition, reference numeral 10 denotes a hanging rope attached to the pressing body 4, reference numeral 11 denotes a drainage pipe which can be freely connected to the compression tank 1 in a communicating manner, and reference numeral 12 denotes a power for pressing the pressing body 4 through the backing plate 5. Excavator. S indicates dredged soil and W indicates separated water.

次に、上述の如く構成された実施例の作動について説明する。
先ず、排出ゲ−ト２を閉作動せしめた圧縮槽１内に未処理の含水浚渫土砂Ｓを投入せしめる。次いで、押圧体４をパワ−ショベル１２により吊ロ−プ１０を介して吊上げつつ、上方より圧縮槽１内に嵌合せしめる。しかるのち、パワ−ショベル１２の先部を当て板５に当てがいつつ押圧体４と共に透水体６を下方に押圧して浚渫土砂Ｓを圧縮せしめる。すると、押圧体４及び透水体６の圧縮により浚渫土砂Ｓは脱水すると共に、脱水した水は透水体６の透水シ−ト８・スクリ−ン９を通して次第に上昇し、押圧体４上に貯留する。このさい、浚渫土砂Ｓより脱水分離した分離水Ｗは透水体６の透水シ−ト８を透過せしめるものであるから、分離水Ｗを濾過状に浄化せしめることが出来る。 Next, the operation of the embodiment configured as described above will be described.
First, the untreated wet dredged soil S is charged into the compression tank 1 in which the discharge gate 2 is closed. Next, the pressing body 4 is fitted into the compression tank 1 from above while being lifted by the power shovel 12 via the hanging rope 10. After that, the tip of the power shovel 12 is pressed against the backing plate 5 while pressing the permeable body 6 together with the pressing body 4 to compress the dredged soil S. Then, the dredged soil S is dewatered by the compression of the pressing body 4 and the permeable body 6, and the dewatered water gradually rises through the permeable sheet 8 and the screen 9 of the permeable body 6 and is stored on the pressing body 4. . At this time, the separated water W which has been dewatered and separated from the dredged soil S is permeated through the permeable sheet 8 of the permeable body 6, so that the separated water W can be purified into a filtered form.

そして、所定の圧力に達した時点でパワ−ショベル１２による押圧を停止すると共に、押圧体４上に貯留する分離水Ｓを排水パイプ１１により外方に排出せしめる。分離水Ｗの排出が完了すると、パワ−ショベル１２により押圧体４を圧縮槽１内より取出すと共に、レバ−３を介して排出ゲ−ト２を開作動せしめ、脱水処理せしめた浚渫土砂Ｓを外方に排出せしめる。排出せしめた浚渫土砂Ｓは、公知の方法により後処理せしめ、また、分離水Ｗは、従来例と同様に凝集剤を加えて汚濁物質をフロック化せしめたのち、圧縮空気を吹込みつつ汚濁物質を加圧浮上せしめて除去処理せしめるとよい。このさい、浚渫土砂Ｓを圧縮して脱水処理せしめるものであるから、濾過処理せしめる従来例に比して、脱水処理せしめた浚渫土砂Ｓ及び分離水Ｗの後処理を容易に、しかも効率よく行なうことが出来るのみならず、従来の濾過処理に比して、少ないスペ−スでもって迅速、かつ、確実に効率よく脱水処理せしめることが出来るものである。 When the predetermined pressure is reached, the pressing by the power shovel 12 is stopped, and the separated water S stored on the pressing body 4 is discharged outward by the drain pipe 11. When the separation water W is completely discharged, the pressing body 4 is taken out from the compression tank 1 by the power shovel 12, and the discharge gate 2 is opened via the lever 3 to remove the dewatered dredged soil S. Let it drain out. The discharged dredged soil S is post-treated by a known method, and the separated water W is added with a coagulant to flocculate the contaminants in the same manner as in the conventional example. May be floated under pressure to be removed. At this time, since the dredged soil S is compressed and dewatered, the post-treatment of the dewatered dredged soil S and the separated water W is performed easily and efficiently as compared with the conventional example of filtering. In addition to being able to perform the dewatering process, the dewatering process can be performed quickly, reliably and efficiently with less space compared to the conventional filtration process.

なお、上記実施例において、排出ゲ−ト２は圧縮槽１の一側にのみ設けられているが、必要に応じて複数個設けてもよい。また、押圧手段としてパワ−ショベル１２が示されているが、これに限定されるものでなく、油圧シリンダなど他の公知のものを採択使用することが出来る。さらに、スクリ−ン９は網目状とされているが、これに限定されるものでなく、格子状、有孔板状など公知のスクリ−ンを採択使用することが出来るものである。 In the above embodiment, the discharge gate 2 is provided only on one side of the compression tank 1, but a plurality of discharge gates may be provided if necessary. Although the power shovel 12 is shown as the pressing means, the power shovel 12 is not limited to the power shovel, and other known means such as a hydraulic cylinder can be adopted. Further, although the screen 9 is formed in a mesh shape, it is not limited to this, and a known screen such as a lattice shape or a perforated plate shape can be adopted and used.

本考案の一実施例を示す斜視図である。FIG. 2 is a perspective view showing an embodiment of the present invention. 実施例の透水体６を示す分解斜視図である。FIG. 3 is an exploded perspective view showing a permeable body 6 of the embodiment. 実施例の使用状態を示す垂直断面図である。FIG. 4 is a vertical sectional view showing a use state of the embodiment.

符号の説明Explanation of reference numerals

１圧縮槽
２排出ゲ−ト
４押圧体
６透水体
７支持部材
８透水シ−ト
９スクリ−ン
１２パワ−ショベル
Ｓ浚渫土砂
Ｗ分離水 DESCRIPTION OF SYMBOLS 1 Compression tank 2 Discharge gate 4 Pressing body 6 Permeable body 7 Support member 8 Permeable sheet 9 Screen 12 Power shovel S Dredged soil W Separated water

Claims

少くとも一側に排出ゲ−トが開閉自在に設けられた圧縮槽と、該圧縮槽内に嵌合せしめて上方から所要の押圧手段でもって浚渫土砂を圧縮せしめつつ脱水せしめる略格子枠状の押圧体と、該押圧体の下面に取付けられた透水体とより構成されてなることを特徴とする
、浚渫土砂の脱水処理装置。 A compression tank provided with a discharge gate at least on one side so as to be openable and closable, and a substantially lattice-frame-shaped press fitted in the compression tank to compress and dewater the dredged soil from above with required pressing means. An apparatus for dehydrating dredged soil, comprising a body and a permeable body attached to the lower surface of the pressing body.

上記透水体は、支持部材上に透水シ−トとスクリ−ンとが順次積層された構成よりなることを特徴とする、請求項１記載の浚渫土砂の脱水処理装置。 2. The apparatus according to claim 1, wherein the permeable body has a structure in which a permeable sheet and a screen are sequentially laminated on a support member.