JPS6082199A - Method and device for dehydrating sludge - Google Patents

Method and device for dehydrating sludge

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Publication number
JPS6082199A
JPS6082199A JP58191290A JP19129083A JPS6082199A JP S6082199 A JPS6082199 A JP S6082199A JP 58191290 A JP58191290 A JP 58191290A JP 19129083 A JP19129083 A JP 19129083A JP S6082199 A JPS6082199 A JP S6082199A
Authority
JP
Japan
Prior art keywords
sludge
dewatering
press
filter press
pressure
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
Application number
JP58191290A
Other languages
Japanese (ja)
Inventor
Terukazu Hirata
平田 照和
Akira Yoshida
章 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ishigaki Mechanical Industry Co Ltd
Original Assignee
Ishigaki Mechanical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ishigaki Mechanical Industry Co Ltd filed Critical Ishigaki Mechanical Industry Co Ltd
Priority to JP58191290A priority Critical patent/JPS6082199A/en
Publication of JPS6082199A publication Critical patent/JPS6082199A/en
Pending legal-status Critical Current

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  • Treatment Of Sludge (AREA)

Abstract

PURPOSE:To form secure flocs and to permit easy dehydration by adding a cationic high polymer flocculating agent to waste water sludge to flocculate and thicken the sludge then forcing the sludge into the hermetic filter chamber of a filter press by a press-fit pump and dehydrating the cake. CONSTITUTION:A cationic high polymer flocculating agent having 10<4>-150X 10<4>mol.wt. is added to waste water sludge such as sewer or the like at 0.5-5% by weight in terms of the dry solid matter in the sludge to flocculate and thicken the sludge. The flocculated sludge is press fitted into the hermetic filter chamber of a filter press by a press-fit pump and is dehydrated. The filter press of, for example, the type in which the hermetic filter chambers 2 formed between many juxtaposed filter plates 1 are opened by each sheet upon completion of filtration and dehydration and the cake is stripped and discharged is used. The sludge is press fitted into the filter press under 3-7kg/cm<2> press-fitting pressure and is then compressed and dehydrated under 10-40kg/cm<2> compressing pressure.

Description

【発明の詳細な説明】 この発明は、下水等のNj泥の脱水方法並びKその脱水
に使用するf2置Qノ改良に関する。従来、上1:ピ下
水等の汚泥を脱水するには、礪械装吋としてeユ、真空
負圧を、1;j用する真空脱水機、多数のロール間VC
燕tJのP山を(]1張して、ロールの加圧力およびr
P fliのり長刀を利用するベルトプレス、P板やf
P枠で以て密封した一過室を形成し、その濾過室にfl
i泥を圧入してF4脱水するフィルタプレス等がよく用
いられている。そして、とルらの脱水機で汚泥を脱水す
る場合には、それぞれの機械の脱水操作に適応するよう
に汚泥を予め処理し、また、過当な濾過(脱水)助剤を
加えている。例えば、真空ドラムに無端状のfP if
fを掛は回わした形式の真空脱水機では、汚泥に、消石
灰や堰比麩を加えて汚泥を凝集し、この汚泥中を前述真
空ドラムを浸M回私して、その周lK凝果汚泥を吸引付
層させて、水分を分離している。然しなから、この真空
脱水機では、ドラムの周回に吸引付層したフロックがド
ラムが水中より出る際に、崩れ潜らないような強固なフ
ロックが必要である。このため、従来の真空脱水機では
、9強固なフロックを作るために凝集剤として、消石灰
及び塩化鉄の無礪凝、11L、剤を硲加しなければなら
ず、特に、消石灰はその添m mが大揺で多るため、脱
水ケーキ基が増大し、11後のケーキの処分に際して投
檗場所の取得が困難でイル、投棄後もアルカリ分の融出
等で問題が必る。また、真空脱水機での脱水ケーキの水
分は80%迄でろって、焼却するにも助燃料を必蛎とし
、不経済でるる。次に、口11述のベルトブレスジま、
多数のロール間に掛けまわされたP布上にi(、いi4
 L/た汚泥を供給し、(1’ fli上で重力脱水を
した上で、千島状l(配設したロール間や対向ロール間
ン也遇させ、ルカ脱水した汚泥に、剪断力JP法y4方
向〃1らの圧力をツノ11えてj8水す/)ようにして
いる。このベルトプレスで目、羨酩汚泥を兜力脱水ゾー
ンで体々に脱水したのら、ジャリングロールや対1uJ
ロールで加圧する?Cめ、フロックはそれ程強固でなく
てもよく、従って、凝集剤としても石灰Jン用いなくて
、小Jztの硲加畦で済む有機性高分子klk剤を用い
ている。然しなから、このベルトプレスでは1.Ik長
力水ゾーンを紅た汚泥が上下−X−tす0」山に挾持嘔
れた状態で電送され、側方へは1山、抹想でジャリング
ロールや対向ロールVCよって・用圧ざIl、るりで、
側方へ逃げ、if” (1jからはみだjこことなり、
+I’t+ I上刃での加圧番ユ困Mでめる。ま1こ、
ジャリングロールや対向ロールは、1面を走1」葛ぜな
がら加圧するもので必るので、機構的にも面圧力でのノ
ル1圧は困難でめる。従って、従来のベルトプレスにし
゛〔も、高分子凝集ハリを使用して脱水ケーキ量は少な
いが、脱水後のケーキの含水率は70%まででめった。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dewatering Nj mud such as sewage, and improvements to F2 and Q used for the dewatering. Conventionally, in order to dehydrate sludge such as sewage, a vacuum dewatering machine that uses vacuum negative pressure, and a VC between a large number of rolls is used as the equipment.
P mountain of Swallow tJ is stretched (]1, pressure force of roll and r
Belt press using P fli glue long sword, P plate and f
A sealed transient chamber is formed with a P frame, and fl is added to the filtration chamber.
A filter press or the like that press-fits mud and dehydrates it using F4 is often used. When sludge is dehydrated using Toru et al.'s dewatering machine, the sludge is treated in advance to suit the dewatering operation of each machine, and an appropriate amount of filtration (dewatering) aid is added. For example, if the vacuum drum has an endless fP if
In a vacuum dehydrator of the type where f is multiplied and rotated, sludge is coagulated by adding slaked lime or sludge, and the vacuum drum is immersed in the sludge M times, and the sludge is immersed in the sludge for 1 K times. Sludge is layered under suction to separate moisture. However, in this vacuum dehydrator, a strong floc is required so that the floc that is attracted and layered around the drum does not collapse when the drum is removed from the water. For this reason, in conventional vacuum dehydrators, it is necessary to add slaked lime and iron chloride as flocculating agents to create strong flocs. Since m is large and large, the dehydrated cake base increases, and when disposing of the cake after 11 days, it is difficult to obtain a dumping place, and problems such as alkali content leaching even after dumping are inevitable. Moreover, the water content of the dehydrated cake in a vacuum dehydrator is up to 80%, and auxiliary fuel is required to incinerate it, making it uneconomical. Next, the belt bracelet mentioned in 11.
i (, i4
L/L sludge was supplied, and after gravity dewatering on (1'fli), the sludge was subjected to shear force JP method y4 by passing it between rolls arranged in a chisel pattern or between opposing rolls. The pressure in the directions 〃1 and 1 is applied to the horns 11 and j8 water/).After dehydrating the sludge with this belt press in the Kabuto force dewatering zone, it is used as a jarring roll or as 1uJ.
Pressure with a roll? C. The flocs do not need to be so strong, so lime is not used as a flocculant, and an organic polymer klk agent is used, which requires only a small ridge. However, with this belt press, 1. The red sludge in the Ik Nagali water zone is transmitted in a state of being pinched in piles up and down, and is sent to the side in one pile, and is automatically pressed by jarring rolls and opposing rolls VC. It's Ruri,
Run to the side, if'' (J is here from 1J,
+I't+ Pressurize with the upper blade. Ma1ko,
Since jarring rolls and opposing rolls must apply pressure while running on one surface and twisting, it is mechanically difficult to achieve 1-level pressure with surface pressure. Therefore, even with the conventional belt press, the amount of dehydrated cake was small due to the use of polymer coagulation, but the moisture content of the cake after dewatering could reach up to 70%.

次に、フィルタプレスは、これら真空脱水様やベルトプ
レスに比較して密閉された濾過室内で汚泥を加圧するの
で、真空脱水機やベルトプレスの数倍もの加圧が可能で
める。然しなから、凝集した汚泥の70ツク内の水は、
加圧力のみでは限界が心って分離できず、過大な加圧を
することによって1伍の目に押込まれ濾過不能となる。
Next, compared to these vacuum dehydrators and belt presses, filter presses pressurize the sludge in a sealed filtration chamber, so they can pressurize several times as much as vacuum dehydrators and belt presses. However, the water in the 70 volumes of flocculated sludge is
It is not possible to separate the particles by applying pressure alone, but if too much pressure is applied, the particles are pushed into the first row of holes, making it impossible to filter.

従って、従来、フィルタプレスでは、汚泥に消石灰や塩
化鉄等を加えて、強固なフロックを形成し、高圧加圧に
耐えて脱水ができるようにし、下水汚泥の場合でも60
f6程度の含水ケーキを得ていた。然しなから、この場
合にも踵固なフロックを形成するために人情の消石灰を
必冴とし、こJLが脱水ケーキを増指し、φ後のケーキ
の処分な困難VCしていた。
Therefore, conventional filter presses add slaked lime, iron chloride, etc. to sludge to form strong flocs that can withstand high pressure and perform dewatering.
A water-containing cake of about f6 was obtained. However, in this case as well, slaked lime was necessary to form a hard floc, and this JL increased the amount of dehydrated cake, making it difficult to dispose of the cake after φ.

この発明は、上述のような従来の脱水上の問題K Mみ
てなされたもので、発明者らは、先ず、高脱水ケーキを
潜るKは、高圧加圧可能fLフロックをi9ること、次
に、高圧加圧が可能な脱水機としてil、フィルタプレ
スがJ′縫適である点に着目して悼々テストを止オコた
結果、噸固なフロックを形成することに成功し、これ馨
フィルタプレスで加圧脱水しで、11[来のフィルタプ
レスでなした同等の1;’+1脱水ケーキなイυること
に成功したものでめる。
This invention was made in view of the conventional dehydration problems KM as mentioned above. First, the inventors discovered that in order to dive through a highly dehydrated cake, the fL floc that can be pressurized at high pressure was i9, and then As a dehydrator that can apply high pressure, we focused on the fact that the filter press was suitable for J' sewing, and as a result of repeated tests, we succeeded in forming a firm flock, and this is the new filter. By pressurizing dehydration using a press, we succeeded in producing a dehydrated cake of 11 [1;

以下、この発明を実施例を交えながら具体的に+ik明
すhば、この発明の最大のrf!i長は、必る時定の・
氾囲の分子−はの高分子凝集剤を用いて、これを下水汚
泥にみ加することによって強固なフロックを形成した点
にあり、また、他の特長として、上記のようにして形成
した70ツクを脱水するために、フィルタプレスの密閉
濾過藁を用いた点にろる。すなわち、d”、 I Hは
、この発明に係る汚泥の、侃水方法を用いる高分子凝集
剤の分子skを示すもので259、この表1・(示す高
分子凝集剤Cよ、これを;7+S 41口すめこと忙よ
って強固なフロックを形成できC、フィルタプレスで脱
水ロエ能で必っ7Cものを示し、ている。(その効果を
示す 実施例については・’i 1%する。) 第 1 社 第1表によれば、フロック形成の上で効果が認められた
高分子凝集側番よ、預カチオン性で、品分ものでめり、
特に、顕著な効果が認められたものは、lO万〜150
万のもので必る。r61 、分子量1万の4g19AB
、O,分子yiso万のq+ll M Gのもの舎よ、
他の場所の汚泥シ(対しても効果を奏する可ii己性も
めるが、後述の実施テストでは、曲の禎J(A−F)の
高分子凝集剤に比較して幼果が劣った。
Hereinafter, this invention will be explained in detail with examples. i-length is necessarily fixed time.
The point is that a strong floc was formed by using the polymer flocculant of Floodwall Molecule-Han and adding it to sewage sludge. To dehydrate the tsuku, filter it to the point using a sealed filter straw in a filter press. That is, d'', IH indicates the molecule sk of the polymer flocculant using the water reflow method for sludge according to the present invention, and this Table 1 shows the polymer flocculant C shown in Table 1. 7+S 41 times a day, it can form a strong floc, and the dehydration ability with a filter press is guaranteed to be 7C.(For examples showing the effect, see 1%.) According to Table 1 from 1 company, the polymer coagulation side number, which has been found to be effective in floc formation, has cationic properties,
In particular, those that have been found to have a remarkable effect are
It is necessary for ten thousand things. r61, 4g19AB with a molecular weight of 10,000
, O, molecule yiso million q+ll M G's house,
Although it is also effective against sludge in other places, in the practical test described below, the young fruit was inferior to the polymer flocculant of Song Tei J (A-F).

次に、第2辰は、上述高分子凝集剤を用いて各地の汚泥
を脱水した場合におけるケーキ水分な示すものであり、
備考欄の数字は同じ場所の汚泥に同じ汎分子畝集削を同
堆硲加して、ベルトプレス(,7371′6+ 参照)
を用いて脱水したケーキの水分を7Fす・ 第 2 表 +:a、−ト盲シケーキ水分は、フィルタプレスへQ)
汚泥の圧入圧力が5〜、圧搾圧力が15′1−で8す、
比較のために使用したベルトプレスは、概要を第7図に
示す通シでらり、V布張力は略4)−でめった。第2表
で明らかな如く、従来の品分子址(1れていたフィルタ
プレス+Cよる下水汚泥の脱水を0工能としたものでる
る。然も、その脱水ケーキのべ分は、同じ条件でベルト
プレスで脱水したものに比較して10%も優るものであ
る。また、?J! 2表によれば、低分子量に属する凝
集剤でも、その分子■が50〜70万であるIli、F
の凝集剤t;イa1死の場所の汚泥に対しても顕著な効
果を奏することを示している。
Next, the second column shows the cake moisture when sludge in various places is dehydrated using the above-mentioned polymer flocculant,
The numbers in the notes column are obtained by adding the same panmolecular ridge cutting to the sludge in the same place and using a belt press (refer to 7371'6+).
Remove moisture from the dehydrated cake using a 7F table.
The sludge injection pressure is 5 to 8, and the squeezing pressure is 15'1-8.
The belt press used for comparison had a general outline as shown in FIG. 7, and the V fabric tension was approximately 4). As is clear from Table 2, the dewatering of sewage sludge using a filter press + C, which was used in the conventional product (1), has been reduced to zero. It is 10% superior to that dehydrated with a belt press.Also, according to the ?J!2 table, even among the flocculants belonging to the low molecular weight, Ili, F whose molecules
It has been shown that the coagulant t;a1 has a remarkable effect on sludge at the place of death.

以上は、添加する高分子凝集剤の分子量と脱水ケーキの
含水率との関連でaるが、次に、りS3表は凝集剤の添
加率とケーキの含水率との関係をテストした結果を示す
もので少る。
The above is about the relationship between the molecular weight of the polymer flocculant added and the moisture content of the dehydrated cake.Next, Table S3 shows the results of testing the relationship between the addition rate of the flocculant and the moisture content of the cake. There is little to show.

第 3 ぺ との間には、凝集剤の添加葉を増せば増す程、ケーキ水
分を下げ得ると考えることができる。]111、第3表
における凝集剤は、分子量1o万のA(仮称)lる高分
子凝集剤であるが、他の分子量の異なる凝集剤、例えば
、分子i50〜7o万の高分子凝集剤(仮称11i、F
)を用いた場片でも同じ部内を示すことが確認された。
It can be considered that the more flocculant added during the third period, the more the cake moisture can be lowered. ]111, the flocculant in Table 3 is a polymer flocculant A (tentative name) with a molecular weight of 10,000, but other flocculants with different molecular weights, such as polymer flocculants with a molecular weight of 500,000 to 70,000 ( Tentative name 11i, F
) was confirmed to show the same area.

また2添加詠に関してiJ B B (汚泥中の固形物
に対すゐ比)1.5%以下および対ss3%以上(′c
ついてもテストし、同じ部内が確認されたが、対ss添
加]10.5%以下でンま脱水効果に乏しいので、また
、883%以上では経済性からみて割愛した。
Regarding addition of 2, iJ B B (ratio to solids in sludge) 1.5% or less and ss 3% or more ('c
However, since the dehydration effect is poor at ss addition of 10.5% or less, and from the economical point of view, ss addition of 883% or more was omitted.

次に、加圧脱水する隙の加圧圧力であるが、第4表は、
フィルタプレスにおける圧搾圧力と脱水ケーキの水分の
試織結果を示すものであり、この第4表によれば、圧搾
圧力が高い程、ケーキ水分を低減できる。この点、第4
表に示すような15Aljの濾過圧力(圧搾圧力)で、
大僅の汚泥を処理できる脱水機としては、フィルタプレ
スが最も適合しているもので、フィルタプレス以外の脱
水機では、このような高分子凝集剤を用いてのA%脱水
(1困’、:+Mで必る。−ま)こ、この高分子凝集剤
を用いての況水pc l’+’i Lで、試り・芝を7
元ける途中において、枦dのcqi A、すなわち、脱
水時のケーキノ!Iみも、ケーキ含水、(・1のi[i
要i因子となっていることが判明し、゛こ。955表1
よ、−)iLの圧操圧力で!沈水した場合K 、t、−
けるケーキの19いと水分の関連を示すもので、1〕す
、rP W ノtt=きが浅い6會水率が低下している
0すなわち、lJ」室が浅い場合には薄いケーキが形1
・kさit、深い場合は厚いケーキが形rrQされるが
らで7らる。この理由としては、/I’室が浅い場合に
は、IE]’++圧力によってケーキの厚みは、例えば
、i1第 4 表 第5表 室が8にmの深さの場合は5ffの厚さまで圧搾され、
内部の水分が充分押し出されるが、11−至の朶さが深
い場合は、高い圧搾圧力によっても、り°−ギの内部の
水分迄もは充分絞り切れないものと考えら収る。因みに
、濾過室の深さが14&ffの場合に、15〜の圧力で
圧搾した場合、ケーキJIみiまIQmm程度で必る。
Next, regarding the pressurized pressure in the gap for pressurized dewatering, Table 4 shows:
Table 4 shows the test results of the squeezing pressure in the filter press and the water content of the dehydrated cake. According to this Table 4, the higher the squeezing pressure, the more the cake water content can be reduced. On this point, the fourth
At the filtration pressure (squeezing pressure) of 15Alj as shown in the table,
A filter press is the most suitable dehydrator that can process a small amount of sludge. : Must be +M.-Ma) This is the condition water pc l'+'i L using this polymer flocculant.
On the way to get rid of it, I noticed CQI A, that is, Cakeno during dehydration! I mimo, cake water content, (・1 i[i
It turns out that the i factor is important. 955 table 1
Yo, -) With iL's pressure! If submerged, K, t, -
This shows the relationship between 19 of the cake and moisture content.
・If it is deep, a thick cake will be formed into a shape. The reason for this is that when the /I' chamber is shallow, the thickness of the cake due to the IE]'++ pressure is, for example, up to 5ff if the chamber is 8 m deep. squeezed,
If the moisture inside is sufficiently squeezed out, but the pores are deep, it is assumed that even with high squeezing pressure, the moisture inside the rig cannot be squeezed out sufficiently. Incidentally, if the depth of the filtration chamber is 14 mm and the pressure is 15 mm or more, the cake depth will be approximately IQ mm.

このことからして、1ノリえば、30 ’%dで圧搾す
るとしても、濾過室の深さ覗・よ20朋が限界でめると
考えられる。このときのケーキ厚は13)騙a度と推定
される。
Judging from this, it is thought that even if one squeeze is performed at 30'%d, the maximum depth of the filtration chamber can be reached at 20 mm. The cake thickness at this time is estimated to be 13) degree of fraud.

以上、この発明に用いるa ’A rill 、それの
小ツノロー仏、脱水圧力等について説明したが、これら
の脱水ケーキの水分に及ぼす諸因子11、汚泥のルΔ水
」二、6単独に影響するものでは、よく、互いに、こル
らtJ因子がイ(J互PC関連作用するものでるる。ま
fc s以上説明した結果は、リーフテスト機に依る試
験441i果であるが、第6表は、1枚の1戸板の濾過
■績かI格2+J/ T−あるフィルタプレスの実用機
で下水汚泥を脱水し、任意のP Mを抜枢ってその脱水
ケーキの含水率の分布を示したものである。円で囲んだ
数字は、ケーキが位置した部位を示している。
Above, we have explained the a'A rill used in this invention, its small horn, dewatering pressure, etc., but these factors that affect the water content of the dehydrated cake, 2, 6 independently affect the water content of sludge. In many cases, these tJ factors interact with each other in relation to each other. , the filtration performance of one single board was I grade 2+J/T- Sewage sludge was dehydrated using a practical filter press, arbitrary PM was removed, and the water content distribution of the dehydrated cake was shown. The numbers in the circle indicate the area where the cake was located.

また、脱水本件は次の通シでめった。In addition, the dehydration problem occurred in the following cases.

汚泥のp室への圧入時間 8分 圧入後の圧搾111間 8分 圧入圧力 5〜 圧搾圧力 15地 添加高分子凝集剤の分子量 70万(01J述符号Fのもの) 凝集剤の添加率 対88 2% 汚泥濃度 4.05%(W/V) 汚泥性状 M処理場 消化汚泥 第 6 表 ■ 4〜5 59.5 ■ 4〜66L8 ■ 6〜10 61i6 ■ 4〜760.5 ■ 6〜10 − この結果と前述のり−7テスト機による結果とを比較す
れば、水分においてリーフテスト機よシも曖Jtておシ
、実用化したとき、更に、脱水効果がル」待できる。l
た、この結果を前述第2表の絢考欄に記載したベルトプ
レスの実用機の試験結果と比較すれは、その脱水ケーキ
の含水率において10%以上の差があり、他の真空脱水
機や遠心脱水機に比較すれば、さらに格段の差かりるは
説明するまでもなく、すぐれた脱水効果を有することを
9勿語っている。17i1、従来のベルトフルレスでは
、本発明に使用した低分子量の凝集剤は、使用不可1J
シでめったので、従来使用している分子thIt6o。
Injection time of sludge into the P chamber: 8 minutes for 111 hours of compression after 8 minutes Injection pressure: 5 - Squeezing pressure: 15 Molecular weight of soil-added polymer flocculant: 700,000 (01J code F) Addition rate of flocculant: 88 2% Sludge concentration 4.05% (W/V) Sludge properties M treatment plant Digested sludge Table 6 ■ 4-5 59.5 ■ 4-66L8 ■ 6-10 61i6 ■ 4-760.5 ■ 6-10 - Comparing this result with the result obtained by the above-mentioned Nori-7 test machine, it is clear that the leaf test machine is far superior to the water test machine, and we can expect a further dehydration effect when it is put into practical use. l
In addition, when comparing these results with the test results of the practical belt press described in the details column of Table 2 above, it was found that there was a difference of more than 10% in the moisture content of the dehydrated cake compared to other vacuum dehydrators and There is no need to explain that there is an even more significant difference when compared to a centrifugal dehydrator, and it goes without saying that it has an excellent dehydrating effect9. 17i1, the low molecular weight flocculant used in the present invention cannot be used in conventional belt fullless systems.1J
Since I was having trouble with this, I used the conventionally used molecule thIt6o.

万以上の品分子凝集、1すを使用した。また、A望脱水
イばても本発明K 1i!!用した低分子量のは巣剤番
よ、沈用不rhf症でめった。
More than 10,000 molecular aggregates were used. Moreover, even if A dehydration occurs, the present invention K 1i! ! The low molecular weight drug I used was very rare, and I had a rare case of rhf syndrome.

:、sノ、以上の試験に用いたフィルタプレスは、リー
フテスト機〉よび躬1図〜第3図に示ず羊独vj(1d
走行式の単式フィルタプレスを用いたが、上述の試険結
果からみてこれに限定式れること、χく、列えぽ、第4
図〜第6図に示すような密閉濾過室1’i: ;rr 
して、高圧v1過が用能な慰造を有するフィルタプレス
でめれば、同様な効果が期44Fでさるもので必る。す
なわち、第4図に示すものは、多数並列したt+” :
仮1間にJi多成した密閉濾過盗2をr濾過脱水完了後
に、1枚1u開敬してケーキを剥離排出する形式りもの
でめり、第5図に示すものは、多数+1l−91」シた
P板間に悪ン11シ状のfP 11j 3ケジグザグ状
V(a+張して、各n]&間に形成場れたケーキを57
il離排出するシ(除しては、全炉板を一勢に開板する
とともに、炉布3を走行趙せる形式のものでるり、さら
に、第6図に示すものは、上配偶5図忙示す形式のもの
のP板を水平方向に設置したtので、一般に竪型と呼ば
れているものでるる。以上、何れの形式のフィルタプレ
スに卦いても、密閉P ]i→φを911+えるととも
に、高圧力でのlJj過脱水が可N]二なる点が共通し
ているものである。
:、sノ、The filter press used in the above tests was a leaf test machine and a filter press (not shown in Figures 1 to 3).
A traveling type single filter press was used, but judging from the test results mentioned above, it is limited to this type.
Sealed filtration chamber 1'i as shown in Figures to Figure 6: ;rr
If a filter press having a structure capable of passing through high pressure V1 is used, a similar effect will be obtained at 44F. That is, what is shown in FIG. 4 is a large number of parallel t+":
After completing the R filtration and dehydration of the sealed filtration filter 2 which had accumulated a lot of Ji in a temporary period of time, we performed a formal ritual in which one piece of 1U was opened and the cake was peeled off and discharged. ” 11 shi-shaped fP 11j 3 zigzag-shaped V (a + stretched, each n] & cake formed between 57
The one shown in Figure 6 is one that opens all the furnace plates at once and allows the furnace cloth 3 to move. Since the P plate of the type shown is installed horizontally, it is generally called a vertical type.As shown above, regardless of the type of filter press, the airtightness P ]i→φ is 911+ and , lJj excessive dehydration is possible at high pressure.] They have two things in common.

以上を要するに、この発明は特Wのイ]様116分子疑
集剤を用いて汚泥を凝集し、強固なフロックを形成する
ことに成功し、フィルタプレスでは、従来不可能とされ
た有機高分子凝集剤で、凝集した汚泥の脱水に成功した
ものでろジ、フィルタプレスを用いて密閉−過室におい
て、高圧zJJ過が+JJ’ f市なるが故に、その含
水率を従来のベル1プレス等の加圧1j−1過機に比較
しても犬l】に下げイ;Iるとともに、従来用いた消石
灰や塩化鉄等の浣加物に比較して、での格≦7JII妬
が格別少なくて済み、91後のケーキの処分VC際して
も諸鮭費を太1]にr+lj減し1dるものでめる。
In summary, this invention has succeeded in flocculating sludge and forming a strong floc using a special 116-molecule collector, and has succeeded in coagulating sludge to form a strong floc. The flocculating agent was used to successfully dewater the flocculated sludge.In a sealed-filter chamber using a filter press, high pressure ZJJ filtration becomes Compared to the pressurized 1j-1 filter, it is much lower than the average pressure, and compared to the conventionally used slaked lime and iron chloride, there is an extremely low level of 7JII. Even when disposing of the cake after 91, the various salmon costs will be reduced by r + lj to 1] and 1d will be calculated.

【図面の簡単な説明】[Brief explanation of the drawing]

第1i/!、lは、この発明に夏用するフィルタプレス
の似11αの側面図を示し、582図および処3図は、
吟−(のびj板の構造を説明するためのその縦断側面図
、jS4図〜記6図1よ、各槌のフィルタプレスのそれ
ぞれの概略の側聞図、第7図は、ベルトプレスの4i1
逍を説明するための4を略の側面図でわる。 符号説明 1、 枦 板 2.濾過室 3. F 布オ 2 I 菌 矛 φ 図 矛9図 才 6 x
1st i/! , l shows a side view of a filter press similar to 11α used for summer use in this invention, and Fig. 582 and Fig. 3 are:
Figure 1 is a longitudinal cross-sectional side view to explain the structure of the extending plate, and Figure 1 is a schematic side view of each mallet filter press. Figure 7 is a 4i1 side view of the belt press.
4 is shown in a schematic side view to explain the appearance. Code explanation 1, 枦板 2. Filtration chamber 3. F cloth o 2 I germ spear φ picture spear 9 figures 6 x

Claims (1)

【特許請求の範囲】 (1) 下水等の排水汚泥を脱水するに当り、先ず、排
水汚泥にカチオン性高分子凝集剤を添加してaf: 集
濃縮したのち、これを圧入ポンプでフィルタプレスの密
閉i濾過室に圧入脱水することを・侍イ以とする汚泥の
脱水方法。 (2) 上記高分子凝集剤の分子凰が10’〜150X
10’、好ましくは105〜7X1θ5でるる特If′
F請求の範囲第t11項記載の汚泥の脱水゛方法。 (3) 上記高分子凝集ハ1jの添加量が汚泥中の乾燥
固形物に対して、−t−JJk比で0,5〜5%でめる
特許請求の範囲第(1)項記載の汚泥の脱水方法。 +41 上記高分子凝集剤の添加前の汚泥一度が、1〜
5χで必る爵許請求の範囲第fil ノjt記載の汚泥
の脱水方法。 (5) 上記フィルタプレスへの汚泥を圧入す心に当り
、先ず、圧入圧力3〜7〜で圧入脱水したのち、続いて
の圧搾圧力10〜40−で圧搾脱水することを特徴とす
る特許請求の眺囲第(11項記載の汚泥の脱水方法。 (6) 上記密閉濾過室へ凝集汚泥な供給脱水するに当
って、10〜〜30−で圧入し、脱水することを特徴と
する特許請求の範囲第(11項記載の汚泥の脱水方法。 (7) 前記特許請求の範囲第i11項記載のa縮汚泥
を脱水するためのフィルタプレスのB5過室の深さが5
〜20關でろり、その濾過室の少なくとも、−側にダイ
ヤフラムが設けられていることを特徴とする汚泥の脱水
装置。 (8) 上Ieフィルタプレスの濾過γが、v5板とC
枠とにエフで構成されている特許請求の範囲第(7)項
記載の汚泥の脱水装置。 (9) 上記フィルタプレスの濾過室が水平状に設けら
れている特許請求の範囲第(7)項記載のγすdらの脱
水装置。 すq 上記濾過室に設けるP市が、各ff’J室毎にノ
柊独で走行ijJ’能に赦げられていることを特歓とす
るII+f許請求の範囲第(7)項記載の汚泥の脱水装
置。 (111上ife 濾過室に設けるP布が長尺の無端状
にり、3成姑れて、谷i+j板面に沼って走行可n目に
設けられていることを41f徴とする特許請求の範囲第
(7)項記載の汚泥の脱水装置。 間 上記一過室に設けるtp布が、各P板にそルービル
固定されてhることを特徴とする特許請求の1犯囲第(
7)項記載の汚泥の脱水装置。
[Scope of Claims] (1) When dewatering wastewater sludge such as sewage, first, a cationic polymer flocculant is added to the wastewater sludge to collect and concentrate it, and then it is pumped into a filter press using a pressure pump. A sludge dewatering method that involves pressurizing the sludge into a sealed filtration chamber. (2) The molecular weight of the polymer flocculant is 10' to 150X
If' is 10', preferably 105 to 7X1θ5
A method for dewatering sludge according to claim t11. (3) The sludge according to claim (1), wherein the amount of the polymer flocculation agent 1j added is 0.5 to 5% in -t-JJk ratio with respect to the dry solids in the sludge. Dehydration method. +41 The sludge before adding the above polymer flocculant is 1~
5. A method for dewatering sludge according to claim No. fil no. (5) A patent claim characterized in that when the sludge is forced into the filter press, the sludge is first injected and dehydrated at a pressure of 3 to 7, and then dehydrated by compression at a pressure of 10 to 40. View No. (method for dewatering sludge according to item 11). (6) A patent claim characterized in that in supplying the flocculated sludge to the closed filtration chamber and dewatering it, the sludge is pressurized at a pressure of 10 to 30 to dehydrate the sludge. (7) The depth of the B5 chamber of the filter press for dewatering the a-shrunken sludge according to claim 11 is 5.
1. A sludge dewatering device characterized in that a sludge dewatering device is provided with a diaphragm at least on the negative side of the filtration chamber. (8) The filtration γ of the upper Ie filter press is
A sludge dewatering device according to claim 7, wherein the sludge dewatering device is constructed of a frame and a F. (9) The dewatering apparatus of γsd et al. according to claim (7), wherein the filtration chamber of the filter press is provided horizontally. sq II+f Claim as stated in Clause (7) above, in which the P city provided in the above-mentioned filtration chamber is allowed to run independently in each ff'J room. Sludge dewatering equipment. (111 above ife Patent claim in which the P cloth provided in the filtration chamber is in a long, endless shape, and is provided at the nth position so that it can run on the plate surface of the valley i + j. A sludge dewatering device according to item (7) of the scope of the present invention.
The sludge dewatering device described in section 7).
JP58191290A 1983-10-13 1983-10-13 Method and device for dehydrating sludge Pending JPS6082199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58191290A JPS6082199A (en) 1983-10-13 1983-10-13 Method and device for dehydrating sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58191290A JPS6082199A (en) 1983-10-13 1983-10-13 Method and device for dehydrating sludge

Publications (1)

Publication Number Publication Date
JPS6082199A true JPS6082199A (en) 1985-05-10

Family

ID=16272101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58191290A Pending JPS6082199A (en) 1983-10-13 1983-10-13 Method and device for dehydrating sludge

Country Status (1)

Country Link
JP (1) JPS6082199A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200896A (en) * 1985-02-28 1986-09-05 Ngk Insulators Ltd Dehydration treatment of organic sludge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49124855A (en) * 1973-04-02 1974-11-29
JPS53123558A (en) * 1977-04-04 1978-10-28 Kurita Water Ind Ltd Sludge dehydration method
JPS54121557A (en) * 1978-03-15 1979-09-20 Toa Gosei Chem Ind Coagulant
JPS57117312A (en) * 1980-11-29 1982-07-21 Basf Ag Method of dehydrating deposited sludge by filter press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49124855A (en) * 1973-04-02 1974-11-29
JPS53123558A (en) * 1977-04-04 1978-10-28 Kurita Water Ind Ltd Sludge dehydration method
JPS54121557A (en) * 1978-03-15 1979-09-20 Toa Gosei Chem Ind Coagulant
JPS57117312A (en) * 1980-11-29 1982-07-21 Basf Ag Method of dehydrating deposited sludge by filter press

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200896A (en) * 1985-02-28 1986-09-05 Ngk Insulators Ltd Dehydration treatment of organic sludge

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