JP4004015B2 - Method and apparatus for adding fibrous drug and solid-liquid separation or dehydration method - Google Patents

Method and apparatus for adding fibrous drug and solid-liquid separation or dehydration method Download PDF

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JP4004015B2
JP4004015B2 JP2001104467A JP2001104467A JP4004015B2 JP 4004015 B2 JP4004015 B2 JP 4004015B2 JP 2001104467 A JP2001104467 A JP 2001104467A JP 2001104467 A JP2001104467 A JP 2001104467A JP 4004015 B2 JP4004015 B2 JP 4004015B2
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fibrous
solid
liquid separation
drug
dehydration
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JP2002301307A (en
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乃大 矢出
一 関
重雄 安武
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Ebara Corp
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Ebara Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、繊維状薬剤の添加方法に係り、特に、下水、し尿、産業排水等の排水処理方法や、それらに伴って発生する有機性汚泥、無機性汚泥、余剰汚泥、濃縮汚泥や生ごみ等の有機性廃棄物を、固液分離又は脱水処理する際に用いる繊維状薬剤の添加方法と装置及び固液分離又は脱水処理方法に関する。
【０００２】
【従来の技術】
下水、し尿、産業排水等の排水処理に伴って発生する汚泥や、生ごみ等の有機性廃棄物を処理処分するには、脱水処理は不可欠である。
下水、し尿、産業排水等の排水処理では、処理対象が有機性汚濁物であるために、活性汚泥法が主流であるが、前処理や後処理に固形物除去などのために凝集沈殿処理や浮上処理も使われている。凝集沈殿処理や浮上処理による固液分離においては、汚濁物の吸着や沈殿物の沈降性改善のために、無機凝集剤と共に繊維状薬剤が使われている。
また、汚泥等の脱水方法においても、繊維状薬剤が有機高分子凝集剤あるいは有機高分子凝集剤と無機凝集剤と共に使用されている。
従来の繊維状薬剤は、その長さ０、５〜３０ｍｍの短繊維の集合体であり、嵩張ったり、添加時に粉塵が発生したり、添加時に定量供給が困難であるという問題があった。
【０００３】
【発明が解決しようとする課題】
本発明は、上記従来技術の問題点を解消し、粉塵の発生を抑え、作業性を改善し、定量供給を可能にした固液分離や脱水処理における繊維状薬剤の添加方法と装置及び固液分離又は脱水処理方法を提供することを課題とする。
【０００４】
【課題を解決するための手段】
上記課題を解決するために、本発明では、固液分離又は脱水処理を行う被処理物に繊維状薬剤を添加する方法において、該添加する繊維状薬剤は、被処理物に添加する直前に化学合成繊維で切断されていない状態の複数本の繊維集合体を切断して製造することを特徴とする繊維状薬剤の添加方法、及び、固液分離又は脱水処理を行う被処理物に繊維状薬剤を添加する装置において、繊維集合体の重量測定装置と、化学合成繊維で切断されていない状態の複数本の繊維集合体を切断して繊維状薬剤を製造する装置と、切断して製造された繊維状薬剤を直ちに被処理物と混合する装置とから構成されることを特徴とする繊維状薬剤の添加装置としたものである。
また、本発明では、固液分離又は脱水処理を行う被処理物に繊維状薬剤を添加し、固液分離又は脱水処理する方法において、被処理物に添加する直前に化学合成繊維で切断されていない状態の複数本の繊維集合体を切断して繊維状薬剤を製造し、前記被処理物に該製造した繊維状薬剤を添加して混合し、混合後の被処理物を固液分離又は脱水処理することを特徴とする固液分離又は脱水処理方法としたものである。
さらに、本発明では、被処理物に添加する化学合成繊維で切断されていない状態の複数本の繊維集合体を計量した後、切断装置で切断して繊維状薬剤を製造し、前記被処理物に該製造した繊維状薬剤を直ちに添加して混合し、混合後の被処理物を固液分離又は脱水処理する方法において、前記繊維状薬剤の添加率を前記切断装置へ送る前記繊維集合体の送り速度を調節することにより変更することを特徴とする固液分離又は脱水処理方法としたものである。
前記において、繊維状薬剤は、ペットボトルから得られた繊維を原料とすることができる。
前記処理方法において、被処理物には、製造した繊維状薬剤と共に無機凝集剤及び／又は有機高分子凝集剤を添加して混合することができる。
【０００５】
【発明の実施の形態】
次に、本発明を詳細に説明する。
本発明は、被処理物に繊維状薬剤を添加して、固液分離や脱水処理を行う方法において添加直前に繊維を切断して製造した繊維状薬剤を被処理物に添加する繊維状薬剤の添加方法である。
より具体的には、本発明は、排水や汚水などの被処理物に繊維状薬剤、又は繊維状薬剤と無機凝集剤、又は繊維状薬剤と有機高分子凝集剤、又は繊維状薬剤と無機凝集剤と有機高分子凝集剤を添加して、凝集させた凝集物を排水処理の沈殿部で固液分離したり、脱水処理する方法である。
繊維状薬剤の添加順序は、被処理物に繊維状薬剤を添加混合あるいは、被処理物に繊維状薬剤と無機凝集剤を添加混合し、固液分離したり脱水処理する。又は、被処理物に繊維状薬剤を添加混合したのちに、有機高分擬集剤を添加する。又は、被処理物に繊維状薬剤と無機凝集剤を添加混合したのちに、有機高分子凝集剤を添加する。
【０００６】
本発明で原料として用いる繊維は、化学合成繊維で、切断されていない状態のもので、寝具の綿や断熱材に使用される長繊維を含む。本発明の繊維は、好ましくは複数本の繊維が、ロール状に巻き取られた繊維の集合体である。
本発明の繊維状薬剤は、好ましくは、化学繊維製造工程から廃棄される繊維、ＰＥＴボトルから得られる繊維等であり、その形状は、太さが数μｍ〜１ｍｍ、長さが数ｍｍ〜数ｃｍである。被処理物との混合性を考慮すると、その長さは数ｍｍ〜１ｃｍが好適である。
切断された繊維状薬剤は、直ちに被処理物と混合される。
排水処理における凝集沈殿処理や脱水処理における凝集剤は、従来のように有機性の高分子凝集剤や無機性凝集剤が併用できる。
【０００７】
工業用水や脱水施設で容易に得られる処理水又は汚泥そのものにより、繊維状薬剤をスラリー状にしてから被処理物に添加することもできる。
排水処理における固液分離方法は、重力沈殿、スクリーン分離、遠心分離などの機械分離、浮上方法などである。
脱水処理における脱水機は、ベルトプレス型やスクリュープレス型、遠心分離、フィルタープレス型いずれも使用できる。
繊維状薬剤の被処理物への添加率は、排水処理の固液分離では、処理液量あたり１０〜数１０００ｍｇ／ｌ、脱水処理では、スラリーあたり０．０５〜１％である。
【０００８】
排水処理の固液分離への添加率は、１０ｍｇ／ｌ未満では固液分離性能が悪化し、数１０００ｍｇ／ｌを越えると、汚泥発生量が増加したり、薬剤コストが増加する。脱水処理では、０．０５％未満では、脱水性能が悪く、１％を越えると、コスト的な問題が生じる。
繊維状薬剤の添加量は、切断前の繊維重量変化をロードセルで検知し、添加重量を積算する方法や繊維長さから求める。固液分離の場合、単位時間あたりのロードセルによる重量変化量を、処理流量で割った値や、単位時間あたりの繊維集合体の使用長さから計算した繊維使用量を、処理流量で割った値が、繊維状薬剤の添加率である。
脱水処理においても、同様に重量変化量や繊維使用量を、処理汚泥量中のＴＳ（全固形物）で割った値が、繊維状薬剤の添加率である。
【０００９】
図１と図２に、本発明の繊維状薬剤の添加装置を有する被処理物のフロー工程図を示す。図１は、排水中の固形分を分離して処理水を得るフロー工程図であり、図２は、汚泥を処理して脱水ケーキと分離水を得るフロー工程図である。
繊維状薬剤は、定量供給される繊維集合体を繊維の切断装置で切断して製造され、混合する装置に投入されて被処理物と混合される。
繊維を切断する装置は、ロータリーカッターやギロチンカッターのような市販されている切断装置が使用できる。
繊維状薬剤の添加率の変更は、繊維集合体から切断装置へ送る繊維の送り速度を調整することにより可能である。
切断された繊維状薬剤を被処理物と混合する装置は、撹拌機などの機械撹拌や空気撹拌装置、ラインミキサーも使用できる。排水処理の固液分離や脱水処理における繊維状薬剤の混合は、いずれも撹拌機などの機械撹拌装置が望ましい。
【００１０】
【実施例】
以下に、本発明を実施例により具体的に説明する。
実施例１
図１のフロー工程図に従い、処理水量約１００リットル／時、ＳＳ濃度が５０ｍｇ／ｌの活性汚泥処理水を対象に、繊維状薬剤を所定量添加し、アニオン系高分子凝集剤を処理流量あたり０．５ｍｇ／ｌ添加、凝集させた後、水面積負荷が約３０ｍ3／ｍ2日の重力沈殿槽にて固液分離した。処理水のＳＳ濃度を測定し、繊維状薬剤の効果を確認した。
用いた繊維状薬剤は、ペットボトルから再生した太さ２０μｍのポリエステル繊維を予め、長さを１０ｍｍに切断した繊維状薬剤Ａと、添加前に切断した繊維状薬剤Ｂについて試験した。予め、切断した繊維状薬剤Ａは、スクリューフィーダーで定量的に汚泥に供給した。
【００１１】
表１に実施例１の結果を示す。ａ−１〜ａ−３は比較例であり、本発明の実施例はｂ−１、ｂ−２である。
予め切断した繊維状薬剤Ａは、繊維状薬剤を安定供給するのが難しく、処理水ＳＳ濃度が繊維状薬剤Ｂに比べて高い値になった。
【表１】

Figure 0004004015
【００１２】
実施例２
図２のフロー工程図に従い、下水混合汚泥に繊維状薬剤を所定量添加し、カチオン系高分子凝集剤を対ＴＳあたり１．０％添加、凝集させた後、ベルトプレス型脱水機で脱水処理した。表２に用いた混合汚泥の性状を示す。
【表２】
Figure 0004004015
繊維状薬剤は、ペットボトルから再生した太さ２μｍ繊維で、予め、長さを１０ｍｍに切断した繊維状薬剤Ａと、添加前に切断した繊維状薬剤Ｂについて試験した。予め、切断した繊維状薬剤Ａは、スクリューフイーダーで定量的に汚泥に供給した。
表３にベルトプレス型脱水機の運転条件を示す。
【表３】
Figure 0004004015
【００１３】
表４に実施例２の結果を示す。ａ−１〜ａ−３は比較例であり、ｂ−１、ｂ−２が本発明の実施例である。添加直前で切断した繊維状薬剤Ｂを使用することにより、予め切断された繊維状薬剤よりやや含水率が低く、本発明の実用性が実証された。
【表４】
Figure 0004004015
【００１４】
【発明の効果】
本発明によれば、以下の効果を奏することができる。
（１）粉塵の発生が抑えられて、作業環境や作業性が改善される。
（２）繊維状薬剤貯留槽がコンパクトになる。
（３）切り出し量が安定して適正な繊維状薬剤が被処理物に添加でき、処理の安定化や薬剤コストが低減できる。
【図面の簡単な説明】
【図１】本発明の繊維状薬剤の添加方法を用いた排水の処理方法のフロー工程図。
【図２】本発明の繊維状薬剤の添加方法を用いた汚泥の脱水方法のフロー工程図。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for adding fibrous chemicals, and in particular, wastewater treatment methods such as sewage, human waste and industrial wastewater, and organic sludge, inorganic sludge, surplus sludge, concentrated sludge and garbage generated along with them. TECHNICAL FIELD The present invention relates to a method and an apparatus for adding a fibrous drug used for solid-liquid separation or dehydration treatment of organic waste such as, and a solid-liquid separation or dehydration treatment method .
[0002]
[Prior art]
Dehydration is indispensable in order to treat and dispose of sludge generated from wastewater treatment such as sewage, human waste, and industrial wastewater, and organic waste such as garbage.
In wastewater treatment such as sewage, human waste, and industrial wastewater, the activated sludge method is the mainstream because the treatment target is organic pollutant. Levitation treatment is also used. In solid-liquid separation by coagulation sedimentation treatment or flotation treatment, a fibrous chemical is used together with an inorganic coagulant for the purpose of adsorbing contaminants and improving sedimentation properties of the sediment.
Also, in a dewatering method such as sludge, a fibrous chemical is used together with an organic polymer flocculant or an organic polymer flocculant and an inorganic flocculant.
Conventional fibrous drugs are aggregates of short fibers having a length of 0 to 5 to 30 mm, and have problems that they are bulky, dust is generated during addition, and quantitative supply is difficult during addition.
[0003]
[Problems to be solved by the invention]
The present invention is described above to solve the prior art problems, suppress the generation of dust, to improve the workability, addition method and apparatus and the solid-liquid fibrous drug in solid-liquid separation and dehydration treatment that enables dispensing It is an object to provide a separation or dehydration method .
[0004]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, in a method of adding a fibrous chemical to a treatment object to be subjected to solid-liquid separation or dehydration treatment, the fibrous chemical to be added is chemically added immediately before being added to the treatment object. the method of adding the fibrous agent, characterized in that to produce by cutting a plurality of fiber assemblies in a state of not being cut with synthetic fibers, and fibrous drug treatment object to perform solid-liquid separation or dehydration treatment A device for measuring the weight of a fiber assembly, a device for manufacturing a fibrous drug by cutting a plurality of fiber assemblies not cut with chemically synthesized fibers, and a device for cutting An apparatus for adding a fibrous drug is characterized by comprising a device that immediately mixes a fibrous drug with an object to be treated.
Further , in the present invention, in the method of adding a fibrous chemical to an object to be subjected to solid-liquid separation or dehydration, and solid-liquid separation or dehydration, it is cut with chemically synthesized fibers immediately before adding to the object to be processed. A fibrous drug is produced by cutting a plurality of fiber aggregates in a non-existing state , and the produced fibrous drug is added to the object to be treated and mixed, and the object to be treated after mixing is subjected to solid-liquid separation or dehydration This is a solid-liquid separation or dehydration method characterized by processing.
Furthermore, in the present invention, after measuring a plurality of fiber aggregates that are not cut with chemically synthesized fibers added to the object to be processed, a fiber medicine is manufactured by cutting with a cutting device, and the object to be processed In the method of immediately adding and mixing the produced fibrous drug to the mixture, and solid-liquid separating or dehydrating the processed material after mixing, the addition rate of the fibrous drug is sent to the cutting device. The solid-liquid separation or dehydration method is characterized by changing the feed rate by adjusting the feed rate.
In the above, the fibrous drug can be made from fibers obtained from PET bottles.
In the said processing method, an inorganic flocculant and / or an organic polymer flocculant can be added and mixed with the manufactured fibrous chemical | medical agent to the to-be-processed object.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail.
The present invention relates to a method of adding a fibrous drug to a material to be processed and then adding the fibrous drug produced by cutting the fiber immediately before the addition in a method of solid-liquid separation or dehydration to the object to be processed. It is an addition method.
More specifically, the present invention relates to an object to be treated such as waste water or sewage, in the form of a fibrous drug, or a fibrous drug and an inorganic flocculant, or a fibrous drug and an organic polymer flocculant, or a fibrous drug and an inorganic flocculant. In this method, an agglomerate and an organic polymer flocculant are added, and the agglomerated aggregate is subjected to solid-liquid separation or dehydration treatment in a sedimentation part of wastewater treatment.
The order of adding the fibrous drug is to add and mix the fibrous drug to the object to be processed, or to add and mix the fibrous drug and the inorganic flocculant to the object to be processed, followed by solid-liquid separation or dehydration. Or after adding and mixing a fibrous chemical | medical agent to a to-be-processed object, an organic high content pseudo-collecting agent is added. Or after adding and mixing a fibrous chemical | medical agent and an inorganic flocculant to a to-be-processed object, an organic polymer flocculant is added.
[0006]
The fiber used as a raw material in the present invention is a chemically synthesized fiber that is not cut, and includes long fibers used for cotton and heat insulating materials for bedding. The fiber of the present invention is preferably an aggregate of fibers in which a plurality of fibers are wound in a roll shape.
The fibrous drug of the present invention is preferably a fiber discarded from a chemical fiber production process, a fiber obtained from a PET bottle, etc., and the shape is several μm to 1 mm in thickness and several mm to several in length. cm. Considering the mixing property with the workpiece, the length is preferably several mm to 1 cm.
The cut fibrous drug is immediately mixed with the workpiece.
As the coagulant in the coagulation / sedimentation process and the dehydration process in the waste water treatment, an organic polymer coagulant and an inorganic coagulant can be used in combination as in the past.
[0007]
The fibrous chemical can be made into a slurry form by using industrial water or treated water or sludge itself easily obtained in a dehydration facility and then added to the object to be treated.
Solid-liquid separation methods in wastewater treatment include mechanical separation such as gravity precipitation, screen separation, and centrifugal separation, and a floating method.
As the dehydrator in the dehydration treatment, any of a belt press type, a screw press type, a centrifugal separator, and a filter press type can be used.
The addition rate of the fibrous chemical to the object to be treated is 10 to several thousand mg / l per treatment liquid amount in the solid-liquid separation of the wastewater treatment, and 0.05 to 1% per slurry in the dehydration treatment.
[0008]
When the addition rate to the solid-liquid separation of the waste water treatment is less than 10 mg / l, the solid-liquid separation performance deteriorates, and when it exceeds several thousand mg / l, the amount of sludge generated increases and the chemical cost increases. In the dehydration treatment, if it is less than 0.05%, the dehydration performance is poor, and if it exceeds 1%, a cost problem occurs.
The amount of fibrous drug added is determined from a method of detecting the change in fiber weight before cutting with a load cell and integrating the added weight and the fiber length. In the case of solid-liquid separation, the value obtained by dividing the change in weight by the load cell per unit time by the treatment flow rate, or the value obtained by dividing the fiber use amount calculated from the length of the fiber aggregate used per unit time by the treatment flow rate. Is the rate of addition of fibrous drug.
Similarly, in the dehydration treatment, the value obtained by dividing the amount of change in weight and the amount of fiber used by the TS (total solids) in the amount of treated sludge is the addition rate of the fibrous drug.
[0009]
FIG. 1 and FIG. 2 show a flow process diagram of an object to be processed having the fibrous drug adding device of the present invention. FIG. 1 is a flow process diagram for separating treated solids to obtain treated water, and FIG. 2 is a flow process diagram for treating sludge to obtain dehydrated cake and separated water.
The fibrous drug is manufactured by cutting a fiber assembly supplied in a fixed amount with a fiber cutting device, and is put into a mixing device and mixed with an object to be processed.
A commercially available cutting device such as a rotary cutter or a guillotine cutter can be used as the device for cutting the fibers.
The addition rate of the fibrous drug can be changed by adjusting the feeding speed of the fiber sent from the fiber assembly to the cutting device.
As an apparatus for mixing the cut fibrous drug with an object to be processed, mechanical agitation such as a stirrer, an air agitation apparatus, or a line mixer can also be used. A mechanical stirrer such as a stirrer is desirable for mixing the liquid chemicals in the solid-liquid separation in the waste water treatment and the dehydration treatment.
[0010]
【Example】
Hereinafter, the present invention will be specifically described by way of examples.
Example 1
In accordance with the flow process diagram of FIG. 1, a predetermined amount of fibrous chemical is added to activated sludge treated water with a treated water volume of about 100 liters / hour and an SS concentration of 50 mg / l, and an anionic polymer flocculant is added per treated flow rate. After 0.5 mg / l was added and agglomerated, solid-liquid separation was performed in a gravity precipitation tank having a water area load of about 30 m 3 / m 2 . The SS concentration of treated water was measured, and the effect of the fibrous drug was confirmed.
The fibrous drug used was tested on a fibrous drug A that had been cut from a polyester fiber having a thickness of 20 μm regenerated from a PET bottle in advance to a length of 10 mm, and a fibrous drug B that had been cut before addition. The fibrous drug A cut in advance was quantitatively supplied to the sludge with a screw feeder.
[0011]
Table 1 shows the results of Example 1. a-1 to a-3 are comparative examples, and examples of the present invention are b-1 and b-2.
The fibrous drug A cut in advance was difficult to stably supply the fibrous drug, and the treated water SS concentration was higher than that of the fibrous drug B.
[Table 1]
Figure 0004004015
[0012]
Example 2
According to the flow process diagram of FIG. 2, after adding a predetermined amount of fibrous chemical to the sewage mixed sludge, adding 1.0% of cationic polymer flocculant per TS and coagulating, then dewatering with a belt press type dehydrator did. Table 2 shows the properties of the mixed sludge used.
[Table 2]
Figure 0004004015
The fibrous drug was a 2 μm-thick fiber regenerated from a PET bottle, and the fibrous drug A that had been cut to a length of 10 mm in advance and the fibrous drug B that had been cut before addition were tested. The fibrous drug A cut in advance was quantitatively supplied to the sludge with a screw feeder.
Table 3 shows the operating conditions of the belt press type dehydrator.
[Table 3]
Figure 0004004015
[0013]
Table 4 shows the results of Example 2. a-1 to a-3 are comparative examples, and b-1 and b-2 are examples of the present invention. By using the fibrous drug B cut just before the addition, the water content was slightly lower than that of the previously cut fibrous drug, thus demonstrating the practicality of the present invention.
[Table 4]
Figure 0004004015
[0014]
【The invention's effect】
According to the present invention, the following effects can be obtained.
(1) The generation of dust is suppressed, and the work environment and workability are improved.
(2) The fibrous drug reservoir is compact.
(3) The amount of cut out is stable and an appropriate fibrous drug can be added to the object to be processed, so that the process can be stabilized and the drug cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a flow process diagram of a wastewater treatment method using the method for adding a fibrous drug of the present invention.
FIG. 2 is a flow process diagram of a method for dewatering sludge using the method for adding a fibrous drug of the present invention.

Claims (6)

固液分離又は脱水処理を行う被処理物に繊維状薬剤を添加する方法において、該添加する繊維状薬剤は、被処理物に添加する直前に化学合成繊維で切断されていない状態の複数本の繊維集合体を切断して製造することを特徴とする繊維状薬剤の添加方法。In the method of adding a fibrous drug to an object to be solid-liquid separated or dehydrated, the fibrous drug to be added is a plurality of fibers that are not cut with chemically synthesized fibers immediately before being added to the object to be processed. A method for adding a fibrous drug, which is produced by cutting a fiber assembly . 固液分離又は脱水処理を行う被処理物に繊維状薬剤を添加する装置において、繊維集合体の重量測定装置と、化学合成繊維で切断されていない状態の複数本の繊維集合体を切断して繊維状薬剤を製造する装置と、切断して製造された繊維状薬剤を直ちに被処理物と混合する装置とから構成されることを特徴とする繊維状薬剤の添加装置。In an apparatus for adding a fibrous drug to an object to be subjected to solid-liquid separation or dehydration processing, a fiber aggregate weight measuring device and a plurality of fiber aggregates that are not cut with chemically synthesized fibers are cut. An apparatus for adding a fibrous drug, comprising: an apparatus for producing a fibrous drug; and an apparatus for immediately mixing a fibrous drug produced by cutting with an object to be processed. 固液分離又は脱水処理を行う被処理物に繊維状薬剤を添加し、固液分離又は脱水処理する方法において、被処理物に添加する直前に化学合成繊維で切断されていない状態の複数本の繊維集合体を切断して繊維状薬剤を製造し、前記被処理物に該製造した繊維状薬剤を添加して混合し、混合後の被処理物を固液分離又は脱水処理することを特徴とする固液分離又は脱水処理方法。In the method of adding a fibrous chemical to a workpiece to be subjected to solid-liquid separation or dehydration treatment, and performing solid-liquid separation or dehydration treatment, a plurality of pieces that are not cut with chemically synthesized fibers immediately before being added to the workpiece A fibrous drug is produced by cutting a fiber assembly , and the produced fibrous drug is added to and mixed with the object to be treated, and the object to be treated is subjected to solid-liquid separation or dehydration. Solid-liquid separation or dehydration method. 被処理物に添加する化学合成繊維で切断されていない状態の複数本の繊維集合体を計量した後、切断装置で切断して繊維状薬剤を製造し、前記被処理物に該製造した繊維状薬剤を直ちに添加して混合し、混合後の被処理物を固液分離又は脱水処理する方法において、前記繊維状薬剤の添加率を前記切断装置へ送る前記繊維集合体の送り速度を調節することにより変更することを特徴とする固液分離又は脱水処理方法。After weighing a plurality of fiber aggregates that are not cut with chemically synthesized fibers added to the object to be processed, a fiber medicine is manufactured by cutting with a cutting device, and the manufactured fiber state is applied to the object to be processed. In the method of immediately adding and mixing the chemicals, and performing solid-liquid separation or dehydration treatment of the processed material after mixing, adjusting the feeding rate of the fiber assembly that sends the addition rate of the fibrous chemicals to the cutting device A solid-liquid separation or dehydration method characterized in that it is changed by 前記繊維状薬剤は、ペットボトルから得られた繊維を原料とするものであることを特徴とする請求項４に記載の固液分離又は脱水処理方法。The solid-liquid separation or dehydration method according to claim 4, wherein the fibrous drug is made from fibers obtained from a PET bottle. 前記被処理物には、製造した繊維状薬剤と共に無機凝集剤及び／又は有機高分子凝集剤を添加して混合することを特徴とする請求項３、４又は５記載の固液分離又は脱水処理方法。6. The solid-liquid separation or dehydration treatment according to claim 3 , wherein an inorganic flocculant and / or an organic polymer flocculant is added to and mixed with the manufactured fibrous agent. Method.
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