JP5244467B2 - Bill pit scum treatment method and fuel recovery method - Google Patents
Bill pit scum treatment method and fuel recovery method Download PDFInfo
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- JP5244467B2 JP5244467B2 JP2008149683A JP2008149683A JP5244467B2 JP 5244467 B2 JP5244467 B2 JP 5244467B2 JP 2008149683 A JP2008149683 A JP 2008149683A JP 2008149683 A JP2008149683 A JP 2008149683A JP 5244467 B2 JP5244467 B2 JP 5244467B2
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Description
本発明は、ビルピット内で発生するスカムを処理するためのビルピットスカム処理方法及び同方法を利用して燃料を回収する燃料回収方法に関するものである。
The present invention relates to a bill scum processing method for processing scum generated in a bill pit and a fuel recovery method for recovering fuel using the method .
従来より、建物内の排水を一時的に貯留し、貯留量が一定量となってからポンプにより公共下水道へと排出するビルピット（排水槽）が利用されている。 Conventionally, a building pit (drainage tank) that temporarily stores wastewater in a building and discharges it to a public sewer by a pump after the storage amount reaches a certain amount has been used.
このビルピットにおいては、建物内で発生した汚水や雑排水を貯留するために、排水中の有機物が腐敗・醗酵してガスが発生し、そのガスによって排水中の油脂質などが水面上に浮上して、塊状のスカムが発生する。 In this building pit, organic matter in the wastewater is spoiled and fermented to store sewage and miscellaneous wastewater generated in the building, and oil and lipids in the wastewater float on the water surface. Thus, massive scum is generated.
このビルピット内で発生するスカム（以下「ビルピットスカム」という。）は、悪臭の原因であるとともに、害虫の発生原因ともなり、さらには、配管内の詰まりの原因ともなることから、定期的にビルピットから除去する処理が必要であった（たとえば、特許文献１参照。）。 The scum generated in the building pit (hereinafter referred to as “bill pit scum”) is a cause of foul odors, as well as pests and clogging in the piping. The process which removes from this was required (for example, refer patent document 1).
ところが、上記した従来のビルピットスカムの処理にあっては、主に焼却・埋め立て処理が行われていたために、燃料の高騰に伴う処理費用の増大や、焼却処理後の廃棄物の海洋投棄禁止などの影響により、ビルピットスカムを適切に処理することが困難となってきている。 However, in the above-mentioned conventional billpit scum treatment, mainly incineration and landfill treatment was performed, so the treatment cost increased due to soaring fuel, and the ocean dumping of waste after incineration was prohibited. As a result, it has become difficult to properly process billpit scum.
そこで、請求項１に係る本発明では、ビルピットスカム処理方法において、ビルピット内で水面上に浮上したスカムと脂肪溶解物質を含有する溶剤とを混合し、100℃以上に加熱して水分を蒸発させた後に、固液分離し、固体状回収物と燃料として利用できる液体状回収物とを回収することにした。
Therefore, in the present invention according to claim 1, in the billpit scum treatment method , the scum floating on the water surface in the billpit and the solvent containing the fat-dissolving substance are mixed and heated to 100 ° C. or more to evaporate the water. After that, solid-liquid separation was performed, and a solid recovered material and a liquid recovered material that could be used as fuel were recovered.
また、請求項２に係る本発明では、前記請求項１に係る本発明において、前記液体状回収物を前記溶剤として循環利用することにした。 Further, in the present invention according to claim 2, in the present invention according to claim 1, the liquid recovery product is circulated and used as the solvent.
また、請求項３に係る本発明では、燃料回収方法において、ビルピット内で水面上に浮上したスカムと脂肪溶解物質を含有する溶剤とを混合し、100℃以上に加熱して水分を蒸発させた後に、固液分離し、燃料として利用できる液体状回収物を回収することにした。 Further, in the present invention according to claim 3, in the fuel recovery method, the scum floating on the water surface in the bill pit and the solvent containing the fat-dissolving substance are mixed and heated to 100 ° C. or more to evaporate the water . Later, solid-liquid separation was performed, and a liquid recovered material that could be used as fuel was recovered.
また、請求項４に係る本発明では、前記請求項３に係る本発明において、前記液体状回収物を前記溶剤として循環利用することにした。 In the present invention according to claim 4, in the present invention according to claim 3, the liquid recovery product is circulated and used as the solvent.
そして、本発明では、以下に記載する効果を奏する。 And in this invention, there exists an effect described below.
すなわち、本発明では、ビルピット内で発生するスカムと脂肪溶解物質を含有する溶剤とを混合し、加熱した後に、固液分離し、液体状回収物と固体状回収物とを回収することにしているために、ビルピットスカムから液体状回収物と固体状回収物とに分けて回収することによってビルピットスカムを適切に処理することができる。 That is, in the present invention, the scum generated in the building pit and the solvent containing the fat-dissolving substance are mixed, heated, and then solid-liquid separated to recover the liquid recovery product and the solid recovery product. Therefore, the billpit scum can be appropriately processed by collecting the billpit scum separately from the liquid collected material and the solid collected material.
特に、本発明では、脂肪溶解物質によって脂肪を溶解することでビルピットスカムに含有される油分を溶剤に溶け込ませることができるので、ビルピットスカムに含有される油分を燃料として利用できる液体状回収物として回収することができ、資源の有効利用を図ることができる。 In particular, in the present invention, the oil contained in the billpit scum can be dissolved in the solvent by dissolving the fat with the fat-dissolving substance, so that the oil contained in the billpit scum can be used as a fuel that can be used as a fuel. It can be collected and resources can be used effectively.
以下に、本発明に係るビルピットスカム処理システム及び燃料回収方法の具体的な処理構成について図面を参照しながら説明する。 Hereinafter, specific processing configurations of the billpit scum processing system and the fuel recovery method according to the present invention will be described with reference to the drawings.
本発明は、図1に模式的に示すように、ビルピット内で発生するスカム（ビルピットスカム）と脂肪溶解物質を含有する溶剤とを混合し、加熱した後に、固液分離し、液体状回収物と固体状回収物とを回収するものである。 In the present invention, as schematically shown in FIG. 1, a scum generated in a billpit (bilpit scum) and a solvent containing a fat-dissolving substance are mixed and heated, and then solid-liquid separation is performed to obtain a liquid recovered product. And a solid recovered product.
具体的には、まず、ビルピットから除去したスカムを容器内に投入するとともに、同じ容器内に脂肪溶解物質を含有する溶剤を投入し、撹拌混合する。 Specifically, first, the scum removed from the bill pit is charged into a container, and a solvent containing a fat-dissolving substance is charged into the same container, followed by stirring and mixing.
ここで、スカムだけを処理してもよく、また、容器内にスカムとともにビルピット内に沈殿するスラッジを混合してもよい。 Here, only the scum may be processed, or sludge that settles in the bill pit together with the scum may be mixed in the container.
また、脂肪溶解物質は、脂肪を溶解（分解）する物質であればよく、たとえば、ノルマルヘキサンを用いることができる。溶剤としては、灯油などの鉱物性油などの沸点が水よりも高いものが用いられる。ここでは、灯油90重量％とノルマルヘキサン10重量％の混合液を用いている。 The fat-dissolving substance may be any substance that dissolves (decomposes) fat. For example, normal hexane can be used. As the solvent, a mineral oil such as kerosene having a boiling point higher than that of water is used. Here, a mixed solution of 90% by weight of kerosene and 10% by weight of normal hexane is used.
そして、容器内に投入したビルピットスカムと溶剤との混合物を100℃以上に加熱して、水分を蒸発させる。 Then, the mixture of the billpit scum and the solvent charged in the container is heated to 100 ° C. or more to evaporate the water.
その後、自然放置や遠心分離などによって固液分離を行い、上澄みを液体状回収物として回収するとともに、沈殿物を固体状回収物として回収する。 Thereafter, solid-liquid separation is performed by natural standing, centrifugation, or the like, and the supernatant is recovered as a liquid recovered material, and the precipitate is recovered as a solid recovered material.
以上の処理により、ビルピットスカムから燃料として利用できる液体状回収物と、肥料や固体燃料として利用できる固体状回収物とを回収することができる。 By the above processing, it is possible to recover the liquid recovery material that can be used as fuel from the billpit scum and the solid recovery material that can be used as fertilizer or solid fuel.
これは、ビルピット内で発生するスカムには、厨房などから排出された植物性油分や動物性油分が脂肪により塊状に結合したエマルジョン状の油分が多量に含有されており、これらに含有される脂肪が脂肪溶解物質によって溶解されることにより、液体状の油分となって溶剤に溶け込み、その後の加熱により水分が蒸発することで、燃料として利用できる液体状回収物として回収されるのである。また、固体状回収物には、ビルピットスカムに含有されていたタンパク質を多く含んでおり、肥料として有効に利用することができる。 This is because the scum generated in the building pit contains a large amount of oil in the form of emulsion oils, which are vegetable oils and animal oils discharged from kitchens, etc. bound together by fat. Is dissolved in a fat-dissolving substance, so that it becomes a liquid oil and dissolves in the solvent, and the water is evaporated by subsequent heating, so that it is recovered as a liquid recovered material that can be used as fuel. In addition, the solid recovered material contains a large amount of protein contained in the billpit scum and can be effectively used as a fertilizer.
また、回収した液体状回収物には、脂肪溶解物質が残存しているために、回収した液体状回収物自体を脂肪溶解物質を含有する溶剤として循環利用することもできる。 Further, since the fat-dissolved substance remains in the recovered liquid recovery product, the recovered liquid recovery product itself can be recycled as a solvent containing the fat-dissolving substance.
以上に説明したように、本発明では、ビルピット内で発生するスカムと脂肪溶解物質を含有する溶剤とを混合し、加熱した後に、固液分離し、液体状回収物と固体状回収物とを回収することにしているために、ビルピットスカムから液体状回収物と固体状回収物とに分けて回収することによってビルピットスカムを適切に処理することができ、これにより、ビルピット内の悪臭発生や害虫発生や配管詰まりなどを防止することができる。 As described above, in the present invention, the scum generated in the building pit and the solvent containing the fat-dissolving substance are mixed, heated, and then solid-liquid separated to obtain a liquid recovery product and a solid recovery product. Since it is decided to collect it, it is possible to treat the billpit scum appropriately by separating it into liquid and solid collected from the billpit scum. Occurrence and clogging of piping can be prevented.
特に、本発明では、脂肪溶解物質によって脂肪を溶解することでビルピットスカムに含有される油分を溶剤に溶け込ませることができるので、ビルピットスカムに含有される油分を燃料として利用できる液体状回収物として回収することができ、資源の有効利用を図ることができる。 In particular, in the present invention, the oil contained in the billpit scum can be dissolved in the solvent by dissolving the fat with the fat-dissolving substance, so that the oil contained in the billpit scum can be used as a fuel that can be used as a fuel. It can be collected and resources can be used effectively.
また、本発明では、回収した液体状回収物を溶剤として有効に循環利用することができる。 Further, in the present invention, the recovered liquid recovery product can be effectively recycled as a solvent.
Claims (4)
The fuel recovery method according to claim 3, wherein the liquid recovery product is recycled as the solvent.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2008149683A JP5244467B2 (en) | 2008-06-06 | 2008-06-06 | Bill pit scum treatment method and fuel recovery method |
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| JP2008149683A JP5244467B2 (en) | 2008-06-06 | 2008-06-06 | Bill pit scum treatment method and fuel recovery method |
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| JP2009291746A JP2009291746A (en) | 2009-12-17 |
| JP5244467B2 true JP5244467B2 (en) | 2013-07-24 |
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| CN103420548B (en) * | 2012-05-15 | 2016-01-20 | 中国石油天然气股份有限公司 | Composite extraction solvent for oily sludge |
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| JPS5181781A (en) * | 1975-01-16 | 1976-07-17 | Kurenai Sangyo Kk | HOORUDOSURATSUJINOSAI SEISHORIHOHO |
| JPS51128146A (en) * | 1975-04-30 | 1976-11-08 | Ebara Infilco Co Ltd | Disposition method for polluted mud or polluted water |
| JPS5212757A (en) * | 1975-07-21 | 1977-01-31 | Kagaku Gijutsu Shinkoukai | Clarification of petroleum (oil) sludge |
| JPS5853036B2 (en) * | 1976-11-12 | 1983-11-26 | 新日鐵化学株式会社 | How to treat tar sludge |
| JPS54115544A (en) * | 1978-02-23 | 1979-09-08 | British Petroleum Co | Disposal method of oily sludge |
| JPS55129496A (en) * | 1979-03-30 | 1980-10-07 | Koyama Yushi Kogyo Kk | Oil recovery and separation from oil contained sludge |
| US5055196A (en) * | 1988-12-22 | 1991-10-08 | Ensr Corporation | Extraction process to remove pcbs from soil and sludge |
| DE4106281A1 (en) * | 1991-02-28 | 1992-09-03 | Ruhrkohle Oel & Gas | METHOD FOR THE TREATMENT OF WATER-CONTAINING MATERIALS LOADED WITH ORGANIC CONTAMINATORS USING EASILY FLUID AND WATER-FREE MIXABLE ORANGE SOLVENTS |
| JPH08282198A (en) * | 1995-04-10 | 1996-10-29 | Daiki:Kk | Image transferring method and manufacture of image transferred matter |
| JPH09176659A (en) * | 1995-12-25 | 1997-07-08 | Shimizu Corp | Method for purifying oil-containing sludge |
| JP2001259694A (en) * | 2000-03-15 | 2001-09-25 | Kurita Water Ind Ltd | Method for treating sludge or sediment |
| JP2002113476A (en) * | 2000-10-10 | 2002-04-16 | Sheru Shoji Kk | Method for treating sewage in building pit and air supply device used in this method |
| KR100475172B1 (en) * | 2001-02-20 | 2005-03-08 | 에스케이 주식회사 | Method for Removing Sludges in A Crude Oil Tank and Recovering Oil Therefrom |
| JP2003290604A (en) * | 2002-04-02 | 2003-10-14 | Saitagumi Co Ltd | Recovery method for oils-and-fats component from wastewater and reutilization method for the component |
| JP2004016854A (en) * | 2002-06-13 | 2004-01-22 | Morio Momose | Offensive smell removing device of sewage storage tank or the like, manufacturing method therefor and method for installing offensive smell removing device |
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