JP6196439B2 - Water treatment apparatus and water treatment method for coagulating and filtering suspended water in one tank - Google Patents
Water treatment apparatus and water treatment method for coagulating and filtering suspended water in one tank Download PDFInfo
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Description
本発明は、懸濁水を入れた単一槽に各種凝集剤と、多孔質炭や珪藻土等のろ過助剤を添加し、懸濁水の凝集沈殿とろ過を一槽で行う水処理装置、及び水処理方法に関する。 The present invention relates to a water treatment apparatus in which various flocculants and filter aids such as porous charcoal and diatomaceous earth are added to a single tank containing suspended water, and the water treatment apparatus performs aggregation precipitation and filtration of suspended water in one tank, and water. It relates to the processing method.
従来、懸濁水の凝集、及びろ過を行う水処理装置については、各種の水処理装置が公開されているが、凝集専用の槽と、後段に設置されたろ過専用の槽との、少なくとも２槽以上で構成されている。 Conventionally, various types of water treatment devices have been disclosed for water treatment devices that perform suspension water aggregation and filtration, but at least two tanks, one dedicated to aggregation and the dedicated filtration tank installed in the subsequent stage It consists of the above.
代表的な水処理装置の構成の例を以下に列記する。
凝集沈殿処理 ： （１）凝集反応槽、撹拌機 〜 無機凝集剤＋中和処理
（２）高分子反応槽、撹拌機 〜 高分子凝集剤
（３）沈殿分離槽
ろ過処理 ： （１）ろ過原水槽、移送ポンプ
（２）ろ過器
（３）ろ過処理水槽、逆洗ポンプ
The example of a structure of a typical water treatment apparatus is listed below.
Coagulation sedimentation treatment: (1) Coagulation reaction tank, stirrer-inorganic coagulant + neutralization treatment
(2) Polymer reaction tank, stirrer-polymer flocculant
(3) Precipitation separation tank filtration treatment: (1) Filtration raw water tank, transfer pump
(2) Filter
(3) Filtration water tank, backwash pump
特許文献１では、急速撹拌層、反応槽、及び沈殿槽にて構成される凝集―膜ろ過方法について開示されている。 Patent Document 1 discloses a coagulation-membrane filtration method including a rapid stirring layer, a reaction tank, and a precipitation tank.
特許文献２では、凝集沈殿分離装置と、ろ過装置とで構成される濁水処理システム及びその処理方法について開示されている。 Patent Document 2 discloses a muddy water treatment system including a coagulation sedimentation separation device and a filtration device and a treatment method thereof.
従来の特許文献１、特許文献２の水処理装置は、処理槽を複数有する構成、例えば、沈殿槽、ろ過槽とする構成であるので、構成設備が複数化して製作コストが高くなる、また、可搬使用する場合の装置面積が広くなる等の理由で運搬及び設置コストが高くなるという問題点がある。 Since the conventional water treatment devices of Patent Document 1 and Patent Document 2 are configured to have a plurality of treatment tanks, for example, a sedimentation tank and a filtration tank, a plurality of components are used to increase production costs. There is a problem that the transportation and installation costs increase due to the fact that the device area for portable use increases.
本発明の課題は、コロイド等の微粒子を含む懸濁水の清浄化工程は、凝集剤等による凝集沈殿とフィルター等によるろ過が行われているが、これを一槽で行うことにより、小型で、且つ、急速に浄化を行うことができる、懸濁水の凝集とろ過を一槽で行う水処理装置及び水処理方法を提供することである。 The problem of the present invention is that the process for cleaning suspended water containing fine particles such as colloids is carried out by coagulation sedimentation with a coagulant and filtration with a filter, etc. And it is providing the water treatment apparatus and water treatment method which can perform purification | cleaning rapidly, and perform aggregation and filtration of suspension water by one tank.
本発明の水処理装置は、懸濁水を入れた単一槽に各種凝集剤（塩化第二鉄、ポリ鉄、ＰＡＣ等の無機凝集剤、粉末凝集剤、高分子凝集剤等）で形成する凝集フロックと多孔質炭や珪藻土等のろ過助剤を添加し、空気を送り込みながら撹拌しフロックを生成させる。 The water treatment apparatus of the present invention is a flocculation formed with various flocculants (inorganic flocculants such as ferric chloride, polyiron, PAC, powder flocculants, polymer flocculants, etc.) in a single tank containing suspended water. Add floc and filter aids such as porous charcoal and diatomaceous earth and stir while feeding air to generate floc.
充分にフロックを成長させた後、沈降・静置を行い、上段の１０〜１００μｍ間隙の平行スリット有する筒状フィルター等により懸濁水を吸引ろ過する。次に、底部より空気撹拌を行いながら下段の１０〜１００μｍ間隙の平行スリットを有する筒状フィルター等により懸濁水を吸引ろ過する。次の工程では槽下部より沈降したスラッジの排出を行い、処理工程が完了する。 After sufficiently growing the floc, it is settled and allowed to stand, and the suspended water is suction filtered through a cylindrical filter having parallel slits with a gap of 10 to 100 μm in the upper stage. Next, the suspension water is suction-filtered through a cylindrical filter having parallel slits with a lower gap of 10 to 100 μm while stirring air from the bottom. In the next step, the settled sludge is discharged from the bottom of the tank, and the treatment process is completed.
予定する処理工程が完了したら、再び懸濁水を供給し、凝集処理を開始するが、撹拌手段として筒状フィルターに圧力空気を送り、槽内の撹拌・凝集を行う。その際、筒状フィルターの逆洗が行われる。筒状フィルターは内圧０．３〜０．５ＭＰａで平行スリット幅は２００〜４００μｍに広がり、逆洗される。
尚、筒型フィルター（上・下段）は吊り下げ式として凝集分離槽の構造により水深位置を調整する事で使用が可能なユニットとする。
When the scheduled processing step is completed, the suspension water is supplied again to start the agglomeration process. The agitation process is started, and pressure air is sent to the cylindrical filter as agitation means to agitate / aggregate the tank. At that time, the cylindrical filter is backwashed. The cylindrical filter has an internal pressure of 0.3 to 0.5 MPa and a parallel slit width of 200 to 400 μm, and is backwashed.
The cylindrical filter (upper / lower stage) is a suspension type unit that can be used by adjusting the water depth position according to the structure of the coagulation separation tank.
請求項１に係る発明は、懸濁水を処理する処理槽と、前記懸濁水中の固形物質を凝集させるための凝集剤の供給器と、凝集ろ過助剤の供給器と、前記処理槽の内部に配置された上段ろ過フイルター、及び下段ろ過フイルターとで構成される懸濁水の凝集とろ過を一槽で行う水処理装置であって、前記上段ろ過フイルター、及び下段ろ過フイルターは、吹き込み空気によって、逆洗されることを特徴とする懸濁水の凝集とろ過を一槽で行う水処理装置である。 The invention according to claim 1 is a treatment tank for treating suspension water, a flocculant supplier for aggregating solid substances in the suspension water, a flocculant filter aid feeder, and the interior of the treatment tank. Is a water treatment device that aggregates and filters suspended water composed of an upper filtration filter and a lower filtration filter arranged in one tank, and the upper filtration filter and the lower filtration filter are blown air, It is a water treatment apparatus that performs aggregation and filtration of suspended water in one tank, characterized by being backwashed.
本発明の請求項１の水処理装置によれば、１槽の構成にて、懸濁水を効率良く処理できる水処理装置を提供することができる。 According to the water treatment device of claim 1 of the present invention, it is possible to provide a water treatment device capable of efficiently treating suspended water with a single tank configuration.
本発明によれば、コロイド等の微粒子を含む懸濁水の清浄化工程は、凝集剤等による凝集沈殿とフィルター等によるろ過が行われているが、これを一槽で行うことにより、小型で、且つ、急速に浄化を行うことができる、懸濁水の凝集とろ過を一槽で行う水処理装置及び水処理方法を提供することができる。 According to the present invention, the process of cleaning suspended water containing fine particles such as colloids is carried out by coagulation precipitation with a coagulant and filtration with a filter, etc. Moreover, it is possible to provide a water treatment apparatus and a water treatment method capable of rapidly purifying and aggregating and filtering suspended water in one tank.
本発明の形態１に係る水処理装置は、懸濁水を入れた単一槽に各種凝集剤と、多孔質炭や珪藻土等のろ過助剤を添加し、懸濁水の凝集沈殿とろ過を一槽で行う水処理装置である。本発明の水処理装置の構成は、懸濁水を処理する処理槽と、前記懸濁水を凝集、ろ過するための凝集剤の供給器と、凝集ろ過助剤の供給器と、前記処理槽の内部に配置された上段ろ過フイルター、及び下段ろ過フイルターとで構成される懸濁水の凝集、ろ過を一槽で行う水処理装置であって、前記上段ろ過フイルター、及び下段ろ過フイルターは、吹き込み空気によって、逆洗されることを特徴とする。 The water treatment apparatus according to the first embodiment of the present invention adds various flocculants and filter aids such as porous charcoal and diatomaceous earth to a single tank in which suspended water is added, and aggregates and precipitates suspended water and performs filtration in one tank. It is the water treatment apparatus performed in. The structure of the water treatment apparatus of the present invention includes a treatment tank for treating suspended water, a coagulant supply device for coagulating and filtering the suspension water, a coagulation filter aid supply device, and an interior of the treatment tank. A water treatment device that performs aggregation and filtration of suspended water composed of an upper filtration filter and a lower filtration filter arranged in one tank, and the upper filtration filter and the lower filtration filter are blown air, It is backwashed.
また、前記水処理装置において、懸濁水の凝集、沈殿、ろ過を行う処理槽内は、前記上段ろ過フイルター、及び下段ろ過フイルターの逆洗を兼ねた吹き込み空気によって撹拌されることを特徴とする。 Further, in the water treatment apparatus, the inside of the treatment tank that performs aggregation, precipitation, and filtration of the suspended water is agitated by blown air that also serves as backwashing of the upper filtration filter and the lower filtration filter.
更に、前記水処理装置において、吹き込み空気によって撹拌される処理槽は、片面の底部に傾斜が付けられおり、これにより処理水の対流が円滑に生じ、かつ沈殿物が底部の排出部に集積されることを特徴とする。 Further, in the water treatment apparatus, the treatment tank stirred by the blown air is inclined at the bottom part on one side, whereby convection of the treated water is generated smoothly, and the sediment is accumulated in the discharge part at the bottom part. It is characterized by that.
本発明の形態に係る水処理方法は、懸濁水を処理する処理槽と、前記懸濁水を凝集、ろ過するための凝集剤の供給器と、凝集ろ過助剤の供給器と、前記処理槽の内部に配置された上段ろ過フイルター、及び下段ろ過フイルターとで構成される懸濁水の凝集とろ過を一槽で行う水処理装置であって、多孔質炭、珪藻土を凝集ろ過助剤として用いる水処理方法である。
形態２は、前記水処理装置において、懸濁水の凝集、沈殿、ろ過を行う処理槽内は、前記上段ろ過フイルター、及び下段ろ過フイルターの逆洗を兼ねた吹き込み空気によって撹拌されることを特徴とする形態１記載の懸濁水の凝集とろ過を一槽で行う水処理装置である。
形態３は、前記水処理装置において、吹き込み空気によって撹拌される処理槽は、片面の底部に傾斜が付けられおり、これにより処理水の対流が円滑に生じ、かつ沈殿物が底部の排出部に集積されることを特徴とする形態１または２記載の水処理装置である。
形態４は、懸濁水を処理する処理槽と、前記懸濁水を凝集、ろ過するための凝集剤の供給器と、凝集ろ過助剤の供給器と、前記処理槽の内部に配置された上段ろ過フイルター、及び下段ろ過フイルターとで構成される懸濁水の凝集とろ過を一槽で行う水処理装置であって、多孔質炭、珪藻土を凝集ろ過助剤として用いる水処理方法である。
形態５は、前記上段ろ過フイルター、及び下段ろ過フイルターを、吹き込み空気によって、逆洗することを特徴とする形態４記載の懸濁水の凝集とろ過を一槽で行う水処理方法である。
形態６は、前記水処理方法において、懸濁水の凝集、沈殿、ろ過を行う処理槽内は、前記上段ろ過フイルター、及び下段ろ過フイルターの逆洗を兼ねた吹き込み空気によって撹拌されることを特徴とする形態４または５記載の懸濁水の凝集とろ過を一槽で行う水処理方法である。
形態７は、前記水処理方法において、吹き込み空気によって撹拌される処理槽は、片面の底部に傾斜を付けて、これにより処理水の対流が円滑に生じ、かつ沈殿物が底部の排出部に集積されることを特徴とする形態４ないし６のいすれか１項記載の懸濁水の凝集とろ過を一槽で行う水処理方法である。
形態項２の水処理装置によれば、ろ過フイルターの逆洗を兼ねた吹き込み空気によって槽内が撹拌され、撹拌用の部材が省略できる水処理装置を提供することができる。
形態３の水処理装置によれば、槽は、片面の底部に傾斜が付けられおり、これにより処理水の対流が円滑に生じる水処理装置を提供することができる。
形態４の水処理方法によれば、１槽の構成にて、懸濁水を効率良く処理できる水処理方法を提供することができる。
形態５，６の水処理方法によれば、ろ過フイルターを吹き込み空気によって逆洗することができ、また前記吹き込み空気によって槽内が撹拌され、撹拌用の部材が省略できる、また、空気逆洗によってフィルターより除去された懸濁粒子は、原水と共に次工程で清浄化する水処理方法を提供することができる。
形態７の水処理方法によれば、槽は、片面の底部に傾斜が付けられおり、これにより処理水の対流が円滑に生じる水処理方法を提供することができる。
A water treatment method according to an embodiment of the present invention includes a treatment tank for treating suspension water, a flocculant supply device for agglomerating and filtering the suspension water, a flocculant filtration aid feeder, and the treatment tank. A water treatment device that performs aggregation and filtration of suspended water in a single tank composed of an upper filtration filter and a lower filtration filter disposed therein, and water treatment using porous charcoal and diatomaceous earth as an aggregation filter aid Is the method.
Form 2 is characterized in that, in the water treatment apparatus, the inside of the treatment tank that performs aggregation, precipitation, and filtration of the suspended water is agitated by the blown air that also serves as the back washing of the upper filtration filter and the lower filtration filter. It is a water treatment apparatus which performs aggregation and filtration of suspension water of the form 1 described in 1 tank.
In the third aspect of the present invention, in the water treatment apparatus, the treatment tank agitated by the blown air is inclined at the bottom of one side, whereby convection of the treated water occurs smoothly, and the precipitate is in the discharge part at the bottom. 3. The water treatment apparatus according to Form 1 or 2, wherein the water treatment apparatus is integrated.
Form 4 is a treatment tank for treating suspended water, a flocculant supplier for agglomerating and filtering the suspended water, a flocculant filter aid feeder, and an upper filtration disposed in the treatment tank. This is a water treatment apparatus that performs aggregation and filtration of suspended water composed of a filter and a lower filtration filter in a single tank, and is a water treatment method using porous charcoal and diatomaceous earth as a coagulation filter aid.
Form 5 is a water treatment method in which aggregation and filtration of suspended water according to aspect 4 are performed in a single tank, wherein the upper filtration filter and the lower filtration filter are back-washed with blown air.
Form 6 is characterized in that, in the water treatment method, the inside of the treatment tank that performs aggregation, precipitation, and filtration of the suspended water is agitated by blown air that also serves as backwashing of the upper filtration filter and the lower filtration filter. This is a water treatment method in which aggregation and filtration of suspended water according to Form 4 or 5 are performed in one tank.
Form 7 is the water treatment method, wherein the treatment tank stirred by the blown air is inclined at the bottom of one side, thereby causing convection of the treated water to occur smoothly, and deposits are accumulated in the discharge at the bottom. The water treatment method according to any one of Forms 4 to 6, wherein the suspension water is aggregated and filtered in one tank.
According to the water treatment device of aspect 2, it is possible to provide a water treatment device in which the inside of the tank is agitated by the blown air that also serves as the backwashing of the filtration filter, and the stirring member can be omitted.
According to the water treatment apparatus of aspect 3, the tank can be provided with a water treatment apparatus in which the bottom of one side is inclined, and thereby convection of the treated water is smoothly generated.
According to the water treatment method of aspect 4, it is possible to provide a water treatment method capable of efficiently treating suspended water with a single tank configuration.
According to the water treatment methods of Embodiments 5 and 6, the filtration filter can be backwashed with the blown air, the inside of the tank is stirred by the blown air, and the stirring member can be omitted. It is possible to provide a water treatment method in which suspended particles removed from the filter are cleaned together with raw water in the next step.
According to the water treatment method of aspect 7, the tank can be provided with a water treatment method in which the bottom of one surface is inclined, and thereby convection of the treated water is smoothly generated.
図１は、本発明の水処理装置の実施例の図である。図１は、片面の底部に傾斜が付けらた槽と、上段のろ過フイルターと、下段のろ過フイルターと、スラッジ排出部と、前記上段のろ過フイルターと、下段のろ過フイルターによってろ過された懸濁水を吸引する吸引ポンプと、逆洗、及び槽内撹拌のための空気供給器から構成されている。 FIG. 1 is a diagram of an embodiment of a water treatment apparatus of the present invention. FIG. 1 shows a tank with a sloped bottom on one side, an upper filtration filter, a lower filtration filter, a sludge discharge section, suspended water filtered by the upper filtration filter, and a lower filtration filter. And an air supply device for backwashing and stirring in the tank.
更に、槽の上部には、凝集剤の供給器と、凝集ろ過助剤の供給器とが備えられている。
前記凝集剤は、塩化第二鉄、ポリ鉄、ＰＡＣ等の無機凝集剤、粉末凝集剤、高分子凝集剤等を使用する。また、前記凝集ろ過助剤は、多孔質炭や珪藻土等を使用する。
Further, a flocculant supply device and a flocculant filter aid supply device are provided in the upper part of the tank.
As the flocculant, inorganic flocculants such as ferric chloride, polyiron, PAC, powder flocculants, polymer flocculants and the like are used. The agglomerated filter aid uses porous charcoal or diatomaceous earth.
ここで、懸濁水１０リットルあたり、凝集剤の塩化第二鉄を０．１グラム以上から１０グラム以下の範囲投入し、また凝集ろ過助剤の多孔質炭を１グラム以上から１０グラム以下の範囲投入する。ここで、塩化第二鉄が０．１グラム未満であると、懸濁水の中のコロイド等の微粒子全体を凝集することが不十分となり、１０グラムを超えると、不要な塩化第二鉄が増えるという問題点がある。また、多孔質炭を１グラム未満であると、懸濁水の中のコロイド等の微粒子全体を凝集を促進することが不十分となり、１０グラムを超えると、不要な多孔質炭が増えるという問題点がある。 Here, per 10 liters of suspending water, ferric chloride as a flocculant is charged in a range from 0.1 g to 10 g, and porous coal as a flocculent filter aid is in a range from 1 g to 10 g. throw into. Here, if the ferric chloride is less than 0.1 gram, it is insufficient to agglomerate the entire fine particles such as colloid in the suspension water, and if it exceeds 10 gram, unnecessary ferric chloride increases. There is a problem. Moreover, if the porous charcoal is less than 1 gram, it is insufficient to promote aggregation of the entire fine particles such as colloid in the suspension water, and if it exceeds 10 gram, unnecessary porous charcoal increases. There is.
また、槽の片面の底部には、傾斜が付けられおり、これにより処理水の対流が円滑に生じ、かつ沈殿物が底部の排出部に集積される。前記片面の傾斜の範囲は、水平面に対する角度が、５度以上から３０度以下の範囲で設定される。角度が５度未満であると、空気撹拌の効果が発揮されず、また角度が、３０度を超えると、槽の容積の点で不利となる。 In addition, the bottom of one side of the tank is inclined so that convection of the treated water is generated smoothly and sediment is accumulated in the discharge part at the bottom. The range of the single-sided inclination is set such that the angle with respect to the horizontal plane is in the range of 5 degrees to 30 degrees. If the angle is less than 5 degrees, the effect of air stirring is not exhibited, and if the angle exceeds 30 degrees, it is disadvantageous in terms of the volume of the tank.
図１の水処理装置において、得られるメリットを以下に列記する。
●凝集沈殿とろ過を一槽で行うことができるため、水処理装置がコンパクトにできる。
●フィルター等の目詰まりを処理毎に空気で逆洗でき、逆洗排水は次工程で処理されるので、付帯設備が少ない。
●工程数が少ないため、処理速度の向上ができる。
●槽内でのろ過時においてスラッジの濃縮・減容を行う。
●多孔質の凝集ろ過助剤を用いることで、幅広い粒径の懸濁物質のろ過に適用できる。
●凝集ろ過助剤として多孔質炭を用いた場合、後工程でスラッジの減容化も可能。
●凝集ろ過助剤として多孔質炭を用いると、対象懸濁物が有機物である場合は、乾燥による燃料利用等が可能。
●凝集ろ過助剤として多孔質炭を用いると、対象懸濁物が有機物である場合は、還元滅菌炭化加工による再処理で再生利用等が可能。
Advantages obtained in the water treatment apparatus of FIG. 1 are listed below.
● Because coagulation sedimentation and filtration can be performed in a single tank, the water treatment device can be made compact.
● Filters and other clogs can be backwashed with air for each treatment, and backwash wastewater is treated in the next process, so there are few incidental facilities.
● Since the number of processes is small, processing speed can be improved.
● Concentrate and reduce the volume of sludge during filtration in the tank.
● By using a porous coagulation filter aid, it can be applied to the filtration of suspended substances with a wide range of particle sizes.
● When porous coal is used as a coagulation filter aid, sludge volume can be reduced in the subsequent process.
● If porous charcoal is used as the coagulation filter aid, if the target suspension is organic, fuel can be used by drying.
● When porous charcoal is used as an agglomeration filter aid, if the target suspension is organic, it can be reused by reprocessing by reductive sterilization carbonization.
図２は、本発明の実施例の水処理装置の処理工程の説明の図である。懸濁水を入れた単一槽に各種凝集剤（塩化第二鉄、ポリ鉄、ＰＡＣ等の無機凝集剤、粉末凝集剤、高分子凝集剤等）で形成する凝集フロックと、多孔質炭や珪藻土等のろ過助剤を添加し、空気を送り込みながら撹拌しフロッグを生成させる。 FIG. 2 is a diagram for explaining the treatment process of the water treatment apparatus according to the embodiment of the present invention. Flocculation flocs formed with various flocculants (inorganic flocculants such as ferric chloride, polyiron, PAC, powder flocculants, polymer flocculants, etc.), porous charcoal and diatomaceous earth in a single tank containing suspended water Add a filter aid such as etc., and stir while feeding air to produce a frog.
充分にフロックを成長させた後、沈降・静置を行い、上段の１０〜１００μｍ間隙の平行スリット有する筒状フィルター等により懸濁水を吸引ろ過する。次に、底部より空気撹拌を行いながら下段の１０〜１００μｍ間隙の平行スリットを有する筒状フィルター等により懸濁水を吸引ろ過する。次の工程では槽下部より沈降したスラッジの排出を行い、処理工程が完了する。 After sufficiently growing the floc, it is settled and allowed to stand, and the suspended water is suction filtered through a cylindrical filter having parallel slits with a gap of 10 to 100 μm in the upper stage. Next, the suspension water is suction-filtered through a cylindrical filter having parallel slits with a lower gap of 10 to 100 μm while stirring air from the bottom. In the next step, the settled sludge is discharged from the bottom of the tank, and the treatment process is completed.
予定する処理工程が完了したら、再び懸濁水を供給し、凝集処理を開始するが、撹拌手段として筒状フィルターに圧力空気を送り、槽内の撹拌・凝集を行う。その際、筒状フィルターの逆洗が行われる。筒状フィルターは内圧０．３〜０．５ＭＰａで平行スリット幅は２００〜４００μｍに広がり、逆洗される。尚、筒型フィルター（上・下段）は吊り下げ式として凝集分離槽の構造により水深位置を調整する事で使用が可能なユニットとする。 When the scheduled processing step is completed, the suspension water is supplied again to start the agglomeration process. The agitation process is started, and pressure air is sent to the cylindrical filter as agitation means to agitate / aggregate the tank. At that time, the cylindrical filter is backwashed. The cylindrical filter has an internal pressure of 0.3 to 0.5 MPa and a parallel slit width of 200 to 400 μm, and is backwashed. The cylindrical filter (upper / lower stage) is a suspension type unit that can be used by adjusting the water depth position according to the structure of the coagulation separation tank.
補足事項について、以下列記する。
＊１ 無機凝集剤を使用した場合は添加率によって中和処理が必要となる。
尚、フロックの沈降促進を促す為に高分子剤を使用する。
＊２ 粉末又は液体凝集剤は中和処理が不要である。
＊３ ろ過助剤はろ過精度を上げる場合に使用する。（処理水濁度の低減）
懸濁水中のスラッジが少ない場合はろ過助剤の再利用が可能。
＊４ 下段ろ過はスラッジの濃縮を行い、スラッジ量の減容を行うのが目的である。
濃縮スラッジは土嚢袋等で受ける事で簡易脱水を行い、更に減容化する。
The supplementary items are listed below.
* 1 When an inorganic flocculant is used, neutralization treatment is required depending on the addition rate.
In addition, a polymer agent is used to promote sedimentation of flocs.
* 2 Neutralization treatment is not required for powder or liquid flocculants.
* 3 A filter aid is used to increase filtration accuracy. (Reduction of treated water turbidity)
When there is little sludge in the suspension water, the filter aid can be reused.
* 4 The purpose of lower filtration is to concentrate sludge and reduce the volume of sludge.
Concentrated sludge is dehydrated by receiving it in sandbags, etc. to further reduce the volume.
（まとめ）
本発明の凝集・ろ過一体型装置では従来技術と比較して付帯装置が少なく、小型化が可能で有り、可搬使用する上で有効で有る。ろ過器としては砂ろ過器、市販のフィルター（カートリッジ式、膜型等）と比較してろ過精度は劣るが、ろ過材の内部進入が少ない当装置は逆洗によりろ過速度の劣化は無く、空気逆洗により水も使わず、逆洗排水も出ない。
(Summary)
The coagulation / filtration integrated device of the present invention has fewer auxiliary devices than the prior art, can be miniaturized, and is effective for portable use. The filtration accuracy is inferior to sand filters and commercially available filters (cartridge type, membrane type, etc.) as filters, but this device has little filter medium intrusion, so there is no deterioration in filtration speed due to backwashing and air Backwash does not use water, and backwash drainage does not come out.
本発明の懸濁水の凝集とろ過を一槽で行う水処理装置、及び水処理方法によれば、小型で、且つ、急速に浄化を行うことができる水処理装置および水処理方法を提供でき、各種の汚染物質の除去、特に放射性物質の除去などに、有効である。 According to the water treatment apparatus and the water treatment method for aggregating and filtering the suspension water of the present invention, it is possible to provide a water treatment apparatus and a water treatment method that are small and can be purified quickly. It is effective for removing various pollutants, especially radioactive materials.
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| US3190449A (en) * | 1956-06-11 | 1965-06-22 | Hans Mueller | Filter apparatus |
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| JPH04244205A (en) * | 1991-01-29 | 1992-09-01 | Shinko Pantec Co Ltd | High speed filtration device |
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