JPH06226265A - Decolorization treatment of colored waste water - Google Patents
Decolorization treatment of colored waste waterInfo
- Publication number
- JPH06226265A JPH06226265A JP1463093A JP1463093A JPH06226265A JP H06226265 A JPH06226265 A JP H06226265A JP 1463093 A JP1463093 A JP 1463093A JP 1463093 A JP1463093 A JP 1463093A JP H06226265 A JPH06226265 A JP H06226265A
- Authority
- JP
- Japan
- Prior art keywords
- colored
- treatment
- waste water
- wastewater
- decolorization
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、果汁、ジュース、コー
ヒー、茶、清涼飲料水等の着色飲料水、あるいは絵具等
の着色料を含む着色水等の着色排水を廃棄処理する際に
おいて、着色排水中に含まれるコロイド状着色物質等の
着色分を脱色処理する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to coloring of colored drinking water such as fruit juice, juice, coffee, tea, soft drinks, etc., or colored waste water such as colored water containing coloring agents such as paints. The present invention relates to a method for decolorizing a colored component such as a colloidal coloring substance contained in wastewater.
【０００２】[0002]
【従来の技術】通常、飲料水等の排水は、色素成分ある
いは色素成分を含有する微粒状の物質が浮遊状態で混入
した着色排水である場合が多く、このような排水を活性
汚泥処理方式等の適宜排水処理方式にて汚染物質を除去
して排水処理することにより、処理した着色排水の汚染
度（排水汚染度を表すＢＯＤやＣＯＤ、あるいはＳＳ等
の数値）をある一定水準に維持することは技術的に可能
である。2. Description of the Related Art Usually, wastewater such as drinking water is often colored wastewater in which a pigment component or a fine-grained substance containing a pigment component is mixed in a floating state, and such wastewater is treated by an activated sludge treatment method or the like. To maintain the pollution degree of treated colored wastewater (values such as BOD, COD, or SS indicating the wastewater pollution degree) at a certain level by removing pollutants by appropriate wastewater treatment method Is technically possible.
【０００３】しかし、上記のような排水処理方式では、
着色排水中の色素成分はある程度まで除去できても、残
留色素分は４００倍〜６００倍近くあって着色排水を脱
色することは困難であり、また、このような着色排水を
脱色せずにそのまま河川等に排水して放流することは、
河川の汚損に繋がる。However, in the wastewater treatment system as described above,
Even if the pigment component in the colored wastewater can be removed to some extent, it is difficult to decolorize the colored wastewater because the residual pigment content is about 400 to 600 times, and the colored wastewater as it is without being decolorized. Draining into rivers and discharging
This will lead to river pollution.
【０００４】そこで従来は、図３に示すように、着色排
水を曝気処理して沈澱物（スラッジ）を生成することに
よって、着色排水中に含まれる汚染物質を沈澱物として
除去し、ＢＯＤ、ＣＯＤ、ＳＳ等の汚染度を一定基準ま
で低下させて、その後、生成された沈澱物と処理排水と
を固液分離して得られる処理排水中に、還元漂白剤とし
て次亜塩素酸ソーダ（ＮａＣｌＯ）を注入して処理排水
を脱色したり、砂などの濾過材に導入したり、活性炭吸
着処理した後に河川等に放流している。Therefore, conventionally, as shown in FIG. 3, the colored waste water is subjected to aeration treatment to generate a precipitate (sludge), whereby contaminants contained in the colored waste water are removed as a precipitate, and BOD and COD are obtained. , SS, etc. are reduced to a certain level, and then the generated precipitate and the treated wastewater are subjected to solid-liquid separation to obtain a treated effluent containing sodium hypochlorite (NaClO) as a reducing bleaching agent. Are treated to decolorize the treated wastewater, introduce it into sand or other filter media, and after adsorbing activated carbon, it is discharged into rivers and the like.
【０００５】[0005]
【発明が解決しようとする課題】上記従来の次亜塩素酸
ソーダを用いた方法の場合、脱色効果は良いものの次亜
塩素酸ソーダの塩素分が活性炭に吸着して活性炭の劣化
を速めたり、処理水に塩素分が入り込み、河川等の魚類
に良い影響を与えないと云った問題がある。In the case of the method using the above-mentioned conventional sodium hypochlorite, the decolorizing effect is good, but the chlorine content of sodium hypochlorite is adsorbed on the activated carbon to accelerate the deterioration of the activated carbon, There is a problem that chlorine content enters the treated water and does not have a good effect on fish such as rivers.
【０００６】本発明は、次亜塩素酸ソーダのような塩素
分を含む漂白剤等の脱色剤を用いずに着色排水を良好に
脱色できるようにすることにある。An object of the present invention is to make it possible to satisfactorily decolor the colored wastewater without using a decolorizing agent such as a bleaching agent containing chlorine such as sodium hypochlorite.
【０００７】[0007]
【課題を解決するための手段】本発明は、廃棄される排
水を一旦中和処理及び曝気処理等して固液分離処理した
後、分離処理した排水中に無機塩系凝集剤と少量のカチ
オン系高分子凝集剤とを添加して攪拌処理し、該排水中
に含まれる着色物質を凝集沈澱させることにより着色し
ている排水を脱色処理することを特徴とする着色排水の
脱色処理方法である。According to the present invention, waste water to be discarded is once subjected to solid-liquid separation treatment such as neutralization treatment and aeration treatment, and then the separated waste water is treated with an inorganic salt coagulant and a small amount of cations. A method for decolorizing colored wastewater, characterized in that the colored wastewater is decolorized by aggregating and precipitating a coloring substance contained in the wastewater by adding a system polymer coagulant and stirring. .
【０００８】[0008]
【実施例】本発明を実施例に従って以下に詳細に説明す
る。図１は、本発明の着色排水の脱色処理方法における
工程を説明するブロック図であり、まず、処理すべき着
色排水を、曝気処理工程（曝気処理槽内）に導入して曝
気処理し、曝気処理槽内に沈澱物（スラッジ等）を生成
させ、また該着色排水中に混入している木屑、ごみなど
比較的大きい固形物を粗メッシュフィルター等によって
予め除去する。The present invention will be described in detail below with reference to examples. FIG. 1 is a block diagram for explaining the steps in the method for decolorizing colored wastewater according to the present invention. First, the colored wastewater to be treated is introduced into an aeration treatment step (in the aeration treatment tank) to perform aeration treatment, and then aeration. Precipitates (sludge, etc.) are generated in the treatment tank, and relatively large solid substances such as wood chips and dust mixed in the colored waste water are removed in advance by a coarse mesh filter or the like.
【０００９】処理すべき上記着色排水中に分散又は溶解
して含まれているＢＯＤ、ＣＯＤ、ＳＳ等の汚染度を示
す汚染物質は、曝気処理槽内又は次の固液分離処理工程
（固液分離処理槽内）に沈澱物として沈澱生成させる。Contaminants having a degree of contamination such as BOD, COD, SS, etc., which are contained in the above-mentioned colored wastewater to be treated by being dispersed or dissolved, are contained in the aeration treatment tank or in the next solid-liquid separation treatment step (solid-liquid separation treatment). A precipitate is formed as a precipitate in the separation treatment tank).
【００１０】続いて、図１、曝気処理された後の着色排
水は固液分離処理工程に導入され、固液分離処理槽内に
て沈澱物を生成させる。固液分離処理槽内に沈澱した該
沈澱物は、後に槽外に適宜回収除去される。Subsequently, as shown in FIG. 1, the colored waste water after the aeration treatment is introduced into a solid-liquid separation treatment step to form a precipitate in the solid-liquid separation treatment tank. The precipitate that has settled in the solid-liquid separation treatment tank is later recovered and removed outside the tank as appropriate.
【００１１】固液分離処理された後の着色処理排水（着
色排水）は、図１、次の脱色処理工程に導入される。脱
色処理工程では、アルミニウム塩等の無機塩系凝集剤
（例えば９９．８重量％〜９６．０重量％）と、少量の
脱色処理用のカチオン系高分子重合体からなる高分子凝
集剤（例えば０．２〜４．０重量％）とを着色排水中に
注入し、また適宜量のｐＨ調整剤（例えばｐＨ調整後の
着色排水のｐＨ値６〜７）を注入する。The colored treatment wastewater (colored wastewater) after the solid-liquid separation treatment is introduced into the subsequent decolorization treatment step in FIG. In the decolorization treatment step, a high-molecular flocculant (for example, 99.8% by weight to 96.0% by weight) such as an aluminum salt and a small amount of a cationic high-molecular weight flocculant for decolorization treatment (for example, 0.2 to 4.0% by weight) is injected into the colored waste water, and an appropriate amount of a pH adjusting agent (for example, pH value of the colored waste water after pH adjustment is 6 to 7) is injected.
【００１２】なお、カチオン系高分子重合体としては、
例えばジメチルアミン、メチルエチルアミン、ジエチル
アミン、メチルプロピルアミン、メチルブチルアミン、
ジブチルアミン等の第二アミンとエピクロロヒドリンと
の縮重合体、又はこれらの変性物であり、無機塩系凝集
剤としては、例えばポリ塩化アルミニウム、酸化アルミ
ニウム、硫酸アルミニウム、塩化アルミニウム等であ
る。As the cationic high molecular polymer,
For example, dimethylamine, methylethylamine, diethylamine, methylpropylamine, methylbutylamine,
It is a condensation polymer of a secondary amine such as dibutylamine and epichlorohydrin, or a modified product thereof. Examples of the inorganic salt-based coagulant include polyaluminum chloride, aluminum oxide, aluminum sulfate, aluminum chloride and the like. .
【００１３】凝集剤及びｐＨ調整剤が注入された着色排
水は、前記脱色処理工程の脱色処理槽内にて適宜攪拌処
理され、着色排水中に溶解若しくは分散浮遊状態で含ま
れている色素成分及び色素成分を含むコロイド状の着色
物質等の着色分をそれぞれ凝集剤によって凝集させて、
着色沈澱物として生成させる。The colored wastewater into which the coagulant and the pH adjusting agent have been injected is appropriately stirred in the decolorizing treatment tank of the decolorizing treatment step, and the coloring component contained in the colored wastewater in a dissolved or dispersed floating state is By aggregating the colored components such as colloidal coloring substances containing a pigment component with an aggregating agent,
It forms as a colored precipitate.
【００１４】色素成分及び色素成分を含むコロイド状着
色物質等の着色分を凝集して生成された浮遊する沈澱物
を含む着色排水は、当該脱色処理槽内にて着色沈澱物と
上澄み液とに分離して分離排出処理するか、又は他の沈
澱処理槽等に送流して着色沈澱物と上澄み液とに分離排
出処理するか、又は濾過処理工程（砂、活性炭などの濾
過材）、活性炭吸着処理工程（活性炭等の吸着処理材）
等に導入して、沈澱物を濾過材によって濾過、吸着除去
して適宜に清浄化処理した後に、河川等に適宜放流する
ものである。The colored waste water containing the floating precipitate formed by aggregating the colored components such as the pigment component and the colloidal coloring substance containing the pigment component is separated into the colored precipitate and the supernatant liquid in the decolorization treatment tank. Separation and separation discharge treatment, or sending to another precipitation treatment tank etc. to separate and discharge treatment to colored precipitate and supernatant liquid, or filtration treatment process (filter material such as sand and activated carbon), activated carbon adsorption Treatment process (adsorption treatment material such as activated carbon)
Etc., the precipitate is filtered by a filter medium, adsorbed and removed, and appropriately cleaned, and then appropriately discharged into a river or the like.
【００１５】本発明の着色排水の具体的脱色処理方法
を、図２の着色排水廃棄処理装置の概要側面図に従って
説明する。A specific method for decolorizing the colored wastewater according to the present invention will be described with reference to the schematic side view of the colored wastewater disposal apparatus shown in FIG.
【００１６】曝気処理工程、固液分離処理工程等を経て
前処理された後の着色排水を、流入管１により貯溜槽２
内に一旦貯溜する。３は投入された着色処理排水であ
る。貯溜槽２に貯溜された着色処理排水３は、ポンプＰ
1 にて送流管４により脱色処理工程の第１脱色反応槽５
に投入する。The colored drainage water, which has been pretreated through the aeration treatment step, the solid-liquid separation treatment step, etc., is stored in the storage tank 2 through the inflow pipe 1.
Store in once. Reference numeral 3 is the coloring treatment wastewater that has been input. The colored treatment wastewater 3 stored in the storage tank 2 is supplied to the pump P.
The first bleaching reactor 5 decolorization process by feed flow tube 4 at 1
Throw in.
【００１７】第１脱色反応槽５に貯溜された着色排水６
中には、無機塩系凝集剤１１を、凝集剤貯溜槽９よりポ
ンプＰ2 にて送流管１０により注入し、またｐＨ調整剤
１４（水酸化ナトリウムＮａＯＨ等）を、ｐＨ調整剤貯
溜槽１２よりポンプＰ3 にて送流管１３により注入す
る。なお、８はｐＨ測定器である。Colored waste water 6 stored in the first decolorization reaction tank 5
An inorganic salt-based coagulant 11 was injected from the coagulant storage tank 9 with the pump P 2 by the flow pipe 10, and a pH adjusting agent 14 (sodium hydroxide NaOH, etc.) was added into the pH adjusting agent storage tank. From 12 a pump P 3 is used to inject through a flow pipe 13. In addition, 8 is a pH measuring device.
【００１８】また前記着色排水６中には、カチオン系高
分子凝集剤１７を、カチオン系高分子凝集剤貯溜槽１５
よりポンプＰ等にて送流路１６により注入する。In the colored drainage 6, a cationic polymer flocculant 17 is added to the cationic polymer flocculant storage tank 15.
It is injected by the pump P or the like through the flow passage 16.
【００１９】第１脱色反応槽５内には、モーターＭにて
駆動回転する攪拌装置７を備え、投入された着色処理排
水３と、凝集剤１１と、ｐＨ調整剤１４と、カチオン系
高分子液１７を含む着色排水６を攪拌混合処理する。The first decolorization reaction tank 5 is provided with a stirrer 7 which is driven and rotated by a motor M, and the coloring treatment waste water 3 which has been put in, a flocculant 11, a pH adjuster 14, and a cationic polymer. The colored wastewater 6 containing the liquid 17 is agitated and mixed.
【００２０】攪拌処理された着色排水６は、送流管１８
により脱色反応処理工程の第２反応槽１９に投入し、投
入された後の着色排水２０は、モーターＭ2 にて回転す
る攪拌装置２１によって攪拌処理される。The colored wastewater 6 which has been subjected to the stirring treatment is sent to the flow pipe 18
Thus, the colored waste water 20 is charged into the second reaction tank 19 of the decolorization reaction treatment step, and the charged colored waste water 20 is stirred by a stirring device 21 rotated by a motor M 2 .
【００２１】次に、攪拌処理後の着色処理排水２０を、
送流管２２により脱色沈澱処理槽２３に投入し、該着色
沈澱処理槽２３では、着色排水２０中に含まれているコ
ロイド状着色物質（色素分及び色素を含む微細着色物
質）等の着色分を、無機塩系凝集剤１１及びカチオン系
高分子凝集剤１７によって凝集させ、沈澱物２４ａとし
て沈澱処理槽２３内の下部に沈澱し、上部には着色分を
ほとんど含まない脱色された状態の上澄み液２４が得ら
れる。Next, the coloring treatment wastewater 20 after the stirring treatment is
It is introduced into the decolorization precipitation treatment tank 23 through the flow pipe 22, and in the coloring precipitation treatment tank 23, coloring components such as colloidal coloring substances (pigment components and fine coloring substances containing pigments) contained in the coloring wastewater 20. Is aggregated with the inorganic salt-based coagulant 11 and the cationic polymer coagulant 17, and precipitates as a precipitate 24a in the lower part of the precipitation treatment tank 23, and in the upper part, a decolorized supernatant containing almost no colored components. Liquid 24 is obtained.
【００２２】脱色された上澄み液２４は、処理槽２３上
部にあるトリップ２３ａより脱色排水２７として排水貯
溜槽２６に投入される。The decolorized supernatant liquid 24 is put into a drainage storage tank 26 as a decolorization wastewater 27 from a trip 23a located above the processing tank 23.
【００２３】脱色排水２７は、必要に応じて、ポンプＰ
5 にて送流管２８により砂等の濾過材を用いた濾過処理
工程、活性炭処理工程等の濾過装置２９に投入し、該濾
過装置内を通過させて微細沈澱浮遊物等の微細固形物を
除去した後に、排水処理装置より外部に排出するもので
ある。The decolorizing drainage 27 is supplied to the pump P if necessary.
At 5 is introduced into a filtration device 29 such as a filtration treatment step using a filtration material such as sand, an activated carbon treatment step, etc. by a flow pipe 28, and fine solid matter such as fine precipitate suspended matter is passed through the filtration device 29. After the removal, it is discharged from the waste water treatment equipment to the outside.
【００２４】下記に本発明の着色排水の脱色処理工程の
具体的試験例を下記に示す。 ＜実施例１＞着色排水を予め曝気処理等の固液分離処理
して前処理した着色排水を、攪拌装置付き脱色処理槽に
導入して、アルミニウム塩系凝集剤（ＳＴＫ４−１０、
多木化学（株）製）を着色排水中に、その凝集剤濃度が
約５００〜１０００ｐｐｍになるように注入し、続いて
該着色排水のｐＨ値が６．５を示すように、適宜量のｐ
Ｈ調整剤（水酸化ナトリウム）を注入した。Specific test examples of the decolorizing treatment process of the colored waste water of the present invention are shown below. <Example 1> The colored wastewater pretreated by solid-liquid separation treatment such as aeration treatment was introduced into a decolorization treatment tank equipped with a stirrer, and the aluminum salt-based coagulant (STK4-10,
Taki Chemical Co., Ltd.) was injected into the colored wastewater so that the coagulant concentration was about 500 to 1000 ppm, and then an appropriate amount was added so that the pH value of the colored wastewater showed 6.5. p
An H modifier (sodium hydroxide) was injected.
【００２５】続いて、該着色排水に、カチオン系高分子
凝集剤（カチオン系高分子重合体）を、カチオン系高分
子凝集剤：アルミニウム塩系凝集剤の添加量比率が約
３：５００〜３：１０００になるように添加した後に、
適宜時間（例えば数分間程度）攪拌処理した後に放置し
たところ、脱色処理槽内の着色排水は、凝集剤によって
その底部に凝集沈澱した着色沈澱物と、上部に脱色した
上澄み液とに分離し、着色沈澱物を脱色処理槽の底部排
出管より抜取り除去することによって脱色排水が得られ
た。Subsequently, a cationic polymer flocculant (cationic polymer) is added to the colored wastewater, and the ratio of the cationic polymer flocculant to the aluminum salt flocculant is about 3: 500 to 3. : After adding to 1000,
When left standing after stirring for an appropriate time (for example, for several minutes), the colored waste water in the decolorization treatment tank is separated into a colored precipitate that has been coagulated and precipitated at the bottom of the decolorizing agent and a supernatant that has been decolorized at the top, Decolorization waste water was obtained by extracting and removing the colored precipitate from the bottom discharge pipe of the decolorization treatment tank.
【００２６】＜実施例２＞着色排水を予め曝気処理等の
固液分離処理して前処理した着色排水を、攪拌装置付き
脱色処理槽に導入して、アルミニウム塩系凝集剤（ＳＴ
Ｋ４−１０、多木化学（株）製）を着色排水中に、その
凝集剤濃度が約５００〜１０００ｐｐｍになるように注
入し、続いて該着色排水のｐＨ値が６．５を示すよう
に、適宜量のｐＨ調整剤（水酸化ナトリウム）を注入し
た。<Example 2> The colored wastewater pretreated by solid-liquid separation treatment such as aeration treatment was introduced into a decolorization treatment tank equipped with a stirrer, and the aluminum salt-based flocculant (ST
K4-10, manufactured by Taki Kagaku Co., Ltd., was injected into the colored wastewater so that the coagulant concentration was about 500 to 1000 ppm, and then the pH value of the colored wastewater was 6.5. Then, an appropriate amount of pH adjusting agent (sodium hydroxide) was injected.
【００２７】続いて、該着色排水に、カチオン系高分子
凝集剤（カチオン系高分子重合体）を、カチオン系高分
子凝集剤：アルミニウム塩系凝集剤の添加量比率が約
３：５００〜３：１０００になるように添加した後に、
適宜時間（例えば数分間程度）攪拌処理したところ、脱
色処理槽内の着色排水中には、凝集剤によって凝集した
浮遊するた多数の着色凝集物が生成された。この着色排
水を、砂又は活性炭を濾過材とする濾過装置内に導入し
て濾過したところ、排水中の着色凝集物は濾過材によっ
て除去され、ほとんど無色の脱色された排水が得られ
た。Subsequently, a cationic polymer flocculant (cationic polymer flocculant) is added to the colored waste water, and the ratio of the cationic polymer flocculant to the aluminum salt flocculant is about 3: 500 to 3. : After adding to 1000,
When stirring treatment was performed for an appropriate time (for example, for several minutes), a large number of floating colored aggregates aggregated by the aggregating agent were generated in the colored waste water in the decolorization treatment tank. When this colored wastewater was introduced into a filtration device using sand or activated carbon as a filtration material and filtered, the colored aggregates in the wastewater were removed by the filtration material, and almost colorless decolorized wastewater was obtained.
【００２８】[0028]
【作用】本発明の着色排水の脱色処理方法は、廃棄され
る着色排水を中和処理及び曝気処理して沈澱物を一旦固
液分離除去した後に、その着色排水中に、無機塩系凝集
剤と少量のカチオン系高分子凝集剤とを添加して攪拌処
理して脱色するものであり、該着色排水の着色分である
コロイド状の着色物質等を凝集剤を用いて凝集沈澱させ
て脱色することができる。According to the method for decolorizing a colored wastewater of the present invention, the wastewater to be discarded is neutralized and aerated to remove the precipitate once by solid-liquid separation, and then the inorganic waste-based coagulant is added to the colored wastewater. And a small amount of a cationic polymer flocculant are added and stirred to decolorize, and the colloidal coloring substance or the like, which is the coloring component of the colored waste water, is coagulated and precipitated using a coagulant to decolorize. be able to.
【００２９】本発明における脱色処理剤として使用する
無機塩系凝集剤は、重金属塩以 外は比較的無害であ
り、また、カチオン系高分子凝集剤も比較的無害なもの
であるので、従来のような次亜塩素酸ソーダを用いた脱
色と比較して非塩素系による脱色処理であるために、脱
色処理後の排水を河川等の外部に廃棄処理する場合に塩
素分を流出することがなく安全であり、また排水浄化装
置に一般に使用されている活性炭等の濾過材を塩素分に
よって劣化したり汚染したりする心配がない。The inorganic salt-based flocculant used as the decolorizing agent in the present invention is relatively harmless except for heavy metal salts, and the cationic polymer flocculant is also relatively harmless. Compared with such decolorization using sodium hypochlorite, since it is a non-chlorine type decolorization treatment, there is no chlorine outflow when the wastewater after decolorization treatment is disposed of outside the river etc. It is safe, and there is no fear of degrading or contaminating the filter medium such as activated carbon, which is generally used in the waste water purification device, with chlorine.
【００３０】[0030]
【発明の効果】本発明の着色排水の脱色処理方法は、従
来の次亜塩素酸ソーダを用いた方法に比較して脱色効果
に遜色がなく、また、使用する脱色処理用剤が非塩素系
であるために排水浄化用部材の劣化への影響がなく、ま
た廃棄処理される排水中に塩素分が入り込んで河川等を
汚染することがない等の良好な効果が期待できるもので
ある。EFFECTS OF THE INVENTION The method for decolorizing colored wastewater of the present invention is comparable to the conventional method using sodium hypochlorite, and the decolorizing agent used is a non-chlorine type. Therefore, it is possible to expect good effects such as no influence on the deterioration of the wastewater purification member, and the fact that chlorine is not introduced into the wastewater that is disposed of to contaminate rivers and the like.
【図１】本発明の着色排水の脱色処理方法を説明する工
程ブロック図である。FIG. 1 is a process block diagram illustrating a method for decolorizing colored wastewater according to the present invention.
【図２】本発明の着色排水の脱色処理方法における具体
的実施例を説明する排水処理装置の概要図である。FIG. 2 is a schematic diagram of a wastewater treatment apparatus for explaining a specific example of the method for decolorizing colored wastewater according to the present invention.
【図３】従来の着色排水の脱色処理方法を説明する工程
ブロック図である。FIG. 3 is a process block diagram illustrating a conventional decolorization treatment method for colored wastewater.
１…流入管 ２…貯溜槽 ３…着色排水 ４…送流管
５…第１脱色反応槽 ６…着色排水 ７…攪拌装置 ８…ｐＨ値測定器 ９…
凝集剤貯溜槽 １０…送流管 １１…凝集剤 １２…ｐ
Ｈ調整剤貯溜槽 １３…送流管 １４…ｐＨ調整剤 １
５…凝集剤貯溜槽 １６…送流管 １７…凝集剤 １８
…送流管 １９…第２脱色反応槽 ２０…着色排水 ２
１…攪拌装置 ２２…送流管 ２３…脱色沈澱処理槽
２４…上澄み液 ２４ａ…沈澱物 ２５…送流管 ２６
…脱色排水貯溜槽 ２７…脱色排水 ２８…送流管 ２
９…濾過装置1 ... Inflow pipe 2 ... Storage tank 3 ... Colored drainage 4 ... Flow pipe
5 ... 1st decolorization reaction tank 6 ... Colored drainage 7 ... Stirrer 8 ... pH value measuring device 9 ...
Flocculant storage tank 10 ... Flow pipe 11 ... Flocculant 12 ... p
H adjuster storage tank 13 ... Flow pipe 14 ... pH adjuster 1
5 ... Flocculant storage tank 16 ... Flow pipe 17 ... Flocculant 18
... Flow pipe 19 ... Second decolorization reaction tank 20 ... Colored wastewater 2
1 ... Stirrer 22 ... Flow pipe 23 ... Decolorization sedimentation treatment tank
24 ... Supernatant liquid 24a ... Precipitate 25 ... Flow pipe 26
... Decolorization drainage storage tank 27 ... Decolorization drainage 28 ... Flow pipe 2
9 ... Filtration device
Claims (2)
理等して固液分離処理した後、分離処理した排水中に無
機塩系凝集剤と少量のカチオン系高分子凝集剤とを添加
して攪拌処理し、該排水中に含まれる着色物質を凝集沈
澱させることにより着色している排水を脱色処理するこ
とを特徴とする着色排水の脱色処理方法。1. A waste water to be discarded is once subjected to solid-liquid separation treatment such as neutralization treatment and aeration treatment, and then an inorganic salt-based coagulant and a small amount of a cationic polymer coagulant are added to the separated waste water. A method for decolorizing a colored wastewater, which comprises subjecting the colored wastewater to a decolorization treatment by subjecting the colored wastewater contained in the wastewater to coagulation and precipitation.
の排水を、砂、活性炭等の濾過材に接触処理して、中に
浮遊する微細な凝集沈澱物等固形分を除去する請求項１
に記載の着色排水の脱色処理方法。2. The solid waste such as fine agglomerated precipitate suspended therein is removed by subjecting the wastewater after the decolorization treatment by the agglomerated sedimentation of the coloring substance to a filter material such as sand or activated carbon.
The method for decolorizing colored wastewater according to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1463093A JPH06226265A (en) | 1993-02-01 | 1993-02-01 | Decolorization treatment of colored waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1463093A JPH06226265A (en) | 1993-02-01 | 1993-02-01 | Decolorization treatment of colored waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06226265A true JPH06226265A (en) | 1994-08-16 |
Family
ID=11866523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1463093A Pending JPH06226265A (en) | 1993-02-01 | 1993-02-01 | Decolorization treatment of colored waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06226265A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100397168B1 (en) * | 2001-02-02 | 2003-09-06 | (주)범한엔지니어링 종합건축사 사무소 | Apparatus and Method For Animal Waste water Treatment |
| WO2004108608A1 (en) * | 2003-06-11 | 2004-12-16 | Seong Soo Hong | Method and apparatus for treating wastewater containing organic compound of high concentration |
| CN109231733A (en) * | 2018-11-26 | 2019-01-18 | 佛山市绿涟生物科技有限公司 | Dyeing and printing sewage processing system |
-
1993
- 1993-02-01 JP JP1463093A patent/JPH06226265A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100397168B1 (en) * | 2001-02-02 | 2003-09-06 | (주)범한엔지니어링 종합건축사 사무소 | Apparatus and Method For Animal Waste water Treatment |
| WO2004108608A1 (en) * | 2003-06-11 | 2004-12-16 | Seong Soo Hong | Method and apparatus for treating wastewater containing organic compound of high concentration |
| CN109231733A (en) * | 2018-11-26 | 2019-01-18 | 佛山市绿涟生物科技有限公司 | Dyeing and printing sewage processing system |
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