JPS61204100A - Dehydrating method for sludge - Google Patents
Dehydrating method for sludgeInfo
- Publication number
- JPS61204100A JPS61204100A JP60044607A JP4460785A JPS61204100A JP S61204100 A JPS61204100 A JP S61204100A JP 60044607 A JP60044607 A JP 60044607A JP 4460785 A JP4460785 A JP 4460785A JP S61204100 A JPS61204100 A JP S61204100A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- salt
- polymer flocculant
- organic
- org
- 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.)
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- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】 「発明の目的」 @産業上の利用分野。[Detailed description of the invention] "Purpose of invention" @Industrial application field.
本発明は上下水道、産業廃水、し尿などの処理において
生じた有機性汚泥、特に微生物を含み脱水し難い性状の
有機性汚泥の効率的な脱水方法に関するものである。The present invention relates to an efficient method for dewatering organic sludge generated in the treatment of water and sewage systems, industrial wastewater, human waste, etc., particularly organic sludge that contains microorganisms and is difficult to dehydrate.
1従来の技術。1 Conventional technology.
上記のような有機性汚泥を処理するのに従来は一般に有
機高分子#巣剤のみを汚泥に770える方法が行なわれ
、特に微生物を含む有機性汚泥にはカチオン高分子凝集
剤が用いられる場合が多く、更にはこれと反対の電荷を
持つアニオン高分子凝集剤を併用する方法がよく行なわ
れてい友。かかる方法#′ilれた汚泥凝集効果があり
、大きなフロックを形成させることができるが、反面、
高分子凝集剤が付着した汚泥は親水性となるため、汚泥
の含水率を大巾に低下させることはできず、卯圧濾過、
真空Pi!i、ベルトプレスー過等の炉布を使用する脱
水方法で脱水処理する場合には汚泥に′ip布からの剥
離性が悪く、且つ脱水効率を低下させる。すなわち有機
高分子凝集剤は主として架橋吸着によって汚泥に結合す
るから、たとえカチオン高分子凝集剤と、それと反対の
電荷を持つアニオン高分子凝集剤を併用して糸状の凝固
物質を作っても、汚泥の表面の改質を積極的に行なうこ
とが出来なかつ友。このような場合に汚泥の脱水性を向
上させるため汚泥に珪藻土や粘土等の無機脱水助剤。Conventionally, to treat organic sludge as described above, a method was generally used in which only an organic polymer nesting agent was added to the sludge, and in particular, when a cationic polymer flocculant was used for organic sludge containing microorganisms. Furthermore, it is common practice to use an anionic polymer flocculant with the opposite charge. This method has a good sludge flocculation effect and can form large flocs, but on the other hand,
Because sludge with polymer flocculant attached becomes hydrophilic, it is not possible to significantly reduce the water content of sludge;
Vacuum Pi! i. When dewatering is performed by a dewatering method using a furnace cloth such as belt press filtration, the sludge has poor releasability from the IP cloth and reduces dewatering efficiency. In other words, organic polymer flocculants bind to sludge mainly through crosslinking adsorption, so even if a cationic polymer flocculant and an anionic polymer flocculant with the opposite charge are used together to create a filamentous coagulated substance, the sludge It is difficult to actively modify the surface of the metal. In such cases, inorganic dewatering aids such as diatomaceous earth or clay are added to the sludge to improve its dewatering properties.
消石灰、塩化鉄等の無機凝集剤を加えたり、これらの高
分子凝集剤を併用して脱水処理する方法が一般に行なわ
れていた。併し、これらの無機脱水助剤や無機凝集剤は
汚泥固形分に対して10〜100重量俤と多量を添加す
る必要があり、このうちほぼ全量が処理後のクー中の一
部となるので全ケーキの重量及び体積が増加し、且つこ
のケーキの燃焼性は著しく悪いため焼却費が1大となり
、また汚泥の処理装置や焼却装置の腐食やスケールの蓄
漬が起る等好ましくない点が多かった。一方力チオン界
面活性剤を単独で原えることも行なわれたが、カチオン
界面活性剤は汚泥粒子の表面に付着している結合水を分
離し、脱水し易い状態にするので脱水性は良好であるが
凝集性に劣るため汚泥のフロックは大きくは成長せず、
細かいフロックとなり、濃縮性が著しく低い汚泥が脱水
装置に入れられ、那圧等の手段により脱水されるので脱
水効率は必ずしも良くなかった。又汚泥と反応しなかっ
た余剰のカチオン界面活性剤は遊離した状態で廃水処理
系統に流れ込むので処理機構に悪影響を及ぼし、特に活
性汚泥処理のような生物処理の場合には生物が激減した
り、死滅したりすることもある等の欠点があった。Generally, dehydration treatment is carried out by adding an inorganic flocculant such as slaked lime or iron chloride, or by using a combination of these polymer flocculants. However, these inorganic dehydration aids and inorganic flocculants need to be added in large amounts, 10 to 100 weight units per sludge solid content, and almost all of this becomes part of the coolant after treatment. The weight and volume of the whole cake increases, and the combustibility of this cake is extremely poor, which increases the incineration cost. In addition, there are undesirable problems such as corrosion of sludge treatment equipment and incineration equipment, and accumulation of scale. There were many. On the other hand, cationic surfactants have been used alone, but cationic surfactants separate bound water adhering to the surface of sludge particles, making them easier to dehydrate, so they have good dewatering properties. However, sludge flocs do not grow large due to poor cohesiveness.
The sludge, which forms fine flocs and has extremely low thickening properties, is put into a dewatering device and dehydrated by means such as natural pressure, so the dewatering efficiency was not necessarily good. In addition, excess cationic surfactant that has not reacted with the sludge flows into the wastewater treatment system in a free state, which has a negative impact on the treatment mechanism, and especially in the case of biological treatment such as activated sludge treatment, living organisms may be drastically reduced. There were drawbacks such as the possibility of death.
本発明の目的は上記のような欠点を解消する効率的な汚
泥の脱水方法を提供することKある。An object of the present invention is to provide an efficient sludge dewatering method that eliminates the above-mentioned drawbacks.
「発明の構成」 1問題点を解決するための手段。"Structure of the invention" 1. A means to solve a problem.
本発明者らは鋭意研究の結果、以下述べるように前記の
諸欠点を解消した効率的な汚泥の股木発明は有機性汚泥
を凝集剤で処理し、脱水する方法において、アル牛ルア
ミン塩、アル千ル第4級アンモニウム塩、アルキルイソ
キノリウム塩、アルキルピコリニウム塩、アルキルピリ
ジニウム塩、アルキルイミダゾリニウム塩、アルキルジ
メチルベンジルアンモニウム塩、アル牛ルアミドメチル
ピリジニウム塩、アルキルオキシメチルピリジニウム塩
、ポリオキシエチレンアル牟ルアミンの如きカチオン界
面活性剤の1種又は複数種と、植物性高分子粘質物、動
物性蛋白、澱粉及びセルロースの如き天然高分子物質の
アニオン変性物と、有機高分子凝集剤とを汚泥に添加し
て処理し、カチオン界面活性剤の浸れた脱水性と、これ
と逆性のイオンを持ち中和及び凝固物質の生成にあずか
る天然高分子物質のアニオン変性物の特性と、有機高分
子凝集剤の強い凝集性とを巧みに組み合せて含水率が少
なく疎水性の大きな汚泥のフロックを形成し、著しく良
好な脱水効率をもたらす汚泥の有機性汚泥粒子、轡に微
生物を含む有機性汚泥粒子は一般に負に帯電しており、
且つ、汚泥粒子表面には微生物より発生する親水性コロ
1ド状粘禰物質が存在し、この粘稠物質には水の分子が
強固に結合していて極めて脱水し難いが上記の如きカチ
オン界面活性剤の1種又は複数棟が反応すると、その疎
水基を結合水に向けて配向して結合水を分離駆逐し、汚
泥粒子を含めて疎水基同士が結合して汚泥粒子間は緻密
な骨格11i造で結合し、凝集して脱水し易い70ツク
が形成されるが、細かくて濃縮性に欠けていて脱水効率
が必ずしもよ(ないものであり、又正に帯電している。As a result of intensive research, the inventors of the present invention have developed an efficient sludge crossbar that eliminates the above-mentioned drawbacks as described below.In a method for treating organic sludge with a flocculant and dewatering it, the present inventors have developed a method for treating organic sludge with a flocculant and dewatering it. Alkyl quaternary ammonium salt, alkylisoquinolium salt, alkylpicolinium salt, alkylpyridinium salt, alkylimidazolinium salt, alkyldimethylbenzylammonium salt, alkylamidomethylpyridinium salt, alkyloxymethylpyridinium salt, One or more cationic surfactants such as polyoxyethylene almulamine, anionic modified products of natural polymer substances such as vegetable polymer mucilage, animal protein, starch and cellulose, and organic polymer aggregates. The dewatering properties of cationic surfactants and the properties of anion-modified natural polymers that have opposite ions and participate in neutralization and production of coagulation substances , by skillfully combining the strong flocculating properties of organic polymer flocculants to form sludge flocs with low water content and large hydrophobicity, resulting in extremely good dewatering efficiency, organic sludge particles, and microorganisms in the sludge. Organic sludge particles are generally negatively charged;
In addition, there is a hydrophilic colloid-like viscous substance generated by microorganisms on the surface of the sludge particles, and water molecules are tightly bound to this viscous substance, making it extremely difficult to dehydrate. When one or more activators react, their hydrophobic groups are oriented toward the bound water, separating and expelling the bound water, and the hydrophobic groups, including those in the sludge particles, bond to each other, forming a dense skeleton between the sludge particles. The 11i structure combines and aggregates to form 70 pieces that are easy to dehydrate, but they are fine and lack condensation, so the dehydration efficiency is not necessarily good, and they are positively charged.
これに天然高分子物質のアニオン変性物が反応して中和
すると共に凝固物質が生成し、汚泥の表面に付着して汚
泥は改質し、更に高分子凝集剤が反応して強力な凝集が
進行し、汚泥のフロックは大きく成長し、且つ固くな9
極めて脱水し易いものとなる。有機性汚泥に高分子凝集
剤を先に加えて汚泥粒子を凝集させ、その筐まの状態か
又はスクリーン等で濃縮してからカチオン界面活性剤及
び天然高分子物質のアニオン変性物を添刀口して処理し
てもよく、この場合生成するフロックは前者に比し、同
一条件下で形状がやや大きく、硬さがやや軟かくなる傾
向がある。高分子l#集剤としては、カチオン界面活性
剤及び天然高分子物質のアニオン変性物を先に7J[l
える場合は汚泥は概して中和しているので、次に7JO
える高分子凝集剤はアニオン系でもカチオン系でも両者
の併用でもノニオン系でも支障はないが、上記の如き有
慢性汚泥は構成が複雑で性状が不安定であるからカチオ
ン界面活性剤と天然高分子物質のアニオン変性物を加え
た後の汚泥の性状にエリ高分子凝集剤を選択するのがよ
い。高分子凝集剤を先に加える場合は有機性汚泥は概し
て負に帯電しているのでカチオン高分子凝集剤が適合す
る場合が多いが、添加直前の汚泥の性状に応じて適宜選
択するのが好ましい。然しこれK III約されるもの
でない。更にカチオン界面活性剤と有機性高分子凝集剤
を同時(添加することもできる。この場合は処理操作が
複雑で、生成するフロックがやや不安定となる傾向があ
る。The anion-modified natural polymer reacts with this, neutralizing it and producing a coagulated substance, which adheres to the surface of the sludge and modifies the sludge. Furthermore, the polymer flocculant reacts with it and causes strong flocculation. As the progress progresses, the sludge flocs grow larger and become harder.
It becomes extremely easy to dehydrate. A polymer flocculant is first added to organic sludge to flocculate the sludge particles, and the sludge particles are concentrated in a casing or on a screen, and then a cationic surfactant and an anion modified natural polymer substance are added. The flocs produced in this case tend to have a slightly larger shape and a slightly softer hardness than the former under the same conditions. As a polymer l# aggregator, a cationic surfactant and an anion modified product of a natural polymer substance are first added to 7J
If the sludge is generally neutralized, then 7JO
There is no problem in using anionic or cationic polymer flocculants, a combination of both, or nonionic polymer flocculants, but chronic sludge as described above has a complex composition and unstable properties, so cationic surfactants and natural polymers are used. Eripolymer flocculants are preferably selected based on the properties of the sludge after adding the anion-modified substance. If a polymer flocculant is added first, a cationic polymer flocculant is often suitable since organic sludge is generally negatively charged, but it is preferable to select an appropriate one depending on the properties of the sludge immediately before addition. . However, this is not guaranteed. Furthermore, it is also possible to add a cationic surfactant and an organic polymer flocculant at the same time. In this case, the processing operation is complicated and the flocs produced tend to be somewhat unstable.
本発明で用いるカチオン界面活性剤は下記の通りである
。The cationic surfactants used in the present invention are as follows.
アルギルアミン塩は一般式(1)で表わされる第1アミ
ンハライド、一般式(2)で表わされる第2アミ/ハラ
イド、一般式(暖で表わされる第3アミンハライドのそ
れぞれの単体又は混合物である。The argylamine salt is a primary amine halide represented by the general formula (1), a secondary amine halide represented by the general formula (2), and a tertiary amine halide represented by the general formula (warm), each singly or as a mixture.
一般式<11−・−(R−NH,)”!−一般式(2)
−−(’H’、 > NH2)” x−アルキル第4
級アンモニウム塩は一般式(4)で表わされる第4級ア
ンモニウムハライドノ単体又は混合物である。 ゛
アルキルイソキノリウム塩は一般式(5)で表わされる
アJ%/xFルイソキノリウムハライドの単体又は混合
物である。General formula <11-・-(R-NH,)"!-General formula (2)
--('H', >NH2)" x-alkyl 4th
The class ammonium salt is a quaternary ammonium halide represented by the general formula (4) alone or as a mixture. The alkylisoquinolium salt is a single substance or a mixture of aJ%/xF alkylisoquinolium halides represented by the general formula (5).
アルキルビコリニウム塩は一般式(6)で表わされるア
ルギルピコリニウムハライドの単体または混合物である
。The alkyl vicolinium salt is a single substance or a mixture of argylpicolinium halides represented by the general formula (6).
アル牟ルビリジニウム塩は一般式(7)で茨わされるア
ルギルビリジニウムハライドの単体マ友は混合物である
。The algylbyridinium salt is a mixture of the single algylbyridinium halide represented by the general formula (7).
アルキルイミダゾリニウム塩は一般式(8)で表わされ
るアルキルイミダゾリニウムハライドの単体または混合
物である。The alkylimidazolinium salt is a single substance or a mixture of alkylimidazolinium halides represented by the general formula (8).
アルキルジメチルベンジルアンモニウム塩バ一般式(9
)で表わされるアルキルジメチルベンジルアンモニウム
ノ・ライドの単体又は混合物である。Alkyldimethylbenzylammonium salt B general formula (9
) is a single substance or a mixture of alkyldimethylbenzylammonium oxides represented by:
アルキルアミドメチルピリジニウム塩は一般式(1)で
表わされるアルキルアミドメチルピリジニウムハライド
の単体又は混合物である。The alkylamidomethylpyridinium salt is a single substance or a mixture of alkylamidomethylpyridinium halides represented by the general formula (1).
アルキルオキシメチルピリジニウム塩は一般式(11)
で表わされるアルキルオ中ジメチルピリジニウムハライ
ドの単体又は混合物である。The alkyloxymethylpyridinium salt has the general formula (11)
It is a single substance or a mixture of dimethylpyridinium halides in an alkyl group represented by:
ポリオキシエチレンアルキルアミンは一般式(121で
表わされるWR造のものの単体又は混合物である。Polyoxyethylene alkylamine is a single substance or a mixture of WR compounds represented by the general formula (121).
上記の一般式(1)〜(12) においてR−R4はア
ルキル基を表わし、アルキル基は直鎖でも分枝鎖でもよ
く、メチル基、エチル基、プロピル基、ブチル基、ペン
チル基、ヘキシル基、ヘプチル基。In the above general formulas (1) to (12), R-R4 represents an alkyl group, and the alkyl group may be a straight chain or a branched chain, and the alkyl group may be a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, or a hexyl group. , heptyl group.
オクチル基、ノニル基、デシル基、ウンデシル基、ドデ
シル基、トリデシル基、テトラデシル基、ペンタデシル
基、ヘキサデシル基、ヘプタデシル基、オクタデシル基
など炭素原子数1〜18のものが適するが動植物油から
生ずる混合アルキル基例えばヤシアルギル基でもよい。Mixed alkyls derived from animal and vegetable oils, including those having 1 to 18 carbon atoms, such as octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, etc. The group may be, for example, a coconut argyl group.
又は弗素、塩素、臭素、沃素等のハロゲン原子を表わす
。Or represents a halogen atom such as fluorine, chlorine, bromine, iodine, etc.
カチオン界面活性剤を使用する除の形状は液状ペースト
状、粉末状があり、このうち液状のものが使用し易いの
で主として用いられる。The cationic surfactant can be used in the form of a liquid paste or a powder, and among these, the liquid form is mainly used because it is easier to use.
溶液は水溶液とするのが好ましいが水に不溶のものは水
溶性有機溶剤例えばアルコール類で溶解する。The solution is preferably an aqueous solution, but those that are insoluble in water can be dissolved with a water-soluble organic solvent such as alcohol.
本発明に用いる天然高分子物質のアニオン変性物として
は下記の如きものである。Examples of anion-modified natural polymer substances used in the present invention are as follows.
天然高分子物質、及びこれ等よりなる半合成高分子物質
又はこれらの誘導体でアニオン変性物となしたものでア
ニオン性基としてはカルボ# シA、 基(−000E
t)、スル* y if、 (−803H)、硫酸エス
テル基(−0805H)、燐酸エステル基(−0PO(
oH)2)及びこれらの金属塩が適し、天然高分子物質
としてFi澱粉、海藻、植物粘質物(アラビアゴム、ト
ラガンゴム、トロロアロイー、餉n)動物性蛋白(カゼ
イン、ゼラチン、卵白、血漿蛋白)、醗酵粘質(プルラ
ン、デキストラ/)があり、半合成高分子物質としては
澱粉質(可溶性澱粉、カルボキシ澱粉、プリティッシュ
ゴム、ジアルデヒド澱粉、テキストリン)。Natural polymeric substances, semi-synthetic polymeric substances made of these, or derivatives thereof are anionically modified products, and the anionic groups include carboxy A, group (-000E
t), sul * y if, (-803H), sulfate ester group (-0805H), phosphate ester group (-0PO(
oH) 2) and their metal salts are suitable, and natural polymeric substances include Fi starch, seaweed, plant mucilage (gum arabic, gum tragancoa, troloaloy, soybean), animal protein (casein, gelatin, egg white, plasma protein), There are fermented mucilages (pullulan, dextra/), and starchy semi-synthetic polymer substances (soluble starch, carboxy starch, pritish gum, dialdehyde starch, textrin).
セルロース(ビスコース、メチルセルロ、−ス、エチル
セルロース、カルボキシセルロース、ヒドロキシエチル
セルロース)がある。There are celluloses (viscose, methylcellulose, ethylcellulose, carboxycellulose, hydroxyethylcellulose).
本発明に用いる有機高分子凝集剤は、アニオン凝集剤と
してはアクリル酸重合物金属塩、アクリルアミドアクリ
ル酸共重合物、アクリルア)1−−顛ム加ルム留珈 ゼ
11テ〃11ル丁ミド1の部分スルホメチル化物、アク
リルアミド・プロパンスルホン酸ナトリウム共重合物等
であり、カチオン高分子凝集剤としてはメタクリル酸N
−111−ジアルキルアミノアルキルエステル−アクリ
ルアミド共重合物、ポリメタクリル酸ジアルキルアミノ
アルキルエステル、ポリメタクリル酸トリアルキルアン
モニオエチル塩、ポリメタクリル酸シアルキルモノベン
ジルアンモニオエチル塩でアルキル基の炭素原子数が1
〜3の本の等であり、ノニオン高分子凝集剤としてはノ
ニオン系ポリアクリルアミド、ポリエチレンオキサイド
、ポリビニルアルコール等である。The organic molecular coach used in the present invention is an anion agent, as an anion agent, acrylic acid hypertrophy metal salt, acrylic amide acrylic co -polymer, acrylua) 1- methacrylic acid N as a cationic polymer flocculant.
-111-Dialkylaminoalkyl ester-acrylamide copolymer, polymethacrylic acid dialkylaminoalkyl ester, polymethacrylic acid trialkylammonioethyl salt, polymethacrylic acid sialkyl monobenzyl ammonioethyl salt, and the number of carbon atoms in the alkyl group is 1
Examples of nonionic polymer flocculants include nonionic polyacrylamide, polyethylene oxide, and polyvinyl alcohol.
1作用。1 action.
1損性汚泥にカチオン界面活性剤を加えるとカチオン界
面活性剤はその疎水基が汚泥の表面にあるコロイド状粘
稠物質の結合水を排斥し追い出して汚泥の固相に向き親
水基が液相に向いて汚泥粒子に結合し、汚泥は凝集して
脱水し易い状態となり、正に帯電する。これに天然高分
子物質のアニオン変性物が反応して中和すると共に凝固
物が生成して汚泥の表面に付着する。When a cationic surfactant is added to one-loss sludge, the hydrophobic groups of the cationic surfactant reject and expel the bound water of the colloidal viscous substance on the surface of the sludge, and the hydrophilic groups move toward the solid phase of the sludge, and the hydrophilic groups move into the liquid phase. The sludge binds to the sludge particles, causing the sludge to coagulate, become easily dehydrated, and become positively charged. The anion-modified natural polymer reacts with this and neutralizes it, and a coagulated product is formed and adheres to the surface of the sludge.
然し汚泥粒子は筐だ細かい。更に有機高分子凝集剤を添
那すると、これと反応し、細かい汚泥粒子は容易に集合
して粒子群とな9Sこれが先に生じた中和凝固物を含め
て有機高分子凝集剤の#巣作用により大#(て固いフロ
ックとなり。However, the sludge particles are very fine. Furthermore, when an organic polymer flocculant is added, it reacts with the organic polymer flocculant, and the fine sludge particles easily aggregate to form a particle group. Due to the action, it becomes a large and hard flock.
このものはつぶれに〈〈且つ結合水は分離しているので
容易に■圧脱水される。有機高分子凝集剤を先に加える
場合は汚泥粒子は先ず強力に#巣作用を受けて大きなフ
ロックとなり、次いでカチオン界面活性剤の作用を受け
て結合水が分離され、更に天然高分子物質のアニオン変
性物により中和され、且つ生成した凝固物が汚泥の表面
に付着する。この場合、フロックは大゛きくなるが凝集
した粒子群内に結合水が若干残る場合もある。Since this material is crushed and the bound water is separated, it is easily dehydrated under pressure. When an organic polymer flocculant is added first, the sludge particles are first subjected to strong #nesting action to form large flocs, then bound water is separated by the action of the cationic surfactant, and further anions of the natural polymer substance are added. The denatured product is neutralized and the generated coagulated material adheres to the surface of the sludge. In this case, the flocs become larger, but some bound water may remain in the aggregated particles.
「発明の効果」
上記のように本発明の汚泥の脱水方法は表面にコロイド
状物質が付着して−て脱水しくくい有機性汚泥をカチオ
ン界面活性剤によってコロイド状物質の結合水を分離し
、追い出し、天然高分子物質のアニオン変性物で中和し
、且つ凝固物を表面に付着させて脱水し易い状態とし。"Effects of the Invention" As described above, the sludge dewatering method of the present invention uses a cationic surfactant to separate the bound water of colloidal substances from organic sludge, which is difficult to dewater due to colloidal substances attached to the surface. It is expelled, neutralized with an anion-modified natural polymer substance, and the coagulated material is attached to the surface to make it easy to dehydrate.
これを有機高分子凝集剤によって凝集し大きくて固い7
0ツクを形成させて加圧等により脱水する方法であるか
ら脱水効率が極めてよく脱水しくくい性状の有機性汚泥
でも良好に脱水して含水率の少ないケーキを得ることが
でき、F布を使用して脱水する場合には汚泥が炉布の織
目から漏れたり、目を塞ぐことがなく、又カチオン界面
活性剤は中和され且つ反応して凝固物を生成するので遊
離した状態で廃水処理系統に流入することはなく、従っ
て処理機構を乱すことはなr等優れた効果がある。This is coagulated using an organic polymer flocculant to make it large and hard.
Since it is a method of forming a 0-piece and dewatering by applying pressure, etc., the dewatering efficiency is extremely high, and even organic sludge, which is difficult to dehydrate, can be dehydrated well and a cake with a low water content can be obtained, and F cloth is used. When dewatering the sludge, the sludge does not leak or block the weave of the furnace cloth, and the cationic surfactant is neutralized and reacts to form a coagulate, so wastewater can be treated in a free state. It does not flow into the system, therefore it does not disturb the processing mechanism and has excellent effects.
実施例1
B市し尿処理場で発生する低希釈二段曝気余剰汚泥(固
定分濃度2.4%PH6,5)を先ずカチオン界面活性
剤であるヤシアルキルジメチルアきン塩酸塩を加えて、
汚泥粒子表面のコロイド状物質よりその結合水を分離し
、久に天然高分子物質のアニオン変性物であるアルギン
酸ソーダ、ジカルボン酸澱粉及びカルボキシメチルセル
ロースをおのおの別々に加えて中和し、反応させ、最後
にカチオン高分子凝集剤であるポリメタクリル酸ジアミ
ノアルキルエステルを加えテ凝集し、この凝集汚泥をベ
ルトプレス脱水機で脱水して第1表の結果を得た。Example 1 Low-diluted two-stage aerated surplus sludge (fixed content concentration 2.4% PH6.5) generated at the human waste treatment plant in City B was first treated with coconut alkyldimethylaquine hydrochloride, which is a cationic surfactant.
The bound water is separated from the colloidal substances on the surface of the sludge particles, and then sodium alginate, dicarboxylic acid starch, and carboxymethyl cellulose, which are anion-modified natural polymer substances, are added separately to neutralize, react, and finally Polymethacrylic acid diaminoalkyl ester, which is a cationic polymer flocculant, was added to the sludge to cause flocculation, and the flocculated sludge was dehydrated using a belt press dehydrator to obtain the results shown in Table 1.
比較の大め、従来の方法の高分子凝集剤だけを加える方
法、天然高分子物質のアニオン変性物とカチオン高分子
凝集剤を併用した方法、及びカチオン界面活性剤だけを
添加し走力法の処理結果を示す。The comparisons are larger: the conventional method in which only a polymer flocculant is added, the method in which an anionic modified natural polymer substance and a cationic polymer flocculant are used in combination, and the running method in which only a cationic surfactant is added. Shows the processing results.
第1表から明らかなように本願発明の汚泥の脱水方法は
従来の方法に比べ脱水性、処理能力、ケーキ剥離性とも
に優れている。As is clear from Table 1, the sludge dewatering method of the present invention is superior to conventional methods in terms of dewatering performance, treatment capacity, and cake removal performance.
実施例2
に市食肉処理場で発生する活性余剰汚泥(固形分濃度1
.6%P!46.0 ) K先ずカチオン高分子凝集剤
であるメタクリル酸N−1?’ジアルキルアミノアルキ
ルエステル・アクリルアミド共重合物を第2表の割合で
加えてフロックを形成しスクリーンで濃縮して凝集汚泥
とし、次〈カチオン界面活性剤であるヤシアルキルジメ
チルアミン塩酸塩、ドデシルトリメチルアンモニウムク
ロライド、ポリオキシエチレン牛脂アルキルアミンを別
々にそれぞれ第2表の割合で加えて、汚泥粒子表面のコ
ロイド状物質よりその結合水を分離し、次くおのおのに
アニオン半合成高分子〈質であるカルボギシメチ−ルセ
ルロースヲ加えて中和し凝固物質を生成させ、これをベ
ルトプレス脱水機で脱水して第2表の結果を得た。Example 2 Activated surplus sludge (solid content concentration 1) generated at a municipal slaughterhouse
.. 6%P! 46.0) K First, methacrylic acid N-1, which is a cationic polymer flocculant? 'Dialkylaminoalkyl ester/acrylamide copolymer is added in the proportions shown in Table 2 to form flocs, which are concentrated using a screen to form flocculated sludge. Chloride and polyoxyethylene tallow alkylamine are added separately in the proportions shown in Table 2 to separate the bound water from the colloidal substances on the surface of the sludge particles, and then each is added to the anionic semi-synthetic polymer carboxymethane. Cellulose was added to neutralize the mixture to form a coagulated material, which was dehydrated using a belt press dehydrator to obtain the results shown in Table 2.
比較のため従来法として前記のカチオン高分子凝集剤の
みを添加した方法、これとアニオン高分子凝集剤である
アクリルアミド−アクリル酸共重合物を併用した方法に
よる結果を示す。For comparison, the results of a conventional method in which only the cationic polymer flocculant was added and a method in which this was combined with an anionic polymer flocculant, an acrylamide-acrylic acid copolymer, are shown.
第2表から明らかなように本fm@明の汚泥の脱水方法
は従来の方法より脱水性、処理能力、ケーキ剥離性とも
に優れている。As is clear from Table 2, the present fm@mei sludge dewatering method is superior to the conventional method in terms of dewatering performance, treatment capacity, and cake removal performance.
Claims (6)
いて、アルキルアミン塩、アルキル第4級アンモニウム
塩、アルキルイソキノリウム塩、アルキルピコリニウム
塩、アルキルピリジニウム塩、アルキルイミダゾリニウ
ム塩、アルキルジメチルベンジンアンモニウム塩、アル
キルアミドメチルピリジニウム塩、アルキルオキシメチ
ルピリジニウム塩、ポリオキシエチレンアルキルアミン
の如きカチオン界面活性剤の1種又は複数種と、植物性
高分子粘質物、動物性蛋白、醗酵粘質物、澱粉、セルロ
ースの如き天然高分子物質のアニオン変性物と、有機高
分子凝集剤とを有機性汚泥に添加し、処理することを特
徴とする汚泥の脱水方法。(1) In a method of treating organic sludge with a flocculant and dehydrating it, an alkylamine salt, an alkyl quaternary ammonium salt, an alkylisoquinolium salt, an alkylpicolinium salt, an alkylpyridinium salt, an alkylimidazolinium salt, One or more cationic surfactants such as alkyldimethylbenzine ammonium salts, alkylamidomethylpyridinium salts, alkyloxymethylpyridinium salts, and polyoxyethylenealkylamines, vegetable polymer mucilage, animal protein, fermented viscous 1. A method for dewatering sludge, which comprises adding an anion-modified product of a natural polymer substance such as sludge, starch, or cellulose and an organic polymer flocculant to organic sludge for treatment.
応せしめ、次に天然高分子物質のアニオン変性物を加え
て混合し、更に有機高分子凝集剤を添加し、凝集濃縮せ
しめる特許請求の範囲第(1)項記載の汚泥の脱水方法
。(2) First, a cationic surfactant is added to organic sludge and reacted, then an anion modified natural polymer substance is added and mixed, and an organic polymer flocculant is further added to cause coagulation and concentration. A method for dewatering sludge as described in scope item (1).
特許請求の範囲第(2)項記載の汚泥の脱水方法。(3) The sludge dewatering method according to claim (2), wherein the organic polymer flocculant is a cationic polymer flocculant.
特許請求の範囲第(2)項記載の汚泥の脱水方法。(4) The method for dewatering sludge according to claim (2), wherein the organic polymer flocculant is an anionic polymer flocculant.
濃縮し、次にカチオン界面活性剤を混合し、更に天然高
分子物質のアニオン変性物を添加することを特徴とする
特許請求の範囲第(1)項記載の汚泥の脱水方法。(5) A patent claim characterized in that first an organic polymer flocculant is added to organic sludge for flocculation concentration, then a cationic surfactant is mixed, and an anion modified product of a natural polymer substance is further added. A method for dewatering sludge as described in scope item (1).
特許請求の範囲第(5)項記載の汚泥の脱水方法。(6) The method for dewatering sludge according to claim (5), wherein the organic polymer flocculant is a cationic polymer flocculant.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60044607A JPS61204100A (en) | 1985-03-08 | 1985-03-08 | Dehydrating method for sludge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60044607A JPS61204100A (en) | 1985-03-08 | 1985-03-08 | Dehydrating method for sludge |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61204100A true JPS61204100A (en) | 1986-09-10 |
Family
ID=12696128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60044607A Pending JPS61204100A (en) | 1985-03-08 | 1985-03-08 | Dehydrating method for sludge |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61204100A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007236221A (en) * | 2006-03-06 | 2007-09-20 | Fuji Electric Systems Co Ltd | Method for separation of microorganism |
US7455997B2 (en) | 2002-08-05 | 2008-11-25 | Ciba Specialty Chemicals Water Treatments Ltd | Production of fermentation product |
US7582444B2 (en) | 2002-08-05 | 2009-09-01 | Ciba Specialty Chemicals Water Treatments Ltd. | Use of flocculating agents for separating the solid residue in hydrolysed fermentation substrates |
US8030040B2 (en) | 2002-08-05 | 2011-10-04 | Ciba Specialty Chemicals Water Treatments Ltd. | Production of a fermentation product |
CN115432908A (en) * | 2022-09-15 | 2022-12-06 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4833654A (en) * | 1971-09-02 | 1973-05-11 | ||
JPS5162554A (en) * | 1974-11-28 | 1976-05-31 | Shin Meiwa Ind Co Ltd | Haideisuino datsusuishorihoho |
JPS5230781A (en) * | 1975-09-05 | 1977-03-08 | Ebara Infilco Co Ltd | Treating method of sewage sludge |
JPS567683A (en) * | 1979-06-30 | 1981-01-26 | Nichireki Chem Ind Co Ltd | Treatment of suspension |
JPS57132600A (en) * | 1981-02-10 | 1982-08-16 | Mitsubishi Heavy Ind Ltd | Treatment of sludge |
-
1985
- 1985-03-08 JP JP60044607A patent/JPS61204100A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4833654A (en) * | 1971-09-02 | 1973-05-11 | ||
JPS5162554A (en) * | 1974-11-28 | 1976-05-31 | Shin Meiwa Ind Co Ltd | Haideisuino datsusuishorihoho |
JPS5230781A (en) * | 1975-09-05 | 1977-03-08 | Ebara Infilco Co Ltd | Treating method of sewage sludge |
JPS567683A (en) * | 1979-06-30 | 1981-01-26 | Nichireki Chem Ind Co Ltd | Treatment of suspension |
JPS57132600A (en) * | 1981-02-10 | 1982-08-16 | Mitsubishi Heavy Ind Ltd | Treatment of sludge |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7455997B2 (en) | 2002-08-05 | 2008-11-25 | Ciba Specialty Chemicals Water Treatments Ltd | Production of fermentation product |
US7582444B2 (en) | 2002-08-05 | 2009-09-01 | Ciba Specialty Chemicals Water Treatments Ltd. | Use of flocculating agents for separating the solid residue in hydrolysed fermentation substrates |
US8030040B2 (en) | 2002-08-05 | 2011-10-04 | Ciba Specialty Chemicals Water Treatments Ltd. | Production of a fermentation product |
JP2007236221A (en) * | 2006-03-06 | 2007-09-20 | Fuji Electric Systems Co Ltd | Method for separation of microorganism |
CN115432908A (en) * | 2022-09-15 | 2022-12-06 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
CN115432908B (en) * | 2022-09-15 | 2023-12-26 | 北京尚水清源水处理技术有限公司 | Sludge dewatering agent and preparation method thereof |
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