JP2006255624A - Drain treating system using powder coagulant - Google Patents

Drain treating system using powder coagulant Download PDF

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JP2006255624A
JP2006255624A JP2005078443A JP2005078443A JP2006255624A JP 2006255624 A JP2006255624 A JP 2006255624A JP 2005078443 A JP2005078443 A JP 2005078443A JP 2005078443 A JP2005078443 A JP 2005078443A JP 2006255624 A JP2006255624 A JP 2006255624A
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treatment system
wastewater treatment
water
tank
wastewater
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Toshihiro Okita
俊博 尾北
Ichiro Serizawa
一郎 芹沢
Hirotaka Kajiya
廣隆 梶家
Kuniyasu Koide
国康 小出
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an advanced, high-speed, simple and compact drain treating system suitable for a powder coagulant. <P>SOLUTION: The system is optimally controlled in such a way that the break of coagulated materials is suppressed by suppressing the feed rate of the speed coagulant and the agitating force by an agitator to various drain properties while the speed of coagulation is kept high through making the feed rate of a powder supply device and the agitating force of the agitator change. The excellent system corresponding to the drain properties is constructed by integrating the agitating vessel with a sedimentation vessel, performing multistage treatment or being compounded with other water treating operation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

排水処理に関するものである。特に土木工事等の濁水の排水処理、自然環境に影響する工場排水、農業排水、生活排水の排水処理に関するものである。   It relates to wastewater treatment. In particular, it relates to wastewater treatment of muddy water, such as civil engineering work, wastewater treatment of factory wastewater, agricultural wastewater, and domestic wastewater that affects the natural environment.

従来、濁水排水や、工場等の排水では、凝集沈澱処理をする場合、凝集に時間がかかり、凝集粒子の沈降が緩やかな凝集剤が用いられ、それに見合った大型の凝集処理装置が用いられていた。特に、高速凝集剤である粉体の無機凝集剤に適した排水処理システムはなかった。   Conventionally, in turbid water wastewater and wastewater from factories, when agglomeration and precipitation treatment is performed, it takes time to agglomerate, and an aggregating agent in which agglomerated particles settle slowly is used, and a large agglomeration treatment apparatus corresponding to that is used. It was. In particular, there was no wastewater treatment system suitable for powdery inorganic flocculants that are high-speed flocculants.

粉体の高速凝集剤に適した、高速、簡潔、コンパクトで、種々の排水に対応できる排水処理システムとすることを課題とする。   It is an object of the present invention to provide a wastewater treatment system suitable for a high-speed flocculant of powder and capable of handling various wastewaters at high speed, simplicity and compactness.

粉体供給装置の供給速度と撹拌機の撹拌力を変化させることができるようにする、または凝集物の沈降性を検出して粉体の供給速度を制御することによって、様々な排水性状に対して、高速凝集剤の供給速度と撹拌機の撹拌力を、凝集速度を高く保ちつつ凝集物の破壊を抑えて最適に調整できるシステムとする。   For various drainage properties, it is possible to change the feeding speed of the powder feeder and the stirring force of the stirrer, or to control the powder feeding speed by detecting the sedimentation of agglomerates. Thus, a system capable of optimally adjusting the supply speed of the high-speed flocculant and the stirring force of the stirrer while suppressing the breakage of the aggregate while keeping the aggregation speed high.

撹拌槽と凝集物を清水と分離するための沈殿槽とを一体として、それぞれの機能を内部構造である仕切りにより分けることにより、装置全体を小型化する。   The entire apparatus is reduced in size by integrating the stirring tank and the sedimentation tank for separating the agglomerates from the fresh water, and separating each function by a partition which is an internal structure.

上記の排水処理システムを直列につないだ排水処理システムとして、排水中のある成分を吸着または凝集により分離した後の水を、更に水中のある成分を吸着または凝集により分離して、不純物を低減するシステムとする。   As a wastewater treatment system in which the above wastewater treatment system is connected in series, the water after separation of some components in the wastewater by adsorption or aggregation is separated, and further, some components in the water are separated by adsorption or aggregation to reduce impurities. System.

上記の排水処理システムと沈殿槽に溜まった高含水汚泥を土壌改良剤と混ぜ合わせた後に固形分と水分を分ける汚泥処理を組み合わせて排水・汚泥処理システムとする。   The waste water treatment system is combined with the sludge treatment that separates the solid content and moisture after the high water content sludge accumulated in the sedimentation tank is mixed with the soil conditioner.

上記の排水処理システムと、排水処理性状を調整する薬剤を投入制御する装置を組み合せて複合的な排水処理システムとする。   The above waste water treatment system and a device for controlling the introduction of a chemical for adjusting the waste water treatment properties are combined to form a composite waste water treatment system.

上記の排水処理システムと、加熱または冷却または熱交換する装置を組み合せて複合的な排水処理システムとする。   The above waste water treatment system and a device for heating, cooling or heat exchange are combined to form a composite waste water treatment system.

上記の排水処理システムと、磁気式水処理装置を組み合せて複合的な排水処理システムとする。   The above waste water treatment system and a magnetic water treatment device are combined to form a composite waste water treatment system.

本発明を利用することによって、排水処理の全体システムが、コンパクトになり、設備コストが低減され、ランニングコストも抑えられ、廃棄物の発生量も抑えられるようになる。   By utilizing the present invention, the entire wastewater treatment system becomes compact, equipment costs are reduced, running costs are reduced, and waste generation is also reduced.

排水処理において広い分野で利用されている活性汚泥法についても、ＳＳ（浮遊物質）を含んだ排水を活性汚泥槽の前に本発明のシステムで前処理することにより、活性汚泥槽への負荷が大幅に削減できるため、主にばっ気用のブロアを稼動させるためにかかる多大なランニングコストが低減できるようになる。   Regarding the activated sludge method used in a wide range of wastewater treatment, pretreatment of wastewater containing SS (floating matter) with the system of the present invention before the activated sludge tank reduces the load on the activated sludge tank. Since it can be greatly reduced, it is possible to reduce a great running cost mainly for operating a blower for aeration.

以下、図１について説明する。原水槽１に入った排水を原水ポンプ１ａにより撹拌槽３ａに移送し、凝集剤供給装置２により調整または制御された供給速度で供給した粉体凝集剤と混合撹拌する。撹拌機３ｂの回転速度は可変として、凝集処理に適した回転速度に調整できるものとする。撹拌槽３ａで排水中の不純物が吸着・凝集され、凝集塊は次の沈殿槽３ｃにおいて底部に沈殿する。沈殿槽３ｃの上澄水は、上澄水ポンプ３ｄにより調整槽４に移送し、ｐＨなどの調整の後、処理水として放流する。一方、沈殿槽３ｃの底部に溜まった汚泥は、沈殿槽汚泥ポンプ３ｅにより汚泥撹拌装置１３に移送し、土壌改良剤供給装置により供給する粉体の改良剤と混合撹拌する。汚泥と改良剤の混合物は、汚泥撹拌槽１３ａから汚泥槽ポンプ１３ｃによりろ過機１４に移送され、ろ過されたケーキは良質な土壌として利用する。また、ろ過機１４から浸出するろ液はろ液槽１５に受け、ろ液ポンプ１５ａにより原水槽へ返送する。以上により、一連の排水・汚泥処理システムが完結する。   Hereinafter, FIG. 1 will be described. The wastewater that has entered the raw water tank 1 is transferred to the stirring tank 3a by the raw water pump 1a, and mixed and stirred with the powder flocculant supplied at the supply speed adjusted or controlled by the flocculant supply device 2. The rotation speed of the stirrer 3b is variable, and can be adjusted to a rotation speed suitable for the aggregation treatment. Impurities in the waste water are adsorbed and agglomerated in the stirring tank 3a, and the agglomerates settle to the bottom in the next sedimentation tank 3c. The supernatant water of the sedimentation tank 3c is transferred to the adjustment tank 4 by the supernatant water pump 3d and discharged as treated water after adjusting the pH and the like. On the other hand, the sludge accumulated at the bottom of the settling tank 3c is transferred to the sludge stirring apparatus 13 by the settling tank sludge pump 3e, and mixed and stirred with the powder improving agent supplied by the soil improving agent supply apparatus. The mixture of sludge and the improving agent is transferred from the sludge agitation tank 13a to the filter 14 by the sludge tank pump 13c, and the filtered cake is used as high-quality soil. The filtrate leached from the filter 14 is received by the filtrate tank 15 and returned to the raw water tank by the filtrate pump 15a. This completes a series of wastewater and sludge treatment systems.

以下、図２について説明する。原水槽２１に一旦溜められた排水は、原水ポンプ２１ａにより撹拌槽２３ａに移送し、凝集剤供給装置２２により調整または制御された供給速度で供給した粉体凝集剤と混合撹拌する。撹拌槽２３ａで排水中の不純物が吸着・凝集され、凝集塊は次の沈殿槽２３ｃにおいて底部に沈殿する。沈殿槽２３ｃの上澄水は、撹拌槽２５ａに移送し、凝集剤供給装置２４により調整または制御された供給速度で供給した粉体凝集剤と混合撹拌する。撹拌槽２５ａで排水中の不純物が吸着・凝集され、凝集塊は次の沈殿槽２４ｃにおいて底部に沈殿する。沈殿槽２４ｃの上澄水は調整槽２６に移送し、ｐＨなどの調整の後、処理水として放流する。一方、沈殿槽２３ｃおよび沈殿槽２４ｃの底部に溜まった汚泥は、汚泥槽３１に移送し、ここから汚泥ポンプ３１ａによりろ過機３２に移送されてろ過する。ろ過機３２から浸出するろ液はろ液槽３３に受け、ろ液ポンプ３３ａにより原水槽２１へ返送する。以上により、一連の直列多段凝集の排水処理システムが完結する。   Hereinafter, FIG. 2 will be described. The wastewater once stored in the raw water tank 21 is transferred to the stirring tank 23a by the raw water pump 21a, and mixed and stirred with the powder coagulant supplied at a supply speed adjusted or controlled by the coagulant supply device 22. Impurities in the waste water are adsorbed and agglomerated in the stirring tank 23a, and the agglomerates settle to the bottom in the next sedimentation tank 23c. The supernatant water of the precipitation tank 23c is transferred to the stirring tank 25a, and mixed and stirred with the powder flocculant supplied at a supply speed adjusted or controlled by the flocculant supply device 24. Impurities in the waste water are adsorbed and agglomerated in the stirring tank 25a, and the agglomerates settle to the bottom in the next sedimentation tank 24c. The supernatant water of the sedimentation tank 24c is transferred to the adjustment tank 26, and is discharged as treated water after adjusting pH and the like. On the other hand, the sludge collected at the bottom of the settling tank 23c and the settling tank 24c is transferred to the sludge tank 31, and is transferred from here to the filter 32 by the sludge pump 31a and filtered. The filtrate leached from the filter 32 is received by the filtrate tank 33 and returned to the raw water tank 21 by the filtrate pump 33a. As described above, a series of serial multistage coagulation wastewater treatment systems is completed.

食品工場排水、土木工事の濁水排水、温泉・温浴施設の排水などの排水性状に合わせて本発明のシステムで計画すると、コンパクトで低コストのシステムとして利用できる。   If the system of the present invention is planned in accordance with the drainage properties such as wastewater from food factories, muddy water from civil engineering works, and hot water / hot bath facilities, it can be used as a compact and low-cost system.

粉体の凝集剤を用いた、排水・汚泥処理システムの一例を示すフロー図である。It is a flowchart which shows an example of the waste_water | drain / sludge processing system using the powder flocculant. 粉体の凝集剤を用い、撹拌槽と沈殿槽を一体化した直列多段凝集の排水処理システムの一例を示すフロー図である。It is a flowchart which shows an example of the waste water treatment system of the serial multistage aggregation which integrated the stirring tank and the sedimentation tank using the powder flocculant.

符号の説明Explanation of symbols

１、２１ 原水槽
１ａ、２１ａ 原水ポンプ
２、２２、２４ 凝集剤供給装置
２３、２５ 一体型撹拌・沈殿装置
３ａ、２３ａ、２５ａ
撹拌槽
３ｂ、２３ｂ、２５ｂ
撹拌機
３ｃ、２３ｃ、２５ｃ
沈殿槽
３ｄ 上澄水ポンプ
３ｅ 沈殿槽汚泥ポンプ
４、２６ 調整槽
４ａ、２６ａ 調整槽ポンプ
４ｂ、２６ｂ ｐＨ調整剤タンク
１２ 土壌改良剤供給装置
１３ａ 汚泥撹拌槽
１３ｂ 汚泥撹拌機
１３ｃ 汚泥槽ポンプ
３１ 汚泥槽
３１ａ 汚泥ポンプ
１４、３２ ろ過機
１５、３３ ろ液槽
１５ａ、３３ａ ろ液ポンプ

1,21 Raw water tank 1a, 21a Raw water pump 2, 22, 24 Coagulant supply device 23, 25 Integrated stirring / precipitation device 3a, 23a, 25a
Stirring tank 3b, 23b, 25b
Stirrer 3c, 23c, 25c
Precipitation tank 3d Supernatant water pump 3e Precipitation tank sludge pump 4, 26 Adjustment tank 4a, 26a Adjustment tank pump 4b, 26b pH adjuster tank 12 Soil improver supply device 13a Sludge agitation tank 13b Sludge agitator 13c Sludge tank pump 31 Sludge tank 31a Sludge pump 14, 32 Filtration machine 15, 33 Filtrate tank 15a, 33a Filtrate pump

Claims (7)

粉体の凝集剤を少量一定速度に供給する粉体供給装置、排水と供給された粉体凝集剤を混合撹拌させる撹拌槽、動力源と結合され動力源から伝達される運動エネルギーにより撹拌槽の中の排水を流動させて撹拌させる撹拌機からなり、粉体供給装置の供給速度と撹拌機の撹拌力を変化させることができる、または凝集物の沈降性を検出して粉体供給速度を制御することによって、様々な排水性状に対して凝集剤の供給速度と撹拌機の撹拌力を、凝集速度を高く保ちつつ凝集物の破壊を抑えて最適化することを可能とした排水処理システム。 A powder supply device that supplies a small amount of powder flocculant at a constant speed, an agitation tank that mixes and stirs the waste water and the supplied powder flocculant, and a kinetic energy that is coupled with the power source and transmitted from the power source. It consists of an agitator that flows and stirs the waste water inside, and can change the supply rate of the powder supply device and the agitation power of the agitator, or control the powder supply rate by detecting the sedimentation of aggregates By doing so, a wastewater treatment system that can optimize the supply speed of the flocculant and the stirring force of the stirrer for various drainage properties while keeping the agglomeration speed high and suppressing destruction of the agglomerates. 請求項１に示す排水処理システムを含み、撹拌槽と凝集物を清水と分離するための沈殿槽とを一体として、それぞれの機能を内部構造である仕切りにより分けることにより、装置を小型化した排水処理システム。 Waste water treatment system comprising the waste water treatment system according to claim 1, wherein the agitation tank and the sedimentation tank for separating the agglomerates from the fresh water are integrated, and each function is divided by a partition which is an internal structure, thereby reducing the size of the apparatus. Processing system. 請求項１または請求項２の排水処理システムを直列につないだ排水処理システムであって、排水中のある成分を吸着または凝集により分離した後の水を、更に水中のある成分を吸着または凝集により分離して、不純物を低減した水とする排水処理システム。 A wastewater treatment system in which the wastewater treatment system according to claim 1 or 2 is connected in series, wherein water after separation of certain components in the wastewater by adsorption or coagulation, and further components in water by adsorption or coagulation. A wastewater treatment system that separates water to reduce impurities. 請求項１または請求項２または請求項３に示す排水処理システムであって、これと沈殿槽に溜まった高含水汚泥を土壌改良剤と混ぜ合わせた後に固形分と水分を分ける汚泥処理を組み合わせた、排水・汚泥処理システム。 The wastewater treatment system according to claim 1 or claim 2 or claim 3, wherein the high water content sludge accumulated in the sedimentation tank is combined with a soil conditioner and then sludge treatment for separating solids and moisture is combined. , Drainage and sludge treatment system. 請求項１または請求項２または請求項３に示す排水処理システムであって、これと排水処理性状を調整する薬剤を投入制御する装置を組み合せた排水処理システム。 A wastewater treatment system according to claim 1 or claim 2 or claim 3, wherein the wastewater treatment system is combined with a device for controlling the introduction of a chemical for adjusting the wastewater treatment properties. 請求項１または請求項２または請求項３に示す排水処理システムであって、これと加熱または冷却または熱交換する装置を組み合せた排水処理システム。 A wastewater treatment system according to claim 1 or claim 2 or claim 3, wherein the wastewater treatment system is a combination of this and a device for heating, cooling or heat exchange. 請求項１または請求項２または請求項３に示す排水処理システムであって、これと磁気式水処理装置を組み合せた排水処理システム。


A wastewater treatment system according to claim 1, 2 or 3, wherein the wastewater treatment system is a combination of this and a magnetic water treatment device.


JP2005078443A 2005-03-18 2005-03-18 Drain treating system using powder coagulant Pending JP2006255624A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012192344A (en) * 2011-03-16 2012-10-11 Sintokogio Ltd Wastewater treatment equipment, and waste water treatment method
CN103086584A (en) * 2013-02-25 2013-05-08 周海波 Sludge treatment system and method
JP2017025628A (en) * 2015-07-24 2017-02-02 清水建設株式会社 Snow melting facility and snow melting method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012192344A (en) * 2011-03-16 2012-10-11 Sintokogio Ltd Wastewater treatment equipment, and waste water treatment method
CN103086584A (en) * 2013-02-25 2013-05-08 周海波 Sludge treatment system and method
JP2017025628A (en) * 2015-07-24 2017-02-02 清水建設株式会社 Snow melting facility and snow melting method

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