JP2007319819A - Phosphorus recovery method - Google Patents

Phosphorus recovery method Download PDF

Info

Publication number
JP2007319819A
JP2007319819A JP2006154815A JP2006154815A JP2007319819A JP 2007319819 A JP2007319819 A JP 2007319819A JP 2006154815 A JP2006154815 A JP 2006154815A JP 2006154815 A JP2006154815 A JP 2006154815A JP 2007319819 A JP2007319819 A JP 2007319819A
Authority
JP
Japan
Prior art keywords
tank
phosphorus
sewage
sludge
microorganism
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.)
Granted
Application number
JP2006154815A
Other languages
Japanese (ja)
Other versions
JP5519898B2 (en
Inventor
Minoru Suzuki
實 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KANSAI PGS KK
Original Assignee
KANSAI PGS KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KANSAI PGS KK filed Critical KANSAI PGS KK
Priority to JP2006154815A priority Critical patent/JP5519898B2/en
Publication of JP2007319819A publication Critical patent/JP2007319819A/en
Application granted granted Critical
Publication of JP5519898B2 publication Critical patent/JP5519898B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Biological Treatment Of Waste Water (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a phosphorus recovery method which enables a reduction in treatment cost, and enables easy recovery of phosphorus. <P>SOLUTION: A combined septic tank 10 as an example of a sewage treatment device comprises: a first tank 11 with microorganism support materials 12 and a foaming machine 13 inside, treating sewage flowing into the tank; a second tank 15 installed adjacent to the first tank 11 with microorganism support materials 12 and a foaming machine 17 inside, carrying out further treatment of the water treated in the first tank 11; and a third tank 19 installed adjacent to the second tank 15, sterilizing the water treated in the second tank 15 to discharge it outside. As sludge which has adhered to the microorganism support materials 12 contains a high concentration of phosphorus, phosphorus can be easily recovered by recovering the microorganism support materials 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、リンの回収方法およびリンの回収装置に関し、特に、容易にリンが回収できる、リンの回収方法に関する。   The present invention relates to a phosphorus recovery method and a phosphorus recovery apparatus, and more particularly to a phosphorus recovery method that can easily recover phosphorus.

従来の、リン回収方法が、たとえば、特開２００３−７１４９５号公報（特許文献１）に開示されている。同公報によれば、リンを含有する生活排水等の有機性汚水を活性汚泥で処理し、発生した汚泥を水処理系から除去して、汚水と汚泥とを処理していた。
特開２００３−７１４９５号公報（要約） A conventional phosphorus recovery method is disclosed in, for example, Japanese Patent Laid-Open No. 2003-71495 (Patent Document 1). According to the publication, organic sewage such as domestic wastewater containing phosphorus is treated with activated sludge, and the generated sludge is removed from the water treatment system to treat sewage and sludge.
JP 2003-71495 A (summary)

従来のリンの回収は上記のように行われていた。活性汚泥法によって処理が行われるため、汚泥の濃縮や、発生汚泥の貯留等が必要で、これらの汚泥の処理コストが高くつくという問題があった。   Conventional phosphorus recovery has been performed as described above. Since the treatment is performed by the activated sludge method, it is necessary to concentrate the sludge, store the generated sludge, and the like, and there is a problem that the treatment cost of these sludges is high.

この発明は上記のような問題点に鑑みてなされたもので、処理コストを下げて、容易にリンの回収が可能なリン回収方法を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a phosphorus recovery method capable of easily recovering phosphorus at a reduced processing cost.

この発明に係るリンの回収方法は、汚水処理装置の内部に微生物保持材を保持し、汚水処理装置に汚水を流入させて、微生物保持材で汚水を処理することによって、処理後の汚泥を付着させ、汚泥の付着した微生物保持材を回収し、回収された微生物保持材からリンを回収する。   In the method for recovering phosphorus according to the present invention, the microorganism holding material is held inside the sewage treatment apparatus, the sewage is allowed to flow into the sewage treatment apparatus, and the sewage is treated with the microorganism holding material, thereby attaching the treated sludge. The microorganism holding material with sludge attached is collected, and phosphorus is collected from the collected microorganism holding material.

汚水処理装置の内部に設けた微生物保持材に汚水を流入させて、微生物保持材で汚水を処理して、処理後の汚泥を付着させ、汚泥の付着した微生物保持材を回収し、回収された微生物保持材からリンを回収するため、微生物保持材に付着したリンを回収できる。   The sewage was allowed to flow into the microorganism holding material provided inside the sewage treatment device, the sewage was treated with the microorganism holding material, the treated sludge was adhered, and the microorganism holding material with the sludge was collected and recovered. Since phosphorus is recovered from the microorganism holding material, phosphorus attached to the microorganism holding material can be recovered.

その結果、処理コストを下げて、容易にリンの回収が可能なリン回収方法を提供できる。   As a result, it is possible to provide a phosphorus recovery method capable of reducing phosphorus and easily recovering phosphorus.

汚水処理装置は、循環式トイレであってもよいし、合併浄化槽であってもよいし、下水処理場内に設けられたエアレーションタンクであってもよい。   The sewage treatment apparatus may be a circulating toilet, a merged septic tank, or an aeration tank provided in a sewage treatment plant.

好ましくは、循環式トイレは汚水が循環する貯水槽を有し、貯水槽からリンを回収してもよいし、循環式トイレは活性炭を有する脱色槽を有し、活性炭からリンを回収してもよい。   Preferably, the circulation toilet has a water storage tank through which sewage circulates, and phosphorus may be collected from the water storage tank. The circulation toilet has a decolorization tank having activated carbon, and phosphorus may be collected from the activated carbon. Good.

以下、この発明の一実施の形態を、図面を参照して説明する。図１はこの発明の一実施の形態に係るリン回収方法が実行される汚水処理装置の一例としての、合併浄化槽を示す図である。（Ａ）は平面図であり、（Ｂ）は、（Ａ）において、矢印Ｂ-Ｂで示す部分の断面図である。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a combined septic tank as an example of a sewage treatment apparatus in which a phosphorus recovery method according to an embodiment of the present invention is executed. (A) is a top view, (B) is sectional drawing of the part shown by arrow BB in (A).

図１を参照して、この実施の形態に係るリン回収方法が実行される合併浄化槽は１０は、ほぼ直方体の形状を有し、その中が３つの槽に分かれている。それらの槽は、相互に壁１４，１８で分離された第１、第２および第３槽１１，１５，１９を含む。第１〜第３槽１１，１５，１９のそれぞれは、その幅方向寸法は同じであり、その長手方向の寸法は、５：４：１から６：３：１程度に分割されているのが好ましい。   Referring to FIG. 1, a combined septic tank 10 in which the phosphorus recovery method according to this embodiment is executed has a substantially rectangular parallelepiped shape, and is divided into three tanks. These tanks include first, second and third tanks 11, 15, 19 separated from each other by walls 14, 18. Each of the first to third tanks 11, 15, 19 has the same widthwise dimension, and the longitudinal dimension is divided from about 5: 4: 1 to 6: 3: 1. preferable.

第１槽は、図１（Ａ）に示すようにマトリックス状に配置された複数の微生物保持材１２と、その中央部に設けられた発泡器１３とを含み、入口１１ａから流入された汚水を処理して、孔１４ａを介して、処理された汚水を第２槽へ送る。汚水中の大小粒子からなる汚物は、微生物保持材１２に付着し、微生物が付着した汚物等を処理する（分解する）。発泡器（曝気装置）１３は微細な泡を噴出し、この勢いで水流が発生するとともに微生物に酸素が供給され、これによって、微生物の分解作用が加速される。   The first tank includes a plurality of microorganism holding materials 12 arranged in a matrix as shown in FIG. 1 (A) and a foamer 13 provided at the center thereof, and the sewage flowing from the inlet 11a is removed. It processes and sends the processed waste water to a 2nd tank through the hole 14a. The filth consisting of large and small particles in the sewage adheres to the microorganism holding material 12 and treats (decomposes) the filth attached to the microorganism. The foaming device (aeration device) 13 ejects fine bubbles, a water flow is generated with this momentum, and oxygen is supplied to the microorganisms, thereby accelerating the decomposition action of the microorganisms.

第２槽１５も、第１槽１１と同様にマトリックス状に配置された複数の微生物保持材１２と、その中央部に設けられた発泡器１７とを含み、第１槽から送られた処理水に対してさらに処理を行い、孔１８ａを介して処理水を第３槽に送る。ここでは、第１槽で完全に浄化されなかった「微細スカム」が浄化される。また、第２槽１５に設けられた発泡器１７の曝気量（発泡容量）は、第１槽１１に設けられた発泡器１３の曝気量より小さい。すなわち、第１槽では、曝気量を多くして、処理量を上げ、第２槽では、曝気を緩やかにして、微細なスカムを微生物保持材の緯糸に付着させ、確実に微生物で処理している。   The second tank 15 also includes a plurality of microorganism holding materials 12 arranged in a matrix like the first tank 11, and a foamer 17 provided at the center thereof, and the treated water sent from the first tank. Is further processed, and the treated water is sent to the third tank through the hole 18a. Here, “fine scum” that has not been completely purified in the first tank is purified. The aeration amount (foaming capacity) of the foaming device 17 provided in the second tank 15 is smaller than the aeration amount of the foaming device 13 provided in the first tank 11. That is, in the first tank, the amount of aeration is increased to increase the processing amount, and in the second tank, the aeration is moderated to allow fine scum to adhere to the wefts of the microorganism-holding material and reliably treat with microorganisms. Yes.

第３槽１９は、消毒液を保持する消毒槽２０を有し、第２槽で浄化された処理水を殺菌する。殺菌後の処理水は、出口１９ａを介して外部へ放流される。   The 3rd tank 19 has the disinfection tank 20 holding disinfection liquid, and sterilizes the treated water purified by the 2nd tank. The treated water after sterilization is discharged to the outside through the outlet 19a.

第１槽および第２槽に設けられた微生物保持材１２は、特開２００１−１９１０９０号公報などで公知の排水処理用の接触材で、その表面に保持された微生物の働きによって汚泥処理するとともに、リン回収装置として機能する。微生物保持材１２は、芯材となる経糸と、その経糸から螺旋放射状にかつ揺動可能に突出された多数の緯糸とによって構成されている。この緯糸が辺材となって処理範囲を広げている。また、緯糸の先端は固定されていないので、処理水の流れ等によって先端部に揺らぎが与えられる。すなわち、接触材が水中で揺動することにより、付着汚泥が先端部から徐々に剥離し、そのため接触材は安定した付着汚泥量を維持できる。   The microorganism holding material 12 provided in the first tank and the second tank is a contact material for wastewater treatment known in Japanese Patent Application Laid-Open No. 2001-191090 and the like, and is subjected to sludge treatment by the action of microorganisms held on the surface thereof. Functions as a phosphorus recovery device. The microorganism holding material 12 includes a warp serving as a core material and a large number of wefts protruding from the warp spirally and swingably. This weft is used as a sap to expand the processing range. Further, since the tip of the weft is not fixed, the tip is fluctuated by the flow of treated water or the like. That is, when the contact material oscillates in water, the attached sludge is gradually peeled off from the tip, so that the contact material can maintain a stable amount of attached sludge.

図２は、図１に示した第１および第２槽の発泡器１３周りの詳細を示す図である。図２に示すように、発泡器１３の上部には、円筒状のガイドパイプ１３ａが設けられ、これによって、発泡された空気が水面近くへ送られ、汚物が有効に攪拌され、その周囲に設けられた微生物保持材１２ａ，１２ｂ，１２ｃ等に付着する。   FIG. 2 is a diagram showing details around the foamer 13 of the first and second tanks shown in FIG. As shown in FIG. 2, a cylindrical guide pipe 13a is provided at the upper part of the foamer 13, whereby the foamed air is sent to the vicinity of the water surface, and the filth is effectively agitated and provided around it. It adheres to the microorganism holding materials 12a, 12b, 12c and the like.

次に各槽における浄化度合いについて説明する。浄化度合いは通常ＢＯＤ（Biological Oxygen Demand)等で測定されるが、その値は、第１槽で８５％〜９０％が除去され、第２槽で９５％以上除去され、１０mg／Ｌ（リットル）以下となる。なお、汚泥も微生物によって分解され、ＳＳ値で１０ｍｇ／Ｌ以下となる。   Next, the degree of purification in each tank will be described. The degree of purification is usually measured with BOD (Biological Oxygen Demand), etc., but the value is 85% to 90% removed in the first tank, 95% or more removed in the second tank, and 10 mg / L (liter). It becomes as follows. In addition, sludge is also decomposed | disassembled by microorganisms and it becomes 10 mg / L or less in SS value.

このように構成された合併浄化槽１０においては、汚泥が各槽内で微生物によって処理され（食され）てしまうため、従来のように、定期的に汚泥を取り出して処理する必要がない。たとえ、汚泥が残留したとしても、年１回程度の排出処理で十分である。また、定期的な汚泥の循環も不要である。さらに、富栄養化の原因となる「リン」も微生物保持材１２に付着するため、微生物保持材１２を回収してそこから高濃度のリンが付着した汚泥を回収することにより、リンを容易に回収できる。   In the combined septic tank 10 configured as described above, since sludge is processed (eaten) by microorganisms in each tank, it is not necessary to periodically take out and treat the sludge as in the prior art. Even if sludge remains, a discharge process of about once a year is sufficient. Also, regular sludge circulation is not required. Furthermore, since “phosphorus” that causes eutrophication also adheres to the microorganism holding material 12, it is easy to recover phosphorus by collecting the microorganism holding material 12 and collecting sludge with high-concentration phosphorus attached thereto. Can be recovered.

次に、この発明の他の実施の形態について説明する。図３はこの発明に係るリンの回収方法が適用される汚水処理装置を、下水処理装置に適応した場合の下水処理装置の全体構成を示す模式図である。図３を参照して、下水処理装置３０は、下水が流入される最初沈殿池３１と、最初沈殿池からの上澄み液を受けるエアレーションタンク３２と、エアレーションタンク３２によって処理された処理水を受ける最終沈殿池３７と、最終沈殿池３７で処理された処理水の上澄み液を処理する砂濾過器３８とを含み、砂濾過器３８で処理された処理水が管３９を介して放流される。   Next, another embodiment of the present invention will be described. FIG. 3 is a schematic diagram showing the overall configuration of the sewage treatment apparatus when the sewage treatment apparatus to which the phosphorus recovery method according to the present invention is applied is applied to the sewage treatment apparatus. Referring to FIG. 3, the sewage treatment apparatus 30 includes a first sedimentation basin 31 into which sewage is introduced, an aeration tank 32 that receives a supernatant from the first sedimentation basin, and a final treatment water that is treated by the aeration tank 32. It includes a sedimentation basin 37 and a sand filter 38 that treats the supernatant of the treated water treated in the final sedimentation basin 37, and the treated water treated by the sand filter 38 is discharged through a pipe 39.

エアレーションタンク３２には、リン回収装置として機能する微生物保持材３３と、曝気を行うためのブロワ３４と、エアレーションタンク３２内の溶存酸素量（ＢＯＤ等）を測定するための溶存酸素計３６が設けられている。ブロワ３４からの空気は、散気管３５を介してエアレーションタンク３２内に供給される。また、これらのブロワ３４および溶存酸素計３６は制御装置３８で制御される。なお、曝気は、ブロワに接続された散気管に限らず、エアレーションタンク内に複数のブロワを設け、ブロワから直接行ってもよい。   The aeration tank 32 is provided with a microorganism holding material 33 that functions as a phosphorus recovery device, a blower 34 for performing aeration, and a dissolved oxygen meter 36 for measuring the amount of dissolved oxygen (such as BOD) in the aeration tank 32. It has been. Air from the blower 34 is supplied into the aeration tank 32 via the air diffusion pipe 35. The blower 34 and the dissolved oxygen meter 36 are controlled by a control device 38. The aeration is not limited to the air diffuser connected to the blower, and a plurality of blowers may be provided in the aeration tank and directly performed from the blower.

また、最終沈殿池３７の下部からは、一部の汚泥がエアレーションタンク３２に汚泥返送路４２を介して戻されてもよい。また、余剰汚泥は最終沈殿池３７の下部から経路４１を経て取り出されてもよい。砂濾過器３８からエアレーションタンク３２に洗浄水が逆洗水返流管４０を介して戻されてもよい。   Further, a part of sludge may be returned to the aeration tank 32 via the sludge return path 42 from the lower part of the final sedimentation basin 37. Further, excess sludge may be taken out from the lower part of the final sedimentation tank 37 via the path 41. Wash water may be returned from the sand filter 38 to the aeration tank 32 via the backwash water return pipe 40.

次に、エアレーションタンク３２の詳細について説明する。図４はエアレーションタンク３２の詳細を示す図である。図４（Ｂ）はエアレーションタンク３２の長手方向の断面図であり、図４（Ａ）は、ブロワ４３が設けられた位置における、図４（Ｂ）に直交する方向の断面図である。図４（Ａ）および（Ｂ）を参照して、エアレーションタンク３２は、上記したように、複数の微生物保持材３３と、ブロワ４３とが設けられている。ここでも、ブロワ４３の上部には、図２と同様に、円筒状のガイドパイプ４３ａが設けられる。   Next, details of the aeration tank 32 will be described. FIG. 4 is a diagram showing details of the aeration tank 32. 4B is a cross-sectional view in the longitudinal direction of the aeration tank 32, and FIG. 4A is a cross-sectional view in a direction perpendicular to FIG. 4B at a position where the blower 43 is provided. 4 (A) and 4 (B), the aeration tank 32 is provided with a plurality of microorganism holding materials 33 and blowers 43 as described above. Here, a cylindrical guide pipe 43a is provided on the upper portion of the blower 43, as in FIG.

以上のように、この実施の形態においては、エアレーションタンク３２に曝気が行われると共に、微生物保持材３３に保持された微生物によって下水中の汚物等が分解されるため、汚泥の発生量が削減されるとともに、付着した汚泥に含まれるリンの濃度を高めることができる。したがって、微生物保持材１２を回収してそこから高濃度のリンが付着した汚泥および微生物保持材１２そのものに付着したリンを容易に回収できる。   As described above, in this embodiment, aeration is performed on the aeration tank 32 and sewage and the like in the sewage are decomposed by the microorganisms held in the microorganism holding material 33, so that the amount of sludge generated is reduced. In addition, the concentration of phosphorus contained in the attached sludge can be increased. Therefore, the microorganism holding material 12 can be recovered, and the sludge to which high-concentration phosphorus has adhered and the phosphorus attached to the microorganism holding material 12 itself can be easily recovered.

次に、具体的なリンの回収率の一例について説明する。上記実施の形態で述べた下水処理場において、２４時間連続運転をした結果、当初４０．４ｍｇ／ｌであったものが、２８．０ｍｇ/ｌになった。すなわち、微生物保持材によって、約１２ｍｇ／ｌのリンを回収することができた。このときの処理容量は２トンであったため、１２ｍｇ×１０００＝１２ｇ、すなわち、１日に１２ｇのリンが回収可能である。   Next, an example of a specific phosphorus recovery rate will be described. As a result of continuous operation for 24 hours in the sewage treatment plant described in the above embodiment, what was initially 40.4 mg / l is now 28.0 mg / l. That is, about 12 mg / l of phosphorus could be recovered by the microorganism holding material. Since the processing capacity at this time was 2 tons, 12 mg × 1000 = 12 g, that is, 12 g of phosphorus can be collected per day.

次に、この実施の形態の変形例について説明する。図５は、この実施の形態の変形例を示す図である。図５を参照して、この実施の形態においては、従来の下水処理装置５０に微生物処理装置４５が接続されて、リンの回収が行われる。   Next, a modification of this embodiment will be described. FIG. 5 is a diagram showing a modification of this embodiment. Referring to FIG. 5, in this embodiment, a microorganism treatment device 45 is connected to a conventional sewage treatment device 50, and phosphorus is collected.

図５の上段部分は基本的に図３に示した下水処理装置３０とエアレーションタンク４４のみが異なっている。すなわち、図５の下水処理装置においては、エアレーションタンク４４は、従来のものと同様の構成を有し、散気管３５のみが設けられ、微生物保持材は設けられていない。それ以外の構成については、図２と同様であるので、その説明を省略する。   5 basically differs only in the sewage treatment apparatus 30 and the aeration tank 44 shown in FIG. That is, in the sewage treatment apparatus of FIG. 5, the aeration tank 44 has the same configuration as that of the conventional one, only the air diffusion pipe 35 is provided, and no microorganism holding material is provided. Since other configurations are the same as those in FIG. 2, the description thereof is omitted.

この実施の形態においては、従来のエアレーションタンク４４に微生物処理装置４５が接続され、この微生物処理装置４５でエアレーションタンク４４内の汚水が処理される。ここで、微生物処理装置４５は、図４に示したものと同じ構成を有している。すなわち、微生物処理装置４５は、３次元のタンク状であって、ブロワ（曝気装置）４３と、複数の微生物保持材３３とを有している。   In this embodiment, a microorganism treatment apparatus 45 is connected to a conventional aeration tank 44, and sewage in the aeration tank 44 is treated by the microorganism treatment apparatus 45. Here, the microorganism treatment apparatus 45 has the same configuration as that shown in FIG. That is, the microorganism treatment apparatus 45 is a three-dimensional tank shape, and includes a blower (aeration apparatus) 43 and a plurality of microorganism holding materials 33.

微生物保持材３３に保持された微生物によって汚水中の汚物等が処理されるため、従来のエアレーションタンク４４内の汚水をこの微生物処理装置４５で処理することにより、汚泥の発生量を減らすことができる。   Since the filth in the sewage is treated by the microorganisms held in the microorganism holding material 33, the amount of sludge generated can be reduced by treating the sewage in the conventional aeration tank 44 with the microbial treatment device 45. .

この実施の形態は、既設の下水処理場に追加できるため、既設の下水処理場を利用して、高濃度のリンが付着した汚泥を回収することにより、リンを容易に回収できる。   Since this embodiment can be added to an existing sewage treatment plant, phosphorus can be easily collected by collecting sludge to which high-concentration phosphorus is adhered using the existing sewage treatment plant.

次に、この発明のさらに他の実施の形態について説明する。この実施の形態においては、リンを回収するために、循環式のトイレを用いる。図６は、リン回収を行う循環式トイレの構成を示す模式図である。図６を参照して、循環式トイレ６０は、トイレ建物６１内に設けられた便器６１ａからのし尿を受け、し尿からトイレットペーパ以外の異物を除去する異物除去槽６２と、し尿に対して空気を送り、脱臭と浄化を行う曝気槽６３と、蒸発反応槽６４と、ポンプ槽６５と、脱色層６６と、貯水槽６７と、予備貯水槽６８とを含み、し尿は、これらの槽をこの順に通過して処理される。   Next, still another embodiment of the present invention will be described. In this embodiment, a circulating toilet is used to collect phosphorus. FIG. 6 is a schematic diagram showing the configuration of a circulating toilet that collects phosphorus. Referring to FIG. 6, circulation toilet 60 receives foreign matter from toilet 61 a provided in toilet building 61, removes foreign matter other than toilet paper from human waste, and air against human waste. The aeration tank 63 for performing deodorization and purification, an evaporation reaction tank 64, a pump tank 65, a decolorization layer 66, a water storage tank 67, and a preliminary water storage tank 68, and human waste is used for this tank. Pass through in order.

曝気槽６３は図１に示した合併浄化槽の第１および第２層と同様の構成を有し、図示のない微生物保持材と、エアブロワ６３ａとを有し、し尿に対して曝気を行う。蒸発反応槽６４には図示のない微生物保持材にバイオパウダを付着させており、それらに付着した微生物がし尿を浄化する。ポンプ槽６５には、脱色槽６６へし尿を送るポンプ６５ａが設けられる。脱色層６６には杉のおがくずの活性炭が含まれており、活性炭で杉の色を除去する。貯水槽６７にはポンプ６７ａと６７ｂとが設けられる。ポンプ６７ａは便器６１ａに、水洗のための水をリサイクル（循環）する。ポンプ６７ｂは、予備貯水槽６８に水を送る。この予備貯水槽６８は、トイレの使用人数が極端に多い日に、浄化済の水を一時的に貯水するために使用される。ここでは、し尿を処理する各槽が地下に設けられている。   The aeration tank 63 has the same configuration as the first and second layers of the combined septic tank shown in FIG. 1, has a microorganism holding material (not shown), and an air blower 63a, and aerates human waste. In the evaporation reaction tank 64, biopowder is attached to a microorganism holding material (not shown), and microorganisms attached thereto purify human waste. The pump tank 65 is provided with a pump 65 a for sending urine to the decolorization tank 66. The decolorization layer 66 contains activated carbon of cedar sawdust, and the color of the cedar is removed with activated carbon. The water storage tank 67 is provided with pumps 67a and 67b. The pump 67a recycles (circulates) water for washing in the toilet bowl 61a. The pump 67 b sends water to the reserve water tank 68. The spare water tank 68 is used to temporarily store purified water on a day when the number of toilet users is extremely large. Here, each tank for treating human waste is provided in the basement.

この実施の形態においては、循環式トイレ６０を用いて汚水の循環を繰り返し、リンを濃縮する。そして、貯水槽６７に保持される汚水中のリン濃度を高める。このように濃度の高まった状態で貯水槽６７からリンを回収すれば、効率よくリンを回収可能になる。また、脱色槽６６内の活性炭からリンを回収するようにしてもよい。   In this embodiment, the circulation of sewage is repeated using the circulating toilet 60 to concentrate phosphorus. And the phosphorus density | concentration in the waste water hold | maintained at the water storage tank 67 is raised. Thus, if phosphorus is collect | recovered from the water storage tank 67 in the state where the density | concentration increased, it will become possible to collect | recover phosphorus efficiently. Further, phosphorus may be recovered from the activated carbon in the decolorization tank 66.

以上、図面を参照してこの発明の実施形態を説明したが、この発明は、図示した実施形態のものに限定されない。図示された実施形態に対して、この発明と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

この発明に係るリン回収方法は、簡単な構成で高濃度のリンを回収できるため、リンの回収方法として、有利に使用される。   The phosphorus recovery method according to the present invention can be advantageously used as a phosphorus recovery method because it can recover a high concentration of phosphorus with a simple configuration.

この発明の一実施の形態に係るリンの回収方法が実行される、合併浄化槽の構成を示す図である。It is a figure which shows the structure of the merged septic tank in which the collection | recovery method of phosphorus which concerns on one embodiment of this invention is performed. 発泡器周りの詳細を示す斜視図である。It is a perspective view which shows the detail around a foamer. この発明の他の実施の形態に係るリンの回収方法が実行される下水処理装置の構成を示す図である。It is a figure which shows the structure of the sewage treatment apparatus with which the collection | recovery method of phosphorus which concerns on other embodiment of this invention is performed. エアレーションタンクの構成を示す図である。It is a figure which shows the structure of an aeration tank. この発明のさらに他の実施の形態に係るリンの回収方法が実行される下水処理装置を示す図である。It is a figure which shows the sewage treatment apparatus with which the collection | recovery method of phosphorus which concerns on other embodiment of this invention is performed. この発明のさらに他の実施の形態に係るリンの回収方法が実行される循環式トイレを示す図である。It is a figure which shows the circulation type toilet by which the collection | recovery method of phosphorus which concerns on other embodiment of this invention is performed.

符号の説明Explanation of symbols

１０ 合併浄化槽、１１ 第１槽、１２，３３ 微生物保持材、１３，１７ 発泡器、１４，１８ 壁、１５ 第２槽、１７ １９ 第３槽、３２ エアレーションタンク、３５ 散気管、４３ ブロワ、４５ 微生物処理装置、６０ 循環式トイレ。 10 Combined septic tank, 11 1st tank, 12, 33 Microorganism holding material, 13, 17 Foamer, 14, 18 Wall, 15 2nd tank, 17 19 3rd tank, 32 Aeration tank, 35 Aeration pipe, 43 Blower, 45 Microbial treatment equipment, 60 circulation toilet.

Claims (6)

汚水処理装置の内部に微生物保持材を保持し、
前記汚水処理装置に汚水を流入させて、前記微生物保持材で汚水を処理することによって、処理後の汚泥を付着させ、
前記汚泥の付着した微生物保持材を回収し、
回収された微生物保持材からリンを回収する、リンの回収方法。 Hold the microorganism holding material inside the sewage treatment equipment,
By allowing sewage to flow into the sewage treatment apparatus and treating the sewage with the microorganism holding material, the treated sludge is attached,
Collect the microorganism holding material to which the sludge is attached,
A method for recovering phosphorus, wherein phosphorus is recovered from the recovered microorganism-retaining material. 前記汚水処理装置は、循環式トイレである、請求項１に記載のリンの回収方法。 The phosphorus recovery method according to claim 1, wherein the sewage treatment apparatus is a circulating toilet. 前記汚水処理装置は、合併浄化槽である、請求項１に記載のリンの回収方法。 The method for recovering phosphorus according to claim 1, wherein the sewage treatment apparatus is a combined septic tank. 前記汚水処理装置は、下水処理場内に設けられたエアレーションタンクである、請求項１に記載のリンの回収方法。 The method for recovering phosphorus according to claim 1, wherein the sewage treatment apparatus is an aeration tank provided in a sewage treatment plant. 前記循環式トイレは汚水が循環する貯水槽を有し、
前記貯水槽からリンを回収する、請求項２に記載のリンの回収方法。 The circulating toilet has a water tank in which sewage circulates,
The method for recovering phosphorus according to claim 2, wherein phosphorus is recovered from the water tank. 前記循環式トイレは活性炭を有する脱色槽を有し、
前記活性炭からリンを回収する、請求項２または５に記載のリンの回収方法。

The circulation toilet has a decoloring tank with activated carbon,
The method for recovering phosphorus according to claim 2, wherein phosphorus is recovered from the activated carbon.

JP2006154815A 2006-06-02 2006-06-02 How to recover phosphorus Expired - Fee Related JP5519898B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006154815A JP5519898B2 (en) 2006-06-02 2006-06-02 How to recover phosphorus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006154815A JP5519898B2 (en) 2006-06-02 2006-06-02 How to recover phosphorus

Publications (2)

Publication Number Publication Date
JP2007319819A true JP2007319819A (en) 2007-12-13
JP5519898B2 JP5519898B2 (en) 2014-06-11

Family

ID=38853050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006154815A Expired - Fee Related JP5519898B2 (en) 2006-06-02 2006-06-02 How to recover phosphorus

Country Status (1)

Country Link
JP (1) JP5519898B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008183519A (en) * 2007-01-30 2008-08-14 Kansai Pgs Kk Sewage treatment apparatus and phosphorus recovering method
JP2013081891A (en) * 2011-10-07 2013-05-09 Mitsubishi Heavy Industries Mechatronics Systems Ltd Wastewater treatment apparatus and wastewater treatment method

Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51109153A (en) * 1975-03-22 1976-09-27 Asahi Chemical Ind Haisuino kojimizushorisochi
JPS5385951A (en) * 1977-01-06 1978-07-28 Kiyoe Miki Device for treating waste water
JPS54133754A (en) * 1978-04-07 1979-10-17 Seisan Gijiyutsu Kaihatsu Kenk High grade secondary disposal method by microbe suspension contact material in sanitary sewage disposal and high grade secondary disposal plant that use said method
JPS55174996U (en) * 1979-06-02 1980-12-15
JPH0463198A (en) * 1990-06-28 1992-02-28 Nippon Kentetsu Co Ltd Activated sludge treating equipment
JPH0645699U (en) * 1992-11-27 1994-06-21 株式会社ビー・バイ・ビー Water purification equipment such as water storage tanks and wastewater purification tanks
JPH10230254A (en) * 1997-02-19 1998-09-02 Ebara Corp Lightweight dephosphorizing agent and removing method of phosphorus in organic waste water using the same
JP2001198588A (en) * 2000-01-19 2001-07-24 Furukawa Co Ltd Water treating equipment
JP2002160988A (en) * 2000-11-24 2002-06-04 Rinfuoosu Kogyo Kk Apparatus and method for supplying liquid fertilizer
JP2002320986A (en) * 2001-04-26 2002-11-05 Inax Corp Processing method for biological system waste liquid
JP2003053379A (en) * 2001-06-05 2003-02-25 Nkk Corp Method of cleaning water and recovering underwater component
JP2004050177A (en) * 2002-07-17 2004-02-19 Kansai Pgs Kk Sewage cleaning and regeneration apparatus, and circulating type flash toilet unit
JP2004097926A (en) * 2002-09-09 2004-04-02 Saburo Matsui Water treatment method and water treatment equipment
JP2004154668A (en) * 2002-11-06 2004-06-03 Yonden Gijutsu Consultant:Kk Resource recovery type sewage purification method and apparatus using the same
JP2004230299A (en) * 2003-01-30 2004-08-19 Eiwa Kokudo Kankyo Kk Waste water cleaning device
JP2005013970A (en) * 2003-06-30 2005-01-20 Toshiba Corp Eutrophication prevention system of water, and eutrophication prevention method of water
JP2005095758A (en) * 2003-09-24 2005-04-14 National Agriculture & Bio-Oriented Research Organization Method and apparatus for treating water containing inorganic-state nitrogen or phosphorus
JP2005152835A (en) * 2003-11-27 2005-06-16 Office Neo:Kk Method and apparatus for treating sewage and cleaning bag
JP2005161219A (en) * 2003-12-03 2005-06-23 Chiyuraru Tec Kk Device for removing phosphorus in wastewater
JP2005230689A (en) * 2004-02-19 2005-09-02 Takenaka Komuten Co Ltd Water path and member for removing nitrogen/phosphorus contained in waste water, and removal method for nitrogen/phosphorus contained in waste water
JP2005324112A (en) * 2004-05-13 2005-11-24 Kansai Pgs Kk Apparatus for purifying and regenerating sewage, and evaporating reactor
JP2006136752A (en) * 2004-11-10 2006-06-01 National Agriculture & Bio-Oriented Research Organization Method for treating water containing suspended solid, inorganic-state nitrogen and phosphorus
JP2006346542A (en) * 2005-06-14 2006-12-28 Asahi Kasei Chemicals Corp Waste water treatment device and method
JP2007229599A (en) * 2006-02-28 2007-09-13 Kansai Pgs Kk Sewage treating apparatus

Patent Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51109153A (en) * 1975-03-22 1976-09-27 Asahi Chemical Ind Haisuino kojimizushorisochi
JPS5385951A (en) * 1977-01-06 1978-07-28 Kiyoe Miki Device for treating waste water
JPS54133754A (en) * 1978-04-07 1979-10-17 Seisan Gijiyutsu Kaihatsu Kenk High grade secondary disposal method by microbe suspension contact material in sanitary sewage disposal and high grade secondary disposal plant that use said method
JPS55174996U (en) * 1979-06-02 1980-12-15
JPH0463198A (en) * 1990-06-28 1992-02-28 Nippon Kentetsu Co Ltd Activated sludge treating equipment
JPH0645699U (en) * 1992-11-27 1994-06-21 株式会社ビー・バイ・ビー Water purification equipment such as water storage tanks and wastewater purification tanks
JPH10230254A (en) * 1997-02-19 1998-09-02 Ebara Corp Lightweight dephosphorizing agent and removing method of phosphorus in organic waste water using the same
JP2001198588A (en) * 2000-01-19 2001-07-24 Furukawa Co Ltd Water treating equipment
JP2002160988A (en) * 2000-11-24 2002-06-04 Rinfuoosu Kogyo Kk Apparatus and method for supplying liquid fertilizer
JP2002320986A (en) * 2001-04-26 2002-11-05 Inax Corp Processing method for biological system waste liquid
JP2003053379A (en) * 2001-06-05 2003-02-25 Nkk Corp Method of cleaning water and recovering underwater component
JP2004050177A (en) * 2002-07-17 2004-02-19 Kansai Pgs Kk Sewage cleaning and regeneration apparatus, and circulating type flash toilet unit
JP2004097926A (en) * 2002-09-09 2004-04-02 Saburo Matsui Water treatment method and water treatment equipment
JP2004154668A (en) * 2002-11-06 2004-06-03 Yonden Gijutsu Consultant:Kk Resource recovery type sewage purification method and apparatus using the same
JP2004230299A (en) * 2003-01-30 2004-08-19 Eiwa Kokudo Kankyo Kk Waste water cleaning device
JP2005013970A (en) * 2003-06-30 2005-01-20 Toshiba Corp Eutrophication prevention system of water, and eutrophication prevention method of water
JP2005095758A (en) * 2003-09-24 2005-04-14 National Agriculture & Bio-Oriented Research Organization Method and apparatus for treating water containing inorganic-state nitrogen or phosphorus
JP2005152835A (en) * 2003-11-27 2005-06-16 Office Neo:Kk Method and apparatus for treating sewage and cleaning bag
JP2005161219A (en) * 2003-12-03 2005-06-23 Chiyuraru Tec Kk Device for removing phosphorus in wastewater
JP2005230689A (en) * 2004-02-19 2005-09-02 Takenaka Komuten Co Ltd Water path and member for removing nitrogen/phosphorus contained in waste water, and removal method for nitrogen/phosphorus contained in waste water
JP2005324112A (en) * 2004-05-13 2005-11-24 Kansai Pgs Kk Apparatus for purifying and regenerating sewage, and evaporating reactor
JP2006136752A (en) * 2004-11-10 2006-06-01 National Agriculture & Bio-Oriented Research Organization Method for treating water containing suspended solid, inorganic-state nitrogen and phosphorus
JP2006346542A (en) * 2005-06-14 2006-12-28 Asahi Kasei Chemicals Corp Waste water treatment device and method
JP2007229599A (en) * 2006-02-28 2007-09-13 Kansai Pgs Kk Sewage treating apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008183519A (en) * 2007-01-30 2008-08-14 Kansai Pgs Kk Sewage treatment apparatus and phosphorus recovering method
JP2013081891A (en) * 2011-10-07 2013-05-09 Mitsubishi Heavy Industries Mechatronics Systems Ltd Wastewater treatment apparatus and wastewater treatment method

Also Published As

Publication number Publication date
JP5519898B2 (en) 2014-06-11

Similar Documents

Publication Publication Date Title
JP3893402B2 (en) Exhaust gas wastewater treatment apparatus and exhaust gas wastewater treatment method
JP3350364B2 (en) Wastewater treatment method and wastewater treatment device
JP5366402B2 (en) Water treatment method
JP3370576B2 (en) Ultrapure water production equipment
KR100992827B1 (en) Cleaning system for waste-water purifier
JP4671888B2 (en) Sewage treatment equipment
JP2006289153A (en) Method of cleaning sewage and apparatus thereof
JP4413077B2 (en) Water treatment equipment
JP5519898B2 (en) How to recover phosphorus
JP5448285B2 (en) Membrane separation activated sludge treatment method
JP5448287B2 (en) Membrane separation activated sludge treatment equipment
JP2003053378A (en) Method and device for treating water by using separation membrane
JP3263267B2 (en) Septic tank
JP2006289152A (en) Method of treating organic waste water and apparatus thereof
JP2008031744A (en) Circulating toilet system
JP2001347287A (en) Wastewater treatment apparatus
JP2008221190A (en) Wastewater treatment apparatus
JP2000229297A (en) Biological water treating device
JP2005161218A (en) Membrane separator
JP3970612B2 (en) Purification processing apparatus and purification processing method
JP4117361B2 (en) Anaerobic treatment tank equipped with ozone aeration chamber and sewage septic tank
JPH09108672A (en) Parallel two-stage membrane separation type septic tank
JP5000594B2 (en) Merger processing septic tank
JP2001137875A (en) Combined type, treatment and purification facility and sewage treatment device used for combined type treatment and purification tank
JP2003074104A (en) Flush type simple toilet

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090226

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110310

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110329

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110520

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120207

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20130205

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130502

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130507

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20130507

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130529

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20130529

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20130620

A912 Re-examination (zenchi) completed and case transferred to appeal board

Free format text: JAPANESE INTERMEDIATE CODE: A912

Effective date: 20130823

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20140228

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140404

R150 Certificate of patent or registration of utility model

Ref document number: 5519898

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees