JPH01139198A - Method for reforming sludge or the like - Google Patents
Method for reforming sludge or the likeInfo
- Publication number
- JPH01139198A JPH01139198A JP29830887A JP29830887A JPH01139198A JP H01139198 A JPH01139198 A JP H01139198A JP 29830887 A JP29830887 A JP 29830887A JP 29830887 A JP29830887 A JP 29830887A JP H01139198 A JPH01139198 A JP H01139198A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- water
- cement
- sludge generated
- polymeric substances
- 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.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims description 16
- 238000002407 reforming Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000011396 hydraulic cement Substances 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 150000001768 cations Chemical class 0.000 claims abstract description 13
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- 230000000737 periodic effect Effects 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims description 63
- 239000004568 cement Substances 0.000 claims description 20
- 239000010865 sewage Substances 0.000 claims description 12
- 239000011398 Portland cement Substances 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 10
- 238000004065 wastewater treatment Methods 0.000 claims description 10
- 150000002823 nitrates Chemical class 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 8
- 150000004679 hydroxides Chemical class 0.000 claims description 8
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 150000003841 chloride salts Chemical class 0.000 claims 2
- 229920003169 water-soluble polymer Polymers 0.000 abstract description 14
- 229920000642 polymer Polymers 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 5
- 230000003311 flocculating effect Effects 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 10
- 230000015271 coagulation Effects 0.000 description 10
- 238000005345 coagulation Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 229920000591 gum Polymers 0.000 description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 150000001805 chlorine compounds Chemical class 0.000 description 6
- 230000016615 flocculation Effects 0.000 description 6
- 238000005189 flocculation Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229920001059 synthetic polymer Polymers 0.000 description 6
- 230000008719 thickening Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 229920002907 Guar gum Polymers 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- -1 cation salts Chemical class 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000000665 guar gum Substances 0.000 description 4
- 235000010417 guar gum Nutrition 0.000 description 4
- 229960002154 guar gum Drugs 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000000230 xanthan gum Substances 0.000 description 4
- 235000010493 xanthan gum Nutrition 0.000 description 4
- 229920001285 xanthan gum Polymers 0.000 description 4
- 229940082509 xanthan gum Drugs 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- SATHPVQTSSUFFW-UHFFFAOYSA-N 4-[6-[(3,5-dihydroxy-4-methoxyoxan-2-yl)oxymethyl]-3,5-dihydroxy-4-methoxyoxan-2-yl]oxy-2-(hydroxymethyl)-6-methyloxane-3,5-diol Chemical compound OC1C(OC)C(O)COC1OCC1C(O)C(OC)C(O)C(OC2C(C(CO)OC(C)C2O)O)O1 SATHPVQTSSUFFW-UHFFFAOYSA-N 0.000 description 2
- 244000215068 Acacia senegal Species 0.000 description 2
- 239000001904 Arabinogalactan Substances 0.000 description 2
- 229920000189 Arabinogalactan Polymers 0.000 description 2
- 241000416162 Astragalus gummifer Species 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 241000218691 Cupressaceae Species 0.000 description 2
- 235000017788 Cydonia oblonga Nutrition 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- 229920000084 Gum arabic Polymers 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 229920001615 Tragacanth Polymers 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 235000010489 acacia gum Nutrition 0.000 description 2
- 239000000205 acacia gum Substances 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 235000010443 alginic acid Nutrition 0.000 description 2
- 229920000615 alginic acid Polymers 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- 235000019312 arabinogalactan Nutrition 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 239000011400 blast furnace cement Substances 0.000 description 2
- 150000001642 boronic acid derivatives Chemical class 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 150000001767 cationic compounds Chemical class 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 229920001477 hydrophilic polymer Polymers 0.000 description 2
- 150000002927 oxygen compounds Chemical class 0.000 description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 150000004804 polysaccharides Chemical class 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229940032147 starch Drugs 0.000 description 1
Abstract
Description
【発明の詳細な説明】
ａ、 産業上の利用分野
本発明は土木工事や浚渫工事等から発生する軟弱な土砂
やヘドロ類、上下水道処理により発生する汚泥スラグ及
び工場廃水処理より発生するスラッジ等（以下「ヘドロ
等」という、）を再利用、又は廃棄容易な形態にするヘ
ドロ等の改質方法に関する。[Detailed Description of the Invention] a. Industrial Application Field The present invention is applicable to soft earth and sand and sludge generated from civil engineering work, dredging work, etc., sludge slag generated from water and sewage treatment, and sludge generated from factory wastewater treatment. The present invention relates to a method for reforming sludge (hereinafter referred to as ``sludge, etc.'') into a form that can be easily recycled or disposed of.
ｂ、 従来の技術
一般に土木工事や浚渫工事、上下水道処理及び工場廃水
処理等から発生するヘドロ等は、地域によって異なるが
、約５０から９０％の含水率を有している。b. Conventional technology Generally, sludge generated from civil engineering work, dredging work, water supply and sewage treatment, factory wastewater treatment, etc. has a moisture content of about 50 to 90%, although it varies depending on the region.
従来は、これらの多量の水分を含有するヘドロ等を水分
４５から６０％以下まで水を絞った後でなければ、セメ
ント系の固化剤などを混合して処理することが出来ない
。Conventionally, sludge and the like containing a large amount of water cannot be treated by mixing with a cement-based solidifying agent until the water content has been reduced from 45% to 60%.
Ｃ０発明が解決しようとする問題点
しかしながら、従来の如くセメント系の固化剤のみを用
いて、ヘドロ等を処理する方法は、処理後のヘドロ等が
流動性を失い、かつそれが一定の強度以上に達するまで
に長時間（具体的には２４から７２時間）を要する欠点
があった。Problems to be Solved by the C0 Invention However, in the conventional method of treating sludge, etc. using only a cement-based solidifying agent, the sludge, etc. after treatment loses fluidity, and the strength exceeds a certain level. There is a drawback that it takes a long time (specifically, 24 to 72 hours) to reach this point.
また、固化後のヘドロ等に、一定態上の強度を保持させ
るためには、多量のセメント系固化剤（具体的には１０
から１５重量％）を添加する必要があり、またこのセメ
ント系の固化剤を、１０％以上ヘドロ等に添加すると、
固化過程のヘドロ等のｐＨが１２以上とな、す、ｐＨを
調整しなければならない。In addition, in order to maintain a constant strength of sludge etc. after solidification, a large amount of cement-based solidifying agent (specifically 10%
15% by weight), and if this cement-based solidifying agent is added to sludge in an amount of 10% or more,
If the pH of the sludge during the solidification process is 12 or higher, the pH must be adjusted.
又このｐｏの調整が非常に難しいという欠点が指摘され
ていた。Furthermore, it has been pointed out that the PO is extremely difficult to adjust.
本願発明は、上記問題点を解決しようとするもので、そ
の目的は、ヘドロ等を効率良（固化し、再利用、又は廃
棄容易な形態にするヘドロ等の改質方法を提供するもの
である。The present invention attempts to solve the above-mentioned problems, and its purpose is to provide a method for reforming sludge, etc., in which sludge, etc. is efficiently (solidified, reused, or easily disposed of). .
ｄ、 問題点を解決すにための手段
本願発明は、上記問題点を解決しようとするもので、そ
の要旨は天然水溶性高分子物質又はその半合成高分子物
質、凝集性を有する合成水溶性高分子物質又は吸水性樹
脂から選ばれた１種、または２種以上の高分子物質を、
ヘドロ等に添加混合し、次いで２価以上の陽イオンから
成る水酸化物。d. Means for solving the problems The present invention attempts to solve the above-mentioned problems, and its gist is that natural water-soluble polymeric substances or their semi-synthetic polymeric substances, synthetic water-soluble polymeric substances with cohesive properties, One or more polymeric substances selected from polymeric substances and water-absorbing resins,
A hydroxide consisting of divalent or higher cations that is added and mixed with sludge, etc.
塩化物、硫酸塩、又は硝酸塩から選ばれた１種、又は２
種以上の塩類及び／又は水硬性セメントを混合せしめる
ことを特徴とするヘドロ等の改質方法にある。One or two selected from chloride, sulfate, or nitrate
A method for modifying sludge, etc., characterized by mixing more than one kind of salts and/or hydraulic cement.
すなわち、親水性の高い高分子物質自身が、その特徴と
して有する増粘効果、吸水効果、凝集効果等を利用して
ヘドロ等の増粘、凝集、脱水等を行い、次いで２価以上
の陽イオン檜）ら成る水酸化物、塩化物、硫酸塩、又は
硝酸塩から選ばれた１種、又は２種以上の塩類及び／又
は水硬性セメント等の固化剤を添加し、適度の固さを持
った粉状物にし、再利用、あるいは廃棄出来る土壌にす
るものである。In other words, the highly hydrophilic polymer substance itself thickens, coagulates, dehydrates sludge, etc. by utilizing its characteristic thickening effect, water absorption effect, coagulation effect, etc., and then removes divalent or higher cations. One or more salts selected from hydroxides, chlorides, sulfates, or nitrates consisting of cypress (Japanese cypress) and/or a solidifying agent such as hydraulic cement are added to give suitable hardness. It is turned into powder and turned into soil that can be reused or disposed of.
一般による知られている天然水溶性高分子物質、又はそ
の半合成高分子物質、凝集性を有する合成水溶性高分子
物質又は吸水性樹脂等は水溶性、増粘性、吸水性、凝集
性等を有する。これらの高分子物質は、チキントロピッ
ク性を存し、含水率の高いヘドロ等に添加混合すると、
ヘドロ等の粒子にこれらの高分子物質が物理的化学的に
吸着し、・同時に粒子表面の電荷を中和し、或はヘドロ
等中に含まれる水分を吸収し、ヘドロ等全体を凝集。Generally known natural water-soluble polymer substances, semi-synthetic polymer substances thereof, synthetic water-soluble polymer substances with cohesive properties, water-absorbing resins, etc. have water solubility, thickening properties, water absorption properties, cohesive properties, etc. have These polymeric substances have chicken-tropic properties, and when mixed with sludge with a high moisture content,
These polymer substances physically and chemically adsorb to particles of sludge, etc., and at the same time neutralize the charge on the surface of the particles, or absorb the water contained in the sludge, etc., causing the entire sludge to coagulate.
凝結状態に保つ、 ゛
次いで、この凝集、凝結状態をより効果的に速やかに達
成するために、２価以上の陽イオン塩類を添加し、凝集
、凝結状態をより良いものにし、再利用、又は廃棄容易
な状態に改質する。゛Next, in order to achieve this flocculation and flocculation state more effectively and quickly, divalent or higher cation salts are added to improve the flocculation and flocculation state, and the product can be reused or Modify to a state that is easy to dispose of.
しかし、この高分子物質と２価以上の゛陽イオン塩類の
添加は、同時に行っても、上記の効果は同様に得られる
。However, even if the polymer substance and the divalent or higher cation salts are added at the same time, the above effects can be obtained in the same way.
さらに、凝集、凝結状態或は強度などが要求される場合
には、適宜に水硬性セメントを添加混合して、ヘドロ等
の凝集、凝結状態或は強度などをより効果的に向上せし
めるものである。Furthermore, if cohesion, coagulation state, strength, etc. are required, hydraulic cement may be appropriately added and mixed to more effectively improve the coagulation, coagulation state, strength, etc. of sludge, etc. .
この凝集、凝結状態にあるヘドロ等に、水硬性セメント
を添加すると、水硬性セメント粒子がヘドロ等や高分子
物質等と反応、或は物理的吸着などを起こして、ヘドロ
等の全体を凝集、凝結状態或は強度などを向上せしめる
ものである。When hydraulic cement is added to the sludge, etc. that is in a coagulated or coagulated state, the hydraulic cement particles react with the sludge, etc. and polymer substances, or cause physical adsorption, causing the entire sludge, etc. to coagulate. It improves the coagulation state or strength.
上記天然水溶性高分子物質又はその半合成高分子物質と
しては、グアーガム、ローカストビンガム、クインスシ
ードガム、アラビノガラクタンガム、アラビアガム、ト
ラガントガム、澱粉、ザンサンガム、ザンコート、ゼラ
チン、サイリュームガム、アルギン酸塩類、カルボキシ
メチルセルロース、カルボキシメチルハイドロオキシエ
チルセルロース等その他これらに類僚する天然水溶性高
分子物質又はその半合成高分子物質が用いることができ
る０次に、凝集性を有する合成水溶性高分子物質として
は、ポリビニルアルコール、ポリビニルピロリドン、ポ
リビニルメタアクリレート。The natural water-soluble polymer substances or their semi-synthetic polymer substances include guar gum, locust Bingham gum, quince seed gum, arabinogalactan gum, gum arabic, gum tragacanth, starch, xanthan gum, xancort, gelatin, sirium gum, alginates, Synthetic water-soluble polymer substances having zero-order cohesive properties that can be used include carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, and other similar natural water-soluble polymer substances, or semi-synthetic polymer substances thereof, including: Polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl methacrylate.
ポリアクリル酸ソーダ、ポリエチレンオキサイド。Sodium polyacrylate, polyethylene oxide.
ビーガム等とこれらに類似する合成水溶性高分子物質が
用いることができる。さらに、吸水性樹脂としては、ポ
リアクリル酸系、ポリサンカライド系、又はこれらの共
重合体系、イソブチレンと無水マレイン酸共重合体系等
の樹脂に代表されるような吸水性樹脂を用いることがで
きる。Veegum and similar synthetic water-soluble polymer substances can be used. Further, as the water-absorbing resin, water-absorbing resins typified by polyacrylic acid-based, polysancalide-based, or copolymer-based resins thereof, isobutylene and maleic anhydride copolymer-based resins, etc. can be used. .
これらの高分子物質以外のものでも、水溶性であり、か
つ増粘性、吸水性、凝集性等を有するものであれば、本
発明に効果的に用いることができる。Materials other than these polymeric substances can be effectively used in the present invention as long as they are water-soluble and have thickening properties, water absorption properties, cohesive properties, etc.
これらの高分子物質の添加量の範囲は、ヘドロ等の種類
、ヘドロ等の含水率によって異なるが、特に含水率とは
密接な関係にある。The range of the amount of these polymeric substances added varies depending on the type of sludge and the water content of the sludge, but is particularly closely related to the water content.
ヘドロ等の含水率と高分子物質の添加量の範囲としては
、■含水率２０〜５０％の場合、ヘドロ等１ｋｇ当りに
対し、高分子物質を０．５〜８ｋｇの範囲で加える。ま
た■含水率４０〜７０％の場合は、ヘドロ等１Ｊｔ１当
りに対し、高分子物質を１．０〜１５ｋｇの範囲で加え
る。■含水率６０〜８０％の場合は、ヘドロ等１＆７当
りに対し、高分子物質を５〜２５ｋｇの範囲で加え、■
含水率８０％以上の場合は、ヘドロ等１ｄ当りに対し、
高分子物質を２０ｋｇ以上加える。The range of the water content of sludge, etc. and the amount of the polymeric substance to be added is as follows: (1) When the water content is 20-50%, add 0.5-8 kg of the polymeric substance per 1 kg of sludge, etc.; (2) When the water content is 40 to 70%, add 1.0 to 15 kg of a polymeric substance per 1 Jt of sludge, etc. ■If the water content is 60 to 80%, add 5 to 25 kg of a polymeric substance per 1 & 7 of sludge, etc.;■
If the water content is 80% or more, per 1 d of sludge, etc.
Add 20 kg or more of polymeric material.
しかし、含水率が８０％以上となると、高分子物質の使
用量が急激に増大する。However, when the water content exceeds 80%, the amount of polymeric material used increases rapidly.
これらの高分子物質の添加量は、ヘドロ等の種類及び含
水率によって適正値があるため、添加量はあらかじめヘ
ドロ等の含水率を測定し、添加量を確認のうえ使用する
ことが、より効果的である。The amount of these polymeric substances added has an appropriate value depending on the type of sludge, etc. and its water content, so it is best to measure the water content of the sludge, etc. in advance and confirm the amount before use. It is true.
水硬性セメントとしては、普通ポルトランドセメント、
速硬性ポルトランドセメント、高炉セメント、その他の
改良されたポルトランドセメント。Hydraulic cements include ordinary portland cement,
Fast-setting Portland cement, blast furnace cement and other improved Portland cements.
アルミナセメント、カルシウムセメント、フライアッシ
ュやポゾランを含有するセメント類等を用いることがで
きる。Alumina cement, calcium cement, cements containing fly ash or pozzolan, etc. can be used.
これらの水硬性セメントの添加量は、使用した高分子物
質の添加量にもよるが、ヘドロ等の含水率に影響される
。この水硬性セメントは、ヘドロ等１に１当りに対し、
１０〜１００ｋｇの範囲にある。また、この水硬性セメ
ントの添加量については、ヘドロ等の種類及びヘドロ等
の含水率により、適正の範囲があるので、予めこれらを
確認することが、効果的に水硬性セメントを使用するた
めに必要である。The amount of these hydraulic cements added depends on the amount of the polymeric substance used and is influenced by the water content of sludge and the like. This hydraulic cement is effective against 1 in 1 sludge, etc.
It is in the range of 10-100 kg. In addition, there is an appropriate range for the amount of hydraulic cement added depending on the type of sludge and the water content of the sludge, so it is important to check these in advance in order to use hydraulic cement effectively. is necessary.
２価以上の陽イオンからなる塩類としては、周期律表Ｉ
Ｉ ａｌ ｎ ｂ＋ Ｄｌａ、 ｍｂ、 Ｎｂ、 Ｖｂ
、 Ｖｒｂ、■ｂ或は■族から選ばれた元素の水酸化物
、塩化物、硫酸塩。Salts consisting of divalent or higher cations are listed in Periodic Table I
I al n b+ Dla, mb, Nb, Vb
, Vrb, hydroxide, chloride, or sulfate of an element selected from group ■b or group ■.
硝酸塩のうち水に易溶性或は難溶性のもので、例えば、
マグネシウム、カルシウム、アルミニウム等の水酸化物
、マグネシウム、カルシウム、バリウム、アルミニウム
、ジルコニウム、クロム、マンガン等の塩化物、硫酸塩
又は硝酸塩である。そして酸素化合物で陰イオン化する
化合物、例えばホウ酸塩、アルミン酸塩、クロム酸塩１
重クロム酸塩、そして過マンガン酸塩なども使用可能で
ある。Nitrates that are easily or poorly soluble in water, such as:
These are hydroxides of magnesium, calcium, aluminum, etc., and chlorides, sulfates, or nitrates of magnesium, calcium, barium, aluminum, zirconium, chromium, manganese, etc. and compounds that anionize with oxygen compounds, such as borates, aluminates, chromates 1
Dichromates and permanganates can also be used.
本発明で処理できるヘドロ等の含水率は２０から９０％
のものであるが、含水率２０から５０％のものが効果的
に処理できる。The moisture content of sludge, etc. that can be treated with the present invention is 20 to 90%.
However, those with a moisture content of 20 to 50% can be effectively treated.
ｅ、 実施例 以下本発明を実施例を参照してさらに詳しく説明する。e. Example The present invention will be explained in more detail below with reference to Examples.
（実施例−１〕
土木工事で発生する軟弱な土砂（含水率２９．３％、シ
ルト及び粘土骨６５．３％）を１＆７にザンサンガム。(Example-1) Soft earth and sand (moisture content 29.3%, silt and clay bone 65.3%) generated during civil engineering work was mixed with xanthan gum 1&7.
消石灰を加えて混練し、−軸圧縮強度の経時変化を測定
した。Slaked lime was added and kneaded, and the change in -axial compressive strength over time was measured.
〔実施例−２〕
下水道処理より生ずる汚泥スラグ（含水率４４．４％）
１ｉｄにポリサンカライド系の吸水性樹脂石こう及びポ
ルトランドセメントを５０ｋｇを加えて混練し、−軸圧
縮強度の経時変化を測定した。[Example-2] Sludge slag generated from sewage treatment (water content 44.4%)
1id was mixed with 50 kg of polysancharide-based water-absorbing resin gypsum and Portland cement, and the change in -axial compressive strength over time was measured.
〔実施例−３〕
浚渫工事から得られるヘドロ（含水率７０．２％）ＩＪ
ｌｊにグアーガム、塩化カルシウム及びアルミナセメン
トを加えて混練し、−軸圧縮強度の経時変化を測定した
。[Example-3] Sludge (water content 70.2%) IJ obtained from dredging work
Guar gum, calcium chloride and alumina cement were added to lj and kneaded, and the change in -axial compressive strength over time was measured.
ｆ、 発明の効果
本発明によれば、土木工事や浚渫工事等から発生する軟
弱な土砂やヘドロ類、上下水道処理により発生する汚泥
スラグ及び工場廃水処理により発生するスラッジ等を効
率よく再利用し、廃棄容易な形態にすることができる。f. Effects of the Invention According to the present invention, soft earth and sand and sludge generated from civil engineering work, dredging work, etc., sludge generated from water and sewage treatment, sludge generated from factory wastewater treatment, etc. can be efficiently reused. , it can be made into a form that is easy to dispose of.
特許出願人 株式会社 チルナイト （ほか２名） 手 続 争甫 正 書１発） 昭和６２年１２月２８日 １、事件の表示 昭和６２年特許願第２９８３０８号 ２、発明の名称 スラッジ類の改質方法 ３、補正をする者 事件との関係 特許出願人 名称 株式会社 チルナイト ４、代理人 〒１０７ 住所 東京都港区赤坂３丁目２番３号（ほか２名） ５、補正の対象 明細書の全文。Patent applicant: Chill Night Co., Ltd. (2 others) 1 copy of the original text) December 28, 1986 1.Display of the incident 1986 Patent Application No. 298308 2. Name of the invention Method for reforming sludge 3. Person who makes corrections Relationship to the case Patent applicant Name: Chill Night Co., Ltd. 4. Agent〒107 Address: 3-2-3 Akasaka, Minato-ku, Tokyo (and 2 others) 5. Subject of correction Full text of the statement.
訂正明細書
１、 発明の名称
スラッジ類の改質方法
２、特許請求の範囲
（１） 天然水溶性高分子物質又はその半合成高分子
物質、凝集性を有する合成水溶性高分子物質又は吸水性
樹脂から選ばれた１種、又は２種以上の高分子物質を、
土木工事や浚渫工事等から発生する軟弱な土砂やヘドロ
等、上下水道処理により発生する汚泥スラッジ及び工場
廃水処理により発生するスラッジ等に添加混合し、次い
で、２価以上の陽イオンからなる水酸化物、塩化物、硫
酸塩又は硝酸塩から選ばれた１種、又は２種以上の化合
物及び／又は水硬性セメントを混合せしめることを特徴
とする、土木工事や浚渫工事等から発生する軟弱な土砂
やヘドロ等、上下水道処理により発生する汚泥スラッジ
及び工場廃水処理により発生するスラッジ類の改質方法
。Amended specification 1, Title of the invention Method for reforming sludge 2, Claims (1) Natural water-soluble polymeric substances or semi-synthetic polymeric substances thereof, synthetic water-soluble polymeric substances with cohesive properties or water absorbing properties One or more polymeric substances selected from resins,
It is added to and mixed with soft earth and sand and sludge generated from civil engineering work and dredging, etc., sludge generated from water and sewage treatment, and sludge generated from factory wastewater treatment, and then hydroxide consisting of divalent or higher cations. Soft earth and sand generated from civil engineering work, dredging work, etc. is characterized by mixing one or more compounds selected from compounds, chlorides, sulfates, and nitrates and/or hydraulic cement. A method for reforming sludge, such as sludge, generated from water and sewage treatment, and sludge generated from factory wastewater treatment.
（２）２価以上の陽イオンが、周期律表１）ａ、■ｂ。(2) Cations with a valence of two or more are those in the Periodic Table 1) a, ■b.
１）１’ａ、［Ｉｂ、ＩＶｂ、Ｖｂ、Ｖｌｂ、Ｗｂ ｖ
ｉは■族から選ばれた元素の水酸化物、塩化物、硫酸塩
または硝酸塩から選ばれた１種又は２種以上の、塩類で
ある、特許請求の範囲（１）項記載のスラッジ類の改質
方法。1) 1'a, [Ib, IVb, Vb, Vlb, Wb v
The sludge according to claim (1), wherein i is one or more salts selected from hydroxides, chlorides, sulfates, and nitrates of elements selected from group (1). Modification method.
（３） 水硬性セメントが、ポルトランド系セメント
、アルミナ系セメント、特殊セメント又はこれらとフラ
イアッシュ、ポゾラン等を含有した水硬性セメントであ
る、特許請求の範囲第ｆｉ１項記載のスラッジ類の改質
方法。(3) Modification of sludge according to claim 1, wherein the hydraulic cement is a Portland cement, an alumina cement, a special cement, or a hydraulic cement containing these together with fly ash, pozzolan, etc. Method.
３、発明の詳細な説明
ａ、 産業上の利用分野
本発明は土木工事や浚渫工事等から発生する軟弱な土砂
やヘドロ類、上下水道処理により発生する汚泥スラッジ
及び工場廃水処理より発生するスラッジ等（以下「ヘド
ロ等」という、）を再利用、又は廃棄容易な形態にする
ヘドロ等の改質方法に関する。3. Detailed Description of the Invention a. Industrial Field of Application The present invention is applicable to soft earth and sand and sludge generated from civil engineering work, dredging work, etc., sludge generated from water and sewage treatment, sludge generated from factory wastewater treatment, etc. The present invention relates to a method for reforming sludge (hereinafter referred to as ``sludge, etc.'') into a form that can be easily recycled or disposed of.
ｂ、 従来の技術
一般に土木工事や浚渫工事、上下水道処理及び工場廃水
処理等から発生するヘドロ等は、地域によって異なるが
、約５０から９０％の含水率を有している。b. Conventional technology Generally, sludge generated from civil engineering work, dredging work, water supply and sewage treatment, factory wastewater treatment, etc. has a moisture content of about 50 to 90%, although it varies depending on the region.
従来は、これらの多量の水分を含有するヘドロ等を水分
４５から６０％以下まで水を絞った後でなければ、セメ
ント系の固化剤などを混合して処理することが出来ない
。Conventionally, sludge and the like containing a large amount of water cannot be treated by mixing with a cement-based solidifying agent until the water content has been reduced from 45% to 60%.
Ｃ０本発明が解決しようとする問題点
しかしながら、従来の如くセメント系の固化剤のみを用
いて、ヘドロ等を処理する方法は、処理後のヘドロ等が
流動性を失い、かつそれが一定の強度以上に達するまで
に長時間（具体的には２４から７２時間）を要する欠点
があった。C0 Problems to be Solved by the Present Invention However, in the conventional method of treating sludge, etc. using only a cement-based solidifying agent, the sludge, etc. after treatment loses fluidity and does not have a certain strength. There is a drawback that it takes a long time (specifically, 24 to 72 hours) to reach the above.
また、固化後のヘドロ等に、必要以上の強度を保持させ
るためには、多量のセメント系固化剤（具体的には１０
から１５重量％）を添加する必要があり、またこのセメ
ント系の固化剤を、１０％以上ヘドロ等に添加すると、
固化過程のヘドロ等のｐＨが１２以上となり、廃棄処分
するためにはｐＨを中性付近に調整しなければならない
、このｐＨの調整が非常に難しいという欠点が指摘され
ていた。In addition, in order to make the sludge after solidification retain more strength than necessary, a large amount of cement-based solidifying agent (specifically, 10%
15% by weight), and if this cement-based solidifying agent is added to sludge in an amount of 10% or more,
It has been pointed out that the pH of sludge, etc. during the solidification process becomes 12 or more, and that the pH must be adjusted to around neutrality in order to be disposed of, and that it is extremely difficult to adjust the pH.
本願発明は、上記問題点を解決しようとするもので、そ
の目的は、ヘドロ等を効率良く固化し、再利用、又は廃
棄容易な形態にするヘドロ等の改質方法を提供するもの
である。The present invention attempts to solve the above-mentioned problems, and its purpose is to provide a method for reforming sludge, etc., which efficiently solidifies sludge, etc., and converts it into a form that can be easily reused or disposed of.
ｄ、 問題点を解決するための手段
本願発明は、上記問題点を解決しようとするもので、そ
の要旨は天然水溶性高分子物質又はその半合成高分子物
質、凝集性を有する合成水溶性高分子物質又は吸水性樹
脂から選ばれた１種、または２種以上の高分子物質を、
ヘドロ等に添加混合し、次いで２価以上の陽イオンから
成る水酸化物。d. Means for Solving the Problems The present invention attempts to solve the above problems, and its gist is to provide natural water-soluble polymeric substances, semi-synthetic polymeric substances thereof, and synthetic water-soluble polymeric substances with cohesive properties. One or more polymeric substances selected from molecular substances or water-absorbing resins,
A hydroxide consisting of divalent or higher cations that is added and mixed with sludge, etc.
塩化物、硫酸塩、又は硝酸塩から選ばれた１種、又は２
種以上の化合物及び／又は水硬性セメントを混合せしめ
ることを特徴とするヘドロ等の改質方法にある。One or two selected from chloride, sulfate, or nitrate
A method for modifying sludge, etc., characterized by mixing more than one type of compound and/or hydraulic cement.
すなわち、親水性の高い高分子物質自身が、その特徴と
して有する増粘効果、吸水効果、凝集効果等を利用して
ヘドロ等の増粘、凝集、脱水等を行い、次いで２価以上
の陽イオンから成る水酸化物、塩化物、硫酸塩、又は硝
酸塩から選ばれた１種、又は２種以上の化合物及び／又
は水硬性セメント等の固化剤を添加し、適度の固さを持
った固形状物にし、再利用、あるいは廃棄出来る土壌に
するものである。In other words, the highly hydrophilic polymer substance itself thickens, coagulates, dehydrates sludge, etc. by utilizing its characteristic thickening effect, water absorption effect, coagulation effect, etc., and then removes divalent or higher cations. One or more compounds selected from hydroxides, chlorides, sulfates, or nitrates consisting of It turns soil into something that can be recycled, reused, or disposed of.
一般によく知られている天然水溶性高分子物質、又はそ
の半合成高分子物質、凝集性を有する合成水溶性高分子
物質又は吸水性樹脂等は水溶性、増粘性、吸水性、凝集
性等を有する。これらの高分子物質は、チキントロピッ
ク性を有し、含水率の高いヘドロ等に添加混合すると、
ヘドロ等の粒子にこれらの高分子物質が物理的化学的に
吸着し、同時に粒子表面の電荷を中和し、或はヘドロ等
中に含まれる水分を吸収し、ヘドロ等全体を凝集。Generally well-known natural water-soluble polymer substances, semi-synthetic polymer substances thereof, synthetic water-soluble polymer substances with cohesive properties, water-absorbing resins, etc. have water solubility, thickening properties, water absorption properties, cohesive properties, etc. have These polymeric substances have chicken-tropic properties, and when mixed with sludge with a high moisture content,
These polymeric substances physically and chemically adsorb to particles of sludge, etc., and at the same time neutralize the charge on the surface of the particles, or absorb water contained in the sludge, etc., causing the entire sludge to coagulate.
凝結状態に保つ。Keep it in a condensed state.
次いで、この凝集、１）結状態をより効果的に速やかに
達成するために、２価以上の陽イオン化合物を添加し、
凝集、凝結状態をより良いものにし、再利用、又は廃棄
容易な状態に改質する。Next, in order to achieve this aggregation more effectively and quickly, 1) a divalent or higher cationic compound is added;
Improve the flocculation and coagulation state to make it easier to reuse or dispose of.
しかし、この高分子物質と２価以上の陽イオン化合物の
添加は、同時に行っても、上記の効果は同様に得られる
。However, even if the polymer substance and the divalent or higher cationic compound are added at the same time, the above effects can be obtained in the same way.
さらに、凝集、＠結状態或は強度などが要求される場合
には、適宜に水硬性セメントを添加混合して、ヘドロ等
の凝集、凝結状態或は強度などをより効果的に向上せし
めるものである。Furthermore, if agglomeration, coagulation state, strength, etc. are required, hydraulic cement may be appropriately added and mixed to more effectively improve the coagulation, coagulation state, strength, etc. of sludge, etc. be.
この凝集、凝結状態にあるヘドロ等に、水硬性セメント
を添加すると、水硬性セメント粒子がヘドロ等や高分子
物質等と反応、或は物理的吸着などを起こして、ヘドロ
等の全体を凝集、Ｉｋ結状態或は強度などを向上せしめ
るものである。When hydraulic cement is added to the sludge, etc. that is in a coagulated or coagulated state, the hydraulic cement particles react with the sludge, etc. and polymer substances, or cause physical adsorption, causing the entire sludge, etc. to coagulate. This improves the Ik binding state or strength.
上記天然水溶性高分子物質又はその半合成高分子物質と
しては、グアーガム、ローカストビンガム、クインスシ
ードガム、アラビノガラクタンガム、アラビアガム、ト
ラガントガム、′Ｒ粉、ザンサンガム、ザンコート、ゼ
ラチン、サイリュームガム、アルギン酸塩類、カルボキ
シメチルセルロース、カルボキシメチルハイドロオキシ
エチルセルロース等その他これらに類似する天然水溶性
高分子物質又はその半合成高分子物質が用いることがで
きる０次に、凝集性を有する合成水溶性高分子物質とし
ては、ポリビニルアルコール、ポリビニルピロリドン、
ポリビニルメタアクリレート。The above-mentioned natural water-soluble polymer substances or semi-synthetic polymer substances include guar gum, locust Bingham gum, quince seed gum, arabinogalactan gum, gum arabic, gum tragacanth, 'R powder, xanthan gum, xancort, gelatin, sirium gum, alginic acid. Salts, carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, and other similar natural water-soluble polymer substances or their semi-synthetic polymer substances can be used as synthetic water-soluble polymer substances with zero-order flocculation properties. , polyvinyl alcohol, polyvinylpyrrolidone,
Polyvinyl methacrylate.
ポリアクリルアミド、ポリアクリル酸ソーダ、ポリエチ
レンオキサイド、ビーガム等とこれらに類似する合成水
溶性高分子物質が用いることができる。さらに、吸水性
樹脂としては、ポリアクリル酸系、ポリサンカライド系
、又はこれらの共重合体系、イソブチレンと無水マレイ
ン酸共重合体系等の樹脂に代表されるような吸水性樹脂
を用いることができる。Polyacrylamide, sodium polyacrylate, polyethylene oxide, vegum, and similar synthetic water-soluble polymer substances can be used. Further, as the water-absorbing resin, water-absorbing resins typified by polyacrylic acid-based, polysancalide-based, or copolymer-based resins thereof, isobutylene and maleic anhydride copolymer-based resins, etc. can be used. .
これらの高分子物質以外のものでも、水溶性であり、か
つ増粘性、吸水性、凝集性等を有するものであれば、本
発明に効果的に用いることができる。Materials other than these polymeric substances can be effectively used in the present invention as long as they are water-soluble and have thickening properties, water absorption properties, cohesive properties, etc.
これらの高分子物質の添加量の範囲は、ヘドロ等の種類
、ヘドロ等の含水率によって異なるが、特に含水率とは
密接な関係にある。The range of the amount of these polymeric substances added varies depending on the type of sludge and the water content of the sludge, but is particularly closely related to the water content.
ヘドロ等の含水率と高分子物質の添加量の範囲としては
、■含水率２０〜５０％の場合、ヘドロ等１ｄ当りに対
し、高分子物質を０．５〜８ｋｇの範囲で加える。また
■含水率４０〜７０％の場合は、ヘドロ等１ｋｌ当りに
対し、高分子物質を１．０〜１５ｋｇの範囲で加える。The range of the water content of sludge, etc. and the amount of the polymeric substance added is as follows: (1) When the water content is 20-50%, add 0.5-8 kg of the polymeric substance per 1 d of sludge, etc.; (2) When the water content is 40 to 70%, add 1.0 to 15 kg of a polymeric substance per 1 kl of sludge, etc.
■含水率６０〜８０％の場合は、ヘドロ等１ｋｌ当りに
対し、高分子物質を５〜２５ｋｇの範囲で加え、■含水
率８０％以上の場合は、ヘドロ等ｌＨ当りに対し、高分
宇物質を２０ｋｇ以上加える。■If the water content is 60 to 80%, add 5 to 25 kg of polymeric material per 1kl of sludge, etc.;■If the water content is 80% or more, add high molecular weight per liter of sludge, etc. Add more than 20 kg of substance.
しかし、含水率が８０％以上となると、高分子物質の使
用量が急激に増大する。However, when the water content exceeds 80%, the amount of polymeric material used increases rapidly.
これらの高分子物質の添加量は、ヘドロ等の種類及び含
水率によって適正値があるため、添加量はあらかじめヘ
ドロ等の含水率を測定し、添加量を確認のうえ使用する
ことが、より効果的である。The amount of these polymeric substances added has an appropriate value depending on the type of sludge, etc. and its water content, so it is best to measure the water content of the sludge, etc. in advance and confirm the amount before use. It is true.
水硬性セメントとしては、普通ポルトランドセメント、
速硬性ポルトランドセメント、高炉セメント、その他の
改良されたポルトランドセメント。Hydraulic cements include ordinary portland cement,
Fast-setting Portland cement, blast furnace cement and other improved Portland cements.
アルミナセメント、カルシウムセメント、フライアッシ
ュやポゾランを含有するセメント類等を用いることがで
きる。Alumina cement, calcium cement, cements containing fly ash or pozzolan, etc. can be used.
これらの水硬性セメントの添加量は、使用した高分子物
質の添加量にもよるが、ヘドロ等の含水率に影響される
。この水硬性セメントは、ヘドロ等ｌｋｌ当りに対し、
１０〜１００ｋｇの範囲にある。また、この水硬性セメ
ントの添加量については、ヘドロ等の種類及びヘドロ等
の含水率により、適正の範囲があるので、予めこれらを
確認するこ・とが、効果的に水硬性セメントを使用する
ために必要である。The amount of these hydraulic cements added depends on the amount of the polymeric substance used and is influenced by the water content of sludge and the like. This hydraulic cement has a
It is in the range of 10-100 kg. Also, regarding the amount of hydraulic cement added, there is an appropriate range depending on the type of sludge, etc. and the water content of the sludge, etc., so confirming these in advance is the best way to use hydraulic cement effectively. It is necessary for
２価以上の陽イオンからなる化合物としては、周期律表
Ｉ［ａ、Ｉ［ｂ、ＩＩＩａ、［［［ｂ、ＩＶｂ、Ｖｂ、
Ｖｌｂ、■ｂ或は■族から選ばれた元素の水酸化物、塩
化物、硫酸塩、硝酸塩のうち水に易溶性或は難溶性のも
ので、例えば、マグネシウム、カルシウム、アルミニウ
ム等の水酸化物、マグネシウム、カルシウム、バリウム
、アルミニウム、ジルコニウム、クロム。Compounds consisting of divalent or higher cations include those in the periodic table I[a, I[b, IIIa, [[[b, IVb, Vb,
Among the hydroxides, chlorides, sulfates, and nitrates of elements selected from the Vlb, ■b, or ■ groups, those that are easily or poorly soluble in water, such as hydroxides of magnesium, calcium, aluminum, etc. substances, magnesium, calcium, barium, aluminum, zirconium, and chromium.
マンガン等の塩化物、硫酸塩又は硝酸塩である。Chloride, sulfate or nitrate of manganese etc.
そして酸素化合物で陰イオン化する化合物、例えばホウ
酸塩、アルミン酸塩、クロム酸塩１重クロム酸塩、そし
て過マンガン酸塩なども使用可能である。Compounds that anionize with oxygen compounds, such as borates, aluminates, chromates, monobichromates, and permanganates, can also be used.
本発明で処理できるヘドロ等の含水率は２ｏから９０％
のものであるが、含水率２ｏから５０％のものが効果的
に処理できる。The moisture content of sludge, etc. that can be treated with the present invention is from 2o to 90%.
However, those with a moisture content of 2 to 50% can be effectively treated.
ｅ、 実施例 以下本発明を実施例を参照してさらに詳しく説明する。e. Example The present invention will be explained in more detail below with reference to Examples.
〔実施例−１〕
土木工事で発生する軟弱な土砂（含水率２９．３％、シ
ルト及び粘土分６５．３％）をＩＪｌｊにザンサンガム
。[Example-1] Soft earth and sand (moisture content 29.3%, silt and clay content 65.3%) generated during civil engineering work was treated with xanthan gum.
消石灰を加えて混練し、−軸圧縮強度の経時変イビを測
定した。Slaked lime was added and kneaded, and the change in -axial compressive strength over time was measured.
その結果を表−１に示す。The results are shown in Table-1.
〔実施例−２〕
下水道処理より生ずる汚泥スラツジ（含水率４４．４％
）１に１にポリサッカライド系の吸水性樹脂１石こう及
びポルトランドセメントを５０ｋｇを加えて混練し、−
軸圧縮強度の経時変化を測定した。[Example-2] Sludge sludge generated from sewage treatment (water content 44.4%)
) Add 50 kg of polysaccharide-based water absorbent resin 1 gypsum and Portland cement to 1 and knead.
Changes in axial compressive strength over time were measured.
その結果を表−２に示す。The results are shown in Table-2.
〔実施例−３〕
浚渫工事から得られるヘドロ（含水率７０．２％）ｌＩ
ｃ１にグアーガム、塩化カルシウム及びアルミナセメン
トを加えて混練し、−軸圧縮強度の経時変化を測定した
。[Example-3] Sludge obtained from dredging work (water content 70.2%)
Guar gum, calcium chloride and alumina cement were added to c1 and kneaded, and the change in -axial compressive strength over time was measured.
その結果を表−３に示す。The results are shown in Table-3.
ｆ、 発明の効果
本発明によれば、千木工事や浚渫工事等から発生する軟
弱な土砂やヘドロ類、上下水道処理により発生する汚泥
スラッジ及び工場廃水処理により発生するスラッジ等を
効率よく再利用し、廃棄容易な形態にすることができる
。f. Effects of the Invention According to the present invention, soft earth and sand and sludge generated from Chigi construction and dredging work, etc., sludge generated from water and sewage treatment, and sludge generated from factory wastewater treatment can be efficiently reused. and can be made into a form that is easy to dispose of.
特許出願人 株式会社 チルナイト （ほか２名）Patent applicant: Chill Night Co., Ltd. (2 others)
Claims (3)
、凝集性を有する合成水溶性高分子物質又は吸水性樹脂
から選ばれた１種、又は２種以上の高分子物質を、土木
工事や浚渫工事等から発生する軟弱な土砂やヘドロ等、
上下水道処理により発生する汚泥スラグ及び工場廃水処
理により発生するスラッジ等に添加混合し、次いで、２
個以上の陽イオンからなる水酸化物、塩化物、硫酸塩又
は硝酸塩から選ばれた１種、又は２種以上の塩類及び／
又は水硬性セメントを混合せしめることを特徴とする、
土木工事や浚渫工事等から発生する軟弱な土砂やヘドロ
等、上下水道処理により発生する汚泥スラグ及び工場廃
水処理により発生するスラッジ類の改質方法。(1) One or more polymeric substances selected from natural water-soluble polymeric substances, semi-synthetic polymeric substances thereof, synthetic water-soluble polymeric substances with cohesive properties, or water-absorbing resins are applied to civil engineering works. soft earth and sand and sludge generated from dredging work, etc.
It is added to and mixed with sludge generated from water and sewage treatment and sludge generated from factory wastewater treatment, and then 2
One or more salts selected from hydroxides, chlorides, sulfates, and nitrates consisting of one or more cations and/or
or mixed with hydraulic cement,
A method for reforming soft earth and sand and sludge generated from civil engineering work, dredging, etc., sludge generated from water and sewage treatment, and sludge generated from factory wastewater treatment.
IIａ，IIIｂ，IVｂ，Ｖｂ，VIｂ，VIIｂ或はVII族から
選ばれた元素の水酸化物、塩化物、硫酸塩または硝酸塩
から選ばれた１種又は２種以上の塩類である、特許請求
の範囲（１）項記載のスラッジ類の改質方法。(2) Cations with a valence of two or more are IIa, IIb, and I of the periodic table.
The claimed compound is one or more salts selected from hydroxides, chlorides, sulfates or nitrates of elements selected from Group IIa, IIIb, IVb, Vb, VIb, VIIb or VII. A method for modifying sludge as described in scope (1).
ルミナ系セメント、特殊セメント又はこれらとスライア
ッシュ、ポゾラン等を含有した水硬性セメントである、
特許請求の範囲第（１）項記載のスラッジ類の改質方法
。(3) The hydraulic cement is a Portland cement, an alumina cement, a special cement, or a hydraulic cement containing these and sly ash, pozzolan, etc.
A method for reforming sludge according to claim (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29830887A JPH01139198A (en) | 1987-11-26 | 1987-11-26 | Method for reforming sludge or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29830887A JPH01139198A (en) | 1987-11-26 | 1987-11-26 | Method for reforming sludge or the like |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01139198A true JPH01139198A (en) | 1989-05-31 |
| JPH0442080B2 JPH0442080B2 (en) | 1992-07-10 |
Family
ID=17857963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29830887A Granted JPH01139198A (en) | 1987-11-26 | 1987-11-26 | Method for reforming sludge or the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01139198A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02194891A (en) * | 1989-01-24 | 1990-08-01 | Kyoritsu Yuki Co Ltd | Treatment of water containing surplus excavation soil |
| US5391597A (en) * | 1993-10-04 | 1995-02-21 | Cytec Technology Corp. | Composition and process for increasing the shear strength of processing wastes used for tip building and underground consolidation |
| JP2000109831A (en) * | 1998-10-01 | 2000-04-18 | Ube Ind Ltd | Solidifying material for moisture-containing soil and improvement of solidification of moisture-containing soil |
| JP2000109832A (en) * | 1998-10-01 | 2000-04-18 | Ube Ind Ltd | Solidifying material for moisture-containing soil and improvement of solidification of moisture-containing soil |
| JP2001121159A (en) * | 1999-10-29 | 2001-05-08 | Terunaito:Kk | Treatment method for boring waste muddy water |
| JP2004339377A (en) * | 2003-05-16 | 2004-12-02 | Es Techno:Kk | Polymer solidification agent |
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| JPS5230777A (en) * | 1975-09-04 | 1977-03-08 | Ebara Infilco Co Ltd | Method for concentrating organic sludge |
| JPS55102677A (en) * | 1979-01-29 | 1980-08-06 | Chiyoda Chem Eng & Constr Co Ltd | Improvement in strength of hydrous soft ground |
| JPS5658599A (en) * | 1979-10-17 | 1981-05-21 | Agency Of Ind Science & Technol | Treatment of muddy water discharged from construction work or the like |
| JPS5658598A (en) * | 1979-10-17 | 1981-05-21 | Agency Of Ind Science & Technol | Treatment of muddy water |
| JPS5676293A (en) * | 1979-11-28 | 1981-06-23 | Norihiko Base | Application of high polymer flocculant |
| JPS56100920A (en) * | 1980-01-18 | 1981-08-13 | Chiyoda Chem Eng & Constr Co Ltd | Improvement of water content poorsoil |
| JPS57121086A (en) * | 1981-01-21 | 1982-07-28 | Tokyo Gas Co Ltd | Treatment for regenerating excavated soil |
| JPS57174523A (en) * | 1981-04-22 | 1982-10-27 | Chiyoda Chem Eng & Constr Co Ltd | Increase of strength of wet soft soil |
| JPS58187485A (en) * | 1982-04-28 | 1983-11-01 | Kajima Corp | Method for improving earth and sand |
| JPS5992099A (en) * | 1982-11-18 | 1984-05-28 | Kurita Water Ind Ltd | Dehydration of sludge |
| JPS6087813A (en) * | 1983-10-19 | 1985-05-17 | Toagosei Chem Ind Co Ltd | Coagulating, settling and solidifying agent |
| JPS61227899A (en) * | 1985-04-02 | 1986-10-09 | Toshihiro Ijichi | Treatment of waste earth |
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1987
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Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4984961A (en) * | 1972-10-26 | 1974-08-15 | ||
| JPS4981273A (en) * | 1972-12-13 | 1974-08-06 | ||
| JPS5230777A (en) * | 1975-09-04 | 1977-03-08 | Ebara Infilco Co Ltd | Method for concentrating organic sludge |
| JPS55102677A (en) * | 1979-01-29 | 1980-08-06 | Chiyoda Chem Eng & Constr Co Ltd | Improvement in strength of hydrous soft ground |
| JPS5658599A (en) * | 1979-10-17 | 1981-05-21 | Agency Of Ind Science & Technol | Treatment of muddy water discharged from construction work or the like |
| JPS5658598A (en) * | 1979-10-17 | 1981-05-21 | Agency Of Ind Science & Technol | Treatment of muddy water |
| JPS5676293A (en) * | 1979-11-28 | 1981-06-23 | Norihiko Base | Application of high polymer flocculant |
| JPS56100920A (en) * | 1980-01-18 | 1981-08-13 | Chiyoda Chem Eng & Constr Co Ltd | Improvement of water content poorsoil |
| JPS57121086A (en) * | 1981-01-21 | 1982-07-28 | Tokyo Gas Co Ltd | Treatment for regenerating excavated soil |
| JPS57174523A (en) * | 1981-04-22 | 1982-10-27 | Chiyoda Chem Eng & Constr Co Ltd | Increase of strength of wet soft soil |
| JPS58187485A (en) * | 1982-04-28 | 1983-11-01 | Kajima Corp | Method for improving earth and sand |
| JPS5992099A (en) * | 1982-11-18 | 1984-05-28 | Kurita Water Ind Ltd | Dehydration of sludge |
| JPS6087813A (en) * | 1983-10-19 | 1985-05-17 | Toagosei Chem Ind Co Ltd | Coagulating, settling and solidifying agent |
| JPS61227899A (en) * | 1985-04-02 | 1986-10-09 | Toshihiro Ijichi | Treatment of waste earth |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02194891A (en) * | 1989-01-24 | 1990-08-01 | Kyoritsu Yuki Co Ltd | Treatment of water containing surplus excavation soil |
| US5391597A (en) * | 1993-10-04 | 1995-02-21 | Cytec Technology Corp. | Composition and process for increasing the shear strength of processing wastes used for tip building and underground consolidation |
| JP2000109831A (en) * | 1998-10-01 | 2000-04-18 | Ube Ind Ltd | Solidifying material for moisture-containing soil and improvement of solidification of moisture-containing soil |
| JP2000109832A (en) * | 1998-10-01 | 2000-04-18 | Ube Ind Ltd | Solidifying material for moisture-containing soil and improvement of solidification of moisture-containing soil |
| JP2001121159A (en) * | 1999-10-29 | 2001-05-08 | Terunaito:Kk | Treatment method for boring waste muddy water |
| JP2004339377A (en) * | 2003-05-16 | 2004-12-02 | Es Techno:Kk | Polymer solidification agent |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442080B2 (en) | 1992-07-10 |
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