JPS62136300A - Dehydration treatment of sludge - Google Patents
Dehydration treatment of sludgeInfo
- Publication number
- JPS62136300A JPS62136300A JP60275604A JP27560485A JPS62136300A JP S62136300 A JPS62136300 A JP S62136300A JP 60275604 A JP60275604 A JP 60275604A JP 27560485 A JP27560485 A JP 27560485A JP S62136300 A JPS62136300 A JP S62136300A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- water
- heated
- dehydration
- containing sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 73
- 230000018044 dehydration Effects 0.000 title claims abstract description 23
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 23
- 208000005156 Dehydration Diseases 0.000 title abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000003756 stirring Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000004744 fabric Substances 0.000 claims abstract description 20
- 238000005406 washing Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 239000011882 ultra-fine particle Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000011109 contamination Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 9
- 238000007664 blowing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000005416 organic matter Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 101100370022 Caenorhabditis elegans tofu-1 gene Proteins 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は含水スラッジの脱水処理にかかり、特に極微粒
のスラッジ或は油類等の有機物を含むスラッジ等の非容
易性の高いスラッジを対象とした脱水処理方法に関する
ものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to the dehydration treatment of water-containing sludge, and is particularly applicable to highly difficult-to-easy sludge such as ultrafine sludge or sludge containing organic matter such as oil. The present invention relates to a dehydration treatment method.
（従来の技術）
従来、含水スラッジから脱水され友スラツジケ回収する
中段としては、一般に、スラッジを撹拌槽中で窩部撹拌
した後、脱水機のＰ布を用いて脱水し、回収を行なって
いる。ま友、Ｆｉが汚れ、目詰シ等を起し九場合は常温
水によってＦ布ｔ−洗浄する方法をとっている。(Prior art) Conventionally, as a middle stage for dewatering and recovering sludge from water-containing sludge, the sludge is generally stirred in the cavity in a stirring tank, then dehydrated using a P cloth of the dehydrator, and then recovered. . However, if the Fi becomes dirty or clogged, the method is to wash the F cloth with room-temperature water.
また、特に脱水処理が困難なものとしてエマルジョン化
し几含油排水処理スカムがあシ、例えば特公昭５４−２
８４５０号公報に示されている工うに８０℃以上に加熱
してエマルジョンを破壊し、遠心脱水機にニジ脱水する
方法が知られている。In addition, it is particularly difficult to dehydrate the scum that is formed into an emulsion and treated with oil-containing wastewater.
A method disclosed in Japanese Patent Application No. 8450 is known in which the emulsion is broken by heating to 80° C. or higher, and the emulsion is dehydrated using a centrifugal dehydrator.
（発明が解決しようとする問題点）
しかし、従来の一般的なスラッジ回収方法では以下に示
す欠点がある。(Problems to be Solved by the Invention) However, the conventional general sludge recovery method has the following drawbacks.
即ち、回収するスラッジが弱酸スラッジのように粒度が
１００μｍ以下と極めて微粒で親水性が強い場合はゾル
化し、ＦｌにＬる脱水ができない。That is, when the sludge to be recovered is extremely fine with a particle size of 100 μm or less and has strong hydrophilic properties, such as weak acid sludge, it becomes a sol and cannot be dehydrated to Fl.
また、圧砥スラッジのように圧砥油、グリース等の有機
物を含んでいる場合はＦ布の汚れ、目詰りが発生しやす
（、を九富温水による洗浄では効果か弱いため脱水処理
巡、稼働尤の低下が著しく、Ｐ布破損等のｔＪ１４度も
高い。In addition, when grinding sludge contains organic substances such as grinding oil and grease, the F cloth is likely to become stained and clogged. The decrease in the resistance is remarkable, and the tJ14 degrees due to P fabric damage etc. are also high.
また、加熱管内で８０℃以上に加熱してエマルジョンを
破壊する手段が適用される含油排水処理スカムの場合に
は弱酸スラッジ、ＥＥｉスラッジ等では撹拌槽内で多量
のスラッジを加熱するため、７５℃以上に加熱すると含
水スラッジからの水分蒸発が著しく、撹拌槽への付着が
多くなる。ま友、スラッジ水分減少のため粘性が増し、
かえって脱水処理時間が低下する。ζらに、受水槽、撹
拌槽内の含水スラッジ全体ｙｐｇｏｃ以上に加熱、保温
することは経済的に困難である。In addition, in the case of oil-containing wastewater treatment scum, which is heated to 80°C or higher in a heating tube to destroy the emulsion, weak acid sludge, EEi sludge, etc. are heated to 75°C in order to heat a large amount of sludge in a stirring tank. If the sludge is heated to a higher temperature, water evaporates significantly from the water-containing sludge, resulting in increased adhesion to the stirring tank. Mayu, the viscosity increases due to the decrease in sludge moisture,
On the contrary, the dehydration processing time is reduced. In addition, it is economically difficult to heat and keep the entire water-containing sludge in the water receiving tank and stirring tank above ypgoc.
本発明は、これらの回収不能または困難な弱酸スラッジ
お工び圧廷スラッジ等を効巡ｓ（脱水し。The present invention effectively dewaters these unrecoverable or difficult weak acid sludges, compressed sludges, etc.
回収する方法を提供することを目的とする。The purpose is to provide a method for recovering.
（問題点を解決するための手段）
本発明は１粒度が１０１）μｍ以下の極微粒、或は油類
等の有機物を含んだ含水スラッジを脱水するに際し、含
水スラッジを貯溜、撹拌する第１工程と、次いで脱水す
るｇｚ工程とに工す処理する方法において、第１工程で
含水スラッジの＠度を４０〜７５℃に加熱しながら撹拌
し、第２工程で脱水処理を行ない、かつ脱水後の戸布を
４０〜７５℃の温水にて洗浄することを特徴とするスラ
ッジの脱水処理方法である。第１工程での含水スラッジ
の加熱、撹拌は、第１工程に設けられた含水スラッジ加
熱手段、含水スラッジ流動手段にニジ行なう。(Means for Solving the Problems) The present invention provides a first method for storing and stirring the water-containing sludge when dehydrating water-containing sludge containing ultrafine particles with a particle size of 101) μm or less or organic matter such as oil. In the method of processing in the step and the gz step of dehydration, in the first step, the water-containing sludge is stirred while being heated to 40 to 75°C, and in the second step, the dehydration treatment is performed, and after dehydration. This is a sludge dehydration treatment method characterized by washing a door cloth with hot water of 40 to 75°C. The heating and stirring of the water-containing sludge in the first step is carried out through the water-containing sludge heating means and the water-containing sludge flowing means provided in the first step.
（作用）
本発明における脱水処理の工程を第１図に示し７’Ｃ例
にもとづいて説明する。(Function) The dehydration process in the present invention is shown in FIG. 1 and will be explained based on Example 7'C.
１け第１撹拌槽、２は第２撹拌酸である。処理対象の含
水スラッジＳは貯溜するためにスラリーポンプ３によっ
て第１撹拌槽１に装入される。この際の含水スラッジＳ
の水分はスラリー輸迷に適した７０〜８０％に調整され
ており、常温である。1 is a first stirring tank, and 2 is a second stirring acid. The water-containing sludge S to be treated is charged into the first stirring tank 1 by the slurry pump 3 for storage. At this time, water-containing sludge S
The moisture content of the slurry is adjusted to 70 to 80%, which is suitable for slurry transport, and the temperature is normal.
第１撹拌１）１）の開口部にはフィルター４がついてお
シ、大きな不純物等を除去する。First stirring 1) A filter 4 is attached to the opening of 1) to remove dust and large impurities.
この撹拌槽１．２には貯溜されｆｃ含水スラッジｓ２加
熱する装置として蒸気支ｇ５、然気吹込管６が槽内に固
定もしくは移動可能なように設置はれている。蒸気吹込
量ならびに開閉はコック７で調整可能になっている。ま
友％含水スラッジＳｆ：撹拌する友めの装置として撹拌
機８が付いている６加熱の手段としては電熱、燃焼熱等
が考えられ、含水スラッジを流ｗＪζせる手段としては
槽自体の揺動、気体吹込み等が考えられる。加熱用の蒸
気吹込量にＬつては蒸気にニジ撹拌を載るととも可能で
ある。In this stirring tank 1.2, a steam branch g5 and a natural air blowing pipe 6 are fixedly or movably installed as devices for heating the fc water-containing sludge s2 stored in the stirring tank 1.2. The amount of steam blown and opening/closing can be adjusted with a cock 7. % Water-containing sludge Sf: A stirrer 8 is attached as a companion device for stirring 6 Electric heat, combustion heat, etc. can be considered as a means of heating, and shaking of the tank itself is a means to flow the water-containing sludge wJζ , gas blowing, etc. Depending on the amount of steam blown for heating, it is possible to add continuous stirring to the steam.
ｔｇ１撹拌槽１で加熱、撹拌された含水スラッジＳはポ
ンプ９にて第２撹拌槽２へ移され、同様に蒸気吹込Ｗ６
に工り加熱され、撹拌機８にて撹拌される。この場合、
含水スラッジＳは第１）を拌槽１にて加熱、昇温これて
いるので、その温度レベルを保持するに足シる熱ｔを必
要に応じて加えればよい。The water-containing sludge S heated and stirred in the tg1 stirring tank 1 is transferred to the second stirring tank 2 by a pump 9, and similarly steam-injected W6
The mixture is then heated and stirred using a stirrer 8. in this case,
Since the water-containing sludge S (1) is heated and raised in temperature in the stirring tank 1, sufficient heat t to maintain the temperature level may be added as necessary.
しかし、ここで重要なことは、撹拌工程では含水スラッ
ジの温度を４０〜７５℃に保つべきであるということで
ある。この温度範囲に限定した理由は、次の通シである
。部ち、加熱これた含水スラッジは微粒子の凝集比が促
進されるとともに、熱変質にニジ親水性が低下するため
ゾル比しにぐ（なシ、水と粒子の分離が容易になる。ま
′ｆｃ、 ？布置れ、目詰シの原因となる油脂、グリー
ス等の有機物は昇温にニジ粘性が低下するとともに、一
部は加水分解を起して可溶性となる丸め、Ｐ７ｉ５への
付着が減少し、汚れ、目詰シ発生頻度が低下し、回収効
惠が向上される。また、Ｐ布に有機物が付着して汚れ、
目詰りが生じた場合も、温水洗浄にニジ洗浄効果が向上
する。However, what is important here is that the temperature of the water-containing sludge should be maintained at 40-75°C during the stirring process. The reason for limiting the temperature to this range is as follows. In addition, heated water-containing sludge promotes the agglomeration ratio of fine particles, and its hydrophilicity decreases due to thermal alteration, making it easier to separate water and particles than sol. fc, ?The viscosity of organic substances such as oils, fats, and greases that cause fabric placement and clogging decreases as the temperature rises, and some of them undergo hydrolysis and become soluble, resulting in less adhesion to P7i5. This reduces the frequency of dirt and clogging, and improves the recovery efficiency.Also, organic matter adheres to the P cloth and causes dirt,
Even when clogging occurs, the cleaning effect is improved by hot water cleaning.
而して、これらの効果を奏するためには含水スラッジの
温度は少なくとも４０℃以上とする必要がある。これニ
ジ低温では脱水処理時間が長くなる。ま友、脱水後のス
ラッジケーキの水分も多く残ることになシ、スラッジケ
ーキの厚みを厚く処理することが困難となるなど、実用
的な価値を失なうことになる。一方、昇温による効果を
期待して必要以上の高温にしても、本願発明対象のスラ
ッジの場合は格別に効果が増大するものではなく、むし
ろ含水スラッジからの水分蒸気が著しく、撹拌飛への付
着が多ぐなったり、含水スラッジの粘性が増加するため
、脱水処理方法が低下する。さらに、加熱に要する費用
の節減を重視することがこの種の廃棄物の処理には重要
で、経済的な操業が最も大切な条件である。また、含水
スラッジ温度を上げることは撹拌設備や脱水設備の劣化
を促進する。以上のことから、含水スラッジの昇温の上
限を７５℃に定めた。なお、実用的価値をスラッジの処
理量で評価すると第２図の如く浸る。Therefore, in order to achieve these effects, the temperature of the water-containing sludge needs to be at least 40°C or higher. At lower temperatures, the dehydration process takes longer. However, since a large amount of moisture remains in the sludge cake after dehydration, it becomes difficult to treat the sludge cake to a thicker thickness, which results in loss of practical value. On the other hand, even if the temperature is raised to a higher temperature than necessary in the hope of achieving an effect from increasing the temperature, the effect will not be particularly increased in the case of the sludge that is the object of the present invention.In fact, the water vapor from the water-containing sludge will be significant, and the agitation will be affected. The dehydration process deteriorates due to increased adhesion and increased viscosity of the water-containing sludge. Furthermore, it is important to focus on reducing heating costs in the treatment of this type of waste, and economical operation is the most important condition. In addition, increasing the temperature of the water-containing sludge accelerates the deterioration of stirring equipment and dehydration equipment. Based on the above, the upper limit of the temperature increase of the water-containing sludge was set at 75°C. In addition, when the practical value is evaluated by the amount of sludge processed, it is as shown in Figure 2.
以上の如く、撹拌槽１．２で加熱、撹拌これ文含水スラ
ッジは第２工程の脱水機１ｏのＦ布ｌｌ内に装入され、
脱水処理はれ、スラッジケーキＣが得られる。As described above, the water-containing sludge heated and stirred in the stirring tank 1.2 is charged into the F cloth 11 of the dehydrator 1o in the second step,
After dehydration treatment, a sludge cake C is obtained.
脱水処理の終った戸布１）は、スラッジケーキｃｌ取出
し友後に受水Ｗ！１２に貯溜これ友洗浄水をポンプ１３
、ノズル１４によって吹付けることによって洗浄される
。この洗浄水は蒸気吹込管６に工っで４０〜７５℃に昇
温し、Ｐ布の洗浄効果を高めている。After the dewatering process is completed, Tofu 1) receives water after taking out the sludge cake CL! Pump the cleaning water stored in 12 to 13
, by spraying with the nozzle 14. This cleaning water is heated to 40 to 75°C through the steam blowing pipe 6 to enhance the cleaning effect of the P cloth.
なお、本例では蒸気によるスラッジ、洗浄水の昇ｏＡヲ
行なっているが、スラッジ、洗浄水の温度を４０〜７５
℃に昇温することが可能であれば電熱、燃焼熱等の他の
加熱方法を用いても差支えない。In addition, in this example, the sludge and cleaning water are raised with steam, but the temperature of the sludge and cleaning water is 40 to 75 degrees.
As long as it is possible to raise the temperature to ℃, other heating methods such as electric heating and combustion heat may be used.
（実施例）
第１図に示す処理工程を用い、１パッチ処理能力３８ｍ
’の第１撹拌槽１に水分７５％の弱酸スラッジ（圧砥材
の酸洗処理による発生スラッジ）お工び圧廷スラッジを
３２２装入した。この時の含水スラッジの温度はおおＬ
そ２０℃であった。第１撹拌僧１には２００分間貯溜し
たが、初め４４分間蒸気吹込管６から３０に９／分の蒸
気を吹込んで７５℃に昇温しながら撹拌機８にて撹拌し
た。(Example) Using the processing process shown in Figure 1, the processing capacity for one patch is 38 m.
322 pieces of weak acid sludge (sludge generated by pickling of abrasive material) with a water content of 75% were charged into the first stirring tank 1 of '. The temperature of the water-containing sludge at this time is L
It was 20 degrees Celsius. The first stirrer 1 was stored for 200 minutes, and at first 9 minutes of steam was blown into the steam blowing pipe 6 to 30 for 44 minutes, and the mixture was stirred with the stirrer 8 while the temperature was raised to 75°C.
その後、撹拌を継続しながら６０分毎に５分根度蒸気を
吹込み、含水スラッジＳの＠度を４０〜７５℃に保った
。その後、含水スラッジＳを第２撹拌槽２にポンプ９を
用込て移し、ざらに２００分間、加熱、攪ｒ１：を続け
た。Thereafter, while stirring was continued, steam was blown in for 5 minutes every 60 minutes to maintain the temperature of the water-containing sludge S at 40 to 75°C. Thereafter, the water-containing sludge S was transferred to the second stirring tank 2 using the pump 9, and heating and stirring were continued for roughly 200 minutes.
撹拌後、含水スラッジ８１に４ｒ？ずつポンプ９にて脱
水ｅ＆１０中のＦ、［１）に装入し、脱水処理を行なっ
た。After stirring, water-containing sludge 81 is heated with 4r? Each sample was charged into F and [1) in dehydration e&10 using pump 9, and dehydration treatment was performed.
この間に容ｔ６ＰＦ／の受水！１２に洗浄水を貯め、３
０ｋｐ／分の蒸気を８分間吹込んで７５℃まで昇温し文
。脱水機１０での含水スラッジＳ約４ｎＩの脱水処理が
終了毎に、４０〜７５℃に昇＠された抗浄水約４Ｒｔボ
ンゾ１３にてノズル１４ニジＰ布１）に散水し、洗浄し
た。During this time, I received t6PF/ of water! Store washing water in 12, 3
The temperature was raised to 75°C by blowing steam at 0 kp/min for 8 minutes. Every time the water-containing sludge S about 4nI was dehydrated in the dehydrator 10, the cloth 1) was sprayed with water at about 4Rt anti-purification water heated to 40 to 75°C using the nozzle 14 of the bonzo 13 and washed.
従来のスラッジ回収方法と本発明に係るスラッジ脱水処
理方法との比較を第１表に示す。Table 1 shows a comparison between the conventional sludge recovery method and the sludge dewatering method according to the present invention.
同表に示す如く、本発明のスラッジ脱水処理方法による
と、従米回収不昨と寧れていたスラッジの処理が可能と
なり、回収量が１）１６ｍ’／Ｍ増加し友。また、戸布
の汚れ、目詰シ発生が減少し次ため、Ｐ布洗浄周期が１
回／３ケ月から１回／６ケ月と長くなった。このような
稼働巡の向上と、回収処理速度上昇にニジ、処理＃ヒカ
が１０００ｍ’／Ｍ程度から３０００ｍ’／Ｍまで向上
した。As shown in the table, according to the sludge dewatering method of the present invention, it becomes possible to process sludge, which has previously been difficult to recover, and the amount recovered increases by 1) 16 m'/M. In addition, the occurrence of dirt and clogging of the door cloth is reduced, so the cleaning cycle of the P cloth is reduced to 1.
It has become longer from 3 months/time to 6 months/time. As a result of this improvement in operation cycle and increase in recovery processing speed, processing #hika was improved from about 1000 m'/M to 3000 m'/M.
第 １ 表
（発明の効果）
以上、詳細に説明したように、本発明に工れば、従来回
収不能とされてい九スラッジの回収が可能となる。ま友
、Ｐ布の汚れ、目詰＃）発生が減少して戸布洗浄周期が
長くなシ、稼働工が向上する。Table 1 (Effects of the Invention) As explained above in detail, by incorporating the present invention, it becomes possible to recover nine sludges that were previously thought to be unrecoverable. Also, the occurrence of dirt and clogging of the P cloth is reduced, the cleaning cycle of the door cloth is lengthened, and the operation efficiency is improved.
第１図は本発明によるスラッジの脱水処理方法の一例を
示す図、第２図は含水スラッジ温度とスラッジ処理能力
との関係を示す図である。
１・・・第１撹拌槽、２・・・第２撹拌槽、３・・・ス
ラリーポンプ、４・・・フィルター、５・・−蒸気支管
、６・・・蒸気吹込管、７・・・コック、８・・・撹拌
機、９・・・ポンプ、１０・・・脱水機、１）・・・Ｆ
布、１２・・・受水槽、１３・・・ポンプ、１４・・・
ノズル、１５・・・給水管。
代理人 弁理士 秋 沢 政 光
他２名
ｒ−ｒ＋ｈ＞：八υに型−云ミFIG. 1 is a diagram showing an example of the sludge dehydration treatment method according to the present invention, and FIG. 2 is a diagram showing the relationship between the water-containing sludge temperature and the sludge treatment capacity. DESCRIPTION OF SYMBOLS 1... 1st stirring tank, 2... 2nd stirring tank, 3... Slurry pump, 4... Filter, 5... Steam branch pipe, 6... Steam blowing pipe, 7... Cock, 8... Stirrer, 9... Pump, 10... Dehydrator, 1)...F
Cloth, 12...Water tank, 13...Pump, 14...
Nozzle, 15... Water supply pipe. Agent Patent attorney Masamitsu Aki Sawa and 2 others
Claims (1)
機物を含んだ含水スラッジを脱水するに際し、含水スラ
ッジを貯溜、撹拌する第１工程と、次いで脱水する第２
工程とにより処理する方法において、第１工程で含水ス
ラッジの温度を４０〜７５℃に加熱しながら撹拌し、第
２工程で脱水処理を行ない、かつ脱水後のろ布を４０〜
７５℃の温水にて洗浄することを特徴とするスラッジの
脱水処理方法。(1) When dewatering water-containing sludge containing ultrafine particles with a particle size of 100 μm or less or organic substances such as oil, the first step is to store and stir the water-containing sludge, and the second step is to dehydrate it.
In the first step, the water-containing sludge is stirred while being heated to a temperature of 40 to 75°C, and in the second step, dehydration is performed, and the filter cloth after dehydration is heated to a temperature of 40 to 75°C.
A sludge dewatering method characterized by washing with 75°C hot water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60275604A JPS62136300A (en) | 1985-12-07 | 1985-12-07 | Dehydration treatment of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60275604A JPS62136300A (en) | 1985-12-07 | 1985-12-07 | Dehydration treatment of sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62136300A true JPS62136300A (en) | 1987-06-19 |
Family
ID=17557754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60275604A Pending JPS62136300A (en) | 1985-12-07 | 1985-12-07 | Dehydration treatment of sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62136300A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5214973A (en) * | 1975-07-26 | 1977-02-04 | Nobutsugu Ishii | Method for cleaning filter cloth |
| JPS5362353A (en) * | 1976-11-16 | 1978-06-03 | Kurita Water Ind Ltd | Method for treating coagulated sludge containing protein |
| JPS5710398A (en) * | 1980-06-23 | 1982-01-19 | Ebara Infilco Co Ltd | Treatment of muddy substance |
-
1985
- 1985-12-07 JP JP60275604A patent/JPS62136300A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5214973A (en) * | 1975-07-26 | 1977-02-04 | Nobutsugu Ishii | Method for cleaning filter cloth |
| JPS5362353A (en) * | 1976-11-16 | 1978-06-03 | Kurita Water Ind Ltd | Method for treating coagulated sludge containing protein |
| JPS5710398A (en) * | 1980-06-23 | 1982-01-19 | Ebara Infilco Co Ltd | Treatment of muddy substance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR0152684B1 (en) | Method of crying and cleaning clothes | |
| CN110316896A (en) | Dry reactive coke/charcoal desulphurization denitration rich gas pretreated waste water processing system | |
| JPS62232499A (en) | Method and apparatus for extraction of oily substance from oil seed using ultrasonic wave | |
| CN104449880A (en) | Crude coal gas purifying method and crude coal gas purifying device | |
| CN108671687B (en) | Dry dust removing device and process for steel slag water-containing smoke dust | |
| JPH03126489A (en) | Drying method for pertroleum dry cleaning | |
| CN101906348A (en) | Method for reducing waste engine oil into base oil | |
| JPS62136300A (en) | Dehydration treatment of sludge | |
| US1489347A (en) | Production of iron and steel | |
| US1693417A (en) | Filtering process | |
| CN101285251B (en) | Grease removal treatment device for oil-containing textile fabric and treating method thereof | |
| CN208613256U (en) | Ultrasonic cleaning device | |
| CN112522526A (en) | Method for recovering germanium in wiping auxiliary material in germanium lens processing process | |
| JPH08206691A (en) | Treatment of sludge | |
| CN109022045A (en) | A kind of gas making Heisui River off-flavor elimination technique | |
| CN110642443A (en) | Iron ore smelting system and method and treatment method of chlorine-containing wastewater | |
| JPH05116934A (en) | Process for recovering ammonia or ammonium compound from mixed dust or process for removing its dangerousness | |
| CN214936967U (en) | Be used for fatlute thermal desorption volatile separation recovery system | |
| JP2537304Y2 (en) | Carbon treatment equipment in dry cleaning machines | |
| JPS6315995B2 (en) | ||
| CN109487612B (en) | Treatment system and method for cleaning pulping pollutants | |
| CN204059018U (en) | A kind of totally-enclosed ethene tetrachloride clothe drier of improvement | |
| JPS6336838B2 (en) | ||
| JPH0553726B2 (en) | ||
| JPH0246871Y2 (en) |