JPH10128010A - Treatment of dredge mud - Google Patents
Treatment of dredge mudInfo
- Publication number
- JPH10128010A JPH10128010A JP8307525A JP30752596A JPH10128010A JP H10128010 A JPH10128010 A JP H10128010A JP 8307525 A JP8307525 A JP 8307525A JP 30752596 A JP30752596 A JP 30752596A JP H10128010 A JPH10128010 A JP H10128010A
- Authority
- JP
- Japan
- Prior art keywords
- mud
- polymer flocculant
- meth
- acrylic polymer
- dredging
- 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
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は湖沼の底泥を浚渫し
外部に搬出するにあたり脱水機等により水分を除去する
に効率的な処方を提供するものであり、さらに詳しくは
浚渫泥にアニオン性（メタ）アクリル系高分子凝集剤を
添加混合した後にカチオン性（メタ）アクリル系高分子
凝集剤を添加混合して浚渫泥を凝集せしめ、凝集浚渫泥
中の水分を脱水機等により効率良く除去し、外部に搬出
するに容易な流動性の無いケーキ状の固形土を得る事を
目的とする浚渫泥の処理方法である。BACKGROUND OF THE INVENTION The present invention provides an efficient prescription for removing water by a dehydrator when dredging bottom mud of a lake or marsh and carrying it out to the outside. After adding and mixing the (meth) acrylic polymer flocculant, the cationic (meth) acrylic polymer flocculant is added and mixed to coagulate the dredged mud, and the water in the coagulated dredged mud is efficiently removed by a dehydrator or the like. This is a method for treating dredging mud for the purpose of obtaining cake-like solid soil without fluidity that is easy to carry out to the outside.
【０００２】[0002]
【従来の技術】従来、浚渫は海底の泥土を他の海面へ移
動させ該海面を埋め立てたり、単なる他場所への放棄を
行い、その主たる関心は埋め立てまたは放棄海面の汚濁
防止であり、浚渫パイプのサクションに高分子凝集剤を
添加する事を常道とする。 ここに添加する高分子凝集
剤は通常は液体が用いられるが粉末高分子凝集剤の分散
液を使用する方法（特開昭４９−３７４４２号公報）も
知られている。 また浚渫泥とその物性を異にするもの
の各種スラッジの脱水にデュアルシステムと総称される
２種の高分子凝集剤を逐次添加する事により凝集脱水処
理を行う方法も公知であり、アニオン性（メタ）アクリ
ル系高分子凝集剤を添加混合した後にカチオン性高分子
凝集剤を添加する方法も各種知られている。 しかしこ
の場合、通常アニオン性（メタ）アクリル系高分子凝集
剤を添加混合した後に低分子量の縮合系カチオン性高分
子凝集剤やポリエチレンイミン等が用いられ、高分子量
のカチオン性（メタ）アクリル系高分子凝集剤を添加混
合する事は稀である。 特開平０８−２５７３１７号公
報には無薬注でフィルタープレスにより脱水する技術が
開示されているが作業効率が甚だしく劣り、大量の浚渫
泥を効率良く脱水するには不適である。 該公報に記載
の従来技術は、天日乾燥、石灰系の固化剤との混合によ
る吸水脱水、海面埋め立ての３種であり、その欠点は該
公報に記載されている。 湖沼の浚渫泥はヘドロ成分等
を含み、その凝集処理を効率よく行う事は従来技術では
困難であった。2. Description of the Related Art Conventionally, dredging involves moving mud on the seabed to another sea surface to reclaim the sea surface or simply abandon it to another place, and its main interest is to prevent landfill or pollution of the abandoned sea surface. It is customary to add a polymer flocculant to the suction of (1). A liquid is generally used as the polymer flocculant to be added here, but a method using a dispersion of a powdery polymer flocculant is also known (JP-A-49-37442). Also known is a method of performing coagulation and dehydration treatment by sequentially adding two types of polymer coagulants generally referred to as a dual system to the dehydration of various sludges having different physical properties from dredging mud, and an anionic (meta) Various methods of adding a cationic polymer flocculant after adding and mixing an acrylic polymer flocculant are also known. However, in this case, a low molecular weight condensed cationic polymer flocculant or polyethyleneimine is usually used after adding and mixing an anionic (meth) acrylic polymer flocculant, and a high molecular weight cationic (meth) acrylic flocculant is used. It is rare to add and mix a polymer flocculant. Japanese Patent Application Laid-Open No. 08-257317 discloses a technique of dewatering by a filter press without chemical injection, but the work efficiency is extremely poor, and it is not suitable for efficiently dewatering a large amount of dredging sludge. The prior art described in this publication is of three types: sun drying, water absorption and dehydration by mixing with a lime-based solidifying agent, and sea reclamation, and the drawbacks are described in this publication. The dredged mud of a lake contains sludge components and the like, and it has been difficult with the prior art to efficiently perform the coagulation treatment.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は周辺を
汚染する事無く、狭い敷地で浚渫泥を効率良く脱水する
事により、その体積を減少させると共に流動性を除去
し、外部搬出を容易にする方法を提供する事をその課題
とする。SUMMARY OF THE INVENTION An object of the present invention is to efficiently dewater dredged mud on a narrow site without contaminating the surrounding area, thereby reducing its volume and removing fluidity and making it easy to carry out outside. The task is to provide a method for
【０００４】[0004]
【課題を解決する為の手段】本発明者は湖沼の浚渫泥を
凝集処理する方法を各種検討し、下記方法により目的を
達成できる事を発見し、本発明を成すに至った。The present inventors have studied various methods for coagulating dredged mud in lakes and marshes and found that the object can be achieved by the following method, and have accomplished the present invention.
【０００５】本発明の請求項１の発明は、浚渫泥にアニ
オン性（メタ）アクリル系高分子凝集剤を添加混合した
後、カチオン性（メタ）アクリル系高分子凝集剤を添加
混合して浚渫泥を凝集させ、次いで水を分離する事によ
り浚渫泥の流動性を除去する事を特徴とする浚渫泥の処
理方法である。According to a first aspect of the present invention, an anionic (meth) acrylic polymer flocculant is added and mixed to dredging mud, and then a cationic (meth) acrylic polymer flocculant is added and mixed. It is a method for treating dredged mud characterized by removing the fluidity of dredged mud by coagulating the mud and then separating water.
【０００６】本発明の請求項２の発明は、浚渫泥の塩濃
度が水中１重量％以下である事を特徴とする請求項１に
記載の浚渫泥の処理方法である。[0006] The invention of claim 2 of the present invention is the method for treating dredged mud according to claim 1, wherein the salt concentration of the dredged mud is 1% by weight or less in water.
【０００７】本発明の請求項３の発明は、凝集浚渫泥を
脱水機にかけて水を分離する事により浚渫泥の流動性を
除去する事を特徴とする請求項１ないし請求項２に記載
の浚渫泥の処理方法である。According to a third aspect of the present invention, there is provided a dredge according to any one of claims 1 to 2, wherein the fluidity of the dredged mud is removed by subjecting the flocculated dredged mud to a dehydrator to separate water. It is a method of treating mud.
【０００８】本発明の請求項４の発明は、凝集浚渫泥の
水を分離する脱水機がスクリュウプレスである事を特徴
とする請求項１ないし請求項３に記載の浚渫泥の処理方
法である。According to a fourth aspect of the present invention, there is provided the method for treating dredged mud according to any one of claims 1 to 3, wherein the dehydrator for separating water of the coagulated dredged mud is a screw press. .
【０００９】本発明の請求項５の発明は、（メタ）アク
リル系高分子凝集剤を添加混合するにあたり粒径０．２
ｍｍ以上の粒状高分子凝集剤を、機械的に剪断をかけ粒
径０．２ｍｍ以下の微細粒子として水に分散させた液
を、浚渫泥に添加する事を特徴とする請求項１ないし請
求項４に記載の浚渫泥の処理方法である。[0009] The invention of claim 5 of the present invention is characterized in that a (meth) acrylic polymer flocculant is added and mixed with a particle size of 0.2
A liquid obtained by mechanically shearing a granular polymer flocculant having a particle diameter of 0.2 mm or more and dispersing it in water as fine particles having a particle diameter of 0.2 mm or less is added to the dredge mud. 4. A method for treating dredging mud according to item 4.
【００１０】本発明の請求項６の発明は、アニオン性
（メタ）アクリル系高分子凝集剤のコロイド当量値が−
１．４〜−９．０ｍｅｑ／ｇであり分子量が４００万以
上であり、カチオン性（メタ）アクリル系高分子凝集剤
のコロイド当量値が１．０〜５．０ｍｅｑ／ｇであり分
子量が３００万以上である事を特徴とする請求項１ない
し請求項５に記載の浚渫泥の処理方法である。The invention according to claim 6 of the present invention is characterized in that the anionic (meth) acrylic polymer flocculant has a colloid equivalent value of-
1.4 to -9.0 meq / g, the molecular weight is 4,000,000 or more, the colloid equivalent value of the cationic (meth) acrylic polymer flocculant is 1.0 to 5.0 meq / g, and the molecular weight is 300. The dredging mud treatment method according to claim 1, wherein the number is at least 10,000.
【００１１】[0011]
【発明の実施の形態】本発明の限定の第一は、浚渫泥に
アニオン性（メタ）アクリル系高分子凝集剤を添加混合
した後、カチオン性（メタ）アクリル系高分子凝集剤を
添加混合して浚渫泥を凝集させ、次いで水を分離する事
により浚渫泥の流動性を除去する事を特徴とする浚渫泥
の処理方法である。 本発明の限定の第二は、浚渫泥の
塩濃度が水中１重量％以下である事を特徴とする。 前
述の如く湖沼の浚渫泥はヘドロ等を含み、その泥粒子は
部分的にアニオン性親水コロイドに被覆されているため
か海水中の底泥はアニオン性（メタ）アクリル系高分子
凝集剤単独で凝集するのに対しカチオン性（メタ）アク
リル系高分子凝集剤を追添加する必要がある。 ここに
言うアニオン性（メタ）アクリル系高分子凝集剤として
は、特にアクリルアミド系高分子凝集剤が有効であり、
ポリアクリルアミド部分加水分解物、アクリルアミド・
アクリル酸ナトリウム共重合物、アクリルアミド・アク
リロイルアミノアルキルスルホン酸ナトリウム共重合
物、アクリルアミド・アクリロイルアミノアルキルスル
ホン酸ナトリウム・アクリル酸ナトリウム共重合物等を
あげる事ができる。 工業的に安価である為にナトリウ
ム塩が用いられているが、カリウム塩やアンモニウム塩
でも効果的に問題が無い事は言うまでもない。 カチオ
ン性（メタ）アクリル系高分子凝集剤としてはジアルキ
ルアミノアルキル（メタ）アクリレートのアミン塩ある
いは四級アンモニウム塩の（共）重合物およびジアルキ
ルアミノアルキル（メタ）アクリルアミドのアミン塩あ
るいは四級アンモニウム塩の（共）重合物をあげる事が
できる。 ポリメタクリロイロキシエチルトリメチルア
ンモニウムクロリド、アクリルアミド・アクリロイロキ
シエチルトリメチルアンモニウムクロリド、アクリルア
ミド・ジメチルアミノプロピルアクリルアミド塩等を代
表例として特に好ましく例示する事ができる。 かかる
カチオン性（メタ）アクリル系高分子凝集剤は他の縮合
性高分子凝集剤等とは異なり、極めて高分子量で凝集力
の強い性質を有し、強度の高い凝集浚渫泥を与える事が
できる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First of all, a limitation of the present invention is that an anionic (meth) acrylic polymer flocculant is added to and mixed with dredging mud, and then a cationic (meth) acrylic polymer flocculant is added and mixed. This is a method for treating dredged mud, characterized by removing the fluidity of the dredged mud by coagulating the dredged mud and then separating water. A second aspect of the present invention is characterized in that the salt concentration of the dredging mud is 1% by weight or less in water. As mentioned above, since the dredged mud of lakes contains sludge, etc., and the mud particles are partially covered with anionic hydrocolloids, the bottom mud in seawater is made of anionic (meth) acrylic polymer flocculant alone. It is necessary to additionally add a cationic (meth) acrylic polymer flocculant to coagulate. As the anionic (meth) acrylic polymer flocculant referred to herein, an acrylamide polymer flocculant is particularly effective.
Polyacrylamide partial hydrolyzate, acrylamide
Sodium acrylate copolymer, acrylamide / acryloylaminoalkylsulfonic acid sodium copolymer, acrylamide / acryloylaminoalkylsulfonic acid sodium / sodium acrylate copolymer and the like can be mentioned. Sodium salts are used because they are industrially inexpensive, but needless to say, potassium salts and ammonium salts have no problem. Examples of the cationic (meth) acrylic polymer flocculant include an amine salt or a quaternary ammonium salt (co) polymer of dialkylaminoalkyl (meth) acrylate and an amine salt or quaternary ammonium salt of dialkylaminoalkyl (meth) acrylamide (Co) polymers. Polymethacryloyloxyethyltrimethylammonium chloride, acrylamide / acryloyloxyethyltrimethylammonium chloride, acrylamide / dimethylaminopropylacrylamide salt and the like can be particularly preferably exemplified. Such a cationic (meth) acrylic polymer flocculant, unlike other condensable polymer flocculants, has a very high molecular weight and a property of strong cohesive force, and can give a high-strength flocculated dredging mud. .
【００１２】本発明の限定の第三は、凝集浚渫泥を脱水
機にかけて水を分離する事により浚渫泥の流動性を除去
する事を特徴とする。 本発明の限定の第四は、凝集浚
渫泥の水を分離する脱水機がスクリュウプレスである事
を特徴とする。 凝集浚渫泥の水を分離する方法として
は各種の方法が考えられる。 例えば埋め立てにより上
澄みを排出する方法、土嚢袋に入れたりスクリーンで水
をきる方法も実際に行われている。 しかしながら、狭
い敷地で効率良く水を分離するには脱水機が不可欠であ
り、デハイドラム、ベルトプレス、フィルタープレス、
スクリュウプレス等の脱水機を使用する事ができる。
この中でもスクリュウプレスは泥質変動に対する耐性、
作業性、脱水ケーキの性状等の点で最も好ましい脱水機
である。A third limitation of the present invention is that the fluidity of the dredged sludge is removed by subjecting the flocculated dredged mud to a dehydrator to separate water. A fourth aspect of the present invention is characterized in that the dewatering device for separating the water of the coagulated dredging mud is a screw press. Various methods can be considered as a method of separating the water of the coagulated dredging mud. For example, a method of discharging the supernatant by landfill, a method of putting the sand in a sandbag or draining the water with a screen are actually used. However, a dewatering machine is indispensable to efficiently separate water on a small site, and dehydration drums, belt presses, filter presses,
A dehydrator such as a screw press can be used.
Among them, the screw press is resistant to muddy fluctuations,
This is the most preferred dehydrator in terms of workability, properties of the dehydrated cake, and the like.
【００１３】本発明の限定の第五は、（メタ）アクリル
系高分子凝集剤を添加混合するにあたり粒径０．２ｍｍ
以上の粒状高分子凝集剤を、機械的に剪断をかけ粒径
０．２ｍｍ以下の微細粒子として水に分散させた液を、
浚渫泥に添加する事を特徴とする。 市販の高分子凝集
剤は粉末高分子凝集剤と称する場合であっても最大粒径
１〜２ｍｍの顆粒状（ガラス破砕状）で市販されてい
る。 これは微粉であれば保存中に吸湿固結する危険性
が高い事および溶解時ママコに成りやすい事に配慮した
ものである。 かかる市販粒状高分子凝集剤をそのまま
浚渫泥に添加しても凝集はしない。 しかしながら粒径
０．２ｍｍ以下の微細粒子として水に分散させた液を浚
渫泥に添加すると微細粒子はごく短時間で溶解し浚渫泥
は凝集する。大粒径の製品状態で保存時の吸湿固結を防
止しながら、溶解時微細粒子として水に分散させるには
機械的に剪断をかける事が必要である。 かかる性能を
持つ機械はアーシェル株式会社よりコミトロールの商品
名で市販されている。 コミトロールを用いればアニオ
ン性（メタ）アクリル系高分子凝集剤もカチオン性（メ
タ）アクリル系高分子凝集剤も効率良く粒状で添加しな
がら微細粒子分散液を得る事ができる。 この限定は通
常の如く高分子凝集剤を水溶液として添加する方法を否
定するものではない。 しかしながら粒状の高分子凝集
剤を溶解するには時間がかかり、大量の浚渫泥に対応す
るには溶解設備が大がかりなものと成る。また油あるい
は塩水中に高分子凝集剤の微細粒子を分散させた商品を
用いれば短時間で溶解でき、溶解装置をコンパクトなも
のとする事ができる。 しかしながら、かかる分散型の
高分子凝集剤は分散媒による汚染を引き起こす恐れが有
り、不純物を含まぬ粉末高分子凝集剤の使用が好まし
い。A fifth limitation of the present invention is that a (meth) acrylic polymer flocculant is added and mixed with a particle size of 0.2 mm.
A liquid obtained by dispersing the above granular polymer flocculant in water as fine particles having a particle size of 0.2 mm or less by mechanical shearing,
It is characterized by being added to dredging mud. Even when a commercially available polymer flocculant is referred to as a powder polymer flocculant, it is commercially available in the form of granules (crushed glass) having a maximum particle size of 1 to 2 mm. This is in consideration of the fact that if the powder is fine, there is a high risk of moisture absorption and consolidation during storage, and that it tends to become mamako when dissolved. Even if such a commercially available granular polymer flocculant is added as it is to dredging mud, flocculation does not occur. However, when a liquid dispersed in water as fine particles having a particle size of 0.2 mm or less is added to the dredged mud, the fine particles dissolve in a very short time and the dredged mud aggregates. It is necessary to mechanically apply a shear to disperse in water as fine particles at the time of dissolution while preventing hygroscopic caking during storage in the state of a product having a large particle size. A machine having such performance is commercially available from Arschel Co., Ltd. under the trade name Comitrol. The use of Comitrol makes it possible to obtain a fine particle dispersion while efficiently adding both an anionic (meth) acrylic polymer flocculant and a cationic (meth) acrylic polymer flocculant in granular form. This limitation does not deny the usual method of adding a polymer flocculant as an aqueous solution. However, it takes a long time to dissolve the granular polymer flocculant, and the dissolution equipment becomes large in order to cope with a large amount of dredging mud. In addition, if a product in which fine particles of a polymer flocculant are dispersed in oil or salt water is used, dissolution can be performed in a short time, and the dissolution apparatus can be made compact. However, such a dispersion type polymer flocculant may cause contamination by a dispersion medium, and it is preferable to use a powdery polymer flocculant containing no impurities.
【００１４】本発明の限定の第六は、アニオン性（メ
タ）アクリル系高分子凝集剤のコロイド当量値が−１．
４〜−９．０ｍｅｑ／ｇであり分子量が４００万以上で
あり、カチオン性（メタ）アクリル系高分子凝集剤のコ
ロイド当量値が１．０〜５．０ｍｅｑ／ｇであり分子量
が３００万以上である事を特徴とする。 アニオン性
（メタ）アクリル系高分子凝集剤としてはポリアクリル
酸塩よりもアクリルアミド系のアニオン性高分子凝集剤
が有効であり適度のアニオン性基とアミド基を有する事
が望ましく前述のコロイド当量値の範囲が望ましい。
分子量は高い方が凝集力が強く、分子量が４００万以上
である事が望ましく、４００万未満では脱水性が劣る。
カチオン性（メタ）アクリル系高分子凝集剤のコロイ
ド当量値は高い方がケーキ含水率が下がり、流動性の無
い固い性状と成る。 分子量はアニオン性高分子凝集剤
と同様に高い方が凝集力が強く、分子量が３００万以上
である事が望ましく、３００万未満では脱水性が劣る。A sixth limitation of the present invention is that the colloid equivalent value of the anionic (meth) acrylic polymer flocculant is -1.
4 to -9.0 meq / g, molecular weight of 4,000,000 or more, colloid equivalent of cationic (meth) acrylic polymer flocculant of 1.0 to 5.0 meq / g, and molecular weight of 3,000,000 or more It is characterized by being. As the anionic (meth) acrylic polymer flocculant, an acrylamide-based anionic polymer flocculant is more effective than polyacrylate, and preferably has a suitable anionic group and amide group, and has the above-mentioned colloid equivalent value. Is desirable.
The higher the molecular weight, the stronger the cohesive force, and the molecular weight is desirably 4,000,000 or more. If the molecular weight is less than 4,000,000, the dehydration property is poor.
The higher the colloid equivalent value of the cationic (meth) acrylic polymer flocculant, the lower the water content of the cake and the harder the fluidity. The higher the molecular weight is, like the anionic polymer coagulant, the stronger the cohesive force is, and it is desirable that the molecular weight is 3,000,000 or more.
【００１５】[0015]
【実施例】次に実施例によって、本発明を具体的に説明
するが、本発明はその要旨を超えない限り、以下の実施
例に制約されるものではない。EXAMPLES Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist.
【００１６】（アニオン性高分子凝集剤組成）表−１に
本発明の実施例で用いるアニオン性高分子凝集剤の組成
を記載する。全て、市販粒状凝集剤であり、最大粒径
１．２ｍｍである。(Composition of anionic polymer flocculant) Table 1 shows the composition of the anionic polymer flocculant used in the examples of the present invention. All are commercial particulate flocculants with a maximum particle size of 1.2 mm.
【００１７】[0017]
【表１】 [Table 1]
【００１８】（カチオン性高分子凝集剤組成）表−２に
本発明の実施例で用いるカチオン性高分子凝集剤の組成
を記載する。全て、市販粒状凝集剤であり、最大粒径
２．０ｍｍである。(Composition of cationic polymer flocculant) Table 2 shows the composition of the cationic polymer flocculant used in Examples of the present invention. All are commercially available granular coagulants with a maximum particle size of 2.0 mm.
【００１９】[0019]
【表２】 [Table 2]
【００２０】（実施例ー１）某湖の底泥（懸濁物濃度２
５重量％、塩濃度０．４重量％）をポンプ浚渫し、表−
１および表−２記載の高分子凝集剤をコミトロールによ
り連続的に０．２重量％の水分散液として、逐次添加混
合し、富国工業株式会社製のトロンメル付きスクリュウ
プレスにより脱水した。 結果を表−３に示す。 表−
３記載の凝集剤添加量はアニオン性およびカチオン性の
両凝集剤ともに浚渫泥の有り姿あたり、すなわち対液あ
たりの添加量である。(Example-1) Sediment of a certain lake (suspension concentration 2)
5% by weight, salt concentration 0.4% by weight)
The polymer flocculants shown in Table 1 and Table 2 were continuously added and mixed as a 0.2% by weight aqueous dispersion with a comtrol, and dehydrated with a screw press with a trommel manufactured by Fukoku Kogyo Co., Ltd. The results are shown in Table-3. Table-
The addition amount of the flocculant described in 3 is the amount of the dredging sludge in both the anionic and cationic flocculants, that is, the amount added per liquid.
【００２１】[0021]
【表３】 [Table 3]
【００２２】[0022]
【発明の効果】本発明の凝集方法により、淡水湖沼にお
ける浚渫泥の凝集脱水処理が効率良く行われ、浚渫泥の
減量固形化による外部搬出作業を容易にする事が狭い敷
地においても簡易に行う事ができる。According to the coagulation method of the present invention, the coagulation and dewatering of the dredged mud in a freshwater lake is efficiently performed, and the work to be carried out outside by reducing and solidifying the dredged mud is easily performed even on a narrow site. Can do things.
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成９年１月１４日[Submission date] January 14, 1997
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１７】[0017]
【表１】 [Table 1]
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｅ０２Ｆ 7/00 Ｅ０２Ｆ 7/00 Ｄ (72)発明者 三島 芳夫 東京都品川区西五反田２−20−１ ハイモ 株式会社内──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI // E02F 7/00 E02F 7/00 D (72) Inventor Yoshio Mishima 2-20-1 Nishigotanda, Shinagawa-ku, Tokyo HIMO Corporation Inside
Claims (6)
高分子凝集剤を添加混合した後、カチオン性（メタ）ア
クリル系高分子凝集剤を添加混合して浚渫泥を凝集さ
せ、次いで水を分離する事により浚渫泥の流動性を除去
する事を特徴とする浚渫泥の処理方法。Claims 1. An anionic (meth) acrylic polymer flocculant is added to and mixed with dredging mud, and then a cationic (meth) acrylic polymer flocculant is added and mixed to coagulate the dredging mud. A method for treating dredged mud, comprising removing the fluidity of dredged mud by separating.
る事を特徴とする請求項１に記載の浚渫泥の処理方法。2. The method for treating dredging mud according to claim 1, wherein the salt concentration of the dredging mud is 1% by weight or less in water.
る事により浚渫泥の流動性を除去する事を特徴とする請
求項１ないし請求項２に記載の浚渫泥の処理方法。3. The method for treating dredged mud according to claim 1, wherein the fluidity of the dredged mud is removed by subjecting the flocculated dredged mud to a dehydrator to separate water.
リュウプレスである事を特徴とする請求項１ないし請求
項３に記載の浚渫泥の処理方法。4. The method for treating dredging mud according to claim 1, wherein the dehydrator for separating water from the coagulated dredging mud is a screw press.
混合するにあたり粒径０．２ｍｍ以上の粒状高分子凝集
剤を、機械的に剪断をかけ粒径０．２ｍｍ以下の微細粒
子として水に分散させた液を、浚渫泥に添加する事を特
徴とする請求項１ないし請求項４に記載の浚渫泥の処理
方法。5. A method for adding and mixing a (meth) acrylic polymer flocculant, mechanically shearing a granular polymer flocculant having a particle size of 0.2 mm or more into water as fine particles having a particle size of 0.2 mm or less. The method for treating dredging mud according to claim 1, wherein the liquid dispersed in the dredging mud is added to the dredging mud.
集剤のコロイド当量値が−１．４〜−９．０ｍｅｑ／ｇ
であり分子量が４００万以上であり、カチオン性（メ
タ）アクリル系高分子凝集剤のコロイド当量値が１．０
〜５．０ｍｅｑ／ｇであり分子量が３００万以上である
事を特徴とする請求項１ないし請求項５に記載の浚渫泥
の処理方法。6. The colloid equivalent value of the anionic (meth) acrylic polymer flocculant is -1.4 to -9.0 meq / g.
And the molecular weight is 4,000,000 or more, and the colloid equivalent value of the cationic (meth) acrylic polymer flocculant is 1.0
The method for treating dredged mud according to any one of claims 1 to 5, wherein the molecular weight is 3 to 5.0 meq / g and the molecular weight is 3,000,000 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8307525A JPH10128010A (en) | 1996-11-05 | 1996-11-05 | Treatment of dredge mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8307525A JPH10128010A (en) | 1996-11-05 | 1996-11-05 | Treatment of dredge mud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10128010A true JPH10128010A (en) | 1998-05-19 |
Family
ID=17970145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8307525A Pending JPH10128010A (en) | 1996-11-05 | 1996-11-05 | Treatment of dredge mud |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10128010A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005008842A (en) * | 2003-06-17 | 2005-01-13 | Kansai Mc Lease Kk | Syneresis promoter for civil engineering |
| JP2005125214A (en) * | 2003-10-23 | 2005-05-19 | Hymo Corp | Dewatering method of organic sludge |
| JP2008055342A (en) * | 2006-08-31 | 2008-03-13 | Kadoya Kogyo Kk | Sand-like inorganic flocculant for batch treatment of emulsified water such as cement |
| US20130299433A1 (en) * | 2011-01-14 | 2013-11-14 | Sony Corporation | Plant-derived flocculant, flocculant mixture, method of flocculation, and method for preparing plant-derived flocculant |
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| JPH04322784A (en) * | 1991-04-22 | 1992-11-12 | Konica Corp | Treatment of waste processing liquid for photosensitive material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005008842A (en) * | 2003-06-17 | 2005-01-13 | Kansai Mc Lease Kk | Syneresis promoter for civil engineering |
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| JP2005125214A (en) * | 2003-10-23 | 2005-05-19 | Hymo Corp | Dewatering method of organic sludge |
| JP2008055342A (en) * | 2006-08-31 | 2008-03-13 | Kadoya Kogyo Kk | Sand-like inorganic flocculant for batch treatment of emulsified water such as cement |
| US20130299433A1 (en) * | 2011-01-14 | 2013-11-14 | Sony Corporation | Plant-derived flocculant, flocculant mixture, method of flocculation, and method for preparing plant-derived flocculant |
| US9611157B2 (en) * | 2011-01-14 | 2017-04-04 | Sony Corporation | Plant-derived flocculant, flocculant mixture, method of flocculation, and method for preparing plant-derived flocculant |
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